JP2006309840A - Digital content recording apparatus and digital content recording method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a digital content recording device which can store audio data easily on an HDD without requiring CD ripping. <P>SOLUTION: The device 101 is a digital content recording device which is composed of a CD drive 102, a music information acquiring means 103 to acquire music information, a DB controller 104 to control the DB (DataBase) files, a recording medium 105, a communication means 106 to make communication to obtain music information, and an audio data acquiring means 107. The DB controller 104 updates the DB files of the music contained in the loaded CD, and checks items showing whether to allow "audio data acquisition" or not. The audio data acquiring means 107 is informed to acquire the audio data of the checked music, the audio data acquiring means 107 acquires the audio data as informed and records them on the recording medium 105. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a digital content recording apparatus and a digital content recording method for storing digital audio data in a recording medium such as an HDD (Hard Disk Drive).

  In recent years, in-vehicle devices equipped with HDDs have become widespread. HDDs are used not only for storing car navigation map data but also as audio servers, taking advantage of their large capacity. In most devices, when a CD is inserted, the music data contained in the CD is compressed by a compression method such as MP3 (MPEG Audio Layer-3) and stored in the HDD. This is called CD ripping, but it takes at least a few minutes to rip one CD due to the reading speed of the CD drive, the processing speed of the CPU, etc., and it rips all song data contained in the CD. During this time, the disc cannot be ejected.

A content distribution method and system for storing music data in an HDD without a disk has been proposed (see, for example, Patent Document 1). In this system, when a user purchases a CD, the user can purchase an ID at the same time, and the song data contained in the purchased CD can be downloaded using the ID. can do.
JP 2003-108152 A

  However, in the content distribution system of Patent Document 1, the ID is distributed only when the CD is purchased. For example, the case where the user rents the CD is not mentioned.

  In addition, although it is said that ID is purchased at the same time when a CD is purchased, new CDs appear every day, and many CDs are sold as millions. It is very difficult to assign and manage IDs for all of these. Further, since a CD is digital content, its life is long, and it is difficult to reuse an ID once used.

  The present invention has been made to solve the conventional problems, and provides a digital content recording apparatus and a digital content recording method capable of storing digital audio data of a song recorded on a CD more efficiently on an HDD. The purpose is to do.

  In order to achieve the above object, a digital content recording apparatus of the present invention is a digital content recording apparatus that acquires and records digital audio data from a content server in which a plurality of digital audio data is recorded, and is recorded on a music CD. A CD drive that reads recorded TOC (Table Of Contents) information, a recording medium that records a plurality of digital audio data, and a DB (DataBase) file that records information related to songs of the digital audio data recorded on the recording medium DB management means for managing music information, music information acquisition means for receiving TOC information from the CD drive, acquiring music information specified based on the TOC information, and notifying the music management information to the DB management means, and DB management means Based on the acquisition instruction from Audio data acquisition means for acquiring digital audio data corresponding to the song information from the bar and recording it on a recording medium, the DB management means receives the song information from the song information acquisition means, and information relating to the song indicated by the song information is It is determined whether or not it is included in the DB file, and if the DB file does not contain information related to the song indicated by the song information, information related to the song indicated by the song information is added to the DB file, and the audio data acquisition means The digital audio data corresponding to the song information is instructed to be acquired.

  With this configuration, the digital audio data of the music included in the music CD once inserted can be obtained even without a disc.

  Further, in the above configuration, the apparatus further includes a communication unit that communicates with a music information management server that is provided outside and manages a plurality of music information, and the music information acquisition unit receives the received TOC information via the communication unit. And the song information specified by the song information management server based on the notified TOC information is acquired via the communication means.

  With this configuration, the song information can be acquired by communication, so that it is not necessary to hold or update the song information internally.

