JP2002049374A - Music playback device, information acquisition method, information management server, control method therefor, and music playback system - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a music reproduction system that enables a user who purchases a recording medium on which music data is recorded to automatically obtain additional data, information, and the like. SOLUTION: The music management system includes an information management server 3 for managing additional information which is information incidental to music data recorded on a music recording medium, and a music reproducing device 1 for acquiring additional information from the information management server 3. The reproducing apparatus 1 transmits a control unit 13 for acquiring an information acquisition code recorded on a music recording medium from the reproducing unit 11 to the information management server 3 via a communication line.
The information management server 3 receives the information acquisition code and transmits the additional information corresponding to the information acquisition code to the music reproducing apparatus 1. Transmitting / receiving means 31 and information storage means 3 for storing an information acquisition code and additional information in pairs
3 and an information management means 32 for reading out additional information corresponding to the information acquisition code received by the transmission / reception means 31 from the information storage means 33 and outputting the additional information to the transmission / reception means 31.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a music reproducing apparatus for reproducing music data from a music recording medium on which music data is recorded, an information acquiring method for acquiring additional information corresponding to the music recording medium, and a method for acquiring the additional information. Information management server to manage,
The present invention relates to a control method and a music reproduction system.

[0002]

2. Description of the Related Art Conventionally, CD (Compact Diss)
A user who purchased a recording medium on which music data such as k) was recorded could listen to music by setting the recording medium on a CD player or the like.

[0003]

However, the music C
The data obtained by the user who purchased D is the music CD
If you want other music data and information limited to the music data recorded in, purchase a music CD separately,
It was necessary to obtain information via the Internet. The present invention has been made in view of such a problem, and a user who has purchased a recording medium on which music data is recorded can automatically obtain additional data, information, and the like. It is an object to provide an information acquisition method, an information management server, a control method thereof, and a music reproduction system.

[0004]

In order to achieve the above object, a music reproducing apparatus according to the present invention acquires the additional information from an information management server that manages the additional information that is information accompanying the music data. A music reproducing apparatus, comprising: reproducing means for reproducing a music recording medium on which music data and an information acquisition code are recorded; control means for acquiring the information acquisition code from the reproduction means; and information acquisition obtained by the control means. A transmission / reception means for transmitting a code to the information management server via a communication line and receiving additional information corresponding to the information acquisition code from the information management server.

[0005] The music reproducing apparatus according to the present invention is characterized in that the music reproducing apparatus further comprises a storage means for storing the additional information received by the transmitting / receiving means.

The music reproducing apparatus according to the present invention is characterized in that the music reproducing apparatus further comprises recording means for recording the additional information received by the transmitting / receiving means on a removable recording medium. .

In the music reproducing apparatus according to the present invention, in the music reproducing apparatus, a decryption key is also recorded on the music recording medium, and the additional information received by the transmitting / receiving means from the information management server is encrypted. Wherein the control means decrypts the encryption of the additional information using the decryption key.

In the music reproducing apparatus according to the present invention, in the music reproducing apparatus, a decryption key is also recorded on the music recording medium, and the additional information received by the transmitting / receiving means from the information management server is encrypted. The recording means records the decryption key corresponding to the additional information together with the additional information on a removable recording medium.

Further, in the music reproducing apparatus according to the present invention, in the music reproducing apparatus, the control means confirms whether or not the music recording medium used for acquiring the additional information is stored in the music reproducing apparatus. The processing for the additional information is performed only when the music recording medium is stored.

In the music reproducing apparatus according to the present invention, in the music reproducing apparatus, the control means may determine whether the music recording medium used for acquiring the additional information is stored in the music reproducing apparatus at predetermined time intervals. Is confirmed.

Further, in the music reproducing apparatus according to the present invention, in the music reproducing apparatus, the information acquisition code recorded in the music recording medium differs between the purchased music recording medium and the rented music recording medium. The means receives different additional information for the purchased music recording medium and the rented music recording medium.

Further, an information management server according to the present invention is an information management server for transmitting additional information to a music playback device, receiving an information acquisition code from the music playback device, and transmitting the information acquisition code to the music playback device. Transmitting / receiving means for transmitting additional information corresponding to the information, information storage means for storing the information acquisition code and the additional information in pairs, and additional information corresponding to the information acquisition code received by the transmission / reception means in the information storage means. And information management means for reading the additional information from the information storage means when the information is recorded, and outputting the information to the transmission / reception means.

