WO2002093825A1 - Content reproduction apparatus, content distribution server, and content distribution system - Google Patents
Content reproduction apparatus, content distribution server, and content distribution system Download PDFInfo
- Publication number
- WO2002093825A1 WO2002093825A1 PCT/JP2001/004045 JP0104045W WO02093825A1 WO 2002093825 A1 WO2002093825 A1 WO 2002093825A1 JP 0104045 W JP0104045 W JP 0104045W WO 02093825 A1 WO02093825 A1 WO 02093825A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- content
- decryption key
- recording medium
- distribution server
- content distribution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- 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
-
- 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
-
- 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
- G11B20/00166—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised contents recorded on or reproduced from a record carrier, e.g. music or software
-
- 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
- G11B20/00166—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised contents recorded on or reproduced from a record carrier, e.g. music or software
- G11B20/00173—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised contents recorded on or reproduced from a record carrier, e.g. music or software wherein the origin of the content is checked, e.g. determining whether the content has originally been retrieved from a legal disc copy or another trusted source
-
- 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
- G11B20/00166—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised contents recorded on or reproduced from a record carrier, e.g. music or software
- G11B20/00181—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised contents recorded on or reproduced from a record carrier, e.g. music or software using a content identifier, e.g. an international standard recording code [ISRC] or a digital object identifier [DOI]
-
- 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
- G11B20/00217—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 the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source
- G11B20/00224—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 the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is obtained from a remote server
-
- 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
- G11B20/0071—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a purchase action
-
- 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
- G11B20/00855—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a step of exchanging information with a remote server
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
- H04L9/0819—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
- H04L9/083—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) involving central third party, e.g. key distribution center [KDC] or trusted third party [TTP]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
- H04L2209/60—Digital content management, e.g. content distribution
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/20—Information technology specific aspects, e.g. CAD, simulation, modelling, system security
Definitions
- the present invention relates to a content reproducing device for reproducing digital content, a content distribution server for distributing digital content, and a content distribution system.
- the conventional content distribution system is configured as described above, so if you download digital content such as music data, you can play music data, etc. As content was large, the downtime required a long time due to the large amount of data, and there were problems such as increased communication costs.
- the present invention has been made to solve the above-described problems, and has as its object to provide a content reproducing apparatus capable of reproducing digital content without downloading a large amount of data.
- Another object of the present invention is to provide a content distribution server and a content distribution system capable of distributing digital content without incurring high communication charges. Disclosure of the invention
- the content reproducing apparatus is provided with a receiving means for receiving the decryption key from the content distribution server when the key requesting means requests the issuance of the decryption key, and recording using the decryption key. This is to decrypt the encrypted data recorded on the medium.
- the encrypted data recorded on the recording medium is the music data.
- a content reproducing apparatus is provided with reproducing means for reproducing music data decrypted by the decrypting means.
- the content distribution server when receiving a request for issuing a decryption key from a content reproduction device of a user who has received free distribution of a recording medium, transmits the decryption key to the content reproduction device. It is.
- the content distribution server is provided with a price collecting means for collecting a price from a user.
- the content distribution server according to the present invention is designed to pay a distribution fee to a recording medium distribution commissioner.
- the content distribution server When receiving the request for issuing the decryption key from the content playback device, the content distribution server according to the present invention receives the encrypted serial number recorded on the recording medium from the content playback device, and receives the serial number.
- the number of the recording medium distribution contractor is specified based on the number.
- the encrypted data recorded on the recording medium is music data.
- the content distribution server is such that, when a request for issuing a decryption key is received before the release date of a new musical score, the decryption key is transmitted on the release date of the new musical score.
- the content distribution system is arranged such that, when a content decryption key issuance request is received from a content reproduction device of a user who has received free distribution of a recording medium, the decryption key is transmitted to the content reproduction device. It is a thing.
- FIG. 1 is a configuration diagram showing a content distribution system according to Embodiment 1 of the present invention.
- FIG. 2 is a configuration diagram showing the content reproducing device 3.
- FIG. 3 is a configuration diagram showing the content distribution server 1.
- FIG. 4 is an explanatory diagram showing a serial number assigned to music data.
- FIG. 5 is an explanatory diagram showing the relationship between the distribution destination of the CDROM 21 and the serial number of the music data.
- FIG. 6 is a configuration diagram showing a content reproduction device 3 of a content distribution system according to Embodiment 2 of the present invention.