  The content server is an external recording medium on which a plurality of digital audio data is recorded, and the audio data acquisition means is an external recording medium driver for reading data recorded on the external recording medium. When the digital audio data of the music instructed to be acquired from the DB management means is recorded on the external recording medium, the driver for the driver reads the digital audio data from the external recording medium and records it on the recording medium.

  With this configuration, a music piece that is permitted to record digital audio data on a recording medium can obtain audio data from an external recording medium without a disk.

  The information related to the song indicated by the song information in the DB file includes an item indicating whether or not recording of digital audio data of the song indicated by the song information is permitted on the recording medium. If the DB file does not contain information regarding the song to be shown, the item is added as a permission state, and the audio data acquisition unit is instructed to acquire digital audio data corresponding to the song information based on the item, and the audio data acquisition unit When the acquisition of the digital audio data is completed, the DB file item is updated.

  With this configuration, it is possible to easily specify a song that is permitted to be recorded, and to specify and acquire digital audio data when it can be acquired from the content server.

  The DB file includes an item representing the file name of the digital audio data recorded on the recording medium, and the DB management unit sets the file name after the audio data acquisition unit completes the acquisition of the digital audio data. It is recorded in the item and it is determined whether or not an instruction to acquire digital audio data is issued using the item representing the file name.

  With this configuration, the DB file can be further simplified.

  Further, the audio data acquisition means changes the priority order for acquiring the digital audio data of the song notified of the acquisition instruction when the digital audio data of the acquisition-instructed song is not recorded on the content server or the external recording medium. .

  With this configuration, it is possible to reduce the number of confirmations as to whether or not the digital audio data is recorded on the content server or the external recording medium, and useless communication is performed. Can be prevented.

  The digital content recording device is installed in a car.

  With this configuration, in a digital content recording apparatus with a limited use time, it is possible to record digital audio data on a recording medium even after the disc is taken out without waiting for completion of CD ripping.

  According to the present invention, it is not necessary to assign an ID to every music CD, and digital audio data of a song included in a music CD once inserted can be obtained without a disc.

  Hereinafter, a digital content recording system, a digital content recording apparatus, and a digital content recording method according to an embodiment of the present invention will be described with reference to the drawings.

  A digital content recording system according to an embodiment of the present invention is shown in FIG. In FIG. 1, reference numeral 101 denotes a digital content recording apparatus, which includes a CD drive 102, song information acquisition means 103, DB (DataBase) management means 104, recording medium 105, communication means 106, and audio data acquisition means 107. In the present invention, the description is omitted because it only needs to have the same function as the conventional one for reproduction, but actually, the user can listen to music by reading and reproducing the audio data stored in the recording medium 105. it can. In the present embodiment, the audio data means digital audio data that can be played back by a dedicated device.

  The CD drive 102 reads data recorded on the music CD 110 inserted by the user.

  The song information acquisition unit 103 receives TOC (Table Of Contents) information recorded on the music CD 110 read by the CD drive 102 and notifies the communication unit 106 of an instruction to acquire song information based on the information. Also, the music information is acquired from the music information management server 108 via the communication means 106. Here, the song information is information such as a title, an artist name, and an album name.

  The DB management unit 104 reads a DB file stored in the recording medium 105, and updates the DB file when the song information obtained by the song information acquisition unit 103 is not registered in the current DB file. In the DB file, song information included in the music CD inserted in the digital content recording apparatus 101 is recorded. The song information includes, for example, items such as a title, artist name, album name, that is, information acquired by the song information acquisition unit 103, a file name of audio data stored in the recording medium 105, and “ An item “audio data acquisition permission” indicating whether or not recording of audio data is permitted on the recording medium 105 is included. The DB management unit 104 instructs the audio data acquisition unit 107 to acquire audio data for a song whose audio data acquisition permission item is checked. When acquisition of audio data (recording on the recording medium 105) is completed, an acquisition completion notification is received from the audio data acquisition means 107, and the DB file is updated. Specifically, the file name of the song for which audio data acquisition has been completed is recorded, and the item for permission to acquire audio data is unchecked.

