JP2008065055A - Data registration apparatus, data registration method, and data registration program - Google Patents

Abstract

The present invention enables music data to be classified almost accurately according to the characteristics of music.
In the present invention, a plurality of types of playlists PL are stored in the list storage unit 16, and first and second registration condition tables RET1 to RET4 indicating different registration conditions are stored in the table storage unit 21, If the registration unit 20 cannot register the music data D1 in any playlist PL based on the music characteristics and the first registration condition table RET1, the music data D1 is registered as the music characteristics and the second registration. By registering in one of the playlists PL based on the condition tables RET2 to RET4, the music data D1 can be registered almost certainly in any of the playlists PL, and the music data D1 depends on the music characteristics. The music data D1 can be classified almost accurately according to the characteristics of the music by registering it in the playlist PL.
[Selection] Figure 2

Description

  The present invention relates to a data registration device, a data registration method, and a data registration program, and is suitable for application to a playback device that plays back music data in accordance with, for example, a playlist that defines the playback order of music data.

A conventional automatic music content classification device first analyzes the tempo of a music, and refers to the music tempo table according to the analysis result to classify the music by the tempo. Next, the music content automatic classification device analyzes the key of the music, refers to the music key table based on the analysis result and the classification result based on the tempo, and further sorts the music classified at the tempo into one of the major and minor keys. Classify. Subsequently, the music content automatic classification device analyzes the frequency characteristics of the music, refers to the music frequency table based on the analysis result and the classification result by tempo and key, and further tunes the music classified by the tempo and key. And either bass or bass. In the automatic music content classification device, the service provider further examines the classified music and performs a recommendation operation, and allows the user to select an abstract keyword such as an image, so that the selected keyword is selected. The music which belonged was provided (for example, refer patent document 1).
JP 2003-58147 A (3rd page, 4th page, 5th page, Table 1, Table 2, Table 3)

  By the way, in the music content automatic classification device having such a configuration, after the music is classified by tempo, the music is classified into any of a plurality of types of groups by further classifying the music classified by the tempo in order by the key and frequency characteristics. Can be classified reliably. However, in the automatic music content classification device, when classifying music by key and frequency characteristics, the classification conditions are roughly set so that the music is classified into two types, such as major and minor, treble and bass, respectively. . For this reason, in the music content automatic classification device, there are cases where music having different characteristics is finally classified into the same group, and it cannot be said that music can be accurately classified according to characteristics.

  Therefore, the music content automatic classification device individually selects which tempo, key, and frequency characteristics are used for classification for each group for classifying music, and also the range of adaptation to these tempos, keys, and frequency characteristics. If the classification conditions are set relatively rigorously as described above, only songs having similar characteristics as much as possible can be finally classified into the same group. However, in the automatic music content classification device, if the classification conditions for each group are set relatively strict, there may be music that cannot be classified into any group, and the music is classified correctly according to the characteristics. There was a problem that was hard to say.

  The present invention has been made in consideration of the above points, and an object of the present invention is to propose a data registration apparatus, a data registration method, and a data registration program capable of classifying music data almost accurately according to the characteristics of music.

  In order to solve such a problem, in the present invention, a plurality of types of lists in which music data can be registered are stored in the list storage unit, and the music data is stored in the table storage unit according to the characteristics of music based on the music data. First and second registration condition tables indicating different registration conditions for registering in any one of a plurality of types of lists are stored, and the registration unit stores the music data as the music characteristics and If the music data cannot be registered in any list in accordance with the first registration condition table by registering in any one of a plurality of types of lists based on the one registration condition table, The music data is registered in one of a plurality of types of lists based on the music characteristics and the second registration condition table.

  Therefore, in the present invention, even when music data cannot be registered in the list based on the music characteristics and the first registration condition table, the music data is based on the music characteristics and the second registration condition table. Can be registered almost certainly in any one of a plurality of types of lists.

  According to the present invention, a plurality of types of lists capable of registering music data are stored in the list storage unit, and the music data is stored in the table storage unit according to the characteristics of music based on the music data. The first and second registration condition tables indicating different registration conditions for registering in any of the lists are stored, and the registration unit stores the music data and the music characteristics and the first registration condition table. If the music data cannot be registered in any of the lists according to the first registration condition table, the music data is stored in the music characteristics. And the second registration condition table, the music characteristics and the first registration condition table are registered in any one of a plurality of types of lists. Even if the music data cannot be registered in the list based on the above, the music data is almost certainly added to any one of the plural types of lists based on the characteristics of the music and the second registration condition table. Data registration apparatus, data registration method, and data registration program capable of registering music data in a list corresponding to the characteristics of the music and thus classifying the music data almost accurately according to the characteristics of the music Can be realized.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

(1) First Embodiment (1-1) Overview of Playback Device According to First Embodiment In FIG. 1, 1 indicates an overview of the configuration of a playback device according to the first embodiment as a whole. In the playback apparatus 1, the list storage unit 2 stores a plurality of types of lists in which music data can be registered. Further, in the playback apparatus 1, the table storage unit 3 includes first registration conditions indicating different registration conditions for registering music data in any one of a plurality of types of lists according to the characteristics of music based on the music data. And a second registration condition table. Further, in the playback apparatus 1, the registration unit 4 registers the music data in the first list by registering the music data in one of a plurality of types of lists based on the music characteristics and the first registration condition table. If it cannot be registered in any of the lists according to the registration condition table, the music data is registered in any one of a plurality of types of lists based on the characteristics of the music and the second registration condition table. With this configuration, even when the playback apparatus 1 cannot register the music data in the list based on the music characteristics and the first registration condition table, based on the music characteristics and the second registration condition table, The music data can be almost certainly registered in any one of a plurality of types of lists. Therefore, the playback device 1 can classify the music data almost accurately according to the music characteristics by registering the music data in a list according to the music characteristics.

(1-2) Detailed Configuration of the Playback Device According to the First Embodiment Next, a detailed hardware configuration of functional circuit blocks of the playback device 10 according to the first embodiment will be described with reference to FIG. The playback device 10 uses the playback unit 11 to record a media playback function for playing back music data from a medium such as a CD (Compact Disc) loaded in the playback device 10 or music data recorded on the media. Various functions such as a recording function and a list use reproduction function for reproducing music data using a playlist in which music data is registered can be realized.

  Here, the operation unit 12 of the playback apparatus 10 has a rectangular parallelepiped remote controller RM as shown in FIG. 3, for example. On one end of the front side of the remote controller RM, there is a toggle type power button RMA for turning on / off the power of the apparatus main body (ie, the playback apparatus 10), and a volume control for adjusting the volume of the music being played back. Button RMB is arranged. In addition, a toggle type function selection button RMC for switching and selecting the various functions described above and a setting button RMD for calling various setting items are arranged at the front central portion of the remote controller RM. In addition to this, the center of the front of the remote controller RM has a triangular shape with the apexes facing one end of the front and the other end of the front, respectively, and the upward direction for selecting the upper and lower directions on the display screen A selection button RME and a down direction selection button RMF, and a left direction selection button RMG and a right side having a triangular shape with apexes facing the front left side and the front right side, respectively, for selecting the left direction and the right direction on the display screen A direction selection button RMH and a determination button RMI for determining various selections on the display screen, for example, are arranged.

  Further, near the other front end of the remote controller RM, a playback start button RMJ, a playback stop button RMK, a fast forward button RML, a rewind button RMM, a music forward button RMN, and a music backward button RMO for controlling the reproduction of music data. In addition, a pause button RMP is arranged. Therefore, in the playback device 10, the user can easily select the various functions described above with a simple operation of pressing the function selection button RMC on the remote controller RM of the operation unit 12.

  That is, in the playback apparatus 10, the playback unit 11 activates the media playback function when a media playback function selection command for selecting a media playback function is input in response to an operation of the operation unit 12 (that is, the remote controller RM) by the user. . In this case, the reproduction unit 11 reproduces music data recorded on the medium loaded in the reproduction apparatus 10 and outputs it as music. Thereby, the reproduction | regeneration part 11 can listen to the music based on the reproduced music data with respect to a user.

Further, when a recording function selection command for selecting a recording function is input according to the operation of the operation unit 12 (that is, the remote controller RM) by the user, the reproducing unit 11 activates the recording function. In this case, the playback unit 11 reads out music data from the media loaded in the playback device 10, compresses and encodes the music data using a predetermined compression encoding method, and sends the music data to the data storage unit 13. As a result, the data storage unit 13 receives the ATRAC3 (Adaptive Transform)
It stores music data in a predetermined format such as Acoustic Coding 3), AAC (Advanced Audio Coding), WMA (Windows (registered trademark) Media Audio), RealAudio G2 Music Codec, MP3 (MPEG Audio Layer-3) format.

  In addition to this, when an acquisition request command for requesting acquisition of music data is input in response to an operation of the operation unit 12 by the user, the playback unit 11 receives an external device on the network NT via the communication unit 14. 15 is requested and distribution of music data is requested. As a result, the playback unit 11 downloads the music data transmitted from the external device 15 via the communication unit 14 and sends it to the data storage unit 13. Accordingly, the data storage unit 13 stores music data in a predetermined format downloaded from the external device 15 by the reproduction unit 11.

  Here, as shown in FIG. 4, a music data management database (hereinafter referred to as a music database) MDB is constructed in the data storage unit 13. Then, the playback unit 11 associates the music data D1 read from the medium by executing the recording function described above with respect to the music database MDB in the data storage unit 13 and the music data D1 downloaded from the external device 15 with respect to the music data D1. It is stored as music data management information CA together with related information (hereinafter referred to as data related information) DRE. In this case, the data-related information DRE includes attribute information (hereinafter referred to as data attribute information) DAT of the corresponding music data D1, and, for example, “sabi” of music based on the music data D1 in the music data D1. The feature position information SP indicating a position (for example, a position corresponding to the beginning of “rust”, hereinafter referred to as a feature position) corresponding to a characteristic part (hereinafter referred to as a feature part). And have.

  The data attribute information DAT includes a music title (hereinafter referred to as a music title) based on the corresponding music data D1, an artist name (hereinafter referred to as an artist name), and a genre name to which the music belongs. (Hereinafter referred to as a genre name). The data attribute information DAT includes the corresponding music data D1 provider (that is, the media and the external device 15), the storage date and time, the reproduction time of the music data D1 as a whole, the storage address of the music data D1 in the data storage unit 13, and the like. It also includes various information to be shown, image data of the jacket photo of the album in which the music data D1 is recorded (hereinafter referred to as jacket photo image data), and the like. Incidentally, the data attribute information DAT is downloaded from an external information providing device (not shown) at the time of recording the music data D1 from the medium, and is downloaded from the external device 15 together with the music data D1.

  In addition, the playback apparatus 10 is provided with a list storage unit 16. The list storage unit 16 stores a plurality of types of playlists PL that define the reproduction order of the plurality of music data D1. The list storage unit 16 also stores a channel list CL indicating a plurality of channels to which a single playlist PL is assigned, such as channels for selecting radio broadcast stations. Incidentally, in this channel list CL, channel numbers CN as identification information capable of individually identifying a plurality of channels are stored in a predetermined order (for example, the order in which the channel numbers CN increase sequentially). Yes.

  In this case, the playlist PL has attribute information (hereinafter referred to as list attribute information) LAT of the playlist PL. Also, in the playlist PL, a plurality of music registration information TR for registering a plurality of music data D1 in the playlist PL is stored in line according to an arbitrarily selected reproduction order of the plurality of music data D1. .

  The list attribute information LAT indicates channel allocation information CHA indicating the channel number CN of the channel to which the corresponding playlist PL is allocated, and the name of the corresponding playlist PL (hereinafter referred to as a list name). List name information LN is included. Incidentally, the list name is also the name of the channel to which the playlist PL is assigned. The list attribute information LAT also includes detailed list information LD composed of text data of a specific explanatory text for the structure of the corresponding playlist PL.

  Further, in the list attribute information LAT, a prescribed order reproduction form for reproducing a plurality of music data D1 registered in the corresponding playlist PL in accordance with a prescribed reproduction order, and the plurality of music data D1 are prescribed in advance. Also included is reproduction mode information PM indicating which reproduction mode is to be played in the shuffle playback mode in which the playback order is randomly rearranged. Incidentally, such a reproduction form can be appropriately selected by the user, for example. Further, the list attribute information LAT includes reproduction use setting information LS indicating whether or not the corresponding playlist PL is used for reproduction of the music data D1. Incidentally, whether or not the music data D1 is used for reproduction of the playlist PL can be arbitrarily selected by the user, for example.

  On the other hand, the music registration information TR stored in the playlist PL is generated for each music data D1 registered in the playlist PL. The music registration information TR includes reproduction setting information PS indicating whether or not the music data D1 registered in the playlist PL is reproduced. Incidentally, whether or not to reproduce each music data D1 registered in the playlist PL can be arbitrarily selected by the user, for example. Further, the music registration information TR is identified so that the music data D1 can be reproduced, such as the storage location of the music data D1 registered in the playlist PL (that is, the storage address of the music data D1 in the data storage unit 13). Information (hereinafter referred to as music instruction information) MID is also included.

  By the way, as the playlist PL having such a configuration, the music feature based on the music data D1 stored in the data storage unit 13 is analyzed, and the music data D1 searched based on the analyzed feature is registered. There is something generated. Also, as the playlist PL, when the list use reproduction function is activated, a predetermined number of music data D1 having a new storage date and time is automatically selected from all the music data D1 stored in the music database MDB of the data storage unit 13. In some cases, the contents of registration are updated each time the list-based reproduction function is activated by searching and registering.

  Therefore, the playback unit 11 causes the user to select a desired playlist PL as a channel from among these various playlists PL. Then, in accordance with the playlist PL selected by the user, the reproducing unit 11 sequentially reads and reproduces a plurality of music data D1 registered in the playlist PL from the data storage unit 13. As a result, the playback unit 11 allows the user to continuously listen to a plurality of music that is close to a favorite impression or a favorite image, or a plurality of music such as a favorite artist or genre.

  In other words, when a list use reproduction function selection command is input in response to an operation of the operation unit 12 (that is, the remote controller RM) by the user, the reproduction unit 11 activates the list use reproduction function. Incidentally, when the list-use reproduction function is selected via the operation unit 12 in the operation stop state (that is, the power is off) of the reproduction device 10, the reproduction unit 11 is activated in response thereto ( That is, when the power is turned on, the list-based reproduction function is activated in accordance with the activation. In addition, when the list-use playback function is selected via the operation unit 12 while another function is being executed, the playback unit 11 switches from the other function and activates the list-use playback function accordingly. .

  By the way, whenever the list-based playback function ends, the playback unit 11 sequentially updates and holds the channel number CN of the channel selected by the user when the list-based playback function ends (that is, at the end). . The playback unit 11 also holds a channel number CN of a channel selected in advance for selection at the initial stage of starting the list-based playback function (that is, the first). Then, the playback unit 11 automatically selects one of the channel selected at the end of the previous list-based playback function and the channel selected in advance at the start of the list-based playback function. It is set.

  That is, the playback unit 11 selects either the channel number CN of the channel selected at the end of the previous list-based playback function or the channel number CN of the preselected channel according to the contents of the setting, The channel number of a channel that is automatically selected every time the list-based reproduction function is activated (hereinafter referred to as the activation initial use channel number) CN. Therefore, when the reproduction unit 11 activates the list-based reproduction function, the reproduction unit 11 automatically selects a channel according to the activation initial use channel number CN. Then, the playback unit 11 reads the playlist PL assigned to the automatically selected channel together with the channel list CL from the list storage unit 16.

  In this state, the playback unit 11 reads the corresponding music data D1 and data related information DRE from the data storage unit 13 in accordance with the music instruction information MID in the music registration information TR stored in the playlist PL. Then, the playback unit 11 starts playback from the feature position of the music data D1 according to the feature position information SP included in the data related information DRE, and allows the user to listen to music from the head of the feature portion.