Further, the music reproducing system according to the present invention comprises:
A music playback system comprising: an information management server that manages additional information that is information incidental to music data; and a music playback device that acquires additional information from the information management server, wherein the music playback device includes music data and A reproducing unit for reproducing a music recording medium on which an information acquisition code is recorded; a control unit for acquiring the information acquisition code from the reproduction unit; and an information acquisition code acquired by the control unit via the communication line. First transmission / reception means for transmitting to the management server and receiving additional information corresponding to the information acquisition code from the information management server, wherein the information management server receives the information acquisition code from the music playback device. A second transmitting / receiving means for transmitting the additional information corresponding to the information acquisition code to the music reproducing apparatus; and a pair of the information acquisition code and the additional information. The additional information corresponding to the information acquisition code received by the transmitting / receiving means is read out from the information storing means, and the additional transmitting / receiving means reads out the additional information from the information storing means. And an information management means for outputting the information to the server.

Further, an information acquisition method according to the present invention is an information acquisition method for acquiring, from an information management server, additional information which is information associated with music data, wherein the music recording medium stores music data and an information acquisition code. Reading the information acquisition code from, transmitting the information acquisition code to the information management server, and receiving additional information corresponding to the information acquisition code from the information management server. It is a feature.

Further, the information acquisition method according to the present invention is characterized in that the information acquisition method further comprises a step of recording the additional information received from the information management server.

Further, in the information acquisition method according to the present invention, in the information acquisition method, the additional information is recorded on a removable recording medium.

[0017] A method for controlling an information management server according to the present invention is a method for controlling an information management server for transmitting additional information to a music playback device, comprising the step of receiving an information acquisition code transmitted from the music playback device. Reading the additional information corresponding to the information acquisition code from the information storage means of the information management server; and transmitting the additional information read from the information storage means to the music playback device. It is a feature.

A computer-readable recording medium according to the present invention is a computer-readable recording medium on which a program for acquiring additional information, which is information associated with music data, from an information management server is recorded. Reading the information acquisition code from the music recording medium on which the information acquisition code is recorded, transmitting the information acquisition code to the information management server, and transmitting, from the information management server, additional information corresponding to the information acquisition code. And a program for causing a computer to execute the step of receiving the program.

Further, a computer-readable recording medium according to the present invention is a computer-readable recording medium recording a program for transmitting additional information to a music reproducing apparatus, wherein the information acquisition code transmitted from the music reproducing apparatus is provided. For causing a computer to execute the following steps: receiving, from the information storage unit, additional information corresponding to the information acquisition code, and transmitting the additional information read from the information storage unit to the music playback device. Is recorded.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 Hereinafter, a music playback device, an information acquisition method, an information management server, a control method thereof, and a music playback system according to Embodiment 1 of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the configuration of the music playback system according to the first embodiment. In FIG. 1, a music reproducing system includes a music reproducing apparatus 1 for reproducing a CD on which music data is recorded, a communication line 2, and information management for managing additional information which is information corresponding to the CD on which the music data is recorded. And a server 3.
As the communication line 2, for example, a public telephone line, a data communication line, a communication network, or the like is used.

The music reproducing apparatus 1 includes a reproducing unit 11, a music output unit 12, a control unit 13, a transmitting / receiving unit 14,
Storage means 15, recording means 16, information output means 17
And an instruction receiving unit 18. Information management server 3
Comprises a transmission / reception unit 31, an information management unit 32, and an information storage unit 33.

The reproducing means 11 reads and reproduces music data from a CD (hereinafter, referred to as "music information CD") on which music data, a decryption key, an information acquisition code, and a CD identifier are recorded, The reproduced music signal is output to the music output means 12. Further, when a music information CD is newly mounted on the music reproducing apparatus 1, a decryption key and a CD identifier are read and output to the control means 13. In addition, it receives music data from the control means 13 and outputs a reproduced music signal obtained by reproducing the music data to the music output means 12. Here, the information acquisition code is a code used when the music reproducing device 1 acquires, from the information management server 3, additional information that is information accompanying the music information CD. The CD identifier is an identifier used to identify the music information CD, and different CD identifiers are assigned to music information CDs having different contents.
The decryption key is a key used for decrypting the encrypted additional information obtained from the information management server 3.

