JP2007004886A - Management information acquiring apparatus and management information acquiring program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To automatically acquire the management information of a recording medium whereon data of registered group and data not included in this group are recorded. <P>SOLUTION: This apparatus is equipped with: an acquisition means for acquiring the management information from a CDDB server 40 on the basis of at least a part of the content information; a read-out means for reading the first contents information from the recording medium; a first acquisition control means for making the acquisition means to acquire the first management information based on the first content information; a second acquisition control means for making the acquisition means to acquire the second management information based on the second content information to be formed for remained data obtained by removing one or more data from whole data of the recording medium when the first management information cannot be acquired; and a third acquisition control means for making the acquisition means to acquire a third management information of the data based on a third content information to be formed for data corresponding to the acquired second management information and also corresponding to other than the second content information of the recording medium. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a management information acquisition apparatus and a management information acquisition program.

  2. Description of the Related Art Conventionally, a reproducing apparatus that reproduces digital audio data recorded on a music CD (Compact Disc) has been implemented. In addition, a CDDB (CD DataBase) server device (CDDB server) that stores music information relating to tracks recorded on a CD in a distributable manner is implemented. The music information includes, for example, information related to the album such as an album name and information related to the track such as the music name of each track and the artist name.

  When a CD is set, the CD player compatible with CDDB communicates and connects to a CDDB server via the Internet or the like, searches for and downloads music information based on the TOC (Table Of Contents) information of the set CD. Store in the storage unit.

  For example, when dubbing from a CD to an MD (Mini Disc), a communication connection is established with the CDDB server, the music information of the dubbing source CD is searched and downloaded, and the audio data of that track is recorded on the dubbing destination MD. The structure is considered (for example, refer patent document 1).

The music information managed by the CDDB is registered on the CDDB server side by any user using a PC (Personal Computer), CDDB compatible device, etc., to input the music information of the owned CD and upload it to the CDDB server. Is done.
JP 2002-269903 A

  However, in the conventional configuration, management information (music information) of data (tracks) recorded on the recording medium (CD) may not be downloaded from the database (CDDB). For example, a recording medium such as a CD-R (CD Recordable) created by a user writing an arbitrary track cannot be searched because the music information on the disc is not registered in the CDDB, but the user has selected a predetermined album. Even when an arbitrary track is added and recorded on the disc, there is a problem that the music information of the predetermined album cannot be downloaded.

  Furthermore, music information that cannot be downloaded from the CDDB can be registered in the playback device by an operation input, but there is a problem that the operation burden on the user increases.

  Further, for example, even when music information of a predetermined album is registered in the CDDB, the music information cannot be downloaded for a CD on which a bonus track is written in addition to the normal track of the album. was there.

  An object of the present invention is to automatically acquire management information of a group registered in a database and data not included in the group recorded in a recording medium.

In order to solve the above-mentioned problem, the invention described in claim 1
An acquisition means for acquiring management information based on at least a part of the table of contents information from a database means for registering management information of a plurality of data in a data unit and a group unit of the data;
Reading means for reading out the first table of contents information of the recorded data from a recording medium on which a plurality of data is recorded;
First acquisition control means for causing the acquisition means to acquire the first management information of the first group based on the first table of contents information read by the reading means;
It is determined whether or not the first management information has been acquired by the acquisition means, and if it is determined that the first management information cannot be acquired, at least one of all data corresponding to the first table of contents information is obtained. A second table of contents information relating to the remaining data from which the two pieces of data have been removed is generated, and the acquisition unit acquires second management information of the second group based on the generated second table of contents information. Acquisition control means;
It is determined whether or not the second management information has been acquired by the acquisition means, and when it is determined that the second management information has been acquired, the first management information corresponds to the second management information and the first Third index information relating to data other than data corresponding to the second table of contents information among all data corresponding to the table of contents information is generated, and the third table of the data is generated based on the generated third table of contents information. Third acquisition control means for causing the acquisition means to acquire management information of:
A management information acquisition device comprising:

The invention according to claim 2 is the management information acquisition device according to claim 1,
The second and third management information has items,
When it is determined that the second management information has been acquired, the third acquisition control unit has the same items as the second management information and all data corresponding to the first table of contents information The third table of contents information relating to data other than the data corresponding to the second table of contents information is generated.

