JP2008148042A - Recording / playback device - Google Patents

Abstract

The present invention relates to a recording / playback apparatus capable of improving convenience by presenting recorded program information close to a user's preference, a playback start position in a recorded program, and the like based on a user's viewing history.
A calculation unit 110 reads management information included in video / audio data and stores the management information in a storage unit 109. When the video / audio data is reproduced by the video / audio decoding unit 105, the calculation unit 110 The management information associated with the reproduced video / audio data is read from the storage unit 109, the current date / time information is acquired from the clock control unit 115, and a reproduction operation table in which the management information is associated with the date / time information is generated. To do.
[Selection] Figure 1

Description

  The present invention relates to a recording / reproducing apparatus capable of recording various broadcast programs on an information medium or reproducing a program recorded on the information medium. In particular, in a video recorder equipped with a large-capacity information medium such as a hard disk video recorder, when a user plays back a recorded program, the user likes it based on historical information such as the user's playback operation procedure. The present invention relates to a video decoder having a function of presenting a reproduction location such as a recording / reproduction start position, and a method for presenting a reproduction start position of a recorded program.

  In recent years, video decoders equipped with a large-capacity storage medium such as a hard disk video recorder have been commercialized, and the spread rate has been increasing. From now on, a video decoder having a storage medium such as a hard disk drive having a larger capacity is required by users. In addition, video decoders compatible with BS / CS digital broadcasting and terrestrial digital broadcasting are also being commercialized.

  Users use the video decoder as described above to record and save broadcast programs on a daily or weekly basis, and select and view the recorded programs when they can be viewed. Is becoming permanent.

  Here, with the spread of digital broadcasting, as a function of the video decoder, a program suitable for the user's preference is presented, and the opportunity to record more programs is increasing, There is an increasing need to appropriately present recorded program contents to users.

  Specifically, Japanese Patent Laid-Open No. 2002-44542 (Patent Document 1) acquires information such as a user's reproduction operation, reproduction range, number of reproductions, and reproduction speed during time-shift reproduction, and analyzes the information. Thus, an apparatus for presenting a program according to the user's preference is disclosed.

  Japanese Patent Laid-Open No. 2005-73037 (Patent Document 2) describes that when a recorded program is played back, if the scene to be viewed is searched for by fast-forwarding, skipping, thumbnail display, etc. and playback is started, The history of the position at the start of playback is stored as a bookmark, and when searching for subsequent viewing scenes of the same program, it is selected from the list of stored bookmarks, and playback is started based on the selected bookmark. An apparatus is disclosed that provides a video recorder that can be quickly searched for a desired scene when viewing the same corner in the same recorded program.

  Japanese Patent Application Laid-Open No. 2005-109529 (Patent Document 3) includes a management unit that manages recorded programs in the order of recording times and manages how far the program has been played back, so that the entire program can be pre-programmed in units of programs. There has been disclosed an apparatus for recording and playing back from the previous continuation by selecting “unplayed latest program in which the entire program has been recorded” when the user instructs playback.

Japanese Patent Laying-Open No. 2006-5514 (Patent Document 4) is configured to calculate a content-corresponding preference value that changes with the passage of time in a content-corresponding preference degree calculation process. As a configuration for generating and presenting to the user a content list according to the value of the preference level that changes with the device, a device and a method for realizing the content list presentation and content playback according to an appropriate preference level according to the date and time are provided. An apparatus is disclosed.
JP 2002-44542 A JP-A-2005-73037 JP 2005-109529 A JP 2006-5514 A

  However, in the above-described program presentation apparatus, even if information for program presentation in a certain program is obtained, it can be applied only to that program. Furthermore, when a new program is recorded, the program presentation information that has already been acquired cannot be applied, and the program presentation function is often limited. Further, even when the management information includes a genre, it can only present a program in units of programs according to the user's preference, and cannot present a detailed scene in the program.

  In view of the above problems, the present invention can improve convenience by presenting recorded program information close to the user's preference, a playback start position in the recorded program, and the like based on the user's viewing history. The present invention relates to a recording / playback apparatus.

