WO2005083703A1 - 情報記録媒体および情報処理装置 - Google Patents
情報記録媒体および情報処理装置 Download PDFInfo
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- WO2005083703A1 WO2005083703A1 PCT/JP2005/003396 JP2005003396W WO2005083703A1 WO 2005083703 A1 WO2005083703 A1 WO 2005083703A1 JP 2005003396 W JP2005003396 W JP 2005003396W WO 2005083703 A1 WO2005083703 A1 WO 2005083703A1
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- audio data
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
- G11B20/1258—Formatting, e.g. arrangement of data block or words on the record carriers on discs where blocks are arranged within multiple radial zones, e.g. Zone Bit Recording or Constant Density Recording discs, MCAV discs, MCLV discs
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
- G11B20/00485—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier
- G11B20/00492—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier wherein content or user data is encrypted
- G11B20/00507—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier wherein content or user data is encrypted wherein consecutive physical data units of the record carrier are encrypted with separate encryption keys, e.g. the key changes on a cluster or sector basis
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/00731—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction
- G11B20/00746—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number
- G11B20/00753—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number wherein the usage restriction limits the number of copies that can be made, e.g. CGMS, SCMS, or CCI flags
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
- G11B20/1251—Formatting, e.g. arrangement of data block or words on the record carriers on discs for continuous data, e.g. digitised analog information signals, pulse code modulated [PCM] data
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1262—Formatting, e.g. arrangement of data block or words on the record carriers with more than one format/standard, e.g. conversion from CD-audio format to R-DAT format
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00007—Time or data compression or expansion
- G11B2020/00014—Time or data compression or expansion the compressed signal being an audio signal
- G11B2020/00057—MPEG-1 or MPEG-2 audio layer III [MP3]
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
- G11B2020/1218—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc
- G11B2020/1242—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc the area forming one or more zones, wherein each zone is shaped like an annulus or a circular sector
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B2020/1264—Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting concerns a specific kind of data
- G11B2020/1265—Control data, system data or management information, i.e. data used to access or process user data
- G11B2020/1277—Control data, system data or management information, i.e. data used to access or process user data for managing gaps between two recordings, e.g. control data in linking areas, run-in or run-out fields, guard or buffer zones
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
- G11B2220/2562—DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
Definitions
- the present invention relates to an information recording medium and an information processing apparatus capable of reproducing and recording content on the information recording medium.
- the present invention relates to a copy management technology for contents such as audios recorded in a plurality of recording areas and related to each other on one information recording medium.
- the content recorded on the information recording medium is encrypted so as not to be copied illegally.
- DVD-Audio music content is encrypted using an encryption technology called CPPM (Content Protection for Prerecorded Media).
- copyright management information on the encrypted music content is also recorded on the information recording medium, and it is possible to control the copy of the encrypted music content based on the copyright management information. It is possible. For example, information indicating that copying is permitted n times for each recording device is recorded as copyright management information of a certain content on an information recording medium, and unique information for uniquely identifying music, for example, ISRC (International Standard Recording Code) is also recorded.
- ISRC International Standard Recording Code
- the unique information of the copied music content and the number of copies are stored in a memory built in the recording device. Furthermore, when copying the same music content to the same recording device, the number of times of copying and the unique information stored in the built-in memory are checked, and control is performed to prohibit copying exceeding the permitted number of times. Is done.
- recording audio data of the same music content but having different attributes on one information recording medium may increase user convenience such as low power consumption and high-speed copying. It becomes possible. For example, this corresponds to a case where audio data in which a certain music content is recorded by linear PCM and audio data which is compressed using a compression recording method such as mp3 are recorded. In this case, it is convenient to play back linear PCM audio data during playback, and to copy mp3 audio data for high-speed copying during copying. As a result, music content with high sound quality can be reproduced at home, and reproduced compressed audio can be enjoyed on a portable device (player).
- Non-Patent Document 1 DVD Specifications for Read-only Disc Part 4 AUDIO SPECIFICATIONS Version. 1.2
- the information recording medium is divided into a first recording area and a second recording area, and each recording area has the same content. It is possible to record content using recording methods with different attributes Conceivable. Here, it is assumed that audio data is recorded as an example of the content to be recorded on the information recording medium.
- the playback device capable of decoding the recording method of the audio data in the first recording area reproduces the audio data in the first recording area, and reproduces the audio data in the second recording area.
- the reproducing apparatus capable of decoding the data recording method can support a plurality of recording methods with one information recording medium. If the data to be recorded on the information recording medium as audio data, for example, the first recording area first audio data in Linear PCM is recorded, but the second recording area is a same content m It is assumed that the second audio data is recorded at p3. In this case, management information for managing the handling of the recorded audio data and copyright management information are recorded in each recording area!
- Various playback devices are conceivable as playback devices for playing back such information recording media. Specifically, a playback device that can decode only the audio data in the first recording area, a playback device that cannot decode the audio data in the second recording area, a playback device, A playback device that can decode both of the audio data in the recording areas is considered.
