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WO1996029699A1 - Dispositif de protection de supports de donnees et dispositif interactif cooperant avec le dispositif de protection pour empecher toute utilisation non autorisee - Google Patents

Dispositif de protection de supports de donnees et dispositif interactif cooperant avec le dispositif de protection pour empecher toute utilisation non autorisee Download PDF

Info

Publication number
WO1996029699A1
WO1996029699A1 PCT/EP1996/001175 EP9601175W WO9629699A1 WO 1996029699 A1 WO1996029699 A1 WO 1996029699A1 EP 9601175 W EP9601175 W EP 9601175W WO 9629699 A1 WO9629699 A1 WO 9629699A1
Authority
WO
WIPO (PCT)
Prior art keywords
data carrier
security module
interaction device
protection device
data
Prior art date
Application number
PCT/EP1996/001175
Other languages
German (de)
English (en)
Inventor
Friedwart Lender
Patrick Horster
Original Assignee
Meiller Comcard Gmbh
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
Application filed by Meiller Comcard Gmbh filed Critical Meiller Comcard Gmbh
Priority to AU51105/96A priority Critical patent/AU5110596A/en
Publication of WO1996029699A1 publication Critical patent/WO1996029699A1/fr

Links

Classifications

    • 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
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
    • G06F21/78—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data
    • G06F21/80—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data in storage media based on magnetic or optical technology, e.g. disks with sectors
    • 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
    • G11B20/00188—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
    • 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
    • G11B20/00876—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy wherein physical copy protection means are attached to the medium, e.g. holograms, sensors, or additional semiconductor circuitry
    • 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
    • G11B23/0014—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 record carriers not specifically of filamentary or web form
    • G11B23/0021—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 record carriers not specifically of filamentary or web form discs
    • G11B23/0028—Details
    • G11B23/0035—Details means incorporated in the disc, e.g. hub, to enable its guiding, loading or driving
    • G11B23/0042—Details means incorporated in the disc, e.g. hub, to enable its guiding, loading or driving with provision for auxiliary features
    • 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
    • G11B23/02—Containers; Storing means both adapted to cooperate with the recording or reproducing means
    • G11B23/03—Containers for flat record carriers
    • G11B23/0301—Details
    • G11B23/0302—Auxiliary features
    • G11B23/0305—Semiconductor memories
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2211/00—Indexing scheme relating to details of data-processing equipment not covered by groups G06F3/00 - G06F13/00
    • G06F2211/007—Encryption, En-/decode, En-/decipher, En-/decypher, Scramble, (De-)compress
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F2221/2121—Chip on media, e.g. a disk or tape with a chip embedded in its case

Definitions

  • the invention is based on the task of ensuring, with little effort, a high level of security of data carriers and interacting communication devices against unauthorized use.
  • the protective device has a security module and an interaction device interacting with the data carrier and the security module. tion on. Information is exchanged between the security module and the interaction device. Only when certain, coordinated information is sent or received by the security module and / or by the interaction device can a user access the data of the data carrier and / or the interaction device in a form that can be evaluated by the user.
  • the protection device By exchanging coordinated information, the protection device also includes decryption protection for the data stored on the data carrier.
  • decryption protection for the data stored on the data carrier.
  • the protective device according to the invention can also completely or partially prevent unauthorized use of the interaction device itself or of a computer system connected to the interaction device.
  • the interaction device blocks a user from access to the computer system or to data stored on a hard disk or to functions of the interaction device if it registers no or not the correct security module on the data carrier.
  • the above-mentioned overall system is to a certain extent a hybrid overall system which is formed by hybrid data carriers and hybrid interaction devices.
  • the hybrid data carrier is a transportable storage medium as a data carrier with magnetic, optical or other data storage capability, as is known, for example, as a floppy disk, CD-ROM, optical card and semiconductor memory.
  • the security module which supplements the data carrier to form a hybrid data carrier, is a processing and / or communicating component which, according to fixed or loadable rules or algorithms, generates a defined reaction in the security module itself and / or in the interaction device.
  • the security module is designed, for example, as a memory (with or without security logic), as a microprocessor, microcontroller, crypto processor or as a hologram.
  • the data carrier can have several, in particular also differently designed, security modules.
  • the hybrid interaction device has read / write units matched to the hybrid data carrier.
  • the hybrid data carrier interacts with the hybrid interaction device. This interaction is determined by the respective security requirements and can be adapted to the particular application by configuring the individual components.
  • the safety logic for determining the function of the hybrid overall system can either be in the hybrid data medium.
  • the hybrid data carrier and the interaction device can also interact in such a way that only a physical and / or logical linkage of the hybrid data carrier with the interaction device ensures the function of the overall system.
  • the advantage of the hybrid data carrier is that the spatial outline shape of the data carrier can remain unchanged, so that conventional chassis can be used by interaction devices and known components of these interaction devices can also be used further. Since the interaction device communicates both with the data carrier and with the security module, external communication connections are
  • the security information can therefore not be accessed without authorization.
  • the security of the data carrier against unauthorized data access is further improved.
  • the security module is uniquely assigned to a specific data carrier by the physical coupling. Unauthorized detachment of the security module from the data carrier will damage the latter through the fixed or at least difficult to detach coupling, which will be destroyed. The data carrier can therefore no longer be used without authorization.
  • the measure according to claim 3 improves the unauthorized use protection by virtue of the fact that the data carrier and the security module are only physically coupled during use or immediately before use. In this way, data carrier and security module can be sent on separate transport routes. The end customer is responsible for the physical coupling.
  • Claim 4 takes into account the physical / structural conditions of the chassis of an interaction device, so that the physical interaction of the hybrid data carrier with conventional chassis of interaction devices is further simplified.
  • the initially physical coupling of the security module to the data carrier is supplemented by a logical coupling during the initialization of the security module.
  • This logical coupling can e.g. by cryptographic processes.
  • the logical coupling can be established by means of the interaction device or by a logical coupling integrated in the data carrier.
  • the logical coupling between the security module and the data carrier can advantageously also be used to define or ensure the function of the hybrid overall system.
  • the algorithm generated by the logical coupling can be controlled by the interaction device or by the hybrid data carrier itself before data access.
  • the logical coupling between data carrier and security module enables a clear, unmistakable and secure identification of the data carrier.
  • the logical coupling can be reversible or irreversible. You will either immediately during the manufacture of the hybrid data carrier or at a later point in time.
  • the subsequent introduction of the logical coupling has the advantage that the information content of the data carrier cannot be reconstructed without an initialization (for example, by key assignment) of the security module.
  • the software made available in contract manufacturing is encrypted on a CD and pressed as a data carrier, while the software manufacturer itself only activates the hybrid data carrier - for example, by key allocation - at a later point in time. This is the only way to make the initially anonymous data carrier uniquely identifiable, and only then can the data be used, ie interpreted by a user.
  • Claim 7 supports the protection of a data carrier against unauthorized use or interpretation of data.
  • the security module ensures, for example, an irreversible and thus secure key hold in the hybrid data carrier.
  • Claim 8 guarantees rapid data access when the data carrier is used in an authorized manner.
  • the operations of the read / write units for the hybrid data carrier can be carried out independently of one another.
  • the aforementioned read / write units are logically coupled to one another, which means an additional security measure against unauthorized use of the data carrier.
  • the one read / write unit remains in a protected mode if the other unit communicates with none or not with the correct security module.
  • the logical coupling of the read / write units is either fixed (closed system) or can be introduced from the outside - reversible or irreversible (open system).
  • the interaction device is designed as an additional security module.
  • corresponding control signals are generated which irreversibly destroy a logical coupling between the read / write units.
  • the interaction device is compact and space-saving, whereby the assembly of the entire protective device is simplified.
  • FIG. 3 shows the functional combination of the hybrid data carrier according to FIG. 1 with the hybrid interaction device according to FIG. 2,
  • FIG. 4 shows the top view of a conventional data carrier designed as a diskette with an integrated, contact-based security module.
  • FIG. 5 shows the top view of a data carrier designed as a CD-ROM with an integrated, contactless security module.
  • the protective device contains as essential components a hybrid data carrier 4 (FIG. 1) and a hybrid interaction device 5 (FIG. 2).
  • the hybrid data carrier 4 essentially consists of a transportable and conventional mass storage device as a data carrier 1 and a security module 2.
  • the data carrier 1 and the security module 2 are connected to one another by a physical coupling 3.
  • the data carrier 1 communicates with the interaction device 5 (FIG. 3) connected to a computer via an interface 6.
  • the security module 2 and the interaction device 5 interact as components of the protective device in such a way that the data on the data carrier 1 and / or the interaction device only depend on an exchange of coordinated information between the security module 2 and the interaction device 5 5 is accessible in a form that can be evaluated by a user.
  • All conventional mass storage devices can be used as data carrier 1, e.g. a floppy disk with integrated, contact-based security module 2 (Fig.4) or a CD-ROM with integrated, contactless security module (Fig.5).
  • the physical coupling 3 is solid, difficult to solve or loose.
  • the security module 2 is embedded in the data carrier 1 or in its housing, implanted or placed on the data carrier 1.
  • the security module 2 can also be part of the data carrier 1 itself.
  • the physical coupling 3 is supplemented by a logical coupling between the data carrier 1 and the security module 2.
  • the security module 2 contains an integrated semiconductor circuit or consists of such a semiconductor circuit.
  • the security module 2 contains a crypto processor or consists of a crypto processor.
  • the data are then stored in encrypted form on the data carrier 1 and can only be used in cooperation with the hybrid interaction device 5 provided for this purpose, ie decrypted in a form that can be evaluated by the user.
  • the encrypted data can generally be read out using a conventional reader for the respective data carrier type, no unauthorized user can do anything with the content of the data, since the use of encryption prevents the use of data.
  • the interaction device 5 has a read / write unit for the data carrier 1 and for the security module 2 (FIG. 3).
  • the read / write units of the interaction device can be logically coupled to one another in such a way that the logical coupling determines the operations of the read / write units.
  • the interaction device 5 can also be designed in such a way that the logical coupling between the read / write units is irreversibly destroyed in the event of unauthorized software or hardware manipulation. In this case, the interaction device 5 acts as a security system.
  • the interaction device 5 is designed as a single physical unit.
  • the interaction device 5 serves - as already mentioned - with the data carrier 1, the security module 2 and with the environment - e.g. a computer - to communicate via the interfaces 6,7,8. This communication can be open or protected by the security module 2.
  • the properties of the interaction device 5 can be freely defined, e.g. for security applications.
  • the interaction device 5 can be designed as an open or closed system or as a security system.
  • Communication via the interface 8 between the data carrier 1 and the interaction device 5 takes place in a data carrier-specific manner (optical, electromagnetic, galvanic, etc.).
  • Communication via the interface 7 between the security module 2 and its interaction device 5 takes place in a module-specific manner (optical, electromagnetic, galvanic, etc.).
  • the information represented by the data can only be accessed in cooperation with the interaction device 5. This can be implemented, for example, by encryption, PIN protection and / or secure key storage in the security module 2.
  • the information content of the data carrier 1 cannot be reconstructed without initializing the security module 2.
  • the software made available in contract manufacturing is encrypted on CD (CD corresponds to data carrier 1), the activation takes place at a later time by the software manufacturer itself. This makes the initially anonymous data carrier 1 uniquely identifiable and the information is only thereby harnessed.
  • the typical case of a combined application is the mutual authentication of hybrid data carrier 4 with an interaction device 5 in that authentication protocols are carried out on the data carrier 1 between the interaction device 5, which is designed as a security device, and the security module 2.
  • the security module 2 and the interaction device 5 can be designed in such a way that they are able to keep keys confidential and to process data further.
  • the security module 2 is e.g. trained as a microcontroller or cryptocontroller, while on the side of the interaction device 5 a microcontroller, crypto or signal processor or the like is used. Because there are no restrictions on space and performance on the interaction side, there are no limits to the design.
  • the confidential information and algorithms can be loaded via the interface 6 or are already stored unchanged in the hybrid data carrier 4 or in the security module 2.
  • the interaction device 5 can also be intended for cooperation only with data carriers 4 specially configured for this purpose.
  • the interaction device 5 can link data, channel it and operate it as a switch. As a result, the interaction device 5 determines the scope of the transformation, evaluation, writing and reading of the data of the data carrier 1.