  In order to achieve the above object, a recording / playback apparatus according to the present invention includes a demodulator that demodulates a broadcast signal into video / audio data composed of video data and audio data, and an audio / video data demodulated by the demodulator. A recording unit for recording, a reproduction unit for reproducing the video / audio data recorded on the information medium, a clock control unit for outputting date / time information including at least current date and time information, and the video / audio data And a calculation unit that reads out the management information contained in the storage unit and stores the management information in a storage unit, wherein the calculation unit is reproduced when the video / audio data is reproduced by the reproduction unit Management information associated with the video / audio data is read from the storage unit, current date / time information is acquired from the clock control unit, and the management information and the date / time information are acquired. And generates a reproduction operation table associates and.

  The recording / playback apparatus of the present invention can improve convenience by presenting recorded program information close to the user's preference, a playback start position in the recorded program, and the like based on the viewing history of the user.

  The recording / playback apparatus of the present invention further includes an image generation unit that creates graphics and an image synthesis unit that synthesizes graphics with the video data, and the arithmetic unit controls the clock control when the device is activated. The current time information is acquired from the section, the date / time information having time information close to the current time is searched in the reproduction operation table, and the management information associated with the acquired date / time information is acquired. The management information stored in the storage unit is searched based on information included in the management information, a list is created based on the management information acquired by searching, and the image generation unit The graphics can be configured to synthesize the graphics generated by the image generation unit with the video data.

  Further, the clock control unit can acquire day information, the reproduction operation table includes the day information acquired by the clock control unit, and the arithmetic unit is configured to control the clock control when the apparatus is activated. Information of the current day of the week is obtained from the section, the date / time information having day information close to the current day of the week is searched in the reproduction operation table, and management information associated with the date / time information obtained by searching is obtained. The management information stored in the storage unit can be searched based on information included in the management information, and a list can be created based on the management information acquired by searching.

  In addition, an operation unit that receives an operation by a user is further provided, and the calculation unit converts the type of the reproduction operation received by the operation unit into a quantitative value corresponding to each type, and the video and audio data During reproduction, a reproduction position table in which the values are recorded every predetermined time can be generated.

  Further, the calculation unit calculates an average value obtained by averaging the values in the plurality of reproduction position tables in units of the predetermined time, determines a type of the reproduction operation based on the average value, and determines the type In this case, a list can be created by using the timing at which the normal playback operation is performed as playback position candidates, and the playback position information can be presented.

  Further, a plurality of the reproduction position tables may be provided corresponding to each time length type of the video / audio data.

  Further, at least one of the reproduction operation table and the reproduction position table can be created for each user.

  The most important aspect of the present invention is that the program management and the playback position presentation are performed on a general basis by utilizing the information that associates the recorded management information with time information such as the playback date and time, and the playback operation information of the recorded program. Features. For example, on a certain day of the week or time, by associating information such as a genre of a program to be reproduced by a user and information such as a recording time of a recorded program, a bias of programs to be actively reproduced by the user is extracted. As a result, it is possible to identify the correlation between the user's preference and the reproduction date and time, and to realize an appropriate program presentation function for the user. Furthermore, the reproduction operation information in the recorded program also becomes information of the program presentation unit. When the same scene flows every time, such as an opening for a certain period of time at the start of the program, the user does not watch it by performing a fast-forward operation, etc. There are also many viewing requests from users who have become accustomed to operating a video recording device such as a VTR. Therefore, it is possible to associate the relationship between the reproduction operation procedure in the recorded program and the reproduction time, and realize program presentation and reproduction position presentation. In addition, the accuracy of the playback position presentation function can be improved by sampling more playback operations by the user. Hereinafter, the recording / reproducing apparatus of the present invention will be described in detail.

(Embodiment 1)
[1. Basic configuration of recording / playback device]
FIG. 1 is a block diagram showing the configuration of the recording / playback apparatus according to the first embodiment. 1, a recording / playback apparatus 100 includes a modulation unit 102, a decoding unit 103, an information medium 104, a video / audio decoding unit 105, an image synthesis unit 106, a signal conversion unit 107, a storage unit 109, a calculation unit 110, and an image generation unit 111. , An operation unit 112, a remote control reception unit 113, and a clock control unit 115. The recording / playback apparatus 100 has a receiving unit 101 and a display device 108 externally connected. The recording / playback apparatus 100 can also be operated by the remote operation unit 114.