- the audio data is output using a reproducing apparatus capable of decoding both recording areas, and the output audio data is copied by the recording apparatus, so that the first audio data is copied three times.
- the second audio data can be copied three times, for a total of six copies.
- the number of copies permitted for the first audio data and the second audio data is different.
- the number of copies differs depending on the audio data output for copying.
- the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a high-quality sound content and a compressed content force which are related to each other and a first recording area of an information recording medium.
- an object of the present invention is to provide a high-quality sound content and a compressed content force which are related to each other and a first recording area of an information recording medium.
- An information recording medium that solves the above problem is an information recording medium including a first recording area and a second recording area, wherein the first recording area includes One piece of content information, first management information regarding the handling of the first content information, and first copyright-related information for restricting the first content information by copyright, In the second recording area, second content and second management information including second copyright-related information for restricting the second content information by copyright are recorded,
- the first content information and the second content information are the same content, but have different attributes, and the second management information is different from the first content information and the second content information.
- the copyright compliance flag indicates the restriction by copyright indicated by the second copyright-related information and the first content linked by the link information.
- An information processing apparatus is an information processing apparatus for recording or reproducing an information recording medium having a first recording area and a second recording area, wherein the first recording area Has a first content information and a first content information regarding the handling of the first content information.
- Management information and first copyright-related information for restricting the first content information by copyright are recorded, and in the second recording area, the second content and the second Second management information including second copyright-related information for restricting the content information by copyright is recorded, and the first content information and the second content information are the same content.
- the second management information includes link information indicating a relationship between the first content information and the second content information, and a copyright compliant flag.
- the right compliance flag indicates the restriction by the copyright indicated by the second copyright-related information and the first copyright related to the first content information linked by the link information.
- the information processing device includes: a reading unit that reads information on the information recording medium; and a information unit that reads the information read by the reading unit.
- the information processing unit when outputting the second content information, sets the copyright compliance flag to a restriction on recording or reproduction indicated by the second copyright-related information.
- the restriction on recording and reproduction indicated by the first copyright-related information relating to the first content information linked by the link information is information indicating that the contents are the same.
- the second content information is output in accordance with the copyright-related information, thereby achieving the above object.
- the present invention may be implemented as a license information management method having steps as characteristic constituent means in the information processing apparatus, or as a program for causing a personal computer or the like to execute those steps. it can. It goes without saying that the program can be widely distributed via a recording medium such as a DVD or a transmission medium such as the Internet.
- the reproducing device even if data having the same content but different attributes and copyright management information relating to the respective data are recorded on the information recording medium, regardless of the type of the reproducing device, the reproducing device has When the output data is copied by the recording device, the number of copies can be the same, and user confusion can be avoided.
- FIG. 1 (a) is a diagram showing a logical structure of an information recording medium.
- FIG. 1 (b) is a diagram showing a logical structure of the information recording medium.
- FIG. 2 is a diagram showing a file structure of an information recording medium.
- FIG. 3 (a) is a diagram showing a recording position of first copyright management information.
- FIG. 3B is a diagram showing a recording position of the second copyright management information.
- FIG. 4 is a flowchart showing a flow of processing in the recording device.
- FIG. 5 is a flowchart showing the flow of processing when copying second audio data using a copyright-compliant flag.
- FIG. 6 is a diagram showing an example of the concept of copying.
- FIG. 7 is a diagram showing another example of the concept of copying.
- FIG. 8 is a diagram showing an example of a link relationship.
- FIG. 9 is a diagram showing a data structure of a second management information file.
- FIG. 10 is a block diagram showing a functional configuration of a recording device.
- FIG. 11 is a flowchart of a recording process of a group link information table.
- FIG. 12 is a flowchart of a process for determining copyright-related information.
- FIG. 13 is a block diagram showing a functional configuration of a playback device.
- FIG. 14 is a flowchart of a process for determining copy audio data.
- FIG. 1A is a logical structural diagram of a DVD Audio Disc 100 as an example of the information recording medium 100 according to the present invention.
- an information recording medium (hereinafter also referred to as “DVD Audio disc”) 100 has a lead-in area 110, a volume area 120, and a lead-out area. Including 130. These areas are arranged so as to face the inner peripheral force and the outer peripheral side of the information recording medium 100. These areas can be identified by the identification information included in the sector address of the physical sector. Physical sectors are arranged in ascending order by sector address.
- the lead-in area 110 stores data and the like for stabilizing the operation of the reproducing apparatus at the start of reading.
- the lead-out area 130 is used to notify the playback device of the end of playback. Note that the lead-out area 130 does not store any meaningful data.
- volume area 120 digital data corresponding to the application is stored.
- Physical sectors included in the volume area 120 are managed as logical blocks.
- a logical block is identified by assigning a continuous number (logical block number) to the physical sector following the physical sector No. 0, with the physical sector at the beginning of the volume area 120 being numbered zero.
- the volume area 120 includes a volume file management area 121, a DVD Audio Zonel 22, and a DVD Video Zonel23.
- the DVD Vide Zone 23 and the Compressed Audio Zone 124 are optional and may not be present (in the present embodiment, it is assumed that the Compressed Audio Zone 124 exists as the second recording area).
