| Patents for H04K 1 - Secret communication (16,771) |
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| 08/04/2009 | US7570953 Multicarrier communication system and methods for link adaptation using uniform bit loading and subcarrier puncturing |
| 08/04/2009 | US7570781 Embedded data in gaming objects for authentication and association of behavior information |
| 08/04/2009 | US7570768 Systems, structures, and methods for decrypting encrypted digital content when a rights management server has been decommissioned |
| 08/04/2009 | US7570764 Sequence number calculation and authentication in a communications system |
| 08/04/2009 | US7570761 Method and system for preventing unauthorized recording of media content in the iTunes™ environment |
| 08/04/2009 | US7570760 Apparatus and method for implementing a block cipher algorithm |
| 08/04/2009 | US7570759 System and method for secure encryption |
| 08/04/2009 | US7570710 In-phase and quadrature-phase signal amplitude and phase calibration |
| 08/04/2009 | US7570708 Serdes auto calibration and load balancing |
| 08/04/2009 | US7570707 Digital delay element for delay mismatch cancellation in wireless polar transmitters |
| 08/04/2009 | US7570697 Advanced MIMO interleaving |
| 08/04/2009 | US7570695 Method and adaptive bit interleaver for wideband systems using adaptive bit loading |
| 08/04/2009 | US7570694 Backward compatible multi-carrier transmission system |
| 08/04/2009 | US7570684 Method for joint time synchronization and frequency offset estimation in OFDM system and apparatus of the same |
| 08/04/2009 | US7570420 Systems and methods for transmitting quantum and classical signals over an optical network |
| 07/30/2009 | WO2004038533A9 Digital self identification and digital versatile safe card, e-commerce system |
| 07/30/2009 | US20090190760 Encryption and compression of data for storage |
| 07/30/2009 | US20090190759 QKD Arrangement |
| 07/30/2009 | US20090190755 Stegotext encoder and decoder |
| 07/30/2009 | US20090190754 System and methods for permitting open access to data objects and for securing data within the data objects |
| 07/30/2009 | US20090190682 System and method for maximum likelihood decoding in multiple out wireless communication systems |
| 07/30/2009 | US20090190672 Method and device to process a received analog signal and to extract digital data therefrom according to a plurality of protocols |
| 07/30/2009 | US20090190570 Methods and Device for Transmitting Data from a First Communication Device to a Second Communication Device |
| 07/29/2009 | EP2082517A2 Encrypted token transactions |
| 07/29/2009 | EP2082511A2 Tracking usage of portable media device |
| 07/29/2009 | EP1825432A4 System and method for trust management |
| 07/29/2009 | CN101496329A Real time, on the fly, distribution of pre-selected electronic content |
| 07/29/2009 | CN101496328A Remote control association methodology |
| 07/29/2009 | CN101496327A Rights management system for streamed multimedia content |
| 07/29/2009 | CN100521599C Encrypting/decrypting device, encrypting device and decrypting device |
| 07/28/2009 | US7568237 Access control list with convolution-weakened authorization |
| 07/28/2009 | US7568235 Controlling data access using security label components |
| 07/28/2009 | US7567721 Digital watermarking of low bit rate video |
| 07/28/2009 | US7567686 Hiding and detecting messages in media signals |
| 07/28/2009 | US7567672 Cryptographic communication system |
| 07/28/2009 | US7567670 Verification information for digital video signal |
| 07/28/2009 | US7567668 Calculating unit and method for performing an arithmetic operation with encrypted operands |
| 07/28/2009 | US7567639 Method and apparatus for generating preamble sequence for adaptive antenna system in orthogonal frequency division multiple access communication system |
| 07/28/2009 | US7567625 Apparatus and method for sub-carrier allocation in a multiple-input and multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) communication system |
| 07/28/2009 | US7567623 Differential space-time block coding apparatus with high transmission rate and method thereof |
| 07/28/2009 | US7567620 Data transmission scheme using channel group and DOCSIS implementation thereof |
| 07/23/2009 | US20090185692 System and Method of Retrieving a Watermark Within a Signal |
| 07/23/2009 | US20090185682 Systems and methods for improving high- bandwidth digital content protection (hdcp) authentication with digital video interface (dvi) or high-definition multimedia interface (hdmi) receiver devices |
| 07/23/2009 | US20090185632 Flexible ofdm/ofdma frame structure for communication systems |
| 07/23/2009 | US20090185476 Duration-shortened ofdm symbols |
| 07/22/2009 | EP2080303A2 Content management system |
| 07/22/2009 | EP1563621B1 Method and apparatus for RAKE combining based upon signal to interference plus noise ratio |
| 07/22/2009 | EP1497006A4 Authentication in a secure computerized gaming system |
| 07/22/2009 | CN101488818A Circuit for secure communication masked by chaos |