  The receiving unit 101 receives video data, audio data, management information related thereto, and the like transmitted from a broadcaster as analog signals. In addition, an analog signal transmitted from a broadcaster is input to the receiving unit 101 via a transmission path such as a satellite wave, a terrestrial wave, or a cable. The receiving unit 101 is configured with an antenna, for example.

  The modulation unit 102 modulates the analog signal output from the reception unit 101 into a digital signal. The digital signal modulated by the modulation unit 102 is composed of, for example, an MPEG2 transport stream. The digital signal modulated by the modulation unit 102 is composed of a plurality of channels.

  When a specific channel is selected from a plurality of channels of the digital signal output from the modulation unit 102, the decoding unit 103 can acquire and demodulate digital data such as video data, audio data, and management information. The acquired digital data is composed of, for example, MPEG video packets, MPEG audio packets, and management information related to them. Video and audio digital data is stored in the information medium 104, and management information is stored in the storage unit 109. Digital data such as video and audio acquired by the decoding unit 103 is referred to as video / audio digital data. The audio / video digital data stored in the information medium 104 is stored in units of broadcast programs. In addition, the video / audio digital data includes data related to various information (information such as recording date and time) associated therewith.

  The video / audio decoding unit 105 decodes the video / audio digital data decoded by the decoding unit 103 or the video / audio digital data read from the information medium 104, and outputs a video signal and an audio signal. The video / audio decoding unit 105 includes, for example, an MPEG video decoder and an MPEG audio decoder.

  The image synthesis unit 106 synthesizes the management information stored in the storage unit 109 or the graphics output from the image generation unit 111 and the video signal output from the video / audio decoding unit 105. The graphics output from the image generation unit 111 is an image of the result calculated by the calculation unit 110 based on operation information from the operation unit 112 or the remote operation unit 114. The image synthesis unit 106 outputs a digital signal obtained by synthesizing a video signal and graphics.

  The signal conversion unit 107 converts the digital signal output from the image synthesis unit 106 into an analog signal.

  The display device 108 receives the analog video signal and the analog audio signal output from the signal conversion unit 107, and performs video projection and audio output. The display device 108 is composed of, for example, a monitor including a cathode ray tube, a liquid crystal display, a CRT display, a television receiver, or the like. In addition, a device that outputs sound in the display device 108 is configured by, for example, a speaker.

  The storage unit 109 stores management information output from the decoding unit 103, the calculation result of the calculation unit 110, and the like. In addition, the storage unit 109 includes a reproduction operation table that summarizes the reproduction frequency distribution for each date and time and program genre, and a reproduction position table that summarizes the distribution of operation histories during reproduction (operation histories such as normal reproduction and fast-forward reproduction). Stored. The reproduction operation table and the reproduction position table will be described later.

  The calculation unit 110 creates information on the recording program presentation and the reproduction position presentation based on the management information stored in the storage unit 109 and the operation information from the operation unit 112 or the remote operation unit 114, and stores the information in the storage unit 109. . When operated by the user to present the above information, the calculation unit 110 acquires information on the recorded program presentation and the reproduction position presentation from the storage unit 109, and obtains the current date, day of the week, and current present from the clock control unit 115. Get time information. Then, based on the acquired information, an optimal candidate list is created from the management information stored in the storage unit 109, and graphics are created by the image generation unit 111. The calculation unit 110 is configured by a chip having a calculation processing function such as a CPU (Central Processing Unit).

  The image generation unit 111 creates graphics based on information (candidate list or the like) output from the calculation unit 110 and outputs the graphics to the image composition unit 106.

  The operation unit 112 and the remote operation unit 114 are user operation interfaces, and accept operation inputs such as recording, reproduction, and selection. The operation unit 112 includes operation buttons mounted on the device. The remote operation unit 114 is configured by a remotely operable device such as a remote controller. Signal transmission from the remote control unit 114 can be performed by a wireless transmission method such as infrared communication or Bluetooth.

  The remote control receiving unit 113 receives a signal wirelessly transmitted from the remote operation unit 114 and transmits operation information to the calculation unit 110. The receiving unit 113 includes, for example, an infrared light receiving unit and a radio wave receiving unit.

  The date / time acquisition unit 115 acquires information on the current date, day of the week, and time. The acquired information is output to the calculation unit 110. The date / time acquisition unit 115 is constituted by, for example, a clock or a calendar realized by hardware or software.

