CA1337214C - Controleur intrabande - Google Patents

Controleur intrabande

Info

Publication number
CA1337214C
CA1337214C CA000598213A CA598213A CA1337214C CA 1337214 C CA1337214 C CA 1337214C CA 000598213 A CA000598213 A CA 000598213A CA 598213 A CA598213 A CA 598213A CA 1337214 C CA1337214 C CA 1337214C
Authority
CA
Canada
Prior art keywords
data
band
receiving
television channel
set top
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
CA000598213A
Other languages
English (en)
Inventor
Robert O. Banker
Randolph J. Schaubs
Michael Harney
Jay Cauthern Mcmullen, Jr.
Anthony J. Wasilewski
Gregory S. Durden
Ray Thomas Haman, Jr.
David Naddor
William Bradford Thatcher, Jr.
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.)
Scientific Atlanta LLC
Original Assignee
Scientific Atlanta LLC
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 Scientific Atlanta LLC filed Critical Scientific Atlanta LLC
Application granted granted Critical
Publication of CA1337214C publication Critical patent/CA1337214C/fr
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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Earth Drilling (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Control Of Eletrric Generators (AREA)
CA000598213A 1988-04-29 1989-04-28 Controleur intrabande Expired - Fee Related CA1337214C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US18848188A 1988-04-29 1988-04-29
US188,481 1988-04-29

Publications (1)

Publication Number Publication Date
CA1337214C true CA1337214C (fr) 1995-10-03

Family

ID=22693343

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000598213A Expired - Fee Related CA1337214C (fr) 1988-04-29 1989-04-28 Controleur intrabande

Country Status (8)

Country Link
EP (1) EP0413752A4 (fr)
JP (1) JPH03505392A (fr)
CN (1) CN1020324C (fr)
AU (1) AU626228B2 (fr)
BR (1) BR8907409A (fr)
CA (1) CA1337214C (fr)
MX (1) MX172482B (fr)
WO (1) WO1989010664A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5497187A (en) * 1991-11-29 1996-03-05 Scientific-Atlanta, Inc. In-band/out-of-band data transmission method and apparatus for a television system
US5477262A (en) * 1991-11-29 1995-12-19 Scientific-Altanta, Inc. Method and apparatus for providing an on-screen user interface for a subscription television terminal
EP0716546B1 (fr) * 1994-12-07 1999-08-25 Philips Electronique Grand Public Procédé d'adressage d'usagers dans un système de télévision à accès réservé
US5874985A (en) * 1995-08-31 1999-02-23 Microsoft Corporation Message delivery method for interactive televideo system
US6005602A (en) * 1995-08-31 1999-12-21 Microsoft Corporation Message delivery method for interactive televideo system
US6950520B1 (en) 1999-01-26 2005-09-27 Macrovision Corporation Method and apparatus for carrying data in a video signal so that the data is not recorded
AU2632300A (en) * 1999-01-26 2000-08-07 Macrovision Corporation Method and apparatus for carrying data with a video signal so that the data is not recorded

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4334322A (en) * 1979-10-26 1982-06-08 E-Systems, Inc. Communication management system for providing antijam/privacy capabilities for voice radio communications
US4536791A (en) * 1980-03-31 1985-08-20 Tocom, Inc. Addressable cable television control system with video format data transmission
US4823386A (en) * 1981-04-02 1989-04-18 Texscan Corporation Addressable subscriber cable television system
US4434436A (en) * 1981-07-13 1984-02-28 Bruce Merrill Addressable premium channel obfuscation device for cable television systems
US4694490A (en) * 1981-11-03 1987-09-15 Harvey John C Signal processing apparatus and methods
US4450477A (en) * 1982-03-31 1984-05-22 Lovett Bruce E Television information system
CA1177558A (fr) * 1982-04-15 1984-11-06 Groupe Videotron Ltee. (Le) Systeme de transmission de donnees par reseau cable
DE3382546D1 (de) * 1982-05-14 1992-05-27 Communications Patents Ltd Kommunikationssystem.
US4521770A (en) * 1982-08-30 1985-06-04 International Business Machines Corporation Use of inversions in the near realtime control of selected functions in interactive buffered raster displays
US4580161A (en) * 1982-11-22 1986-04-01 Pico Products, Inc. Cable television subscriber control system including addressable filters having a variable pole
US4709418A (en) * 1983-09-14 1987-11-24 British Telecommunications Public Limited Company Wideband cable network
JPS6096978A (ja) * 1983-10-31 1985-05-30 Clarion Co Ltd 有料テレビジヨンシステム
JPS60130282A (ja) * 1983-12-16 1985-07-11 Pioneer Electronic Corp Ｃａｔｖにおけるデ−タ伝送方式
US4802220A (en) * 1985-03-20 1989-01-31 American Telephone And Telegraph Company, At&T Bell Laboratories Method and apparatus for multi-channel communication security
US4716588A (en) * 1985-10-29 1987-12-29 Payview Limited Addressable subscription television system having multiple scrambling modes
US4710955A (en) * 1985-11-25 1987-12-01 General Instrument Corporation Cable television system with two-way telephone communication path
US4817144A (en) * 1987-03-12 1989-03-28 Zenith Electronics Corporation Secure TV scrambling system using framing code switching

Also Published As

Publication number Publication date
JPH03505392A (ja) 1991-11-21
CN1020324C (zh) 1993-04-14
MX172482B (es) 1993-12-17
WO1989010664A1 (fr) 1989-11-02
EP0413752A1 (fr) 1991-02-27
BR8907409A (pt) 1991-04-16
CN1040476A (zh) 1990-03-14
AU626228B2 (en) 1992-07-23
AU3562589A (en) 1989-11-24
EP0413752A4 (en) 1992-04-22

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Legal Events

Date Code Title Description
MKLA Lapsed
MKLA Lapsed

Effective date: 19981005