ES2070188T3 - Procedimiento de codificacion y de descodificacion de señales de video compuestas y dispositivo para su puesta en practica. - Google Patents

Procedimiento de codificacion y de descodificacion de señales de video compuestas y dispositivo para su puesta en practica.

Info

Publication number
ES2070188T3
ES2070188T3 ES89403552T ES89403552T ES2070188T3 ES 2070188 T3 ES2070188 T3 ES 2070188T3 ES 89403552 T ES89403552 T ES 89403552T ES 89403552 T ES89403552 T ES 89403552T ES 2070188 T3 ES2070188 T3 ES 2070188T3
Authority
ES
Spain
Prior art keywords
video signals
composite video
coding
implementation
decoding procedure
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 - Lifetime
Application number
ES89403552T
Other languages
English (en)
Inventor
Michel Leduc
Francis Renard
Joel Hamon
Jean-Claude Guillon
Eric Diehl
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.)
EUROP RECH ELECTR LAB
Laboratoire Europeen de Recherches Electroniques Avancees SNC
Original Assignee
EUROP RECH ELECTR LAB
Laboratoire Europeen de Recherches Electroniques Avancees SNC
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 EUROP RECH ELECTR LAB, Laboratoire Europeen de Recherches Electroniques Avancees SNC filed Critical EUROP RECH ELECTR LAB
Application granted granted Critical
Publication of ES2070188T3 publication Critical patent/ES2070188T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Television Systems (AREA)
  • Electrostatic Separation (AREA)
  • Television Signal Processing For Recording (AREA)
  • Glass Compositions (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

EL PROCEDIMIENTO DEL INVENTO CONSISTE DURANTE LA EMISION DE SEÑALES DE VIDEO COMPUESTAS, EN LA QUE SE INCLUYEN SERIES DE MENSAJES DE ACCESO (ECM1,ECM2), Y DURANTE LA ELIMINACION DE INTERFERENCIAS, QUE SE EFECTUA MEDIANTE UN LECTOR DE TARJETA LA CUAL CONSTA DE DATOS NUMERICOS CODIFICADOS, EN UTILIZAR UN PROCEDIMIENTO INTERACTIVO DE IDENTIFICACION DE UNA SEÑAL NUMERICA.
ES89403552T 1988-12-23 1989-12-19 Procedimiento de codificacion y de descodificacion de señales de video compuestas y dispositivo para su puesta en practica. Expired - Lifetime ES2070188T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8817092A FR2641152B1 (es) 1988-12-23 1988-12-23

Publications (1)

Publication Number Publication Date
ES2070188T3 true ES2070188T3 (es) 1995-06-01

Family

ID=9373355

Family Applications (1)

Application Number Title Priority Date Filing Date
ES89403552T Expired - Lifetime ES2070188T3 (es) 1988-12-23 1989-12-19 Procedimiento de codificacion y de descodificacion de señales de video compuestas y dispositivo para su puesta en practica.

Country Status (11)

Country Link
EP (1) EP0375539B1 (es)
JP (1) JP2911595B2 (es)
AT (1) ATE118950T1 (es)
BR (1) BR8907275A (es)
CA (1) CA2006459A1 (es)
DE (1) DE68921316T2 (es)
ES (1) ES2070188T3 (es)
FR (1) FR2641152B1 (es)
MX (1) MX172194B (es)
NZ (1) NZ232005A (es)
WO (1) WO1990007845A1 (es)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9003325D0 (en) * 1990-02-14 1990-04-11 Enfranchise Sixty Ltd Apparatus and method for controlling access to broadcast signals
FR2703552A1 (fr) * 1993-03-31 1994-10-07 Philips Electronics Nv Procédé et dispositif pour l'embrouillage et le désembrouillage d'une émission déterminée de télévision.
FR2750554B1 (fr) * 1996-06-28 1998-08-14 Thomson Multimedia Sa Systeme a acces conditionnel et carte a puce permettant un tel acces
IL123554A (en) * 1998-03-04 2003-01-12 Nds Ltd Key delivery in a secure broadcasting system
RU2001104531A (ru) 1998-07-20 2003-02-10 Каналь+Сосьетэ Аноним (Fr) Система навигации для системы многоканального цифрового телевидения
FR2804272B1 (fr) * 2000-01-25 2003-08-01 Tonna Electronique Systeme de controle d'acces d'un utilisateur a des programmes videos, transcodeur, decodeur et procede de controle d'acces d'un tel systeme
US7397918B2 (en) 2000-05-22 2008-07-08 Nds Limited Dynamically shifting control word
EP2230845A1 (en) * 2009-03-16 2010-09-22 Irdeto Access B.V. Providing control words to a receiver
CN111310220B (zh) * 2020-03-12 2023-07-28 四川大学 基于新型三维矢量分解的彩色图像加密方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1253616A (en) * 1982-07-29 1989-05-02 Robert W. Field Secure coding and decoding system and method for television program signals
GB2143352A (en) * 1983-07-15 1985-02-06 Philips Electronic Associated Authorising coded signals
GB2151886A (en) * 1983-12-21 1985-07-24 British Broadcasting Corp Conditional-access broadcast transmission

Also Published As

Publication number Publication date
DE68921316T2 (de) 1995-08-31
EP0375539A1 (fr) 1990-06-27
JPH03504313A (ja) 1991-09-19
NZ232005A (en) 1991-11-26
MX172194B (es) 1993-12-07
FR2641152A1 (es) 1990-06-29
WO1990007845A1 (fr) 1990-07-12
ATE118950T1 (de) 1995-03-15
BR8907275A (pt) 1991-03-12
DE68921316D1 (de) 1995-03-30
JP2911595B2 (ja) 1999-06-23
FR2641152B1 (es) 1996-05-10
EP0375539B1 (fr) 1995-02-22
CA2006459A1 (fr) 1990-06-23

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