The music output means 12 is an interface for outputting a reproduction music signal from the reproduction means 11 to the speaker 41. The control means 13 receives the decryption key from the reproduction means 11 and the CD identifier, stores the decryption key in an encryption key buffer (not shown) of the control means 13, and stores the CD identifier in the control means 13. It is stored in an identifier buffer (not shown). When the control means 13 receives a command to acquire additional information from the command receiving means 18, the control means 13 issues a command to acquire an information acquisition code from the music information CD to the reproducing means 11, and outputs the information from the reproducing means 11. The acquisition code is acquired, and the information acquisition code is output to the transmission / reception unit 14. When the additional information corresponding to the information acquisition code output to the transmission / reception means 14 is received from the transmission / reception means 14, the additional information is recorded in the storage means 15.

The control means 13 includes an instruction receiving means 18
Receives a command to output additional information from the user, outputs a list of additional information recorded in the storage means 15 to the information output means 17 and allows the user to select any of the additional information described in the list. When receiving the instruction from the instruction receiving unit 18, the corresponding additional information is output to the reproducing unit 11 or the information output unit 17.

The control means 13 includes an instruction receiving means 18
Receives a command to record the additional information from the storage device 15, outputs a list of the additional information recorded in the storage unit 15 to the information output unit 17, and allows the user to select any of the additional information described in the list. When the instruction reception unit 18 receives the notification of the completion, the corresponding additional information is output to the recording unit 16.

The instruction receiving means 18 sends the music information C
When receiving the command related to the control of D, the control unit outputs the command related to the control to the reproducing unit 11. The command related to the control of the music information CD includes, for example, a command to reproduce the music data recorded on the music information CD, a command to stop the reproduction of the music information CD, and the like.

The transmission / reception means 14 receives the information acquisition code from the control means 13 and transmits the information acquisition code to the information management server 3 via the communication line 2. Further, it receives the additional information transmitted from the information management server 3 and outputs it to the control unit 13. The storage unit 15 stores additional information input from the control unit 13 and the like. As the storage means 15, for example, a hard disk drive (HDD)
Or a memory.

The recording means 16 receives the additional information and the decryption key from the control means 13 and records them on a recording medium 43 detachable from the music reproducing apparatus 1. As the removable recording medium 43, for example, a nonvolatile memory such as a flash memory, a floppy disk, a magnetic disk, an optical disk, a magneto-optical disk, a DV
A D-RAM or the like is used. The information output unit 17 is an interface that receives information such as additional information input from the control unit 13 and outputs the information to the monitor 42.

The command receiving means 18 receives a command from the user for the music reproduction system, and outputs the command to the control means 13. As the command receiving means 18, for example, a keyboard used for a personal computer, a light receiving unit for receiving a signal from a remote controller, a touch panel or a solid button provided for operating a music playback system, and the like are used.

The transmitting / receiving means 31 receives the information acquisition code transmitted from the music reproducing apparatus 1 via the communication line 2,
The information is output to the information management means 32. Further, the information management means 32
And receives the additional information from the communication line 2.
Is transmitted to the music playback device 1 via the.

The information management means 32 receives the information acquisition code from the transmission / reception means 31, and determines whether or not the additional information corresponding to the information acquisition code exists in the information storage means 33. If the additional information corresponding to the information acquisition code exists in the information storage unit 33, the additional information is read from the information storage unit 33 and output to the transmission / reception unit 14.

The information storage means 33 stores the information acquisition code and the additional information in pairs. As the information storage unit 33, for example, an HDD or a memory is used.

FIG. 2 is a diagram showing an example of the information acquisition code and the additional information stored in the information storage means 33. In FIG. 2, for example, the information acquisition code “code 1” corresponds to the additional information “additional information A”. The “additional information A” includes an additional information list, artist information, music data not recorded on a CD, and compressed music data recorded on a CD. Here, the additional information list indicates a list of information included in “additional information A”.
The artist information is information about a singer or the like of a music recorded on a music information CD. For example, the singer's gravure, profile, singer's concert information, concert ticket priority acquisition information, singer's schedule, or new music information Etc. The music data not recorded on the CD is music data not recorded on the music information CD. The compressed music data recorded on a CD is data obtained by compressing music data recorded on a music information CD. As the compression method, for example, MP3 (MPEG1
Audio Layer3), MPEG-2 AAC (Advanced Audio
Coding) standard is used. Of these pieces of additional information, those other than the additional information list are encrypted and cannot be used unless the encryption is decrypted using a decryption key recorded on the music information CD.