| 07/21/2009 | US7565698 Information-processing device |
| 07/21/2009 | US7565697 Systems and methods for preventing unauthorized use of digital content |
| 07/21/2009 | US7565676 Portable device for receiving media content |
| 07/21/2009 | US7565546 System, method and apparatus for secure digital content transmission |
| 07/21/2009 | US7565537 Secure key exchange with mutual authentication |
| 07/21/2009 | US7565533 Systems and methods for providing object integrity and dynamic permission grants |
| 07/21/2009 | US7565532 Secure file system server architecture and methods |
| 07/21/2009 | US7565529 Secure authentication and network management system for wireless LAN applications |
| 07/21/2009 | US7565325 Multi-site software license balancing |
| 07/21/2009 | US7565322 Systems and methods for serverless software licensing |
| 07/21/2009 | US7564992 Content identification through deriving identifiers from video, images and audio |
| 07/21/2009 | US7564975 Method of ciphering data and/or voice call to be transferred in mobile communication system and method of deactivating the ciphering |
| 07/21/2009 | US7564973 Digital watermark embedding device and digital watermark embedding method |
| 07/21/2009 | US7564972 Arithmetic device and encryption/decryption device |
| 07/21/2009 | US7564971 Apparatus and method for performing Montgomery type modular multiplication |
| 07/21/2009 | US7564922 RF transmitter for efficiently compensating output power variation due to temperature and process |
| 07/21/2009 | US7564912 Method and apparatus for channel state information generation in a DVB-T receiver |
| 07/21/2009 | US7564911 Communication system and transmitter-receiver for use therewith |
| 07/21/2009 | US7564910 Method and system for communications with reduced complexity receivers |
| 07/21/2009 | US7564909 Apparatus and method for detecting ranging signal in an orthogonal frequency division multiple access mobile communication system |
| 07/21/2009 | US7564908 Method and apparatus for encryption of over-the-air communications in a wireless communication system |
| 07/16/2009 | WO2009088761A1 Content protection of internet protocol (ip)-based television and video content delivered over an ip multimedia subsystem (ims)-based network |
| 07/16/2009 | WO2009088487A1 Merchant rate lookup |
| 07/16/2009 | US20090183234 Computer grid access management system |
| 07/16/2009 | US20090183008 Identity authentication and secured access systems, components, and methods |
| 07/16/2009 | US20090180616 Architecture for reconfigurable quantum key distribution networks based on entangled photons directed by a wavelength selective switch |
| 07/16/2009 | US20090180562 Multi-Carrier Communication Systems Employing Variable Symbol Rates And Number Of Carriers |
| 07/16/2009 | US20090180558 OFDM Channel Estimation |
| 07/16/2009 | US20090180152 Uv encryption via intelligent halftoning |
| 07/16/2009 | DE112007001726T5 Antifälschungsverpackung Anti-counterfeiting packaging |
| 07/16/2009 | CA2711254A1 Merchant rate lookup |
| 07/15/2009 | EP1774687A4 System and method for digital timing error correction in a communications system utilizing adaptive predistortion |
| 07/15/2009 | CN101485129A Enforced seat-based licensing |
| 07/15/2009 | CN101485128A Portable consumer device verification system |
| 07/14/2009 | US7562397 Method and system for facilitating search, selection, preview, purchase evaluation, offering for sale, distribution, and/or sale of digital content and enhancing the security thereof |
| 07/14/2009 | US7562348 Method and system for obtaining device services on a self-service financial transaction terminal |
| 07/14/2009 | US7562230 Data security |
| 07/14/2009 | US7562227 Method of authenticating a user on multiple devices using a procedural memory based password |
| 07/14/2009 | US7562220 System and method for programming an isolated computing environment |
| 07/14/2009 | US7562216 System and method for applying a file system security model to a query system |
| 07/14/2009 | US7561694 Session mobility for wireless devices |
| 07/14/2009 | US7561692 Method of authenticating mobile terminal |
| 07/14/2009 | US7561691 System and method for providing secured access to mobile devices |
| 07/14/2009 | US7561629 Multicarrier receiver and transmitter with delay correcting function |
| 07/14/2009 | US7561628 Apparatus and method for cell acquisition and downlink synchronization acquisition in a wireless communication system |
| 07/14/2009 | US7561028 Method and apparatus for providing a personal security system |
| 07/09/2009 | WO2009085415A1 Contactless prepaid product for transit fare collection |
| 07/09/2009 | WO2009085387A1 Methods and systems for cardholder initiated transactions |
| 07/09/2009 | WO2009085225A1 System for inserting markers for viewable content |
| 07/09/2009 | US20090178111 System and method for maintaining security in a distributed computer network |
| 07/09/2009 | US20090177585 Conditional access system for broadcast digital television |