| Patents for H04K 1 - Secret communication (16,771) |
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| 04/02/2002 | CA2136287C Apparatus for avoiding complementarity in an encryption algorithm |
| 03/28/2002 | WO2002025662A1 Distribution of content |
| 03/28/2002 | WO2001084763A3 Method for transmitting payment information between a terminal and a third equipment |
| 03/28/2002 | US20020037027 Apparatus and methods for sample selection and reuse of rake fingers in spread spectrum systems |
| 03/27/2002 | CN1342376A Radio communication device and radio communication method |
| 03/26/2002 | US6363159 Consumer audio appliance responsive to watermark data |
| 03/26/2002 | US6363150 Billing method for customers having IP telephony service with multiple levels of security |
| 03/21/2002 | WO2002023794A2 Polarisation encryption/decryption module |
| 03/21/2002 | WO2002023308A2 Techniques for providing and obtaining research and development information technology on remote computing resources |
| 03/21/2002 | US20020035682 Data transmission method, user equipment and GPRS/EDGE radio access network |
| 03/21/2002 | US20020034297 Wireless methods and devices employing steganography |
| 03/21/2002 | US20020034257 Method for protection of contactless signal transmission from a transmitter to a receiver, and a signal transmission device |
| 03/20/2002 | EP1189378A1 Frequency shift transceiver |
| 03/14/2002 | WO2001054341A3 A method of scrambling a signal |
| 03/14/2002 | US20020031226 Method and system for adapting a telephone line modem for use on the power line |
| 03/14/2002 | US20020031170 Apparatus and method for moving PN hypothesis in high speed searcher |
| 03/13/2002 | EP1186113A1 System and method for applying and removing gaussian covering functions |
| 03/13/2002 | CN1080964C Apapratus and method for storing data |
| 03/12/2002 | US6356638 Radio wireline interface and method for secure communication |
| 03/07/2002 | WO2002019569A1 Data transmitting apparatus, radio communication system and radio communication method |
| 03/07/2002 | US20020027992 Content distribution system, content distribution method, information processing apparatus, and program providing medium |
| 03/05/2002 | US6353672 Steganography using dynamic codes |
| 02/28/2002 | WO2001047165A3 Method and circuit arrangement for secure digital transmission |
| 02/28/2002 | US20020024398 Correction of nonlinearity of I/Q modulator |
| 02/27/2002 | CN1337836A Expense message renewing using dispersion control |
| 02/21/2002 | US20020021825 Methods for identifying equipment used in counterfeiting |
| 02/19/2002 | US6349140 Information receiving system for descrambling scrambled information and presenting the descrambled information |
| 02/14/2002 | US20020018572 Methods for detecting alteration of audio |
| 02/13/2002 | EP1179203A1 Method for compensating the digital watermarking distortion on a multimedia signal |
| 02/07/2002 | WO2002011387A1 Apparatus and methods for sample selection and reuse of rake fingers in spread spectrum systems |
| 02/07/2002 | WO2002011362A1 Data transmission method, user equipment and gprs/edge radio access network |
| 02/07/2002 | WO2002011342A1 Method for transmitting data by means of chaotic signals |
| 02/07/2002 | WO2001084806A3 Method and system for adapting a telephone line modem for use on the power line |
| 02/07/2002 | WO2001033766A3 Random number generation for encrypting cellular communications |
| 02/07/2002 | US20020015450 Correction of phase and amplitude imbalance of I/Q modulator |
| 01/31/2002 | US20020012431 Encryption system using light interference theory |
| 01/30/2002 | EP1175675A1 Method and apparatus for processing digitally encoded audio data |
| 01/29/2002 | US6343138 Security documents with hidden digital data |
| 01/24/2002 | US20020009197 Cryptographic method for color images and digital cinema |
| 01/24/2002 | US20020009132 Method and apparatus for signal transmission and reception |
| 01/23/2002 | EP1174759A1 Optical boolean logic devices |
| 01/23/2002 | EP1173934A1 Digital radio system |
| 01/17/2002 | WO2001054343A3 Method and apparatus for achieving crypto-syncronization in a packet data communication system |
| 01/15/2002 | US6339830 Deterministic user authentication service for communication network |
| 01/15/2002 | US6339612 Method and apparatus for joint detection of data in a direct sequence spread spectrum communications system |
| 01/10/2002 | WO2002003606A1 A method and system for secure transmission of data |
| 01/09/2002 | CN1077751C Analog signal launch modulating encryption and receiving control system |
| 01/03/2002 | US20020001396 Files and methods employing common information in both header and steganographic embedding |
| 01/03/2002 | US20020001337 Hybrid spread spectrum method and system for wirelessly transmitting and receiving wideband digital data |
| 01/02/2002 | EP1166519A1 Correction of nonlinearity of i/q modulator |