Next, the operation of the music reproducing system according to the first embodiment will be described. When the music information CD in which the music data, the decryption key, the information acquisition code, and the CD identifier are recorded is stored in the music playback device 1, the playback unit 11 reads the decryption key, the CD identifier Is read and output to the control means 13. Control means 1
3 stores the decryption key and the CD identifier in an encryption key buffer (not shown) and an identifier buffer (not shown), respectively. When the information music CD is removed from the music reproducing device 1, the contents of the encryption key buffer and the identifier buffer are deleted.

First, the music reproducing apparatus 1 is connected to the information management server 3
An operation of acquiring additional information from a computer and an information acquisition method will be described. When the user transmits a command to acquire the additional information to the command receiving unit 18 using a remote controller or the like, the command receiving unit 18 outputs a command to acquire the additional information to the control unit 13.

FIG. 3 is a flowchart showing the operation of the music reproducing apparatus 1 after the control means 13 receives a command to acquire additional information. When receiving the command to acquire the additional information from the command receiving unit 18, the control unit 13 outputs a command to acquire the information acquisition code from the music information CD to the reproducing unit 11. And the reproducing means 11
Determines whether the information acquisition code is included in the music information CD (step S101), and if so, outputs the information acquisition code to the control means 13. If the music information CD does not include the information acquisition code, the operation of acquiring the additional information ends. Here, a case where “code 1” is recorded as an information acquisition code in the music information CD will be described.

When the control unit 13 receives the information acquisition code “code 1” from the reproduction unit 11, it outputs “code 1” to the transmission / reception unit 14. Then, the transmitting / receiving means 14
Transmits the information acquisition code "code 1" to the information management server 3 via the communication line 2 (step S102).

FIG. 4 is a flowchart showing the operation of the information management server 3 when receiving the information acquisition code from the music reproducing device 1. Transmission / reception means 31 of information management server 3
When receiving the information acquisition code “code 1” transmitted from the music playback device 1, the device outputs the “code 1” to the information management unit 32. Then, the information management unit 32 determines whether or not the additional information corresponding to “code 1” is recorded in the information storage unit 33 (Step S110). If the additional information is recorded, the process proceeds to Step S111. If not recorded, the process ends.

If the additional information corresponding to "code 1" has been recorded in the information storage means 33, the information management means 3
2 is a storage unit 15 for storing additional information corresponding to "code 1".
And outputs it to the transmission / reception means 31. For example,
When the additional information shown in FIG. 2 is recorded in the information storage means 33, the "additional information A" corresponding to "code 1"
Is output to the transmission / reception means 31, and the transmission / reception means 31 transmits the "additional information A" to the music reproduction device 1 via the communication line 2 (step S111), and ends the operation of the information management server 3.

The control means 13 of the music reproducing apparatus 1 determines whether the transmitting / receiving means 14 has received the additional information (step S103), and the transmitting / receiving means 14 determines whether the additional information from the information management server 3, for example, " If the additional information A ″ has been received, the process proceeds to step S104. On the other hand, if the transmission / reception unit 14 does not receive the additional information even after waiting for a predetermined time or more, that is, if the information storage unit 33 of the information management server 3 has no additional information corresponding to the information acquisition code, It ends. Here, it is assumed that the transmission / reception unit 14 has received “additional information A” as additional information.

Then, the control means 13 transmits to the transmission / reception means 14
, The additional information is recorded in the storage means 15 (step S104), and the operation of acquiring the additional information from the information management server 3 ends. The recording of the additional information by the control means 13 is performed by associating the CD identifier stored in the identifier buffer (not shown) with the additional information.

FIG. 5 is a diagram showing an example of a CD identifier recorded in the storage means 15 and additional information. As shown in FIG. 5, when the control unit 13 records “additional information A” in the storage unit 15 and the CD identifier “code 101” is stored in the identifier buffer, the control unit 13 executes “additional information A”. Information A "is stored in association with" Code 101 ".

Next, the operation of outputting the additional information acquired from the information management server 3 will be described. When the user transmits a command to output the additional information to the command receiving unit 18 via a remote controller or the like, the command receiving unit 18 outputs a command to the control unit 13 to output the additional information.

