| Patents for H04K 1 - Secret communication (16,771) |
|---|
| 06/27/2000 | CA2128305C Secure telecommunications |
| 06/21/2000 | EP0722639B1 Automatic real-time highway toll collection from moving vehicles |
| 06/20/2000 | US6078668 Apparatus and method for concealing data bursts in an analog scrambler using audio repetition |
| 06/20/2000 | US6078666 Audio signal processing method and related device with block order switching |
| 06/14/2000 | CN1256831A Sub-scrambling/descrambling method and sub-scrambling/descrambling device |
| 06/13/2000 | US6076167 Method and system for improving security in network applications |
| 06/06/2000 | US6072875 Method and apparatus for secure identification of a mobile user in a communication network |
| 05/30/2000 | US6070243 Deterministic user authentication service for communication network |
| 05/30/2000 | US6069954 Cryptographic data integrity with serial bit processing and pseudo-random generators |
| 05/25/2000 | WO2000030281A1 Method and system for securing wavelength division multiplex systems |
| 05/24/2000 | CN1052837C Generation of optical signals with RF components |
| 05/23/2000 | US6067566 Methods and apparatus for distributing live performances on MIDI devices via a non-real-time network protocol |
| 05/23/2000 | US6067028 Identification signal registering method and identification signal registering apparatus |
| 05/16/2000 | US6064737 Anti-piracy system for wireless telephony |
| 05/16/2000 | CA2125193C Method and apparatus for data encryption and transmission |
| 05/16/2000 | CA2025585C A system for controlling access to broadcast transmissions |
| 05/11/2000 | WO2000026838A1 Home point of sale (pos) terminal and electronic commerce method |
| 05/09/2000 | US6061359 Increased-capacity, packet spread-spectrum system and method |
| 05/04/2000 | WO2000025476A1 Apparatus and methods for cryptographic synchronization in packet based communications |
| 05/04/2000 | WO2000025467A1 Encryption and authentication methods and apparatus for securing telephone communications |
| 05/04/2000 | WO2000025214A1 Maintaining security in a distributed computer network |
| 05/04/2000 | DE19847665A1 Sendeempfänger für Datensignale, System zur Übertragung von Datensignalen, und Vorrichtung für den Einbau in einen Sendeempfänger Transceiver for data signals, the system for transmitting data signals, and apparatus for installation in a transceiver |
| 05/04/2000 | CA2347806A1 Encryption and authentication methods and apparatus for securing telephone communications |
| 05/04/2000 | CA2347011A1 Apparatus and methods for cryptographic synchronization in packet based communications |
| 05/02/2000 | CA2055132C Apparatus and method for upgrading terminals to maintain a secure communication network |
| 04/27/2000 | DE19847374A1 Arrangement for encrypted transmission of information |
| 04/26/2000 | EP0996251A1 Sub-scrambling/descrambling method and sub-scrambling/descrambling device |
| 04/26/2000 | EP0996232A2 Method and apparatus for interleaving a sequence of data elements |
| 04/25/2000 | US6055315 Distributed scrambling method and system |
| 04/20/2000 | WO2000022772A1 Robust watermark method and apparatus for digital signals |
| 04/20/2000 | WO2000022767A1 Transmitter-receiver for data signals, system for transmitting data signals, device for assembly in a transmitter-receiver and synchronization method |
| 04/19/2000 | CN1250994A Secure transmitting for broadband data information |
| 04/18/2000 | US6052469 Interoperable cryptographic key recovery system with verification by comparison |
| 04/18/2000 | US6052407 Apparatus and method for detection frequency hopping patterns embedded in radio frequency noise |
| 04/12/2000 | EP0993142A1 Safe transmission of broadband data messages |
| 04/11/2000 | US6049873 Scrambled information transmitting and receiving method |
| 04/11/2000 | US6049614 Synchronized chaotic system and communication system using synchronized chaotic system |
| 04/06/2000 | WO2000019730A2 Device and method for generating quasi-orthogonal code and spreading channel signals in mobile communication system |
| 04/06/2000 | WO2000019699A1 Superposition of data over voice |
| 04/06/2000 | CA2345794A1 Superposition of data over voice |
| 04/04/2000 | US6047069 Method and apparatus for preserving error correction capabilities during data encryption/decryption |
| 03/29/2000 | EP0988709A2 Method and apparatus for embedding auxiliary data in a primary data signal |
| 03/29/2000 | EP0839417A4 Decryption of retransmitted data in an encrypted communication system |
| 03/28/2000 | US6044158 Method and apparatus for communicating secure data over a telephone line using a cellular encryption apparatus |
| 03/22/2000 | CN1248322A Process control transmitter with adaptive analog-to-digital converter |
| 03/21/2000 | CA2156430C Generation of optical signals with rf components |
| 03/16/2000 | WO2000014918A1 System and method for encrypting data messages |
