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MX172482B - Controlador en banda - Google Patents

Controlador en banda

Info

Publication number
MX172482B
MX172482B MX015855A MX1585589A MX172482B MX 172482 B MX172482 B MX 172482B MX 015855 A MX015855 A MX 015855A MX 1585589 A MX1585589 A MX 1585589A MX 172482 B MX172482 B MX 172482B
Authority
MX
Mexico
Prior art keywords
data
transmitted
receive
band
television channel
Prior art date
Application number
MX015855A
Other languages
English (en)
Inventor
Jay C Mcmullan
Jr Anthony J Wasilewski
Gregory S Durden
Ray T Haman Jr
David Naddor
Willam B Thatcher Jr
Robert O Banker
Randolph J Schaubs
Michael Harne
Original Assignee
Scientific Atlanta
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 filed Critical Scientific Atlanta
Publication of MX172482B publication Critical patent/MX172482B/es

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)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Control Of Eletrric Generators (AREA)
  • Earth Drilling (AREA)

Abstract

La presente invención se refiere a un controlador de banda de sistema de cable televisión que comprende un generador de datos para generar datos capaces de ser transmitidos a través de una trayectoria de transmisión, un transmisor para transmitir por lo menos un canal de televisión, un mezclador, un receptor superior de tipo en banda en una primera ubicación predeterminada para recibir por lo menos un canal de televisión y para recibir los datos transmitidos dentro de por lo menos un canal de televisión y un receptor superior de tipo fuera de banda en una segunda ubicación predeterminada para recibir por lo menos un canal de televisión y recibir los datos transmitidos al exterior de por lo menos un canal de televisión y mediante otro canal de transmisión transmitido por el sistema de cable, un aparato de control de datos generados caracterizado por contener un controlador conectado funcionablemente entre el generador de datos y el mezclador para recibir y analizar los datos recibidos por el generador de datos a fin de determinar si el dato va a ser transmitido al receptor superior de tipo en banda o receptor superior del tipo fuera de banda para controlar la trayectoria de transmisión a través de la cual se transmite el dato.
MX015855A 1988-04-29 1989-04-28 Controlador en banda MX172482B (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US18848188A 1988-04-29 1988-04-29

Publications (1)

Publication Number Publication Date
MX172482B true MX172482B (es) 1993-12-17

Family

ID=22693343

Family Applications (1)

Application Number Title Priority Date Filing Date
MX015855A MX172482B (es) 1988-04-29 1989-04-28 Controlador en banda

Country Status (8)

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

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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
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
US6005602A (en) * 1995-08-31 1999-12-21 Microsoft Corporation Message delivery method for interactive televideo system
US5874985A (en) * 1995-08-31 1999-02-23 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
JP3676679B2 (ja) * 1999-01-26 2005-07-27 マクロビジョン・コーポレーション データが記録されないようにビデオ信号でデータを転送するための方法及び装置

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
JPS57500537A (es) * 1980-03-31 1982-03-25
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 (en) * 1982-04-15 1984-11-06 Groupe Videotron Ltee. (Le) Cable network data transmission system
EP0401873A3 (en) * 1982-05-14 1991-09-18 Communications Patents Limited A communications system
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
AU3562589A (en) 1989-11-24
CN1040476A (zh) 1990-03-14
CA1337214C (en) 1995-10-03
CN1020324C (zh) 1993-04-14
EP0413752A1 (en) 1991-02-27
AU626228B2 (en) 1992-07-23
BR8907409A (pt) 1991-04-16
WO1989010664A1 (en) 1989-11-02
EP0413752A4 (en) 1992-04-22
JPH03505392A (ja) 1991-11-21

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