FIG. 6 is a flowchart showing the operation of the music reproducing apparatus 1 after the control means 13 receives a command to output additional information. First, the control unit 13 determines whether additional information is recorded in the storage unit 15 (Step S201). When the additional information is recorded, the control unit 13 reads out all the additional information lists included in the additional information recorded in the storage unit 15 from the storage unit 15 and outputs the list to the information output unit 17. . Then, the information output means 17 outputs the input additional information list to the monitor 42, and the monitor 42
All the additional information lists included in the additional information recorded in are displayed (step S202). Then, the user is instructed to select any information included in the additional information.

FIG. 7 is a diagram showing an example of the additional information list displayed on the monitor 42. For example, when the additional information shown in FIG. 5 is recorded in the storage unit 15, a list of the additional information shown in FIG. Note that “additional information A”, “artist information”, or “music data 1” are actually
The name of the additional information, the name of the artist, or the name of the music data is displayed on the monitor 42.

The user watching the monitor 42 is
2. Select any additional information from the additional information list displayed in 2. For example, when the user wants to select “artist information” of “additional information A”, the remote control transmits “1” to the command receiving unit 18 of the music reproducing apparatus 1 so that “additional information A” is transmitted. Select "Artist Information" by selecting and inputting "1" again. In this case, the command receiving unit 18 outputs the number of the additional information from the user to the control unit 13, so that the control unit 13 can detect the additional information selected by the user. If the user selects any of the additional information within a predetermined time, the control unit 13 determines that the additional information has been selected (step S203). If there is no selection from the user within the predetermined time, the process ends.

When the additional information is selected by the user, the control means 13 determines the CD identifier corresponding to the additional information selected by the user and the CD identifier stored in the identifier buffer.
The process compares the identifier with the identifier, and reads the additional information selected by the user from the storage unit 15 only when the identifiers match. Then, the additional information is decrypted with the decryption key stored in the encryption key buffer, and when the selected additional information is music data, the data is output to the reproducing means 11, and the selected additional information is stored in the artist information. In the case of such video data, it is output to the information output means 17. In this way, the user can listen to music that is not recorded on a CD through the speaker 41, or can watch an image such as an artist's gravure on the monitor 42.

Next, the operation of recording the additional information obtained from the information management server 3 on the removable recording medium 43 will be described. When the user sends a command for recording the additional information to the removable recording medium 43 to the command receiving unit 18 via a remote controller or the like, the command receiving unit 18 outputs the command to the control unit 13.

FIG. 8 is a flowchart showing the operation of the music reproducing apparatus 1 after the control means 13 receives a command to record additional information. The processing (steps S201 to S203) until the additional information is selected is described in FIG.
And the description is omitted.

When the user selects any information or data from the list shown in FIG. 7 displayed on the monitor 42, the control means 13 sets a CD identifier and an identifier corresponding to the additional information selected by the user. The process compares the CD identifier stored in the buffer and reads out the additional information from the storage unit 15 only when both match. Then, the read additional information is output to the recording means 16 together with the decryption key stored in the encryption key buffer. The recording unit 16 records the decryption key and the additional information in a pair on the removable recording medium 43 (step S301).

For example, the user transmits “1” and “4” to the command receiving means 18 of the music reproducing apparatus 1 by using the remote controller,
When the “added information A” “compressed music data recorded on CD” is selected, the compressed data of all the music data recorded on the music information CD is recorded on the removable recording medium 43. Then, the user can carry around the removable recording medium 43 in which the decryption key and the additional information are recorded, and attach the removable recording medium in which the additional information is recorded to a portable information terminal or the like (not shown). By attaching 43, music and the like recorded on the recording medium 43 can be heard.
Note that the decryption key recorded on the recording medium 43 is provided with a copy guard that the decryption key can be copied to another recording medium once or a predetermined number of times, or cannot be copied to another recording medium at all. You may.

Next, the operation of reproducing the music data of the music information CD will be described. When the user wants to reproduce the music data recorded on the music information CD, the user transmits a command relating to the reproduction of the music data to the command receiving means 18 by a remote controller or the like. The command receiving means 18 outputs the command to the control means 13. The control unit 13 analyzes the input command and outputs a command to the reproducing unit 11 to reproduce the music data recorded on the music information CD. Processing other than the reproduction of the music data of the music information CD, for example, the stop of the reproduction of the music or the selection of the music,
It can be performed in a similar manner.

