| 7039614 |
Method for simulcrypting scrambled data to a plurality of conditional access devices |
| May-2-2006 |
In accordance with one embodiment, a method for storing a normal scrambled digital program is provided. The method includes receiving a scrambled program, and receiving a plurality of access requirements.... |
| 7023996 |
Encryption for asymmetric data links |
| Apr-4-2006 |
A method is provided for asymmetrically encrypting data communicated between a ground platform and multiple airborne platforms. The method includes packet encrypting ground-based data so as to preserve... |
| 6938169 |
Channel-specific file system views in a private network using a public-network infrastructure |
| Aug-30-2005 |
Methods and systems consistent with the present invention provide a Supernet, a private network constructed out of components from a public-network infrastructure. The Supernet provides channel-specific... |
| 6928420 |
Automated transaction apparatus |
| Aug-9-2005 |
An automated transaction apparatus capable of connecting to both a private line and a commercial line. Therefore, by using a private line to communicate data requiring high security, it is possible to... |
| 6882727 |
Method of ciphering data transmission in a radio system |
| Apr-19-2005 |
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 the... |
| 6810087 |
Ultra-wideband communications system |
| Oct-26-2004 |
An ultra-wideband (UWB) communications system combines the techniques of a transmitted reference (TR) and a multiple access scheme called delay hopping (DH). Combining these two techniques using UWB signaling... |
| 6795554 |
Method of transmitting medical information over a network |
| Sep-21-2004 |
A method for transmitting medical information relating to a patient over a network, such as a telecommunication network. The medical information includes both patient identifiable data as well as patient... |
| 6778669 |
Quantum encryption device |
| Aug-17-2004 |
A quantum encryption device comprises a transmitter and a receiver between which an encrypted piece of information is transmitted. The transmitter comprises at least means to send a first packet of photons... |
| 6772434 |
Device and method for the integrated presentation of a secondary service as a part of a primary service |
| Aug-3-2004 |
A method and apparatus for providing an integrated presentation of existing media program services and secondary media program services is described. The method comprises the steps of receiving and displaying... |
| 6768903 |
Method of controlling a channel between a radio terminal and a cellular radiocommunication infrastructure, and access network implementing such a method |
| Jul-27-2004 |
Ciphered information is transmitted over a first communication path in circuit mode between a core network and a terminal, passing through a first master controller, then over a second path between the... |
| 6618696 |
Method of testing and simulating communication equipment over multiple transmission channels |
| Sep-9-2003 |
The present invention is a method of simulating the effects of a plurality of channels on a signal that includes the steps of acquiring a state transition matrix for each of said plurality of channels;... |
| 6577732 |
Hierarchical encryption technique for dense wavelength division multiplexed systems using a wavelength bus architecture |
| Jun-10-2003 |
Transmission-based data security is provided in dense wavelength division multiplexing systems using a transmission scheme that incorporates hierarchical scrambling techniques with a unique multiplexing... |
| 6560707 |
Multimedia coordination system |
| May-6-2003 |
In a network, a media coordination system provides secure multimedia communication channels in a collaborative network environment. The media coordination system provides automatic encryption, dynamic... |
| 6501841 |
Method for providing security for a transmission of information through a plurality of frequency orthogonal subchannels |
| Dec-31-2002 |
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 orthogonal... |
| 6487657 |
Data communication network |
| Nov-26-2002 |
The invention relates to a data communication network suitable for the exchange of data between computers, which network comprises at least one substantially wireless LAN (Local Area Network) and access... |
| 6484257 |
System and method for maintaining N number of simultaneous cryptographic sessions using a distributed computing environment |
| Nov-19-2002 |
An N session distributed architecture provides a software solution to the major computational challenges faced with providing secure communication. A registration entity is identified as the session arbitrator... |