  The recording medium 105 is, for example, an HDD in which DB files and audio data are recorded. By utilizing the large capacity, digital data used in other applications may be stored in the same recording medium 105.

  The communication means 106 acquires the information of the music included in the inserted music CD 110 from the music information management server 108 by wireless communication (Internet), for example, according to the instruction of the music information acquisition means 103. The song information management server 108 is, for example, a CDDB (CD DataBase) in which various pieces of song information are stored as a database. The song information management server 108 determines which song in the database is the song based on the TOC information, and notifies the song information (title, artist name, album name, etc.).

  The audio data obtaining unit 107 obtains audio data of a designated song when communication with the content server 109 is possible according to an instruction from the DB management unit 104. The content server 109 stores audio data of various songs compressed in MP3 format, for example, an audio home server at home. It is assumed that the content server 109 has a communication function and can be accessed from the outside (not shown).

  The details of the operation of the digital content recording system configured as described above will be described.

  FIG. 2 is a flowchart of DB file update processing when the music CD 110 is inserted. First, the music CD 110 is inserted into the CD drive 102 (step S201). The music CD 110 inserted at this time is permitted to be ripped for private use.

  The CD drive 102 in which the music CD 110 is inserted reads the TOC information (step S202). The read TOC information is notified to the music information acquisition means 103.

  The song information acquisition unit 103 uses the TOC information read by the CD drive 102 to acquire information on the song recorded on the music CD 110 (step S203). Specifically, the TOC information is notified to the song information management server 108 via the communication means 106, and the song information is acquired from the song information management server 108. The song information acquisition unit 103 notifies the DB management unit 104 of the acquired information.

  The DB management unit 104 reads the current DB file stored in the recording medium 105 (step S204). Although the DB file is stored in the recording medium 105, the present invention is not limited thereto, and the DB file may be stored in a dedicated memory. At that time, the DB file is read from the dedicated memory.

  Next, the DB management unit 104 compares the music information recorded on the music CD 110 acquired by the music information acquisition unit 103 with the DB file read from the recording medium 105, and the music in the music CD 110 is new. Whether or not (step S205). This determination is performed for each song. Since a plurality of songs are recorded on most music CDs, it is assumed that the first song (track No. 1) is the object of determination when step S205 is first executed.

  In the determination in step S205, if the song information acquired by the song information acquisition unit 103 is not included in the DB file, it is determined that the song is a new song. If it is determined that the song is new, the process proceeds to step S206. If not, the DB file does not need to be updated, and the process proceeds to step S207.

  If it is determined in step S206 that the song is new, the contents of the DB file stored in the recording medium 105 are updated (step S206). Specifically, the information on the song to be determined is added to the current DB file. At this time, the audio data acquisition permission item in the DB file is checked. At this time, since the audio data itself is not stored in the recording medium 105, the file name is blank. The DB management unit 104 performs the processing in step S206.

  In step S207, it is determined whether or not the song to be determined is the last song included in the music CD 110. The DB management unit 104 determines this based on the song information received from the song information acquisition unit. If it is the last song (YES in step S207), the DB file update process at the time of CD insertion is terminated. If it is not the last song (NO in step S207), the process proceeds to step S208. In step S208, the next tune (the one following the track No.) is set as a determination target, and the process returns to step S205 to repeat the same processing. By the operation described above, the DB file is updated when the CD is inserted.

  FIG. 3 shows an example of the DB file. The DB file includes information of a list 301. Here, for each song, a file name, a title, an artist name, an album name, a track number, and the like are stored. , Audio file acquisition permission items are recorded. Other items may be included, but are omitted in this embodiment. For example, for the song “A1”, the file name is “01_A1.mp3”, the artist name is “TARO”, the album name is “BEST”, and the track No. Is “1”. Since the audio data acquisition permission item is not checked, the audio data of this song is already stored in the recording medium 105. The recording medium 105 is stored with a file name “01_A1.mp3”. The same applies to other songs.

