WO2000023993A1 - Methode de copie evitant la duplication bit a bit de donnees numeriques et dispositif de lecture pour la mise en oeuvre de la methode - Google Patents

Methode de copie evitant la duplication bit a bit de donnees numeriques et dispositif de lecture pour la mise en oeuvre de la methode Download PDF

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Publication number
WO2000023993A1
WO2000023993A1 PCT/FR1999/002425 FR9902425W WO0023993A1 WO 2000023993 A1 WO2000023993 A1 WO 2000023993A1 FR 9902425 W FR9902425 W FR 9902425W WO 0023993 A1 WO0023993 A1 WO 0023993A1
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WO
WIPO (PCT)
Prior art keywords
digital data
bit
medium
reading device
serial number
Prior art date
Application number
PCT/FR1999/002425
Other languages
English (en)
French (fr)
Inventor
Teddy Furon
Sylvain Chevreau
Eric Diehl
Original Assignee
Thomson Multimedia
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9531720&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2000023993(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Thomson Multimedia filed Critical Thomson Multimedia
Priority to EP99947521A priority Critical patent/EP1123545B1/fr
Priority to PL99347328A priority patent/PL347328A1/xx
Priority to AU60936/99A priority patent/AU764069B2/en
Priority to HU0104066A priority patent/HU229542B1/hu
Priority to AT99947521T priority patent/ATE503249T1/de
Priority to DE69943300T priority patent/DE69943300D1/de
Priority to BR9914622-3A priority patent/BR9914622A/pt
Priority to JP2000577658A priority patent/JP4812939B2/ja
Publication of WO2000023993A1 publication Critical patent/WO2000023993A1/fr

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
    • G11B20/00188—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised devices recording or reproducing contents to/from a record carrier
    • G11B20/00195—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised devices recording or reproducing contents to/from a record carrier using a device identifier associated with the player or recorder, e.g. serial numbers of playback apparatuses or MAC addresses
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/28—Indicating or preventing prior or unauthorised use, e.g. cassettes with sealing or locking means, write-protect devices for discs
    • G11B23/283—Security features, e.g. digital codes
    • G11B23/284—Security features, e.g. digital codes on the 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
    • G11B20/00094—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers
    • 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
    • G11B20/00094—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers
    • G11B20/00115—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers wherein the record carrier stores a unique medium identifier
    • 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
    • G11B20/00094—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers
    • G11B20/00123—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers the record carrier being identified by recognising some of its unique characteristics, e.g. a unique defect pattern serving as a physical signature of the 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
    • 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
    • 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
    • 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
    • G11B20/00253—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 stored on the record carrier
    • G11B20/00347—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 stored on the record carrier wherein the medium identifier is used as a key
    • 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
    • G11B2220/2545—CDs
    • 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/90—Tape-like record carriers

