SE7804577L - Kommunikationsanleggning - Google Patents
KommunikationsanleggningInfo
- Publication number
- SE7804577L SE7804577L SE7804577A SE7804577A SE7804577L SE 7804577 L SE7804577 L SE 7804577L SE 7804577 A SE7804577 A SE 7804577A SE 7804577 A SE7804577 A SE 7804577A SE 7804577 L SE7804577 L SE 7804577L
- Authority
- SE
- Sweden
- Prior art keywords
- communication system
- communication
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K1/00—Secret communication
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Relay Systems (AREA)
- Radio Transmission System (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/792,969 US4167700A (en) | 1977-05-02 | 1977-05-02 | Digital voice protection system and method |
Publications (3)
Publication Number | Publication Date |
---|---|
SE7804577L true SE7804577L (sv) | 1978-11-03 |
SE429806B SE429806B (sv) | 1983-09-26 |
SE429806C SE429806C (sv) | 1985-12-02 |
Family
ID=25158655
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE7804577A SE429806C (sv) | 1977-05-02 | 1978-04-21 | Kommunikationssystem |
Country Status (6)
Country | Link |
---|---|
US (1) | US4167700A (sv) |
JP (1) | JPS53136404A (sv) |
CH (1) | CH631584A5 (sv) |
DE (1) | DE2818587A1 (sv) |
NL (1) | NL190501C (sv) |
SE (1) | SE429806C (sv) |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5648732A (en) * | 1979-09-28 | 1981-05-02 | Nec Corp | Radio equipment |
US4323732A (en) * | 1980-02-04 | 1982-04-06 | Texas Instruments Incorporated | Speech synthesis system with alternative coded or uncoded parameter formats |
JPS56124104A (en) * | 1980-02-29 | 1981-09-29 | Teac Co | Secret sound recording and reproducing device |
US4411017A (en) * | 1980-03-14 | 1983-10-18 | Harris Corporation | Secure mobile telephone system |
JPS5799043A (en) * | 1980-12-11 | 1982-06-19 | Matsushita Electric Ind Co Ltd | Mobile radio communication system |
JPS57113404A (en) * | 1980-12-30 | 1982-07-14 | Oikawa Hisao | Signal secrecy maintaining device |
JPS5961242A (ja) * | 1982-09-30 | 1984-04-07 | Fujitsu Ltd | 秘匿通信システム |
US4581746A (en) * | 1983-12-27 | 1986-04-08 | At&T Bell Laboratories | Technique for insertion of digital data bursts into an adaptively encoded information bit stream |
US4560832A (en) * | 1984-02-27 | 1985-12-24 | T.A.D. Avanti, Inc. | Telephone system |
US4920567A (en) * | 1986-07-03 | 1990-04-24 | Motorola, Inc. | Secure telephone terminal |
US4815128A (en) * | 1986-07-03 | 1989-03-21 | Motorola, Inc. | Gateway system and method for interconnecting telephone calls with a digital voice protected radio network |
US4893339A (en) * | 1986-09-03 | 1990-01-09 | Motorola, Inc. | Secure communication system |
US4882751A (en) * | 1986-10-31 | 1989-11-21 | Motorola, Inc. | Secure trunked communications system |
US4754467A (en) * | 1987-07-01 | 1988-06-28 | Motorola, Inc. | Digital signal detection with signal buffering and message insertion |
US5077791A (en) * | 1989-06-26 | 1991-12-31 | Motorola, Inc. | Method and apparatus for preventing unauthorized transmissions |
US5305384A (en) * | 1990-12-04 | 1994-04-19 | Chips International, Inc. | Apparatus, system and method for transmitting secure signals over narrow spaced channels |
US5150401A (en) * | 1990-12-04 | 1992-09-22 | Chips International, Inc. | Retrofittable encryption/decryption apparatus using modified frequency modulation |
US5392354A (en) * | 1991-10-30 | 1995-02-21 | Fujitsu Limited | Cordless phone system capable of scrambling communication signals |