- the data in the volume file management area 121 is recorded in a format (ISOZIEC 13346) that can be decrypted by any of the device corresponding to the DVD Audio Zonel 22 and the device corresponding to the Compressed Audio Zonel 24. It is assumed that the same music (for example, music A) is recorded in different formats in the DVD Audio Zone 122 and the Compressed Audio Zone 124. Further, the volume file management area 121 stores file system management information for managing a plurality of logical blocks as files in accordance with ISO / IEC 13346. Here, the file system management information is information indicating the correspondence between each file name of a plurality of files and the address of a logical block group occupied by each file.
- the playback device accesses the information recording medium in file units based on the file system management information. Specifically, the playback device acquires the address of the logical block group corresponding to the given file name by referring to the file system management information, and accesses the logical block group based on the address. Thereby, digital data of a desired file can be read.
- the playback device that can play back the audio data recorded in the DVD Audio Zone 122 which is the first recording area, is used to read a volume when reading the information recording medium 100.
- the first management information file is accessed, and the first management information file is accessed.
- the audio data of the audio data group can be accessed.
- a playback device that cannot play back audio data recorded in the first recording area cannot decode the contents of the first management information file because the corresponding format is different. Audio data recorded in the recording area cannot be played.
- a playback device that can play back audio data recorded in the Compressed Audio Zonel 24, which is the second recording area, reads the file system management information in the volume file management area 121 when reading the information recording medium 100. After obtaining the information of the storage location (address) of the second management information file, the second management information file is accessed, and the audio data can be accessed according to the contents of the second management information file. Become like On the other hand, the audio data recorded in the second recording area cannot be reproduced! /, And the reproducing apparatus cannot decode the contents of the second management information file because the corresponding format is different. The audio data recorded in the second recording area cannot be reproduced! / ,.
- the volume area 120 includes storage position information (address information) of the DVD Audio Zonel22 (first recording area) and the Compressed Audio Zone 124 (second recording area)
- the first management information file that manages the handling of the data group file is recorded.
- the Compressed Audio Zonel24 records a second audio data file (# 1, # 2, ..., #n) in which audio data is recorded for each song, and the handling of each audio data.
- the second management information file is recorded. Specifically, as shown in FIG. 2, the first management information file and the first audio data group file are recorded in the AUDIO-TS directory, and the second management information file and the second audio data file are recorded. Are recorded on the DVD—CAUD directory.
- first audio data recorded in the first recording area
- the first copyright management information for managing the copyright of (1) is included in the file in which the corresponding first audio data is recorded. Specifically, as shown in FIG. 3, the first audio data is recorded by being divided into Audio Packs corresponding to a data block having a predetermined byte length, and each Audio Pack has a playback time and the like. In addition to a header part for recording and a part for recording audio data, an area for recording first unique information on first audio data and first copyright management information such as copy management information is provided.
- the unique information is information that uniquely specifies audio data.
- ISRC ISRC
- the copyright management information includes copy management information indicating the number of permitted copies, the quality (number of channels, sampling frequency) of data to be copied, and reproduction restriction information. If the size of the first audio data is larger than the data size of the audio data recording area in the Audio Pack, the first audio data is divided into a plurality of pieces so that the audio data can be stored in the Audio Pack. It will be recorded across the Audio Pack.
- second audio data audio data recorded in the second recording area
- the second copyright management information relating to the copyright in (2) is included in the second management information file.
- the second management information file has an audio file management table, and the audio file management table contains general information and each second audio data file (FIG. 3 (b) Has audio file information # 1 audio file information #n audio file information
- the file includes audio file information for recording information about (i).
- the general information of the audio file management table includes the number of audio file information included in the audio file management table and the last audio file information among the audio file information included in the audio file management table (this example). Stores the end address information of audio file information #n).
- Each sound file information includes general information, second copyright management information regarding second sound data managed by the sound file information, second unique information, and a copyright compliance flag.
- the general information of the audio file information includes the file name of the audio data included in the audio file information.
- the general information of the audio file information # 1 includes the file name of the "second audio data file # 1" shown in FIG.
- the general information includes the file name of "second audio data file # 2" shown in the figure, and similarly, the general information of audio file information #n includes "second audio data file #n". File name.
- Each second audio data file is obtained by subjecting the first audio data of a song (song corresponding to the second audio data) included in the first audio data group file to audio compression conversion.
- the recording system of the first audio data is linear PCM
- the audio data compressed by mp3 is recorded as the second audio data file.
- each second audio data may have a different audio compression recording method.
- the second audio data is recorded in mp3, and another second audio data is MPEG4 HE AAC, DTS ⁇ WMA Pro, MEPG-1, 2 Layerll or ATRAC3Plus may be recorded. Not all the second audio data files need to be audio compression converted from the first audio data.
- the second audio data may be data that is recorded in the same audio code format as the first audio data and has a different number of channels or a different sampling frequency.
- the “copyright compliance flag” included in the second management information file is based on the copyright restriction indicated by the second copyright management information and the first copyright from which the second audio data was generated.
