BR0205394A - Portador de gravação para armazenar um trabalho digital, método para gravar um trabalho digital em um portador de gravação, e, dispositivos para gravar, um trabalho digital em um portador de gravação, e para ler o portador de gravação - Google Patents

Portador de gravação para armazenar um trabalho digital, método para gravar um trabalho digital em um portador de gravação, e, dispositivos para gravar, um trabalho digital em um portador de gravação, e para ler o portador de gravação

Info

Publication number
BR0205394A
BR0205394A BR0205394-2A BR0205394A BR0205394A BR 0205394 A BR0205394 A BR 0205394A BR 0205394 A BR0205394 A BR 0205394A BR 0205394 A BR0205394 A BR 0205394A
Authority
BR
Brazil
Prior art keywords
recording
carrier
recording carrier
klt
digital job
Prior art date
Application number
BR0205394-2A
Other languages
English (en)
Original Assignee
Koninkl Philips Electronics Nv
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 Koninkl Philips Electronics Nv filed Critical Koninkl Philips Electronics Nv
Publication of BR0205394A publication Critical patent/BR0205394A/pt

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
    • G11B20/10—Digital recording or reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/0021—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
    • G11B20/00369—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 a first key, which is usually stored on a hidden channel, e.g. in the lead-in of a BD-R, unlocks a key locker containing a second
    • 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
    • G11B20/00731—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction
    • G11B20/00746—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number
    • G11B20/00789—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number wherein the usage restriction limits the number of functional copies, which can be accessed at a time, e.g. electronic bookshelf concept, virtual library, video rentals or check-in/check out
    • 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
    • G11B20/00731—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction
    • G11B20/00746—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number
    • G11B20/00797—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number wherein the usage restriction limits the number of times a content can be reproduced, e.g. using playback counters
    • 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
    • G11B20/00731—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction
    • G11B20/0084—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific time or date

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Library & Information Science (AREA)
  • Multimedia (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Storage Device Security (AREA)

Abstract

"PORTADOR DE GRAVAçãO PARA ARMAZENAR UM TRABALHO DIGITAL, MéTODO PARA GRAVAR UM TRABALHO DIGITAL EM UM PORTADOR DE GRAVAçãO, E, DISPOSITIVOS PARA GRAVAR UM TRABALHO DIGITAL EM UM PORTADOR DE GRAVAçãO, E PARA LER O PORTADOR DE GRAVAçãO". A presente invenção relaciona-se a um portador de gravação para armazenar um trabalho digital (DW). O portador de gravação (10) inclui informação de acesso (KLT) para ganhar acesso ao trabalho digital e um canal secundário (HC), no qual informação de canal secundário (KLK) é armazenada que é usada para criptografar, descriptografar ou verificar a informação de acesso (KLT). Para prevenir, impedir ou desencorajar fraude com a informação de acesso (KLT), o canal secundário (HC) é armazenado, no portador de gravação substancialmente no mesmo local físico como a informação de acesso (KLT). Em uma concretização preferida, a informação de canal secundário KLK) é mudada quando a informação de acesso (KLT) mudou. Isto realiza um portador de gravação para o qual um ataque de reprodução é prevenido. A invenção ademais relaciona-se a um método para gravar um trabalho digital em um portador de gravação, um dispositivo para gravar e um dispositivo para ler.
BR0205394-2A 2001-05-22 2002-05-17 Portador de gravação para armazenar um trabalho digital, método para gravar um trabalho digital em um portador de gravação, e, dispositivos para gravar, um trabalho digital em um portador de gravação, e para ler o portador de gravação BR0205394A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP01201925 2001-05-22
PCT/IB2002/001772 WO2002095748A2 (en) 2001-05-22 2002-05-17 Record carrier with hidden channel

Publications (1)

Publication Number Publication Date
BR0205394A true BR0205394A (pt) 2003-07-01

Family

ID=8180351

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0205394-2A BR0205394A (pt) 2001-05-22 2002-05-17 Portador de gravação para armazenar um trabalho digital, método para gravar um trabalho digital em um portador de gravação, e, dispositivos para gravar, um trabalho digital em um portador de gravação, e para ler o portador de gravação

Country Status (13)

Country Link
US (1) US8364981B2 (pt)
EP (1) EP1435095A2 (pt)
JP (5) JP4944355B2 (pt)
KR (1) KR100926962B1 (pt)
CN (1) CN100458948C (pt)
AR (1) AR033905A1 (pt)
AU (1) AU2002258089A1 (pt)
BR (1) BR0205394A (pt)
MX (1) MXPA03000471A (pt)
RU (1) RU2297677C2 (pt)
TW (1) TWI239479B (pt)
WO (1) WO2002095748A2 (pt)
ZA (1) ZA200309056B (pt)

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Also Published As

Publication number Publication date
WO2002095748A3 (en) 2004-02-26
TWI239479B (en) 2005-09-11
JP2011181179A (ja) 2011-09-15
AR033905A1 (es) 2004-01-07
JP5690363B2 (ja) 2015-03-25
CN100458948C (zh) 2009-02-04
AU2002258089A1 (en) 2002-12-03
CN1554087A (zh) 2004-12-08
KR20030019597A (ko) 2003-03-06
JP2013140666A (ja) 2013-07-18
JP5256235B2 (ja) 2013-08-07
JP2010198727A (ja) 2010-09-09
RU2297677C2 (ru) 2007-04-20
WO2002095748A2 (en) 2002-11-28
JP2004527065A (ja) 2004-09-02
JP5256326B2 (ja) 2013-08-07
MXPA03000471A (es) 2003-10-14
RU2003136771A (ru) 2005-03-27
EP1435095A2 (en) 2004-07-07
JP2013109826A (ja) 2013-06-06
US8364981B2 (en) 2013-01-29
KR100926962B1 (ko) 2009-11-17
US20030007437A1 (en) 2003-01-09
ZA200309056B (en) 2005-01-06
JP4944355B2 (ja) 2012-05-30
JP5739925B2 (ja) 2015-06-24

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