  Also, the playback unit 11 is a channel for switching channels by the user via the operation unit 12 during playback from the feature position for the music data D1 (that is, during playback from the feature position to the tail position for the music data D1). When a switching command is input, the channel after switching is determined according to the channel number CN of the currently selected channel and the sequence of channel numbers CN stored in the channel list CL. Then, the playback unit 11 reads the playlist PL assigned to the channel after switching from the list storage unit 16 and reads the music data D1 and the data related information DRE from the data storage unit 13 according to the playlist PL. As a result, the playback unit 11 interrupts playback of the music data D1 at that time, and also plays back the music data D1 from the feature position according to the feature position information SP included in the data related information DRE, as described above. Start.

  In this way, the playback unit 11 is registered in accordance with the playlist PL assigned to the channel after switching every time the user requests channel switching (that is, every time a channel switching command is input). The music data D1 being played is reproduced from the characteristic position. As a result, the playback unit 11 causes the user to actually listen to music based on the music data D1 that can be played back according to the playlist PL (that is, registered) from the beginning of the characteristic portion, and to play back the music data D1. The playlist PL to be used can be selected.

  Further, when the user inputs a playback music switching command for switching the music data D1 to be played back through the operation unit 12 during playback from the characteristic position with respect to the music data D1, the playback unit 11 plays the currently selected play. In accordance with the list PL, new music data D1 and data related information DRE are read from the data storage unit 13 in the same manner as described above. As a result, the playback unit 11 interrupts playback of the music data D1 at that time, and starts playback of the new music data D1 from the feature position according to the feature position information SP included in the data related information DRE.

  In this way, the reproduction unit 11 reproduces the music data D1 after switching from the characteristic position every time the user requests switching of the music data D1 (that is, every time a reproduction music switching command is input). Thereby, the playback unit 11 causes the user to actually listen to music based on the music data D1 that can be played back (that is, registered) according to the playlist PL from the head of the characteristic portion, and plays back the music according to the playlist PL. Desired music data D1 can be selected (ie, searched) from a plurality of possible music data D1.

  The playback unit 11 inputs a music selection determination command for selecting and determining the music data D1 being played back as the desired music data D1 via the operation unit 12 during playback from the characteristic position of the music data D1. Then, the playback of the music data D1 at that time (that is, playback started from the characteristic position) is temporarily stopped, and playback from the head position of the music data D1 is started again. As described above, when the desired music data D1 is selected by the user, the reproducing unit 11 can listen to the entire music based on the desired music data D1.

  Incidentally, when the reproduction from the head position of the music data D1 is completed (that is, when the music data D1 is reproduced from the head position to the tail position), the reproduction unit 11 performs data storage according to the currently selected playlist PL. 13 newly reads out music data D1 and data related information DRE. Then, the playback unit 11 starts playback of the new music data D1 from the top position following the music data D1 that has been played back at that time. Further, the playback unit 11 does not require any channel switching or music data D1 switching by the user during playback from the feature position of the music data D1, and the playback from the feature position of the music data D1 to the tail position ends. In this case, music data D1 and data-related information DRE are newly read from the data storage unit 13 in accordance with the currently selected playlist PL. Then, the playback unit 11 starts playback of the new music data D1 from the top position following the music data D1 that has been played back at that time.

  In this way, the reproduction unit 11 reproduces the music data D1 that has been reproduced from the characteristic position to the tail position, and when the reproduction of the music data D1 is completed, the user performs a plurality of registrations in the playlist PL. It is assumed that a request is made to listen to a plurality of music based on the music data D1. The reproducing unit 11 can sequentially reproduce the entire plurality of music data D1 in accordance with the currently selected playlist PL so that the entire plurality of music can be continuously listened to. Incidentally, when the reproduction unit 11 sequentially reproduces the music data D1 from the characteristic position or the head position in accordance with one playlist PL, a plurality of music registration information TR stored in the playlist PL is applied to the rules. According to the sequence according to the sequential reproduction mode or the shuffle reproduction mode, it is as if the head and the tail are connected. Thereby, the reproducing unit 11 can cyclically reproduce a plurality of music data D1 registered in one playlist PL.

  In addition, the playback unit 11 plays music that is played back by the user via the operation unit 12 during playback from the beginning position with respect to the music data D1 (that is, during playback from the beginning position to the tail position with respect to the music data D1). When a switching command is input, new music data D1 and data related information DRE are read from the data storage unit 13 in the same manner as described above in accordance with the currently selected playlist PL. As a result, the playback unit 11 interrupts playback of the music data D1 at that time, and starts playback of the new music data D1 from the feature position according to the feature position information SP included in the data related information DRE. In this way, even when the reproduction unit 11 reproduces the music data D1 selected by the user, if the reproduction unit 11 is requested to newly search for the desired music data D1, the reproduction unit 11 interrupts the reproduction accordingly. . Then, in the same manner as described above, the playback unit 11 causes the user to actually listen to new music from the head of the characteristic portion according to the currently selected playlist PL, and again selects the desired music data D1 (ie, search) ).

  When the user inputs a channel switching command via the operation unit 12 during playback from the beginning position for the music data D1, the playback unit 11 and the channel list CL of the channel number CN of the currently selected channel are displayed. The channel after switching is determined in accordance with the sequence of channel numbers CN stored in. Then, the playback unit 11 reads out the playlist PL assigned to the channel after switching from the list storage unit 16 and, similarly to the above, from the data storage unit 13 according to the playlist PL, the music data D1 and the data related information DRE. Is read. As a result, the playback unit 11 interrupts playback of the music data D1 at that time, and starts playback of the new music data D1 from the feature position according to the feature position information SP included in the data related information DRE.

  In this way, the reproduction unit 11 is requested to switch the playlist PL used for reproduction of the music data D1 even if the plurality of music data D1 is reproduced according to the playlist PL selected by the user ( That is, when a channel switching command is input), the reproduction is interrupted accordingly. Then, the playback unit 11 causes the user to actually listen to the music from the beginning of the characteristic portion according to another playlist PL different from the playlist PL that has been used for playback of the music data D1 until that time, as described above. Thus, it is possible to select a new playlist PL used for reproducing the music data D1.

  By the way, when the playback unit 11 activates the list-based playback function, the playback unit 11 sends the channel list CL read from the list storage unit 16 to the display processing unit 17. Each time the playback unit 11 reads the playlist PL from the list storage unit 16, the playback unit 11 also sends the list attribute information LAT stored in the read playlist PL to the display processing unit 17. Further, each time the reproducing unit 11 reads the data related information DRE together with the music data D1 from the data storage unit 13, the reproducing unit 11 also sends the data attribute information DAT included in the data related information DRE to the display processing unit 17.

  Thereby, the display processing unit 17 generates selection screen data for selecting the channel and the music data D1 based on the channel list CL, the list attribute information LAT, and the data attribute information DAT in accordance with the activation of the list use reproduction function. . The display processing unit 17 sends the selection screen data to the display unit 18. Thereby, the display processing unit 17 displays the selection screen 20 as shown in FIG. 5 based on the selection screen data on the display unit 18.

  In this case, the selection screen 20 is provided with a channel selection region 21 that is long in the vertical direction on the left side of the screen and a music selection region 22 on the left side of the remaining screen. In the central portion of the channel selection area 21, a display 23 (hereinafter referred to as a selected channel notification icon) 23 for notifying the currently selected channel by the channel number CN is displayed. Further, on the upper side and the lower side of the channel selection area 21, a channel that can be selected by switching from the currently selected channel according to the arrangement of the channel numbers CN stored in the channel list CL is notified by the channel number CN. Indicators (hereinafter referred to as selectable channel notification icons) 24 and 25 are displayed.

  In the channel selection area 21, for example, a triangular first mark M <b> 1 with a vertex facing upward is displayed above the selectable channel notification icon 24 displayed on the upper side. As a result, the selection screen 20 can be selected, for example, by pressing the upward selection button RME having the same shape and orientation as the first mark M1 in the channel selection area 21 in the remote controller RM each time the selected channel notification icon 23 is displayed. Is switched to, for example, one smaller channel number CN in accordance with the arrangement of the channel numbers CN in the channel list CL, so that the user can intuitively recognize that a desired channel can be selected.

  Further, in the channel selection area 21, for example, a triangular second mark M <b> 2 having a vertex directed downward is displayed further below the selectable channel notification icon 25 displayed on the lower side. As a result, the selection screen 20 displays the selected channel notification icon 23 each time, for example, when the remote controller RM depresses the downward selection button RMF having the same shape and orientation as the second mark M2 in the channel selection area 21. Is switched to, for example, a channel number CN that is larger by one in accordance with the arrangement of the channel numbers CN in the channel list CL, so that the user can intuitively recognize that a desired channel can be selected.

  Incidentally, in the playback apparatus 10, for example, if the playlist PL assigned to any channel is set not to be used for playback of the music data D1, the playlist PL is not selected as the assigned channel. Has been made. For this reason, in the channel selection area 21 of the selection screen 20, the channel number CN of the channel to which the playlist PL set not to be used for reproduction of the music data D1 is assigned can be selected as the selected channel notification icon 23. The channel notification icons 24 and 25 are not displayed.

  Therefore, the selection screen 20 skips the channel number CN of the channel to which the playlist PL that is set not to be used for reproduction of the music data D1 is pressed if the upward selection button RME is pressed, Recognizing that the desired channel can be selected by switching the channel number CN indicated by the selected channel notification icon 23 to at least one smaller channel number CN (that is, at least one smaller channel number CN indicated by the selectable channel notification icon 24). I am letting. Further, the selection screen 20 skips the channel number CN of the channel to which the playlist PL that is set not to be used for reproduction of the music data D1 when the downward selection button RMF is pressed, Recognizing that a desired channel can be selected by switching the channel number CN indicated by the selected channel notification icon 23 to at least one larger channel number CN (that is, at least one larger channel number CN indicated by the selectable channel notification icon 25). I am letting.

  On the other hand, on the left side of the music selection area 22, a list name 26 of the playlist PL assigned to the currently selected channel and a specific description 27 for the configuration of the playlist PL (that is, the list described above). Is displayed based on text data as the detailed information LD). In the music selection area 22, a jacket photo image 29 is displayed on the right side as information related to the music data D <b> 1 that is currently being reproduced, and a music title 30 and an artist name 31 are displayed below the jacket photo image 29. ing.

  In addition to this, on the left side of the jacket photo image 29, for example, a triangular third mark M3 with the apex directed to the left is displayed in the music selection area 22. As a result, the selection screen 20 can be played back every time the left selection button RMG having the same shape and orientation as the third mark M3 in the music selection area 22 is pressed on the remote controller RM, for example. Can be intuitively recognized that it can be switched to return to the previous music data D1 in accordance with the currently selected playlist PL.

  In the music selection area 22, for example, a triangular fourth mark M <b> 4 is displayed on the right side of the jacket photo image 29 with the apex directed to the right side. As a result, the selection screen 20 can be played back every time the right selection button RMH having the same shape and orientation as the fourth mark M4 in the music selection area 22 is pressed on the remote controller RM, for example. Can be intuitively recognized that it can be switched to be sent to the next music data D1 according to the currently selected playlist PL.

  By the way, for channel switching, there is a switching direction along the sequence of channel numbers CN stored in the channel list CL. For this reason, in the state where the selection screen 20 is displayed on the display unit 18 by the display processing unit 17, the playback unit 11 is operated by pressing the up direction selection button RME or the down direction selection button RMF of the remote controller RM to input a channel switching command. Then, based on the channel list CL, the channel number CN of the currently selected channel, and the switching direction corresponding to the upward selection button RME or the downward selection button RMF that has been pressed at that time, Determine the channel. Incidentally, at this time, the reproducing unit 11 is configured to cyclically switch channels by handling a plurality of channel numbers CN stored in the channel list CL like a ring connecting these heads and tails. ing.

  When the reproducing unit 11 newly reads the playlist PL from the list storage unit 16 and reads the data related information DRE from the data storage unit 13 according to the determined channel, the list related information stored in the playlist PL is read. The data attribute information DAT included in the LAT and the data related information DRE is sent to the display processing unit 17. Accordingly, the display processing unit 17 displays the channel selection area 21 and the music selection area 22 on the selection screen 20 displayed on the display unit 18 based on the list attribute information LAT and the data attribute information DAT given from the reproduction unit 11. Update the contents. In this way, the playback unit 11 allows the user to visually check the music based on the music data D1 from the beginning of the characteristic portion, and also visually confirm the selected channel notification icon 23, the list name 26, and the like on the selection screen 20, It is possible to select a desired playlist PL used for reproducing the music data D1.

  The music data D1 to be reproduced also has a switching direction in accordance with the reproduction order of the music data D1 according to the playlist PL. For this reason, in the state in which the selection screen 20 is displayed on the display unit 18 by the display processing unit 17, the playback unit 11 presses the left direction selection button RMG or the right direction selection button RMH of the remote controller RM and issues a playback music switching command. When input, the playback order of the music data D1 defined by the playlist PL (that is, the playback order conforms to one of the specified order playback mode and the random playback mode); The music data D1 after switching is discriminated based on the left direction selection button RMG and the switching direction corresponding to the right direction selection button RMH pressed at that time. Incidentally, at this time, the playback unit 11 treats the music instruction information MID corresponding to the plurality of music data D1 whose playback order is defined by the playlist PL like a ring connecting these heads and tails. The music data D1 is switched cyclically.

  Then, when the reproduction unit 11 newly reads the data related information DRE from the data storage unit 13 in accordance with the determined music data D1, the reproduction unit 11 sends the data attribute information DAT included in the data related information DRE to the display processing unit 17. . As a result, the display processing unit 17 displays the display contents of the selection screen 20 displayed on the display unit 18 based on the data attribute information DAT given from the reproduction unit 11 (that is, the jacket photo image 29, the music title 30, the artist name). 31) is updated. In this way, the playback unit 11 allows the user to visually check the music title 30 and the artist name 31 on the selection screen 20 while actually listening to the music based on the music data D1 from the beginning of the characteristic portion, and to make a desired check. The music data D1 can be selected.

  When the selection button RMI of the remote controller RM is pressed down and the music selection determination command is input while the selection screen 20 is displayed on the display unit 18 by the display processing unit 17, the playback unit 11 performs this operation. The display processing unit 17 is notified. At this time, the display processing unit 17 displays the list attribute information LAT given from the playback unit 11 at that time (that is, the list attribute information LAT stored in the playlist PL selected at that time) and the data attribute. Based on the information DAT (that is, data attribute information DAT corresponding to the music data D1 being reproduced at that time), reproduction screen data for notifying the music data D1 being reproduced is generated. The display processing unit 17 sends the reproduction screen data to the display unit 18. As a result, the display processing unit 17 displays a reproduction screen 40 as shown in FIG. 6 based on the reproduction screen data instead of the selection screen 20 on the display unit 18.

  In this case, the playback screen 40 has a selection channel notification area 41 on the left side of the screen and a playback music notification area 42 on the left side of the remaining screen. In the selected channel notification area 41, a display 43 (hereinafter referred to as a selected channel notification icon) 43 for displaying the currently selected channel as the channel number CN is displayed. In the playback music notification area 42, the list name 44 of the playlist PL assigned to the currently selected channel is displayed on the left side. Further, in the reproduction music notification area 42, a music title 45, an artist name 46, and a jacket photo image 47 are displayed as information regarding the music data D1 currently being reproduced.

  When the music data D1 to be played back is switched in accordance with the playlist PL while the playback screen 40 is displayed on the display unit 18 (that is, the playback to the tail position with respect to the music data D1 is completed). When new music data D1 is reproduced from the head position), the display content for the reproduction music notification area 42 of the reproduction screen 40 is updated based on the new data attribute information DAT given from the reproduction unit 11 at that time. As a result, the display processing unit 17 allows the user to confirm the music title 45, artist name 46, and the like for the music data D1 that is currently being played, based on the display content of the playback screen 40, and to play the music data D1. It is possible to easily check the playlist PL being used.

  By the way, the reproduction unit 11 temporarily resets an internal timer every time reproduction of the music data D1 from the characteristic position is started and measures the reproduction time. The reproduction unit 11 then reproduces the music data D1 from the feature position for a predetermined time (the predetermined time is shorter than the time required for reproduction from the feature position to the tail position for the music data D1. If no command is input via the operation unit 12 until the predetermined time is reached, the display processing unit indicates that the music data D1 has been reproduced from the characteristic position for a predetermined time when the reproduction time reaches the predetermined time. 17 is notified. When the playback unit 11 is notified that the music data D1 has been played from the characteristic position for a predetermined time, the display processing unit 17 automatically changes the selection screen 20 displayed on the display unit 18 to the playback screen 40 at that time. Switch.