The invention according to claim 3 is the management information acquisition device according to claim 1 or 2,
A display means for displaying at least one of the acquired first, second and third management information is provided.

The invention according to claim 4 is the management information acquisition device according to any one of claims 1 to 3,
The second acquisition control means relates to the remaining data obtained by removing one unremoved data from all data corresponding to the first table of contents information when it is determined that the first management information cannot be acquired. The second table of contents information is generated, and the acquisition unit acquires the second management information of the second group based on the generated second table of contents information.

The invention according to claim 5 is the management information acquisition device according to any one of claims 1 to 4,
When it is determined that the second management information has been acquired, the third acquisition control unit corresponds to the second management information and the data of all the data corresponding to the first table of contents information. One unselected data other than the data corresponding to the second table of contents information is selected, third table of contents information about the selected data is generated, and the data of the data is generated based on the generated third table of contents information. The third management information is repeatedly acquired by the acquisition unit.

The invention according to claim 6 is the management information acquisition device according to any one of claims 1 to 5,
A selection input unit that receives a selection input of one third management information from the plurality of third management information when a plurality of third management information is acquired by the acquisition unit;
Registration means for registering the third table information and the second table of contents information in the database unit in association with the third management information selected by the selection input unit and the acquired second management information; ,
It is characterized by providing.

The invention described in claim 7
On the computer,
A function of reading first table of contents information of the recorded data from a recording medium on which a plurality of data is recorded;
The first management information of the first group is obtained based on at least a part of the read first table of contents information from the database means for registering management information of a plurality of data in units of data and groups of the data. The ability to get and
It is determined whether or not the first management information has been acquired. If it is determined that the first management information cannot be acquired, at least one data is removed from all data corresponding to the first table of contents information Generating the second table of contents information on the remaining data, and acquiring the second management information of the second group from the database means based on at least a part of the generated second table of contents information;
It is determined whether or not the second management information has been acquired, and when it is determined that the second management information has been acquired, the second management information corresponds to the second management information and the first table of contents information Generating third table of contents information related to data other than the data corresponding to the second table of contents information of all the data to be generated, and from the database means based on at least a part of the generated third table of contents information A function of acquiring third management information of data;
It is a management information acquisition program for realizing the above.

  According to the present invention, it is possible to automatically acquire management information of a group registered in a database and data not included in the group recorded on a recording medium.

  Embodiments according to the present invention will be described below in detail with reference to the accompanying drawings. However, the scope of the invention is not limited to the illustrated examples.

  First, the device configuration of the playback device 100 of the present embodiment will be described with reference to FIG. FIG. 1 shows the configuration of the playback apparatus 100.

  As shown in FIG. 1, a playback apparatus 100 as a management information acquisition apparatus according to the present embodiment is an apparatus that plays back audio data recorded on a CD as a recording medium. The playback apparatus 100 includes a system controller 10, an operation unit 11 as a selection input unit, a display unit 12, a microcontroller 13, a RAM (Random Access Memory) 14, a flash memory 15, a communication unit 16, and a bus master. A controller 17, an HDD (Hard Disk Drive) 18, a CD drive 19 as a reading means, a decoder 20, a DA converter 21, and an audio output terminal 22 are configured.

  The microcontroller 13, the bus master controller 17 and the decoder 20 are connected to the bus B1, and the bus master controller 17, the HDD 18 and the CD drive 19 are connected to the bus B1.

  Further, the playback apparatus 100 is communicatively connected to the CDDB server 40 on the communication network N such as the Internet via the HUB 30 and the router 31.

  On the CD, audio data (music data) is recorded in units of tracks, and TOC information regarding each data of these tracks is recorded. The CDDB server 40 includes a storage unit 41 and stores (registers) music information of various CDs in the storage unit 41. The music information includes information related to the album of each CD and information related to the track of each track of the CD. The information about the album includes the title name, artist name, genre, (record) label name, and the like of the album. Information about the track includes the title name, artist name, genre, etc. of the track.

  When the CDDB server 40 receives a music information request for a CD from a device such as the playback device 100 via the communication network N, the CDDB server 40 reads the music information corresponding to the music information request from the storage unit and transmits it to the requesting device.