- the first copyright management information on audio data is This flag indicates whether or not the indicated copyright restriction has the same contents (that is, contents that can be centrally managed as copyright management information of the same type regarding copyright restrictions). For example, if the content provider can manage the first copyright management information and the second copyright management information in a unified manner, “1” is recorded in the copyright compliance flag, and the copyright management flag is managed separately. If it should, “0” is recorded. Of course, “0” may be recorded when the above-mentioned information can be managed centrally, and “1” may be recorded when the information should be separately managed.
- the information processing device may have both functions of a reproducing device and a recording device.
- a reproduction device for example, a DVD player
- a recording device for example, a hard disk device
- the recording device checks whether or not the input unique information of the content is already recorded in the built-in memory (S402).
- a DVD A disc in which the first audio data and the second audio data representing the music A having the same content but different attributes are recorded, is copied from the DVD A.
- the case in which this is performed will be described using FIG.
- the first audio data and the second audio data are recorded on the DVD Audio Disc in the first recording area and the second recording area, respectively, and a copy of the unique information and the copyright management information on each audio data is recorded. It is assumed that the number of times of permission is the same (in this case, two times).
- the first audio data is read out using a reproducing apparatus # 1 capable of decoding only the first recording area as the reproducing apparatus for reading out the audio data, and the unique information of the content and the copyright management information are stored.
- the audio data is copied by a recording device capable of copying, the first audio data of song A can be copied twice.
- the second audio data is read out by using the reproducing device # 2 capable of decoding only the second recording area, and the audio data is copied by the recording device, the second audio data of the song A is also read.
- the data can be copied twice.
- the first audio data or the second audio data is read out using the reproducing device # 3 capable of decoding the first recording area and the second recording area, and the audio data is copied by the recording apparatus.
- the first audio data or the second audio data may be copied twice.
- the first audio data and the second audio data may be copied once each, and as a result, the audio data of song A may be copied twice.
- the unique information “01234” of the first audio data and “1” as the number of times of copying have been recorded in the internal memory of the recording device. ing.
- the internal memory of the recording device is checked, and the same unique information “01234” as the second audio data has already been recorded. Then, "1" is added to "2", and the second audio data is copied once. Further, even if an attempt is made to copy the first audio data or the second audio data, the number of copies of the unique information “01234” is “2” in the internal memory of the recording device. Further copying of the first audio data and the second audio data specified in It is.
- the playback device # 3 the number of times of copying the audio data indicating the song A can be set to two.
- the information recording medium A can be copied no matter what playback device is used as the playback device that reads out audio data.
- the number of times can be the same.
- the information recording medium is damaged, and the reproducing device may read out the unique information or the copyright management information having an incorrect value, or may perform authoring or the like.
- the reproducing device may read out the unique information or the copyright management information having an incorrect value, or may perform authoring or the like.
- different unique information and copyright management information may be erroneously recorded.
- the copyright management information such as the unique information and the number of permitted copies is read out differently from the original information. I can't.
- a playback device that can decode the first recording area and the second recording area may be controlled using a copyright compliant flag when copying the second audio data.
- FIG. 5 is a flowchart showing the flow of processing when the second audio data is copied using the copyright compliant flag.
- the second management information file (S500) recorded in the second recording area of the DVD Audio disc the audio file information corresponding to the music to be copied (S502) Then, a copyright compliant flag included in the audio file information is read (S506).
- Copy control is performed based on the first unique information and the first copyright management information regarding the first audio data from which the second audio data was generated (S508), and the copyright-compliant flag is In the case of “0” (the second copyright management information and the first copyright management information are managed separately) (S506: different), the second unique information and the second copyright management information Based on! /, Copy control is performed (S510).
- the second unique information and the second copyright There is no problem that the physical information is read as incorrect information, and as a result, the number of copies differs.
- a plurality of pieces of audio data having the same song but different attributes may be recorded as the first audio data.
- 2ch audio data and multi-channel audio data of the same music may be recorded in the first recording area.
- each audio data has a different number of channels, it is generally displayed to the user as different contents. For this reason, unique information and copyright management information for these audio data are often different.
- the compressed audio data indicating the same music as the music is recorded as the second audio data
- either the second unique information or the second copyright management information is determined according to a certain criterion. It is recorded so as to be the same as the first unique information and the first copyright management information for one of the first audio data.
- the judgment criterion is “the number of channels”
- the second audio data is 2ch audio data
- the unique information of the first audio data which is 2ch audio data and the copyright management information are recorded
- the second audio data is multi-channel audio data
- the unique information and the copyright management information of the first multi-channel audio data are recorded.
- the first audio data which is a 2-channel and multi-channel linear PCM
- the first recording area is recorded as audio data indicating a certain song
- the second recording area It is assumed that the second audio data of 2ch mp3 indicating the music is recorded.
- the second unique information and the second copyright management information on the second audio data include the same content as the first unique information and the first copyright management information on the 2ch first audio data. Record information.
- the unique information and the copyright management information of the first multi-channel audio data information different from the two-channel audio data is recorded.