  FIG. 4 shows an example of music information acquired by the music information acquisition means 103. In this example, it is assumed that the music information includes the information of the list 401. For each song, title, artist name, album name, track No. Is acquired as an item. Other items may be included, but are omitted in this embodiment. For example, the song “C1” has an artist name of “SABURO”, an album name of “SPECIAL”, a track No. Is “1”. The same applies to other songs.

  FIG. 5 shows the DB file that has been updated by the DB management unit 104 when the current DB file is the list 301 and the song information of the inserted music CD 110 is the list 401. Information of the list 401 is added to the list 301. As for the added music (“C1”, “C2”, “C3”), since the audio data has not been acquired yet, there is no file name, and the audio data acquisition permission item is checked. That is, these songs are registered in the DB file, but audio data is not stored in the recording medium 105.

  Next, the details of the operation of the audio data acquisition process of the music whose audio data acquisition permission item is checked will be described with reference to the flowchart of FIG.

  First, the DB management unit 104 confirms whether there is a check in the audio data acquisition permission item (step S301). This confirmation is performed, for example, when the DB file is updated. If there is a check, that is, if a new song is registered, the process proceeds to step 302. If not, it means that the audio data is already stored in the recording medium 105, and the audio data acquisition process is terminated.

  Next, the DB management unit 104 instructs the audio data acquisition unit 107 to acquire audio data of a song whose audio data acquisition permission item is checked (step S302).

  The audio data acquisition unit 107 confirms whether communication with the content server 109 is possible (step S303). Here, for example, communication is performed by wireless communication (Internet). If communication is not possible, wait until communication is possible. That is, step S303 is repeated. If communication is possible, the process proceeds to step S304.

  If the audio data acquisition unit 107 determines that communication with the content server 109 is possible, it is checked whether desired audio data is stored in the content server (step S304). If the desired audio data is stored, the process proceeds to step S305. Otherwise, the process proceeds to step S306. The audio data is acquired for each song, and the acquisition order is, for example, the order registered in the DB file.

  When desired audio data is stored in the content server 109, acquisition of audio data is started. At the time of acquisition, it is desirable that the data is encrypted and transmitted from the viewpoint of security. However, since it is not the main problem of the present invention, detailed description is omitted. Actual communication is performed by packet communication or the like.

  If the acquisition of the desired audio data is completed or the desired audio data is not stored in the content server 109, it is confirmed whether there is any other song to be downloaded (step S306). If there is no other song to be downloaded, the audio data acquisition process is terminated. If there is still a song to be downloaded, the process proceeds to step S307. When the audio data acquisition of the target song is completed, the audio data acquisition unit 107 notifies the DB management unit 104 of the completion of acquisition, and the DB management unit 104 updates the DB file in response to the notification.

  In step S307, the music for which audio data is acquired is changed, and the process proceeds to S304. After that, the same processing is repeated.

  Through the operation described above, the digital content recording apparatus 101 acquires audio data.

  Although audio data acquisition is performed in the order registered in the DB file, the priority order of acquisition may be changed. In step S304 in the flowchart of FIG. 6, it is confirmed whether or not audio data is stored in the content server 109. If the audio data is not stored (NO in step S304), the download order of the music is set. Finally. By doing so, there is no change in the audio data stored in the content server 109, such as when communication between the digital content recording apparatus 101 (actually the audio data acquisition unit 107) and the content server 109 is frequently interrupted. When considered, it is possible to prevent reconfirmation of a song for which it is determined that audio data is not stored again when communication is interrupted and reconnected. In addition, when all audio data of a song scheduled to be acquired is not stored in the content server 109, the audio data may be acquired after the next day. In this way, useless communication can be prevented.

