Patents
Sitemap › H04 - Electric communication technique › H04K - Secret communication; Jamming of communication › H04K 1 - Secret communication
Patents for H04K 1 - Secret communication (16,771)
12/2003
12/10/2003CN1130867C Device and method for generating guasi-orthogonal code and spreading channel signals in mobile communication system
12/10/2003CN1130553C Process control transmitter with adaptive analog-to-digital converter
12/09/2003US6662166 Tokenless biometric electronic debit and credit transactions
12/04/2003WO2003100751A1 Data conversion device and data conversion method
12/04/2003WO2003058875A3 Method for encrypting digitized information
12/04/2003US20030225700 System and method for graphical rights expressions
12/04/2003US20030225699 Content rendering repository
12/04/2003US20030223578 Threshold encoding of frame buffers
12/02/2003US6658113 Apparatus and method for concealing data bursts in an analog scrambler using audio repetition
11/2003
11/27/2003WO2003015328A3 Method and device for encrypting a discrete signal and method and device for decrypting the same
11/27/2003US20030221117 Testing of an algorithm executed by an integrated circuit
11/27/2003US20030218534 Systems and methods for secure biometric authentication
11/26/2003EP1365317A1 Test of an algorithm executed by an integrated circuit
11/25/2003US6654887 Steganography decoding methods employing error information
11/25/2003US6654480 Audio appliance and monitoring device responsive to watermark data
11/25/2003US6654426 Correction of nonlinearity of I/Q modulator
11/20/2003WO2003096610A1 Encryption device and decryption device
11/20/2003WO2003096281A2 Dynamic security system
11/13/2003WO2003094368A1 Burst-mode combining of reverse path radio frequency signals
11/13/2003WO2003094077A1 System and method for specifying and processing legality expressions
11/13/2003WO2003094076A1 Rights management system using legality expression language
11/13/2003CA2484493A1 System and method for specifying and processing legality expressions
11/11/2003US6647149 Methods and apparatus for securely transmitting and processing digital image data
11/11/2003US6647129 Method and system for encoding image and audio content
11/06/2003WO2003092215A1 System in a digital wireless data communication network for arranging end-to-end encryption and corresponding terminal equipment
11/06/2003WO2003091844A2 Securitization of sales participation certificates
11/06/2003CA2483160A1 Securitization of sales participation certificates
11/05/2003EP1358750A2 Method and apparatus for partial encryption of contents
11/05/2003EP0829151B1 Method of encoding sequences consisting of figure-coded data units
11/05/2003CN1454417A Method for transmitting data by means of chaotic signals
10/2003
10/30/2003WO2003090127A1 Blind source separation utilizing a spatial fourth order cumulant matrix pencil
10/30/2003WO2002062008A8 Partial encryption of assembled bitstreams
10/30/2003US20030204473 Securitization of sales participation certificates
10/30/2003US20030204459 Securitization of sales participation certificates
10/30/2003US20030204380 Blind source separation utilizing a spatial fourth order cumulant matrix pencil
10/30/2003US20030202613 Burst-mode combining of reverse path radio frequency signals
10/29/2003EP1356628A1 Method for certifying and unifying delivery of electronic packages
10/29/2003CN1452824A Method and system for secure transmission of data
10/29/2003CN1452418A Method for sending cipher information to mobile terminal in mobile communication system
10/23/2003US20030198299 Multicarrier modulation with data dependent frequency-domain redundancy
10/22/2003EP1354440A1 Delegated administration of information in a database directory
10/22/2003EP1290823A4 Method and apparatus for distributing enforceable property rights
10/22/2003CN1451212A Method and apparatus for encrypting transmissions in a communication system
10/16/2003WO2003085871A1 Arrangements and methods for secure data transmission
10/16/2003WO2003085870A1 Method and apparatus to maintain encryption synchronization in a multi-modulation tdm system
10/16/2003US20030194088 Method for transmitting data among components of the system electronics of mobile systems, and such components
10/15/2003CN1124718C Decryption of retransmitted data in an encrypted communication system
10/09/2003WO2003084120A1 Circuit arrangement for securing information exchange between a transmitter and a receiver
10/09/2003WO2003084097A1 Transmit processing using receiver functions