- a first reproducing apparatus # 1 that can decode only the first recording area is used as a reproducing apparatus for reading the audio data. If the audio data is read out and copied by a recording device that can store the content specific information and copyright management information, the first audio data of 2ch can be copied twice. Similarly, if the second audio data is read out by using the reproducing device # 2 capable of decoding only the second recording area and copied by the recording device, the second audio data is read out. Data can be copied twice.
- the reproducing device # 3 When the audio data is read out by using the reproducing device # 3 which can decode both the first recording area and the second recording area, and the audio data is copied by the recording device, the reproducing device # 3 uses the second channel of the second channel. One audio data can be read and copied once by the recording device, and then the second audio data can be read and copied once by the recording device. After that, the first unique information and the second unique information relating to the 2ch audio data are the same, and since the number of times of copying is “2”, further copying is prohibited. As a result, the number of copies of the 2ch audio data of song A is two.
- the playback device # 3 may read out the first audio data of 2ch and read out the second audio data by the recording device or copy the second audio data and copy it twice by the recording device.
- the number of copies of the audio data of the two channels of the song A is two. Therefore, the number of copies of 2-channel audio data can be the same regardless of the type of playback device that reads the audio data.
- the first multi-channel audio data is read using playback device # 1 or playback device # 3 capable of decoding the first recording area. Even if the recording device copies the audio data, the number of copies does not change.
- the number of channels is used as a criterion for identifying audio data that makes the unique information and the copyright management information the same, and the same unique information is used for audio data having the same number of channels.
- this criterion may be another criterion such as the number of quantization bits or the sampling frequency.
- the second management information includes information for recording a link relationship between the first audio data and the second audio data
- the unique information of the audio data and the copyright management information are the same.
- the first audio data and the second audio data are linked in the
- the DVD Audio Zone 122 (first recording area) has a concept called a group including one or more contents, and one or more of those groups are recorded.
- the Compressed Audio Zone 124 (second recording area) also has a concept called a group including one or a plurality of contents, and one or more of those groups are recorded.
- the group of the first recording area has a link relationship with a certain group of the second recording area, and the contents included in the group of the first recording area also have the link relation.
- the second management information file includes a group link information table for recording link information between a group in the first recording area and a group in the second recording area.
- the group link information table includes, for each group in the first recording area, group link information for linking to the group and recording information about the group and content in the second recording area. For example, in the group link information # 1, information about a group or content of a second recording area linked to a first group recorded in a first recording area is recorded.
- the group link information includes a link group number and a link music number.
- the link group number contains the group link The group number of the second recording area linked to the group of the first recording area managed by the information is recorded.
- the link group number of the group link information # 1 the group number of the second recording area linked to the first group of the first recording area is recorded.
- the link music number corresponds to all the contents included in the corresponding first recording area group, and among the contents included in the second recording area group specified by the link group number, The music number of the content in the second recording area linked to each content in the first recording area is recorded. For example, if “3” is recorded in the link group number of group link information # 1 and “4” is recorded in link song number # 1, the first group of the first group of DVD Audio Zonel22
- the song in the Compressed Audio Zonel24 that is linked to the song means that it is the fourth song in the third group of the Compressed Audio Zonel24.
- each content of the first recording area and the second recording area linked by the link group information unique information of the corresponding first audio data and second audio data and copyright management The information will be the same.
- "1" is recorded in the copyright compliant flag (the second copyright management information and the first copyright management information have the same copyright restrictions indicated by them).
- unique information or copyright information of the second audio data corresponding to the content in the second recording area is provided.
- the rights management information is the same as the unique information of the first audio data and the copyright management information for any one content according to a certain criterion.
- the criterion may be anything, for example, selecting the first audio data having the same number of channels as the number of channels of the second audio data.
- the audio data corresponding to the content may have different unique information or copyright management information.
- the copyright-compliant flag included in the second management information is decoded, and the copyright-compliant flag is set to "1" (the first If the second copyright management information and the first copyright management information have the same copyright restrictions indicated by them), the link information is decoded and the first copyright management information is linked to the second audio data. Audio data, and copy control based on the first copyright management information and the first unique information. Control may be performed.
- the data used in the present invention is not limited to audio data, but may be other data such as moving image data, still image data, text data, or any combination thereof! /.
- the present invention when a plurality of audio data which are audio data of the same music piece but have different attributes such as a recording method are recorded, unique information and copyright management information of each audio data are included in the audio data. Since the same information is recorded, it is possible to provide an information recording medium in which the number of copies of the music does not change regardless of the reproducing apparatus, and confusion of the user can be avoided.
- the invention according to the present embodiment is a recording device that divides an information recording medium into a plurality of recording areas and records management information, audio data, and copyright management information in each of the recording areas. It is useful when applied to a package media authoring system.
- FIG. 10 is a block diagram showing a functional configuration of the recording device 902 according to the present embodiment.
- the recording device 902 includes a management-related information input unit 903, a copyright-related information input unit 904, a content input unit 905, a recording unit 906, a stream data generation unit 907, and a management information generation unit 908.
