CH238062A - Method and device for obscuring spoken messages. - Google Patents

Method and device for obscuring spoken messages.

Info

Publication number
CH238062A
CH238062A CH238062DA CH238062A CH 238062 A CH238062 A CH 238062A CH 238062D A CH238062D A CH 238062DA CH 238062 A CH238062 A CH 238062A
Authority
CH
Switzerland
Prior art keywords
obscuring
spoken messages
spoken
messages
obscuring spoken
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 CH238062A publication Critical patent/CH238062A/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)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Complex Calculations (AREA)
  • Collating Specific Patterns (AREA)
CH238062D 1943-06-23 1943-06-23 Method and device for obscuring spoken messages. CH238062A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
CH238062A true CH238062A (en) 1945-06-15

Family

ID=4521995

Family Applications (1)

Application Number Title Priority Date Filing Date
CH238062D CH238062A (en) 1943-06-23 1943-06-23 Method and device for obscuring 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
EP1782562A4 (en) * 2004-07-15 2011-09-14 Essex Corp 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
FR904316A (en) 1945-11-02
GB588825A (en) 1947-06-04

Similar Documents

Publication Publication Date Title
ES177949A1 (en) A METHOD OF CONCENTRATION, WITH YOUR CORRESPONDING APPARATUS
CH248047A (en) Process and device for shaping workpieces.
CH238926A (en) Method of obfuscating spoken messages.
CH229755A (en) Method and device for synchronizing alternating voltages.
CH238062A (en) Method and device for obscuring spoken messages.
FR917880A (en) Advanced perforating device
US2398046A (en) Indicating apparatus and method
CH246844A (en) Method and device for obfuscating electrically transmitted voice messages.
CH245611A (en) Method and device for charging melting furnaces.
CH243748A (en) Method and device for time modulation.
CH236555A (en) Briquette and method of making the same.
CH257582A (en) Method of making permanent waves and device for carrying out the method.
CH231150A (en) Process for obtaining toxiferin I and II.
CH294573A (en) Method and device for the electrical storage of signals.
CH269588A (en) Process for creating storage areas.
CH228346A (en) Procedure and device for the confidentiality of spoken messages.
CA410464A (en) Navigational method and apparatus
CA414373A (en) Navigation method and apparatus
CH250364A (en) Method and device for carrying out electrolytic reductions.
FR942753A (en) Telephone system
CH239964A (en) Method and device for reproducing color transparencies.
CA409720A (en) Perforating method and apparatus
CH225643A (en) Method and device for the production of separators for accumulators.
ES9346Y (en) Announcing apparatus.
CH238618A (en) Wheelset and method of making same