10/09/2003CA2480533A1 Transmit processing using receiver functions
10/08/2003EP1351246A2 System and method for copy protection for digital signals
10/08/2003EP1351245A2 System and method for copy protection for digital signals
10/08/2003EP1351244A2 System and method for copy protection for digital signals
10/08/2003EP1350384A2 Methods and apparatus for securely transmitting and processing digital image data
10/08/2003CN2579091Y Customer device for data test by utilizing array processing
10/08/2003CN1447558A Quantum encryption method for realizing safety communication
10/02/2003WO2003081401A2 Method and apparatus for dynamic personal identification number management
10/02/2003US20030188148 Method and apparatus to maintain encryption synchronization in a multi-modulation TDM system
10/02/2003US20030185192 Transmit processing using receiver functions
09/2003
09/30/2003US6628701 Method and apparatus for reducing spread spectrum noise
09/25/2003WO2003079270A1 Method and apparatus for processing usage rights expressions
09/25/2003WO2003079269A1 Rights expression profile system and method using templates and profiles
09/25/2003WO2003079196A2 System and method of secure garbage collection on a mobile device
09/25/2003WO2003079156A2 System and method for graphical rights expressions
09/25/2003WO2003077955A1 System and method for expressing usage rights using modulated signals
09/25/2003CA2479526A1 System and method of secure garbage collection on a mobile device
09/24/2003EP1346501A2 Multiple format secure voice apparatus for communication handsets
09/24/2003CN1444811A Data transmission method, user equipment and GPRS/EDGE radio access network
09/23/2003US6624773 Data encryption and signal scrambling using programmable data conversion arrays
09/18/2003US20030177370 Dynamic security system
09/18/2003US20030177369 Data file processing apparatus, remote control apparatus for data file processing apparatus and control method for data file processing apparatus
09/18/2003US20030177367 Controlling access to a disk drive in a computer system running multiple operating systems
09/18/2003US20030177366 Method and apparatus for dynamic personal identification number management
09/18/2003US20030177354 Methods and apparatus for kernel mode encryption of computer telephony
09/18/2003US20030174860 Encoding and decoding methods in which decryption data is conveyed steganographically within audio or visual content
09/17/2003EP1344356A2 Method and apparatus for interfacing to a radio frequency unit in a bluetooth communication system
09/17/2003EP1344339A1 Multiple access frequency hopping network with interference avoidance
09/17/2003EP0800745B1 Time-shifted conditional access
09/10/2003EP1342333A2 Partial encryption of assembled bitstreams
09/10/2003CN1441385A Storage card
09/09/2003US6617927 High frequency power amplifier module, and wireless communications system
09/04/2003WO2003073689A1 Communication apparatus and communication system
09/04/2003WO2003073673A1 Analog scrambler
09/04/2003US20030165239 Decryption system for encrypted audio
09/03/2003EP1341071A2 Memory card
09/03/2003CN1120643C Content data conversion arrangement and method
09/03/2003CN1120593C Single-wire chaotic secret communication system
08/2003
08/28/2003WO2003071569A2 Analytical instruments using a pseudorandom array of sample sources, such as a micro-machined mass spectrometer or monochromator
08/28/2003US20030163717 Memory card
08/28/2003US20030161392 Method and apparatus for signal transmission and reception
08/28/2003CA2475132A1 Analytical instruments using a pseudorandom array of sample sources, such as a micro-machined mass spectrometer or monochromator
08/27/2003CN1438772A Security communication system of laser optical multiple signals and method thereof
08/27/2003CN1119899C Method and equipment for video signal ciphering and deciphering
08/20/2003EP1084542A4 System and method for secured network access
08/20/2003CN2567878Y CDMA and FDMA hybrid satellite communication device
08/20/2003CN1437795A Signal peak reduction circuit for non-constant envelope modulation signals
08/20/2003CN1119009C Safety switch-in telephone extension system
08/20/2003CN1118964C Control method and system for pilot measurement request order (PMRO)
08/20/2003CN1118961C Method and apparatus for tracking communication signal in radio communication system
08/14/2003WO2003067797A1 Secure visual message communication method and device
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