BE750302A - Dispositif de transmission d'informations a l'aide de signaux aaudio-frequence brouilles - Google Patents

Dispositif de transmission d'informations a l'aide de signaux aaudio-frequence brouilles

Info

Publication number
BE750302A
BE750302A BE750302DA BE750302A BE 750302 A BE750302 A BE 750302A BE 750302D A BE750302D A BE 750302DA BE 750302 A BE750302 A BE 750302A
Authority
BE
Belgium
Prior art keywords
jammed
audio
transmission device
information transmission
frequency signals
Prior art date
Application number
Other languages
English (en)
French (fr)
Inventor
Svenska A B Philips
Original Assignee
Philips Nv
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
Priority claimed from SE06920/69A external-priority patent/SE353633B/xx
Priority claimed from SE06921/69A external-priority patent/SE354394B/xx
Application filed by Philips Nv filed Critical Philips Nv
Publication of BE750302A publication Critical patent/BE750302A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • H04K1/003—Secret communication by varying carrier frequency at or within predetermined or random intervals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Transmitters (AREA)
BE750302D 1969-05-14 1970-05-12 Dispositif de transmission d'informations a l'aide de signaux aaudio-frequence brouilles BE750302A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE06920/69A SE353633B (enrdf_load_stackoverflow) 1969-05-14 1969-05-14
SE06921/69A SE354394B (enrdf_load_stackoverflow) 1969-05-14 1969-05-14

Publications (1)

Publication Number Publication Date
BE750302A true BE750302A (fr) 1970-11-12

Family

ID=26654737

Family Applications (1)

Application Number Title Priority Date Filing Date
BE750302D BE750302A (fr) 1969-05-14 1970-05-12 Dispositif de transmission d'informations a l'aide de signaux aaudio-frequence brouilles

Country Status (10)

Country Link
US (1) US3696207A (enrdf_load_stackoverflow)
JP (1) JPS4932601B1 (enrdf_load_stackoverflow)
AT (1) AT312691B (enrdf_load_stackoverflow)
BE (1) BE750302A (enrdf_load_stackoverflow)
CA (1) CA919321A (enrdf_load_stackoverflow)
CH (1) CH519831A (enrdf_load_stackoverflow)
DE (1) DE2021941A1 (enrdf_load_stackoverflow)
FR (1) FR2047764A5 (enrdf_load_stackoverflow)
GB (1) GB1257584A (enrdf_load_stackoverflow)
NL (1) NL7006806A (enrdf_load_stackoverflow)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6612935A (enrdf_load_stackoverflow) * 1966-09-14 1968-03-15
US3921151A (en) * 1971-06-21 1975-11-18 Patelhold Patentwerwertungs & Apparatus for enciphering transmitted data by interchanging signal elements of the transmitted data without overlapping or omitting any elements within the transmitted signal train
US3808536A (en) * 1972-04-12 1974-04-30 Gen Electric Co Ltd Communication scrambler system
US3886313A (en) * 1972-09-29 1975-05-27 Datotek Voice security method and system
US3893031A (en) * 1972-11-08 1975-07-01 Boeing Co Synchronization system for voice privacy unit
US3909534A (en) * 1973-09-07 1975-09-30 Boeing Co Voice privacy unit for intercommunication systems
US4058677A (en) * 1974-04-26 1977-11-15 Lear Siegler, Inc. Sound scrambling equipment
CH607506A5 (enrdf_load_stackoverflow) * 1976-06-01 1978-12-29 Europ Handelsges Anst
US4074079A (en) * 1976-06-02 1978-02-14 Bell Telephone Laboratories, Incorporated Coin telephone antifraud system
US4133977A (en) * 1977-02-25 1979-01-09 Lear Siegler, Inc. Voice scrambler using syllabic masking
DE2737576C1 (de) * 1977-08-22 1986-01-09 Siemens AG, 1000 Berlin und 8000 München Militaerisches Radar- oder Funk-Nachrichtenuebertragungssystem
US4228321A (en) * 1978-05-16 1980-10-14 Bell Telephone Laboratories, Incorporated Privacy transmission system with remote key control
US4268720A (en) * 1979-05-25 1981-05-19 Gte Laboratories Incorporated Scrambler speech transmission and synchronization system
US4790009A (en) * 1984-10-29 1988-12-06 Victor Company Of Japan, Ltd. Scrambler system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2401403A (en) * 1943-12-15 1946-06-04 Rca Corp Secret signaling
US3180927A (en) * 1961-09-07 1965-04-27 Itt Cryptosecure transmission system
NL6612935A (enrdf_load_stackoverflow) * 1966-09-14 1968-03-15

Also Published As

Publication number Publication date
CA919321A (en) 1973-01-16
DE2021941A1 (de) 1972-01-13
FR2047764A5 (enrdf_load_stackoverflow) 1971-03-12
AT312691B (de) 1974-01-10
US3696207A (en) 1972-10-03
GB1257584A (enrdf_load_stackoverflow) 1971-12-22
JPS4932601B1 (enrdf_load_stackoverflow) 1974-08-31
CH519831A (de) 1972-02-29
NL7006806A (enrdf_load_stackoverflow) 1970-11-17

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