  The system controller 10 includes a microprocessor and the like, directly controls the operation unit 11 and the display unit 12, and centrally controls each unit of the playback device 100 via the microcontroller 13. The system controller 10 includes a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), and the like. The CPU reads a specified program from the system programs and various application programs stored in the ROM, expands them in the RAM, and executes various processes in cooperation with the programs expanded in the RAM. The ROM stores a music information acquisition program to be described later.

  The system controller 10 functions as first, second, and third acquisition control means in cooperation with the above program, and also functions as acquisition means and registration means together with the communication unit 16. Further, the system controller 10 cooperates with the music information acquisition program, based on the TOC information as the first table of contents information read from the CD, from the CDDB server 40 to all the tracks as the first group. Based on the TOC information as the second table of contents information of the second group of tracks excluding one track from all the tracks when the music information is acquired as the first management information and the music information is not acquired Then, the music information as the second management information of the track excluding one track is acquired from the CDDB server 40.

  In addition, when the music information of a track other than one track is acquired in cooperation with the music information acquisition program, the system controller 10 records the number of additional tracks recorded on the CD other than the acquired music information. Based on the TOC information as the third table of contents information, the music information as the third management information of the additional track is acquired from the CDDB server 40.

  The operation unit 11 includes an operation panel having various keys such as a stop key, a reproduction key, a fast-rewind key, a fast-forward key, a character input key, and a numeric input key. Operation information input by the user is input to the system controller 10. Output to.

  The display unit 12 is composed of an LCD (Liquid Crystal Display), an ELD (ElectroLuminescent Display) panel, and the like. Under the control of the system controller 10, information on operations such as playback, music information of a CD set in the CD drive 19, etc. Display information.

  The microcontroller 13 is composed of a microprocessor or the like, and controls each part of the playback device 100 under the control of the system controller 10. The microcontroller 13 includes a CPU and a ROM (not shown), and a program stored in the ROM is read out by the CPU and expanded in the RAM 14, and in cooperation with the CPU and the program expanded in the RAM 14, Perform various processes.

  The RAM 14 is a volatile memory and temporarily stores various data. The flash memory 15 is a non-volatile memory and stores various data in a readable and writable manner.

  The bus master controller 17 controls communication between the bus B1 and the bus B2. The HDD 18 stores various data in a readable and writable manner.

  The CD drive 19 includes a spindle motor that rotates the set CD, an optical pickup that reads the signal of the set CD, an RF amplifier that amplifies the signal read from the CD and performs various arithmetic processes, and the like. Thus, a signal such as music data is output from the set CD.

  The decoder 20 decodes the signal read by the CD drive 19 to generate digital audio data. The DA converter 21 converts the digital audio data output from the decoder 20 into an analog audio signal. The audio output terminal 22 outputs an audio signal output from the DA converter 21 to a speaker, an earphone or the like connected through an amplifier (not shown). Then, sound is output from the speaker or the like.

  Next, an example of a CD in which music information is not registered in the CDDB server 40 will be shown with reference to FIG. FIG. 2A shows a configuration of the CD 50 in which the bonus track is added after the normal track. FIG. 2B shows a configuration of the CD 60 in which the bonus track is added before the normal track. Music information is usually searched using the playback time of all tracks on a CD as a key.

  As shown in FIG. 2A, it is assumed that a bonus track BT11 of track number 11 is recorded on the CD 50 as an additional track after the normal tracks T1 to T10 of track numbers 1 to 10. In this CD 50, the music information of the normal tracks T1 to T10 as one album is registered in the CDDB server 40, and the music information of the normal tracks T1 to T10 and the bonus track BT11 is not registered as one album. I can't download.

  Further, as shown in FIG. 2B, it is assumed that a bonus track BT1 of track number 1 is recorded on the CD 60 as an additional track before the normal tracks T12 to T21 of track numbers 2 to 11. In this CD 60, the music information of the normal tracks T12 to T21 as one album is registered in the CDDB server 40, and the music information of the bonus track BT1 and the normal tracks T12 to T21 is not registered as one album. I can't download.

  Next, the operation of the playback device 100 will be described with reference to FIGS. FIG. 3 shows the flow of the music information acquisition process. FIG. 4 shows the flow of the music information acquisition process continued from FIG.

  The music information acquisition process executed by the playback apparatus 100 will be described. In the music information acquisition process, the music information of the normal track of the album part of the CD set in the CD drive 19 is searched and downloaded from the CDDB server 40, and the music information of the track not included in the album of the CD is searched. Download and display the music information.