- the management information generation unit 908 includes a first management information generation unit 909, a first copyright-related information storage unit 910, a second copyright-related information determination unit 911, and a second management information generation unit 912. Is provided.
- the recording device 902 divides the information recording medium 100 into two recording areas, as in the case of FIG. 1 described above, and the DVD Audio Zone 122 as the first recording area and the Compressed Zone as the second recording area.
- management information, copyright-related information, and audio data are recorded.
- the DVD-Audio Zonel22 records audio data in the Audio Pack
- the Compressed Audio Zonel24 stores the second management information in the copyright-related information such as content-specific information and copyright management information. Audio data is recorded in
- the recording device 902 When recording information to be recorded in the first recording area on the information recording medium 100, the recording device 902 receives the first audio data from the content input unit 905, and outputs the stream data generation unit 907. Output to In addition, the first copyright When the link information is input to the copyright-related information input unit 904, the input copyright-related information is output to the stream data generation unit 907 and the management information generation unit 908.
- the “copyright-related information” is, for example, information including unique information for uniquely specifying audio data, copyright management information such as copy control of the audio data, and the like.
- the stream data generation unit 907 divides the audio data into Audio Packs as shown in Fig. 3 using the input first audio data and the first copyright-related information, and divides the audio data into audio packs.
- the copyright-related information is recorded and converted into the format of stream data recorded in the first recording area. Further, the conversion result is output to the recording unit 906 and recorded on the information recording medium 901. Further, the first copyright-related information output to management information generating section 908 is recorded in first copyright-related information storage section 910.
- first management-related information for managing the handling of the first audio data is input from the management-related information input unit 903, the input first management-related information is used to generate management information. Output to unit 908.
- the first management-related information includes content and group information input by the producer, for example, the number of groups, the number of songs included in each group, or the group names and song names.
- the management information generation unit 908 converts the input first management-related information into a data structure of management information recorded in the first recording area by the first management information generation unit 909. The conversion result is output to the recording unit 906 and recorded on the information recording medium 901.
- the number of groups recorded in the first management information and the number of songs included in each group are used when creating a group link information table of the second management information. To memorize it.
- the audio data is converted to stream data.
- the stream data generation unit 907 converts the input second audio data so as to conform to the format of the audio data recorded in the second recording area. The data is converted, and the conversion result is output to the recording unit 906 and recorded on the information recording medium 901.
- the second copyright-related information on the second audio data is input to the copyright-related information input unit 904, it is output to the management information generation unit 908. Further, when the second management-related information for managing the handling of the second audio data is input to the management-related information input unit 903, it is output to the management information generation unit 908. It should be noted that the second management-related information includes content and group information input by the producer, link relation information between the content in the first recording area and the content in the second recording area, and the like.
- the link relation information is information added to each of the second audio data recorded on the information recording medium 100, and is a source of the second audio data, or This is information indicating the group number (DG) of the first audio data that is a song and the song number (DT) within that group. Based on the link relation information, a group link information table as shown in FIG. 9 is generated. Hereinafter, the recording process of the group link information table will be described with reference to FIG. In FIG. 11, CG means
- CT means the music number of the second audio data in the group number CG of the Compressed Audio Zonel22.
- Gn means a counter of group link information, and “Tn” means a counter of a link music number.
- Gn and ⁇ are initialized, Gn is set to “1” (S1100), and Tn is set to “1” (S1100). S1102).
- second audio data having the same group number (DG) and song number (DT) as Gn and Tn is specified based on the link-related information (S1104).
- the music number (CT) assigned to the specified second audio data is extracted, and the music number (CT) is recorded in the link music number #Tn of the group link information #Gn (S 1106). ). If there is no second audio data to which the group number (DG) and the song number (DT), which are the same numbers as Gn and Tn, exist, the link song number #Tn contains "0". ”Is recorded.
- the above processing is performed for all link music numbers of the group link information #Gn (S1104-S1110). That is, in the DVD Audio Zone 22, the processing is performed for all the songs included in the group having the same number as Gn.
- the group number (CG) assigned to the second audio data finally specified in the above processing is recorded in the link group number of the group link information #Gn (SI 112). If “0” is recorded in all link song numbers of group link information #Gn, “0” is recorded in the link group number.
- Such processing is performed for all the gnoraps included in the DVD Audio Zonel 22 [S1102-S1116].
- the second copyright-related information determination unit 911 determines the copyright-related information regarding each second audio data.
- the copyright-related information includes unique information of the audio data and copyright management information.
- the second copyright-related information determining unit 911 generates the second audio-related information specified by the unique information of the second copyright-related information (S1200) input by the producer.
- the copyright-related information relating to the data (S1202: included) is recorded on the information recording medium (S1204), and the second copyright-related information is stored in the information recording medium.
- the information is output to the second management information generation unit 912. Also, in the copyright compliance flag in this case, information indicating that the second copyright management information is different from the first copyright management information is recorded (S1206).