  In FIG. 1, the recording / playback apparatus 100 is described so as to include a configuration that is preferably arranged in the same device, but is not limited to the configuration shown in the figure, and is not limited to the configuration shown in the figure. The device 108 may be built in the recording / playback device 100.

  The operation will be described below.

  First, when recording a broadcast program, when a recording start command is input by the operation unit 112 or the remote control operation unit 114, the calculation unit 110 controls the modulation unit 102, the decoding unit 103, and the information medium 104, The broadcast program received by the receiving unit 101 is recorded on the information medium 104 as video / audio digital data. Along with the recording operation of the program, information accompanying the program is stored in the storage unit 109. In FIG. 1, for convenience of explanation, control lines connected from the arithmetic unit 110 to each unit are omitted.

  Next, when reproducing the video / audio digital data recorded on the information medium 104, when the operation unit 112 or the remote control operation unit 114 receives an instruction to start reproduction of a predetermined recorded program, the calculation unit 110 displays the information medium. 104, the video / audio decoding unit 105 and the like are controlled to read the video / audio digital data recorded on the information medium 104 to the video / audio decoding unit 105. The video / audio decoding unit 105 decodes the read video / audio digital data and outputs a video signal and an audio signal. The decoded video signal and audio signal are input to the signal conversion unit 107 via the image synthesis unit 106. The signal conversion unit 107 converts the input digital video signal and audio signal into the analog video signal and analog audio signal. And output to the display device 108. The display device 108 displays video based on the input video signal on a display device, and outputs audio based on the input audio signal from a speaker or the like.

  In the present embodiment, when the video / audio digital data recorded on the information medium 104 is played back, the video / audio digital data is stored in the storage unit 109 based on the date and time of playback and the genre information included in the played back video / audio digital data. The playback operation table being updated is updated. In addition, during the reproduction of the video / audio digital data, the reproduction position table stored in the storage unit 109 is updated based on the information on the operation content of the operation unit 112 and the timing information when the operation unit 112 is operated. Is done. The update operation of the reproduction operation table and the reproduction position table will be described later.

[2. (Replay operation table update processing)
FIG. 2 is a flowchart illustrating an example of the update operation table update process in the recording / playback apparatus according to the first embodiment. FIG. 3 shows an example of the reproduction operation table.

  As shown in FIG. 2, first, when the operation unit 112 or the remote operation unit 114 receives a command to start playback of a predetermined recorded program (step S1), the calculation unit 110 receives the current date, The day of the week and time information is acquired (step S2).

  Next, the calculation unit 110 reads the reproduction operation table stored in the storage unit 109. In the read reproduction operation table, it is confirmed whether or not the column corresponding to the current date and time information acquired from the clock control unit 115 is in the reproduction operation table. If there is a field corresponding to the current date and time information in the reproduction operation table, the process proceeds to step S5. If there is no column corresponding to the current date and time information in the reproduction operation table, the process proceeds to step S4. (Step S3).

  Here, in the reproduction operation table shown in FIG. 3, the horizontal axis indicates management information, and is composed of a program genre and a program time (length from the program start time to the end time). The vertical axis indicates the reproduction date / time information, and is composed of day and time information when the user reproduced the recorded program. The numerical value of the portion where the vertical axis and the horizontal axis intersect indicates the number of times of reproduction (viewing frequency variable) that satisfies each condition shown on the vertical axis and the horizontal axis. For example, according to FIG. 3, it can be seen that a drama having a program time of 30 minutes has been viewed 17 times in the past at 20:00 on Friday. Note that the viewing frequency variable shown in FIG. 3 is used to determine the priority when a program is presented.

  If there is no column corresponding to the current date and time in the reproduction operation table in step S3, a column corresponding to the current date and time information is created in the reproduction operation table (step S4).

  Next, the calculation unit 110 acquires genre information (“drama”, “news”, etc.) attached to the video / audio digital data to be reproduced. Specifically, video / audio digital data corresponding to a recorded program selected by the user is extracted from the video / audio digital data recorded on the information medium 104, and management information included in the video / audio digital data is extracted. Genre information is acquired from the list (step S5).