Definitions

  • the present invention relates to a method of copying avoiding bit-by-bit duplication of digital data originating from a first source on a medium. It also relates to a device used to implement this method.
  • Digital data has the property of being able to be copied without significant loss of quality. Indeed, copying consists in transmitting from the source to the recording device a series of binary information, namely "1" and "0". Errors that usually occur during copying are easily corrected using well known error correction methods. Thus, when an information medium or a data source contains digital data, it is relatively simple to record them identically on a recordable medium.
  • the supplier provides the digital data medium such as the floppy disk in the case of software, with a mark prohibiting any copying.
  • Another way of protecting digital data against copying is to provide it with a watermark, that is to say auxiliary data attached to the digital data.
  • the tattoo must be non-changeable and non-erasable.
  • the data is read using a private key that identifies the watermark.
  • a private key is required to replace the tattoo on the copy, otherwise the copy becomes illegal since it has no tattoo.
  • Digital data copied without watermarking is no longer read by the reader because it does not identify watermarking where it should find one. Thus, the tattoo does not allow to make a copy without the private key.
  • These known methods of copy protection are generally effective when the medium is processed by compliant reading or recording devices. However, these methods do not avoid duplication by a hacker who creates a duplicate or clone as similar as possible to the original by performing what is called a copy bit-by-bit.
  • the present invention aims to provide a method of copying avoiding unauthorized duplication of digital data from a first source on a medium, this method not allowing bit-by-bit copying of digital information.
  • the present invention also aims to provide a reading device comprising circuits allowing the implementation of said method.
  • the subject of the present invention is a method of copying avoiding the bit-by-bit duplication of digital data originating from a digital data source on a medium, characterized in that the medium comprises a serial number used to format the data digital from said digital data source before writing them on said medium.
  • the serial number is recorded in an unforgeable manner on the support during its manufacture.
  • the serial number is a unique number for each medium or has a low probability of being common to two media.
  • the digital data to be duplicated is formatted using a secret key algorithm such as D.E.S. or with a public key such as R.S.A., the key being a function of the serial number.
  • the present invention also relates to a method of copying avoiding bit-by-bit duplication of digital data read by a reading device and copied onto a medium, characterized in that the medium has a serial number and in that the copying method involves the following steps:
  • the formatting step is carried out in the reading device.
  • Said reading device also comprises means making it possible to read the medium containing the formatted digital data.
  • the method before performing the duplication of the digital data, includes a step of verifying authorization for copying.
  • the present invention also relates to a reading device comprising a formatting circuit allowing the implementation of said copying methods described above.
  • Figure 1 is a schematic view in the form of blocks of a reading device and a recording device for copying a first support on a second support.
  • the present invention will be described with reference to the reading of digital data recorded on a digital medium such as a DVD for Digital Versatile Disc and copied on a second blank medium also consisting of a DVD which in this case must be recordable, know a DVD-R.
  • a digital medium such as a DVD for Digital Versatile Disc and copied on a second blank medium also consisting of a DVD which in this case must be recordable, know a DVD-R.
  • other sources of digital information can be used, in particular digital information originating from a decoder and sent by a "broadcaster” or digital information stored on media such as a magnetic tape, a recordable or non-recordable optical disc, namely a CD, CD-R, CD-RW, DVD, DVD-R, a magneto-optical disc or similar.
  • the recording medium consists of a recordable magnetic tape, a CD-R, a CD-RW, a DVD-R or a magneto-optical disc making it possible to store audio and /
  • the copying method according to the present invention makes it possible to copy the digital information D recorded on a DVD 1 using a reading device 2 provided with a formatting circuit 3 and the data FD which can be duplicated, are recorded on a DVD-R 4 inserted in a recording device 5.
  • the DVD-R 4 constituted by a blank DVD-R includes a serial number which is recorded in an unforgeable manner during the manufacture of the DVD-R.
  • This serial number which is chosen so as to be unique or to have a very low probability of being present on two different media, is stored in a buried area of the disc such as the area entitled "lead-in area" in English. , namely the start of the runway. As explained in more detail below, this serial number is used to format the digital data read from the original DVD 1.
  • the data read from DVD 1 by the reading device 2 is sent on a formatting circuit 3 which performs formatting of the data using the serial number read from the blank DVD-R .
  • a formatting circuit 3 which performs formatting of the data using the serial number read from the blank DVD-R .
  • the serial number will be 56 bits. However, the number of bits in the serial number is given as an example. Indeed, it is possible to apply the invention to media whose serial numbers have lengths greater than or less than 56 bits. In this case, truncation or channel coding can be applied to bring these serial numbers to the correct length. If the key is, for security reasons, a function of the serial number, it can be obtained as follows:
  • NS is the serial number of the recording medium
  • PS is the parameter stored in the compliant reading devices in a secure manner
  • a hashing function is applied such as the SHA-1 function (standard of the National Institute of Standards and Technologies) and the word SHA (NS / PS) having a length of 64 bits is obtained, and
  • the length of the binary words NS and PS is not fixed, because SHA-1 does not require a precise length for the input word.
  • the f function adapts to any length of serial number.
  • the DVD-R 4 thus lawfully copied can be read by the reading device 2 and the original digital data is recovered using the corresponding decryption algorithm.
  • This public key algorithm is an algorithm asymmetric which does not allow, when we know the public key, to easily copy the formatted data when they are read by the reading device 2.
  • the data on the copy DVD-R does not have the same structure as the data on the original DVD, so it is not possible to recover it with a reading device other than a compliant reading device.
  • the reading device of the present invention does not find the original digital information and will not read it.
  • the method of copying can be preceded by a step of verification of authorization for copying such as that described in French patent application No. 98 11860 filed on September 23, 1998 in the name of THOMSON multimedia. and entitled "Protection against copying of digital data stored on an information medium”.
  • This copy authorization check applies to an information medium comprising a first identification of an encryption of digital data, a second identification of a watermark of digital data, a first determination of a first mark if the encryption and the tattoo could be identified, a third identification of a type of information medium, a second determination of a second mark if the first mark could be determined and if a determined type of information medium could be identified, a fourth identification of cryptographic signature data accompanying the digital data, a third determination of a third mark if the second mark could be determined and if a cryptographic signature data could be identified, a first issue of a permission digital copy of the digital data if the third mark could be determined.
  • the device 2 for reading digital data which can be a DVD player, a decoder, a CD player or the like, comprises a formatting circuit 3 essentially constituted by an integrated circuit including all the means necessary for carrying out the algorithm chosen for formatting and making it possible to store certain data such as a secret key or copy authorization means that cannot be forged.

