CH580893A5 - - Google Patents
Info
- Publication number
- CH580893A5 CH580893A5 CH962773A CH962773A CH580893A5 CH 580893 A5 CH580893 A5 CH 580893A5 CH 962773 A CH962773 A CH 962773A CH 962773 A CH962773 A CH 962773A CH 580893 A5 CH580893 A5 CH 580893A5
- Authority
- CH
- Switzerland
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)
- Mobile Radio Communication Systems (AREA)
- Telephonic Communication Services (AREA)
- Telephone Function (AREA)
- Transmitters (AREA)
Priority Applications (12)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH962773A CH580893A5 (xx) | 1973-07-02 | 1973-07-02 | |
DE2335513A DE2335513C2 (de) | 1973-07-02 | 1973-07-12 | Verfahren und Anlage zum verschleierten Übertragen einer gesprochenen Information über einen Telephoniekanal |
ZA00744128A ZA744128B (en) | 1973-07-02 | 1974-06-26 | Method and installation for masked speech transmission over a telephone channel |
CA203,634A CA1000879A (en) | 1973-07-02 | 1974-06-28 | Method and installation for masked speech transmission over a telephone channel |
NO742389A NO139907C (no) | 1973-07-02 | 1974-07-01 | Fremgangsmaate og anlegg til hemmeliggjort overfoering av taleinformasjon paa en telefonkanal |
JP49075082A JPS5039401A (xx) | 1973-07-02 | 1974-07-02 | |
IT51859/74A IT1018711B (it) | 1973-07-02 | 1974-07-02 | Procedimento ed impianto di trasmis sione mascherata di un informazione parlata su un canale telefonico |
FR7423005A FR2236321B1 (xx) | 1973-07-02 | 1974-07-02 | |
NL7408930A NL7408930A (nl) | 1973-07-02 | 1974-07-02 | Werkwijze en inrichting voor het versluierd overdragen van een gesproken informatie over een telefoniekanaal. |
GB2936074A GB1434706A (en) | 1973-07-02 | 1974-07-02 | Mehtod and installation for masked speech transmission over a telephone channel |
SE7408654A SE401886B (sv) | 1973-07-02 | 1974-07-10 | Sett och anleggning for maskerad overforing av talad information via en telefonkanal |
US05/688,347 US4188506A (en) | 1973-07-02 | 1976-05-20 | Method and installation for masked speech transmission over a telephone channel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH962773A CH580893A5 (xx) | 1973-07-02 | 1973-07-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH580893A5 true CH580893A5 (xx) | 1976-10-15 |
Family
ID=4353965
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH962773A CH580893A5 (xx) | 1973-07-02 | 1973-07-02 |
Country Status (12)
Country | Link |
---|---|
US (1) | US4188506A (xx) |
JP (1) | JPS5039401A (xx) |
CA (1) | CA1000879A (xx) |
CH (1) | CH580893A5 (xx) |
DE (1) | DE2335513C2 (xx) |
FR (1) | FR2236321B1 (xx) |
GB (1) | GB1434706A (xx) |
IT (1) | IT1018711B (xx) |
NL (1) | NL7408930A (xx) |
NO (1) | NO139907C (xx) |
SE (1) | SE401886B (xx) |
ZA (1) | ZA744128B (xx) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4443660A (en) * | 1980-02-04 | 1984-04-17 | Rockwell International Corporation | System and method for encrypting a voice signal |
JPS57113655A (en) * | 1980-12-30 | 1982-07-15 | Oikawa Hisao | Signal encryption device |
DE3120357A1 (de) * | 1981-05-22 | 1982-12-09 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Verfahren zur vertauschung von n teilbaendern |
US4433211A (en) * | 1981-11-04 | 1984-02-21 | Technical Communications Corporation | Privacy communication system employing time/frequency transformation |
JPS5885844U (ja) * | 1981-12-04 | 1983-06-10 | オムロン株式会社 | 通信回路 |
FR2520955B1 (fr) * | 1982-01-29 | 1987-11-13 | Radiotechnique | Systeme electronique de transmission secrete de signaux audio |
US4591673A (en) * | 1982-05-10 | 1986-05-27 | Lee Lin Shan | Frequency or time domain speech scrambling technique and system which does not require any frame synchronization |
SE431385B (sv) * | 1982-06-11 | 1984-01-30 | Ericsson Telefon Ab L M | Sett att forvrenga en talsignal, sett att aterstella den forvrengda talsignalen, samt anordning for att forvrenga respektive aterstella talsignalen |
