FR904316A - Method and device for scrambling spoken messages - Google Patents

Method and device for scrambling spoken messages

Info

Publication number
FR904316A
FR904316A FR904316DA FR904316A FR 904316 A FR904316 A FR 904316A FR 904316D A FR904316D A FR 904316DA FR 904316 A FR904316 A FR 904316A
Authority
FR
France
Prior art keywords
scrambling
spoken messages
spoken
messages
scrambling spoken
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
Application number
Other languages
French (fr)
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.)
Patelhold Patenverwertungs and Elektro-Holding AG
Original Assignee
Patelhold Patenverwertungs and Elektro-Holding AG
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 Patelhold Patenverwertungs and Elektro-Holding AG filed Critical Patelhold Patenverwertungs and Elektro-Holding AG
Application granted granted Critical
Publication of FR904316A publication Critical patent/FR904316A/en
Expired 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)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Complex Calculations (AREA)
  • Collating Specific Patterns (AREA)
FR904316D 1943-06-23 1944-05-17 Method and device for scrambling spoken messages Expired FR904316A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH588825X 1943-06-23

Publications (1)

Publication Number Publication Date
FR904316A true FR904316A (en) 1945-11-02

Family

ID=4521995

Family Applications (1)

Application Number Title Priority Date Filing Date
FR904316D Expired FR904316A (en) 1943-06-23 1944-05-17 Method and device for scrambling spoken messages

Country Status (4)

Country Link
US (1) US2411683A (en)
CH (1) CH238062A (en)
FR (1) FR904316A (en)
GB (1) GB588825A (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3979558A (en) * 1944-06-30 1976-09-07 Bell Telephone Laboratories, Incorporated Signaling system
CH246844A (en) * 1945-09-15 1947-01-31 Patelhold Patentverwertung Method and device for obfuscating electrically transmitted voice messages.
CH248975A (en) * 1946-02-04 1947-05-31 Patelhold Patentverwertung Process and device for disguising the individual calls in a multi-channel system.
US2923773A (en) * 1953-10-27 1960-02-02 Paul A Wagner Electronic system for handling information
US3024311A (en) * 1957-01-29 1962-03-06 Ampex Signal system
US3517313A (en) * 1964-04-08 1970-06-23 Joseph A Vasile Amplitude elimination and restoration system
US4020285A (en) * 1972-09-29 1977-04-26 Datotek, Inc. Voice security method and system
US3991271A (en) * 1972-09-29 1976-11-09 Datotek, Inc. Voice security method and system
US4195202A (en) * 1978-01-03 1980-03-25 Technical Communications Corporation Voice privacy system with amplitude masking
US4278840A (en) * 1979-03-23 1981-07-14 Datotek, Inc. Dynamic frequency and time voice encryption system and method
US4638357A (en) * 1984-01-20 1987-01-20 Home Box Office, Inc. Audio scrambler
US5101432A (en) * 1986-03-17 1992-03-31 Cardinal Encryption Systems Ltd. Signal encryption
JP2002261736A (en) * 2001-02-27 2002-09-13 Kepusutoramu:Kk Signal scrambling/descrambling method and apparatus and privacy call method using the same
CA2573981A1 (en) * 2004-07-15 2006-02-23 Essex Corporation A private and secure optical communication system using an optical tapped delay line

Also Published As

Publication number Publication date
US2411683A (en) 1946-11-26
CH238062A (en) 1945-06-15
GB588825A (en) 1947-06-04

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