BR8907275A - Processo de embaralhamento e de desembaralhamento de sinais video compositos e dispositivo de execucao - Google Patents

Processo de embaralhamento e de desembaralhamento de sinais video compositos e dispositivo de execucao

Info

Publication number
BR8907275A
BR8907275A BR898907275A BR8907275A BR8907275A BR 8907275 A BR8907275 A BR 8907275A BR 898907275 A BR898907275 A BR 898907275A BR 8907275 A BR8907275 A BR 8907275A BR 8907275 A BR8907275 A BR 8907275A
Authority
BR
Brazil
Prior art keywords
composite video
dismembling
miscellaneous
execution device
video signs
Prior art date
Application number
BR898907275A
Other languages
English (en)
Portuguese (pt)
Inventor
Michel Leduc
Joel Hamon
Jean-Claude Guillon
Francis Renard
Original Assignee
Europ Rech Electr Lab
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 filed Critical Europ Rech Electr Lab
Publication of BR8907275A publication Critical patent/BR8907275A/pt

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)
BR898907275A 1988-12-23 1989-12-08 Processo de embaralhamento e de desembaralhamento de sinais video compositos e dispositivo de execucao BR8907275A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8817092A FR2641152B1 (enExample) 1988-12-23 1988-12-23
PCT/FR1989/000636 WO1990007845A1 (fr) 1988-12-23 1989-12-08 Embrouillage et desembrouillage de signaux video composites

Publications (1)

Publication Number Publication Date
BR8907275A true BR8907275A (pt) 1991-03-12

Family

ID=9373355

Family Applications (1)

Application Number Title Priority Date Filing Date
BR898907275A BR8907275A (pt) 1988-12-23 1989-12-08 Processo de embaralhamento e de desembaralhamento de sinais video compositos e dispositivo de execucao

Country Status (11)

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

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
HU228951B1 (en) 1998-07-20 2013-07-29 Thomson Licensing Sa Navigation system for a multichannel digital television system
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
AU2001256645A1 (en) 2000-05-22 2001-12-03 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
EP0375539B1 (fr) 1995-02-22
DE68921316D1 (de) 1995-03-30
NZ232005A (en) 1991-11-26
FR2641152B1 (enExample) 1996-05-10
ATE118950T1 (de) 1995-03-15
CA2006459A1 (fr) 1990-06-23
JPH03504313A (ja) 1991-09-19
EP0375539A1 (fr) 1990-06-27
FR2641152A1 (enExample) 1990-06-29
JP2911595B2 (ja) 1999-06-23
DE68921316T2 (de) 1995-08-31
MX172194B (es) 1993-12-07
ES2070188T3 (es) 1995-06-01
WO1990007845A1 (fr) 1990-07-12

Similar Documents

Publication Publication Date Title
US4605846A (en) Optically readable card carrying digital data, and an access control system using said card
EP1086771A3 (en) Apparatus and method for teaching an automatic soldering apparatus
CA2039651A1 (en) Form and system utilizing encoded indications for form field processing
AU5031296A (en) Device and method for processing coded information for barcode and chip card
DK0715426T3 (da) Multipleksmodtager og multipleksmodtagende system til rundspredning
ES2153005T3 (es) Sistemas de acceso protegido.
DK0587488T3 (da) Indretning til læsning af magnetiske og optiske koder
FR2501396B1 (fr) Systeme de controle d'acces, notamment pour le passage de points de peage
ATE314789T1 (de) Fernladen von anwendungen in einen digitalen decoder
GB9724183D0 (en) Identification system
ZA812365B (en) Method and apparatus for the identification of articles
BR8907275A (pt) Processo de embaralhamento e de desembaralhamento de sinais video compositos e dispositivo de execucao
AU7457287A (en) Credit card embossing and recording system
DE59813257D1 (de) System zur Bereitstellung von fälschungssicherer Information über einen Artikel
ES2164463T3 (es) Procedimiento de gestion de datos en una tarjeta con chip.
GB9209539D0 (en) Data system,reader unit for reading an inductively powered token,and such token
JPS6481087A (en) Ic card data transmission system
JPS5668053A (en) Facsimile device
PT731955E (pt) Processo e dispositivo para a deteccao e o reconhecimento automatico de informacao registada
EP0278207A3 (en) Certificate against infringment for the guarantee of origin and the control of the management of the product to which it is combined
JPS5356928A (en) Bar-code label reader
FR2686531B1 (fr) Dispositif de manipulation de cartes, notamment d'informations publicitaires et machine d'empilage de cartes comportant un tel dispositif.
DE3852965D1 (de) Informationsverarbeitungssystem mit IC-Karte.
WO1998012864A3 (en) Picture information converting method and apparatus
SE8703332L (enExample)

Legal Events

Date Code Title Description
FG Letter patent granted
TC Change of name
TC Change of name
HHT Entry of change of name and/or headquarter and transfer of application, patent and certificate of addition of invention: republication

Free format text: ALTERADO DE: LABORATORIES EUROPEEN DE RECHERCHES ELECTRONIQUES AVANCEES. REFERENCIA RPI NO 1450 DE 06/10/98 - CODIGO 25.4 - ITEM (71)

B21A Patent or certificate of addition expired [chapter 21.1 patent gazette]

Free format text: PATENTE EXTINTA EM 08/12/2004