TW376656B - A decoding method for processing encrypted video data - Google Patents

A decoding method for processing encrypted video data

Info

Publication number
TW376656B
TW376656B TW086117560A TW86117560A TW376656B TW 376656 B TW376656 B TW 376656B TW 086117560 A TW086117560 A TW 086117560A TW 86117560 A TW86117560 A TW 86117560A TW 376656 B TW376656 B TW 376656B
Authority
TW
Taiwan
Prior art keywords
encryption code
data
decrypted
video data
decoding method
Prior art date
Application number
TW086117560A
Other languages
English (en)
Chinese (zh)
Inventor
Harold Blatter
Thomas Edward Horlander
Kevin Elliott Bridgewater
Michael Scott Deiss
Original Assignee
Thomson Consumer Electronics
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 Thomson Consumer Electronics filed Critical Thomson Consumer Electronics
Application granted granted Critical
Publication of TW376656B publication Critical patent/TW376656B/zh

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
    • H04N21/41—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
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
    • H04N21/4147—PVR [Personal Video Recorder]
    • 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
    • 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
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/462—Content or additional data management e.g. creating a master electronic programme guide from data received from the Internet and a Head-end or controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
    • H04N21/4623—Processing of entitlement messages, e.g. ECM [Entitlement Control Message] or EMM [Entitlement Management Message]

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Storage Device Security (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
TW086117560A 1996-11-27 1997-11-24 A decoding method for processing encrypted video data TW376656B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/762,483 US5878135A (en) 1996-11-27 1996-11-27 Decoding system for processing encrypted broadcast, cable or satellite video data

Publications (1)

Publication Number Publication Date
TW376656B true TW376656B (en) 1999-12-11

Family

ID=25065195

Family Applications (1)

Application Number Title Priority Date Filing Date
TW086117560A TW376656B (en) 1996-11-27 1997-11-24 A decoding method for processing encrypted video data

Country Status (13)

Country Link
US (1) US5878135A (https=)
EP (1) EP0941610B1 (https=)
JP (2) JP4592833B2 (https=)
KR (1) KR100474209B1 (https=)
CN (1) CN1168312C (https=)
AU (1) AU7402398A (https=)
BR (1) BR9714318B1 (https=)
CA (1) CA2272921C (https=)
DE (1) DE69718199T2 (https=)
ES (1) ES2189001T3 (https=)
MY (1) MY117019A (https=)
TW (1) TW376656B (https=)
WO (1) WO1998024236A1 (https=)

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Also Published As

Publication number Publication date
KR100474209B1 (ko) 2005-03-08
JP4592833B2 (ja) 2010-12-08
DE69718199D1 (de) 2003-02-06
JP2001507177A (ja) 2001-05-29
DE69718199T2 (de) 2004-03-25
EP0941610B1 (en) 2003-01-02
US5878135A (en) 1999-03-02
BR9714318A (pt) 2000-02-08
CN1238886A (zh) 1999-12-15
EP0941610A1 (en) 1999-09-15
WO1998024236A1 (en) 1998-06-04
KR20000057198A (ko) 2000-09-15
BR9714318B1 (pt) 2011-06-28
JP2010109996A (ja) 2010-05-13
AU7402398A (en) 1998-06-22
CN1168312C (zh) 2004-09-22
MY117019A (en) 2004-04-30
ES2189001T3 (es) 2003-07-01
CA2272921A1 (en) 1998-06-04
CA2272921C (en) 2006-06-13

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