- FIG. 1 is a configuration diagram showing a content distribution system according to Embodiment 1 of the present invention.
- reference numeral 1 denotes a request for the issuance of a free distribution of a CDROM (recording medium) on which music data, which is encrypted data, is recorded.
- a content distribution server that sends the reproduction permission authentication key to the content reproduction device 3
- 2 is a distribution contractor such as a convenience kiosk that distributes CDROM containing music data for free
- 3 is reproduction
- This is a content playback device that plays back music data that has been decrypted.
- FIG. 2 is a configuration diagram showing the content reproduction device 3;
- 1 is a computer that reads the music data recorded in the CDROM and transfers the music data to the music playback terminal 1 2.
- 1 2 requests the issuance of a playback permission authentication key, and the content distribution server 1 Upon receiving the playback permission authentication key, the music playback terminal decrypts the music data using the playback permission authentication key and plays the music data.
- 2 1 is CD ROM where music is recorded overnight, 2 2 is ⁇ 01101 ⁇ 2
- a music data overnight transfer unit that reads the music data recorded in 1 and transfers the music data to the music playback terminal 1
- 2 3 is a music data reception unit that receives music data
- 2 4 is a music data reception unit
- a music de night storage section that stores nights
- 26 is a key storage unit for storing the reproduction permission authentication key received by the mobile phone unit 25
- 27 is an encryption / decryption unit (decryption means) for decrypting music data using the reproduction permission authentication key.
- Reference numeral 28 denotes a music reproduction unit (reproduction means) for reproducing music data decrypted by the encryption / decryption unit 27, and reference numeral 29 denotes a speaker.
- FIG. 3 is a block diagram showing the content distribution server 1.
- reference numeral 31 denotes a distribution consignment unit (distribution consignment means) that entrusts free distribution of CDR OM 21 and 32 denotes free distribution of CDR OM 21.
- a key transmission unit for transmitting the playback permission authentication key to the content playback device 3
- 33 receives a payment from the user
- a collection section (payment means) that pays a distribution fee to the distribution commissioner of CDR OM 21 and a CD 34
- a serial number management unit that manages the relationship between the distribution destination of R 0 M 21 and the music data serial number.
- a music company such as a record company expresses a new music piece before release in music data such as MP3 (MPEGLayer3), and records the music data in CDR0M21.
- MP3 MPEGLayer3
- the music data recorded on the CDROM 21 is prohibited from being reproduced by encryption, and a serial number is assigned to each music data as shown in FIG.
- a serial number is assigned to each music data as shown in FIG.
- a different serial number will be assigned if the CDR 0 M 21 recorded is different.
- the distribution commissioning department 31 of the content distribution server 1 commissions a free distribution of the CDROM 21 to a distribution commissioning company 2 such as a convenience kiosk.
- Convenience stores and kiosks commissioned will place CDR0M21 in front of cash registers, for example, to allow users to take their CDROM 21 back with them. Also, if the distributor 2 is a magazine editor, attach CDROM 21 as an appendix to the magazine so that users can obtain it.
- the music data transfer section 22 of the personal computer 11 reads the music data recorded on the CDROM 21. Of the one or more music files recorded on CD ROM 21, for example, the user rarely plays music file B. If desired, the music data transfer unit 22 transfers the music data B to the music playback terminal 12.
- the music data receiving section 23 of the music playback terminal 12 receives the music data B transferred from the personal computer 11 and stores the music data B in the music data storage section 24.
- the mobile phone section 25 of the music reproduction terminal 12 Upon receiving from the user a request to issue a reproduction permission authentication key used for decrypting music data B, the mobile phone section 25 of the music reproduction terminal 12 issues a reproduction permission authentication key to the content distribution server 1.
- Request. The issuance request includes information such as the serial number of the music data B in addition to the telephone number of the mobile phone unit 25.
- the price collection unit 33 of the content distribution server 1 collects the price from the user by performing a credit settlement process or the like.
- the key transmission unit 32 transmits the reproduction permission authentication key used for decrypting the music data B to the content reproduction device 3. However, if a playback permission authentication key is requested before the new music release date, the playback permission authentication key is transmitted on the new music release date. Otherwise, send the authorization key as soon as possible o
- the serial number management unit 34 manages the relationship between the distribution destination of the CDROM 21 and the serial number of the music data. 0 Identify the distribution contractor 2 that distributed M 21. For example, if the serial number of music data B is "B00001121", it is specified that the distributor 2 is convenience store A.