As described above, according to the music reproduction apparatus 1, the information acquisition method, the information management server 3, the control method thereof, and the music reproduction system according to the first embodiment, the music information CD
Of the music information CD can be obtained from the information management server 3. When the compressed music data recorded on the CD is obtained as the additional information, an effect is obtained that the trouble of compressing the music data recorded on the music information CD can be omitted. Also,
It is checked whether the CD identifier corresponding to the additional information stored in the storage means 15 matches the CD identifier stored in the identifier buffer, and the music information CD corresponding to the additional information is stored in the music reproducing device 1. The additional information can be used only when the additional information is used, so that a user who does not own the music information CD can temporarily borrow the music information CD to obtain the additional information and use the additional information. Can be prevented. Furthermore, since the additional information is encrypted and the additional information cannot be used unless a decryption key is used, the additional information cannot be used even if only the additional information is illegally copied.

As described above, only the owner of the music information CD can use the additional information obtained from the information management server 3, so that the music data is distributed over the network in recent years. Although the sales of the recorded CD are decreasing, the music information C according to the first embodiment is reduced.
By using D, it is possible to prevent a decrease in sales.

In the first embodiment, the comparison between the CD identifier corresponding to the additional information and the CD identifier stored in the identifier buffer is performed when the additional information is output or when the additional information is recorded. However, this is merely an example. For example, when the control unit 13 performs control other than the above, the comparison may be performed. Alternatively, music data that is not recorded on a CD as additional information may be reproduced. During this period, the comparison is performed at predetermined time intervals. If the CD identifier corresponding to the music data is different from the CD identifier stored in the identifier buffer, the music reproduction is terminated halfway. Is also good.

As the additional information, music information such as the title of the music recorded on the music information CD, the name of the lyric composer, or the lyrics data may be used. It goes without saying that the present invention is not limited to those described.

In the first embodiment, the CD identifier is stored in the identifier buffer of the control means 13. However, this is merely an example. Instead of comparing the CD identifier corresponding to the information with the CD identifier stored in the identifier buffer, the CD identifier corresponding to the additional information and the music information CD are compared.
May be directly compared with the CD identifier recorded in the.

Also, the music information CD purchased by the user,
The additional information that can be obtained may be different from the music information CD rented from the rental shop by the user. That is, the information acquisition code is different between the purchased music information CD and the rented music information CD, and the information acquisition code of the purchased music information CD is used to store more or valuable additional information. You should be able to get it.

As to the additional information obtained from the rented music information CD, when outputting or recording the additional information, a comparison is made between the CD identifier corresponding to the additional information and the CD identifier stored in the identifier buffer. Shall not be performed. Normally, the user only needs a music information CD for a certain period of time.
Is rented, and the music information CD is not owned. Further, in the case of a rented music information CD, a decryption key recorded on the music information CD may be recorded in the storage means 15, or additional information corresponding to the rented music information CD may be: It may not be encrypted from the beginning.

Also, in the first embodiment, the CD identifier corresponding to the additional information and the CD identifier stored in the identifier buffer
The comparison with the identifier was performed, but this is an example,
For example, a similar effect can be obtained by comparing the information acquisition code corresponding to the additional information with the information acquisition code recorded on the music information CD.

In the first embodiment, the music reproducing apparatus 1 acquires additional information from the information management server 3 according to a command from the user. However, this is only an example. As soon as the music information CD is stored in the device 1, additional information corresponding to the music information CD may be acquired from the information management server 3, and the timing of acquiring the additional information is not limited thereto.

In the first embodiment, the additional information includes the additional information list indicating the content of the additional information. However, this is merely an example. For example, the additional information includes the additional information list. The control means 13 does not
5 may be configured to refer to the additional information recorded in 5 and create an additional information list and output the list to the information output unit 17.

A recording medium 43 to which additional information can be attached and detached is provided.
, The music data not recorded on the music information CD may not be recorded on the removable recording medium 43. By doing so, the music data not recorded on the CD can be reproduced only by the music reproducing device 1 by the user who owns the music information CD.

The music information CD on which the music data and the information acquisition code are recorded may be a DVD or the like.
The recording medium is not limited to any recording medium that can record music data.

In the first embodiment, the compressed music data recorded on the CD corresponds to all the music data recorded on the music information CD. However, the compressed music data recorded on the CD is It may be compressed data corresponding to some music data recorded on a CD.