- the copyright-related information regarding the second audio data which is specified by the unique information of the second copyright-related information input by the creator (S1202: included,,,),
- One of the first copyright-related information recorded in the first copyright-related information storage unit 910 is applied.
- the second copyright-related information determining unit 911 decodes the link-related information input to the management information generating unit 908 (S1208), and the first copyright-related information linked to the second audio data is decoded.
- the audio data is specified (S1210).
- the first copyright-related information storage unit 910 searches for the first copyright-related information relating to the specified first audio data (S1212), and the retrieved first copyright-related information is singular. Judge whether there is more than one. (S1214).
- the first copyright-related information is output to the second management information generating unit 912 as second copyright-related information on the second audio data.
- the first audio data related to any one of the first audio data may be determined based on a certain criterion. Will be selected.
- a certain criterion The quasi refers to, for example, selecting the first copyright-related information relating to the first audio data having the same channel number as the second audio data.
- the second management information is generated based on the input second management-related information and the second copyright-related information so as to conform to the data structure of the management information recorded in the second recording area. I do.
- information indicating that the contents of the second copyright management information and the first copyright management information are the same is recorded in the copyright compliant flag (S1218).
- the second management information generated in this way is output to the recording unit 906 and recorded on the information recording medium 901.
- the unique information regarding the second audio data and the copyright management information include the linked first audio data.
- the same ISRC and the number of permitted copies are given. Therefore, even if the audio data is read out using various playback devices at the time of copying and copied by the recording device, the number of times the linked audio data is copied from the information recording medium is the same. In other words, even if a playback device that cannot decode the power in the first recording area, a playback device that can decode only the second recording area, or a playback device that can decode the first and second recording areas is used, The number of copies of the attached audio data indicating the same content can be the same.
- the information is converted into the first copyright data related to the first audio data linked by the link related information.
- the copyright compliant flag may record information indicating that the second copyright management information and the first copyright management information have the same content.
- the data used in the present invention may be other data such as moving image data, still image data, text data, or any combination thereof, regardless of audio data! / ,.
- the present invention it is possible to record a plurality of audio data indicating the same song but having different attributes, and furthermore, the number of copies of the song can be the same regardless of various playback devices.
- An information recording medium can be created.
- the first audio data, the first management information, and the first copyright-related information are recorded in the first recording area of the information recording medium, and the first audio data is recorded in the second recording area. If the second audio data, the second management information, and the second copyright-related information are recorded, the reproducing device can reproduce or read out and output the audio data recorded in both recording areas. It is.
- the first audio data and the second audio data are the same music, but have different attributes such as the encoding method.
- the copyright-related information on the first audio data is recorded in a file in which the first audio data is recorded, and the copyright-related information on the second audio data is the second management information and the second information. Recorded in the same file.
- the copyright-related information includes unique information for specifying the audio data and copyright management information such as the number of permitted copies.
- FIG. 13 is a diagram of the reproducing apparatus according to the present invention
- FIG. 14 is a flowchart showing the flow of the processing.
- the playback device 1110 includes a reading unit 1112, a data extraction unit 1113, a content output unit 1114, a copyright-related information output unit 1115, a management information decryption unit 1116, a first management information decryption unit 1117, and a It comprises a second management information decryption unit 1118 and a copyright comparison unit 1119.
- the management information decryption unit 1116 includes a first management information decryption unit 1117, a second management information decryption unit 1118, a copyright comparison unit 1119, and an instruction input unit 1120.
- the reading unit 1112 reads a file in which the first management information is recorded and a file in which the second management information is recorded, and reads the management information.
- the management information decrypting unit 1116 sends the first management information and the second management information to the first management information, respectively.
- the management information decryption unit 1117 and the second management information decryption unit 1118 decrypt the data, and determine whether or not the audio data corresponding to the designated song is managed by the respective management information (S1402). As a result of the determination, if the corresponding audio data is managed only by one of the management information (S1402: managed only by one management information), the corresponding audio data and its copyright related information are read out, Output for copying (S1404).
- the reading unit 1112 reads the audio data, and outputs it to the data extracting unit 1113.
- the data extraction unit 1113 reads the first copyright-related information recorded in the audio data, and outputs it to the copyright comparison unit 1119 (1408).
- the management information decryption unit 1116 decrypts the second management information, reads out the second copyright related information on the corresponding second audio data, and outputs it to the copyright comparison unit 1119 (S1410) ).
- the copyright comparison unit 1119 determines whether the unique information included in the first and second copyright-related information has the same power (S1412). As a result of the discrimination, if they are the same unique information (S1412: the same), one of the copyright-related information is selected according to a certain condition, and the copyright-related information and audio data are output.
- the number of permitted copies included in each piece of copyright-related information is compared (S1414), and the piece of copyright-related information having the larger number of times is selected, and the copyright-related information and the corresponding audio data are compared.
- Output for copying (S1416).
- the unique information included in the selected copyright-related information and the number of permitted copies are output by the copyright-related information output unit 1115, and the recording device records the audio data to which the corresponding audio data has already been copied.
- the corresponding audio data is read by the reading unit 1112, only the content is extracted by the data extracting unit 1113, and the content output unit 1114 outputs the extracted content data.