- the serial number management unit 3 4 identifies the distribution contractor 2 Then, the collection section 3 pays the distribution commission to the distribution consignor 2 concerned.
- the mobile phone section 25 of the music playback terminal 12 receives the playback permission authentication key transmitted from the key transmission section 32 and stores the playback permission authentication key in the key storage section 26.
- the encryption / decryption unit 27 decrypts the music data B using the reproduction permission authentication key.
- the music reproducing unit 28 reproduces the music data decrypted by the ⁇ decoding unit 27 and outputs the music from the speaker 29.
- the reproduction permission authentication key is received from the content distribution server 1, and the music data recorded in the CDR0M21 is recorded using the reproduction permission authentication key. Since the encryption is configured to be decrypted in the evening, music data can be played back without downloading the large amount of music data itself. Therefore, it is possible to reduce the communication fee and to reduce the network traffic even when all the music is downed on the new music release date.
- FIG. 6 is a configuration diagram showing a content reproduction device 3 of the content distribution system according to Embodiment 2 of the present invention.
- the same reference numerals as those in FIG. 1 denote the same or corresponding parts, and a description thereof will be omitted.
- 41 is a key collection unit (key request means, receiving means) for requesting issuance of a reproduction permission authentication key and receiving a reproduction permission authentication key from the content distribution server 1, and 42 is a decrypted music data. Use a hard disk to store the evening.
- the personal computer 11 transfers the encrypted music data to the music playback terminal 12 and the music playback terminal 12 decrypts the music data.
- the personal computer 11 decrypts the music data by obtaining a reproduction permission authentication key from the content distribution server 1 via, for example, the Internet, and then decrypts the decrypted music data. The transfer may be made to the playback terminal 12.
- the content playback device 3 is constituted by the personal computer 11 and the music playback terminal 12.
- the present invention is not limited to this.
- the content reproduction device 3 may be constituted by only the content reproduction device 3.
- the content reproduction device is suitable for receiving digital content such as music data and reproducing the digital content.
- the content distribution server and the content distribution system according to the present invention are suitable for efficiently distributing digital content such as music data.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Reverberation, Karaoke And Other Acoustics (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- Electrophonic Musical Instruments (AREA)
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP01930161A EP1296477A1 (en) | 2001-05-15 | 2001-05-15 | Content reproduction apparatus, content distribution server, and content distribution system |
| US10/332,772 US20030142827A1 (en) | 2001-05-15 | 2001-05-15 | Contents reproducing apparatus, content distribution server, and content distribution system |
| PCT/JP2001/004045 WO2002093825A1 (en) | 2001-05-15 | 2001-05-15 | Content reproduction apparatus, content distribution server, and content distribution system |
| CN01812779A CN1442005A (zh) | 2001-05-15 | 2001-05-15 | 内容再生装置、内容分发服务器和内容分发系统 |
| JP2002590576A JPWO2002093825A1 (ja) | 2001-05-15 | 2001-05-15 | コンテンツ再生装置、コンテンツ配布サーバ及びコンテンツ配布システム |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2001/004045 WO2002093825A1 (en) | 2001-05-15 | 2001-05-15 | Content reproduction apparatus, content distribution server, and content distribution system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2002093825A1 true WO2002093825A1 (en) | 2002-11-21 |
