JPS49119502A - - Google Patents

Info

Publication number
JPS49119502A
JPS49119502A JP49017525A JP1752574A JPS49119502A JP S49119502 A JPS49119502 A JP S49119502A JP 49017525 A JP49017525 A JP 49017525A JP 1752574 A JP1752574 A JP 1752574A JP S49119502 A JPS49119502 A JP S49119502A
Authority
JP
Japan
Legal status (The legal status 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 status listed.)
Pending
Application number
JP49017525A
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 filed Critical
Publication of JPS49119502A publication Critical patent/JPS49119502A/ja
Pending legal-status Critical Current

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
JP49017525A 1973-02-13 1974-02-13 Pending JPS49119502A (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH202673A CH574692A5 (ja) 1973-02-13 1973-02-13

Publications (1)

Publication Number Publication Date
JPS49119502A true JPS49119502A (ja) 1974-11-15

Family

ID=4224178

Family Applications (1)

Application Number Title Priority Date Filing Date
JP49017525A Pending JPS49119502A (ja) 1973-02-13 1974-02-13

Country Status (11)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS538002A (en) * 1976-06-02 1978-01-25 Mitsubishi Electric Corp Privacy telephone set

Families Citing this family (1)

* 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

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 (ja) * 1971-03-11 1972-10-27 Snecma

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS538002A (en) * 1976-06-02 1978-01-25 Mitsubishi Electric Corp Privacy telephone set
JPS5824984B2 (ja) * 1976-06-02 1983-05-24 三菱電機株式会社 秘話装置

Also Published As

Publication number Publication date
GB1465393A (en) 1977-02-23
NO140401C (no) 1979-08-22
ZA74916B (en) 1974-12-24
NL7401441A (ja) 1974-08-15
DE2318489B2 (de) 1979-05-03
IT1019573B (it) 1977-11-30
SE392556B (sv) 1977-03-28
FR2217875A1 (ja) 1974-09-06
NO140401B (no) 1979-05-14
DE2318489A1 (de) 1974-08-15
NO740416L (no) 1974-08-14
CH574692A5 (ja) 1976-04-15
CA1003137A (en) 1977-01-04
FR2217875B1 (ja) 1978-05-12
DE2318489C3 (de) 1982-12-23

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