  For example, the system controller 10 reads a music information acquisition program that is read from the ROM and appropriately expanded on the RAM, triggered by an input of a music information acquisition processing execution instruction from the user via the operation unit 11. The music information acquisition process is executed in cooperation with the CPU.

  Assume that a CD to be reproduced is set in the CD drive 19 in advance. Further, it is assumed that n (n: an arbitrary natural number) tracks and TOC information are recorded on the set CD (referred to as a set CD). The TOC information is information for managing the tracks recorded on the CD, and includes information such as the number of tracks, the track number of each track, the reproduction time (track length), the start position, and the data size. In this embodiment, the TOC information used for music information search is the total playback time of one or more tracks to be searched.

  First, TOC information is read from the set CD to the CD drive 19 (step S11). Then, based on the TOC information read out in step S11, a request for music information of the CDDB of the set CD is generated and transmitted to the CDDB server 40 via the communication unit 16, the HUB 30, the router 31, and the communication network N. In the CDDB server 40, the requested music information is searched from the music information stored in the storage unit 41 (step S12). Specifically, for example, the playback time of all tracks of the set CD is included in the request for music information. In the CDDB server 40, based on the received all-track playback time, the music information of the album having the same all-track playback time is searched from the storage unit 41, and when searched, the searched music information is stored in the playback device 100. If it is transmitted and not searched, information indicating that the search has not been performed is transmitted to the playback apparatus 100, and each piece of information is received by the playback apparatus 100.

  Then, in step S12, it is determined whether or not the music information of the CDDB corresponding to the set CD has been retrieved and received from the CDDB server 40 (step S13). When the CDDB music information corresponding to the set CD is received (step S13; YES), the CDDB music information corresponding to the set CD received via the communication unit 16 is stored in the RAM 14 (step S14).

  And the music information stored in RAM14 is displayed on the display part 12 (step S15), and a music information acquisition process is complete | finished.

  When the CDDB music information corresponding to the set CD is not received (step S13; NO), it corresponds to the tracks of track numbers 1 to (n-1) of the set CD based on the TOC information read in step S11. A request for music information in the CDDB including TOC information is generated and transmitted to the CDDB server 40 via the communication unit 16 or the like, and the requested music information is retrieved from the music information stored in the storage unit 41. (Step S16). In step S16, as in step S12, when the music information is searched, the searched music information is transmitted from the CDDB server 40 to the playback device 100. When the music information is not searched, information indicating that the search could not be performed. The information is transmitted to the playback device 100 and received by the playback device 100.

  In step S16, it is determined whether or not music information in the CDDB corresponding to the tracks of track numbers 1 to (n-1) of the set CD is retrieved and received from the CDDB server 40 (step S17). When the music information of CDDB corresponding to the tracks of track numbers 1 to (n−1) of the set CD is received (step S17; YES), the track numbers 1 to ((CD) of the set CD received via the communication unit 16). The artist name of the CDDB music information corresponding to the track of n-1) is acquired, and the artist name is transmitted to the CDDB server 40 via the communication unit 16 or the like, and the music of another album whose artist name matches. Information is retrieved from the music information stored in the storage unit 41 (step S18). Specifically, in the CDDB server 40, the music information of the corresponding album is retrieved from the storage unit 41 based on the received artist name, and when retrieved, information indicating that the retrieval has been performed is transmitted to the playback device 100. If the search is not performed, information indicating that the search could not be performed is transmitted to the playback apparatus 100, and each piece of information is received by the playback apparatus 100.

  Then, it is determined whether or not the fact that the album has been searched in step S18 is received from the CDDB server 40 (step S19). When the album is searched (step S19; YES), the TOC corresponding to the track (additional track) of the track number n of the set CD in the album searched in step S18 based on the TOC information read in step S11. A request for CDDB music information including information is generated and transmitted to the CDDB server 40 via the communication unit 16 or the like, and the CDDB server 40 stores the requested music information in the storage unit 41. (Step S20). Specifically, for example, the playback time of track number n is included in the request for music information. In the CDDB server 40, based on the received playback time, the music information of the track having the same playback time in the album searched in step S18 is searched from the storage unit 41. Is transmitted to the playback apparatus 100 and is not searched, information indicating that the search was not possible is transmitted to the playback apparatus 100, and each piece of information is received by the playback apparatus 100.

