| Patents for H04K 1 - Secret communication (16,771) |
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| 04/02/2013 | US8411766 System and method for utilizing spectral resources in wireless communications |
| 03/28/2013 | US20130077788 Selective Downlink Data Encryption System for Satellites |
| 03/28/2013 | US20130077779 Enabling wireless clients for low-power operation when clients require control messages from external sources for communication |
| 03/27/2013 | CN103001764A Method and system for securing scrambled data |
| 03/27/2013 | CN101278510B System and method for digital rights management using advanced copy with issue rights, and managed copy tokens |
| 03/26/2013 | US8407758 Network security appliance |
| 03/26/2013 | US8407484 Flash memory distribution of digital content |
| 03/26/2013 | US8406735 Method for pairing electronic equipment in a wireless network system |
| 03/26/2013 | US8406459 Method and apparatus to mark a document using a combination between guilloches and watermarking, method and apparatus to read previous combination |
| 03/26/2013 | US8406425 Method and apparatus for minimizing co-channel interference |
| 03/26/2013 | US8406422 Cryptographic module management apparatus, method, and program |
| 03/26/2013 | US8406331 Method for signaling the status of a subcarrier in a MC network and a method for adaptively allocating the subcarriers in a MC network |
| 03/26/2013 | US8406328 Method and apparatus for feedback in closed loop transmitting |
| 03/26/2013 | US8406326 Exploiting channel time correlation to reduce channel state information feedback bitrate |
| 03/26/2013 | US8406325 Methods and receivers of carrier frequency offset detection |
| 03/26/2013 | US8406324 Digital transmission and reception devices for transmitting and receiving streams, and processing methods thereof |
| 03/26/2013 | US8406323 Orthogonal frequency division multiplexing using subsymbol processing |
| 03/26/2013 | US8406321 Digital signal transmission method, transmitting apparatus, and receiving apparatus |
| 03/26/2013 | US8406319 Channel estimator with high noise suppression and low interpolation error for OFDM systems |
| 03/26/2013 | US8406318 System and method for ask OFDM transmission and reception |
| 03/26/2013 | US8406279 System and method for pilot design for data transmitted in wireless networks |
| 03/26/2013 | US8406185 Method and apparatus for transmitting pilot in a wireless communication system |
| 03/20/2013 | EP2569884A1 Format-preserving encryption via rotating block encryption |
| 03/20/2013 | CN102983900A Reception apparatus |
| 03/20/2013 | CN101573904B System and method for controlled viral distribution of digital content in a social network |
| 03/20/2013 | CN101027865B System and method for differential IQ delay compensation in a communications system utilizing adaptive AQM compensation |
| 03/19/2013 | US8402518 Secure management of authentication information |
| 03/19/2013 | US8402281 Data security system for a database |
| 03/19/2013 | US8401181 Segment deduplication system with encryption of segments |
| 03/19/2013 | US8401180 Non-linear data converter, encoder and decoder |
| 03/19/2013 | US8401114 Mobile telecommunication device and ramping data transmitting method thereof |
| 03/19/2013 | US8401109 Methods for sending and receiving a multicarrier signal comprising a preamble comprising data elements, corresponding devices and computer products |
| 03/19/2013 | US8401100 Transmission apparatus and transmission method |
| 03/19/2013 | US8401099 Method of transmitting control signal in wireless communication system |
| 03/19/2013 | US8401098 Digital differential signal transmitter for low supply voltage |
| 03/19/2013 | US8401097 Apparatus and method for removing common phase error in a DVB-T/H receiver |
| 03/19/2013 | US8401096 Communication system and method of operations therefor |
| 03/19/2013 | US8401095 Apparatus for transmitting data using carriers and method thereof |
| 03/19/2013 | US8401094 MIMO wireless communication method and apparatus for transmitting and decoding resource block structures based on a dedicated reference signal mode |
| 03/14/2013 | US20130067555 Method and Apparatus for Trust-Based, Fine-Grained Rate Limiting of Network Requests |
| 03/14/2013 | US20130064370 Distribution of portions of content |
| 03/14/2013 | US20130064364 Secure data parser method and system |
| 03/13/2013 | CN101534165B Chaotic neural network encryption communication circuit |
| 03/13/2013 | CN101496337B Hard drive authentication |
| 03/13/2013 | CN101438526B Advertisement rotation |
| 03/12/2013 | US8397076 System and method for remote reset of password and encryption key |
| 03/12/2013 | US8396222 Key distribution system |
| 03/12/2013 | US8396211 System and method for dynamic modification of allowable electronic message properties |
| 03/12/2013 | US8396149 Adaptive signal decompression |