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Storage Device Security (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
PCT/FR1999/002425 1998-10-19 1999-10-11 Methode de copie evitant la duplication bit a bit de donnees numeriques et dispositif de lecture pour la mise en oeuvre de la methode WO2000023993A1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP99947521A EP1123545B1 (fr) 1998-10-19 1999-10-11 Methode de copie evitant la duplication bit a bit de donnees numeriques et dispositif de lecture pour la mise en oeuvre de la methode
PL99347328A PL347328A1 (en) 1998-10-19 1999-10-11 Copy method avoiding bit-to-bit duplication of digital data and reading device for implementing same
AU60936/99A AU764069B2 (en) 1998-10-19 1999-10-11 Copy method avoiding bit-to-bit duplication of digital data and reading device for implementing same
HU0104066A HU229542B1 (en) 1998-10-19 1999-10-11 Copy method avoiding bit-to-bit duplication of digital data and reading device for implementing same, as well as storage medium for digital data
AT99947521T ATE503249T1 (de) 1998-10-19 1999-10-11 Kopierverfahren welches die bitgenaue duplikation von digitalen daten vermeidet und lesevorrichtung für dieses verfahren
DE69943300T DE69943300D1 (de) 1998-10-19 1999-10-11 Kopierverfahren welches die bitgenaue duplikation für dieses verfahren
BR9914622-3A BR9914622A (pt) 1998-10-19 1999-10-11 Método para copiar que evita a duplicação bit por bit de dados digitais e dispositivos de leitura para implementar o método
JP2000577658A JP4812939B2 (ja) 1998-10-19 1999-10-11 デジタルデータのビット対ビットの複製を防止するコピー方法及び読取装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9813074A FR2784830A1 (fr) 1998-10-19 1998-10-19 Methode de copie evitant la duplication non-autorisee de donnees numeriques et dispositif de lecture pour la mise en oeuvre de la methode
FR98/13074 1998-10-19

Publications (1)

Publication Number Publication Date
WO2000023993A1 true WO2000023993A1 (fr) 2000-04-27

Family

ID=9531720

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR1999/002425 WO2000023993A1 (fr) 1998-10-19 1999-10-11 Methode de copie evitant la duplication bit a bit de donnees numeriques et dispositif de lecture pour la mise en oeuvre de la methode

Country Status (14)

Country Link
EP (1) EP1123545B1 (US07585860-20090908-C00162.png)
JP (1) JP4812939B2 (US07585860-20090908-C00162.png)
KR (1) KR100756351B1 (US07585860-20090908-C00162.png)
CN (1) CN1324599C (US07585860-20090908-C00162.png)
AT (1) ATE503249T1 (US07585860-20090908-C00162.png)
AU (1) AU764069B2 (US07585860-20090908-C00162.png)
BR (1) BR9914622A (US07585860-20090908-C00162.png)
DE (1) DE69943300D1 (US07585860-20090908-C00162.png)
ES (1) ES2362169T3 (US07585860-20090908-C00162.png)
FR (1) FR2784830A1 (US07585860-20090908-C00162.png)
HU (1) HU229542B1 (US07585860-20090908-C00162.png)
PL (1) PL347328A1 (US07585860-20090908-C00162.png)
RU (1) RU2292092C2 (US07585860-20090908-C00162.png)
WO (1) WO2000023993A1 (US07585860-20090908-C00162.png)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1204111A1 (en) * 1999-06-23 2002-05-08 Mitsubishi Chemical Corporation Recording medium, method for initializing recording medium, encrypting method and device for recording medium, decrypting method, and acoustic/video/data device
WO2004111912A1 (en) 2003-06-13 2004-12-23 Macrovision Europe Limited Copying copy protected optical discs
EP1587095A2 (en) 2004-04-08 2005-10-19 Ricoh Company Information recording device, method of controlling recording operation of said device, and program for controlling recording operation of said device
US7236322B2 (en) 2003-08-20 2007-06-26 International Business Machines Corporation Method, system, and program for storing data in a storage medium