AU6696994A (en) * | 1994-03-18 | 1995-10-09 | Thomson Consumer Electronics, Inc | Data decryption apparatus in a subscription television signal receiving system |
US6256491B1 (en) | 1997-12-31 | 2001-07-03 | Transcript International, Inc. | Voice security between a composite channel telephone communications link and a telephone |
US6356638B1 (en) * | 1998-07-30 | 2002-03-12 | General Dynamics Decision Systems, Inc. | Radio wireline interface and method for secure communication |
US6636607B1 (en) * | 1998-10-08 | 2003-10-21 | Ati International Srl | Method and apparatus for controlling display of content signals |
WO2000025476A1 (en) | 1998-10-28 | 2000-05-04 | L-3 Communications Corporation | Apparatus and methods for cryptographic synchronization in packet based communications |
US6990119B2 (en) * | 2001-02-07 | 2006-01-24 | Qualcomm, Inc. | Method and apparatus to facilitate a transparent service option transition |
US7437180B1 (en) * | 2002-12-10 | 2008-10-14 | Rockwell Collins, Inc. | Over-the-air signaling service method and apparatus |
US7961083B2 (en) * | 2007-08-29 | 2011-06-14 | Infineon Technologies Ag | Digital satellite receiver controller |
US9392355B1 (en) | 2013-09-19 | 2016-07-12 | Voyetra Turtle Beach, Inc. | Gaming headset with voice scrambling for private in-game conversations |
EP4254833A1 (en) | 2022-03-30 | 2023-10-04 | AIRBUS HELICOPTERS DEUTSCHLAND GmbH | A communication system for an aircraft |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE978039C (de) * | 1962-03-09 | 1976-07-22 | Siemens AG, 1000 Berlin und 8000 München | Verfahren und Einrichtung zum selbsttätigen Umschalten von Klarbetrieb auf verschlüsselten Betrieb und umgekehrt in Fernschreibanlagen |
US3688197A (en) * | 1965-10-21 | 1972-08-29 | Kahn Res Lab | Communication system with selection means for determining the modulation mode of a received signal |
US3507980A (en) * | 1966-08-15 | 1970-04-21 | Xerox Corp | Communication system |
US3624297A (en) * | 1969-04-21 | 1971-11-30 | Motorola Inc | Tone-controlled speech scrambler |
US3686571A (en) * | 1969-08-01 | 1972-08-22 | Zaring Ind Inc | Speech scrambler |
US3639690A (en) * | 1969-09-10 | 1972-02-01 | Motorola Inc | Digital privacy system |
US3674936A (en) * | 1970-02-26 | 1972-07-04 | Burroughs Corp | Voice conference system |
GB1399365A (en) * | 1971-09-07 | 1975-07-02 | Boeing Co | Apparatus for coding audio signals |
US4020285A (en) * | 1972-09-29 | 1977-04-26 | Datotek, Inc. | Voice security method and system |
US3909534A (en) * | 1973-09-07 | 1975-09-30 | Boeing Co | Voice privacy unit for intercommunication systems |
US3920894A (en) * | 1974-03-11 | 1975-11-18 | Bell Telephone Labor Inc | Pseudo-random parallel word generator |
-
1977
- 1977-05-02 US US05/792,969 patent/US4167700A/en not_active Expired - Lifetime
-
1978
- 1978-04-21 SE SE7804577A patent/SE429806C/sv not_active IP Right Cessation
- 1978-04-27 DE DE19782818587 patent/DE2818587A1/de active Granted
- 1978-05-01 JP JP5259578A patent/JPS53136404A/ja active Granted
- 1978-05-02 CH CH472478A patent/CH631584A5/de not_active IP Right Cessation
- 1978-05-02 NL NLAANVRAGE7804727,A patent/NL190501C/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE2818587A1 (de) | 1978-11-09 |
US4167700A (en) | 1979-09-11 |
DE2818587C2 (sv) | 1990-06-13 |
SE429806B (sv) | 1983-09-26 |
JPS53136404A (en) | 1978-11-29 |
NL7804727A (nl) | 1978-11-06 |
NL190501C (nl) | 1994-03-16 |
NL190501B (nl) | 1993-10-18 |
JPS6238898B2 (sv) | 1987-08-20 |
CH631584A5 (de) | 1982-08-13 |
SE429806C (sv) | 1985-12-02 |
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