| Patents for H04K 1 - Secret communication (16,771) |
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| 03/01/2001 | DE19941346A1 Sicherungseinrichtung Safety device |
| 02/28/2001 | EP0775398B1 Digital radio with vocoding encrypting codec |
| 02/27/2001 | US6195552 Method and system for controlling a pilot measurement request order (PMRO) |
| 02/14/2001 | EP1075679A2 Method for computer network operation providing basis for usage fees |
| 02/08/2001 | WO2001010071A1 System and method for secured data transmission within a wireless communication system |
| 02/08/2001 | WO2000076079B1 System and method for applying and removing gaussian covering functions |
| 02/07/2001 | CN1283288A Portable 1-way wireless finanial messaging unit |
| 01/25/2001 | WO2001006640A1 High efficiency feed-forward rf power amplifier with predistortion enhancement |
| 01/25/2001 | WO2001006440A1 Tokenless biometric electronic transactions using audio signature |
| 01/25/2001 | WO2000067409A3 A method of providing secure transmission for facsimile data modem signals |
| 01/25/2001 | CA2379835A1 Tokenless biometric electronic transactions using audio signature |
| 01/25/2001 | CA2379688A1 Method for transmitting data on viewable portion of a video signal |
| 01/24/2001 | CN1281561A Waveform and frame structure for fixed wireless loop synchronous CDMA communications system |
| 01/24/2001 | CN1281221A Scrambler and scrambling method |
| 01/24/2001 | CN1061192C Method and system for audio information dissemination using various transmission modes |
| 01/23/2001 | CA2102601C Spread spectrum correlator |
| 01/17/2001 | EP1068688A1 Method and apparatus for joint detection of data in a direct sequence spread spectrum communications system |
| 01/11/2001 | WO2001003110A2 Off-site detention monitoring system |
| 01/09/2001 | US6173403 Method and apparatus for distributing information products |
| 01/03/2001 | EP1064748A1 Optical layer survivability and security system |
| 12/28/2000 | WO2000079725A1 Stand-alone telecommunications security device |
| 12/27/2000 | CN1278377A Method and apapratus for tracking a communication signal in a wireless communication system |
| 12/14/2000 | WO2000076079A1 System and method for applying and removing gaussian covering functions |
| 12/12/2000 | US6160651 Optical layer survivability and security system using optical label switching and high-speed optical header reinsertion |
| 12/06/2000 | EP1057299A1 Information access control system and method |
| 12/06/2000 | CN1276117A Method for the cryptographic conversion of L-bit input blocks of digital data into L-bit output blocks |
| 12/05/2000 | US6158010 System and method for maintaining security in a distributed computer network |
| 12/05/2000 | US6157679 Method of adding encryption/encoding element to the modulation/demodulation process |
| 12/05/2000 | CA2024641C Method and apparatus for encrypting and decrypting time domain signals |
| 11/23/2000 | WO2000070819A1 Cryptographic engine using base conversion, logic operations and prng in data arrays to increase dispersion in ciphertext |
| 11/16/2000 | WO2000048350A3 Method and receiver for receiving a broadcast signal having encoded sound transmission and/or encoded data transmission, whereby the authentication signal is received via a different transmission path |
| 11/09/2000 | WO2000067467A1 An apparatus for providing secure transmission for facsimile data modem signals |
| 11/09/2000 | WO2000067466A1 System of providing secure transmission for facsimile data modem signals |
| 11/09/2000 | WO2000067409A2 A method of providing secure transmission for facsimile data modem signals |
| 11/09/2000 | WO2000067258A1 Method and apparatus for processing digitally encoded audio data |
| 11/09/2000 | WO2000026838A9 Home point of sale (pos) terminal and electronic commerce method |
| 11/08/2000 | CN1272648A Content management method and content management device |
| 11/07/2000 | USRE36946 Method and apparatus for privacy and authentication in wireless networks |
| 11/02/2000 | WO2000065536A1 Method for compensating the digital watermarking distortion on a multimedia signal |
| 11/02/2000 | WO2000045138A3 Dsss receiver |
| 11/02/2000 | EP0907269A4 Encryption device for information in binary code |
| 11/02/2000 | CA2367467A1 Method for compensating the digital watermarking distortion on a multimedia signal |
| 11/01/2000 | CN1272027A Safety device used in memory card |
| 10/31/2000 | US6141241 Universal memory element with systems employing same and apparatus and method for reading, writing and programming same |
| 10/26/2000 | WO2000064064A1 Digital radio system |
| 10/25/2000 | EP1046253A1 Video program bearing transport stream remultiplexer |
| 10/25/2000 | EP1046169A1 System and method for copy protection for digital signals |
| 10/24/2000 | US6137831 Method and apparatus for reducing receiver imposed distortion |
| 10/19/2000 | WO2000062476A1 Data transmission system |
| 10/19/2000 | WO2000062301A1 Universal memory element with systems employing same and apparatus and method for reading, writing and programming same |
| 10/19/2000 | CA2332867A1 Universal memory element with systems employing same and apparatus and method for reading, writing and programming same |
