GB8625487D0 - Decoding transmitted scrambled signals - Google Patents

Decoding transmitted scrambled signals

Info

Publication number
GB8625487D0
GB8625487D0 GB868625487A GB8625487A GB8625487D0 GB 8625487 D0 GB8625487 D0 GB 8625487D0 GB 868625487 A GB868625487 A GB 868625487A GB 8625487 A GB8625487 A GB 8625487A GB 8625487 D0 GB8625487 D0 GB 8625487D0
Authority
GB
United Kingdom
Prior art keywords
scrambled signals
decoding transmitted
transmitted scrambled
decoding
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.)
Withdrawn
Application number
GB868625487A
Other versions
GB2193867A (en
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries 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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB8625487D0 publication Critical patent/GB8625487D0/en
Priority to US07/079,541 priority Critical patent/US4937866A/en
Priority to DE3789178T priority patent/DE3789178T2/en
Priority to EP87201500A priority patent/EP0256596B1/en
Priority to FI873461A priority patent/FI83828C/en
Priority to JP62199245A priority patent/JPH0793621B2/en
Publication of GB2193867A publication Critical patent/GB2193867A/en
Withdrawn legal-status Critical Current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
    • 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
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
    • H04N21/26606—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel for generating or managing entitlement messages, e.g. Entitlement Control Message [ECM] or Entitlement Management Message [EMM]
    • 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
    • H04N21/47—End-user applications
    • H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
    • H04N21/47211—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for requesting pay-per-view content
    • 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]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/633—Control signals issued by server directed to the network components or client
    • H04N21/6332—Control signals issued by server directed to the network components or client directed to client
    • H04N21/6334—Control signals issued by server directed to the network components or client directed to client for authorisation, e.g. by transmitting a key
    • H04N21/63345—Control signals issued by server directed to the network components or client directed to client for authorisation, e.g. by transmitting a key by transmitting keys
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Databases & Information Systems (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Human Computer Interaction (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
GB08625487A 1986-08-13 1986-10-24 Decoding transmitted scrambled signals in a pay television system Withdrawn GB2193867A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US07/079,541 US4937866A (en) 1986-08-13 1987-07-29 System for decoding transmitted scrambled signals
DE3789178T DE3789178T2 (en) 1986-08-13 1987-08-06 Decoding transmitted veiled signals.
EP87201500A EP0256596B1 (en) 1986-08-13 1987-08-06 Decoding transmitted scrambled signals
FI873461A FI83828C (en) 1986-08-13 1987-08-10 FOERFARANDE FOER DEKODNING AV SAENDA FOERVRAENGDA SIGNALER.
JP62199245A JPH0793621B2 (en) 1986-08-13 1987-08-11 System for decoding scrambled signal transmitted to receiver and receiver used in the system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB868619737A GB8619737D0 (en) 1986-08-13 1986-08-13 Business management

Publications (2)

Publication Number Publication Date
GB8625487D0 true GB8625487D0 (en) 1986-11-26
GB2193867A GB2193867A (en) 1988-02-17

Family

ID=10602671

Family Applications (2)

Application Number Title Priority Date Filing Date
GB868619737A Pending GB8619737D0 (en) 1986-08-13 1986-08-13 Business management
GB08625487A Withdrawn GB2193867A (en) 1986-08-13 1986-10-24 Decoding transmitted scrambled signals in a pay television system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB868619737A Pending GB8619737D0 (en) 1986-08-13 1986-08-13 Business management

Country Status (1)

Country Link
GB (2) GB8619737D0 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2237711A (en) * 1989-07-31 1991-05-08 Rank Brimar Ltd Security of video monitors.
US5179446A (en) * 1991-10-22 1993-01-12 Samsung Electronics Co., Ltd. Radio transmitting and receiving circuits of a video camera having a detached view finder
GB9407038D0 (en) * 1994-04-08 1994-06-01 Amstrad Plc Method and apparatus for transmitting and receiving encrypted signals
UA69439C2 (en) * 1999-07-09 2004-09-15 Награвізьйон Са System for performing purchase being influenced by the impulse for pay television

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4621285A (en) * 1980-12-10 1986-11-04 Jerrold Division, General Instrument Corporation Protected television signal distribution system

Also Published As

Publication number Publication date
GB2193867A (en) 1988-02-17
GB8619737D0 (en) 1986-09-24

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)