Patents
Patents for H04K 3 - Jamming of communication; Counter-measures (1,951)
08/2001
08/01/2001EP0986870B1 Radiotelephone filtering apparatus
07/2001
07/26/2001WO2001054429A2 Transmitter/receiver system, mobile transmitter/receiver apparatus, communication management apparatus, broadcasting station carrier receiver apparatus, and method of attempting communication of call origination information
07/26/2001WO2001054428A2 Call origination method using broadcast system
07/05/2001US20010006886 Communication inhibiting device and communication inhibiting system
06/2001
06/13/2001EP1107191A1 System and method for suppressing conducted emissions by a cryptographic device comprising an integrated circuit
05/2001
05/31/2001WO2001039401A1 Call suppressor for spread spectrum portable telephone
05/10/2001WO2001033734A1 A system and method for monitoring a wiretap
05/02/2001CN1293840A Receiver and receiving method
03/2001
03/28/2001EP1087559A1 Canceller for jamming wave by interference
03/21/2001CN2424581Y Omnibearing seeking multi-frequency wave inhibitor
03/07/2001EP1080546A1 Receiving method and receiver for spread sprectrum signals
02/2001
02/27/2001US6195529 Transmission blocker for mobile radio stations and method for preventing transmission activities of a mobile radio station
02/08/2001WO2000076079B1 System and method for applying and removing gaussian covering functions
02/01/2001WO2001008328A1 Device and system for preventing telephone call
01/2001
01/11/2001WO2001003352A1 Jammer
12/2000
12/20/2000EP1061686A1 Call masking system for mobile telephone
12/20/2000CN2411628Y Magnetic leakage loophole repair device
12/20/2000CN1277503A Method for intensifying security of information transmission
12/14/2000WO2000076079A1 System and method for applying and removing gaussian covering functions
10/2000
10/31/2000US6141371 Jamming suppression of spread spectrum antenna/receiver systems
10/25/2000EP1047215A2 A method of enhancing security for the transmission of information
10/19/2000CA2302140A1 A method of enhancing security for the transmission of information
10/18/2000CN1057651C JTIDS signal direction finding and hopping-relieving intercept receiving method based on first-order bandpass sampling
09/2000
09/28/2000WO2000057592A1 Communication blocking device and communication blocking method
09/28/2000DE19913320A1 Inaktivierung sicherheitsgefährdender Kommunikationsgeräte Inactivation safety hazardous communication devices
09/27/2000EP1039651A2 Method of deactivating communications devices causing a safety risk
09/21/2000WO2000055984A1 Receiving method and receiver for spread spectrum signals
09/19/2000US6122309 Method and apparatus for performing interference suppression using modal moment estimates
09/13/2000EP1034411A1 Pyro-acoustic generator for protecting submarines and surface ships
09/12/2000US6118805 Method and apparatus for performing frequency hopping adaptation
09/05/2000US6114684 Laser listening device detector
08/2000
08/29/2000US6112052 Remote controlled noise jamming device
08/22/2000US6107954 Optical RF support network
07/2000
07/25/2000CA2045619C Method and apparatus for preventing external detection of signal information
07/05/2000CN1259241A Radiotelephone filtering apparatus
07/04/2000US6084919 Communication unit having spectral adaptability
06/2000
06/14/2000EP1008246A2 Jamming suppression of spread spectrum antenna/receiver systems
06/07/2000EP1005729A1 Devices enabling radiotelephones to manage filtering and interference
05/2000
05/25/2000WO2000030281A1 Method and system for securing wavelength division multiplex systems
05/03/2000EP0904551B1 Spoofing detection system for a satellite positioning system
03/2000
03/22/2000EP0986870A1 Radiotelephone filtering apparatus
02/2000
02/09/2000EP0978000A1 Increased jamming immunity by optimizing processing gain for gps/ins systems
01/2000
01/19/2000EP0972349A1 Interference suppression using modal moment estimates
12/1999
12/16/1999WO1999065176A1 Radiofrequency device for inhibiting tone ringing and interference caused by portable telephones
12/16/1999WO1999065173A1 Canceller for jamming wave by interference
12/01/1999CN2351910Y Electromagnetic wave interference preventing shell fragment
11/1999
11/24/1999CN1236528A Cellular communications firewall
11/17/1999EP0956674A1 Apparatus for protecting against radiowave transmission from a mobile communication device
11/09/1999US5983160 Increase jamming immunity by optimizing processing gain for GPS/INS systems
09/1999
09/15/1999CN1228889A System and method for adaptive interference cancelling
