BE477658A - - Google Patents

Info

Publication number
BE477658A
BE477658A BE477658DA BE477658A BE 477658 A BE477658 A BE 477658A BE 477658D A BE477658D A BE 477658DA BE 477658 A BE477658 A BE 477658A
Authority
BE
Belgium
Application number
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.)
Publication of BE477658A publication Critical patent/BE477658A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • H04K1/02—Secret communication by adding a second signal to make the desired signal unintelligible

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Radio Relay Systems (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
BE477658D 1941-07-09 BE477658A (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8643/41A GB580167A (en) 1941-07-09 1941-07-09 Improvements in or relating to secret transmission systems

Publications (1)

Publication Number Publication Date
BE477658A true BE477658A (xx)

Family

ID=9856430

Family Applications (1)

Application Number Title Priority Date Filing Date
BE477658D BE477658A (xx) 1941-07-09

Country Status (5)

Country Link
US (1) US2406841A (xx)
BE (1) BE477658A (xx)
ES (1) ES176097A1 (xx)
FR (1) FR932703A (xx)
GB (1) GB580167A (xx)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2466959A (en) * 1944-09-30 1949-04-12 Philco Corp Radio receiver noise discriminating circuit
US2953643A (en) * 1945-05-10 1960-09-20 Bell Telephone Labor Inc Inverted speech privacy using irregular inverting wave form
US2521690A (en) * 1945-08-14 1950-09-12 Standard Telephones Cables Ltd Secrecy preserving signaling system
US2556677A (en) * 1946-05-10 1951-06-12 Bell Telephone Labor Inc Secret communication system
US2510046A (en) * 1947-04-18 1950-05-30 Zenith Radio Corp Radio-wire signaling system
US2660666A (en) * 1950-01-05 1953-11-24 Westinghouse Electric Corp Secrecy transmission system
US4176316A (en) * 1953-03-30 1979-11-27 International Telephone & Telegraph Corp. Secure single sideband communication system using modulated noise subcarrier
USRE34004E (en) * 1953-03-30 1992-07-21 Itt Corporation Secure single sideband communication system using modulated noise subcarrier
US3225142A (en) * 1961-12-18 1965-12-21 Bell Telephone Labor Inc Privacy system
US4361729A (en) * 1968-01-24 1982-11-30 American Standard Inc. Narrowband analog message privacy system
US4805216A (en) * 1987-01-08 1989-02-14 Compfax Corporation Method and apparatus for continuously acknowledged link encrypting

Also Published As

Publication number Publication date
ES176097A1 (es) 1947-01-16
FR932703A (fr) 1948-03-31
US2406841A (en) 1946-09-03
GB580167A (en) 1946-08-29

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