FR2411527A1 - Recepteur de television apte a recevoir des emissions normales et des emissions cryptees - Google Patents

Recepteur de television apte a recevoir des emissions normales et des emissions cryptees

Info

Publication number
FR2411527A1
FR2411527A1 FR7737155A FR7737155A FR2411527A1 FR 2411527 A1 FR2411527 A1 FR 2411527A1 FR 7737155 A FR7737155 A FR 7737155A FR 7737155 A FR7737155 A FR 7737155A FR 2411527 A1 FR2411527 A1 FR 2411527A1
Authority
FR
France
Prior art keywords
audio
receiver
normal
output amplifiers
demodulators
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.)
Granted
Application number
FR7737155A
Other languages
English (en)
Other versions
FR2411527B1 (fr
Inventor
Lucien Bourassin
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.)
Radiotechnique SA
Original Assignee
Radiotechnique SA
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 Radiotechnique SA filed Critical Radiotechnique SA
Priority to FR7737155A priority Critical patent/FR2411527A1/fr
Publication of FR2411527A1 publication Critical patent/FR2411527A1/fr
Application granted granted Critical
Publication of FR2411527B1 publication Critical patent/FR2411527B1/fr
Granted 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

RECEPTEUR DE TELEVISION ADAPTABLE A LA RECEPTION D'EMISSIONS CRYPTEES. UN BLOC DE DECRYPTAGE PEUT ETRE BRANCHE SUR DEUX PRISES EXTERIEURES DU TELEVISEUR. LE RECEPTEUR EST MUNI DE MOYENS INTERNES D'IDENTIFICATION ET D'AIGUILLAGE DE MODULATIONS CRYPTEES AUDIO ET VIDEO QUI PERMETTENT LA RECEPTION D'EMISSIONS NORMALES EN L'ABSENCE DU BLOC DE DECRYPTAGE. APPLICATION A LA RECEPTION D'EMISSIONS SPECIALISEES EVENTUELLEMENT TAXABLES.
FR7737155A 1977-12-09 1977-12-09 Recepteur de television apte a recevoir des emissions normales et des emissions cryptees Granted FR2411527A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7737155A FR2411527A1 (fr) 1977-12-09 1977-12-09 Recepteur de television apte a recevoir des emissions normales et des emissions cryptees

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7737155A FR2411527A1 (fr) 1977-12-09 1977-12-09 Recepteur de television apte a recevoir des emissions normales et des emissions cryptees

Publications (2)

Publication Number Publication Date
FR2411527A1 true FR2411527A1 (fr) 1979-07-06
FR2411527B1 FR2411527B1 (fr) 1982-10-22

Family

ID=9198671

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7737155A Granted FR2411527A1 (fr) 1977-12-09 1977-12-09 Recepteur de television apte a recevoir des emissions normales et des emissions cryptees

Country Status (1)

Country Link
FR (1) FR2411527A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4509210A (en) * 1981-11-30 1985-04-02 Rca Corporation Television receiver adaptable for descrambler module
US4567516A (en) * 1982-08-30 1986-01-28 Blonder-Tongue Laboratories, Inc. Special program decoding of scrambled subscription television transmissions
US4663664A (en) * 1983-10-31 1987-05-05 R. F. Monolithics, Inc. Electronic ticket method and apparatus for television signal scrambling and descrambling
US4802214A (en) * 1982-04-23 1989-01-31 Eagle Comtronics, Inc. Method and apparatus for identifying and rendering operative particular descramblers in a television signal scrambling system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2843655A (en) * 1951-12-03 1958-07-15 Internat Telemeter Corp Subscription television with scrambled transmission and marquee and barker
US3261911A (en) * 1959-09-03 1966-07-19 Itt Transmission system for imprinted intelligence
FR1492916A (fr) * 1966-05-09 1967-08-25 Procédé de codage et de décodage de signaux de télécommunication et notamment des signaux de télévision, et montage de mise en oeuvre
US3538242A (en) * 1966-01-03 1970-11-03 Zenith Radio Corp Subscriber communication system
US3735027A (en) * 1970-11-02 1973-05-22 Skiatron Electronics Televisio Decoding scrambled television

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2843655A (en) * 1951-12-03 1958-07-15 Internat Telemeter Corp Subscription television with scrambled transmission and marquee and barker
US3261911A (en) * 1959-09-03 1966-07-19 Itt Transmission system for imprinted intelligence
US3538242A (en) * 1966-01-03 1970-11-03 Zenith Radio Corp Subscriber communication system
FR1492916A (fr) * 1966-05-09 1967-08-25 Procédé de codage et de décodage de signaux de télécommunication et notamment des signaux de télévision, et montage de mise en oeuvre
US3735027A (en) * 1970-11-02 1973-05-22 Skiatron Electronics Televisio Decoding scrambled television

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4509210A (en) * 1981-11-30 1985-04-02 Rca Corporation Television receiver adaptable for descrambler module
US4802214A (en) * 1982-04-23 1989-01-31 Eagle Comtronics, Inc. Method and apparatus for identifying and rendering operative particular descramblers in a television signal scrambling system
US4567516A (en) * 1982-08-30 1986-01-28 Blonder-Tongue Laboratories, Inc. Special program decoding of scrambled subscription television transmissions
US4663664A (en) * 1983-10-31 1987-05-05 R. F. Monolithics, Inc. Electronic ticket method and apparatus for television signal scrambling and descrambling

Also Published As

Publication number Publication date
FR2411527B1 (fr) 1982-10-22

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse