| Patents for H04K 1 - Secret communication (16,771) |
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| 10/20/2009 | US7606367 Quantum cryptography with fewer random numbers |
| 10/20/2009 | US7606366 Apparatus and method for embedding and extracting information in analog signals using distributed signal features and replica modulation |
| 10/20/2009 | US7606365 Encryption/decryption system and key scheduler with variable key length |
| 10/20/2009 | US7606363 System and method for context switching of a cryptographic engine |
| 10/20/2009 | US7606324 Digital pre-distortion technique using non-linear filters |
| 10/20/2009 | US7606323 Carrier leak reduction transmitter circuit |
| 10/20/2009 | US7606322 Digital pre-distortion technique using nonlinear filters |
| 10/20/2009 | US7606317 Channel optimization system |
| 10/20/2009 | US7606207 User equipment and base station performing data detection using a scalar array |
| 10/20/2009 | CA2197640C Multiple access coding using bent sequences for mobile radio communications |
| 10/15/2009 | US20090259858 Method and apparatus for the secure storage of audio signals |
| 10/15/2009 | US20090259591 Information Rights Management |
| 10/15/2009 | US20090257592 Content transmission system, communication device, and content transmission method |
| 10/15/2009 | US20090257521 Method and System for Channel Estimation in a Spatial Multiplexing MIMO System |
| 10/15/2009 | US20090257519 Pilot pattern design for high-rank MIMO OFDMA systems |
| 10/14/2009 | CN101558591A 内容管理系统 Content Management System |
| 10/14/2009 | CN101558590A QKD system detector autocalibration based on bit-error rate |
| 10/14/2009 | CN100551139C Method for introducing friend by using one-key service |
| 10/13/2009 | US7603703 Method and system for controlled distribution of application code and content data within a computer network |
| 10/13/2009 | US7603702 Method and device for identifying user-selected equipment |
| 10/13/2009 | US7603697 Method and system for securely delivering authentication-related data |
| 10/13/2009 | US7602918 Method for distributing security keys during hand-off in a wireless communication system |
| 10/13/2009 | US7602917 Method of ciphering data transmission in a radio system |
| 10/13/2009 | US7602908 System and method for using a streaming protocol |
| 10/13/2009 | US7602907 Elliptic curve point multiplication |
| 10/13/2009 | US7602905 Processes, circuits, devices, and systems for encryption and decryption and other purposes, and processes of making |
| 10/13/2009 | US7602870 Symbol timing estimation in communication systems |
| 10/13/2009 | US7602854 Method of receiving of OFDM signal having repetitive preamble signal |
| 10/13/2009 | US7602853 Method and apparatus for channel estimation |
| 10/08/2009 | US20090254482 Time-based licenses |
| 10/08/2009 | US20090252336 Method for generating downlink frame, and method for searching cell |
| 10/08/2009 | US20090252335 Method for generating downlink frame, and method for searching cell |
| 10/08/2009 | US20090252334 Method for generating downlink frame, and method for searching cell |
| 10/08/2009 | US20090252333 Method for generating downlink frame, and method for searching cell |
| 10/08/2009 | US20090252332 Method for generating downlink frame, and method for searching cell |
| 10/08/2009 | US20090252257 Mimo transmitter and method for transmitting an ofdm symbol in accordance with an ieee 802.11 communication standard over a plurality of spatial channels |
| 10/08/2009 | US20090252244 Wireless communication device, wireless communication method, program and wireless comunication system |
| 10/08/2009 | US20090252243 Method and apparatus for transmitting signals in a multi-hop wireless communication system |
| 10/08/2009 | US20090252242 Apparatus and method for detecting signal based on lattice reduction to support different coding scheme for each stream in multiple input multiple output wireless communication system |
| 10/08/2009 | US20090252241 Spectral shaping for multiband OFDM transmitters with time spreading |
| 10/08/2009 | US20090252236 Retransmitting method and transmitting method in multi-antenna transmission |
| 10/08/2009 | US20090252028 Apparatus and method for controlling ranging of mobile terminals in wireless communication system |
| 10/08/2009 | DE102008017363A1 Command post radio for use in military field, has transmitting and receiving stations in specific range, and transmitters and receivers equipped with electronically controllable antenna that is controlled by administrative processor |
| 10/07/2009 | EP2106582A2 Method and system for securely protecting data during software application usage |
| 10/07/2009 | CN101554005A Method and system for processing micropayment transactions |
| 10/07/2009 | CN101554004A Methods and apparatus for content scrambling in a communications system |
| 10/06/2009 | US7600255 Preventing network denial of service attacks using an accumulated proof-of-work approach |
| 10/06/2009 | US7600118 Method and apparatus for augmenting authentication in a cryptographic system |
| 10/06/2009 | US7599890 Content data storage |
