Patents
Sitemap › H04 - Electric communication technique › H04K - Secret communication; Jamming of communication › H04K 1 - Secret communication
Patents for H04K 1 - Secret communication (16,771)
10/1999
10/06/1999EP0908024A4 Packet-switched spread-spectrum system
10/06/1999EP0734624A4 A non-deterministic public key encryption system
10/06/1999CN1230831A Single-wire chaotic secret communication system
10/05/1999US5963621 Secure communication system
10/05/1999US5963246 Multi-point video conference system
10/05/1999US5963141 Apparatus for checking identification signal and method thereof
09/1999
09/29/1999EP0944980A1 Method and system for improving security in network applications
09/28/1999US5960029 Coherent dual-channel QPSK modulator/demodulator for CDMA systems, and modulating/demodulating methods therefor
09/28/1999CA2195938C Method of and apparatus for scrambling a video signal with full network transmission and recording capability
09/28/1999CA2039699C Synchronizing method in a mobile radio system
09/21/1999CA2163609C Wacs-type mobile communication with a unified frame format
09/21/1999CA2134230C Method and apparatus for coherent communication in a spread-spectrum communication system
09/16/1999WO1999046885A1 Sub-scrambling/descrambling method and sub-scrambling/descrambling device
09/07/1999US5949878 Method and apparatus for providing voice privacy in electronic communication systems
09/07/1999US5949788 In a network device
09/01/1999EP0938790A2 A method and device for executing a decrypting mechanism through calculating a standardized modular exponentiation for thwarting timing attacks
08/1999
08/31/1999US5946354 Hard disk drive read channel with half speed timing
08/26/1999WO1999043120A1 Information access control system and method
08/25/1999EP0846375B1 Process and device for the scalable coding of audio signals
08/17/1999US5940514 Encrypted holographic data storage based on orthogonal phase code multiplexing
08/17/1999CA2155220C Secure access telephone extension system and method
08/12/1999WO1999040698A1 Method and apparatus for joint detection of data in a direct sequence spread spectrum communications system
08/10/1999US5937000 Method and apparatus for embedding auxiliary data in a primary data signal
08/10/1999US5936149 Personal date/time notary device
08/05/1999WO1999039464A2 A system and a method for information security in optical communication networks
07/1999
07/27/1999US5930360 Method of scrambling three-dimensional image
07/22/1999WO1999037048A1 Video program bearing transport stream remultiplexer
07/15/1999WO1999035647A1 System and method for copy protection for digital signals
07/15/1999WO1999027765A3 Sustaining chaos by using basin boundary saddles
07/15/1999CA2434734A1 Method of copy protecting signals
07/15/1999CA2434702A1 Method of copy protecting signals
07/13/1999US5923759 System for securely exchanging data with smart cards
07/08/1999WO1999034547A1 Secret communication method between three participants
07/07/1999EP0927473A1 Methods and apparatus for enhanced cmea including a cmea iteration preceded and followed by transformations and employing an involuntary lookup
07/07/1999CN1222272A Method and appts. for data processing
07/07/1999CN1222011A Device and method for generating spread spectrum signals
07/01/1999WO1999033011A1 Portable 1-way wireless financial messaging unit
07/01/1999CA2313798A1 Portable 1-way wireless financial messaging unit
06/1999
06/30/1999EP0925663A1 Method for access control in a virtual postage metering system
06/29/1999US5917915 Scramble/descramble method and apparatus for data broadcasting
06/24/1999WO1998059472A3 Filter method and apparatus for combined multiple frequency signals
06/23/1999EP0924532A2 Method and apparatus for receiving GPS/GLONASS signals
06/17/1999WO1999030501A1 Virtual lan printing over interactive cable television system
06/17/1999WO1999030496A1 Distributed scrambling method and system
06/17/1999WO1999030234A1 Waveform and frame structure for a fixed wireless loop synchronous cdma communications system
06/17/1999CA2313133A1 Virtual lan printing over interactive cable television system
06/15/1999US5912973 Method for scrambling and/or descrambling FM subcarrier data
06/10/1999WO1999029054A1 Packet-switched spread-spectrum system
06/10/1999WO1999027765A2 Sustaining chaos by using basin boundary saddles
06/10/1999WO1999014880A3 A method and device for executing a decrypting mechanism through calculating a standardized modular exponentiation for thwarting timing attacks