  Further, the display processing unit 17 displays the reproduction screen 40 on the display unit 18 and receives data attribute information DAT together with new list attribute information LAT from the reproduction unit 11 (that is, the user switches the channel). The selected screen data is generated based on the list attribute information LAT and the data attribute information DAT. Thereby, the display processing unit 17 switches the reproduction screen 40 displayed on the display unit 18 to the selection screen 20 again. Further, the display processing unit 17 is instructed to switch the music data D1 when the new data attribute information DAT is given from the playback unit 11 while the playback screen 40 is displayed on the display unit 18 (ie, the music data D1 is switched by the user). Then, selection screen data is generated based on the data attribute information DAT. Thereby, the display processing unit 17 switches the reproduction screen 40 displayed on the display unit 18 at this time to the selection screen 20 again.

  That is, as shown in FIG. 7, the display processing unit 17 displays a selection screen 20 on the display unit 18 when the list use reproduction function is activated. In this state, when the music data D1 is reproduced from the characteristic position by the reproduction unit 11 in response to a user's request for channel switching or music data D1 switching, the display processing unit 17 reproduces the music reproduced from the characteristic position. The display content of the selection screen 20 is updated according to the data D1. The display processing unit 17 displays the selection screen 20 on the display unit 18 and the reproduction unit 11 reproduces the music data D1 from the characteristic position for a predetermined time, and the music data D1 being reproduced is displayed. When it is notified that the selection is determined as the desired music data D1, the display unit 18 is switched from the selection screen 20 to the reproduction screen 40 and displayed accordingly.

  When the music data D1 is reproduced from the top position by the reproduction unit 11 while the reproduction screen 40 is displayed on the display unit 18, the display processing unit 17 displays the music data D1 reproduced from the top position. Accordingly, the display content of the playback screen 40 is updated. By the way, the display processing unit 17 displays the playback screen 40 on the display unit 18 and the music data D1 is stored in the characteristic position by the playback unit 11 in response to a user's request for channel switching or music data D1 switching. Is reproduced from the reproduction screen 40 to the selection screen 20 and displayed on the display unit 18. In this way, the display processing unit 17 updates the display contents of the selection screen 20 and the reproduction screen 40 displayed on the display unit 18 according to switching of the channel and the music data D1, and the selection screen 20 and the reproduction screen 40. Switch to display. Accordingly, the display processing unit 17 can notify the user of the selected channel, the playlist PL, and the music data D1 being reproduced via the selection screen 20 and the reproduction screen 40.

  As a result, as shown in FIG. 8, the playback unit 11 feels as if the user selects a radio broadcast station by switching channels during reception of a radio broadcast while the list-use playback function is being executed. Thus, it is possible to easily select a desired playlist PL by appropriately switching channels. In addition, while the channel is switched by the user and the desired playlist PL is selected in this way, the playback unit 11 sequentially plays the music data D1 from the characteristic position or the head position without interruption, and , Can listen to more music.

  Incidentally, the playback unit 11 is selected when the user continuously presses the up direction selection button RME and the down direction selection button RMF of the remote controller RM relatively quickly and starts the continuous pressing operation. The selection of other channels existing between the previously selected channel and the channel selected when the speed of the continuous pressing operation is slowed to some extent is ignored. As a result, the playback unit 11 follows the playlist PL assigned to a large number of channels after a relatively quick continuous pressing operation is started and until the speed of the continuous pressing operation becomes somewhat slow. By sequentially reproducing the different music data D1 little by little, it is avoided that a plurality of different music sounds like noises several times.

  In practice, when the playback unit 11 starts the list usage playback function in response to the user selecting the list usage playback function via the operation unit 12, the list usage playback function startup processing procedure RT1 shown in FIG. To start. When starting the list use reproduction function activation processing procedure RT1, the reproduction unit 11 acquires the activation initial use channel number CN in step SP1, and proceeds to the next step SP2. In step SP2, the reproducing unit 11 reads out the channel list CL from the list storage unit 16, and also reads out the playlist PL assigned to the channel of the activation initial use channel number CN from the list storage unit 16, and next step SP3. Move on.

  In step SP3, the reproducing unit 11 determines whether or not the playlist PL has been read correctly. If a positive result is obtained in step SP3, this indicates that the data of the playlist PL is not damaged, for example. Therefore, when the reproducing unit 11 obtains such a positive result, the reproducing unit 11 proceeds to next step SP4. In step SP4, the playback unit 11 executes channel initialization processing using the playlist PL. Here, as a channel initialization process, the playback unit 11 is defined by the playlist PL, for example, when the playback mode information PM included in the list attribute information LAT of the playlist PL indicates a shuffle playback mode. A process for changing the reproduction order of the music data D1 to another order randomly arranged is executed. Then, the reproduction unit 11 performs such channel initialization processing, and then proceeds to the next step SP5.

  In step SP5, the playback unit 11 uses the playlist PL for playback of the music data D1 based on the playback usage setting information LS included in the list attribute information LAT of the playlist PL after the channel initialization process. Determine whether it is set. If a negative result is obtained in step SP5, this means that the music data D1 cannot be reproduced using the playlist PL. Accordingly, when the reproducing unit 11 obtains such a negative result, the reproducing unit 11 proceeds to step SP6.

  Here, among the plurality of channels, there is one in which a playlist PL that is set to be used for reproducing the music data D1 and that does not change the setting is fixedly assigned. Accordingly, in step SP6, the playback unit 11 acquires the channel number CN of the channel to which the playlist PL is assigned, and returns to step SP2. As a result, the playback unit 11 reads the playlist PL assigned to the channel with the channel number CN from the list storage unit 16, and again executes the same processing as described above.

  If a positive result is obtained in step SP5, this indicates that the music data D1 can be reproduced using the playlist PL. Accordingly, when the reproducing unit 11 obtains such a positive result, the reproducing unit 11 proceeds to next step SP7. In step SP7, the reproducing unit 11 reads the music data D1 having the first reproduction order from the data storage unit 13 according to the playlist PL, and proceeds to the next step SP8.

  In step SP8, the reproducing unit 11 determines whether or not the music data D1 has been read correctly at this time. If a positive result is obtained in step SP8, this indicates that the music data D1 read at this time is not damaged, for example. Therefore, when the reproducing unit 11 obtains such a positive result, the reproducing unit 11 proceeds to next step SP9. In step SP9, the reproduction unit 11 causes the display processing unit 17 to display the selection screen 20 described above on the display unit 18, starts reproduction from the characteristic position with respect to the music data D1, and proceeds to the next step SP10. The list use reproduction function activation processing procedure RT1 is terminated.

  Incidentally, if a negative result is obtained in step SP3 described above, this indicates that, for example, the data of the playlist PL is damaged. Accordingly, when the reproducing unit 11 obtains such a negative result, the reproducing unit 11 proceeds to step SP11. If a negative result is obtained in step SP8, this indicates that the music data D1 read at this time is damaged, for example. Therefore, the reproducing unit 11 proceeds to step SP11 even when such a negative result is obtained. In step SP11, the reproduction unit 11 notifies the user that the music data D1 cannot be reproduced, for example, as error processing, and then proceeds to step SP10. In this way, the playback unit 11 activates the list use playback function.

  Next, channel switching processing during execution of the list-based reproduction function will be described. When the channel switching command is given in accordance with the operation of the operation unit 12 by the user while the list-use playback function is being executed, the playback unit 11 starts the channel switching processing procedure RT2 shown in FIG. Then, when starting the channel switching processing procedure RT2, the reproducing unit 11 in step SP21, according to the arrangement of the channel numbers CN registered in the channel list CL and the switching direction of the channel number CN designated by the user, The channel number CN increased by 1 or the channel number CN decreased by 1 is selected as the channel number CN after switching, and the process proceeds to the next step SP22. In step SP22, the reproducing unit 11 reads the playlist PL assigned to the channel of the channel number CN after switching from the list storage unit 16, and proceeds to the next step SP23.

  In step SP23, the reproducing unit 11 determines whether or not the playlist PL has been read correctly. If a positive result is obtained in step SP23, this indicates that, for example, the data of the playlist PL is not damaged. Therefore, when the reproducing unit 11 obtains such a positive result, the reproducing unit 11 proceeds to next step SP24. In step SP24, the reproducing unit 11 executes a channel change process.

  In step SP24, for example, when the playback mode information PM included in the list attribute information LAT of the playlist PL indicates the shuffle playback mode, the playback unit 11 is defined by the playlist PL as the channel change process. Processing for changing the playback order of the music data D1 to be changed to another order randomly rearranged is executed. Then, after executing such a channel change process, the reproducing unit 11 proceeds to the next step SP25.

  In step SP25, the playback unit 11 determines whether or not the playlist PL is set to be used for playback of the music data D1 based on the playback usage setting information LS included in the list attribute information LAT of the playlist PL. Is determined. If a negative result is obtained in step SP25, this indicates that the music data D1 cannot be reproduced using the playlist PL. Accordingly, when the reproducing unit 11 obtains such a negative result, the reproducing unit 11 returns to step SP21 to newly switch the channel number CN of the channel corresponding to the playlist PL to a channel number CN further increased by 1 or a channel number CN decreased by 1. The same processing as described above is executed again as the subsequent channel number CN.

  If a positive result is obtained in step SP25, this indicates that the music data D1 can be reproduced using the playlist PL. Accordingly, when the reproducing unit 11 obtains such a positive result, the reproducing unit 11 proceeds to next step SP26. In step SP26, the reproducing unit 11 reads the music data D1 having the first reproduction order from the data storage unit 13 in accordance with the playlist PL assigned to the channel after switching, and proceeds to the next step SP27. In step SP27, the reproducing unit 11 determines whether or not the music data D1 has been read correctly at this time. If a positive result is obtained in step SP27, this indicates that the music data D1 read at this time is not damaged, for example. Accordingly, when the reproducing unit 11 obtains such a positive result, the reproducing unit 11 proceeds to next step SP28.

  In step SP28, the reproducing unit 11 interrupts the reproduction of the music data D1 being reproduced according to the playlist PL assigned to the channel before switching, and proceeds to the next step SP29. In step SP29, the reproducing unit 11 causes the display processing unit 17 to update the display content of the selection screen 20 displayed on the display unit 18, and reproduces the music data D1 corresponding to the channel after switching from the characteristic position. To move to the next step SP30. Thereby, in step SP30, the reproducing unit 11 ends the channel switching processing procedure RT2.

  Incidentally, if a negative result is obtained in step SP23 described above, this indicates that, for example, the data of the playlist PL is damaged. Accordingly, when the reproducing unit 11 obtains such a negative result, the reproducing unit 11 proceeds to step SP31. If a negative result is obtained in step SP27, this indicates that, for example, the music data D1 is damaged. Therefore, the reproducing unit 11 proceeds to step SP31 even when such a negative result is obtained. In step SP31, the reproduction unit 11 notifies the user that the music data D1 cannot be reproduced, for example, as error processing, and then proceeds to step SP30. In this way, the playback unit 11 switches channels in response to a user request during execution of the list-based playback function.

  Next, playback music switching processing during execution of the list-based playback function will be described. When the reproduction music switching command is given in accordance with the operation of the operation unit 12 by the user while the list-use reproduction function is being executed, the reproduction unit 11 starts the reproduction music switching processing procedure RT3 shown in FIG. When the playback unit 11 starts the playback music switching processing procedure RT3, in step SP41, the playback unit 11 changes the arrangement of the music instruction information MID registered in the currently selected playlist PL (when the shuffle playback mode is designated, the change is made). After switching the music data D1 to be played back before or the music data D1 to be played back one after the music data D1 being played back in accordance with the switching direction of the music data D1 designated by the user Music data D1. Then, the reproducing unit 11 reads the music data D1 after switching from the data storage unit 13, and proceeds to the next step SP42.

  In step SP42, the reproducing unit 11 determines whether or not the music data D1 after switching can be reproduced. If a negative result is obtained in step SP42, this means that, for example, the music data D1 after switching is damaged or the reproduction setting information PS of the music registration information TR corresponding to the music data D1 after switching is The fact that the music data D1 is not reproduced indicates that the music data D1 cannot be reproduced as it is. Therefore, when the reproducing unit 11 obtains such a negative result, the reproducing unit 11 returns to step SP41 and newly switches the music data D1 to be reproduced one before the music data D1 after switching or the music data D1 to be reproduced after one after switching. As the music data D1, the same processing as described above is executed again.

  On the other hand, if an affirmative result is obtained in step SP42, this means that, for example, the music data D1 after switching is not damaged, and the playback setting of the music registration information TR corresponding to the music data D1 after switching is set. The fact that the information PS indicates that the music data D1 can be reproduced indicates that the music data D1 can be reproduced without any problem. Accordingly, when the reproducing unit 11 obtains such a positive result, the reproducing unit 11 proceeds to next step SP43. In step SP43, the reproducing unit 11 interrupts the reproduction of the music data D1 currently being reproduced, and proceeds to the next step SP44. In step SP44, the playback unit 11 updates the display content of the selection screen 20 displayed on the display unit 18 to the display processing unit 17, and starts playback from the characteristic position for the music data D1 after switching. The process proceeds to the next step SP45. Thereby, in step SP45, the reproducing unit 11 ends the reproduction music switching processing procedure RT3. In this way, the playback unit 11 switches the music data D1 to be played back in response to a user request during execution of the list-based playback function.

  In addition to such a configuration, in the case of the playback apparatus 10, the analysis unit 19 analyzes the characteristics of music based on the music data D1 used when registering the music data D1 in the playlist PL. However, when the music data D1 read from the medium by the reproduction unit 11 or the music data D1 downloaded from the external device 15 is stored in the data storage unit 13, the analysis unit 19 is in a state where the processing load on the apparatus main body is low. The characteristics of the music based on the music data D1 are analyzed.

  Therefore, when the playback unit 11 stores the music data D1 read from the medium or the music data D1 downloaded from the external device 15 in the data storage unit 13, the playback unit 11 performs the music attribute data DAT corresponding to the music data D1 with respect to the music data D1. An analysis flag indicating whether or not the analysis of the music feature based on the data D1 has been completed is stored. The analysis flag stored for the data attribute information DAT when the playback unit 11 stores the music data D1 is set to indicate that the music feature based on the corresponding music data D1 has not been analyzed. Therefore, when the analysis unit 19 analyzes the music feature based on the music data D1, based on the analysis flag stored in the data attribute information DAT in the data storage unit 13, the analysis unit 19 selects the music data D1 whose music feature is not analyzed. It is designed to be searchable.

  In addition, when the user inputs a power-off command via the remote controller RM of the operation unit 12 (that is, when the user performs a power-off operation on the apparatus main body), the playback apparatus 10 is powered on accordingly. From the state, the operation of each circuit block such as the reproducing unit 11 is stopped, and the standby state is entered. By the way, the standby state means that the processing load of the apparatus main body is reduced because most circuit blocks such as the reproduction unit 11, the communication unit 14, the display processing unit 17 and the display unit 18 in the apparatus main unit stop operating. State. Even when the playback device 10 is in a power-on state, the playback unit 11 stops all the functions such as the media playback function described above and becomes idle state where the processing load is below a certain level (that is, the playback unit 11 is turned on). When the user enters the idle state and no operation is performed on the apparatus main body by the user for a certain period of time), the operation of the remaining circuit blocks is automatically stopped to shift to the standby state.

  The analysis unit 19 can allow the user to set whether or not to automatically analyze the music feature based on the music data D1 in the standby state of the apparatus main body. Accordingly, when the analysis unit 19 is set to automatically analyze the music characteristics based on the music data D1, in response to the power-off command input from the operation unit 12 by the user's power-off operation. Detecting that the apparatus main body has shifted to the standby state (that is, that the apparatus main body has entered a low processing load state), and starts analysis processing for analyzing music characteristics based on the music data D1.

