FR2705516B1 - Method and system for scrambling-descrambling a broadcast radio program or an intercom network. - Google Patents

Method and system for scrambling-descrambling a broadcast radio program or an intercom network.

Info

Publication number
FR2705516B1
FR2705516B1 FR9305772A FR9305772A FR2705516B1 FR 2705516 B1 FR2705516 B1 FR 2705516B1 FR 9305772 A FR9305772 A FR 9305772A FR 9305772 A FR9305772 A FR 9305772A FR 2705516 B1 FR2705516 B1 FR 2705516B1
Authority
FR
France
Prior art keywords
descrambling
scrambling
broadcast radio
radio program
intercom network
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
FR9305772A
Other languages
French (fr)
Other versions
FR2705516A1 (en
Inventor
Lauze Florence
Brun Martine
Vienot Daniel
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.)
Telediffusion de France ets Public de Diffusion
Original Assignee
Telediffusion de France ets Public de Diffusion
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 Telediffusion de France ets Public de Diffusion filed Critical Telediffusion de France ets Public de Diffusion
Priority to FR9305772A priority Critical patent/FR2705516B1/en
Publication of FR2705516A1 publication Critical patent/FR2705516A1/en
Application granted granted Critical
Publication of FR2705516B1 publication Critical patent/FR2705516B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • H04K1/04—Secret communication by frequency scrambling, i.e. by transposing or inverting parts of the frequency band or by inverting the whole band

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
FR9305772A 1993-05-13 1993-05-13 Method and system for scrambling-descrambling a broadcast radio program or an intercom network. Expired - Lifetime FR2705516B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9305772A FR2705516B1 (en) 1993-05-13 1993-05-13 Method and system for scrambling-descrambling a broadcast radio program or an intercom network.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9305772A FR2705516B1 (en) 1993-05-13 1993-05-13 Method and system for scrambling-descrambling a broadcast radio program or an intercom network.

Publications (2)

Publication Number Publication Date
FR2705516A1 FR2705516A1 (en) 1994-11-25
FR2705516B1 true FR2705516B1 (en) 1995-07-28

Family

ID=9447087

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9305772A Expired - Lifetime FR2705516B1 (en) 1993-05-13 1993-05-13 Method and system for scrambling-descrambling a broadcast radio program or an intercom network.

Country Status (1)

Country Link
FR (1) FR2705516B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU4498200A (en) * 1999-04-30 2000-11-17 Amik, Inc. System of providing secure transmission for facsimile data modem signals

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0131919A3 (en) * 1983-07-18 1985-03-06 Motorola, Inc. Voice privacy system
FR2579396A1 (en) * 1985-03-22 1986-09-26 Loire Electronique Low-frequency information coding/decoding device

Also Published As

Publication number Publication date
FR2705516A1 (en) 1994-11-25

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