| 03/15/2000 | EP0823159A4 Methods and systems for securing communication within a boundary |
| 03/14/2000 | US6038549 Portable 1-way wireless financial messaging unit |
| 03/07/2000 | US6035044 Scrambling type method and apparatus for video transmission/receipt |
| 03/07/2000 | US6035040 System and method for decryption in the symbol domain |
| 03/01/2000 | CN1246007A Permutation code encryption and decryptment method and its encryption and decryptment equipment |
| 02/29/2000 | US6032260 Method for issuing a new authenticated electronic ticket based on an expired authenticated ticket and distributed server architecture for using same |
| 02/29/2000 | CA2137608C Apparatus and method for securing communication systems |
| 02/15/2000 | US6026193 Video steganography |
| 02/10/2000 | WO2000001076A8 Method of encoding bits in a signal |
| 02/10/2000 | WO1999053689A8 Conditional access via secure logging with simplified key management |
| 02/09/2000 | CN1244321A Encryption method for information in binary code |
| 02/08/2000 | US6023511 Cryptosystem for encrypting digital image or voice file |
| 02/03/2000 | WO1999065200A3 Procedure and device for transmitting information by radio |
| 02/03/2000 | WO1999052053A3 Method for computer network operation providing basis for usage fees |
| 02/02/2000 | CN1049060C Method for automatically authorizing payment for bank bill and the system for carrying out the method |
| 01/25/2000 | US6018582 Optical transmission system implementing encrypting by deterministic chaos |
| 01/20/2000 | WO1999005813A3 User authentication applet in a computer network |
| 01/19/2000 | CN1048606C Method and apparatus for coherent communication in a spread-spectrum communication system |
| 01/13/2000 | WO2000002339A1 An optical encryption and decryption method and system |
| 01/06/2000 | WO2000001076A1 Method of encoding bits in a signal |
| 01/06/2000 | WO2000000969A1 Apparatus and method for embedding and extracting information in analog signals using replica modulation |
| 01/06/2000 | CA2336099A1 Method of encoding bits in a signal |
| 01/06/2000 | CA2335975A1 Apparatus and method for embedding and extracting information in analog signals using replica modulation |
| 12/29/1999 | EP0700617A4 Secure communication system |
| 12/22/1999 | EP0966126A2 Encrypting speech coder |
| 12/22/1999 | EP0583241B1 Spread spectrum correlator |
| 12/22/1999 | CN1239247A Encrypting speech coder |
| 12/16/1999 | WO1999065200A2 Procedure and device for transmitting information by radio |
| 12/14/1999 | US6002773 Method and apparatus for encryption |
| 12/09/1999 | WO1999063695A1 System and method for secured network access |
| 12/08/1999 | EP0963070A1 Device for generating a plurality of code series simultaneously and cdma radio receiver comprising the device |
| 12/08/1999 | CN1237838A Method and system for controlling pilot measurement request order (PMRO) |
| 12/01/1999 | EP0961239A2 Digital watermarking and banknotes |
| 12/01/1999 | CN1237299A Methods and apparatus for enhanced CMEA including CMEA iteration preceded and followed by transformations and employing involuntary lookup |
| 12/01/1999 | CN1237297A Device for generating plurality of code series simultaneously and CDMA radio receiver comprising the device |
| 11/30/1999 | US5995539 Method and apparatus for signal transmission and reception |
| 11/30/1999 | US5995533 Apparatus and method for generating pseudorandom quantities based upon radio channel characteristics |
| 11/25/1999 | WO1999060514A1 System, method, and product for information embedding using an ensemble of non-intersecting embedding generators |
| 11/25/1999 | CA2332793A1 System, method, and product for information embedding using an ensemble of non-intersecting embedding generators |
| 11/24/1999 | EP0691059A4 Secure access telephone extension system and method |
| 11/23/1999 | US5991416 Scrambling and descrambling circuit for a cordless telephone |
| 11/23/1999 | US5991400 Time-shifted conditional access |
| 11/16/1999 | US5987016 Method and apparatus for tracking a communication signal in a wireless communication system |
| 11/09/1999 | US5982889 Method and apparatus for distributing information products |
| 11/04/1999 | WO1999039464A3 A system and a method for information security in optical communication networks |
| 11/02/1999 | US5978479 Descrambler |
| 10/28/1999 | WO1999055089A1 Multimedia adaptive scrambling system (mass) |
| 10/28/1999 | CA2329315A1 Multimedia adaptive scrambling system (mass) |
| 10/26/1999 | US5974142 Secure telecommunications |
| 10/21/1999 | WO1999053689A1 Conditional access via secure logging with simplified key management |
| 10/21/1999 | WO1999043120A8 Information access control system and method |
| 10/14/1999 | WO1999052053A2 Method for computer network operation providing basis for usage fees |
| 10/12/1999 | US5966373 Waveform and frame structure for a fixed wireless loop synchronous CDMA communications system |