  If the analysis unit 19 is set to automatically analyze music characteristics based on the music data D1, the operation state of the reproduction unit 11 and the user's operation with respect to the operation unit 12 during the power-on state of the apparatus main body. The operation status is monitored. Therefore, the analysis unit 19 can also detect that the playback unit 11 is in an idle state and the apparatus main body is shifted to the standby state as it is (that is, the apparatus main body is in a low processing load state). As a result, the analysis unit 19 also starts the music feature analysis process based on the music data D1 even when the apparatus main body shifts from the idle state of the playback unit 11 to the standby state.

  By the way, the analysis unit 19 periodically calculates the number of all music data D1 stored in the data storage unit 13 and the number of music data D1 whose music characteristics are unanalyzed while the apparatus main body is in a power-on state. To detect. When the analysis unit 19 detects that music data D1 whose music characteristics are unanalyzed exceeds a predetermined ratio among all music data D1 stored in the data storage unit 13, the fact is notified. A notification screen for notification is displayed on the display unit 18 via the display processing unit 17.

  Accordingly, when the analysis unit 19 is set so as not to automatically analyze the music feature based on the music data D1, even if a plurality of music data D1 is newly stored in the data storage unit 13, the analysis unit 19 It is possible to prompt the user to analyze music characteristics based on the music data D1. Further, even when the analysis unit 19 is set to automatically analyze the characteristics of music based on the music data D1, while the playback device 10 continues to be used without turning off the power, When a plurality of pieces of music data D1 are newly stored in the data storage unit 13, the user can be prompted to analyze the characteristics of music based on the music data D1.

  If the analysis unit 19 is set to automatically analyze the music feature based on the music data D1 when it is notified that there is music data D1 whose music feature is not analyzed, After the notification, when the apparatus main body shifts to a standby state and detects a low processing load on the apparatus main body, music characteristic analysis processing based on the music data D1 is started. In contrast, when the analysis unit 19 notifies the user that there is music data D1 whose music characteristics are not analyzed, the analysis unit 19 does not automatically analyze the music characteristics based on the music data D1. If set, the user is notified of two methods for analyzing the characteristics of music based on the music data D1 in accordance with the notification. In this case, when the analysis unit 19 performs a power-off operation after re-setting the user to automatically analyze music characteristics based on the music data D1 as one method, the analysis data 19 is stored in the music data D1. Notify that unparsed features of the music based can be analyzed.

  In addition, as another method, the analysis unit 19 manually requests execution of analysis even when the apparatus main body is in a power-on state (that is, an analysis execution command is input via the operation unit 12). Thus, it is also notified that unanalyzed features of music based on the music data D1 can be analyzed. The playback unit 11 executes any function such as a disc playback function when an analysis execution command is input by the user via the operation unit 12 (that is, when an analysis execution operation is performed by the user). If this is the case, the function is forcibly terminated to stop its own operation.

  Therefore, even if the analysis unit 19 is set not to automatically analyze the music feature based on the music data D1, if the user manually performs the analysis of the music feature, the analysis unit 19 responds to the request. The state where the processing load of the apparatus main body accompanying the stop of the operation of the reproducing unit 11 is low is detected. As a result, the analysis unit 19 starts a music feature analysis process based on the music data D1 while the processing load on the apparatus main body is low. Incidentally, even if the analysis unit 19 is set not to automatically analyze the music characteristics based on the music data D1, after the user inputs an end command such as a media playback function via the operation unit 12, When an analysis execution command is input from the operation unit 12 by an analysis execution operation, a state in which the processing load on the apparatus main body is low is detected because the reproduction unit 11 has already stopped the operation. Thereby, the analysis unit 19 starts the analysis process of the music feature based on the music data D1 with the processing load of the apparatus main body being low even in such a case.

  When the analysis unit 19 starts the music feature analysis process based on the music data D1 in this way, first, based on the analysis flag stored in the data attribute information DAT in the data storage unit 13, the music feature has not been analyzed. The music data D1 for analysis is searched. Then, the analysis unit 19 lists information such as storage addresses (hereinafter referred to as unanalyzed music designation information) from which all the searched music data D1 can be sequentially designated and read from the data storage unit 13. (Hereinafter, this is referred to as an unanalyzed music list).

  By the way, in the reproducing apparatus 10, for example, the user can set in what order the music data D1 whose music characteristics are not analyzed from the data storage unit 13 is read and analyzed. Therefore, when the analysis unit 19 generates the unanalyzed music list in this manner, the unanalyzed music designation information in the unanalyzed music list is left in the sequence at the time of generation according to the user setting, or as the data attribute information DAT. Are stored in the order according to the data attribute information DAT such as the storage date and time, the provider of the music data D1, the artist name, and the genre name.

  Incidentally, as the order of reading all the music data D1 whose characteristic of music is not analyzed from the data storage unit 13, the order of reading all the music data D1 whose characteristic of music is unanalyzed in order from the newest storage date and time, There is an order in which all the music data D1 whose characteristics are unanalyzed are classified by the provider, artist, or genre of the music data D1, and the newest storage date is read for each classification. Further, as the order, all the music data D1 whose music characteristics are not analyzed are read in the order of the corresponding music titles in the order of the Japanese syllabary and alphabet, or all the music data D1 whose music characteristics are not analyzed. Are classified according to artist or genre, and there is an order for reading out music titles in alphabetical order or alphabetical order for each category.

  The analysis unit 19 reads the music data D1 whose music features are not analyzed from the data storage unit 13 in accordance with such an unanalyzed music list and stores it in the internal memory. Then, the analysis unit 19 reads one piece of music data D1 from the internal memory in the reading order indicated by the unanalyzed music list, analyzes the characteristics of the music, and then again receives one piece of new music data D1 from the internal memory. Music features based on one piece of music data D1 are sequentially analyzed so as to read and analyze the music features.

  However, even if the analysis unit 19 starts the analysis process of the feature of music based on the music data D1 in a state where the processing load of the apparatus main body according to the user power-off operation or the analysis execution operation is low, When the apparatus main body shifts to a power-on state or a high processing load in response to the function selection operation, the analysis process is interrupted so that the apparatus main body can cope with the user's request. Therefore, for the analysis unit 19, the upper limit of the number of music data D1 read at a time from the data storage unit 13 for analysis processing is a predetermined number such as 50 in advance (hereinafter referred to as the upper limit predetermined number). Has been selected.

  Accordingly, when the total number of music data D1 whose music features are not analyzed is equal to or less than the upper limit predetermined number, the analysis unit 19 reads all the music data D1 whose music features are not analyzed from the data storage unit 13 in one reading process. read out. On the other hand, when the total number of music data D1 whose music features are unanalyzed is greater than the upper limit predetermined number, the analysis unit 19 sets the music data D1 whose music features are not analyzed from the data storage unit 13 by the upper limit predetermined number. When the reading and the analysis of the music characteristics based on the read music data D1 are completed, the music data D1 whose music characteristics are unanalyzed from the data storage unit 13 is again returned to the upper limit predetermined number (or the remaining upper limit predetermined number). Read all out) and analyze the characteristics of the music.

  As a result, the analysis unit 19 shortens the time required to read the music data D1 from the data storage unit 13 as much as possible. As a result, the analysis unit 19 shortens the time from when the processing load of the apparatus main body is detected to when analysis of the music feature based on the music data D1 is started as much as possible. Therefore, the analysis unit 19 detects a state in which the processing load on the apparatus main body is low, and then the user performs a power-on operation or a function selection operation at a relatively fast time, so that the apparatus main body is in a power-on state or a high processing load. Even in the case where the analysis process is interrupted, the music characteristics based on as much music data D1 as possible can be analyzed.

  By the way, the analysis unit 19 actually reads out one piece of music data D1 from the internal memory, based on the frequency analysis processing for analyzing the frequency of the piece of music data D1, and the result of the frequency analysis. A feature digitizing process for digitizing music features based on the one piece of music data D1 is sequentially executed. That is, when the analysis unit 19 reads one piece of music data D1 from the internal memory, the analysis unit 19 performs frequency analysis processing on the one piece of read music data D1. Accordingly, the analysis unit 19 divides the music data D1 read from the memory into predetermined unit processing parts (for example, a part corresponding to music for one second) along the music time axis, and sequentially processes the unit processing parts. To extract the energy for each frequency band corresponding to 12 octaves of one octave.

  In this way, when the analysis unit 19 obtains energy for each frequency band over the entire music data D1, it then performs a feature digitization process based on the energy for each frequency band. As a result, the analysis unit 19 detects various information such as musical instruments, chords, and tempos that are used in the performance of music. Further, the analysis unit 19 quantifies music features for each of a plurality of types of items (hereinafter referred to as feature items) based on the detection result, and features numerical values including a plurality of feature values representing the music features. Generate information.

  Here, as shown in FIG. 12, the analysis unit 19 uses the characteristic features of music as tempo (Tempo), variation in sound (Dispersion), and the like as the characteristic digitization information SN representing the characteristic of one piece of music data D1. A plurality of feature values expressed numerically are generated for each of a plurality of types of feature items such as musical scale (Major) and rhythm (Rhythmratio). In addition, the analysis unit 19 uses a plurality of types of features such as acoustic, energy, classic, jazz, cafe terrace, etc. as the characteristic numerical information SN. A plurality of feature values expressed in numerical form for each feature item are also generated. Further, the analysis unit 19 uses the feature numerical information SN as a plurality of types of features such as happy, sad, bright, joyful, and fresh as the features of music impression. A plurality of feature values expressed numerically for each item are also generated.

  In this way, the analysis unit 19 analyzes the feature of music based on one piece of music data D1, and obtains characteristic digitization information SN representing the feature of the music as the analysis result. Then, the analysis unit 19 sends the feature digitization information SN obtained in this way to the registration unit 20 together with the storage address of the corresponding music data D1 (that is, the analysis of the music feature at this time). Incidentally, when the analysis unit 19 obtains the feature digitization information SN in this way, the analysis unit 19 stores the feature digitization information SN in a tag added to the head or tail of the corresponding music data D1.

  By the way, in the plurality of types of playlists PL described above, an artist name, a genre name, a predetermined number of music data D1 randomly selected from all the music data D1 stored in the data storage unit 13, and the like. There are a plurality of specific themes for registering the music data D1. In the plurality of playlists PL, music data D1 corresponding to a specific theme is specified and registered according to the data attribute information DAT or the like. In the above-mentioned multiple types of playlists PL, abstract themes for registering music data D1 of music having similar characteristics such as climate, place, season, mood, atmosphere, event, etc. There are several things that have been determined. In the plurality of playlists PL, music data D1 of music each having a characteristic that matches an abstract theme (or an image of an abstract theme) is specified and registered according to the characteristic of the music.

  Here, an abstract theme is determined, and for a plurality of types of playlists PL that use music characteristics for registration of music data D1, music data D1 of music having characteristics that match the abstract theme is specified. The registration conditions for registration are set. As such a plurality of playlists PL, one or a plurality of feature items for specifying the music data D1 of music each having a feature suitable for an abstract theme, and a lower limit for the feature value for each feature item A threshold value and / or an upper limit threshold value is arbitrarily selected, and in the selected feature item, music data D1 having a feature value greater than or equal to the lower threshold value, a feature value less than the upper threshold value, and a feature value greater than or equal to the lower threshold value and less than the upper threshold value There are a plurality of registration conditions that are specified and registered (hereinafter referred to as first threshold usage registration conditions).

  For this reason, as shown in FIG. 13, the table storage unit 21 of the playback apparatus 10 includes a plurality of playlists PL (hereinafter referred to as “threshold usage playlists”) in which the first threshold usage registration conditions are set. For example, a first registration condition table RET <b> 1 is stored that indicates, for example, an identifiable list name and the first threshold value use registration condition in association with each other. Accordingly, the registration unit 20 performs registration processing for registering one piece of music data D1 in the threshold-use playlist PL every time the feature digitization information SN corresponding to one piece of music data D1 is given from the analysis unit 19. (Hereinafter, this is referred to as threshold use registration processing). And when the registration part 20 performs this threshold value use registration process, based on the feature digitization information SN (that is, a plurality of feature values corresponding to a plurality of feature items) and the first registration condition table RET1, It is determined whether or not there is a threshold usage playlist PL that can register the music data D1 in the threshold usage playlist PL (that is, has a first threshold usage registration condition that the music data D1 matches). .

  As a result, when there is a specific threshold usage playlist PL that can register the music data D1 according to the music characteristics, the registration unit 20 is given to the threshold usage playlist PL by the analysis unit 19 at this time. The storage address is stored as music instruction information MID. As a result, the registration unit 20 registers the music data D1 for the specific threshold value use playlist PL corresponding to the feature of the music data D1.

  By the way, as shown in FIG. 14, among the plurality of threshold value use playlists PL, according to the setting contents of the first threshold use registration condition (that is, the selection contents of the feature item, the lower threshold value, and / or the upper threshold value). There may be a plurality of threshold value use playlists PL1 and PL2 in which the same music data D1 matches the first threshold value use registration condition of each other. The playback apparatus 10 basically permits the same music data D1 to be registered for a plurality of threshold value use playlists PL.

  However, in the playback apparatus 10, a plurality of threshold value use playlists PL1 and PL2 that are likely to be matched with a relatively large amount of the same music data D1 according to the first threshold value use registration condition of each other are displayed in an exclusive group. As a group. When the same music data D1 is matched with the first threshold usage registration conditions of the plurality of threshold usage playlists PL1 and PL2 belonging to the same exclusive group, the registration unit 20 applies to each of these threshold usage playlists PL1 and PL2. Depending on the total number of registered music data D1 already registered, the number of feature items used as the first threshold use registration condition, the lower threshold and / or the upper threshold for the feature value of the feature item, etc., some threshold values The music data D1 is registered only in the use playlist PL1 or PL2, and the music data D1 is not registered in the remaining threshold use playlist PL1 or PL2.

  As a result, the registration unit 20 uses a plurality of threshold usage playlists PL1 and PL2 (that is, in the same exclusive group) that are likely to match the same music data D1 relatively much with respect to each other's first threshold usage registration conditions. It is avoided that many pieces of the same music data D1 are registered with respect to a plurality of threshold value use playlists PL1 and PL2). Therefore, the registration unit 20 can make a different music sample and listen, regardless of which of the threshold value use playlists PL1 and PL2 belonging to the same exclusive group is used for reproducing the music data D1. Incidentally, the registration unit 20 assigns the same music data D1 that conforms to the first threshold usage registration conditions of the plurality of threshold usage playlists PL1 and PL2 belonging to the same exclusive group to any threshold usage playlist PL1 or PL2. When registering, according to the above-mentioned total number of registered music data D1, etc., it is avoided as much as possible that the total number of registered music data D1 is extremely biased with respect to the plurality of threshold value use playlists PL1 and PL2 belonging to the same exclusive group. I am doing so.

  Further, as shown in FIG. 15, among the plurality of music data D1 stored in the data storage unit 13, there are a plurality of music data D1A to D1D that indicate feature values that are relatively close to each other in a predetermined feature item. There is a case. Therefore, as shown in FIG. 16 and FIG. 17, the registration unit 20 includes a plurality of threshold value use playlists PL that do not belong to the same exclusive group (that is, threshold value use playlists of list name X and list name Y). PL), the lower limit threshold value for the feature value of a predetermined feature item is selected to a relatively high value, and the upper limit threshold value is selected to a relatively low value (that is, the matching range for the feature value is narrowed). When the first threshold usage registration condition is set relatively strict, only a part of the plurality of music data D1A indicating relatively close feature values is registered in the threshold usage playlist PL. Then, the registration unit 20 cannot register the remaining music data D1B to D1D in any threshold value use playlist PL.

  That is, in the playback device 10, when the first threshold usage registration condition is set relatively strict in each of the plurality of threshold usage playlists PL, each of the threshold usage playlists PL is in line with each abstract theme (or Music data D1 of music with similar characteristics (similar to an abstract theme image) is selected and registered as much as possible. As a result, in the playback device 10, among the plurality of music data D1 stored in the data storage unit 13, the music data D1 that is not registered in any threshold value use playlist PL increases.

