NO740416L - Fremgangsmåte til og anlegg for utydeliggjøring, sending, mottakning og tydeliggjøring av taleinformasjon. - Google Patents

Fremgangsmåte til og anlegg for utydeliggjøring, sending, mottakning og tydeliggjøring av taleinformasjon.

Info

Publication number
NO740416L
NO740416L NO740416A NO740416A NO740416L NO 740416 L NO740416 L NO 740416L NO 740416 A NO740416 A NO 740416A NO 740416 A NO740416 A NO 740416A NO 740416 L NO740416 L NO 740416L
Authority
NO
Norway
Prior art keywords
clarification
facilities
reception
procedure
transmission
Prior art date
Application number
NO740416A
Other languages
English (en)
Other versions
NO140401C (no
NO140401B (no
Inventor
Eduard Brunner
Pierre Schmid
Walter Stofer
Original Assignee
Gretag 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 Gretag Ag filed Critical Gretag Ag
Publication of NO740416L publication Critical patent/NO740416L/no
Publication of NO140401B publication Critical patent/NO140401B/no
Publication of NO140401C publication Critical patent/NO140401C/no

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)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
NO740416A 1973-02-13 1974-02-07 Fremgangsmaate til og anlegg for utydeliggjoering, sending, mottakning og tydeliggjoering av taleinformasjon NO140401C (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH202673A CH574692A5 (no) 1973-02-13 1973-02-13

Publications (3)

Publication Number Publication Date
NO740416L true NO740416L (no) 1974-08-14
NO140401B NO140401B (no) 1979-05-14
NO140401C NO140401C (no) 1979-08-22

Family

ID=4224178

Family Applications (1)

Application Number Title Priority Date Filing Date
NO740416A NO140401C (no) 1973-02-13 1974-02-07 Fremgangsmaate til og anlegg for utydeliggjoering, sending, mottakning og tydeliggjoering av taleinformasjon

Country Status (11)

Country Link
JP (1) JPS49119502A (no)
CA (1) CA1003137A (no)
CH (1) CH574692A5 (no)
DE (1) DE2318489C3 (no)
FR (1) FR2217875B1 (no)
GB (1) GB1465393A (no)
IT (1) IT1019573B (no)
NL (1) NL7401441A (no)
NO (1) NO140401C (no)
SE (1) SE392556B (no)
ZA (1) ZA74916B (no)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2318247C3 (de) * 1973-04-11 1981-03-26 Siemens AG, 1000 Berlin und 8000 München Einrichtung zur verschleierten Übertragung von Sprachsignalen
JPS5824984B2 (ja) * 1976-06-02 1983-05-24 三菱電機株式会社 秘話装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1620656A (en) * 1924-12-01 1927-03-15 Western Electric Co Carrier-wave signaling system
US3201517A (en) * 1944-04-12 1965-08-17 Bell Telephone Labor Inc Privacy communication system
FR977153A (fr) * 1948-10-27 1951-03-28 Radio Electr Soc Fr Système de communication téléphonique à secret
FR1169671A (fr) * 1957-03-08 1959-01-05 Thomson Houston Comp Francaise Perfectionnements aux systèmes de communications téléphoniques
CH361597A (de) * 1958-08-23 1962-04-30 Patelhold Patentverwertung Verfahren zur Verschleierung von Nachrichtensignalen
US3225142A (en) * 1961-12-18 1965-12-21 Bell Telephone Labor Inc Privacy system
FR95619E (fr) * 1966-05-05 1971-03-26 It Telecommunicazioni Siemens Systeme de transmission de signaux téléphoniques a allocation de temps.
CH499932A (de) * 1968-02-12 1970-11-30 Patelhold Patentverwertung Synchronisierverfahren für programmgesteuerte Trägerumtastung
CH518658A (de) * 1970-07-07 1972-01-31 Patelhold Patentverwaltungs Un Verfahren zur verschlüsselten Nachrichtenübermittlung durch zeitliche Vertauschung von Informationselementen
FR2129013A5 (no) * 1971-03-11 1972-10-27 Snecma

Also Published As

Publication number Publication date
NO140401C (no) 1979-08-22
GB1465393A (en) 1977-02-23
IT1019573B (it) 1977-11-30
FR2217875B1 (no) 1978-05-12
FR2217875A1 (no) 1974-09-06
CH574692A5 (no) 1976-04-15
NL7401441A (no) 1974-08-15
DE2318489C3 (de) 1982-12-23
DE2318489A1 (de) 1974-08-15
JPS49119502A (no) 1974-11-15
CA1003137A (en) 1977-01-04
ZA74916B (en) 1974-12-24
SE392556B (sv) 1977-03-28
DE2318489B2 (de) 1979-05-03
NO140401B (no) 1979-05-14

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