WO2001035403A1 - Support d'enregistrement optique enregistrable et procede de fabrication de matrice pour un tel support d'enregistrement enregistrable - Google Patents

Support d'enregistrement optique enregistrable et procede de fabrication de matrice pour un tel support d'enregistrement enregistrable Download PDF

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Publication number
WO2001035403A1
WO2001035403A1 PCT/NL2000/000710 NL0000710W WO0135403A1 WO 2001035403 A1 WO2001035403 A1 WO 2001035403A1 NL 0000710 W NL0000710 W NL 0000710W WO 0135403 A1 WO0135403 A1 WO 0135403A1
Authority
WO
WIPO (PCT)
Prior art keywords
track
verification
registration carrier
writable
programme
Prior art date
Application number
PCT/NL2000/000710
Other languages
English (en)
Inventor
Arnoldus Johannes Maria Van Der Stappen
Original Assignee
Otb Group B.V.
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 Otb Group B.V. filed Critical Otb Group B.V.
Priority to AU10623/01A priority Critical patent/AU1062301A/en
Publication of WO2001035403A1 publication Critical patent/WO2001035403A1/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
    • G11B20/0092—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which are linked to media defects or read/write errors
    • G11B20/00927—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which are linked to media defects or read/write errors wherein said defects or errors are generated on purpose, e.g. intended scratches
    • 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
    • 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
    • G11B23/30—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 with provision for auxiliary signals
    • G11B23/34—Signal means additional to the main recording track, e.g. photoelectric sensing of sprocket holes for timing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers

Definitions

  • the invention relates to a writable optical registration carrier including at least one writable track, onto which a programme can be written, which programme comprises information stored in the form of variation in a physical parameter.
  • the invention furthermore relates to a method for manufacturing a master mould for such a writable optical registration carrier.
  • the master mould provides the CD-ROM to be subsequently produced by means of said master mould with verification effects stored in verification positions thereon
  • the programme stored on the CD-ROM and/or the playback equipment for the CD- ROM and/or separately suppl led software include means for verifying whether the expected verification effects are indeed present at the previously known verification positions. In this way it is possible to distinguish original CD-ROM's from copied CD-ROM's. On the copied CD-ROM's, which have for example been produced by means of another master mould, no verification effects will be present at the positions corresponding to the verification positions. Also in those cases where the original CD-ROM thus produced is copied directly onto a writable optical registration carrier, such as a CD-R (recordable), said verification effects will not be present on the copied CD-R.
  • a writable optical registration carrier such as a CD-R (recordable
  • a method of this kind is quite suitable for producing CD-ROM's by means of a master mould.
  • W0 99/17288 When the method disclosed in W0 99/17288 is used, it is still possible to copy optical registration carriers, but it will be relatively easy to recognize whether an optical registration carrier is an original or a copy
  • At present writable optical registration carriers, such as CD-R's are also used for producing relatively small series of registration carriers.
  • a producer produces CD-R's and subsequently distributes them, it is relatively easy for a user of such a CD-R to make further copies which are impossible to distinguish from the original CD-R's.
  • the object of the invention is to provide a writable optical registration carrier that can be distinguished from copies and/or that cannot be copied. This objective is accomplished with the writable optical registration carrier according to the invention in that the track includes verification effects that have been provided thereon at verification positions.
  • the producer of a CD-ROM for example, records a desired programme onto a number of identical writable optical registration carriers (for example CD-R's).
  • the verification positions associated with the specific series of CD-R's and the verification effects that are present at the verification positions are stored in this programme or in a separately supplied programme. It is possible to recognize the CD-ROM as an original specimen on the basis of the verification effects that are present at the verification positions. In addition it is possible to arrange for the programme to function only if the expected verification effects are indeed present at the verification positions.
  • the verification effect is preferably such that the desired programme can be recorded onto the track by means of the available writing equipment, whilst the verification effects will either be considered as illegible or as detectable by the available reading equipment.
  • a deviant for example illegible, signal will be detected at the verification positions by the reading equipment.
  • the information from the written optical registration carrier according to the invention is subsequently written onto the known optical registration carrier, it will not be possible to record any information at the verification positions, therefore If random information is recorded at the verification positions after all, it will be possible to read this information again by means of the reading apparatus to be subsequently used, unlike the verification effects of the original optical registration carrier.
  • the verification effects must preferably be arranged in a way that makes it impossible to produce a copy of an optical registration carrier that includes verification effects identical to those that are present on said optical registration carrier by means of the standard reading and writing apparatus that is available on the market.
  • CD-R CD-recordable
  • CD-RW CD- rewritable
  • DVD-R DVD-recordable
  • DVD-RW DVD-rewritable
  • other DVD formats such as DVD+RW, DVD-RAM.
  • Another advantage of the writable optical registration carrier according to the invention is that a producer himself can record the desired software onto a selected number of registration carriers. The producer does not need to turn to a manufacturer of master moulds for that purpose.
  • EP-A2-0 936 610 discloses a registration carrier wherein verification effects can be recorded onto the registration carrier together with the programme.
  • a registration carrier of that kind is not capable of being written on, however.
  • W099/11064 discloses an optical registration carrier which is likewise provided with verification effects, which have been recorded thereon simultaneously with the programme.
  • the optical registration carrier according to the invention is a writable registration carrier, onto which verification effects are provided at verification positions in advance and a desired programme is only recorded thereon at a later stage by the user.
  • One embodiment of a writable optical registration carrier according to the invention is characterized in that the writable track includes a track following arrangement, which is suitable for addressing positions along the track, whilst the writable track is provided, at least near one of said verification positions, with a second variation of a physical parameter, which constitutes at least one of said verification effects.
  • a track following arrangement formed in the track for example a wavelike pattern, is suitable for addressing the position along the track.
  • the second physical parameter can be an interruption in said wavelike pattern or a modulation that has been generated in said track.
  • Figure 1 is a schematic view of a device suitable for carrying out a method according to the invention
  • Figure 2 is a schematic representation of a part of a writable optical registration carrier according to the invention.
  • optical registration carrier in the form of a CD-R (CD-recordable). It will be apparent that the optical registration carrier may also be another writable and rewritable optical registration carrier that is known per se.
  • Figure 1 shows a device 1 that is suitable for carrying out the method according to the invention.
  • Device 1 includes a module 2 for generating a desired, known CD-R wavelike pattern 3 in a track.
  • Device 1 furthermore includes a second module 4 for generating a modulation signal 5 for providing verification effects at desired verification positions in the track.
  • Module 4 is controlled by module 2 for providing the modulation 5 generated by module 4 at the desired, predetermined verification positions that have been generated or transmitted by module 2.
  • the signals from modules 2 and 4 are fed to a laser beam recorder 9 via lines 7, 8. Then a desired spiral-shaped track is formed in a master mould by means of laser beam recorder 9.
  • FIG. 2 shows the track 10 that is present in the master mould and, subsequently, in the CD-R.
  • Track 10 comprises the wave pattern 3 generated by module 3.
  • track 10 comprises at predetermined verification positions 11 a modulated track portion 12 that includes interruptions 13 resulting from the modulated signal 5.
  • a producer who wishes to record a programme onto a CD-R according to the invention in order to produce a CD-ROM writes the programme data onto track 10 by means of known writing apparatus.
  • the producer has the information with regard to the verification positions and the verification effects of the specific CD-R that are present thereon. Consequently, no relevant data will be recorded at the verification positions.
  • the writing apparatus that is currently available is relatively robust, so that the interruptions 13 in track portion 12 will not interfere with the writing apparatus following track 10. Also the verification positions and the verification effects present thereon are stored in the programme to be recorded onto the registration carrier.
  • the programme present thereon will control the reading apparatus to verify whether the verification effects are indeed present at the verification positions. If this is the case, further activation of the programme can take place.
  • the interruptions 13 present in track portion 12 will be detected by the reading apparatus upon reading the required information that is present on track portion 12 of the CD-ROM.
  • the effect of the interruptions 13 and the information in track portion 12 is preferably such that the data being read will be considered illegible and non-corrigible.
  • the conventional writing apparatus is only capable of writing readable information, whether relevant or not. It is not possible, therefore, to write information that is illegible, like the information that is present on track portion 12.
  • a modulation pattern 5 comprising pulses having a 50% duty cycle and a period of 2 ⁇ seconds was used.
  • the effective length upon play-back of the entire track portion 12 was about 1.6 m seconds (800 period) to about 3.2 seconds (1600 period).
  • the signal was written onto track 10 with 13-111 pulses by means of a standard writing apparatus.
  • the correction module that is present in the standard reading apparatus attempted to correct the information present in track portion 12 at C1-C2 level, which are correction methods for CD audio as well as for CD-ROM correction errors.
  • the verification effects to be recorded onto the track portions 12 and the lengths of said track portions 12 must be determined individually for each type of writable optical registration carrier
  • the length of the track portion 12 that includes track modulation with pulses was 1 6- 3.2 m seconds This length is greater than the length that is currently considered to be corrigible and thus allowable for a properly functioning CD
  • the differences between a conventional CD-R and a CD-R according to the invention are also optically discernable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

La présente invention concerne un support d'enregistrement optique enregistrable comportant au moins une piste enregistrable (3) sur laquelle on peut enregistrer un programme. Ce programme comprend de l'information stockée sous forme de variation d'un paramètre physique. En l'occurrence, la piste comporte des effets de vérification (13) qui y ont été apportés en des positions de vérification (12). Ces effets de vérification produisent des erreurs de lecture, qui sont de préférence non corrigibles.
PCT/NL2000/000710 1999-11-11 2000-10-03 Support d'enregistrement optique enregistrable et procede de fabrication de matrice pour un tel support d'enregistrement enregistrable WO2001035403A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU10623/01A AU1062301A (en) 1999-11-11 2000-10-03 Writable optical registration carrier and method for manufacturing a master mould for such a writable registration carrier

