AT312691B - Übertragungssystem zur verschlüsselten Übertragung von Tonfrequenz-Informationssignalen, z.B. Sprachsignalen - Google Patents
Übertragungssystem zur verschlüsselten Übertragung von Tonfrequenz-Informationssignalen, z.B. SprachsignalenInfo
- Publication number
- AT312691B AT312691B AT420770A AT420770A AT312691B AT 312691 B AT312691 B AT 312691B AT 420770 A AT420770 A AT 420770A AT 420770 A AT420770 A AT 420770A AT 312691 B AT312691 B AT 312691B
- Authority
- AT
- Austria
- Prior art keywords
- signals
- transmission
- audio frequency
- frequency information
- transmission system
- Prior art date
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)
- Transmitters (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
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 |
---|---|
AT312691B true AT312691B (de) | 1974-01-10 |
Family
ID=26654737
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT420770A AT312691B (de) | 1969-05-14 | 1970-05-11 | Übertragungssystem zur verschlüsselten Übertragung von Tonfrequenz-Informationssignalen, z.B. Sprachsignalen |
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)
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)
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 GB GB1257584D patent/GB1257584A/en not_active Expired
- 1970-05-11 AT AT420770A patent/AT312691B/de not_active IP Right Cessation
- 1970-05-12 NL NL7006806A patent/NL7006806A/xx unknown
- 1970-05-12 BE BE750302D patent/BE750302A/xx unknown
- 1970-05-14 CA CA082740A patent/CA919321A/en not_active Expired
- 1970-05-14 FR FR7017602A patent/FR2047764A5/fr not_active Expired
- 1970-05-14 JP JP45040872A patent/JPS4932601B1/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
US3696207A (en) | 1972-10-03 |
JPS4932601B1 (de) | 1974-08-31 |
NL7006806A (de) | 1970-11-17 |
GB1257584A (de) | 1971-12-22 |
DE2021941A1 (de) | 1972-01-13 |
CA919321A (en) | 1973-01-16 |
CH519831A (de) | 1972-02-29 |
FR2047764A5 (de) | 1971-03-12 |
BE750302A (fr) | 1970-11-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ELJ | Ceased due to non-payment of the annual fee |