FR2606237B1 (fr) * | 1986-10-31 | 1988-12-09 | Trt Telecom Radio Electr | Dispositif de cryptophonie analogique a permutations dynamiques de bande |
US4972474A (en) * | 1989-05-01 | 1990-11-20 | Cylink Corporation | Integer encryptor |
JPH04101527A (ja) * | 1990-08-20 | 1992-04-03 | Mitsubishi Electric Corp | 秘話通信装置 |
ES2078178B1 (es) * | 1993-12-31 | 1998-02-01 | Alcatel Standard Electrica | Dispositivo de cifrado de datos. |
DE19757296C2 (de) * | 1997-12-22 | 2002-12-05 | Rohde & Schwarz | Verfahren zum Bestimmen der Übertragungsfunktion eines Meßgerätes |
US6836804B1 (en) * | 2000-10-30 | 2004-12-28 | Cisco Technology, Inc. | VoIP network |
US20020097861A1 (en) * | 2001-01-25 | 2002-07-25 | Acoustic Technologies, Inc. | Narrow band shadow encoder |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3124748A (en) * | 1964-03-10 | Secret signalling systems | ||
US1542566A (en) * | 1923-06-30 | 1925-06-16 | Western Electric Co | Secret signaling |
US1819614A (en) * | 1929-03-30 | 1931-08-18 | Bell Telephone Labor Inc | Wave transmission system |
CH218529A (de) * | 1941-05-10 | 1942-12-15 | Patelhold Patentverwertung | Verfahren und Einrichtung zur Geheimhaltung von Nachrichten. |
CH225461A (de) * | 1941-12-08 | 1943-01-31 | Patelhold Patentverwertung | Verfahren und Einrichtung zur Geheimhaltung von Nachrichten. |
CH227464A (de) * | 1942-01-29 | 1943-06-15 | Patelhold Patentverwertung | Verfahren zur Übermittlung von Nachrichten, die mit Hilfe von Steuersignalen verschleiert werden. |
NL63459C (xx) * | 1943-04-05 | |||
US3201517A (en) * | 1944-04-12 | 1965-08-17 | Bell Telephone Labor Inc | Privacy communication system |
CH246844A (de) * | 1945-09-15 | 1947-01-31 | Patelhold Patentverwertung | Verfahren und Einrichtung zur Verschleierung von elektrisch übermittelten Sprachnachrichten. |
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 |
US3255142A (en) * | 1958-05-26 | 1966-06-07 | American Cyanamid Co | Process for the segmentation of polymer gell |
CH361597A (de) * | 1958-08-23 | 1962-04-30 | Patelhold Patentverwertung | Verfahren zur Verschleierung von Nachrichtensignalen |
CH518658A (de) * | 1970-07-07 | 1972-01-31 | Patelhold Patentverwaltungs Un | Verfahren zur verschlüsselten Nachrichtenübermittlung durch zeitliche Vertauschung von Informationselementen |
-
1973
- 1973-07-02 CH CH962773A patent/CH580893A5/xx not_active IP Right Cessation
- 1973-07-12 DE DE2335513A patent/DE2335513C2/de not_active Expired
-
1974
- 1974-06-26 ZA ZA00744128A patent/ZA744128B/xx unknown
- 1974-06-28 CA CA203,634A patent/CA1000879A/en not_active Expired
- 1974-07-01 NO NO742389A patent/NO139907C/no unknown
- 1974-07-02 JP JP49075082A patent/JPS5039401A/ja active Pending
- 1974-07-02 NL NL7408930A patent/NL7408930A/xx not_active Application Discontinuation
- 1974-07-02 IT IT51859/74A patent/IT1018711B/it active
- 1974-07-02 GB GB2936074A patent/GB1434706A/en not_active Expired
- 1974-07-02 FR FR7423005A patent/FR2236321B1/fr not_active Expired
- 1974-07-10 SE SE7408654A patent/SE401886B/xx unknown
-
1976
- 1976-05-20 US US05/688,347 patent/US4188506A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
SE7408654L (xx) | 1975-01-03 |
NO139907C (no) | 1979-06-06 |
DE2335513A1 (de) | 1975-01-23 |
JPS5039401A (xx) | 1975-04-11 |
CA1000879A (en) | 1976-11-30 |
NL7408930A (nl) | 1975-01-06 |
FR2236321A1 (xx) | 1975-01-31 |
GB1434706A (en) | 1976-05-05 |
FR2236321B1 (xx) | 1977-10-07 |
NO742389L (xx) | 1975-01-27 |
NO139907B (no) | 1979-02-19 |
DE2335513C2 (de) | 1982-12-02 |
SE401886B (sv) | 1978-05-29 |
ZA744128B (en) | 1975-07-30 |
IT1018711B (it) | 1977-10-20 |
US4188506A (en) | 1980-02-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PL | Patent ceased |