  Next, the calculation unit 110 confirms whether or not the reproduction operation table includes a genre column corresponding to the genre information acquired in step S5. If there is a corresponding genre field, the process proceeds to step S8. If there is no corresponding genre column, the process proceeds to step S7 (step S6).

  If the genre field corresponding to the genre information acquired in step S5 does not exist in the reproduction operation table, a new genre field is created (step S7).

  Next, the calculation unit 110 increments the viewing frequency variable in the corresponding column in the reproduction operation table based on the current date information acquired in step S2 and the genre information acquired in step S5 (step S8). For example, when a user plays a news program with a program time of 60 minutes at 22:00 on Friday, the viewing frequency variable in the corresponding column in the playback operation table of FIG. 3 is incremented from “6” to “7”.

  Next, the calculation unit 110 saves the reproduction operation table in the storage unit 109 (step S9).

  By performing the processing as described above, each time the recorded program recorded on the information medium 104 is reproduced, the corresponding viewing date and time and the viewing frequency variable in the genre in the reproduction operation table are incremented. Therefore, the tendency of the viewing frequency for each viewing date and time and genre for the user can be tabulated.

[3. (Replay position table update processing)
FIG. 4 is a flowchart showing an example of the update process of the reproduction position table in the first embodiment.

  As shown in FIG. 4, first, when the operation unit 112 or the remote operation unit 114 receives an instruction to start playback of a predetermined recorded program (step S11), the calculation unit 110 displays management information associated with the video / audio digital data. Information of the program time of the recorded program (required time from the start to the end of the program) is acquired (step S12).

  Next, the calculation unit 110 reads the reproduction position table stored in the storage unit 109. In the read reproduction position table, it is confirmed whether or not there exists a reproduction position table close to the length of the program time acquired in step S12 (step S13). If there is a playback position table close to the length of the program time in step S13, the process proceeds to step S15. If there is no playback position table close to the length of the program time, the process proceeds to step S14, and an approximate playback position table is created from predetermined length candidates (30 minutes, 60 minutes, etc.).

  Next, the calculation unit 110 checks whether or not there is a blank in the playback position table (step S15). If there is a blank in the playback position table, the process proceeds to step S17. If there is no blank in the playback position table, the process proceeds to step S16, where the data in the oldest column in the playback position table is released and secured as a blank.

  Next, the calculation unit 110 sets the blank in the reproduction position table as an update column (step S17).

  Next, the calculation unit 110 determines whether or not the reproduction of the video / audio digital data corresponding to the designated recorded program has been completed (step S18). It is confirmed whether or not elapses (step S19). If the fixed time has not elapsed since the start of reproduction, the process waits until the fixed time elapses, and returns to step S18 (step S21). In step S19, if a predetermined time has elapsed since the start of reproduction, the current reproduction operation state (normal reproduction, fast forward reproduction, etc.) is written in the update column of the reproduction position table, and the process returns to step S18 (step S20).

  In step S18, when the reproduction of the recorded program is completed, the update column in the reproduction position table is saved. Further, an average value at each time of all the columns in the reproduction position table is obtained, the expected reproduction procedure is determined, and reproduction position candidates are created (step S22).

  Next, the calculation unit 110 saves the reproduction position table in the storage unit 109 (step S23).

  FIG. 5 is a graph showing temporal changes in the type weight of the reproduction operation during the reproduction operation of the first embodiment. FIG. 5 shows a case where a user's reproduction operation is converted into a quantitative value for each time in the program when the length of the recorded program is 30 minutes. The horizontal axis of FIG. 5 shows the elapsed time of the recorded program. The vertical axis indicates the weight of the reproduction operation in which the operation type is associated with the quantitative value. In this example, the normal reproduction state is defined as “100”, the fast-forward state as “50”, and the stop state as “0” as a quantitative value of the type of the reproduction operation.

  As shown in FIG. 5, since the opening theme, commercial, etc. of the recorded program are reproduced from the start of the reproduction of the recorded program until the timing t1, the user skips by performing a fast-forward operation. Next, since the main part of the recorded program is reproduced from timing t1 to t2, a normal reproduction operation is performed. Next, from timing t2 to t3, since a commercial or the like is reproduced, this indicates that the user has skipped by performing a fast-forward operation. In this example, fast forward operation is performed for several minutes before and after 15 minutes from the beginning of the recorded program.

