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7624283 |
Protocol for trusted platform module recovery through context checkpointing
A computer implemented method for recovering a partition context in the event of a system or hardware device failure. Upon receiving a command from a partition to modify context data in a trusted...
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7613298 |
System and process for adaptive and progressive scrambling of video streams
A process for distributing digital video sequences in accordance with a nominal stream format including a succession of frames, each frame including at least one digital block regrouping a...
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7602917 |
Method of ciphering data transmission in a radio system
The invention relates to a method of ciphering data transmission in a radio system, and to a user equipment using the method, and to a radio network subsystem using the method. The method includes...
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7587591 |
Secure transport of multicast traffic
Secure tunneled multicast transmission and reception through a network is provided. A join request may be received from a second tunnel endpoint, the join request indicating a multicast group to be...
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7536014 |
Apparatus and method for generating scrambling code in UMTS mobile communication system
A scrambling code generating apparatus of a downlink transmitter in a UMTS mobile communication system, which uses one primary scrambling code for separation of base stations and multiple secondary...
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7478246 |
Method for providing a scalable trusted platform module in a hypervisor environment
A method is described for implementing a trusted computing environment within a data processing system where the data processing system includes a single hardware trusted platform module (TPM)....
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7415043 |
Code division multiple access (CDMA) method and apparatus for protecting and authenticating wirelessly transmitted digital information
A spread spectrum method and apparatus for protecting and authenticating wirelessly transmitted digital information using numerous techniques. The apparatus may be a wireless code division multiple...
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7356141 |
Baud rate modulation encoding/decoding method and device for remote controller
A encoding/decoding method and device for a remote controller utilizing a baud rate to encrypt data for transmission. The encoding device includes an encoder encoding an identification code into an...
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RE39759 |
Time domain radio transmission system
A time domain communications system wherein a broadband of time-spaced signals, essentially monocycle-like signals, are derived from applying stepped-in-amplitude signals to a broadband antenna, in...
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7239666 |
Communication system
A communication system that can satisfactorily communicate with a mobile station by a transmitter and receiver of a simple arrangement wherein a plurality of carriers having different frequencies...
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7111168 |
Digital watermarking systems
A variety of systems responsive to watermarked documents are detailed. In one, watermarking is employed to facilitate secure online transactions. In another, a system for exchanging data is...
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7103085 |
Wireless communications system with secondary synchronization code based on values in primary synchronization code
A wireless communication system. The system comprises transmitter circuitry (BST 1 ), the transmitter circuitry comprising encoder circuitry ( 50 ) for transmitting a plurality of frames (FR). Each...
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7065286 |
Method and apparatus for testing optical fiber by using biorthogonal codes and Moore-Penrose generalized inverses
Disclosed is a method and an apparatus for testing an optical fiber by using a biorthogonal codes and a Moore-Penrose inverse matrix. The method includes the steps of: (a) coding 2n optical pulses...
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6980657 |
Communications system using chaotic synchronized circuits
A chaotic communication system employs transmitting and receiving chaotic oscillating circuits. In an embodiment of the invention employing a Chua circuit as the basic chaotic circuit, the...
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6701363 |
Method, computer program product, and system for deriving web transaction performance metrics
The present invention comprises a method of relating characteristics gleaned by monitoring application transaction flows (and the decomposition thereof) to produce performance metrics useful to...
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6683955 |
Method for receiving a secured transmission of information through a plurality of frequency orthogonal subchannels
One embodiment of the present invention is a method for receiving a secured transmission of information in an ADSL environment using a DMT modulation technique. The order of the frequency...
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6674359 |
Method of identifying several transponders
Transponders present in an interrogation zone can be identified by an interrogator by it sending an RF interrogation signal into the interrogation zone, the RF interrogation signal containing a...
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6580747 |
Method and generator for generating orthogonal spreading code in CDMA radio system
The invention relates to a method and a generator for generating a short orthogonal spreading code in CDMA radio system. The method includes obtaining control data the length, the running number...
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6501841 |
Method for providing security for a transmission of information through a plurality of frequency orthogonal subchannels
One embodiment of the present invention is a method for providing security for a transmission of information in an ADSL environment using a DMT modulation technique. The order of the frequency...
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RE37802 |
Multicode direct sequence spread spectrum
In this patent, we present MultiCode Direct Sequence Spread Spectrum (MC-DSSS) which is a modulation scheme that assigns up to N DSSS codes to an individual user where N is the number of chips per...
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6389137 |
VIDEO SIGNAL TRANSMITTING METHOD, VIDEO SIGNAL OUTPUT DEVICE, VIDEO SIGNAL RECEIVER, VIDEO ANTI-DUPLICATION CONTROL SYSTEM, ADDITIONAL INFORMATION SUPERIMPOSING AND EXTRACTING SYSTEM AND VIDEO SIGNAL RECORDING MEDIUM
A playback device generates a Pseudo-random noise (PN) code sequence repeatedly with a predetermined period in synchronism with a video sync signal. An anti-duplication control signal is spectrally...
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6320965 |
Secure watermark method and apparatus for digital signals
Watermark data is encoded in a digitized signal by forming a noise threshold spectrum which represents a maximum amount of imperceptible noise, spread-spectrum chipping the noise threshold spectrum...
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RE36791 |
Location system adapted for use in multipath environments
A radiolocation system for multipath environments, such as for tracking objects in a semiconductor fabrication facility (FIGS. 1a-1b), includes an array of receivers (20) distributed within the...
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6081601 |
Method of implementing connection security in a wireless network
The invention relates to a method of providing connection security for a connection between terminals in a wireless network. In the method data is transmitted from a first terminal (MS1) via nodes...