| 01/02/2002 | EP1166518A1 Correction of phase and amplitude imbalance of i/q modulator |
| 12/26/2001 | CN2468228Y Radio with IC card |
| 12/20/2001 | US20010053236 Audio or video steganography |
| 12/19/2001 | EP0688480B1 A method and system for audio information dissemination using various transmission modes |
| 12/12/2001 | EP1108288A4 Method of encoding bits in a signal |
| 12/11/2001 | US6330673 Determination of a best offset to detect an embedded pattern |
| 12/11/2001 | US6330335 Audio steganography |
| 12/06/2001 | DE10022862A1 Security-critical data transmission method in Internet, involves automatically combining character strings of data, received over respective transmission channels |
| 11/29/2001 | WO2001090880A1 Communication systems |
| 11/29/2001 | US20010047324 Decision analysis system and method |
| 11/29/2001 | CA2410434A1 Communication systems |
| 11/21/2001 | EP1156694A1 Radio communication device and radio communication method |
| 11/21/2001 | EP1155526A1 Device and method for producing an encoded audio and/or video data stream |
| 11/21/2001 | EP1155402A1 Audio synthesis using digital sampling of coded waveforms |
| 11/21/2001 | EP0672273B1 Method and apparatus for encryption having a feedback register with selectable taps |
| 11/21/2001 | CN1323111A Method for safety communication in multiple access system |
| 11/20/2001 | US6321201 Data security system for a database having multiple encryption levels applicable on a data element value level |
| 11/20/2001 | US6320872 Serially buffered medium translator |
| 11/15/2001 | US20010042037 Internet-based system for identification, measurement and ranking of investment portfolio management, and operation of a fund supermarket, including "best investor" managed funds |
| 11/14/2001 | CN1322430A Superposition of data over voice |
| 11/13/2001 | US6317835 Method and system for entry of encrypted and non-encrypted information on a touch screen |
| 11/13/2001 | US6317123 Progressively generating an output stream with realtime properties from a representation of the output stream which is not monotonic with regard to time |
| 11/08/2001 | WO2001084806A2 Method and system for adapting a telephone line modem for use on the power line |
| 11/08/2001 | WO2001084763A2 Method for transmitting payment information between a terminal and a third equipment |
| 11/08/2001 | WO2001084761A1 Method for securing communications between a terminal and an additional user equipment |
| 11/08/2001 | WO2001059962B1 Integrated beamforming/rake/mud cdma receiver architecture |
| 11/08/2001 | US20010039618 User authentication method, network system used for same and storage medium storing control program of same |
| 11/08/2001 | US20010039533 Tokenless biometric electronic debit and credit transactions |
| 11/08/2001 | US20010038695 Method for secure communication in multiple access systems |
| 11/07/2001 | EP1151563A2 Method and receiver for receiving a broadcast signal having encoded contents |
| 11/07/2001 | EP1151371A1 Tokenless biometric electronic check transactions |
| 11/06/2001 | US6314192 System, method, and product for information embedding using an ensemble of non-intersecting embedding generators |
| 11/01/2001 | WO2001082645A1 Arrangement and method for subscription to a cell broadcast service |
| 11/01/2001 | WO2001082518A1 Scrambler of wireless device |
| 11/01/2001 | WO2001082517A1 Frequency shift transceiver |
| 11/01/2001 | US20010037307 Signal transmission apparatus and signal transmission method |
| 11/01/2001 | US20010036222 Mobile radio telephone receiver |
| 10/25/2001 | US20010034689 Method and system of negotiating a transaction over a network |
| 10/25/2001 | US20010033674 System, method, and product for information embedding using an ensemble of non-intersecting embedding generators |
| 10/18/2001 | US20010032316 Method and system for voice guided secure entry of private data in a public setting |
| 10/18/2001 | US20010032187 Method for computer network operation providing basis for usage fees |
| 10/17/2001 | CN1073330C Mobile communiating system |
| 10/11/2001 | WO2001076136A1 Content data storage |
| 10/11/2001 | US20010029493 Tokenless biometric electronic check transactions |
| 10/11/2001 | US20010028675 Integrated beamforming/rake/mud CDMA receiver architecture |
| 10/11/2001 | DE10016133A1 Passive vehicle entry secure transmission method having transmitted signal and deformer passed with receiver deformation inverting detected signal. |
| 10/10/2001 | EP1142180A1 Method and system for entry of encrypted and non-encrypted information on a touch screen |
| 10/09/2001 | US6301360 Method of encoding information using a position-based encoding scheme |
| 10/04/2001 | WO2001073992A1 Multiuser receiver and communication system for multicode transmission |
| 10/04/2001 | DE10014648A1 Remote data transmission securing device used in e.g. credit card system, transmits image, data and sound with zero characters and transforms its transmission into original form at reception side |