  On the other hand, as shown in FIG. 18 and FIG. 19, the registration unit 20 uses a plurality of threshold usage playlists PL that do not belong to the same exclusive group (that is, threshold usage of list name X and list name Y). In the playlist PL), the lower limit threshold value for the feature value of the predetermined feature item is selected to be a relatively low value, and the upper limit threshold value is selected to be a relatively high value (ie, the matching range for the feature value is If the first threshold usage registration conditions are set to be relatively relaxed), a plurality of music data D1A to D1D indicating relatively close feature values are overlapped with the plurality of threshold usage playlists PL. May be registered. That is, in the playback device 10, when the first threshold usage registration condition is set relatively relaxed in each of the plurality of threshold usage playlists PL, each of the plurality of threshold usage playlists PL has an abstract theme. Along with music data D1 of similar music along (or close to the image of the abstract theme), music music of different characteristics not along the abstract theme (or far from the image of the abstract theme) Data D1 is also registered.

  Therefore, in the playback apparatus 10, the registration unit 20 registers various music data D1 on a trial basis in a plurality of threshold value use playlists PL, and the first corresponding to the plurality of threshold value use playlists PL according to the registration result. The setting contents of the threshold usage registration condition 1 are appropriately adjusted. As a result, as shown in FIG. 20, the registration unit 20 shows a feature value that is relatively close to a predetermined threshold value use playlist PL (that is, a threshold value use playlist PL of list name X and list name Y). A plurality of music data D1A to D1D are registered in an appropriately distributed manner. That is, the registration unit 20 uses the plurality of thresholds while suppressing as much as possible the increase in the music data D1 that is not registered in any threshold use playlist PL among the plurality of music data D1 stored in the data storage unit 13. Music data D1 of music having similar characteristics along each abstract theme (or close to the image of the abstract theme) is registered in the playlist PL.

  However, in the playback device 10, each of the first threshold usage registration conditions of the plurality of threshold usage playlists PL is set with little consideration of the first threshold usage registration conditions of the other threshold usage playlists PL. That is, in the playback device 10, the feature item to be used, its type, and the lower limit threshold and / or upper limit threshold for the feature value are arbitrarily selected according to the abstract theme for each threshold use playlist PL, and the first threshold value is selected. Usage registration conditions are set. For this reason, in the playback device 10, even if the setting contents of the first threshold usage registration conditions of the plurality of threshold usage playlists PL are appropriately adjusted as described above, all the music data D1 stored in the data storage unit 13 is stored. May not necessarily be distributed and registered in any threshold usage playlist PL, and there may be music data D1 that is not registered in any threshold usage playlist PL.

  For this reason, the music data D1 is stored in the table storage unit 21 according to the music characteristics together with the first registration condition table RET1 indicating the first threshold use registration conditions for registering the music data D1 according to the music characteristics. Therefore, a second registration condition table is also stored that shows registration conditions that are different from the first threshold use registration conditions and that are relaxed compared to the first threshold use registration conditions. When the threshold value use registration process is started, the registration unit 20 first executes a first-stage process (hereinafter referred to as a first-stage process), so that the first registration condition table RET1 as described above. Accordingly, one piece of music data D1 is registered in any threshold value use playlist PL. However, when the registration unit 20 cannot register one music data D1 in any threshold usage playlist PL in accordance with the first registration condition table RET1 in the first stage processing, it continues as part of the threshold usage registration processing. A second stage process (hereinafter referred to as a second stage process) is executed. Thereby, the registration unit 20 uses the first digitized music data D1 that could not be registered in any of the threshold value use playlists PL in the first stage process, the feature digitized information SN indicating the music characteristics, and the second registration condition table. Based on the above, it is newly registered in one of the threshold value use playlists PL.

  By the way, as the second stage processing, the following two types of methods can be considered. Therefore, in the following, the second stage processing by one method and the second stage processing by the other method will be described in order. First, when the registration unit 20 is configured to execute the second stage processing by one method, a plurality of feature values of the same type of each of a large number of music data D1 are preliminarily tested as coordinate values in a multidimensional space. Are used to perform multidimensional clustering on the large number of music data D1. As a result, the registration unit 20 generates a plurality of clusters that combine the music data D1 having similar music characteristics (that is, classify the music data D1 according to the characteristics).

  Incidentally, the registration unit 20 performs multi-dimensional clustering on the large number of music data D1 so that each large number of music data D1 always belongs to only one of the clusters. The total number of clusters is selected, for example, the same as the number of the plurality of threshold value use playlists PL or more than the number. Then, the registration unit 20 detects center coordinate values (hereinafter referred to as cluster center values) in the multidimensional space of each of the plurality of clusters.

  Further, in the playback device 10, by playing back the music data D1 belonging to the plurality of clusters and actually listening to the music, the music data D1 of music having characteristics that match the abstract theme is obtained for each threshold-use playlist PL. Select a cluster to belong to. Then, in the playback device 10, at least one cluster is included in each of the plurality of threshold value use playlists PL so that only one threshold value use playlist PL always corresponds to each of the plurality of clusters according to the selection result. It is associated.

  As a result, the playback apparatus 10 discriminates any one cluster to which the music data D1 belongs based on the music feature and cluster center value based on the new music data D1, and associates it with the discriminated cluster. A registration condition for registering the music data D1 (hereinafter, referred to as a first cluster use registration condition) is set for the threshold-use play list PL. As shown in FIG. 21, the table storage unit 21 of the playback apparatus 10 includes, as the second registration condition table, for example, a cluster number, a cluster center value, and music data belonging to a cluster that can identify each of a plurality of clusters. A cluster use registration condition table RET2 indicating the first cluster use registration condition is stored in association with the list name of the threshold use play list PL whose music features based on D1 match the abstract theme.

  In this state, when the registration unit 20 starts the second stage process subsequent to the first stage process in the threshold use registration process, the registration unit 20 could not register in any threshold use playlist PL according to the first registration condition table RET1. From the feature digitization information SN corresponding to each piece of music data D1, out of all feature values included therein, all feature values of the same type as those used in the above-described multidimensional clustering are extracted. Then, as shown in FIG. 22, the registration unit 20 uses a plurality of types of feature values extracted from the feature digitization information SN (that is, used as coordinate values in a multidimensional space) and clusters in the cluster use registration condition table RET2. Based on the center value, vector space distances L1 to L4 between one piece of music data D1 and each cluster are detected. As a result, among the vector space distances L1 to L4 between one music data D1 and each cluster, the registration unit 20 selects one cluster having the shortest vector space distance L3 with respect to the one music data D1. Determine. That is, the registration unit 20 determines one cluster to which one music data D1 belongs according to the feature of the music based on the vector space distance L3.

  Also, the registration unit 20 refers to the cluster use registration condition table RET2 based on the determination result, and one cluster to which one music data D1 belongs (that is, one cluster having the shortest vector space distance L3). ) Is detected as one threshold value use playlist PL. In this manner, the registration unit 20 detects one threshold value use playlist PL having an abstract theme that matches the music characteristics based on the music data D1 from the plurality of threshold value use playlists PL. Then, the registration unit 20 stores the storage address corresponding to one piece of music data D1 used for the second stage processing as the music instruction information MID for the detected threshold value use playlist PL. As a result, the registration unit 20 registers the music data D1 with respect to the specific threshold value use playlist PL corresponding to the music characteristics based on the single music data D1.

  In this way, when the second stage process is performed by one method, the registration unit 20 associates at least one cluster with each of the plurality of threshold usage playlists PL, and the plurality of threshold usage plays. One cluster to which one music data D1 belongs (that is, classify music data D1 of music having similar characteristics) is determined from among a plurality of clusters associated with the list PL. Accordingly, when the registration unit 20 cannot register one piece of music data D1 in any threshold-use playlist PL in the first stage process, the one piece of music data D1 belongs to one piece of music data D1. Can be reliably registered in any one of the threshold value use playlists PL corresponding to the characteristics of the music.

  In practice, when the registration unit 20 is configured to perform the second stage processing by one method, when the feature digitization information SN corresponding to one piece of music data D1 is given from the analysis unit 19, The first two-stage registration processing procedure RT8 shown in FIG. 23 is started. Then, when starting the first two-stage registration processing procedure RT8, the registration unit 20 starts the first stage processing in step SP81, and based on the feature digitization information SN and the first registration condition table RET1, In the registration condition table RET1, it is determined whether or not there is a first threshold usage registration condition that matches the characteristics of music based on one piece of music data D1.

  If an affirmative result is obtained in this step SP81, this means that one music data D1 can be registered in at least one threshold value use playlist PL according to the music characteristics in accordance with the first registration condition table RET1. ing. Accordingly, when the registration unit 20 obtains such a positive result, the registration unit 20 proceeds to next step SP82. In step SP82, the registration unit 20 registers one piece of music data D1 in the threshold value use playlist PL that matches the music characteristics, and proceeds to the next step SP83.

  By the way, if a negative result is obtained in step SP81 described above, this means that one music data D1 is transferred to any threshold usage playlist PL in the first threshold usage registration condition in the first registration condition table RET1. Indicates that registration is not possible. Accordingly, when the registration unit 20 obtains such a negative result, the registration unit 20 proceeds to step SP83. In step SP83, the registration unit 20 determines whether or not to execute the second stage process. If an affirmative result is obtained in step SP83, this indicates that one piece of music data D1 could not be registered in any threshold use playlist PL in the first stage process. Accordingly, when the registration unit 20 obtains such a positive result, the registration unit 20 proceeds to step SP84.

  In step SP84, the registration unit 20 starts the second stage process subsequent to the first stage process, and stores one piece based on the feature digitization information SN and the cluster use registration condition table RET2 as the second registration condition table. One cluster to which the music data D1 belongs is discriminated according to the characteristics of the music, and the process proceeds to the next step SP85. In step SP85, the registration unit 20 refers to the cluster usage registration condition table RET2, detects the threshold usage playlist PL associated with the determined cluster, and proceeds to the next step SP86.

  In step SP86, the registration unit 20 registers one piece of music data D1 in the detected threshold value use playlist PL, and then proceeds to the next step SP87 to end the first two-stage registration processing procedure RT8. By the way, if a negative result is obtained in step SP83 described above, this means that one music data D1 can be registered in any one of the threshold value use playlists PL according to the first registration condition table RET1 in the first stage process. Represents. Accordingly, when the registration unit 20 obtains such a negative result, the registration unit 20 proceeds to step SP87 without starting the second-stage process, and ends the first two-stage registration process procedure RT8.

  Next, a case where the registration unit 20 is configured to execute the second stage process by the other method will be described. In this case, the playback device 10 additionally sets, for example, two types of second and third threshold usage registration conditions in which only the threshold value of the first threshold usage registration condition described above is changed for each threshold usage playlist PL. ing.

  The second threshold usage registration condition for each threshold usage playlist PL is changed so that at least one part of the lower threshold is smaller than the corresponding first threshold usage registration condition, and / or at least part of the upper threshold Has been changed to a larger value, and the range of adaptation of feature values has been expanded. That is, the second threshold usage registration condition for each threshold usage playlist PL is relaxed compared to the corresponding first threshold usage registration condition.

  In addition, the third threshold usage registration condition for each threshold usage playlist PL is changed so that at least one part of the lower threshold is smaller than the corresponding second threshold usage registration condition, and / or at least one of the upper thresholds. The part is changed to a larger value, and the matching range of the feature value is further expanded. That is, the third threshold usage registration condition for each threshold usage playlist PL is relaxed compared to the corresponding second threshold usage registration condition. Note that the third threshold usage registration condition is that any music data D1 that could not be registered in any threshold usage playlist PL in accordance with the first threshold usage registration condition is eventually selected according to the characteristics of the music. The setting content (that is, the lower limit threshold and / or the upper limit threshold) is appropriately selected so that it can be registered almost certainly in the threshold value use playlist PL.

  As shown in FIGS. 24A and 24B, the table storage unit 21 stores the first registration condition table for each threshold value use playlist PL indicated by the above-described first registration condition table RET1. The first and second threshold usage registration condition tables RET3 configured in the same manner as the first registration condition table RET1 except that the threshold usage registration conditions are changed to the second and third threshold usage registration conditions. RET4 is stored.

  In this state, when the registration unit 20 starts the second stage process subsequent to the first stage process in the threshold use registration process, the registration unit 20 cannot first register in any threshold use playlist PL according to the first registration condition table RET1. Based on the characteristic digitization information SN corresponding to one piece of music data D1 and the first threshold value use registration condition table RET3, the music data D1 can be registered in a plurality of threshold value use playlists PL (that is, It is determined whether or not there is a threshold usage playlist PL (having a second threshold usage registration condition to which the music data D1 matches).

  As a result, when there is a specific threshold value use playlist PL that can register one piece of music data D1 according to the music characteristics, the registration unit 20 performs a second step process on the threshold value use playlist PL at this time. The storage address corresponding to the music data D1 used for is stored as music instruction information MID. As a result, the registration unit 20 registers the music data D1 for the specific threshold value use playlist PL corresponding to the feature of the music data D1.

  On the other hand, when the registration unit 20 cannot detect the threshold use playlist PL that can register one piece of music data D1 even using the first threshold use registration condition table RET3, the registration unit 20 continues to use the one threshold use registration condition table RET3. Based on the feature digitization information SN corresponding to the music data D1 and the second threshold usage registration condition table RET4, the music data D1 can be registered in the plurality of threshold usage playlists PL (ie, the music data D1 Threshold value use playlist PL (having a third threshold value use registration condition to which is applicable) is determined.

  Then, the registration unit 20 stores, as the music instruction information MID, the storage address corresponding to one piece of music data D1 used for the second stage process at this time for the determined threshold value use playlist PL. As a result, the registration unit 20 registers the music data D1 for the specific threshold value use playlist PL corresponding to the feature of the music data D1. In this way, the registration unit 20 sequentially uses the second and third threshold usage registration conditions that gradually relax the first threshold usage registration conditions even when the second stage processing is performed by the other method. Thus, one piece of music data D1 that cannot be registered in any threshold-use playlist PL in the first stage process can be almost certainly registered in any threshold-use playlist PL.

  In addition, when the registration unit 20 is configured to execute the other second-stage process, the registration unit 20 sequentially uses the second and third threshold usage registration conditions that gradually relax the first threshold usage registration conditions. Thus, one piece of music data D1 that cannot be registered in any threshold-use playlist PL in the first stage process can be registered in the threshold-use playlist PL of an abstract theme that matches the characteristics of the music as much as possible. . Therefore, the registration unit 20 avoids registering music data D1 of music having different characteristics with respect to the threshold use playlist PL as much as possible even if the second stage process is executed.

  In practice, when the registration unit 20 is configured to execute the second stage process by the other method, when the feature digitization information SN corresponding to one piece of music data D1 is given from the analysis unit 19, The second two-stage registration processing procedure RT9 shown in FIG. 25 is started. Then, when starting the second two-stage registration processing procedure RT9, the registration unit 20 starts the first stage processing in step SP91, and based on the feature digitization information SN and the first registration condition table RET1, In the registration condition table RET1, it is determined whether or not there is a first threshold usage registration condition that matches the characteristics of music based on one piece of music data D1.

  If an affirmative result is obtained in this step SP91, this means that one music data D1 can be registered in at least one threshold use playlist PL according to the music characteristics in accordance with the first registration condition table RET1. ing. Therefore, when the registration unit 20 obtains such a positive result, the registration unit 20 proceeds to next step SP92. In step SP92, the registration unit 20 registers one piece of music data D1 in the threshold value use playlist PL that matches the music characteristics, and proceeds to the next step SP93.

  By the way, if a negative result is obtained in step SP91 described above, this means that one music data D1 is transferred to any threshold usage playlist PL in the first threshold usage registration condition in the first registration condition table RET1. Indicates that registration is not possible. Accordingly, when the registration unit 20 obtains such a negative result, the registration unit 20 proceeds to step SP93. In step SP93, the registration unit 20 determines whether or not to execute the second stage process. If an affirmative result is obtained in step SP93, this indicates that one piece of music data D1 could not be registered in any threshold use playlist PL in the first stage process. Accordingly, when the registration unit 20 obtains such a positive result, the registration unit 20 proceeds to step SP94.