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001307427A (ja) * 2000-04-26 2001-11-02 Pioneer Electronic Corp 情報配信装置、情報配信方法並びに情報記録媒体及び情報記録装置
JP2001357001A (ja) * 2000-06-12 2001-12-26 Pioneer Electronic Corp 情報出力装置及び情報出力方法、情報記録装置及び情報記録方法、情報出力記録システム並びに情報記録媒体
KR100593485B1 (ko) * 2002-11-30 2006-07-03 임경수 광기록매체의 대량 복사방법
KR100994772B1 (ko) 2004-01-10 2010-11-16 삼성전자주식회사 저장 매체의 데이터 복사 및 재생 방법
GB2419222B (en) 2004-10-15 2007-05-30 Zootech Ltd Copy deterrent for an audiovisual product
US7808867B2 (en) * 2006-02-01 2010-10-05 Wellen Sham System with read protecting function
EP1855281B1 (en) * 2006-05-10 2019-06-12 Nero Ag Apparatus for writing data to a medium
US8301906B2 (en) 2006-05-10 2012-10-30 Nero Ag Apparatus for writing information on a data content on a storage medium
WO2007128418A1 (en) * 2006-05-10 2007-11-15 Nero Ag Apparatus for writing data to a medium
CN101197987B (zh) * 2006-12-08 2010-09-29 上海全景数字技术有限公司 数字电视节目的录制、回放方法与系统
KR20080067075A (ko) * 2007-01-15 2008-07-18 주식회사 히타치엘지 데이터 스토리지 코리아 광디스크의 암호화 데이터 기록 및 재생방법

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0302710A2 (en) * 1987-08-05 1989-02-08 International Business Machines Corporation A method of controlling the use of computer programs
EP0464320A2 (de) * 1990-07-06 1992-01-08 Gigatape Systeme Fuer Datensicherung Gmbh Verfahren zum Erzeugen eines individuellen Datenträgerschutzes gegen eine unautorisierte Benutzung
JPH04360068A (ja) * 1991-06-07 1992-12-14 Mitsubishi Electric Corp データ記録再生装置
EP0553545A2 (en) * 1992-01-31 1993-08-04 Kabushiki Kaisha Sega Enterprises CD-ROM disk and security check method for the same
EP0593305A2 (en) * 1992-10-16 1994-04-20 Matsushita Electric Industrial Co., Ltd. Information carrier and recording and/or reproducing and/or initializing apparatus
US5400319A (en) * 1993-10-06 1995-03-21 Digital Audio Disc Corporation CD-ROM with machine-readable I.D. code
EP0773490A1 (en) * 1995-11-07 1997-05-14 Fujitsu Limited Security system for protecting information stored in storage media
EP0785547A2 (en) * 1996-01-16 1997-07-23 International Business Machines Corporation Unique identifier for optical media

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG71103A1 (en) * 1993-01-21 2000-03-21 Matsushita Electric Ind Co Ltd Information recording medium and method of fabricating the same
US5745568A (en) * 1995-09-15 1998-04-28 Dell Usa, L.P. Method of securing CD-ROM data for retrieval by one machine
DE69613156T2 (de) * 1995-10-09 2001-10-25 Matsushita Electric Industrial Co., Ltd. Optisches Wiedergabegerät zur Wiedergabe verschlüsselter Informationen
JPH09134330A (ja) * 1995-11-07 1997-05-20 Fujitsu Ltd セキュリティ保護システム
JPH103432A (ja) * 1996-06-19 1998-01-06 Nec Corp データ記録再生方式