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6061389 |
Frequency-hopping communication system and communication station
A frequency hopping communication system having a plurality of wireless mobile stations and at least one base station. Each wireless mobile station is operated to communicate according to a...
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RE36533 |
***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
Multicode direct sequence spread spectrum
In this patent, we present MultiCode Direct Sequence Spread Spectrum (MC-DSSS) which is a modulation scheme that assigns up to N DSSS codes to an individual user where N is the number of chips per...
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5930366 |
Synchronization to a base station and code acquisition within a spread spectrum communication system
Each transmission frame within a spread spectrum communications system relating to synchronization code transmission is divided into a plurality of slots. Each of the slots includes a primary...
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5930291 |
Method and apparatus for selecting random values from a non-sequential set
A method and apparatus for the selection of random values from a set of N non-sequential values includes software in ROM and RAM for information pool storage. Coupled to the ROM and RAM, a...
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5923760 |
Chaotic communication apparatus and method for use with a wired or wireless transmission link
A covert communication apparatus exploits chaotic dynamics in the multi-dimensional phase space with a continuous number of states and wide internal spectral bandwidth. The information modulates a...
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5848155 |
Spread spectrum watermark for embedded signalling
A watermark is embedded into audio/video/image/multimedia data using spread spectrum methodology. The watermark is extracted from watermarked data without the use of an original or unwatermarked...
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5841806 |
Method and apparatus for the transmission of energy-scaled variable rate data
An apparatus for communicating variable rate data over a communication channel. A modulator that receive frames of user data each comprised of data symbols. The modulator repeats the data symbols...
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5825887 |
Transmitting and receiving apparatus for full code correlation operation under encryption for satellite positioning system
The transmitting and receiving apparatus and method for full code correlation operation under encryption for the Satellite Positioning System (SATPS) are disclosed. The apparatus includes a central...
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5781582 |
Frequency agile transceiver with multiple frequency synthesizers per transceiver
A base station communicates with a plurality of mobile stations over a cellular network. In one embodiment, the base station includes a receiver having a receiver synthesizer input, where the...
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5771288 |
Multiple access coding for radio communications
Individual information signals encoded with a common block error-correction code are assigned a unique scrambling mask, or signature sequence, taken from a set of scrambling masks having selected...
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5754650 |
Simultaneous multichannel television access control system and method
A multichannel television access control system is disclosed wherein processing of the broadband signal is performed by gated coherent RF injection on a plurality of channels, thereby effecting...
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5712868 |
Dual mode communication network
The dual mode communication network comprises a first communication system having a frame structure and a first traffic channel protocol and a second communication system having the frame structure...
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5712867 |
Two-way paging apparatus having highly accurate frequency hopping synchronization
A method, apparatus and system is described for distributing accurate time-of-day information from an existing telecommunications infrastructure without modifying the existing infrastructure. In...
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RE35650 |
Spread spectrum communications system
A spread spectrum communication system for direct sequence transmission of digital information having a modulation format which is particularly suitable for indoor communication within residential,...
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5668880 |
Inter-vehicle personal data communications device
A device for wireless, secure transmission of digital information signals utilizing carrier sense multiple access (CSMA) packet communications, or spread spectrum code division multiple access...
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5659587 |
Spread spectrum phase-locked loop clock generator with VCO driven by a symmetrical voltage ramp signal
A phase-locked loop circuit comprises a VCO and a ramp generator. The ramp generator has an output connected to a control terminal of the VCO. A center frequency control loop is connected between a...
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5659569 |
Data burst randomizer
A method and system, for use in a communication system in which data is transmitted in data frames of a predetermined time duration, for the positioning of the data within the data frames for...
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5640415 |
Bit error performance of a frequency hopping, radio communication system
The technique of redundantly retransmitting digitized voice data on multiple sequential frequencies increases the channel bit rate above the minimum required for normal communication in a...
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5640414 |
Mobile station assisted soft handoff in a CDMA cellular communications system
In a code division multiple access (CDMA) spread spectrum cellular communication system in which a mobile station user communicates with another system user via at least one base station, wherein...
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5638399 |
Multi-beam satellite communication system with user terminal frequencies having transceivers using the same set of frequency hopping
The satellite radio communication system of this invention provides communication between one or more service centers and an ensemble of fixed and mobile user terminals. One or more earth orbiting...
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5629955 |
Variable spectral response FIr filter and filtering method
A method and system, for use in a communication system in which data is transmitted in data frames of predetermined time duration, for the positioning of the data within the data frames for...
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5606322 |
Divergent code generator and method
A method and corresponding apparatus (10) for generating a pseudo-random number. The method has steps of generating a first bit stream from a number generator (16, 35), combining a predetermined...
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5598471 |
Method and apparatus for encoding and decoding of audio transmission signals
A system for encoding and decoding an audio transmission signal comprises: (a) an encoder with a frequency-varying means to vary the carrier frequency of the audio signal according to an encryption...
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5598427 |
Wireless alarm system
A wireless alarm system using spread spectrum transmitters, fast frequency shift keying, spread spectrum receivers and computer with a display. The spread spectrum transmitter includes an...
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5594718 |
Method and apparatus for providing mobile unit assisted hard handoff from a CDMA communication system to an alternative access communication system
A method and system for providing a reliable means to perform handoff from a code division multiple access (CDMA) system using a pilot signal to an alternative access communication technique...
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H001626 |
Fiber optic network system with low crosstalk using code-division multiplexing
A code-division multiplexed system comprising an optical source, a code generator for developing and applying a pseudo-random bit sequence code to the optical source to cause the optical source to...
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