  Then, in step S20, it is determined whether or not the music information of the track with the track number n is retrieved and received from the CDDB server 40 (step S21). When the music information of the track number n is received (step S21; YES), the music information of the track numbers 1 to (n-1) acquired in step S16 and the track number n acquired in step S20. The music information of the set CD is created from the music information of the track and stored in the RAM 14 (step S22), and the process proceeds to step S15.

  When the album is not searched in step S18 (step S19; NO), or when the music information of the track with the track number n is not received in step S20 (step S21; NO), the track numbers 1 to (n−) acquired in step S16. The music information of the set CD is created from the music information of the track 1) and stored in the RAM 14 (step S23), and the process proceeds to step S15.

  If the CDDB music information corresponding to the tracks of track numbers 1 to (n-1) of the set CD is not searched (step S17; NO), the track number of the set CD is based on the TOC information read in step S11. A request for CDDB music information including TOC information corresponding to tracks 2 to n is generated and transmitted to the CDDB server 40 via the communication unit 16 and the like, and the requested music information is stored in the storage unit 41. The music information is searched for (step S24). In step S24, as in step S12, when music information is searched, the searched music information is transmitted from the CDDB server 40 to the playback device 100. The information is transmitted to the playback device 100 and received by the playback device 100.

  Then, in step S24, it is determined whether or not the CDDB music information corresponding to the tracks of track numbers 2 to n of the set CD has been retrieved and received from the CDDB server 40 (step S25). When the CDDB music information corresponding to the tracks of track numbers 2 to n of the set CD is received (step S25; YES), it corresponds to the tracks of track numbers 2 to n of the set CD received via the communication unit 16 The artist name of the music information of the CDDB to be acquired is acquired, the artist name is transmitted to the CDDB server 40 via the communication unit 16 and the like, and the music information of other albums whose artist names match is stored in the storage unit 41. The music information is searched for (step S26). In step S26, as in step S18, when the music information of the album is searched, information indicating that the search has been performed is transmitted from the CDDB server 40 to the playback device 100. Is transmitted to the playback apparatus 100, and each piece of information is received by the playback apparatus 100.

  Then, it is determined whether or not the fact that the album is searched in step S26 is received from the CDDB server 40 (step S27). When the album is searched (step S27; YES), based on the TOC information read in step S11, it corresponds to the track (additional track) of track number 1 of the set CD corresponding to the album searched in step S26. The CDDB music information request including the TOC information to be generated is generated and transmitted to the CDDB server 40 via the communication unit 16 or the like. The CDDB server 40 stores the requested music information in the storage unit 41. (Step S28). In step S28, as in step S20, when the music information of the track with track number 1 is searched, the searched music information is transmitted from the CDDB server 40 to the playback device 100, and if it is not searched, it can be searched. Information indicating that there was no information is transmitted to the playback apparatus 100, and each piece of information is received by the playback apparatus 100.

  Then, in step S28, it is determined whether or not the music information of the track with track number 1 is retrieved and received from the CDDB server 40 (step S29). When the music information of the track of track number 1 is retrieved in step S28 (step S29; YES), the music information of the track of track number 1 acquired in step S28 and the tracks of track numbers 2 to n acquired in step S24. The music information of the set CD is created from the music information and stored in the RAM 14 (step S30), and the process proceeds to step S15.

  If the album is not searched in step S26 (step S27; NO), or if the music information of the track with track number 1 is not received in step S28 (step S29; NO), the tracks with track numbers 2 to n acquired in step S24 The music information of the set CD is created from the music information of and stored in the RAM 14 (step S31), and the process proceeds to step S15.

  If the CDDB music information corresponding to the tracks of track numbers 2 to n of the set CD is not searched (step S25; NO), the fact that there is no music information of the acquired set CD is displayed on the display unit 12 (step S32). The music information acquisition process ends.

  The music information acquired (downloaded) by the playback device 100 may be stored in the flash memory 15 and the HDD 18 to form a CDDB for the playback device 100. Further, the case of using a CD to which a bonus track is added has been described, but the same applies to the case of using a CD created by the user.