06/01/1999US5909188 Process control transmitter with adaptive analog-to-digital converter
05/1999
05/19/1999WO1999026369A1 Device for generating a plurality of code series simultaneously and cdma radio receiver comprising the device
05/19/1999EP0916209A1 Cryptographic key recovery system
05/14/1999WO1999023770A1 Method and apparatus for tracking a communication signal in a wireless communication system
05/14/1999CA2308483A1 Method and apparatus for tracking a communication signal in a wireless communication system
05/12/1999EP0915585A1 Method of transmitting and receiving data
05/11/1999US5903648 Method and apparatus for encryption
04/1999
04/21/1999EP0910190A2 System and method for decryption in the symbol domain
04/17/1999CA2248445A1 System and method for decryption in the symbol domain
04/14/1999EP0908024A1 Packet-switched spread-spectrum system
04/13/1999US5894521 System and method for encrypting sensitive information
04/13/1999CA2067411C Communication network intended for secure transmission
04/07/1999EP0907269A1 Encryption device for information in binary code
04/06/1999US5893067 Method and apparatus for echo data hiding in audio signals
04/06/1999CA2082675C Method and apparatus for scrambling and descrambling of video signals with edge fill
03/1999
03/30/1999US5889622 Data processing device including a microprocessor and an additional arithmetic unit
03/25/1999WO1999014880A2 A method and device for executing a decrypting mechanism through calculating a standardized modular exponentiation for thwarting timing attacks
03/23/1999US5887243 Signal processing apparatus and methods
03/23/1999US5887061 Compression coding device with scrambling function and expansion reproducing device with descrambling function
03/16/1999US5883957 Methods and apparatus for encrypting and decrypting MIDI files
03/10/1999EP0900487A1 Cryptographic file labeling system for supporting secured access by multiple users
03/10/1999CN2310426Y Information burst radio receiving process relaying device
03/10/1999CN2310425Y Information burst radio transmission transducing transmitter
02/1999
02/17/1999EP0897226A2 Digital audio data transmitting apparatus and method
02/17/1999CN1208294A Data transmitting apparatus and data transmitting method
02/04/1999WO1999005817A1 Methods and apparatus for enhanced cmea including a cmea iteration preceded and followed by transformations and employing an involuntary lookup
02/04/1999WO1999005813A2 User authentication applet in a computer network
02/04/1999CA2266683A1 Methods and apparatus for enhanced cmea including a cmea iteration preceded and followed by transformations and employing an involuntary lookup
01/1999
01/28/1999DE19732122A1 Data transmission method
01/20/1999EP0891661A1 Method and apparatus for data processing
01/19/1999US5862221 Scramble wireless communication system
01/19/1999US5862133 For communicating data
01/07/1999WO1999000930A1 Method for the cryptographic conversion of l-bit input blocks of digital data into l-bit output blocks
12/1998
12/30/1998WO1998059472A2 Filter method and apparatus for combined multiple frequency signals
12/29/1998CA2127539C Method and apparatus of controlling processing devices during power transition
12/23/1998EP0744105B1 Method and system for audio scrambling and descrambling
12/22/1998US5852785 Secure access telephone extension system and method in a cordless telephone system
12/22/1998US5852662 Cordless phone
12/22/1998CA2120665C Personal date/time notary device
12/09/1998EP0882337A1 Voice messaging system and method making efficient use of orthogonal modulation components
12/09/1998CN1201301A Radio data-transmission equipment
12/08/1998US5848157 System for the shifting of a television signal scrambler
12/08/1998US5848156 Communication method and apparatus for carrying out cipher communications telephonically
12/01/1998US5844988 Method and apparatus for scrambling and descrambling of video signal with edge fill
12/01/1998CA2063105C Method and apparatus for securing television signals using sideband interdiction
11/1998
11/25/1998EP0776557A4 Multi-band, multi-mode spread-spectrum communication system
11/24/1998US5841863 Method and apparatus for scrambling and descrambling of video signals with edge fill
11/17/1998US5838797 Secure communication by encryption/decryption of vector at PSK modulation/detection stage
11/12/1998WO1998051050A1 Method and apparatus for multipoint trunking
11/10/1998US5835590 Method and apparatus for signal transmission and reception
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