  Next, since the main part of the recorded program is reproduced from timing t3 to t4, a normal reproduction operation is performed. Next, from timing t4 to t5, since the ending theme or commercial of the recorded program is reproduced, it represents that the user skips by performing a fast-forward operation. Next, from the timing t5 to the end of the recorded program, the next preview video of the recorded program is reproduced, so that a normal reproduction operation is performed.

  FIG. 6 shows an example of the playback position table of the first embodiment. The example shown in FIG. 6 is an example in which the length of time of a recorded program is 30 minutes and the number of samplings of a user's operation is 15, and the numbers on the horizontal axis indicate each timing within the playback time of the recorded program. Show in minutes. The numerical value on the vertical axis represents the sampling number. The numerical value at the portion where the horizontal axis and the vertical axis intersect indicates the quantitative value of the reproduction operation defined in FIG. The total column indicates a value obtained by adding the quantitative values of the sampled reproduction operations at each timing. The average column shows the average value of the quantitative values of the reproduction operation created by dividing the total value at each timing by the number of samplings. The column of the expected playback procedure indicates the playback operation type determined based on the average value. Specifically, the result of comparing the average value of the quantitative values with the reference quantitative value set for each reproduction operation type and determining the reproduction operation type approximate to the average value is shown. The reproduction position candidate column traces the expected reproduction procedure in time series, and specifies a portion that has changed from a fast-forward operation to a normal reproduction operation. It can be determined that the user has a tendency to start viewing (that is, start of normal reproduction) at the specified location, and a reproduction position presentation screen can be used as a reproduction position candidate when creating.

  FIG. 7 shows an example of a program presentation / playback position presentation screen in the first embodiment. In the screen shown in FIG. 7, the calculation unit 110 reads out the reproduction operation table and the reproduction position table stored in the storage unit 109, analyzes information in each table, generates information, and generates the information It is the screen produced | generated by the image generation part 111 based on it.

  In FIG. 7, two program information 71 and 72 are displayed in this embodiment. Each program information includes a program name, a recording date and time, a genre, program contents, and a thumbnail image at a predetermined reproduction timing. In the thumbnail image, a thumbnail image 73 at the beginning of the program, a thumbnail image 74 of the main part A, a thumbnail image 75 of the main part B, and a thumbnail image 76 of the main part C are displayed. The main part A is video and audio reproduced in a range indicated by timings t1 to t2 in FIG. The main part B is video and audio reproduced in a range indicated by timings t3 to t4 in FIG. The main part C is video and audio reproduced in the range shown from the timing t5 to the end in FIG.

  As shown in FIG. 7, based on two types of information, that is, information on the current day of the week and time, and a program operation table that has already been created by past user operations, among the programs recorded on the information medium 104. Thus, program presentation candidates that match the user's preference are listed according to priority. Furthermore, the reproduction position candidates in each program presentation candidate are listed from two pieces of information, that is, the program information of the listed program presentation candidates and the reproduction position table that has already been created by a past user operation. A screen as shown in FIG. 7 is displayed on the display device 108 by the program presentation candidate list and the reproduction position candidate list.

  By selecting one of the thumbnail images 73 to 76 displayed as shown in FIG. 7, it is possible to start reproduction from the selected portion. For example, by selecting and operating the thumbnail image 74 of the main part A, the reproduction can be started from the main part A of the recorded program, and the reproduction of the head portion of the program, which is relatively fast-forwarded, can be omitted.

[4. Effects of the embodiment
According to the present embodiment, the program is presented to the user and the playback position is presented using the information that associates the recorded program with time information such as the playback date and time, and the playback operation information of the recorded program. , Can improve usability.

  In other words, on a certain day of the week and time, by associating information such as the genre of the program to be reproduced by the user and the recording time of the recorded program, the bias of the program to be actively reproduced by the user is extracted. Thereby, it is possible to identify the correlation between the user's preference and the reproduction date and time, and to present an appropriate program to the user.

