Patents
Sitemap › H04 - Electric communication technique › H04K - Secret communication; Jamming of communication › H04K 1 - Secret communication
Patents for H04K 1 - Secret communication (16,771)
08/2003
08/14/2003US20030152227 Method and apparatus for encryption using partial information
08/14/2003US20030152226 Slice mask and moat pattern partial encryption
08/13/2003EP1335574A1 Information transmitting/receiving system, information transmitting/receiving method, and handwritten information compressing method used for them
08/13/2003EP1335516A2 Method and system for encryption of optical signals
08/07/2003US20030147533 Method and system for encryption of optical signals
07/2003
07/31/2003US20030145210 Method, system, program, and data structure for implementing a locking mechanism for a shared resource
07/31/2003US20030144869 Extensible rights expression processing system
07/30/2003CN1433616A Method and apparatus for implementing leaf node proxy in network
07/24/2003WO2003060674A1 Secure data input dialogue using visual cryptography
07/23/2003CN1431793A Cascading information encryption system by complemented capabilities of chaos encryption and traditional encryption
07/17/2003WO2003058875A2 Method for encrypting digitized information
07/17/2003US20030135813 Apparatus and method for saturating decoder values
07/17/2003US20030133570 Star pattern partial encryption
07/17/2003US20030133568 Programmable data encryption engine for advanced encryption standard algorithm
07/17/2003US20030133514 Apparatus and method for decode arbitration in a multi-stream multimedia system
07/16/2003EP1012550B1 Process control transmitter with adaptive analog-to-digital converter
07/16/2003CN1430834A Content data storage
07/15/2003US6594362 Radio data transmission apparatus
07/10/2003US20030131231 Secured radio communications system, method, and computer program product
07/10/2003US20030128845 Method of scrambling a signal
07/09/2003CN1428962A 数据传送系统 Data transmission system
07/08/2003US6590997 Files and methods employing common information in both header and steganographic embedding
07/03/2003US20030126089 Conversation method, device, program and computer-readable recording medium on which conversation program is recorded
07/03/2003US20030125015 Data transfer system
07/03/2003US20030123560 Method to mitigate effects of ISDN off/on transitions in ADSL
07/02/2003EP1324557A1 ADSL bit loading scheme with excess noise margin
07/02/2003EP1324530A2 Data transfer system using bit inversion
07/02/2003EP1323161A2 Distribution of content
07/02/2003CA2748539A1 Slice mask and moat pattern partial encryption
07/02/2003CA2748417A1 Slice mask and moat pattern partial encryption
07/02/2003CA2748412A1 Slice mask and moat pattern partial encryption
07/02/2003CA2746782A1 Star pattern partial encryption
07/02/2003CA2746625A1 Star pattern partial encryption
07/02/2003CA2746401A1 Star pattern partial encryption
07/01/2003US6587821 Methods for decoding watermark data from audio, and controlling audio devices in accordance therewith
06/2003
06/26/2003US20030118186 Apparatus for and method for cipher check of an analog scrambler
06/25/2003EP1320953A1 Method and apparatus for access authentication entity
06/25/2003EP1175675B1 Method and apparatus for processing digitally encoded audio data
06/24/2003US6584563 User support system for cryptographic communication in network systems
06/19/2003WO2003050965A1 Providing a partially encrypted data packet in a spread spectrum signal
06/19/2003US20030115451 Method and apparatus for the secure storage of audio signals
06/19/2003US20030115144 Digital work structure
06/19/2003US20030112973 Signal processing method and apparatus, and code string generating method and apparatus
06/18/2003EP0839417B1 Decryption of retransmitted data in an encrypted communication system
06/17/2003US6581042 Tokenless biometric electronic check transactions
06/17/2003US6580809 Quantization-based data hiding employing calibration and locally adaptive quantization
06/12/2003WO2003048892A2 Access, identity, and ticketing system for providing multiple access methods for smart devices
06/12/2003US20030107584 Security system and method for visual display
06/11/2003EP1317833A1 Apparatus and methods for sample selection and reuse of rake fingers in spread spectrum systems
