FR2732537B1 - METHOD AND INSTALLATION FOR RECORDING ENCRYPTED DIGITAL INFORMATION - Google Patents

METHOD AND INSTALLATION FOR RECORDING ENCRYPTED DIGITAL INFORMATION

Info

Publication number
FR2732537B1
FR2732537B1 FR9503859A FR9503859A FR2732537B1 FR 2732537 B1 FR2732537 B1 FR 2732537B1 FR 9503859 A FR9503859 A FR 9503859A FR 9503859 A FR9503859 A FR 9503859A FR 2732537 B1 FR2732537 B1 FR 2732537B1
Authority
FR
France
Prior art keywords
installation
digital information
encrypted digital
recording encrypted
recording
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
FR9503859A
Other languages
French (fr)
Other versions
FR2732537A1 (en
Inventor
Jacques Duverne
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canal Plus SA
Original Assignee
Canal Plus SA
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 Canal Plus SA filed Critical Canal Plus SA
Priority to FR9503859A priority Critical patent/FR2732537B1/en
Publication of FR2732537A1 publication Critical patent/FR2732537A1/en
Application granted granted Critical
Publication of FR2732537B1 publication Critical patent/FR2732537B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/4367—Establishing a secure communication between the client and a peripheral device or smart card
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/4408—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream encryption, e.g. re-encrypting a decrypted video stream for redistribution in a home network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/913—Television signal processing therefor for scrambling ; for copy protection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
    • H04N7/1675—Providing digital key or authorisation information for generation or regeneration of the scrambling sequence
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/913—Television signal processing therefor for scrambling ; for copy protection
    • H04N2005/91357—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal
    • H04N2005/91364—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal the video signal being scrambled

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
FR9503859A 1995-03-31 1995-03-31 METHOD AND INSTALLATION FOR RECORDING ENCRYPTED DIGITAL INFORMATION Expired - Lifetime FR2732537B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9503859A FR2732537B1 (en) 1995-03-31 1995-03-31 METHOD AND INSTALLATION FOR RECORDING ENCRYPTED DIGITAL INFORMATION

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9503859A FR2732537B1 (en) 1995-03-31 1995-03-31 METHOD AND INSTALLATION FOR RECORDING ENCRYPTED DIGITAL INFORMATION

Publications (2)

Publication Number Publication Date
FR2732537A1 FR2732537A1 (en) 1996-10-04
FR2732537B1 true FR2732537B1 (en) 1997-06-13

Family

ID=9477654

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9503859A Expired - Lifetime FR2732537B1 (en) 1995-03-31 1995-03-31 METHOD AND INSTALLATION FOR RECORDING ENCRYPTED DIGITAL INFORMATION

Country Status (1)

Country Link
FR (1) FR2732537B1 (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0858184A3 (en) * 1997-02-07 1999-09-01 Nds Limited Digital recording protection system
EP0912052A1 (en) * 1997-09-25 1999-04-28 CANAL+ Société Anonyme Method and apparatus for recording of encrypted digital data
US7778418B1 (en) 1998-01-08 2010-08-17 Samsung Electronics Co., Ltd. System and method for copy protection for digital signals
US8300832B2 (en) 1998-01-08 2012-10-30 Samsung Electronics Co., Ltd. System and method for copy protection for digital signals
EP0936812A1 (en) * 1998-02-13 1999-08-18 CANAL+ Société Anonyme Method and apparatus for recording of encrypted digital data
JO2117B1 (en) * 1998-07-15 2000-05-21 كانال + تيكنولوجيز سوسيته انونيم method and apparatus for secure communication of information between aplurality of digital audiovisual devices
IL141424A0 (en) * 1998-08-31 2002-03-10 Thomson Licensing Sa A copy protection system for home networks
DE19923250A1 (en) * 1999-05-20 2000-11-23 Beta Res Gmbh Data distribution security system stores data encrypted with individual key prevents unauthorized distribution
FR2809915B1 (en) * 2000-06-06 2003-01-03 Sagem SECURE RECORDING METHOD IN A TELEVISION DECODER
EP1182874A1 (en) 2000-08-24 2002-02-27 Canal+ Technologies Société Anonyme Digital content protection system
US6959090B1 (en) 2000-11-20 2005-10-25 Nokia Corporation Content Protection scheme for a digital recording device
IL156474A0 (en) * 2001-01-16 2004-01-04 Nagracard Sa Method for storing encrypted data
DE10135888A1 (en) * 2001-07-24 2003-03-13 Scm Microsystems Gmbh Process for the local recording of digital data for digital television
EP1320006A1 (en) 2001-12-12 2003-06-18 Canal+ Technologies Société Anonyme Processing data
US8082588B2 (en) * 2002-03-15 2011-12-20 Nagravision S.A. Secured storage method of encrypted data on a personal digital recorder
KR100574974B1 (en) 2004-02-26 2006-05-02 삼성전자주식회사 Apparatus and method having conditional access and copy protection scheme for encoded broadcast data
EP1703731A1 (en) * 2005-03-15 2006-09-20 Nagravision S.A. Method to encrypt content with conditional access

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2986476B2 (en) * 1988-07-29 1999-12-06 松下電器産業株式会社 Recording system
JPH03291083A (en) * 1990-04-09 1991-12-20 Matsushita Electric Ind Co Ltd Key signal converter for catv system
FR2663179B1 (en) * 1990-06-08 1992-09-11 Matra Communication TRANSCONTROLLER METHOD AND DEVICE FOR INSTALLATION OF BROADCASTING OF CONDITIONAL ACCESS TELEVISION PROGRAMS.

Also Published As

Publication number Publication date
FR2732537A1 (en) 1996-10-04

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Legal Events

Date Code Title Description
CJ Change in legal form
TP Transmission of property