- the copy control is performed so that the audio data with the larger number of permitted copies is copied. If the number of copies is smaller!
- the copyright compliant flag included in the second management information includes the second copyright information.
- the first copyright management information and the first unique Copying may be controlled based on the information.
- the unique information included in the first and second copyright-related information is different (S1412: different), or if the unique information and the number of permitted copies are the same (S1414: same), the condition is satisfied.
- only the audio data corresponding to one of the copyright-related information is copied (S1418). For example, if you want to copy at high speed, select and copy audio data with high compression ratio, or if you want to copy high-quality sound data, use uncompressed audio data or compressed data. Low rate! Sometimes audio data is selected and copied.
- both the first and second audio data are copied according to the respective copyright management information, and a certain music piece is calculated by summing the total number of permitted copies permitted by the respective copyright management information. It is possible to prevent copying for the number of times. As a result, compared to a playback device that can output only one of the first audio data and the second audio data, it is possible to prohibit a large number of copies from being made possible, The number of copies does not differ significantly depending on the playback device!
- information is provided in which audio data of the same music but different attributes are recorded in three or more recording areas, and copyright-related information is recorded for each audio data. It can also be applied to recording media.
- the copyright-related information includes playback restriction information
- the playback restriction information assigned to each piece of audio data is compared, and there is an advantage for the user. It is also possible to select and play back audio data to which certain playback restriction information has been added. For example, when a plurality of pieces of audio data indicating the same tune but having different numbers of permitted reproductions are recorded, audio data having a large number of permitted reproductions is selected and reproduced.
- the present invention assumes audio data as recording information, but it may be still image data, moving image data, text data, or the like.
- the present invention may be an information processing apparatus having both functions of the above-mentioned reproducing apparatus and recording apparatus.
- the information recording medium according to the present invention has an effect that the number of copies for the same content can be equal regardless of the function of the reproducing apparatus.
- the recording apparatus has a function of generating an information recording medium having an effect of equalizing the number of times of copying, and has a function of recording contents on a CD disk, a DVD disk, a Blu-ray disk, a semiconductor memory, and a hard disk.
- a CD disk a DVD disk
- a Blu-ray disk a semiconductor memory
- a hard disk Useful for saling systems or recording equipment.
- the reproducing apparatus when reading out audio data for copying from an information recording medium in which a plurality of audio data of the same music but having different attributes are recorded! It has the effect of automatically selecting large audio data, and is useful for playback devices that play CD disks, DVD disks, Blu-ray disks, semiconductor memories, and hard disks.
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Multimedia (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Management Or Editing Of Information On Record Carriers (AREA)
- Television Signal Processing For Recording (AREA)
- Storage Device Security (AREA)
Abstract
Description
Claims
Priority Applications (3)
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EP05719713A EP1722363A1 (en) | 2004-03-01 | 2005-03-01 | Information recording medium and information processing device |
JP2006519382A JPWO2005083703A1 (ja) | 2004-03-01 | 2005-03-01 | 情報記録媒体および情報処理装置 |
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WO (1) | WO2005083703A1 (ja) |
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JP2003179582A (ja) * | 2001-11-16 | 2003-06-27 | Matsushita Electric Ind Co Ltd | 複数の冗長度バージョンを用いた並べ替え方式によるarq再送ならびにそのための受信装置および送信装置 |
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JP2009514033A (ja) * | 2005-10-31 | 2009-04-02 | エスケーテレコム株式会社 | オーディオデータパケットフォーマット及びその復調方法とコーデック設定誤り修正方法及びこれを遂行する移動通信端末機 |
US8195470B2 (en) | 2005-10-31 | 2012-06-05 | Sk Telecom Co., Ltd. | Audio data packet format and decoding method thereof and method for correcting mobile communication terminal codec setup error and mobile communication terminal performance same |
JP2007148483A (ja) * | 2005-11-24 | 2007-06-14 | Sharp Corp | コンテンツ再生装置、著作権管理装置、コンテンツ再生管理システム、プログラム、及び記録媒体 |
JP2007172244A (ja) * | 2005-12-21 | 2007-07-05 | Sharp Corp | コンテンツ管理システム、コンテンツ記録再生装置、関連情報取得用プログラム、及び、関連情報取得装置 |
JP2007272519A (ja) * | 2006-03-31 | 2007-10-18 | Ntt Comware Corp | ドキュメント暗号化制御装置及びドキュメント暗号化制御方法 |
JP2008033491A (ja) * | 2006-07-27 | 2008-02-14 | Matsushita Electric Ind Co Ltd | コンテンツ移動管理システム |
JP2008047226A (ja) * | 2006-08-17 | 2008-02-28 | Sony Corp | コンテンツ記録装置、コンテンツ記録方法、記録媒体、およびプログラム |
Also Published As
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JPWO2005083703A1 (ja) | 2007-11-29 |
EP1722363A1 (en) | 2006-11-15 |
US20070174570A1 (en) | 2007-07-26 |
CN1926623A (zh) | 2007-03-07 |
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