  In step SP94, the registration unit 20 starts the second stage process following the first stage process, and based on the feature digitization information SN and the first threshold use registration condition table RET3 as the second registration condition table, It is determined whether or not there is a second threshold usage registration condition that matches the characteristics of music based on one piece of music data D1 in the first threshold usage registration condition table RET3. If a positive result is obtained in this step SP94, this means that one music data D1 can be registered in at least one threshold usage playlist PL according to the music characteristics in accordance with the first threshold usage registration condition table RET3. Represents. Accordingly, when the registration unit 20 obtains such a positive result, the registration unit 20 proceeds to next step SP95. In step SP95, the registration unit 20 registers one piece of music data D1 in the threshold value use playlist PL that matches the characteristics of the music, and then moves to the next step SP96 to execute the second two-stage registration processing procedure RT9. finish.

  On the other hand, if a negative result is obtained in step SP94, this means that in the second threshold usage registration condition in the first threshold usage registration condition table RET3, one music data D1 is stored in any threshold usage playlist PL. This means that you cannot register. Accordingly, when the registration unit 20 obtains such a negative result, the registration unit 20 proceeds to step SP97. In step SP97, the registration unit 20 performs one piece of music data in the second threshold usage registration condition table RET4 based on the feature digitization information SN and the second threshold usage registration condition table RET4 as the second registration condition table. The third threshold usage registration condition that matches the music feature based on D1 is determined, and the process proceeds to the next step SP98. In step SP98, the registration unit 20 registers one piece of music data D1 in the threshold value use playlist PL corresponding to the third threshold value use registration condition with which the music features are matched, and then proceeds to the next step SP96. The second two-stage registration processing procedure RT9 is terminated.

  By the way, if a negative result is obtained in step SP93 described above, this means that one piece of music data D1 can be registered in any threshold-use playlist PL in accordance with the first registration condition table RET1 in the first stage process. Represents. Therefore, when the registration unit 20 obtains such a negative result, the registration unit 20 does not start the second-stage process, moves to step SP96, and ends the second two-stage registration process procedure RT9.

  In this way, as shown in FIG. 26, when the registration unit 20 starts the threshold value use registration process when the analysis unit 19 receives the feature digitization information SN of one piece of music data D1, the first stage process is performed. Execute. As a result, the registration unit 20 registers one piece of music data D1 in any one of the threshold value use playlists PL based on the feature digitization information SN and the first registration condition table RET1. When the music data D1 can be registered in any of the threshold value use playlists PL, the threshold value use registration process is terminated together with the first stage process.

  On the other hand, if the registration unit 20 cannot register one piece of music data D1 in any of the threshold value use playlists PL in the first step process, the registration unit 20 executes the second step process. As a result, the registration unit 20 converts one piece of music data D1 into the feature digitized information SN and the second registration condition table (that is, the cluster use registration condition table RET2, or the first and second threshold use registration condition tables RET3 and RET4). ) And the threshold value use registration process is completed together with the second stage process. That is, as shown in FIG. 27, for example, the registration unit 20 continues to execute the second stage process for one piece of music data D1 that could not be registered in any threshold usage playlist PL in the first stage process. Thus, finally, it is possible to almost certainly register with any threshold value use playlist PL according to the feature of music.

  By the way, in the playback apparatus 10, an abstract theme is determined, and not only the threshold-use playlist PL described above but also a registration condition using a cluster as a plurality of types of playlists PL that use the characteristics of music for registration of the music data D1. A predetermined number of playlists PL (hereinafter referred to as “cluster use playlist”) PL are also prepared. In this case, the registration unit 20 uses a plurality of clusters generated by the above-described experimental multidimensional clustering, and music data D1 of music having characteristics that match the abstract theme for each cluster use playlist PL. Select the cluster to which the belongs. Incidentally, the total number of clusters is selected more than the number of the cluster use playlists PL, for example. In the playback device 10, at least one cluster is included in each of the predetermined number of cluster-use playlists PL so that only one of the cluster-use playlists PL always corresponds to each of the plurality of clusters according to the selection result. It is associated.

  As a result, the playback apparatus 10 discriminates any one cluster to which the music data D1 belongs based on the music feature and cluster center value based on the new music data D1, and associates it with the discriminated one cluster. A registration condition for registering the music data D1 (hereinafter referred to as a second cluster use registration condition) is set for the cluster use play list PL that has been set. As shown in FIG. 28, in the table storage unit 21, for example, a cluster number that can identify each of a plurality of clusters, a cluster center value, and music features based on music data D1 belonging to the cluster are abstract themes. A third registration condition table RET10 indicating the second cluster use registration condition is stored in association with the list name of the matching cluster use playlist PL.

  In this state, the registration unit 20 sends the music data D1 to the cluster use playlist PL together with the threshold use registration process described above every time the analysis unit 19 provides the feature digitization information SN corresponding to one piece of music data D1. A registration process (referred to as cluster use registration process) is also executed. When the registration unit 20 executes the cluster use registration process, basically, from the feature digitized information SN corresponding to one piece of music data D1, all of the included contents are included, as in the second stage process described above. Of the feature values, all feature values of the same type as those used in the multidimensional clustering described above are extracted. The registration unit 20 also uses a plurality of types of feature values extracted from the feature digitization information SN (that is, used as coordinate values in the multidimensional space) and the cluster center value in the third registration condition table RET10. A vector space distance between the music data D1 and each cluster is detected. As a result, the registration unit 20 determines the cluster having the shortest vector space distance to the music data D1 among the vector space distances between the music data D1 and individual clusters. That is, the registration unit 20 determines one cluster to which the music data D1 belongs according to the feature of the music based on the vector space distance.

  Further, the registration unit 20 refers to the third registration condition table RET10 based on the determination result, and associates it with one cluster to which one music data D1 belongs (that is, the shortest vector space distance). The cluster use playlist PL being detected is detected. In this way, the registration unit 20 detects one cluster-use playlist PL of an abstract theme that best matches the music characteristics based on the music data D1 from the plurality of cluster-use playlists PL. Then, the registration unit 20 stores the storage address given from the analysis unit 19 at this time as the music instruction information MID for the detected cluster use playlist PL. As a result, the registration unit 20 registers the music data D1 with respect to a specific cluster-use playlist PL corresponding to the music characteristics based on the music data D1. In this way, when the registration unit 20 executes the cluster use registration process, the music data D1 whose music features are analyzed by the analysis unit 19 is surely stored in any one of the predetermined number of cluster use playlists PL. To be able to register.

  Incidentally, the registration unit 20 executes threshold usage registration processing and cluster usage registration processing for one piece of music data D1 each time the digitizing information SN corresponding to one piece of music data D1 is given from the analysis unit 19. . The registration unit 20 notifies the analysis unit 19 of the end of the threshold use registration process and the cluster use registration process every time the threshold use registration process and the cluster use registration process for one piece of music data D1 are finished. Thus, when the registration unit 20 notifies the end of the threshold use registration process and the cluster use registration process, the analysis unit 19 stores the playlist PL in the playlist PL through the threshold use registration process and the cluster use registration process on the data storage unit 13. The setting contents of the analysis flag corresponding to the registered music data D1 (that is, indicating unanalyzed) are changed to indicate analyzed. Accordingly, when the analysis unit 19 starts the analysis process again thereafter, the analysis unit 19 accurately determines the music data D1 for which the analysis of the music features has already been completed based on the setting contents of the analysis flag, and the music based on the music data D1. This avoids wasteful analysis of the characteristics of.

  Incidentally, the analysis unit 19 interrupts the analysis of the music feature based on the music data D1 when the music feature D1 cannot be analyzed because the music data D1 to be analyzed is damaged. (In other words, the frequency analysis process and the feature digitization process are interrupted). Then, the analysis unit 19 changes the setting contents of the analysis flag corresponding to the music data D1 for which the analysis of the music characteristics is interrupted (that is, indicates unanalyzed) on the data storage unit 13 so as to indicate an analysis failure. . As a result, when the analysis unit 19 starts the analysis process again thereafter, the analysis unit 19 accurately determines the music data D1 that could not normally analyze the music characteristics based on the setting contents of the analysis flag, and based on the music data D1. It avoids trying to analyze the characteristics of music again.

  In this way, the analysis unit 19 analyzes the features of the music in cooperation with the registration unit 20 as described above while sequentially analyzing the features of the music based on the music data D1 stored in the data storage unit 13. A threshold usage registration process and a cluster usage registration process for the music data D1 are executed. As a result, the analysis of the music features based on all the music data D1 stored in the data storage unit 13 is completed, and when the threshold value use registration process and the cluster use registration process by the registration unit 20 are also finished, the analysis process is finished. To do. Then, when the analysis processing that has been executed in the standby state of the apparatus main body is completed, the analysis unit 19 shifts the apparatus main body to the power-off state. In addition, when the analysis processing that has been executed in a state where the processing load of the apparatus main body is low even when the power is on is completed, the analysis unit 19 terminates the analysis processing to the user via the display processing unit 17 and the display unit 18 in order, for example. And the apparatus main body is made to wait for a user operation with a low processing load.

  Incidentally, the analysis unit 19 periodically monitors whether the entire apparatus main body (including itself and the registration unit 20) is operating normally during the execution of the analysis process. Then, when an operation abnormality occurs in the apparatus main body during the execution of the analysis process, the analysis unit 19 executes a fail-safe function that temporarily stops the analysis process and restarts the apparatus main body. Accordingly, the analysis unit 19 erroneously analyzes the music characteristics based on the music data D1 due to, for example, the analysis processing of the music data D1, the threshold usage registration processing and the cluster usage registration processing performed by the registration unit 20, and the registration unit 20 Thus, it is avoided that the music data D1 is mistakenly registered in the playlist PL.

  Incidentally, if the analysis processing 19 interrupts the analysis of the music feature based on the music data D1 when the analysis processing is interrupted, the analysis unit 19 sets the analysis flag corresponding to the music data D1 for which the analysis of the music feature is interrupted. Do not change anything in content (ie, indicate unparsed). Thus, when the analysis of the music feature based on the music data D1 is interrupted due to an abnormal operation of the apparatus main body, the analysis unit 19 restarts the apparatus main body and restarts the analysis process. According to the set contents, the music feature based on the music data D1 whose analysis has been interrupted can be analyzed again.

  Here, in practice, the data storage unit 13 of the playback apparatus 10 has a control module that controls the entire apparatus main body as middleware, and an analysis for performing analysis of music characteristics for the music data D1 and registration in the playlist PL. A module and a management module including, for example, a database management system (DBMS: Database Management System) for managing various data and various information stored in the data storage unit 13 are stored in advance. Then, the analysis unit 19 and the registration unit 20 analyze the music characteristics based on the music data D1 as described above according to the control module, the analysis module, and the management module, and the music data D1 of the music analyzed based on the characteristics is displayed in the playlist. An analysis registration process to register with the PL is executed.

  Therefore, the analysis registration processing procedure RT10 executed by the analysis unit 19 and the registration unit 20 in accordance with the control module 100, the analysis module 101, and the management module 102 will be described below with reference to FIG. However, the analysis registration processing procedure RT10 will be described assuming that the control module 100, the analysis module 101, and the management module 102 are hardware circuit blocks for convenience.

  In this case, when the control module 100 detects that the processing load on the apparatus main body is low, the control module 100 starts the analysis registration processing procedure RT10. Then, when starting the analysis registration processing procedure RT10, the control module 100 requests the analysis module 101 to start analysis for music features based on the music data D1 in step SP101. Accordingly, in step SP102, the analysis module 101 starts analysis of music features based on the music data D1 in response to a request from the control module 100, and responds to the control module 100 that analysis of music features has started. Then, the process proceeds to the next step SP103.

  In step SP103, the analysis module 101 requests the management module 102 to search the music data D1 whose music characteristics are not analyzed from all the music data D1 stored in the data storage unit 13. Accordingly, in step SP104, the management module 102 searches for music data D1 whose music features are not analyzed based on the analysis flag stored in the data storage unit 13 in response to a request from the analysis module 101. Further, the management module 102 generates an unanalyzed music list according to the search result for the music data D1 whose music features are not analyzed, and provides this to the analysis module 101.

  Accordingly, in step SP105, the analysis module 101 requests the management module 102 for a plurality of music data D1 whose music characteristics are not analyzed, according to the unanalyzed music list acquired from the management module 102. As a result, the analysis module 101 acquires a plurality of music data D1 read from the data storage unit 13 by the management module 102, and proceeds to the next step SP106. In step SP106, the analysis module 101 obtains the feature digitization information SN by analyzing the feature of music based on one piece of music data D1, and proceeds to the next step SP107. Then, in step SP107, the analysis module 101, based on the feature digitization information SN and the first to third registration condition tables RET1 and RET10, plays a playlist PL that can register the music data D1 according to the music features (that is, the playlist PL). , Both threshold use playlist PL and cluster use playlist PL), and notifies the management module 102 of the discrimination results.

  Thereby, in step SP108, the management module 102, in response to the notification from the analysis module 101, converts the music data D1 into the playlist PL (that is, both the threshold use playlist PL and the cluster use playlist PL) on the data storage unit 13. Register with. When the registration ends, the management module 102 notifies the analysis module 101 of the end of the registration. Therefore, in step SP109, the analysis module 101 requests the management module 102 to change the setting contents of the analysis flag corresponding to the music data D1 for which the analysis of the music characteristics and the registration to the playlist PL have been completed. Therefore, in step SP110, in response to a request from the analysis module 101, the management module 102 analyzes on the data storage unit 13 the analysis of the music features and the analysis corresponding to the music data D1 that has been registered in the playlist PL at this time. Change the flag settings from unanalyzed to analyzed.

  By the way, when the setting content of the analysis flag is changed, in step SP111, the analysis module 101 has completed the analysis of the music characteristics for all the plurality of music data D1 acquired from the management module 102 in the above-described step SP105 by one request. Determine whether or not. If a negative result is obtained in step SP111, this indicates that some of the music data D1 acquired from the management module 102 has not yet been analyzed for the characteristics of the music. Therefore, if the analysis module 101 obtains such a negative result, the analysis module 101 returns to step SP106 and again analyzes the music features based on one piece of music data D1. In this way, the analysis module 101 analyzes the music characteristics of all of the plurality of music data D1 acquired from the management module 102 with a single request, and until the registration to the playlist PL is completed, the analysis module 101 performs step SP106 together with the management module 102. Thru | or the process of step SP111 is repeatedly performed repeatedly.

  If an affirmative result is obtained in step SP111, this means that the analysis of the music features for all the plurality of music data D1 acquired from the management module 102 with a single request is completed, and the registration to the playlist PL is also completed. Represents that. Therefore, when the analysis module 101 obtains such a positive result, the analysis module 101 proceeds to next step SP112. In step SP112, the analysis module 101 determines whether or not all music data D1 whose music characteristics have not been analyzed has been acquired from the management module 102. If a negative result is obtained in this step SP112, this means that a plurality of music data D1 whose music characteristics are unanalyzed is divided and acquired from the management module 102, and music characteristics whose music characteristics are still unanalyzed. This means that the acquisition of all D1 has not been completed. Accordingly, when the analysis module 101 obtains such a negative result, the analysis module 101 returns to step SP105, and again requests the management module 102 for a plurality of music data D1 whose music features are not analyzed. In this way, the analysis module 101 acquires all the music data D1 whose music characteristics are not analyzed from the management module 102 according to the unanalyzed music list, analyzes the music characteristics, and completes the registration to the playlist PL. The processing of step SP105 to step SP112 is performed cyclically and repeatedly together with the management module 102.

  If an affirmative result is obtained in step SP112, this means that all music data D1 with unanalyzed music characteristics is acquired from the management module 102 according to the unanalyzed music list, and music characteristics for all the music data D1 are acquired. This indicates that the analysis and registration to the playlist PL have ended. Accordingly, when the analysis module 101 obtains such a positive result, the analysis module 101 proceeds to next step SP113. In step SP113, the analysis module 101 notifies the control module 100 that the analysis of the music characteristics for the music data D1 and the registration to the playlist PL have all been completed. As a result, in step SP114, the control module 100 turns off the apparatus main body in the standby state at this time in response to the notification from the analysis module 101. At this time, if the playback unit 11 is in an idle state, the control module 100 notifies the user of the end of analysis of the music data D1. The control module 100 ends the analysis registration processing procedure RT10 together with the analysis module 101 and the management module 102.

