WO2002082429A8 - Systems and methods for optical media modification - Google Patents

Systems and methods for optical media modification

Info

Publication number
WO2002082429A8
WO2002082429A8 PCT/US2001/051442 US0151442W WO02082429A8 WO 2002082429 A8 WO2002082429 A8 WO 2002082429A8 US 0151442 W US0151442 W US 0151442W WO 02082429 A8 WO02082429 A8 WO 02082429A8
Authority
WO
WIPO (PCT)
Prior art keywords
media
copying
optical media
data
attributes
Prior art date
Application number
PCT/US2001/051442
Other languages
French (fr)
Other versions
WO2002082429A2 (en
WO2002082429A3 (en
Inventor
John J Hart Iii
Richard B Levine
Andrew R Lee
Daniel G Howard
Original Assignee
Ecd Systems Inc
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 Ecd Systems Inc filed Critical Ecd Systems Inc
Priority to AU2001297777A priority Critical patent/AU2001297777C1/en
Priority to CA002434538A priority patent/CA2434538A1/en
Priority to DE60135377T priority patent/DE60135377D1/en
Priority to DK01273757T priority patent/DK1344212T3/en
Priority to EP01273757A priority patent/EP1344212B1/en
Publication of WO2002082429A2 publication Critical patent/WO2002082429A2/en
Publication of WO2002082429A3 publication Critical patent/WO2002082429A3/en
Publication of WO2002082429A8 publication Critical patent/WO2002082429A8/en

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00572Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium
    • G11B20/00586Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium said format change concerning the physical format of the recording medium
    • G11B20/00608Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium said format change concerning the physical format of the recording medium wherein the material that the record carrier is made of is altered, e.g. adding reactive dyes that alter the optical properties of a disc after prolonged exposure to light or air
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00094Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers
    • G11B20/00123Circuits 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
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00166Circuits 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
    • G11B20/00173Circuits 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
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00572Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium
    • G11B20/00586Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium said format change concerning the physical format of the recording medium
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00659Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a control step which is implemented as an executable file stored on the record carrier
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/0092Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which are linked to media defects or read/write errors
    • G11B20/00927Circuits 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
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00Record carriers by type
    • G11B2220/20Disc-shaped record carriers
    • G11B2220/25Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537Optical discs
    • G11B2220/2562DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00Record 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
    • G11B23/28Indicating or preventing prior or unauthorised use, e.g. cassettes with sealing or locking means, write-protect devices for discs
    • G11B23/281Indicating or preventing prior or unauthorised use, e.g. cassettes with sealing or locking means, write-protect devices for discs by changing the physical properties of the record carrier
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/21Circular sheet or circular blank

Abstract

The present invention involves the modification of optical media (63,69,72) such that selected portions (57-62,64-68) of the media are physically altered, in order to distort and/or attenuate the transmission of such optical signal to a predetermined degree. This slows the copying process to a desired extent by creating media that generates measurable changes in the system's timing and performance related to how and when data is read in standard optical media rives copying devices, in a fashion that makes the process of copying the media more time consuming and difficult, as a deterrent to any such copying. The present invention can create instances of optical media that have uniquely identifiable attributes, whose properties are not encoded as data. These properties form a media signature that may be calculated as a metric of optical media drive and/or system and subsystem performance. The principal benefit of these identifying attributes is that since they are induced by physical means, a purely data-driven bit-for-bit copy of a disc cannot represent all of the necessary attributes inherent in the original disc.
PCT/US2001/051442 2000-12-14 2001-12-12 Systems and methods for optical media modification WO2002082429A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AU2001297777A AU2001297777C1 (en) 2000-12-14 2001-12-12 Systems and methods for optical media modification
CA002434538A CA2434538A1 (en) 2000-12-14 2001-12-12 Systems and methods for optical media modification
DE60135377T DE60135377D1 (en) 2000-12-14 2001-12-12 A method of authenticating an optical recording medium and an optical recording medium
DK01273757T DK1344212T3 (en) 2000-12-14 2001-12-12 Method for determining the authenticity of an optical recording medium and optical recording medium
EP01273757A EP1344212B1 (en) 2000-12-14 2001-12-12 Method for determining authenticity of an optical recording medium and optical recording medium

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US25565300P 2000-12-14 2000-12-14
US60/255,653 2000-12-14

Publications (3)

Publication Number Publication Date
WO2002082429A2 WO2002082429A2 (en) 2002-10-17
WO2002082429A3 WO2002082429A3 (en) 2003-03-06
WO2002082429A8 true WO2002082429A8 (en) 2004-02-12

Family

ID=22969301

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/051442 WO2002082429A2 (en) 2000-12-14 2001-12-12 Systems and methods for optical media modification

Country Status (8)

Country Link
US (2) US7376073B2 (en)
EP (2) EP1344212B1 (en)
AT (1) ATE404970T1 (en)
AU (1) AU2001297777C1 (en)
CA (1) CA2434538A1 (en)
DE (1) DE60135377D1 (en)
DK (1) DK1344212T3 (en)
WO (1) WO2002082429A2 (en)

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