| 6480608 |
Method for exchanging cryptographic keys in an ATM network using multiple virtual paths or circuits |
| Nov-12-2002 |
In an Asynchronous Transfer Mode telecommunications network having a plurality of virtual paths or circuits, an encryption key used for data transmitted between a source and a receiver may be updated,... |
| 6377690 |
Safe transmission of broadband data messages |
| Apr-23-2002 |
An arrangement for providing secure transmission of information. The bulk of the information is transmitted over non-secure channels such as broadcast media which terminate on a plurality of receiving... |
| 6373952 |
Data transmitting apparatus, data transmitting method, data receiving apparatus, data receiving method, data transmission apparatus, and data transmission method |
| Apr-16-2002 |
The present invention provides a data transmission apparatus which enhances the safety with respect to leakage of encoded transmitted data by raising the safety of transmission of an encoding key or a... |
| 6347143 |
Cryptographic device with encryption blocks connected parallel |
| Feb-12-2002 |
A cryptographic device includes a de-multiplexer, a plurality of encryption blocks, a plurality of permutation blocks, and a multiplexer. The encryption blocks encrypt data to produce encrypted data. The... |
| 6339646 |
Slotted mode code usage in a cellular communications system |
| Jan-15-2002 |
The downlink channelization code limitation problem encountered in spread spectrum or CDMA cellular systems is resolved by using codes from a different, non-orthogonal code set when operating in the slotted... |
| 6148081 |
Security model for interactive television applications |
| Nov-14-2000 |
A system and method implemented in an interactive television system for restricting or controlling the access rights of interactive television applications and carousels. The system broadcasts modules... |
| 6122376 |
State synchronized cipher text scrambler |
| Sep-19-2000 |
A state synchronized cipher text scrambler is disclosed. The state synchronized cipher text scrambler enables multiple data streams to be scrambled in parallel in such a way that the data streams are uncorrelated... |
| 6088800 |
Encryption processor with shared memory interconnect |
| Jul-11-2000 |
An encryption chip is programmable to process a variety of secret key and public key encryption algorithms. The chip includes a pipeline of processing elements, each of which can process a round within... |
| 6081601 |
Method of implementing connection security in a wireless network |
| Jun-27-2000 |
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 in the... |
| 6038668 |
System, method, and medium for retrieving, organizing, and utilizing networked data |
| Mar-14-2000 |
A networked catalog search, retrieval, and information correlation and matching system is disclosed. The system allows suppliers to publish information in electronic catalogs, structure the information... |
| 6038319 |
Security model for sharing in interactive television applications |
| Mar-14-2000 |
A system and method implemented in an interactive television system for restricting access between modules of different interactive television applications and carousels. The system broadcasts modules... |
| 6029151 |
Method and system for performing electronic money transactions |
| Feb-22-2000 |
The present invention relates to electronic monetary systems in general, and in particular to measures for making their use easier for an average user. The present invention is based on the idea that the... |
| 6012144 |
Transaction security method and apparatus |
| Jan-4-2000 |
A method for performing secure transactions, such as credit card purchases, using two or more non-secure networks (such as the Internet and the public telephone system) in such a way that security is insured.... |
| 5966448 |
Cryptographic communication system |
| Oct-12-1999 |
According to a cryptographic communication system which can safely perform cipher conversion processing when cryptographic communication is performed between terminals using different cipher types, when... |
| 5966442 |
Real-time information delivery system for aircraft |
| Oct-12-1999 |
A satellite-based digital broadcast system is used to provide real-time news, entertainment and informational programs to aircraft passengers in flight. Transmissions from the satellite occur on a time... |
| 5946398 |
State synchronized cipher text scrambler |
| Aug-31-1999 |
A state synchronized cipher text scrambler is disclosed. The state synchronized cipher text scrambler enables multiple data streams to be scrambled in parallel in such a way that the data streams are uncorrelated... |
| 5930365 |