In the first embodiment, the additional information received from the information management server 3 is recorded in the storage unit 15 before being output. However, this is an example. The additional information received from the server may be directly output to the outside of the music reproducing device 1, or may be directly recorded on the removable recording medium 43.

In the first embodiment, when information is recorded on the removable recording medium 43, the information is recorded together with the decryption key. However, this is an example, and the decryption key is It may be managed separately from the recording medium 43.

Further, in the first embodiment, the additional information transmitted from the information management server 3 is assumed to be encrypted to prevent unauthorized copying. Additional information that is not converted may be transmitted from the information management server 3.

Although the music reproducing apparatus 1 according to the first embodiment is described as a set-top box constituted by hardware, it may be provided with a monitor, a speaker, or the like, or may be provided with a personal computer or a work computer. The station may be configured by software under program control.

Each component of the information management server 3 according to the first embodiment may be constituted by software under program control, or may be constituted by hardware.

A recording medium storing a program for realizing the information acquisition method according to the first embodiment is supplied to a system or an apparatus, and a main processing unit such as a CPU of the system or the apparatus stores the recording medium in the recording medium. By reading and executing the stored program, the same effect as that described in the first embodiment can be obtained.

As a recording medium for recording a program, for example, a floppy disk, a hard disk,
Optical disk, magnetic disk, magneto-optical disk, CD-R
An OM, a DVD-RAM, a magnetic tape, a nonvolatile memory card, a ROM, or the like can be used.

[0073]

As is apparent from the above description, the music reproducing apparatus, the information acquisition method, the information management server,
According to the control method and the music reproduction system, the user who is the owner of the music information CD can purchase the music information from the information management server without purchasing a new music CD or acquiring the information via the Internet or the like. The effect is obtained that the additional information attached to the CD can be automatically obtained. Further, when compressed music data recorded on a CD is obtained as the additional information, the effect of reducing the labor and time for compressing the music data recorded on the music information CD can be obtained.

Further, it is checked whether or not the CD identifier corresponding to the additional information stored in the storage means matches the CD identifier stored in the identifier buffer, and the music information CD corresponding to the additional information is stored in the music reproducing apparatus. The user who does not own the music information CD can temporarily borrow the music information CD to obtain the additional information and use the additional information only when the additional information is stored in the music information CD. Can be prevented.

When the music information CD is rented, the user does not compare the CD identifier corresponding to the additional information with the CD identifier stored in the identifier buffer. Even after returning the CD to the rental shop, the additional information obtained from the music information CD rented by the user can be used.

Further, since the additional information is encrypted and the additional information cannot be used unless the decryption key is used, even if only the additional information is illegally copied,
The additional information cannot be used.

As described above, only the owner or renter of the music information CD obtains the additional information from the information management server and makes it available, so that music data has recently been distributed over networks such as the Internet. Accordingly, it is possible to prevent the sales of CDs on which music data is recorded from decreasing.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a music reproduction system according to a first embodiment of the present invention.

FIG. 2 is a diagram illustrating an example of an information acquisition code and additional information stored in an information storage unit according to the first embodiment of the present invention.

FIG. 3 is a flowchart showing an operation of the music playback device according to the first embodiment of the present invention.

FIG. 4 is a flowchart showing an operation of the information management server according to the first embodiment of the present invention.

FIG. 5 is a diagram showing an example of a CD identifier and additional information recorded in a storage unit according to the first embodiment of the present invention.

FIG. 6 is a flowchart showing an operation of the music reproducing device according to the first embodiment of the present invention.

FIG. 7 is a diagram showing an example of an additional information list displayed on a monitor according to the first embodiment of the present invention.