  As described above, with the digital content recording system described above, the disc can be taken out even if CD ripping is not completed, and the music in the music CD can be easily stored on the recording medium. Since the audio data acquired and stored in the recording medium is the one in which the CD is inserted once, there is also an effect of preventing duplicating of improper digital data. Moreover, since management is performed based on the song information, it is not necessary to prepare a new ID or the like.

  The audio data is acquired from the content server, but the present invention is not limited to this. FIG. 7 is a diagram showing another example of the system configuration of the present embodiment. The digital content recording apparatus 701 differs from the digital content recording apparatus 101 shown in FIG. 1 only in that the audio data acquisition means 107 is a memory card driver 702, and the configuration thereafter is not changed. Since the functions are the same, the same numbers are used in FIG.

  The memory card 703 includes compressed audio data. If these are regarded as the content server 109 and the audio data of the music to be acquired is included, the desired audio data is recorded from the memory card 703 onto the recording medium 105.

  Similarly, in the system of FIG. 7, the memory card 703 may be a portable digital content player with HDD. Further, it may be a CD-R or DVD-R created with audio data such as MP3.

  Further, the digital content recording apparatus may hold a database of various music information, and acquire music CD music information from the database. In this case, the music information management server can be omitted.

  The content server is an audio home server, but is not limited to this. A PC (Personal Computer) having similar functions may be used. Alternatively, a dedicated server prepared by a third party (record company or CD rental company) may be used.

  In the digital content recording system according to the present embodiment, audio data is acquired and stored in a recording medium, but the present invention is not limited to this. As in the current system, compression means may be provided to rip an inserted music CD, and audio data may be acquired later only for songs that have not been ripped.

  Further, the DB file has an item for permission to acquire audio data, and the audio data acquisition instruction is performed depending on whether or not this item is checked. However, the present invention is not limited to this. For example, the determination may be made based on whether there is a file name.

  In the audio data acquisition process, the audio data acquisition instruction is performed when the DB file is updated. However, the present invention is not limited to this. For example, the communication unit may make an inquiry to the DB management unit when communication between the digital content recording apparatus and the content server becomes possible.

  Further, although audio data acquisition is performed in the order registered in the DB file, the present invention is not limited to this. A similar system can be constructed in any order, such as song name order or album name order.

  Further, in the digital content recording system of the present embodiment, the pull-type communication that issues a request for audio data acquisition from the digital content recording device is used, but the same system can be used for the push-type communication that issues a transmission request from the content server. Can be configured. At this time, the content server may read the DB file of the digital content recording device and determine the audio data to be transmitted.

  In the present embodiment, the digital content recording apparatus has been described. However, for example, a system can be constructed as a home stereo device. In addition, when the digital content recording apparatus according to the present embodiment is installed in a car, the usage time is limited, so that the digital audio data is recorded on the recording medium even if the disc is removed without waiting for the completion of CD ripping. You can enjoy the effect of being.

  Further, although the recording medium is an HDD, a similar system can be constructed even if it is another recording medium.

  The communication performed by the communication means is wireless communication (Internet), but is not limited to this. Infrared communication or the like may be used, or a similar system can be constructed for wired communication.

  In addition, although the audio data is compressed by MP3, it is not limited to this. Other compression formats such as AAC (Advanced Audio Coding) may be used, or a similar system can be constructed even with non-compressed data.

  As described above, the digital content recording apparatus and the digital content recording method according to the present invention can take out the disc without waiting for the ripping process, and can easily store the audio data in the recording medium such as the HDD. It has an effect and is useful as an AV system for a home or a mobile body.

