DE69418112T2 - Verschlüsselungsgerät für digitale Videosignale - Google Patents

Verschlüsselungsgerät für digitale Videosignale

Info

Publication number
DE69418112T2
DE69418112T2 DE69418112T DE69418112T DE69418112T2 DE 69418112 T2 DE69418112 T2 DE 69418112T2 DE 69418112 T DE69418112 T DE 69418112T DE 69418112 T DE69418112 T DE 69418112T DE 69418112 T2 DE69418112 T2 DE 69418112T2
Authority
DE
Germany
Prior art keywords
digital video
video signals
encryption device
encryption
signals
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 - Fee Related
Application number
DE69418112T
Other languages
English (en)
Other versions
DE69418112D1 (de
Inventor
Naohisa Kitazato
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Application granted granted Critical
Publication of DE69418112D1 publication Critical patent/DE69418112D1/de
Publication of DE69418112T2 publication Critical patent/DE69418112T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H04N7/167—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
    • 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
    • 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]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2389—Multiplex stream processing, e.g. multiplex stream encrypting
    • H04N21/23895—Multiplex stream processing, e.g. multiplex stream encrypting involving multiplex stream encryption
    • H04N21/23897—Multiplex stream processing, e.g. multiplex stream encrypting involving multiplex stream encryption by partially encrypting, e.g. encrypting only the ending portion of a movie
    • 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
    • H04N21/4405—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 decryption
    • H04N21/44055—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 decryption by partially decrypting, e.g. decrypting a video stream that has been partially encrypted

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Security & Cryptography (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
DE69418112T 1993-07-30 1994-07-19 Verschlüsselungsgerät für digitale Videosignale Expired - Fee Related DE69418112T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5189510A JP2707950B2 (ja) 1993-07-30 1993-07-30 ディジタル画像情報処理装置

Publications (2)

Publication Number Publication Date
DE69418112D1 DE69418112D1 (de) 1999-06-02
DE69418112T2 true DE69418112T2 (de) 1999-11-04

Family

ID=16242481

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69418112T Expired - Fee Related DE69418112T2 (de) 1993-07-30 1994-07-19 Verschlüsselungsgerät für digitale Videosignale

Country Status (6)

Country Link
US (1) US5600721A (de)
EP (1) EP0637172B1 (de)
JP (1) JP2707950B2 (de)
KR (1) KR100310212B1 (de)
AU (1) AU678479B2 (de)
DE (1) DE69418112T2 (de)

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Also Published As

Publication number Publication date
JPH0746575A (ja) 1995-02-14
KR100310212B1 (ko) 2002-06-20
AU6757594A (en) 1995-02-09
EP0637172B1 (de) 1999-04-28
KR950004240A (ko) 1995-02-17
DE69418112D1 (de) 1999-06-02
AU678479B2 (en) 1997-05-29
US5600721A (en) 1997-02-04
JP2707950B2 (ja) 1998-02-04
EP0637172A1 (de) 1995-02-01

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