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0302710A2 (en) * 1987-08-05 1989-02-08 International Business Machines Corporation A method of controlling the use of computer programs
EP0464320A2 (de) * 1990-07-06 1992-01-08 Gigatape Systeme Fuer Datensicherung Gmbh Verfahren zum Erzeugen eines individuellen Datenträgerschutzes gegen eine unautorisierte Benutzung
JPH04360068A (ja) * 1991-06-07 1992-12-14 Mitsubishi Electric Corp データ記録再生装置
EP0553545A2 (en) * 1992-01-31 1993-08-04 Kabushiki Kaisha Sega Enterprises CD-ROM disk and security check method for the same
EP0593305A2 (en) * 1992-10-16 1994-04-20 Matsushita Electric Industrial Co., Ltd. Information carrier and recording and/or reproducing and/or initializing apparatus
US5400319A (en) * 1993-10-06 1995-03-21 Digital Audio Disc Corporation CD-ROM with machine-readable I.D. code
EP0773490A1 (en) * 1995-11-07 1997-05-14 Fujitsu Limited Security system for protecting information stored in storage media
EP0785547A2 (en) * 1996-01-16 1997-07-23 International Business Machines Corporation Unique identifier for optical media

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
ANONYMOUS: "Preventing Unauthorized Access to Diskette Loaded Microcode. July 1978.", IBM TECHNICAL DISCLOSURE BULLETIN, vol. 21, no. 2, New York, US, pages 836 - 837, XP002109203 *
ANONYMOUS: "Software Serial Number", IBM TECHNICAL DISCLOSURE BULLETIN, vol. 26, no. 7B, New York, US, pages 3918 - 3919, XP002073044 *
PATENT ABSTRACTS OF JAPAN vol. 017, no. 231 (P - 1532) 11 May 1993 (1993-05-11) *

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EP1204111A1 (en) * 1999-06-23 2002-05-08 Mitsubishi Chemical Corporation Recording medium, method for initializing recording medium, encrypting method and device for recording medium, decrypting method, and acoustic/video/data device
EP1204111A4 (en) * 1999-06-23 2003-04-02 Mitsubishi Chem Corp RECORDING MEDIUM, RECORDING MEDIUM INITIALIZATION METHOD, ENCRYPTION METHOD AND DEVICE FOR RECORDING MEDIUM, DECRYPTION METHOD AND ACOUSTIC / VIDEO / DATA DEVICE
WO2004111912A1 (en) 2003-06-13 2004-12-23 Macrovision Europe Limited Copying copy protected optical discs
AU2004248325B2 (en) * 2003-06-13 2010-06-03 Rovi Europe Limited Copying copy protected optical discs
US7747924B2 (en) 2003-06-13 2010-06-29 Rovi Solutions Limited Method and apparatus for copying copy protected optical discs
US7236322B2 (en) 2003-08-20 2007-06-26 International Business Machines Corporation Method, system, and program for storing data in a storage medium
EP1587095A2 (en) 2004-04-08 2005-10-19 Ricoh Company Information recording device, method of controlling recording operation of said device, and program for controlling recording operation of said device
EP1587095A3 (en) * 2004-04-08 2010-12-15 Ricoh Company, Ltd. Information recording device, method of controlling recording operation of said device, and program for controlling recording operation of said device

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AU6093699A (en) 2000-05-08
ES2362169T3 (es) 2011-06-29
JP4812939B2 (ja) 2011-11-09
CN1324599C (zh) 2007-07-04
HUP0104066A3 (en) 2002-11-28
AU764069B2 (en) 2003-08-07
EP1123545A1 (fr) 2001-08-16
HUP0104066A2 (hu) 2002-03-28
RU2292092C2 (ru) 2007-01-20
KR20010080117A (ko) 2001-08-22
KR100756351B1 (ko) 2007-09-10
PL347328A1 (en) 2002-03-25
BR9914622A (pt) 2001-07-03
CN1323438A (zh) 2001-11-21
HU229542B1 (en) 2014-01-28
ATE503249T1 (de) 2011-04-15
JP2002528836A (ja) 2002-09-03
DE69943300D1 (de) 2011-05-05
FR2784830A1 (fr) 2000-04-21

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