06/11/2003EP1317815A1 Data transmission method, user equipment and gprs/edge radio access network
06/11/2003CN1423868A Multiuser receiver and communication system for multicode transmission
06/10/2003US6577732 Hierarchical encryption technique for dense wavelength division multiplexed systems using a wavelength bus architecture
06/05/2003WO2003023982A3 Transmission security for wireless lans
06/05/2003US20030103626 Programmable data encryption engine
06/05/2003US20030103554 Providing a partially encrypted data packet in a spread spectrum signal
06/04/2003EP1316811A2 Staggered pulse acquisition method and apparatus
06/04/2003EP1316168A1 Method and system for using electronic communications for an electronic contact
06/04/2003EP1040439A4 Portable 1-way wireless financial messaging unit
05/2003
05/30/2003WO2003045106A1 Encrypting a pseudo-noise (pn) sequence before spreading a communication signal
05/30/2003WO2003019449A3 Digitally watermarking checks and other value documents
05/29/2003US20030101144 System and method for detecting repetitions in a multimedia stream
05/29/2003US20030099356 Scrambler of wireless device
05/28/2003CN1420459A System and method for managing and protecting transaction information by third party
05/28/2003CN1110201C Method and apparatus for scrambling and descrambling of video signals
05/22/2003WO2003043243A1 Transmission method, transmission apparatus, and reception apparatus
05/22/2003WO2003043242A1 Reception apparatus
05/22/2003WO2003043236A1 Array processing for linear system solutions
05/22/2003WO2003043222A1 Communication method and radio communication apparatus
05/22/2003WO2003042927A2 Using real random number generator as proof of time
05/22/2003US20030095662 System and method for encrypting spread spectrum carrier
05/22/2003CA2466684A1 Array processing for linear system solutions
05/21/2003EP1142180A4 Method and system for entry of encrypted and non-encrypted information on a touch screen
05/21/2003CN1109423C Permutation code encryption and decryptment method and its encryption and decryptment equipment
05/20/2003US6567780 Audio with hidden in-band digital data
05/20/2003US6567535 Steganographic system with changing operations
05/20/2003US6567534 Methods and systems for watermark processing of line art images
05/15/2003US20030091189 Arrangement for embedding subliminal data in imaging
05/15/2003US20030091184 System and method for real-time secure communication based on multi-level transform and encryption
05/15/2003US20030091104 Method and apparatus for reducing spread spectrum noise
05/15/2003US20030091094 Using real random number generator as proof of time
05/15/2003US20030091007 User equipment and base station performing data detection using a scalar array
05/08/2003US20030088517 System and method for controlling access and use of private information
05/07/2003EP1307996A1 A method and system for secure transmission of data
05/07/2003CN1416240A Method and device for coding and decoding asynchronous transferred bit stream
05/06/2003US6560350 Methods for detecting alteration of audio
05/06/2003US6560349 Audio monitoring using steganographic information
05/01/2003WO2003036976A1 System and method for real-time secure communication based on multi-level transform and encryption
05/01/2003WO2003036856A1 Method and system for secure key exchange
05/01/2003US20030081780 Digital entroping for digital audio reproductions
05/01/2003US20030081705 Compensation for non-linear distortion in a modem receiver
04/2003
04/29/2003US6557103 Spread spectrum image steganography
04/24/2003US20030078896 Systems, methods and computer program products facilitating automated confirmations and third-party verifications
04/24/2003US20030076959 Method and system for secure key exchange
04/23/2003EP1304824A1 Method for transmitting data by means of chaotic signals
04/17/2003WO2003005627A3 Mobile application access control list security system
04/17/2003US20030072468 Curve fitting for synchronizing readers of hidden auxiliary data
04/16/2003CN1411207A Communication apparatus
04/10/2003US20030070077 Data security system and method with parsing and dispersion techniques
04/03/2003US20030065799 Communication device
04/03/2003US20030063747 Apparatus and method for embedding and extracting information in analog signals using distributed signal features and replica modulation
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