EP0167442A3 - Système de communication à sécurité - Google Patents
Système de communication à sécurité Download PDFInfo
- Publication number
- EP0167442A3 EP0167442A3 EP85401239A EP85401239A EP0167442A3 EP 0167442 A3 EP0167442 A3 EP 0167442A3 EP 85401239 A EP85401239 A EP 85401239A EP 85401239 A EP85401239 A EP 85401239A EP 0167442 A3 EP0167442 A3 EP 0167442A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- frequency
- message
- receiver
- transmitter
- data link
- Prior art date
- 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.)
- Withdrawn
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)
- Mobile Radio Communication Systems (AREA)
- Communication Control (AREA)
- Selective Calling Equipment (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US62588584A | 1984-06-29 | 1984-06-29 | |
US625885 | 1984-06-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0167442A2 EP0167442A2 (fr) | 1986-01-08 |
EP0167442A3 true EP0167442A3 (fr) | 1986-12-30 |
Family
ID=24508031
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85401239A Withdrawn EP0167442A3 (fr) | 1984-06-29 | 1985-06-21 | Système de communication à sécurité |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0167442A3 (fr) |
CA (1) | CA1244886A (fr) |
IL (1) | IL75670A (fr) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IL82561A (en) * | 1986-05-27 | 1991-12-15 | Fairchild Weston Systems Inc | Secure communication system for multiple remote units |
WO1995000936A1 (fr) * | 1993-06-23 | 1995-01-05 | Colebrand Limited | Balise d'identification |
GB2307624B (en) * | 1995-11-23 | 2000-02-09 | Motorola Israel Ltd | Data transmission method for a channel hopping communication system |
GB2456534A (en) * | 2008-01-17 | 2009-07-22 | Vodafone Plc | Changing communication channels for secure encrypted communications |
US8792640B2 (en) | 2008-01-29 | 2014-07-29 | Sony Corporation | Systems and methods for securing a digital communications link |
US8457175B2 (en) | 2008-01-29 | 2013-06-04 | Sony Corporation | Systems and methods for securing a digital communications link |
US8159336B2 (en) | 2009-12-21 | 2012-04-17 | Continental Automotive Systems Us, Inc. | Apparatus and method for maintaining communication with a stolen vehicle tracking device |
US8884821B2 (en) | 2009-12-21 | 2014-11-11 | Continental Automotive Systems, Inc. | Apparatus and method for determining vehicle location |
US8175573B2 (en) * | 2009-12-21 | 2012-05-08 | Continental Automotive Systems, Inc. | Apparatus and method for maintaining communications with a vehicle in the presence of jamming |
US8611847B2 (en) | 2009-12-21 | 2013-12-17 | Continental Automotive Systems, Inc. | Apparatus and method for detecting communication interference |
US8896431B2 (en) | 2009-12-21 | 2014-11-25 | Continental Automotive Systems, Inc. | Apparatus and method for compromised vehicle tracking |
US8639209B2 (en) | 2009-12-21 | 2014-01-28 | Continental Automotive Systems, Inc. | Apparatus and method for detecting a cloned base station |
US8319615B2 (en) | 2009-12-21 | 2012-11-27 | Continental Automotive Systems, Inc. | Apparatus and method for detecting jamming of communications |
US8320872B2 (en) | 2009-12-21 | 2012-11-27 | Continental Automotive Systems, Inc. | Apparatus and method for broadcasting the detection of RF jammer presence |
US9102293B2 (en) | 2009-12-21 | 2015-08-11 | Continental Automotive Systems, Inc. | Apparatus and method for reducing false alarms in stolen vehicle tracking |
US10027682B2 (en) | 2009-12-21 | 2018-07-17 | Continental Automotive Systems, Inc. | Apparatus and method for detecting a cloned base station |
GB2485142A (en) | 2010-10-27 | 2012-05-09 | Nds Ltd | Secure broadcast/multicast of media content |
US9031538B2 (en) | 2012-02-16 | 2015-05-12 | Continental Automotive Systems, Inc. | Method and apparatus to determine if a cellular jamming signal is malicious or non-malicious based on received signal strength |
US9119064B2 (en) * | 2013-11-20 | 2015-08-25 | At&T Intellectual Property I, L.P. | Method and apparatus for providing broadcast channel encryption to enhance cellular network security |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4005428A (en) * | 1975-05-15 | 1977-01-25 | Sound Technology, Inc. | Secure remote control communication systems |
JPS5530227A (en) * | 1978-08-24 | 1980-03-04 | Matsushima Kogyo Co Ltd | Communication system |
FR2485305A1 (fr) * | 1980-06-19 | 1981-12-24 | Oak Industries Inc | Dispositif de codage de signaux portant des informations numeriques |
DE3230726A1 (de) * | 1982-08-18 | 1984-02-23 | Siemens AG, 1000 Berlin und 8000 München | Verfahren zur stoerresistenten funkuebertragung auf kurzwelle |
-
1985
- 1985-06-21 EP EP85401239A patent/EP0167442A3/fr not_active Withdrawn
- 1985-06-28 CA CA000486105A patent/CA1244886A/fr not_active Expired
- 1985-06-28 IL IL7567085A patent/IL75670A/xx unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4005428A (en) * | 1975-05-15 | 1977-01-25 | Sound Technology, Inc. | Secure remote control communication systems |
JPS5530227A (en) * | 1978-08-24 | 1980-03-04 | Matsushima Kogyo Co Ltd | Communication system |
FR2485305A1 (fr) * | 1980-06-19 | 1981-12-24 | Oak Industries Inc | Dispositif de codage de signaux portant des informations numeriques |
DE3230726A1 (de) * | 1982-08-18 | 1984-02-23 | Siemens AG, 1000 Berlin und 8000 München | Verfahren zur stoerresistenten funkuebertragung auf kurzwelle |
Non-Patent Citations (2)
Title |
---|
IEEE 1977, ULTRASONICS SYMPOSIUM PROCEEDINGS, Phoenix, US, 26th-28th October 1977, pages 505-510, Institute of Electrical and Electronics Engineers, New York, US; J.U. BEUSCH: "Roles of SAW and CCD in current spread spectrum communications systems" * |
RADIO AND ELECTRONIC ENGINEER, vol. 52, no. 5, May 1982, pages 246-258, Institution of Electronic and Radio Engineers, London, GB; P.M. GRANT: "The potential application of analogue matched and adaptive filters in spread-spectrum communications" * |
Also Published As
Publication number | Publication date |
---|---|
CA1244886A (fr) | 1988-11-15 |
IL75670A (en) | 1989-06-30 |
EP0167442A2 (fr) | 1986-01-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): CH DE FR GB IT LI NL SE |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): CH DE FR GB IT LI NL SE |
|
17P | Request for examination filed |
Effective date: 19870605 |
|
17Q | First examination report despatched |
Effective date: 19890607 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19900630 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: WAGGENER, WILLIAM N. |