  Furthermore, the reproduction operation information in the recorded program also becomes information at the time of program presentation. For example, at the start of a program, the same scene such as an opening video often flows, but the user should not watch such a scene by performing a fast-forward operation or the like, but from the start of the main part of the program There are many. In many cases, a recording / playback apparatus that uses a hard disk or an optical disk as an information medium cannot start viewing from the time when it was in the middle of the previous viewing. For this purpose, in the present embodiment, the relationship between the playback operation procedure in the recorded program and the playback time is associated, the playback time at which the user frequently fast forwards is grasped, and the playback start timing immediately after the fast forward timing is grasped. Based on the grasped reproduction start timing, the recorded program can be reproduced from the beginning of the main part. This can increase the accuracy of the playback position presentation function by sampling more playback operations by the user.

  The recording / playback apparatus of the present invention is useful for an apparatus including at least means capable of receiving a broadcast program and means capable of recording and playing back the received broadcast program on an information medium. For example, the present invention can be applied to DVD recorders and hard disk recorders with built-in tuners that can generally receive television broadcasts, personal computers with built-in tuners, portable terminals with built-in tuners, and the like.

1 is a block diagram showing a configuration of a recording / playback apparatus according to Embodiment 1 of the present invention. Reproduction operation table creation processing flowchart in Embodiment 1 of the present invention Table map showing data storage format of reproduction operation table in Embodiment 1 of the present invention Reproduction position table creation processing flowchart in Embodiment 1 of the present invention Graph of reproduction position information in Embodiment 1 of the present invention Table map showing data storage format of reproduction position table in Embodiment 1 of the present invention Schematic diagram showing a program presentation and playback position presentation screen in Embodiment 1 of the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 Reception part 102 Modulation part 103 Decoding part 104 Information medium 105 Image | video audio | voice decoding part 106 Image composition part 107 Signal conversion part 108 Display apparatus 109 Storage part 110 Arithmetic part 111 Image generation part 112 Operation part 113 Remote control reception part 114 Remote operation part 115 Clock control unit

Claims (7)

A demodulator that demodulates the broadcast signal into video / audio data composed of video data and audio data;
A recording unit for recording the video / audio data demodulated by the demodulation unit on an information medium;
A playback unit for playing back video and audio data recorded on the information medium;
A clock controller that outputs date and time information including at least current date and time information;
A recording / playback apparatus comprising a calculation unit that reads management information included in the video / audio data and stores the management information in a storage unit,
The computing unit is
When the video / audio data is reproduced by the reproduction unit, the management information associated with the reproduced video / audio data is read from the storage unit, and the current date / time information is acquired from the clock control unit,
A recording / playback apparatus that generates a playback operation table in which the management information and the date / time information are associated with each other. An image generator for creating graphics;
An image synthesis unit for synthesizing graphics with the video data,
The computing unit is
When starting up the device, obtain the current time information from the clock control unit,
In the reproduction operation table, search the date time information having time information close to the current time,
Obtain management information associated with the date and time information obtained by searching,
Search the management information stored in the storage unit based on the information included in the management information,
Create a list based on the management information obtained by searching,
The image generation unit generates graphics based on the list,
The image synthesizing unit synthesizes the graphics generated by the image generating unit with the video data;
The recording / reproducing apparatus according to claim 1. The clock control unit can acquire day information,
The reproduction operation table includes the day of the week information acquired by the clock control unit,
The computing unit is
When starting up the device, the current day of the week information is acquired from the clock control unit,
In the reproduction operation table, the date time information having day information close to the current day is searched,
Obtain management information associated with the date and time information obtained by searching,
Search the management information stored in the storage unit based on the information included in the management information,
Create a list based on the management information obtained by searching,
The recording / reproducing apparatus according to claim 2. An operation unit that receives an operation by a user is further provided,
The computing unit is
The type of the reproduction operation accepted by the operation unit is converted into a quantitative value corresponding to each type,
When reproducing the video / audio data, a reproduction position table in which the value is recorded every predetermined time is generated.
4. The recording / reproducing apparatus according to claim 1 or 3. The computing unit is
An average value obtained by averaging the values in the plurality of reproduction position tables in the predetermined time unit is calculated.
Determine the type of playback operation based on the average value,
In the determined type, a list is created with the timing of normal playback operation as playback position candidates, and playback position information is presented.
The recording / reproducing apparatus according to claim 4. A plurality of the playback position tables are provided for each type of time length of the video / audio data,
The recording / reproducing apparatus according to claim 5. At least one of the reproduction operation table and the reproduction position table can be created for each user.
The recording / reproducing apparatus according to claim 1.

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