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1013562A NL1013562C2 (nl) 1999-11-11 1999-11-11 Beschrijfbare optische registratiedrager alsmede werkwijze voor het vervaardigen van een moedermatrijs voor een dergelijke beschrijfbare optische registratiedrager.
NL1013562 1999-11-11

Publications (1)

Publication Number Publication Date
WO2001035403A1 true WO2001035403A1 (fr) 2001-05-17

Family

ID=19770244

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL2000/000710 WO2001035403A1 (fr) 1999-11-11 2000-10-03 Support d'enregistrement optique enregistrable et procede de fabrication de matrice pour un tel support d'enregistrement enregistrable

Country Status (3)

Country Link
AU (1) AU1062301A (fr)
NL (1) NL1013562C2 (fr)
WO (1) WO2001035403A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005055227A1 (fr) * 2003-12-03 2005-06-16 Koninklijke Philips Electronics N.V. Canal lateral pour supports d'enregistrement a pistes en spirale

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0129427A2 (fr) * 1983-06-15 1984-12-27 Defendisk Ltd. Protection de disques souples
NL8703032A (nl) * 1987-12-15 1989-07-03 Christian Alexander Oudshoorn Werkwijze voor het tegen ongeautoriseerd kopieren beveiligen van op een voor een verwerkingsinrichting toegankelijke wijze op een informatiedrager opgeslagen informatie; en inrichting voor het vervaardigen van dergelijke beveiligde informatiedragers, respectievelijk beveiligde drager verkregen met behulp van de werkwijze of de inrichting volgens de uitvinding.
EP0545472A1 (fr) * 1991-12-02 1993-06-09 Koninklijke Philips Electronics N.V. Système d'information fermé avec protection de copie
EP0644474A1 (fr) * 1993-09-13 1995-03-22 National University Of Singapore Méthode pour réduire au minimum la duplication non-autorisée de données digitales en utilisant des non-uniformités d'un support de mémoire
EP0723216A2 (fr) * 1994-11-18 1996-07-24 Sony Corporation Procédé et dispositif de reproduction de disques compacts et système de sécurité de lecteur de tels disques
EP0788097A2 (fr) * 1992-06-29 1997-08-06 Sony Corporation Fabrication de matrice pour disques compacts et minidisques
WO1999011064A2 (fr) * 1997-08-26 1999-03-04 Koninklijke Philips Electronics N.V. Systeme de transfert d'informations de contenu et d'informations annexes relatives a celles-ci
WO1999017288A1 (fr) * 1997-09-26 1999-04-08 Odme International B.V. Procede de production d'un support d'alignement optique au moyen d'une forme primitive, dispositif permettant la mise en oeuvre dudit procede, support d'alignement optique et procede de verification dudit support
EP0936610A2 (fr) * 1998-02-13 1999-08-18 Sony Corporation Appareil d'enregistrement, support d'enregistrement, appareil de reproduction, procédé d'enregistrement et procédé de reproduction

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0129427A2 (fr) * 1983-06-15 1984-12-27 Defendisk Ltd. Protection de disques souples
NL8703032A (nl) * 1987-12-15 1989-07-03 Christian Alexander Oudshoorn Werkwijze voor het tegen ongeautoriseerd kopieren beveiligen van op een voor een verwerkingsinrichting toegankelijke wijze op een informatiedrager opgeslagen informatie; en inrichting voor het vervaardigen van dergelijke beveiligde informatiedragers, respectievelijk beveiligde drager verkregen met behulp van de werkwijze of de inrichting volgens de uitvinding.
EP0545472A1 (fr) * 1991-12-02 1993-06-09 Koninklijke Philips Electronics N.V. Système d'information fermé avec protection de copie
EP0788097A2 (fr) * 1992-06-29 1997-08-06 Sony Corporation Fabrication de matrice pour disques compacts et minidisques
EP0644474A1 (fr) * 1993-09-13 1995-03-22 National University Of Singapore Méthode pour réduire au minimum la duplication non-autorisée de données digitales en utilisant des non-uniformités d'un support de mémoire
EP0723216A2 (fr) * 1994-11-18 1996-07-24 Sony Corporation Procédé et dispositif de reproduction de disques compacts et système de sécurité de lecteur de tels disques
WO1999011064A2 (fr) * 1997-08-26 1999-03-04 Koninklijke Philips Electronics N.V. Systeme de transfert d'informations de contenu et d'informations annexes relatives a celles-ci
WO1999017288A1 (fr) * 1997-09-26 1999-04-08 Odme International B.V. Procede de production d'un support d'alignement optique au moyen d'une forme primitive, dispositif permettant la mise en oeuvre dudit procede, support d'alignement optique et procede de verification dudit support
EP0936610A2 (fr) * 1998-02-13 1999-08-18 Sony Corporation Appareil d'enregistrement, support d'enregistrement, appareil de reproduction, procédé d'enregistrement et procédé de reproduction

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005055227A1 (fr) * 2003-12-03 2005-06-16 Koninklijke Philips Electronics N.V. Canal lateral pour supports d'enregistrement a pistes en spirale

Also Published As

Publication number Publication date
NL1013562C2 (nl) 2001-05-14
AU1062301A (en) 2001-06-06

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