1 is a block diagram of a digital content recording system according to an embodiment of the present invention. The flowchart for demonstrating operation | movement of DB file update processing at the time of CD insertion in embodiment of this invention The figure which shows an example of the list showing the information of DB file in embodiment of this invention The figure which shows an example of the list | wrist of the music information which the music information acquisition means 103 in embodiment of this invention acquires. The figure which shows an example of the list | wrist of DB file which updated the content in embodiment of this invention The flowchart for demonstrating the operation | movement of the audio data acquisition process in embodiment of this invention The block diagram of the other example of the digital content recording system in embodiment of this invention

Explanation of symbols

101, 701 Digital content recording apparatus 102 CD drive 103 Music information acquisition means 104 DB management means 105 Recording medium 106 Communication means 107 Audio data acquisition means 108 Music information management server 109 Content server 110 Music CD
301, 501 List representing DB file information 401 List representing song information 702 Memory card driver 703 Memory card

Claims (8)

A digital content recording apparatus that acquires and records digital audio data from a content server in which a plurality of digital audio data is recorded,
A CD drive for reading TOC (Table Of Contents) information recorded on a music CD;
A recording medium for recording a plurality of digital audio data;
DB management means for managing a DB (DataBase) file in which information related to music of digital audio data recorded on the recording medium is recorded;
Song information acquisition means for receiving the TOC information from the CD drive, acquiring song information specified based on the TOC information, and notifying the DB management means of the song information;
Audio data acquisition means for acquiring digital audio data corresponding to the music information from the content server based on an acquisition instruction from the DB management means and recording the digital audio data on the recording medium;
The DB management unit receives the song information from the song information acquisition unit, determines whether or not information related to the song indicated by the song information is included in the DB file, and the song information is stored in the DB file. When the information about the music to be shown is not included, the information about the music indicated by the music information is added to the DB file, and the audio data acquisition means is instructed to acquire digital audio data corresponding to the music information Digital content recording device. A communication unit that communicates with a music information management server that is provided outside and manages a plurality of music information;
The song information acquisition means notifies the received TOC information to the song information management server via the communication means, and the song information specified by the song information management server based on the notified TOC information is sent to the communication means. The digital content recording apparatus according to claim 1, wherein the digital content recording apparatus is acquired through The content server is an external recording medium on which a plurality of digital audio data is recorded, and the audio data acquisition means is an external recording medium driver that reads data recorded on the external recording medium,
The external recording medium driver reads the digital audio data from the external recording medium and records the digital audio data of the song instructed to be acquired from the DB management unit when the external recording medium is recorded on the external recording medium. The digital content recording apparatus according to claim 1, wherein the digital content recording apparatus is recorded on a medium. The information related to the song indicated by the song information in the DB file includes an item indicating whether or not recording of digital audio data of the song indicated by the song information is permitted on the recording medium,
The DB management means adds the item as a permitted state when information related to the song indicated by the song information is not included in the DB file, and responds to the song information to the audio data acquisition means based on the item. 3. The digital content recording apparatus according to claim 1, wherein an instruction to acquire digital audio data is given, and the item of the DB file is updated when the audio data acquiring unit completes acquisition of the digital audio data. The DB file includes an item representing a file name of digital audio data recorded on the recording medium,
The DB management means records the file name in the item when the audio data acquisition means completes the acquisition of the digital audio data,
2. The digital content recording apparatus according to claim 1, wherein it is determined whether or not an instruction to acquire the digital audio data is issued using an item representing the file name. The audio data acquisition means changes the priority order for acquiring the digital audio data of the acquisition-instructed song when the digital audio data of the acquisition-instructed song is not recorded on the content server or the external recording medium. The digital content recording apparatus according to claim 1, wherein the digital content recording apparatus is a digital content recording apparatus. The digital content recording apparatus according to claim 1, wherein the digital content recording apparatus is installed in a car. A digital content recording method for recording digital audio data on a recording medium,
Reading TOC information recorded on a music CD (Compact Disc);
Obtaining song information related to a song recorded on the music CD using the read TOC information;
It is determined whether the song information indicated by the acquired song information is recorded in the DB file, and when the song information indicated by the song information is not recorded in the DB file, the song information is stored in the DB file. Adding information relating to the song shown, and obtaining digital audio data corresponding to the song information;
Recording the acquired digital audio data on the recording medium;
A digital content recording method comprising:

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