  As described above, according to the present embodiment, the music information of the tracks of track numbers 1 to (n−1) is registered even when the music information of the tracks of track numbers 1 to n is not registered as an album. In this case, the music information of the track number 1 to (n-1) and the additional track number n corresponding to the same artist name as the track number 1 to (n-1) is downloaded from the CDDB server 40. Can be obtained automatically. Similarly, when the music information of the tracks of track numbers 2 to n is registered, track number 1 corresponding to the same artist name as the tracks of track numbers 2 to n is added together with the tracks of track numbers 2 to n Music information with a track can be downloaded from the CDDB server 40 and automatically acquired.

  Moreover, since the acquired music information is displayed on the display part 12, a user can confirm music information visually.

  The description in the above embodiment is an example of the management information acquisition apparatus and the management information acquisition program according to the present invention, and the present invention is not limited to this.

  For example, in the music information acquisition process, when the music information of the tracks of track numbers 1 to n is not registered as an album, the tracks of track numbers 1 to (n−1) (track removal of track number n) or track numbers Although the music information of tracks 2 to n (track removal of track number 1) is searched, the present invention is not limited to this. For example, when music information of track numbers 1 to i (i: natural value satisfying initial value (n−1), 2 ≦ i) is not searched, i ← (i−1) is set to music of track numbers 1 to i. It is good also as a structure which repeats searching information (maximum track removal of the tracks which were not searched) until music information is searched.

  Also, for example, when music information of track numbers j to n (j: (j: natural number satisfying initial value 2, j ≦ (n−1)) is not searched, j ← (j + 1) is set as track numbers j to It is good also as a structure which repeats searching the music information of n (minimum track removal of the track | trucks which were not searched) until music information is searched. A configuration may be adopted in which music information of a track is searched by combining the minimum track removal of a track that has not been searched.

  In response to this, when music information of a plurality of additional tracks is searched, one unselected track is selected from all the additional tracks, and the music information of the selected track is repeatedly acquired. Thus, the music information of all the additional tracks may be acquired.

  In addition, when a plurality of pieces of music information are searched in steps S20 and S28 of the music information acquisition process, the track names of the pieces of music information are acquired from the CDDB server 40 and displayed in a list on the display unit 12, It is good also as a structure which selects and acquires suitable music information by the selection input via the operation part 13 from a user. Further, in the playback apparatus 100, the music information of tracks 1 to n acquired in steps S22 and S31 in the music information acquisition process is associated with the TOC information, and the CDDB server 40 is connected via the communication unit 15 and the communication network N. It is good also as a structure which transmits to CDDB registration. According to this configuration, the user's operation burden can be reduced without the user inputting characters in the music information, and CD music information in which an additional track is added to the normal track of the album can be registered in the CDDB.

  Further, in steps S18 and S26 of the music information acquisition process, the artist name is used as a key as an item of the downloaded music information, and the music information of the track having the same playback time is searched using the same key. Instead of this, other items such as genre name and label name may be used.

  In the music information acquisition process, S20 and S28 are executed after steps S18 and S26, respectively. However, the present invention is not limited to this, and the nth TOC information is sent to the CDDB server so that a plurality of music can be obtained. When a hit occurs, music information such as a track name corresponding to the artist name of the music information obtained from No. 1 to (n-1) may be acquired. In this case, prior to the acquisition of the music information, the user may select the music information to be acquired.

  In addition, although the music information acquisition process has been described as being executed by the playback apparatus 100, the present invention is not limited to this, and the configuration for realizing the music information acquisition process by CDDB creation software such as a PC having a CD drive, etc. It is good. The music information acquisition apparatus may be another apparatus such as a PC having a recording medium reading unit.

  Further, although the CD is used as the recording medium, the present invention is not limited to this. For example, optical information recording media such as MD, CD-R / RW (Recordable / ReWritable), DVD (Digital Versatile Disc), DVD-R / RW, and next-generation high-density information recording media using a blue laser, and flash memory It is good also as recording media, such as used memory keys, semiconductor memories, such as a memory card, magnetic recording media, such as HDD (Hard Disk Drive).

  The data recorded on the recording medium is not limited to audio data (music data), and may be other types of data such as moving images and image data of a plurality of still images. Accordingly, the configuration is not limited to the configuration in which the audio data and the music information of the album are registered in the database, and other types of data and the management information of the group may be registered in the database.

