FR2701624B1 - Anti-jamming device for self-synchronizing scramblers for the serial transmission of digital video signals. - Google Patents

Anti-jamming device for self-synchronizing scramblers for the serial transmission of digital video signals.

Info

Publication number
FR2701624B1
FR2701624B1 FR9301713A FR9301713A FR2701624B1 FR 2701624 B1 FR2701624 B1 FR 2701624B1 FR 9301713 A FR9301713 A FR 9301713A FR 9301713 A FR9301713 A FR 9301713A FR 2701624 B1 FR2701624 B1 FR 2701624B1
Authority
FR
France
Prior art keywords
self
digital video
video signals
serial transmission
jamming device
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
FR9301713A
Other languages
French (fr)
Other versions
FR2701624A1 (en
Inventor
Erwan Froc
Henri Fourdeux
Laurent Thebault
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.)
Thales SA
Original Assignee
Thomson CSF 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 Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR9301713A priority Critical patent/FR2701624B1/en
Publication of FR2701624A1 publication Critical patent/FR2701624A1/en
Application granted granted Critical
Publication of FR2701624B1 publication Critical patent/FR2701624B1/en
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)
  • Synchronisation In Digital Transmission Systems (AREA)
FR9301713A 1993-02-16 1993-02-16 Anti-jamming device for self-synchronizing scramblers for the serial transmission of digital video signals. Expired - Fee Related FR2701624B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9301713A FR2701624B1 (en) 1993-02-16 1993-02-16 Anti-jamming device for self-synchronizing scramblers for the serial transmission of digital video signals.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9301713A FR2701624B1 (en) 1993-02-16 1993-02-16 Anti-jamming device for self-synchronizing scramblers for the serial transmission of digital video signals.

Publications (2)

Publication Number Publication Date
FR2701624A1 FR2701624A1 (en) 1994-08-19
FR2701624B1 true FR2701624B1 (en) 1995-04-07

Family

ID=9444094

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9301713A Expired - Fee Related FR2701624B1 (en) 1993-02-16 1993-02-16 Anti-jamming device for self-synchronizing scramblers for the serial transmission of digital video signals.

Country Status (1)

Country Link
FR (1) FR2701624B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5796774A (en) * 1995-02-20 1998-08-18 Canon Kabushiki Kaisha Spread spectrum communication apparatus with conversion of input patterns to uniform spectral patterns

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4578703A (en) * 1981-08-05 1986-03-25 Clarion Co., Ltd. Subscription television system
FR2631193B1 (en) * 1988-05-06 1994-09-16 Europ Rech Electr Lab METHOD FOR SCRAMBLING AND SCALING-UP OF COMPOSITE VIDEO SIGNALS, AND IMPLEMENTING DEVICE

Also Published As

Publication number Publication date
FR2701624A1 (en) 1994-08-19

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Legal Events

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

Effective date: 20081031