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Software Systems (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Storage Device Security (AREA)

Abstract

La présente invention concerne un dispositif de protection de supports portables de mémorisation comme des supports de données (1), conçu pour empêcher l'utilisation non autorisée de données et/ou pour protéger un dispositif interactif (5) communiquant avec le support de données. Le support de données (1) est physiquement couplé (3) avec au moins un module de sécurité (2). Ce module de sécurité (2) et le dispositif interactif (5), qui font partie intégrante du dispositif de protection, coopèrent de telle sorte que l'accès de l'utilisateur au support de données (1) (1) et/ou au dispositif interactif sous une forme exploitable n'est possible que sur la base d'un échange d'informations mutuellement coordonnées entre le module de sécurité (2) et le dispositif interactif (5).
PCT/EP1996/001175 1995-03-22 1996-03-19 Dispositif de protection de supports de donnees et dispositif interactif cooperant avec le dispositif de protection pour empecher toute utilisation non autorisee WO1996029699A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU51105/96A AU5110596A (en) 1995-03-22 1996-03-19 Protection device for data carriers and an interactive device which co-operates with the protection device to prevent unauthorised use

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19512218 1995-03-22
DE19512218.6 1995-03-22

Publications (1)

Publication Number Publication Date
WO1996029699A1 true WO1996029699A1 (fr) 1996-09-26

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Family Applications (1)

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PCT/EP1996/001175 WO1996029699A1 (fr) 1995-03-22 1996-03-19 Dispositif de protection de supports de donnees et dispositif interactif cooperant avec le dispositif de protection pour empecher toute utilisation non autorisee

Country Status (2)

Country Link
AU (1) AU5110596A (fr)
WO (1) WO1996029699A1 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998004966A1 (fr) * 1996-07-26 1998-02-05 Thomson-Csf Systeme de stockage securise de donnees sur cd-rom
WO1998052191A1 (fr) * 1997-05-15 1998-11-19 Gal Ezer Ron Disque compact comportant un circuit electronique auxiliaire
WO1998058372A1 (fr) * 1997-06-19 1998-12-23 Kabushiki Kaisha Optrom Support d'information pourvu d'un circuit electronique et son procede de fabrication
EP0932147A2 (fr) * 1998-01-26 1999-07-28 Eastman Kodak Company Marques d'indication sur un disque optique indiquant que le disque à été préalablement accédé
WO1999038162A1 (fr) * 1998-01-22 1999-07-29 Nds Ltd. Protection de donnees sur des disques d'enregistrement multimedia
WO2000048059A1 (fr) * 1999-02-11 2000-08-17 A-Tronic Mgm Ag Systeme d'identification
FR2794276A1 (fr) * 1999-05-03 2000-12-01 Silver Reader Inc Structure de support d'enregistrement optique ayant une puce de memoire
US6295564B1 (en) 1997-06-18 2001-09-25 Kabushiki Kaisha Optrom Storage medium having electronic circuit and computer system having the storage medium
US6393400B1 (en) 1997-06-18 2002-05-21 Kabushiki Kaisha Optrom Intelligent optical disk with speech synthesizing capabilities
US6510125B1 (en) 1997-06-19 2003-01-21 Kabushiki Kaisha Optrom Storage medium having electronic circuit, apparatus communicating information with the electronic circuit, and system including them
US6938121B2 (en) 1997-06-18 2005-08-30 Kabushiki Kaisha Optrom Disk storage system having an electronic circuit mounted on the surface of the disk and control method thereof
WO2006021382A1 (fr) * 2004-08-20 2006-03-02 Giesecke & Devrient Gmbh Protection de donnees d'un support de donnees presentant une memoire de masse et une puce contre une utilisation frauduleuse

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WO1989012890A1 (fr) * 1988-06-20 1989-12-28 Dupre Michel Jean Procede et appareil d'enregistrement numerique de donnees, support protege d'enregistrement de donnees et appareil de lecture de donnees enregistrees sur un tel support
US4910625A (en) * 1988-10-11 1990-03-20 Eastman Kodak Company Article surveillance apparatus and systems for computer data disks
WO1990006579A2 (fr) * 1988-11-30 1990-06-14 Goulven Jean Alain Vernois Disquette perfectionnee
FR2643475A1 (fr) * 1989-02-21 1990-08-24 Livowsky Jean Michel Procede de controle de l'utilisation d'un support d'informations, notamment magnetique ou magneto-optique et systemes pour sa mise en oeuvre
EP0565281A2 (fr) * 1992-04-06 1993-10-13 Nhk Spring Co.Ltd. Système de traitement d'information comprenant une mesure de protection de données
EP0600660A2 (fr) * 1992-11-26 1994-06-08 Nintendo Co., Ltd. Système de traitement de données qui contrôle un rapport de stockage secondaire auquel il a un support ordonné, et un tel dispositif de stockage secondaire

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989012890A1 (fr) * 1988-06-20 1989-12-28 Dupre Michel Jean Procede et appareil d'enregistrement numerique de donnees, support protege d'enregistrement de donnees et appareil de lecture de donnees enregistrees sur un tel support
US4910625A (en) * 1988-10-11 1990-03-20 Eastman Kodak Company Article surveillance apparatus and systems for computer data disks
WO1990006579A2 (fr) * 1988-11-30 1990-06-14 Goulven Jean Alain Vernois Disquette perfectionnee
FR2643475A1 (fr) * 1989-02-21 1990-08-24 Livowsky Jean Michel Procede de controle de l'utilisation d'un support d'informations, notamment magnetique ou magneto-optique et systemes pour sa mise en oeuvre
EP0565281A2 (fr) * 1992-04-06 1993-10-13 Nhk Spring Co.Ltd. Système de traitement d'information comprenant une mesure de protection de données
EP0600660A2 (fr) * 1992-11-26 1994-06-08 Nintendo Co., Ltd. Système de traitement de données qui contrôle un rapport de stockage secondaire auquel il a un support ordonné, et un tel dispositif de stockage secondaire

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998004966A1 (fr) * 1996-07-26 1998-02-05 Thomson-Csf Systeme de stockage securise de donnees sur cd-rom
WO1998052191A1 (fr) * 1997-05-15 1998-11-19 Gal Ezer Ron Disque compact comportant un circuit electronique auxiliaire
US6295564B1 (en) 1997-06-18 2001-09-25 Kabushiki Kaisha Optrom Storage medium having electronic circuit and computer system having the storage medium
US6938121B2 (en) 1997-06-18 2005-08-30 Kabushiki Kaisha Optrom Disk storage system having an electronic circuit mounted on the surface of the disk and control method thereof
US6496883B2 (en) 1997-06-18 2002-12-17 Kabushiki Kaisha Optrom Storage medium having electronic circuit and computer system having the storage medium
US6393400B1 (en) 1997-06-18 2002-05-21 Kabushiki Kaisha Optrom Intelligent optical disk with speech synthesizing capabilities
WO1998058372A1 (fr) * 1997-06-19 1998-12-23 Kabushiki Kaisha Optrom Support d'information pourvu d'un circuit electronique et son procede de fabrication
US6510125B1 (en) 1997-06-19 2003-01-21 Kabushiki Kaisha Optrom Storage medium having electronic circuit, apparatus communicating information with the electronic circuit, and system including them
GB2338586B (en) * 1998-01-22 2002-03-20 Nds Ltd Protection of data on media recording disks
GB2338586A (en) * 1998-01-22 1999-12-22 Nds Ltd Protection of data on media recording disks
WO1999038162A1 (fr) * 1998-01-22 1999-07-29 Nds Ltd. Protection de donnees sur des disques d'enregistrement multimedia
US7031470B1 (en) 1998-01-22 2006-04-18 Nds Limited Protection of data on media recording disks
US7386127B2 (en) 1998-01-22 2008-06-10 Nds Limited Protection of data on media recording disks
US7760877B2 (en) 1998-01-22 2010-07-20 Nds Limited Protection of data on media recording disks
US7813504B2 (en) 1998-01-22 2010-10-12 Nds Limited Protection of data on media recording disks
EP0932147A3 (fr) * 1998-01-26 2001-01-31 Eastman Kodak Company Marques d'indication sur un disque optique indiquant que le disque à été préalablement accédé
EP0932147A2 (fr) * 1998-01-26 1999-07-28 Eastman Kodak Company Marques d'indication sur un disque optique indiquant que le disque à été préalablement accédé
WO2000048059A1 (fr) * 1999-02-11 2000-08-17 A-Tronic Mgm Ag Systeme d'identification
FR2794276A1 (fr) * 1999-05-03 2000-12-01 Silver Reader Inc Structure de support d'enregistrement optique ayant une puce de memoire
WO2006021382A1 (fr) * 2004-08-20 2006-03-02 Giesecke & Devrient Gmbh Protection de donnees d'un support de donnees presentant une memoire de masse et une puce contre une utilisation frauduleuse

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Publication number Publication date
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