CH246844A - Method and device for obfuscating electrically transmitted voice messages. - Google Patents

Method and device for obfuscating electrically transmitted voice messages.

Info

Publication number
CH246844A
CH246844A CH246844DA CH246844A CH 246844 A CH246844 A CH 246844A CH 246844D A CH246844D A CH 246844DA CH 246844 A CH246844 A CH 246844A
Authority
CH
Switzerland
Prior art keywords
obfuscating
voice messages
transmitted voice
electrically transmitted
electrically
Prior art date
Application number
Other languages
German (de)
Inventor
Patentverwertungs-Elektro-Hold
Original Assignee
Patelhold Patentverwertung
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 Patentverwertung filed Critical Patelhold Patentverwertung
Publication of CH246844A publication Critical patent/CH246844A/en

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)
  • Mobile Radio Communication Systems (AREA)
CH246844D 1945-09-15 1945-09-15 Method and device for obfuscating electrically transmitted voice messages. CH246844A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH2510338X 1945-09-15

Publications (1)

Publication Number Publication Date
CH246844A true CH246844A (en) 1947-01-31

Family

ID=4569747

Family Applications (1)

Application Number Title Priority Date Filing Date
CH246844D CH246844A (en) 1945-09-15 1945-09-15 Method and device for obfuscating electrically transmitted voice messages.

Country Status (2)

Country Link
US (1) US2510338A (en)
CH (1) CH246844A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1196713B (en) * 1962-08-30 1965-07-15 Deutsche Bundespost Procedure for voice encryption
DE2523828C2 (en) * 1975-05-30 1982-08-12 TE KA DE Felten & Guilleaume Fernmeldeanlagen GmbH, 8500 Nürnberg Method for obfuscating speech signals with the aid of orthogonal matrices

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4184117A (en) * 1956-04-16 1980-01-15 The United States Of America As Represented By The Secretary Of The Army Communication security method and system
US4179657A (en) * 1958-08-28 1979-12-18 The United States Of America As Represented By The Secretary Of The Air Force Anti-jamming communication system
CH580893A5 (en) * 1973-07-02 1976-10-15 Gretag Ag
US4058677A (en) * 1974-04-26 1977-11-15 Lear Siegler, Inc. Sound scrambling equipment
US4156107A (en) * 1978-02-03 1979-05-22 Bell Telephone Laboratories, Incorporated Speech signal scrambler
US4591673A (en) * 1982-05-10 1986-05-27 Lee Lin Shan Frequency or time domain speech scrambling technique and system which does not require any frame synchronization
US5949878A (en) * 1996-06-28 1999-09-07 Transcrypt International, Inc. Method and apparatus for providing voice privacy in electronic communication systems

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL27077C (en) * 1927-12-15
US2301455A (en) * 1939-10-27 1942-11-10 Wireless Res Corp Apparatus and method for communication
US2402059A (en) * 1942-04-29 1946-06-11 Hazeltine Research Inc Secrecy communication system
NL63459C (en) * 1943-04-05
CH238062A (en) * 1943-06-23 1945-06-15 Patelhold Patentverwertung Method and device for obscuring spoken messages.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1196713B (en) * 1962-08-30 1965-07-15 Deutsche Bundespost Procedure for voice encryption
DE2523828C2 (en) * 1975-05-30 1982-08-12 TE KA DE Felten & Guilleaume Fernmeldeanlagen GmbH, 8500 Nürnberg Method for obfuscating speech signals with the aid of orthogonal matrices

Also Published As

Publication number Publication date
US2510338A (en) 1950-06-06

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