  Incidentally, the control module 100 functions normally with respect to the analysis module 101 periodically while the processing from step SP103 to step SP113 of the analysis registration processing procedure RT10 is executed (that is, processing in the range indicated by the broken line in FIG. 29). A normal function response request is made to inquire whether or not it is in progress. Whenever the normal function response request is given from the control module 100, the analysis module 101 returns a normal function confirmation response if the self or the management module 102 is functioning normally. In this way, the control module 100 periodically monitors whether the entire apparatus main body (including the analysis unit 19 and the registration unit 20) is operating normally.

  In the case of the first embodiment, each of the plurality of threshold value use playlists PL described above is assigned to one channel. For this reason, the playback apparatus 10 can also select these threshold value use playlists PL by allowing the user to select a channel.

  Further, the cluster use playlist PL described above is of five types with the theme of time zones such as morning, noon, evening, night, and midnight. For this reason, the registration unit 20 registers the music data D1 that gives an image of the morning time zone for a cluster use playlist (hereinafter referred to as a morning playlist) with the morning time zone as a theme. . In addition, the registration unit 20 registers music data D1 that gives an image of the daytime period for a cluster use playlist (hereinafter referred to as a daytime play list) PL with the theme of the daytime period. Furthermore, the registration unit 20 registers music data D1 that makes an image of the evening time zone appear in a cluster-use playlist (hereinafter referred to as an evening playlist) PL with the theme of the evening time zone. Furthermore, the registration unit 20 registers music data D1 that makes the night time zone image for a cluster use playlist (hereinafter referred to as a night play list) PL with the theme of the night time zone. Furthermore, the registration unit 20 registers the music data D1 that gives an image of the midnight time zone to a cluster-use playlist (hereinafter referred to as a midnight playlist) with the theme of the midnight time zone. .

  The playback apparatus 10 classifies morning, noon, evening, night, and midnight with respect to the morning playlist PL, the day playlist PL, the evening playlist PL, the night playlist PL, and the midnight playlist PL. Time zone (for example, from 5:00 to 10:59:59 in the morning, from 11:00 to 15:59:59 in the morning, from 16:00 to 18:59:59 in the evening, and from 19:00 to 20 at night Time zone information indicating each time zone is associated with time 59:59, midnight is a time zone from 21:00 to 4:59:59, and these are hereinafter referred to as classification time zones). Further, the playback apparatus 10 can store these five types of morning playlists PL, daytime playlists PL, evening playlists PL, night playlists PL, and late night playlists PL in one channel (hereinafter referred to as time). (Referred to as a band channel). In this state, when the user selects a time zone channel when executing the list-based playback function, the playback unit 11 detects a classification time zone including the time at that time, and corresponds to the detected classification time zone. One morning play list PL, day play list PL, evening play list PL, night play list PL or late-night play list PL is assigned to a time zone channel. As a result, the playback unit 11 receives the music data D1 according to one morning playlist PL, noon playlist PL, evening playlist PL, evening playlist PL, or late-night playlist PL assigned to the time zone channel. Play, thus letting the user audition or listen to music.

  By the way, while the time zone channel is selected by the user, the playback unit 11 has one morning playlist PL, day playlist PL, evening playlist PL, and night playlist assigned to the time zone channel. Each time reproduction of the music data D1 is started in accordance with the PL or the midnight playlist PL, the current time and the classification time zone including the current time are detected. Then, the playback unit 11 performs the morning playlist PL, the day playlist PL, the evening playlist PL, and the night for the time zone channel, as long as the detected classification time zone does not change every time playback of the music data D1 is started. The play list PL or the late-night play list PL is used for reproduction of the music data D1 as it is without changing the assignment.

  In addition, when the classification time zone to be detected changes every time reproduction of the music data D1 is started, the playback unit 11 has the morning playlist PL, the daytime playlist PL, and the evening time assigned to the time zone channel until that time. Instead of playlist PL, night playlist PL, or late night playlist PL, one morning playlist PL corresponding to the changed classification time zone, noon playlist PL, evening playlist PL, night A playlist PL or a late-night playlist PL is allocated. Accordingly, the playback unit 11 performs music according to one morning playlist PL, day playlist PL, evening playlist PL, evening playlist PL, or late-night playlist PL newly assigned to the time zone channel. Data D1 is reproduced, thus allowing the user to listen to or listen to music.

  In this way, the playback unit 11 switches to the time zone channel according to the classification time zone at the time of starting playback of the music data D1 while the time zone channel is selected during the execution of the list-based playback function. On the other hand, any one of the morning play list PL1, the day play list PL1, the evening play list PL1, the night play list PL1, and the late night play list PL1 is appropriately switched and assigned. Then, the registration unit 20 selects the music data D1 whose characteristics are analyzed by the analysis unit 19 among all the music data D1 stored in the data storage unit 13 as described above, the morning playlist PL, and the daytime play. It is always registered in one of the list PL, the evening playlist PL, the night playlist PL, and the midnight playlist PL. Therefore, in the playback device 10, for example, when a time zone channel is selected all day long, the morning playlist PL, the day playlist PL, the evening playlist PL, and the night playlist are changed according to the change of the classification time zone. By automatically switching the PL and the late-night playlist PL sequentially and using them for reproduction of the music data D1, music based on all the music data D1 whose characteristics have been analyzed by the analysis unit 19 can be auditioned or listened to. .

  In the case of the first embodiment, the analysis unit 19 includes a frequency analysis circuit that executes frequency analysis processing and a feature digitization circuit that executes feature digitization processing. Then, the analysis unit 19 reads one piece of music data D1 from the internal memory, performs frequency analysis processing on the music data D1 by the frequency analysis circuit, and then performs the one piece of music data D1 by the feature digitizing circuit. A feature digitization process is executed for. However, the analysis unit 19 newly reads out one piece of music data D1 from the memory and executes the new piece of music data D1 from the memory while the feature digitizing process is performed on one piece of music data D1. A frequency analysis process is performed on one piece of music data D1. In this way, the analysis unit 19 operates the frequency analysis circuit and the feature digitizing circuit simultaneously in parallel during the execution of the analysis process, so that the feature of the music with respect to the music data D1 whose music feature is unanalyzed is determined. The analysis is executed efficiently.

  Furthermore, in the case of the first embodiment, the playback device 10 is powered on by, for example, lighting a blue illumination lamp provided on the front of the device housing while the device main body is in the power-on state. It is possible to notify that it is on. In addition, the playback device 10 causes the music data to be transmitted to the user by blinking the blue illumination lamp relatively slowly while the device main body shifts to the standby state and the characteristics of the music based on the music data D1 are analyzed. It can be notified that the feature of music based on D1 is being analyzed. Then, after the analysis of the music characteristics based on all the music data D1 whose characteristics have not been analyzed in the standby state is completed and the playback apparatus 10 shifts to the power-off state, the playback device 10 turns off the blue illumination lamp to the user. On the other hand, it can be notified that the apparatus main body is in a power-off state.

(1-3) Operation and Effect In the above configuration, the playback device 10 stores a plurality of threshold value use playlists PL in the list storage unit 16. In addition, the playback apparatus 10 includes first and second registration condition tables indicating different registration conditions for registering the music data D1 in the table storage unit 21 in any one of the threshold value use playlists PL in accordance with the music characteristics. RET1 is stored. Further, the playback device 10 stores the music data D1 read from the media and the music data D1 downloaded from the external device 15 in the data storage unit 13.

  Then, when the threshold value use registration process is started, the playback device 10 uses the music data D1 stored in the data storage unit 13 in the first stage process based on the music characteristics and the first registration condition table RET1 as a plurality of threshold values. It is made to register in use playlist PL. As a result, when the playback apparatus 10 can register the music data D1 in any of the threshold value use playlists PL according to the music characteristics, the playback device 10 ends the threshold value use registration process together with the first stage process. In contrast, when the playback apparatus 10 cannot register the music data D1 in any threshold-use playlist PL in the first stage process, the playback apparatus 10 continues to store the music data D1 in the second stage process as a feature of music. Is registered in any one of the threshold value use playlists PL according to the characteristics of the music, and the threshold value use registration process is terminated together with the second stage process.

  Therefore, the playback device 10 can register the music data D1 in any threshold usage playlist PL based on the music characteristics and the first registration condition table RET1 in the first stage processing of the threshold usage registration processing. Using the second registration condition table having different registration conditions from the first registration condition table RET1 together with the music characteristics, the music data D1 is matched to the music characteristics of the plurality of threshold value use playlists PL. It can be almost certainly registered in any threshold value use playlist PL.

  According to the above configuration, the playback device 10 stores a plurality of types of threshold-use playlists PL that can register the music data D1 in the list storage unit 16 and stores the music data D1 in the table storage unit 21 for music. First and second registration condition tables RET1 indicating different registration conditions for registering in any one of the threshold value use playlists PL according to the characteristics are stored. Then, the playback device 10 causes the registration unit 20 to register the music data D1 in any threshold usage playlist PL based on the music characteristics and the first registration condition table RET1. If it cannot be registered in any threshold usage playlist PL according to the first registration condition table RET1, the music data D1 is stored in any threshold usage playlist PL based on the music characteristics and the second registration condition table. I tried to register. Thus, even when the playback apparatus 10 cannot register the music data D1 in the threshold value use playlist PL based on the music characteristics and the first registration condition table RET1, the music characteristics and the second registration condition table are stored. Based on the above, the music data D1 can be almost certainly registered in any threshold value use playlist PL. Therefore, the playback apparatus 10 can classify the music data D1 almost accurately according to the music characteristics by registering the music data D1 in the threshold value use playlist PL according to the music characteristics.

  Further, when the registration unit 20 is configured to execute one of the second stage processes, the playback device 10 has a plurality of threshold value use playlists PL as the second registration condition table for the table storage unit 21, respectively. A cluster use registration condition table RET2 indicating a first cluster use registration condition using the associated cluster is stored. Therefore, when the registration unit 20 performs the second stage process in the threshold usage registration process with such a configuration, the playback device 10 has the music data based on the music characteristics based on the music data D1 and the cluster usage registration condition table RET2. D1 belongs to a cluster, and the music data D1 is stored in the music feature D1 by a simple process such as registering the music data D1 in any threshold value use playlist PL associated with the determined cluster. Can be surely registered in the threshold value use play list PL corresponding to.

  Further, when the registration unit 20 is configured to execute the other second-stage process, the playback device 10 shows the first registration condition table RET1 as a second registration condition table for the table storage unit 21. First and second threshold usage registration conditions indicating two types of second and third threshold usage registration conditions in which the threshold value of the first threshold usage registration condition is changed little by little and the matching range for the feature value is gradually expanded. Tables RET3 and RET4 are stored. Then, when the registration unit 20 performs the second stage process in the threshold usage registration process with such a configuration, the playback device 10 has a characteristic of music based on the music data D1 and a feature value compared to the first threshold usage registration condition. Using the first and second threshold usage registration condition tables RET3 and RET4 indicating the second and third threshold usage registration conditions, which gradually expand the matching range, the music data D1 according to the characteristics of the music It was made to register in the threshold value use playlist PL. Therefore, the playback apparatus 10 uses the threshold value for registering the music data D1 of other music that is similar to the music characteristics as much as possible to the music data D1 that could not be registered in any threshold-use playlist PL in the first stage process. It can be almost certainly registered in the use playlist PL.

  Further, when the playback device 10 detects a state where the processing load on the device main body is low, the playback device 10 analyzes the music characteristics based on the music data D1, and registers the music data D1 in the playlist PL based on the analyzed music features. Thus, when the music data D1 is reproduced, it is possible to avoid the processing load from becoming extremely high due to the analysis processing of the music characteristics for the music data D1, the threshold usage registration processing to the playlist PL, and the cluster usage registration processing. Can do. Therefore, the reproducing apparatus 10 can operate stably when reproducing the music data D1.

  Actually, the playback apparatus 10 is in an idle state when the processing load of the playback unit 11 is less than a certain level when the state of the processing load of the playback apparatus 11 is detected because the apparatus body is turned off and the standby state is entered. When it is detected that the processing load of the apparatus main body is low due to the transition to the standby state without any operation performed by the user for a certain period of time, the analysis of the music characteristics based on the music data D1 is started, and the music characteristics The music data D1 analyzed is registered in the playlist PL. Therefore, the playback apparatus 10 can perform analysis of music characteristics for the music data D1 and registration in the playlist PL without hindering the user from using the apparatus main body. Therefore, the playback apparatus 10 does not care about the user's analysis of music characteristics based on the music data D1 or registration in the playlist PL, and when the user uses the apparatus main body, the playback apparatus 10 has already updated the playlist PL. I can keep it.

  Further, the playback device 10 notifies the user not only when the device main body shifts to the standby state but also when the music data D1 whose music characteristics are unanalyzed is stored in the data storage unit 13 to some extent, As a result, even if an analysis execution operation is performed by the user, the analysis of the music feature based on the music data D1 is started in a state where the processing load is low, and the music data D1 obtained by analyzing the music feature is obtained. Added to play list PL. Therefore, the reproducing apparatus 10 can quickly cope with a request for analysis of music characteristics for the music data D1 by the user, thus improving the usability of the apparatus main body.

  Furthermore, when the playback device 10 generates an unanalyzed music list indicating the music data D1 whose music characteristics are unanalyzed, the unanalyzed music designation information in the unanalyzed music list is data such as the storage date and time selected by the user. The music data D1 is analyzed in the order according to the attribute information DAT, the music characteristics based on the corresponding music data D1 is analyzed in the order of the rearranged unanalyzed music designation information, and the music characteristics D1 is analyzed. Added to list PL. Therefore, the playback device 10 can preferentially register the music data D1 requested by the user in the playlist PL, such as the music data D1 that has just been recorded and the music data D1 of the artist desired by the user.

  Furthermore, when the music data D1 whose music characteristics are not analyzed is stored to some extent in the data storage unit 13, the playback device 10 notifies the user to that effect. Accordingly, the playback apparatus 10 can prompt the user to analyze the music characteristics and register the music data D1 stored in the data storage unit 13 in the playlist PL. Therefore, the playback device 10 avoids as much as possible that the music data D1 whose music characteristics stored in the data storage unit 13 are not analyzed remains as it is without analyzing the music characteristics and registering them in the playlist PL. be able to.

(1-4) Other Embodiments In the first embodiment described above, when the registration unit 20 executes the other second stage process, two types of second and third threshold usage registrations are performed. Although the case where the first and second threshold value use registration condition tables RET3 and RET4 indicating conditions are used stepwise has been described, the present invention is not limited to this, and any threshold value use playlist in the first step process. If one piece of music data D1 that could not be registered for the PL can be registered in any one of the threshold value use playlists PL according to the characteristics of the music in the second stage process, one kind or three kinds or more One or more threshold usage registration condition tables indicating threshold usage registration conditions may be used. In the playback device 10, when three or more types of threshold usage registration conditions are used in the second stage process, the thresholds of the three or more types of threshold usage registration conditions are changed to slightly different values, and the first threshold usage registration is performed. When used in order from the closest value to the threshold value of the condition, one piece of music data D1 that could not be registered in any of the threshold value use playlists PL in the first step processing is music data having similar characteristics as much as possible. It is possible to register in the threshold value use playlist PL in which D1 is registered.

  In the first embodiment described above, the case where the playback device 10 analyzes the characteristics of music based on the music data D1 has been described. However, the present invention is not limited to this, and music based on the music data D1 is described. The analysis result of the feature may be acquired from the outside.

  Furthermore, in the first embodiment described above, in the second stage processing of threshold usage registration processing for registering music data D1 in the threshold usage playlist PL, a cluster usage registration condition table RET2 as a second registration condition table; Although the case where any one of the first and second threshold usage registration condition tables RET3 and RET4 is used has been described, the present invention is not limited to this, and in the second stage processing of the threshold usage registration processing, As the second registration condition table, the cluster use registration condition table RET2 and the threshold use registration condition table may be used in combination. In the case of such a configuration, in the second stage process of the threshold use registration process, the playback device 10 first shows a threshold use registration condition in which the matching range for the feature value is expanded compared to the first threshold use registration condition. A cluster is used when a plurality of threshold usage registration condition tables are used step by step, but music data D1 cannot be registered in the threshold usage playlist PL according to the music characteristics even when such threshold usage registration condition tables are used. The use registration condition table RET2 may be used.

  Further, in the above-described first embodiment, the case where the music feature based on the music data D1 stored in the data storage unit 13 by recording or downloading is described has been described, but the present invention is not limited to this. When the music data D1 is read and recorded from the media in the standby state of the apparatus main body (that is, the processing load is low), the music characteristics are analyzed while recording the music data D1, and the playlist PL is recorded. You may make it register.

  Furthermore, in the first embodiment described above, the processing load of the apparatus main body is low because the processing load of the playback unit 11 is in an idle state below a certain level and no operation is performed by the user for a certain period of time, and the standby state is entered. The case where the analysis of the music feature based on the music data D1 is started when the state is detected and the music data D1 obtained by analyzing the music feature is registered in the playlist PL has been described. However, the present invention is not limited to this, and when the processing load of the playback unit 11 is in an idle state below a certain level and the processing load of the apparatus main body is detected to be low, the music characteristic based on the music data D1 is not shifted to the standby state. Analysis may be started, and music data D1 obtained by analyzing the characteristics of the music may be registered in the playlist PL.

  Further, in the above-described first embodiment, the case where the threshold use registration process and the cluster use registration process for the music data D1 are executed when the music feature based on the music data D1 is analyzed has been described. The present invention is not limited to this, and only the threshold use registration process for the music data D1 may be executed when the characteristics of the music based on the music data D1 are analyzed.

  Furthermore, in the first embodiment described above, it is confirmed that among all the music data D1 stored in the data storage unit 13, music data D1 whose music characteristics are unanalyzed exists at a predetermined ratio or more. When detected, the case of notifying the user to that effect has been described. However, the present invention is not limited to this, and even one piece of unanalyzed music data D1 is stored in the data storage unit 13. Then, you may make it notify to that effect to a user.

  Furthermore, in the first embodiment described above, as a predetermined number of cluster use playlists PL, the morning playlist PL, the day playlist PL, the evening playlist PL, the night playlist PL, and the midnight playlist are used. Although the case where the PL is applied has been described, the present invention is not limited to this, and the use place of the device such as in a living room, a bedroom, a company, a train, etc. The determined playlist PL may be applied.

(2) Second Embodiment FIG. 30 shows a hardware circuit configuration of hardware circuit blocks of a playback apparatus 300 according to the second embodiment. When the operation input unit 301 including various operation buttons provided on the surface of the housing of the playback device 300 or a remote controller (not shown) is operated by the user, the playback device 300 is operated by the operation input unit 301. And an operation input signal corresponding to the operation is sent to the input processing unit 302. The input processing unit 302 performs predetermined processing on the supplied operation input signal to convert the operation input signal into an operation command, and converts the operation command signal via a bus 303 to a central processing unit (CPU: Central Processing Unit). ) 304.

  The central processing unit 304 reads various programs such as basic programs and application programs stored in advance in a ROM (Read Only Memory) 305 or a hard disk drive 306 to a RAM (Random Access Memory) 307 via the bus 303. The central processing unit 304 controls the whole in accordance with these various programs developed on the RAM 307, and executes predetermined arithmetic processing and various processing according to operation commands given from the input processing unit 302.

  Thus, the central processing unit 304 can connect to the network NT via the communication processing unit 308 and the network interface 309 in order, and can access the music providing server 310 on the network NT. In this case, the music providing server 310 stores a large number of music data in a predetermined format.

  Accordingly, when an operation input signal for requesting download of desired music data is input by the user via the operation input unit 301, the central processing unit 304 accesses the music providing server 310 in response to the input of the desired music data. Request to download data. As a result, the central processing unit 304 downloads the desired music data returned from the music providing server 310 via the network interface 309 and the communication processing unit 308 sequentially. As a result, the central processing unit 304 sends the music data to the hard disk drive 306 and stores it in the hard disk.

  Further, when an operation input signal for recording music data recorded on a medium such as a CD is input by the user via the operation input unit 301, the central processing unit 304 receives music data from the medium by the media drive 311. The read music data is sent to a data processing circuit 312 having a DSP (Digital Signal Processor) configuration, for example. The data processing circuit 312 compresses and encodes the music data given from the media drive 311, sends it to the hard disk drive 306, and stores it in the hard disk.

  The central processing unit 304 receives the operation input signal for requesting reproduction of the designated music data when the music data in the hard disk drive 306 is designated by the user via the operation input unit 301. The designated music data is read from the hard disk drive 306 and sent to the data processing circuit 312. At this time, the data processing circuit 312 decodes the music data, performs audio processing such as digital-analog conversion and amplification, and sends the obtained music signal to the speaker 313. In this way, the central processing unit 304 can output music based on the music signal from the speaker 313 and listen to the user.

  Furthermore, the hard disk drive 306 stores a plurality of types of playlists on the hard disk. The central processing unit 304 receives an operation input signal for designating a playlist to be used for reproducing music data and requesting to reproduce the music data according to the playlist via the operation unit 301 by the user. In response to this, the designated playlist is read from the hard disk drive 306. The central processing unit 304 sequentially reads out a plurality of music data registered in the playlist according to the play list from the hard disk drive 306 and sends it to the data processing circuit 312. Therefore, at this time, the data processing circuit 312 decodes the music data every time the music data is given from the central processing unit 304, and then performs audio processing such as digital-analog conversion and amplification, and the obtained music signal is transmitted to the speaker 313. To send. In this way, the central processing unit 304 can cause the user to continuously listen to a plurality of music by sequentially outputting music based on the music signal from the speaker 313.

  Further, the central processing unit 304 generates display data according to the execution results of various programs (for example, acquisition, recording and playback of music data) and sends them to the display processing unit 314. The display processing unit 314 displays a screen based on the display data given from the central processing unit 304 on the display 315. In this way, the central processing unit 304 can cause the user to visually recognize various screens related to acquisition, recording, and reproduction of music data via the display 315.

  By the way, in the playback apparatus 300, as described above, the central processing unit 304 basically executes various processes according to various programs stored in the ROM 305 or the hard disk drive 306 and controls each hardware. Therefore, in the playback device 300, various programs to be stored in the ROM 305 or the hard disk drive 306 according to the function of the playback device 10 having a hardware configuration with the functional circuit blocks described above with reference to FIG. The central processing unit 304 is selected in the same manner as the analysis unit 19 (FIG. 2) and the registration unit 20 (FIG. 2) by appropriately selecting the analysis module 101 (FIG. 29) and the management module 102 (FIG. 29). Can function. In the playback apparatus 300, the media drive 311, the data processing circuit 312 and the speaker 313 can function in the same manner as the playback unit 11 (FIG. 2), and the operation input unit 301 and the input processing unit 302 are configured as described above. The operation unit 12 (FIG. 2) can function in the same manner. Further, in the playback apparatus 300, the hard disk drive 306 can function in the same manner as the data storage unit 13 (FIG. 2), the list storage unit 16 (FIG. 2), and the table storage unit 21 (FIG. 2) described above, and communication. The processing unit 308 and the network interface 309 can function in the same manner as the communication unit 14 (FIG. 2) described above.

  Furthermore, in the playback apparatus 300, the display processing unit 314 can function in the same manner as the above-described display processing unit 17 (FIG. 2). The display 315 corresponds to the display unit 18 (FIG. 2) described above. The music providing server 310 corresponds to the external device 15 (FIG. 2) described above. Therefore, the playback apparatus 300 can execute the above-described processing similar to that of the playback apparatus 10 by appropriately selecting various programs to be stored in the ROM 305 or the hard disk drive 306 according to the function of the playback apparatus 10. The same effects as those of the first embodiment described above can be obtained.

  By the way, the playback apparatus 300 causes the central processing unit 304 to function in the same manner as the feature digitizing circuit in the analysis unit 19 by appropriately selecting various programs to be stored in the ROM 305 or the hard disk drive 306, and also analyzes the data processing circuit 312. It can function in the same manner as the frequency analysis circuit in the unit 19. Therefore, as in the case of the playback apparatus 10 described above with reference to FIG. 2, the playback apparatus 300 can efficiently perform analysis of music characteristics based on music data by linking the central processing unit 304 and the data processing circuit 312. .

(3) Other Embodiments In the first and second embodiments described above, the data registration device according to the present invention is applied to the playback devices 1, 10 and 300 described above with reference to FIGS. Although the present invention is not limited to this, the present invention is not limited to this, and information processing devices such as personal computers, mobile phones, and PDAs (Personal Digital Assistance), and playback devices such as portable music playback devices and stationary music playback devices Furthermore, the present invention can be widely applied to data registration apparatuses having various other configurations such as a recording / reproducing apparatus such as a DVD (Digital Versatile Disc) recorder and a hard disk recorder.

  In the first and second embodiments described above, the playlist PL is applied as described above with reference to FIGS. 1 to 30 as a plurality of types of lists that can be stored in the list storage unit and that can register music data. However, the present invention is not limited to this, and various other lists such as a transfer list used for registering music data D1 for transfer between devices can be widely applied. .

  The present invention can be used in a data registration device such as a music playback device that can play back music data according to a playlist.

It is a block diagram which shows the outline | summary of the reproducing | regenerating apparatus by 1st Embodiment. It is a block diagram which shows the detailed structure of the reproducing | regenerating apparatus by 1st Embodiment. It is a basic diagram which shows the structure of a remote controller. It is a basic diagram which shows the structure of a music database and a play list. It is a basic diagram which shows the structure of a selection screen. It is a basic diagram which shows the structure of a reproduction | regeneration screen. It is an approximate line figure used for explanation of change of a display screen at the time of execution of a list use reproduction function. It is an approximate line figure used for explanation of change of reproduction of music data according to change of a channel. It is a flowchart which shows a list utilization reproduction | regeneration function starting process sequence. It is a flowchart which shows a channel switching process procedure. It is a flowchart which shows the reproduction | regeneration music switching processing procedure. It is a basic diagram with which it uses for description of the characteristic digitization information showing the characteristic of music data. It is a basic diagram which shows the structure of a 1st registration condition table. It is an approximate line figure used for explanation of an exclusion group. It is a basic diagram with which it uses for description of the characteristic value for every music data. It is an approximate line figure used for explanation of comparatively severe registration conditions. It is a basic diagram with which it uses for description of registration of the music data to a play list according to comparatively severe registration conditions. It is a basic diagram with which it uses for description of the registration conditions comparatively eased. It is a basic diagram with which it uses for description of registration of the music data to the play list according to the registration conditions comparatively eased. It is a basic diagram with which it uses for description of registration of the music data to the play list according to the 1st registration condition table. It is a basic diagram which shows the structure of the cluster utilization registration condition table as a 2nd registration condition table. It is a basic diagram with which it uses for description of the detection of the vector space distance of music data and a cluster. It is a flowchart which shows the 1st two-step registration process procedure. It is a basic diagram which shows the structure of the 1st and 2nd threshold value use registration condition table as a 2nd registration condition table. It is a flowchart which shows the 2nd two-step registration process procedure. It is an approximate line figure used for explanation of threshold use registration processing. It is a basic diagram with which it uses for description of registration of the music data to the play list according to the 1st and 2nd registration condition table. It is a basic diagram which shows the structure of a 3rd registration condition table. It is a flowchart which shows an analysis registration process procedure. It is a block diagram which shows the structure of the reproducing | regenerating apparatus by 2nd Embodiment.

Explanation of symbols

  1, 10, 300... Playback device, 2, 16... List storage unit, 3, 21... Table storage unit, 4, 20... Registration unit, 13. ... Central processing unit, 306 ... Hard disk drive, 311 ... Media drive, 312 ... Data processing circuit, D1 ... Music data, PL ... Playlist, RET1 ... First registration condition table, RET2 ... Cluster usage registration condition table, RET3... First threshold usage registration condition table, RET4... Second threshold usage registration condition table, RT8... First two-stage registration processing procedure, RT9. Procedure, RT10 ... analysis registration processing procedure, SN ... feature digitization information.

Claims (13)

A list storage unit for storing a plurality of types of lists in which music data can be registered;
First and second registration condition tables indicating different registration conditions for registering the music data in any one of a plurality of types of the lists according to the music characteristics based on the music data are stored. A table storage unit,
The music data is registered in any one of the plurality of types of the list based on the feature and the first registration condition table, and the music data is selected according to the first registration condition table. A registration unit that registers the music data in any one of the plurality of types of lists based on the characteristics and the second registration condition table. A data registration device characterized by that. The table storage unit
The first registration condition table indicating a predetermined matching range for the feature is stored, and a plurality of types of clusters for classifying the music data according to the feature and the plurality of types of clusters are associated with each other. The data registration apparatus according to claim 1, wherein the second registration condition table indicating the list is stored. The table storage unit
The first registration condition table indicating a predetermined adaptation range for the feature is stored, and the second registration range for the feature is larger than the predetermined adaptation range indicated by the first registration condition table. The data registration apparatus according to claim 1, wherein a registration condition table is stored. A data storage unit for storing the music data;
The registration section
The data registration apparatus according to claim 1, wherein when the music data is stored in the data storage unit, the music data is registered in any one of the plurality of types of the lists. An analysis unit for analyzing the feature of music based on the music data stored in the data storage unit, the feature being unanalyzed when detecting a low processing load on the apparatus main body,
The registration section
The data registration apparatus according to claim 4, wherein the music data whose characteristics are analyzed by the analysis unit is registered in any one of the plurality of types of lists. The analysis part
6. The data registration apparatus according to claim 5, wherein when the standby state of the apparatus main body as a low processing load state is detected, the characteristic is analyzed based on the music data that has not been analyzed. . The analysis part
When it is detected that the apparatus main body has shifted to the standby state by continuing the idle state in which the playback unit has stopped the playback function for a certain period of time, the characteristics of the music based on the unanalyzed music data are The data registration device according to claim 6, wherein analysis is performed. The analysis part
The feature analyzes the feature of the music based on the unanalyzed music data when it is detected that the device main body has shifted to the standby state due to no operation for a certain period of time. The data registration device according to claim 6. The analysis part
A plurality of the music data whose characteristics are not analyzed stored in the data storage unit are arranged in an order corresponding to the attribute information of the music data, and the characteristics of the music based on the music data are analyzed in the order of the arrangement The data registration device according to claim 5, wherein: The analysis part
Detects a low processing load state in response to a power-off operation to the apparatus body, starts analysis of the characteristics of music based on the music data whose characteristics are unanalyzed, and all the characteristics are unanalyzed The data registration apparatus according to claim 5, wherein when the analysis of the characteristics of music based on the music data is completed, the apparatus main body is turned off. The analysis part
6. The data registration according to claim 5, wherein when the music data whose feature is not analyzed is stored in the data storage unit, the music data whose feature is not analyzed is notified. apparatus. A list storage unit that stores a plurality of types of lists in which music data can be registered, and the music data is registered in one of the plurality of types of the list according to the characteristics of the music based on the music data A data registration method for a data registration device having a table storage unit for storing first and second registration condition tables indicating different registration conditions,
The music data is registered in any one of the plurality of types of the list based on the feature and the first registration condition table, and the music data is selected according to the first registration condition table. A registration step of registering the music data in any one of the plurality of types of lists based on the characteristics and the second registration condition table. A data registration method characterized by the above. A list storage unit that stores a plurality of types of lists in which music data can be registered, and the music data is registered in one of the plurality of types of the list according to the characteristics of the music based on the music data For a computer having a table storage unit for storing first and second registration condition tables indicating different registration conditions of
The music data is registered in any one of the plurality of types of the list based on the feature and the first registration condition table, and the music data is selected according to the first registration condition table. If the music data cannot be registered in the list, the registration step of registering the music data in any one of the plurality of types of the list based on the feature and the second registration condition table is performed. Data registration program.

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