FIG. 8 is a flowchart showing an operation of the music reproducing device according to the first embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 music playback device 2 communication line 3 information management server 11 playback means 12 music output means 13 control means 14, 31 transmission / reception means 15 storage means 16 recording means 17 information output means 18 command reception means 32 information management means 33 information storage means

Claims (16)

[Claims] 1. A music reproducing apparatus for acquiring additional information from an information management server which manages additional information which is information associated with music data, comprising: a music recording medium on which music data and an information acquisition code are recorded. A reproducing unit for reproducing, a control unit for acquiring the information acquisition code from the reproducing unit, and transmitting the information acquisition code acquired by the control unit to the information management server via a communication line. A transmission / reception unit that receives additional information corresponding to the information acquisition code. 2. The music reproducing apparatus according to claim 1, further comprising a storage unit for storing the additional information received by said transmission / reception unit. 3. The music playback device according to claim 1, further comprising a recording unit that records the additional information received by the transmission / reception unit on a removable recording medium. 4. The music reproducing apparatus according to claim 1, wherein a decryption key is also recorded on the music recording medium, and the additional information received by the transmitting / receiving means from the information management server. Is encrypted, and the control means decrypts the encryption of the additional information with the decryption key. 5. The music reproducing apparatus according to claim 3, wherein a decryption key is also recorded on the music recording medium, and the additional information received by the transmitting / receiving means from the information management server is encrypted. A music reproducing apparatus, wherein the recording means records a decryption key corresponding to the additional information on a removable recording medium together with the additional information. 6. The music playback device according to claim 1, wherein the control unit checks whether or not the music recording medium used to acquire the additional information is stored in the music playback device. A music reproducing apparatus for performing processing on additional information only when the music recording medium is stored. 7. The music playback device according to claim 6, wherein the control unit checks at predetermined time intervals whether the music recording medium used for acquiring the additional information is stored in the music playback device. A music playback device characterized by: 8. The music reproducing device according to claim 1, wherein an information acquisition code recorded on the music recording medium differs between the purchased music recording medium and the rented music recording medium. The above-mentioned transmission / reception means receives different additional information for a purchased music recording medium and a rented music recording medium. 9. An information management server for transmitting additional information to a music playback device, the information management server receiving an information acquisition code from the music playback device, and transmitting the additional information corresponding to the information acquisition code to the music playback device. Transmitting / receiving means, an information storage means for storing the information acquisition code and the additional information in pairs, and when the additional information corresponding to the information acquisition code received by the transmission / reception means is recorded in the information storage means, An information management server comprising: information management means for reading additional information from the information storage means and outputting the additional information to the transmission / reception means. 10. A music playback system comprising: an information management server that manages additional information that is information associated with music data; and a music playback device that acquires additional information from the information management server. Reproducing means for reproducing a music recording medium on which music data and an information acquisition code are recorded; control means for acquiring the information acquisition code from the reproduction means; and communicating the information acquisition code acquired by the control means with a communication line. And a first transmitting / receiving means for transmitting to the information management server via the information management server and receiving additional information corresponding to the information acquisition code from the information management server, wherein the information management server obtains information from the music playback device. A second transmitting / receiving means for receiving the code and transmitting additional information corresponding to the information acquisition code to the music reproducing apparatus; Information storage means for storing information as a pair, and when the additional information corresponding to the information acquisition code received by the transmission / reception means is recorded in the information storage means, reads the additional information from the information storage means. And a data management means for outputting to the second transmission / reception means. 11. An information acquisition method for acquiring additional information, which is information associated with music data, from an information management server, wherein the information acquisition code is read from a music recording medium on which the music data and the information acquisition code are recorded. An information acquisition method, comprising: transmitting the information acquisition code to the information management server; and receiving additional information corresponding to the information acquisition code from the information management server. 12. The information acquisition method according to claim 11, further comprising a step of recording the additional information received from the information management server. 13. The information acquisition method according to claim 12, wherein the additional information is recorded on a removable recording medium. 14. A method for controlling an information management server for transmitting additional information to a music playback device, comprising: receiving an information acquisition code transmitted from the music playback device; Reading from the information storage means of the information management server; and transmitting the additional information read from the information storage means to the music playback device. 15. A computer-readable recording medium recording a program for acquiring additional information, which is information associated with music data, from an information management server, wherein the computer-readable recording medium stores music data and an information acquisition code. A program for causing a computer to execute the steps of: reading the information acquisition code; transmitting the information acquisition code to the information management server; and receiving additional information corresponding to the information acquisition code from the information management server. A computer-readable recording medium on which is recorded. 16. A computer-readable recording medium having recorded thereon a program for transmitting additional information to a music reproducing apparatus, the method comprising: receiving an information acquisition code transmitted from the music reproduction apparatus; A computer-readable recording medium storing a program for causing a computer to execute a step of reading corresponding additional information from an information storage unit and a step of transmitting the additional information read from the information storage unit to the music reproducing device.