| 10/06/2009 | US7599515 Wireless communication method and apparatus for generating, watermarking and securely transmitting content |
| 10/06/2009 | US7599492 Fast cryptographic key recovery system and method |
| 10/06/2009 | US7599491 Method for strengthening the implementation of ECDSA against power analysis |
| 10/06/2009 | US7599489 Accelerating cryptographic hash computations |
| 10/06/2009 | US7599440 Downlink control channel allocation method in mobile communication system |
| 10/06/2009 | US7599282 Wide frequency offset correction using encoded interburst phase differences |
| 10/01/2009 | US20090249073 Apparatus and method for group session key and establishment using a certified migration key |
| 10/01/2009 | US20090245518 Secure communications in computer cluster systems |
| 10/01/2009 | US20090245419 Method and apparatus for improving power amplifier efficiency in wireless communication systems having high peak to average power ratios |
| 10/01/2009 | US20090245405 Mimo transmitter and method for transmitting a group of sequential ofdm symbols in accordance with an ieee 802.16 communication standard |
| 10/01/2009 | US20090245397 System and method for communicating data using efficient fast fourier transform (fft) for orthogonal frequency division multiplexing (ofdm) demodulation |
| 10/01/2009 | US20090245209 Apparatus and method for allocating ovsf codes and i/q channels for reducing peak-to-average power ratio in transmitting data via enhanced up-link dedicated channels in wcdma systems |
| 10/01/2009 | US20090245208 Method and apparatus for data-centric multiplexing and asynchronous command interface to the encoder and multiplexer modules |
| 10/01/2009 | US20090245090 Broadband Pilot Channel Estimation Using A Reduced Order FFT and a Hardware Interpolator |
| 09/30/2009 | EP1582024B1 System, apparatus and method for replacing a cryptographic key |
| 09/30/2009 | CN101548497A Transaction payables processing system and approach |
| 09/30/2009 | CN101548496A Method and apparatus for biometric identification |
| 09/30/2009 | CN100545824C System and method for session provision |
| 09/29/2009 | US7596703 Hidden data backup and retrieval for a secure device |
| 09/29/2009 | US7596700 Method and system for establishing trusting environment for sharing data between mutually mistrusting entities |
| 09/29/2009 | US7596689 Secure and reliable document delivery using routing lists |
| 09/29/2009 | US7596270 Method of shuffling text in an Asian document image |
| 09/29/2009 | US7596225 Method for refreshing a pairwise master key |
| 09/29/2009 | US7596224 Method and system for secure call alert |
| 09/29/2009 | US7596184 Apparatus, system, and method for amplitude-phase synchronization in polar transmitter |
| 09/29/2009 | US7596181 Apparatus and method for frequency synchronization in OFDM system |
| 09/24/2009 | WO2009117171A1 Systems and methods of identification based on biometric parameters |
| 09/24/2009 | WO2009117010A1 Method and system for facilitating a negotiation |
| 09/24/2009 | WO2008114144A3 Blocking of unlicensed audio content in video files on a video hosting website |
| 09/24/2009 | US20090241193 Enhanced Computer Intrusion Detection Methods And Systems |
| 09/24/2009 | US20090241185 Secure password entry |
| 09/24/2009 | US20090240958 System and method for generating a secure state indicator on a display |
| 09/24/2009 | US20090240952 Method and system for decryption of file characteristics of .ZIP files |
| 09/24/2009 | US20090240949 Identity authentication based on keystroke latencies using a genetic adaptive neural network |
| 09/24/2009 | US20090240945 Anticounterfeiting means for optical communication components |
| 09/24/2009 | US20090240940 Position based enhanced security of wireless communications |
| 09/24/2009 | US20090239468 Wireless mass storage flash memory |
| 09/24/2009 | US20090238366 Random access method for improving scrambling efficiency |
| 09/24/2009 | US20090238299 Detecting the Number of Transmit Antennas in Wireless Communication Systems |
| 09/24/2009 | US20090238296 Multiple access system and method for 60 ghz wireless communications system |
| 09/24/2009 | US20090238295 Communicating data using wideband communications |
| 09/24/2009 | US20090238292 Multiple-input multiple-output communication system control method and apparatus |
| 09/24/2009 | US20090238289 Channel estimation in wireless systems with impulsive interference |
| 09/24/2009 | US20090237418 Useability features in on-line delivery of applications |
| 09/24/2009 | CA2719086A1 Method and system for facilitating a negotiation |
| 09/24/2009 | CA2715019A1 Systems and methods of identification based on biometric parameters |
| 09/23/2009 | EP2103019A1 Contactless transaction |
| 09/23/2009 | CN100544338C Apparatus and method for detecting echo in the frequency domain |
| 09/22/2009 | USRE40919 Methods for surveying dissemination of proprietary empirical data |
| 09/22/2009 | US7594261 Cryptographic applications of the Cartier pairing |
| 09/22/2009 | US7594256 Remote interface for policy decisions governing access control |