CH519831A - Anlage zur verschlüsselten Übertragung von Tonfrequenz-Informationssignalen - Google Patents

Anlage zur verschlüsselten Übertragung von Tonfrequenz-Informationssignalen

Info

Publication number: CH519831A
Authority: CH; Switzerland
Prior art keywords: audio frequency; frequency information; information signals; encrypted transmission; encrypted
Prior art date: 1969-05-14

Application number

CH695470A

Other languages

English (en)

Inventor

Ronald Lundin Seth Johan

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.)

1969-05-14

Filing date

1970-05-11

Publication date

1972-02-29

1969-05-14 Priority claimed from SE06921/69A external-priority patent/SE354394B/xx

1969-05-14 Priority claimed from SE06920/69A external-priority patent/SE353633B/xx

1970-05-11 Application filed by Philips Nv filed Critical Philips Nv

1972-02-29 Publication of CH519831A publication Critical patent/CH519831A/de

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)
Transmitters (AREA)
Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
Synchronisation In Digital Transmission Systems (AREA)

CH695470A 1969-05-14 1970-05-11 Anlage zur verschlüsselten Übertragung von Tonfrequenz-Informationssignalen CH519831A (de)

Applications Claiming Priority (2)

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

Publications (1)

Publication Number	Publication Date
CH519831A true CH519831A (de)	1972-02-29

Family

ID=26654737

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CH695470A CH519831A (de)	1969-05-14	1970-05-11	Anlage zur verschlüsselten Übertragung von Tonfrequenz-Informationssignalen

Country Status (10)

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

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
NL6612935A (de) *	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 (de) *	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 (de) *	1966-09-14	1968-03-15

1970
- 1970-05-05 US US34728A patent/US3696207A/en not_active Expired - Lifetime
- 1970-05-05 DE DE19702021941 patent/DE2021941A1/de active Pending
- 1970-05-11 CH CH695470A patent/CH519831A/de not_active IP Right Cessation
- 1970-05-11 AT AT420770A patent/AT312691B/de not_active IP Right Cessation
- 1970-05-11 GB GB1257584D patent/GB1257584A/en not_active Expired
- 1970-05-12 BE BE750302D patent/BE750302A/xx unknown
- 1970-05-12 NL NL7006806A patent/NL7006806A/xx unknown
- 1970-05-14 FR FR7017602A patent/FR2047764A5/fr not_active Expired
- 1970-05-14 JP JP45040872A patent/JPS4932601B1/ja active Pending
- 1970-05-14 CA CA082740A patent/CA919321A/en not_active Expired

Also Published As

Publication number	Publication date
DE2021941A1 (de)	1972-01-13
US3696207A (en)	1972-10-03
CA919321A (en)	1973-01-16
AT312691B (de)	1974-01-10
JPS4932601B1 (de)	1974-08-31
FR2047764A5 (de)	1971-03-12
BE750302A (fr)	1970-11-12
GB1257584A (de)	1971-12-22
NL7006806A (de)	1970-11-17

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Legal Events

Date	Code	Title	Description
1976-12-15	PL	Patent ceased