GB2322030B - Digital recording protection system - Google Patents

Digital recording protection system

Info

Publication number
GB2322030B
GB2322030B GB9725557A GB9725557A GB2322030B GB 2322030 B GB2322030 B GB 2322030B GB 9725557 A GB9725557 A GB 9725557A GB 9725557 A GB9725557 A GB 9725557A GB 2322030 B GB2322030 B GB 2322030B
Authority
GB
United Kingdom
Prior art keywords
protection system
digital recording
recording protection
digital
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
GB9725557A
Other versions
GB9725557D0 (en
GB2322030A (en
Inventor
Yossef Tsuria
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.)
Synamedia Ltd
Original Assignee
NDS Ltd
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 NDS Ltd filed Critical NDS Ltd
Priority to US09/014,791 priority Critical patent/US6178242B1/en
Priority to EP98300596A priority patent/EP0858184A3/en
Publication of GB9725557D0 publication Critical patent/GB9725557D0/en
Publication of GB2322030A publication Critical patent/GB2322030A/en
Application granted granted Critical
Publication of GB2322030B publication Critical patent/GB2322030B/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
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
    • H04N7/163—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing by receiver means only
    • 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
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/418—External card to be used in combination with the client device, e.g. for conditional access
    • H04N21/4181—External card to be used in combination with the client device, e.g. for conditional access for conditional access
    • 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
    • H04N21/432—Content retrieval operation from a local storage medium, e.g. hard-disk
    • H04N21/4325—Content retrieval operation from a local storage medium, e.g. hard-disk by playing back content from the storage medium
    • 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
    • H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
    • H04N21/4334—Recording operations
    • 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]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/835—Generation of protective data, e.g. certificates
    • H04N21/8355—Generation of protective data, e.g. certificates involving usage data, e.g. number of copies or viewings allowed
    • 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
    • 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
    • H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N5/926—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback by pulse code modulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Databases & Information Systems (AREA)
  • Television Signal Processing For Recording (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
GB9725557A 1997-02-07 1997-12-03 Digital recording protection system Expired - Lifetime GB2322030B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US09/014,791 US6178242B1 (en) 1997-02-07 1998-01-28 Digital recording protection system
EP98300596A EP0858184A3 (en) 1997-02-07 1998-01-28 Digital recording protection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IL12017497A IL120174A (en) 1997-02-07 1997-02-07 Digital recording protection system

Publications (3)

Publication Number Publication Date
GB9725557D0 GB9725557D0 (en) 1998-02-04
GB2322030A GB2322030A (en) 1998-08-12
GB2322030B true GB2322030B (en) 1999-08-18

Family

ID=11069775

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9725557A Expired - Lifetime GB2322030B (en) 1997-02-07 1997-12-03 Digital recording protection system

Country Status (2)

Country Link
GB (1) GB2322030B (en)
IL (1) IL120174A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL125141A0 (en) 1998-06-29 1999-01-26 Nds Ltd Advanced television system
US6987854B2 (en) 1997-09-25 2006-01-17 Thomson Licensing S.A. Method and apparatus for recording of encrypted digital data
IL129725A (en) 1999-05-02 2011-06-30 Nds Ltd Watermark system
KR100605825B1 (en) * 1999-09-14 2006-07-31 삼성전자주식회사 A copy protection apparatus and method of a broadcast receiving system having a hdd
WO2002030118A1 (en) * 2000-09-30 2002-04-11 Keen Personal Media, Inc. System and method for recording and viewing conditionally accessible video programs
US20040083177A1 (en) * 2002-10-29 2004-04-29 General Instrument Corporation Method and apparatus for pre-encrypting VOD material with a changing cryptographic key
EP1887729A3 (en) 2006-03-21 2011-07-13 Irdeto Access B.V. Method of providing an encrypted data stream

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0471373A2 (en) * 1990-08-17 1992-02-19 General Instrument Corporation Of Delaware Information processing apparatus with replaceable security element
EP0506435A2 (en) * 1991-03-29 1992-09-30 Scientific-Atlanta, Inc. Independent external security module for a digitally upgradeable television signal decoder

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0471373A2 (en) * 1990-08-17 1992-02-19 General Instrument Corporation Of Delaware Information processing apparatus with replaceable security element
EP0506435A2 (en) * 1991-03-29 1992-09-30 Scientific-Atlanta, Inc. Independent external security module for a digitally upgradeable television signal decoder

Also Published As

Publication number Publication date
IL120174A0 (en) 1997-06-10
IL120174A (en) 1999-10-28
GB9725557D0 (en) 1998-02-04
GB2322030A (en) 1998-08-12

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20090528 AND 20090603

PE20 Patent expired after termination of 20 years

Expiry date: 20171202