09/08/1999EP0940051A2 Cellular communications firewall
09/07/1999US5950110 Jamming detection in a wireless security system
09/02/1999WO1999044322A1 Call masking system for mobile telephone
08/1999
08/31/1999CA2121684C Automatic gain control for reducing effects of jamming
08/17/1999US5940509 Method and apparatus for controlling country specific frequency allocation
08/05/1999WO1999039473A1 Frequency hopping adaptation
08/05/1999WO1999039472A1 Communication unit having spectral adaptability
08/05/1999WO1999039445A1 Interference suppression using modal moment estimates
07/1999
07/20/1999CA2092125C Apparatus and method for real time interference signal rejection
06/1999
06/10/1999WO1999028699A1 Pyro-acoustic generator for protecting submarines and surface ships
06/10/1999CA2312780A1 Pyro-acoustic generator for protecting submarines and surface ships
06/02/1999CN2322326Y Anti radio interference double-filter combination type inhibitor
04/1999
04/15/1999WO1999018688A1 Apparatus for protecting against radiowave transmission from a mobile communication device
04/14/1999EP0908018A2 System and method for adaptive interference cancelling
04/14/1999CN1213908A Method, and system, and base station, and mobile station
03/1999
03/31/1999EP0904551A1 Spoofing detection system for a satellite positioning system
03/31/1999EP0591393B1 A method and an apparatus for preventing extraneous detection of signal information
03/24/1999CN1212091A Automatic channel switching for jamming avoidance in burst-mode packet data wireless communication networks
03/04/1999WO1998056192A3 Cellular communications firewall
02/1999
02/09/1999US5870425 Differential receiver of direct sequence spread spectrum signals
01/1999
01/14/1999WO1999001958A1 Devices enabling radiotelephones to manage filtering and interference
01/13/1999EP0891110A1 Method and system for preventing a mobile station from causing disturbance
01/10/1999CA2240540A1 Method, and system, and base station, and mobile station
01/07/1999EP0885490A3 Automatic channel switching for jamming avoidance in burst-mode packet data wireless communication networks
12/1998
12/23/1998EP0885490A2 Automatic channel switching for jamming avoidance in burst-mode packet data wireless communication networks
12/10/1998WO1998056192A2 Cellular communications firewall
12/10/1998WO1998056130A1 Radiotelephone filtering apparatus
12/10/1998WO1998034412A3 Method and device for disabling cellular phones
12/10/1998CA2291654A1 Radiotelephone filtering apparatus
12/09/1998EP0660901B1 Remote vehicle access featuring high security
10/1998
10/29/1998WO1998048295A1 Increased jamming immunity by optimizing processing gain for gps/ins systems
10/28/1998EP0873598A1 A method for direct sequence spreading of a data sequence (dsss)
10/20/1998US5825898 System and method for adaptive interference cancelling
10/15/1998WO1998032239A3 Jamming suppression of spread spectrum antenna/receiver systems
10/13/1998US5822430 System for encoding encryption/decryption information into IFF challenges
10/13/1998US5822429 System for preventing global positioning satellite signal reception to unauthorized personnel
09/1998
09/30/1998CN1194521A JTIDS signal direction finding and hopping-relieving intercept receiving method based on first-order bandpass sampling
09/29/1998US5815818 Cellular mobile communication system wherein service area is reduced in response to control signal contamination
09/03/1998DE19705816A1 Frequency-hopping transmitter localisation method
08/1998
08/20/1998WO1998036544A1 Voice and image signal transmission method using code output
08/20/1998WO1998027667A3 Automatic channel switching for jamming avoidance in burst-mode packet data wireless communication networks
08/06/1998WO1998034412A2 Method and device for disabling cellular phones
08/05/1998EP0856999A2 Method for preventing transmission from a mobile station
07/1998
07/23/1998WO1998032239A2 Jamming suppression of spread spectrum antenna/receiver systems
06/1998
06/25/1998WO1998027667A2 Automatic channel switching for jamming avoidance in burst-mode packet data wireless communication networks
06/10/1998EP0847161A1 System for interception, direction finding and localisation of broadband radio transmissions
04/1998
04/30/1998WO1998018232A1 Cellular telephone jamming method and device
04/28/1998US5745575 Identification-friend-or-foe (IFF) system using variable codes
02/1998
02/19/1998WO1997050186A3 System and method for adaptive interference cancelling
12/1997
12/31/1997WO1997050186A2 System and method for adaptive interference cancelling
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