| 03/12/2013 | US8396147 MIMO transmitter for transmitting a group of sequential OFDM symbols using a plurality of antennas |
| 03/12/2013 | US8396146 Wireless communication modem |
| 03/12/2013 | US8396145 Method and device for notching the transmission band of an analog signal, in particular for a detect and avoid (DAA) operation mode of an MB-OFDM system |
| 03/12/2013 | US8396142 System, method, and computer-readable medium for multilevel shaping for wireless communication systems |
| 03/12/2013 | US8396141 Efficient cell selection |
| 03/12/2013 | US8396034 Method for determining cell identity in wireless communication system and apparatus therefor |
| 03/12/2013 | US8396030 Selecting between normal and virtual dual layer ACK/NACK |
| 03/12/2013 | US8395707 Signal processing apparatus and methods |
| 03/07/2013 | WO2013031476A1 Transmission device, reception device and transmission/reception system |
| 03/07/2013 | US20130058481 Fuzzy protection of visual content |
| 03/06/2013 | CN1653463B Method and apparatus for processing usage rights expressions |
| 03/05/2013 | US8392711 Staged establishment of secure strings of symbols |
| 03/05/2013 | US8391541 Steganographic encoding and detecting for video signals |
| 03/05/2013 | US8391490 Method providing the means for recognizing the origin and/or content of an RF signal |
| 03/05/2013 | US8391489 Processor system |
| 03/05/2013 | US8391488 Method and apparatus for using navigation signal information for geoencryption to enhance security |
| 03/05/2013 | US8391485 Stealth message transmission in a network |
| 03/05/2013 | US8391477 Cryptographic device having tamper resistance to power analysis attack |
| 03/05/2013 | US8391476 Masking method of defending differential power analysis attack in seed encryption algorithm |
| 03/05/2013 | US8391475 Method and apparatus for advanced encryption standard (AES) block cipher |
| 03/05/2013 | US8391405 Symbol mapping method for repetition channel coding |
| 03/05/2013 | US8391387 Multiple transmit antenna interleaver design |
| 03/05/2013 | US8391386 Communication method and radio transmitter |
| 03/05/2013 | US8391383 Dynamic tone grouping and encoding for multi-carrier quadrature amplitude in OFDM |
| 03/05/2013 | US8391380 Method of transmitting data using repetition coding |
| 03/05/2013 | US8391378 Metric computation for lowering complexity of MIMO detection algorithms |
| 03/05/2013 | US8391264 Mobile device handoff while maintaining connectivity with multiple access points |
| 03/05/2013 | US8391131 Method for processing the random access transmission in the frequency domain |
| 03/05/2013 | US8391128 Mobile communication system, receiver and method |
| 02/28/2013 | US20130054416 Method and system for automatically publishing content |
| 02/28/2013 | US20130051556 System for encrypting data with an error correction code |
| 02/27/2013 | CN1856953B Method and system for secure upstream transmission in passive optical networks |
| 02/27/2013 | CN102948095A Modulation of signals |
| 02/26/2013 | US8386803 System and method for data obfuscation based on discrete logarithm properties |
| 02/26/2013 | US8386791 Secure data processing method based particularly on a cryptographic algorithm |
| 02/26/2013 | US8386790 Method of using ECDSA with winternitz one time signature |
| 02/26/2013 | US8386775 Tolerant key verification method |
| 02/26/2013 | US8385550 System and method for secure wireless multi-hop network formation |
| 02/26/2013 | US8385549 Fast authentication between heterogeneous wireless networks |
| 02/26/2013 | US8385541 Method of performing elliptic polynomial cryptography with elliptic polynomial hopping |
| 02/26/2013 | US8385540 Block cipher algorithm based encryption processing method |
| 02/26/2013 | US8385466 Transmitting a signal from a power amplifier |
| 02/26/2013 | US8385464 Methods and apparatus for reducing average-to-minimum power ratio in communications signals |
| 02/26/2013 | US8385444 Discrete digital receiver with blocker circuit |
| 02/26/2013 | US8385443 Constructing very high throughput long training field sequences |
| 02/26/2013 | US8385439 Polarization mode dispersion compensation in multilevel coded-modulation schemes using blast algorithm and iterative polarization cancellation |
| 02/26/2013 | US8385438 System and method for adaptive synchronization |
| 02/26/2013 | US8385437 Transport stream generating device, transmitting device, receiving device, and a digital broadcast system having the same, and method thereof |
| 02/26/2013 | US8385436 Apparatus and method for modifying transmissions on specified wireless channels to reduce interference with higher-priority transmitters |
| 02/26/2013 | US8385435 Measuring interference and noise power using non-content burst periods |
| 02/26/2013 | US8385434 Process of synchronization in the time and frequency domain of multiple equipments in a transmission system with OFDM modulation |