Family
ID=11737318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2001/004045 Ceased WO2002093825A1 (en) | 2001-05-15 | 2001-05-15 | Content reproduction apparatus, content distribution server, and content distribution system |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20030142827A1 (ja) |
| EP (1) | EP1296477A1 (ja) |
| JP (1) | JPWO2002093825A1 (ja) |
| CN (1) | CN1442005A (ja) |
| WO (1) | WO2002093825A1 (ja) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1607589A (zh) * | 2003-10-13 | 2005-04-20 | 皇家飞利浦电子股份有限公司 | 光盘、播放光盘的播放器及其播放方法 |
| JP2006004473A (ja) * | 2004-06-15 | 2006-01-05 | Sony Corp | コンテンツ記録媒体、再生許可情報取得方法、コンテンツ再生方法およびコンテンツ再生装置 |
| US7519832B2 (en) * | 2004-11-29 | 2009-04-14 | Magix Ag | System and method of creating secure encrypted digital media files from a base media work for additional defined processing |
| KR101216070B1 (ko) * | 2005-01-19 | 2012-12-26 | 엘지전자 주식회사 | 로컬 스토리지를 이용한 기록매체 재생방법 및 재생장치,기록매체 |
| US7975312B2 (en) * | 2007-01-08 | 2011-07-05 | Apple Inc. | Token passing technique for media playback devices |
| KR20140077821A (ko) * | 2012-12-14 | 2014-06-24 | 삼성전자주식회사 | 홈 네트워크 시스템에서 컨텐츠 백업 장치 및 방법 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07295674A (ja) * | 1994-04-28 | 1995-11-10 | Nippon Telegr & Teleph Corp <Ntt> | 情報流通装置および方法 |
| JPH08102735A (ja) * | 1994-09-30 | 1996-04-16 | Toshiba Corp | 電子文書処理方法 |
| JPH1127252A (ja) * | 1997-07-07 | 1999-01-29 | Hitachi Ltd | 鍵管理システム、鍵管理装置、情報暗号化装置、情報復号化装置、およびプログラムを記憶した記憶媒体 |
| JP2000113066A (ja) * | 1998-10-09 | 2000-04-21 | Fujitsu Ltd | ディジタルコンテンツの流通管理方法およびシステム |
| JP2000196585A (ja) * | 1998-10-08 | 2000-07-14 | Matsushita Electric Ind Co Ltd | コンテンツを記録した記録媒体、デジタルデ―タ記録装置、デジタルデ―タ再生装置、パッケ―ジを作成するコンテンツパッケ―ジング装置、コンテンツ再生装置、コンピュ―タ読み取り可能な記録媒体、記録方法、再生方法、パッケ―ジング方法、コンテンツパッケ―ジング装置と、コンテンツ再生装置とからなるシステム。 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO302388B1 (no) * | 1995-07-13 | 1998-02-23 | Sigurd Sigbjoernsen | Fremgangsmåte og anordning for å beskytte programvare mot bruk uten tillatelse |
| US5999622A (en) * | 1995-11-22 | 1999-12-07 | Microsoft Corporation | Method and apparatus for protecting widely distributed digital information |
| US6526456B1 (en) * | 1996-07-01 | 2003-02-25 | David Ian Allan | Distribution and controlled use of software products |
| JP4032203B2 (ja) * | 1999-10-25 | 2008-01-16 | ソニー株式会社 | 情報記録媒体の再生方法、再生装置、情報記録媒体の管理方法 |
| CN1213606C (zh) * | 2000-04-28 | 2005-08-03 | 英特尔公司 | 提供内容中断 |
| US7174568B2 (en) * | 2001-01-31 | 2007-02-06 | Sony Computer Entertainment America Inc. | Method and system for securely distributing computer software products |
-
2001
- 2001-05-15 WO PCT/JP2001/004045 patent/WO2002093825A1/ja not_active Ceased
- 2001-05-15 JP JP2002590576A patent/JPWO2002093825A1/ja active Pending
- 2001-05-15 EP EP01930161A patent/EP1296477A1/en not_active Withdrawn
- 2001-05-15 US US10/332,772 patent/US20030142827A1/en not_active Abandoned
- 2001-05-15 CN CN01812779A patent/CN1442005A/zh active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07295674A (ja) * | 1994-04-28 | 1995-11-10 | Nippon Telegr & Teleph Corp <Ntt> | 情報流通装置および方法 |
| JPH08102735A (ja) * | 1994-09-30 | 1996-04-16 | Toshiba Corp | 電子文書処理方法 |
| JPH1127252A (ja) * | 1997-07-07 | 1999-01-29 | Hitachi Ltd | 鍵管理システム、鍵管理装置、情報暗号化装置、情報復号化装置、およびプログラムを記憶した記憶媒体 |
| JP2000196585A (ja) * | 1998-10-08 | 2000-07-14 | Matsushita Electric Ind Co Ltd | コンテンツを記録した記録媒体、デジタルデ―タ記録装置、デジタルデ―タ再生装置、パッケ―ジを作成するコンテンツパッケ―ジング装置、コンテンツ再生装置、コンピュ―タ読み取り可能な記録媒体、記録方法、再生方法、パッケ―ジング方法、コンテンツパッケ―ジング装置と、コンテンツ再生装置とからなるシステム。 |
| JP2000113066A (ja) * | 1998-10-09 | 2000-04-21 | Fujitsu Ltd | ディジタルコンテンツの流通管理方法およびシステム |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1296477A1 (en) | 2003-03-26 |
| CN1442005A (zh) | 2003-09-10 |
| JPWO2002093825A1 (ja) | 2004-09-02 |
| US20030142827A1 (en) | 2003-07-31 |
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