| 10/18/2000 | CN1057651C JTIDS signal direction finding and hopping-relieving intercept receiving method based on first-order bandpass sampling |
| 10/17/2000 | CA2181691C Method and apparatus for scrambling and descrambling of audio signals |
| 10/11/2000 | EP1043863A1 Method for the cryptographic conversion of l-bit input blocks of digital data into l-bit output blocks |
| 10/11/2000 | EP1043860A2 Security units, memory units, data processing units and data encryption methods |
| 10/11/2000 | CN1269648A Internal-core mode type encryption method and apparatus for computer telephone |
| 10/11/2000 | CN1269647A Watching historical collection system and method, information, collection system and method thereof |
| 10/05/2000 | WO2000059175A1 Correction of nonlinearity of i/q modulator |
| 10/05/2000 | WO2000059174A1 Correction of phase and amplitude imbalance of i/q modulator |
| 10/04/2000 | EP1040439A1 Portable 1-way wireless financial messaging unit |
| 09/27/2000 | EP1039671A2 Methods, system and computer program for encryption of computer telephony |
| 09/27/2000 | EP1039669A2 System and method for secure multiple wavelength communication on optical fibers |
| 09/27/2000 | EP1038401A1 Virtual lan printing over interactive cable television system |
| 09/27/2000 | EP1038397A1 Distributed scrambling method and system |
| 09/27/2000 | EP1038222A1 Waveform and frame structure for a fixed wireless loop synchronous cdma communications system |
| 09/27/2000 | CN1268264A Digitally signing agreements from remotely located nodes |
| 09/26/2000 | US6125182 Cryptographic engine using logic and base conversions |
| 09/13/2000 | EP1034665A1 Device and method for generating quasi-orthogonal code and spreading channel signals in mobile communication system |
| 09/13/2000 | EP1034625A1 Packet-switched spread-spectrum system |
| 09/05/2000 | US6115688 Process and device for the scalable coding of audio signals |
| 09/04/2000 | CA2298323A1 System and method for secure multiple wavelength communication on optical fibers |
| 08/31/2000 | WO2000051283A1 A method of videotext information encryption and security transmission in a network |
| 08/31/2000 | WO2000051279A1 Device and method for producing an encoded audio and/or video data stream |
| 08/29/2000 | US6111954 Steganographic methods and media for photography |
| 08/24/2000 | WO2000049597A1 Audio synthesis using digital sampling of coded waveforms |
| 08/17/2000 | WO2000048350A2 Method and receiver for receiving a broadcast signal having encoded sound transmission and/or encoded data transmission, whereby the authentication signal is received via a different transmission path |
| 08/17/2000 | DE19905628A1 Verfahren und Empfänger zum Empfang eines Rundfunksignal mit verschlüsselten Inhalten The method and receiver for receiving a broadcast signal with encrypted content |
| 08/16/2000 | EP1028568A1 Device and method for authentication of a remote user |
| 08/15/2000 | US6104241 High efficiency feed-forward RF power amplifier with predistoration enchancement |
| 08/15/2000 | CA2179787C Video scrambling |
| 08/10/2000 | WO2000019730A3 Device and method for generating quasi-orthogonal code and spreading channel signals in mobile communication system |
| 08/10/2000 | DE19907964C1 Encryption device for audio and/or video signals uses coder providing data stream with pre-determined syntax and encryption stage altering useful data in data stream without altering syntax |
| 08/03/2000 | WO2000045320A1 Tokenless biometric electronic debit and credit transactions |
| 08/03/2000 | WO2000045247A1 Tokenless biometric electronic check transactions |
| 08/03/2000 | WO2000045138A2 Dsss receiver |
| 08/03/2000 | CA2359899A1 Tokenless biometric electronic debit and credit transactions |
| 08/03/2000 | CA2359676A1 Tokenless biometric electronic check transactions |
| 08/01/2000 | US6097939 Method and apparatus for event data maintenance per MIN/ESN pair in a mobile telephone system |
| 07/27/2000 | WO2000044118A1 Optical layer survivability and security system |
| 07/27/2000 | CA2324246A1 Optical layer survivability and security system |
| 07/25/2000 | US6094485 SSL step-up |
| 07/25/2000 | CA2045619C Method and apparatus for preventing external detection of signal information |
| 07/19/2000 | EP1020805A2 Coding system and method for obtaining electronic online information related to coded physical items |
| 07/12/2000 | EP0627142A4 Method and apparatus of controlling processing devices during power transition |
| 07/11/2000 | US6088451 Security system and method for network element access |
| 07/06/2000 | WO2000039951A1 Method and system for entry of encrypted and non-encrypted information on a touch screen |
| 06/28/2000 | EP1012550A1 Process control transmitter with adaptive analog-to-digital converter |
| 06/27/2000 | US6081784 Methods and apparatus for encoding, decoding, encrypting and decrypting an audio signal, recording medium therefor, and method of transmitting an encoded encrypted audio signal |
| 06/27/2000 | US6081600 Method and apparatus for signaling privacy in personal communications systems |
| 06/27/2000 | CA2141900C Secure communication apparatus and method |