  In addition, the detailed configuration and detailed operation of the playback apparatus 100 in the above embodiment can be changed as appropriate without departing from the spirit of the present invention.

2 is a block diagram showing a configuration of a playback device 100. FIG. (A) is a figure which shows the structure of CD50 in which the bonus track was added after the normal track. FIG. 2B is a diagram showing a configuration of the CD 60 in which a bonus track is added before a normal track. It is a flowchart which shows a music information acquisition process. It is a flowchart which shows the music information acquisition process of the continuation of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Playback apparatus 10 System controller 11 Operation part 12 Display part 13 Microcontroller 14 RAM
15 Flash memory 16 Communication unit 17 Bus master controller 18 HDD
19 CD drive 20 Decoder 21 DA converter 22 Audio output terminals B1, B2 Bus 30 HUB
31 router 40 CDDB server N communication network

Claims (7)

An acquisition means for acquiring management information based on at least a part of the table of contents information from a database means for registering management information of a plurality of data in a data unit and a group unit of the data;
Reading means for reading out the first table of contents information of the recorded data from a recording medium on which a plurality of data is recorded;
First acquisition control means for causing the acquisition means to acquire the first management information of the first group based on the first table of contents information read by the reading means;
It is determined whether or not the first management information has been acquired by the acquisition means, and if it is determined that the first management information cannot be acquired, at least one of all data corresponding to the first table of contents information is obtained. A second table of contents information relating to the remaining data from which the two pieces of data have been removed is generated, and the acquisition unit acquires second management information of the second group based on the generated second table of contents information. Acquisition control means;
It is determined whether or not the second management information has been acquired by the acquisition means, and when it is determined that the second management information has been acquired, the first management information corresponds to the second management information and the first Third index information relating to data other than data corresponding to the second table of contents information among all data corresponding to the table of contents information is generated, and the third table of the data is generated based on the generated third table of contents information. Third acquisition control means for causing the acquisition means to acquire management information of:
A management information acquisition apparatus comprising: The second and third management information has items,
When it is determined that the second management information has been acquired, the third acquisition control unit has the same items as the second management information and all data corresponding to the first table of contents information The management information acquisition apparatus according to claim 1, wherein the third table of contents information related to data other than the data corresponding to the second table of contents information is generated.   The management information acquisition apparatus according to claim 1, further comprising display means for displaying at least one of the acquired first, second, and third management information.   The second acquisition control means relates to the remaining data obtained by removing one unremoved data from all data corresponding to the first table of contents information when it is determined that the first management information cannot be acquired. 2. The method according to claim 1, further comprising: generating second table of contents information, and causing the acquiring unit to acquire second management information of a second group based on the generated second table of contents information. 4. The management information acquisition device according to any one of 3.   When it is determined that the second management information has been acquired, the third acquisition control unit corresponds to the second management information and the data of all the data corresponding to the first table of contents information. One unselected data other than the data corresponding to the second table of contents information is selected, third table of contents information about the selected data is generated, and the data of the data is generated based on the generated third table of contents information. 5. The management information acquisition apparatus according to claim 1, wherein the acquisition unit repeatedly acquires third management information. 6. A selection input unit that receives a selection input of one third management information from the plurality of third management information when a plurality of third management information is acquired by the acquisition unit;
Registration means for registering the third table information and the second table of contents information in the database unit in association with the third management information selected by the selection input unit and the acquired second management information; ,
The management information acquisition apparatus according to any one of claims 1 to 5, further comprising: On the computer,
A function of reading first table of contents information of the recorded data from a recording medium on which a plurality of data is recorded;
The first management information of the first group is obtained based on at least a part of the read first table of contents information from the database means for registering management information of a plurality of data in units of data and groups of the data. The ability to get and
It is determined whether or not the first management information has been acquired. If it is determined that the first management information cannot be acquired, at least one data is removed from all data corresponding to the first table of contents information Generating the second table of contents information on the remaining data, and acquiring the second management information of the second group from the database means based on at least a part of the generated second table of contents information;
It is determined whether or not the second management information has been acquired, and when it is determined that the second management information has been acquired, the second management information corresponds to the second management information and the first table of contents information Generating third table of contents information related to data other than the data corresponding to the second table of contents information of all the data to be generated, and from the database means based on at least a part of the generated third table of contents information A function of acquiring third management information of data;
Management information acquisition program for realizing.

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