Digital data shuffling/de-shuffling system |
| Jul-27-1999 |
The invention provides a digital data shuffling/de-shuffling system so that information data is not understood or deciphered by unauthorized third party. Included are a system for generating plural bits... |
| 5894517 |
High-speed backplane bus with low RF radiation |
| Apr-13-1999 |
A method and apparatus for substantially reducing electromagnetic radiation from a backplane used to interconnect multiple communication modules. Data signals to be transmitted onto the backplane are first... |
| 5870479 |
Device for processing data packets |
| Feb-9-1999 |
The invention relates to a device (1) for processing data packets, comprising identification means (14) for identifying a data packet, processing means (11, 12) for cryptographically processing the data... |
| 5835597 |
Software-efficient pseudorandom function and the use thereof for decryption |
| Nov-10-1998 |
A software-efficient pseudorandom function maps an index and an encryption key to a pseudorandom bit string useful for constructing a stream cipher. The method begins by preprocessing the encryption key... |
| 5822433 |
Method, system and subscriber facility for manipulation-proof separation of message streams |
| Oct-13-1998 |
The present invention concerns a method for the manipulation-proof separation of message streams, which are transmitted in the subscriber loop (3) of a communication network via a medium (30) that is common... |
| 5793871 |
Optical encryption interface |
| Aug-11-1998 |
An analog optical encryption system based on phase scrambling of two-dimensional optical images and holographic transformation for achieving large encryption keys and high encryption speed. An enciphering... |
| 5787180 |
Method of connecting a scrambler or encryption device to a hand-held portable cellular telephone |
| Jul-28-1998 |
An apparatus and method for voice privacy for cellular phones includes generic connection points to make it universal for most cellular phones. The connection points include the speaker and microphone... |
| 5778073 |
Method and device for speech encryption and decryption in voice transmission |
| Jul-7-1998 |
A digitized real voice signal is converted via complex filtering into a complex signal that is subjected to sampling rate reduction, the bandwidth of the respective complex filter corresponding to the... |
| 5771288 |
Multiple access coding for radio communications |
| Jun-23-1998 |
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 correlation... |
| 5742678 |
Multiple access coding for radio communications |
| Apr-21-1998 |
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 correlation... |
| 5675652 |
Computer readable device implementing a software-efficient pseudorandom function encryption |
| Oct-7-1997 |
A software-efficient pseudorandom function maps an index and an encryption key to a pseudorandom bit string useful for constructing a stream cipher. The method begins by preprocessing the encryption key... |
| 5598471 |
Method and apparatus for encoding and decoding of audio transmission signals |
| Jan-28-1997 |
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 algorithm;... |
| 5511124 |
Cryptographic equipment |
| Apr-23-1996 |
In the transmission of information which require secrecy, such as voice and data, serial bit streams having bit rates of more than 100 Mbit can occur, particularly given digital signal hierarchies according... |
| 5475707 |
Broadband communications system |
| Dec-12-1995 |
A signal of bandwidth F.sub.max is unambiguously transmitted over a datalink having a bandwidth less than F.sub.max by subdividing the signal into a plurality of subspectrums and bandshifting the subspectrums... |
| 5469469 |
Composite spread spectrum signal including modulator demodulator |
| Nov-21-1995 |
A composite spread spectrum signal including modulator and demodulator therefor is disclosed. The composite signal having a multi-dimensional signal space, comprising a pulse position modulation dimension... |
| 5454039 |
Software-efficient pseudorandom function and the use thereof for encryption |
| Sep-26-1995 |
A software-efficient pseudorandom function maps an index and an encryption key to a pseudorandom bit string useful for constructing a stream cipher. The method begins by preprocessing the encryption key... |
| 5448643 |
Authenticaton system |
| Sep-5-1995 |
A system for secure communications between first and second locations where he first location measures the location of the second location. The first location then codes that measured location along with... |
| 5442652 |
Broadcast synchronized communication system |
| Aug-15-1995 |
A communication system in accordance with the invention employs a broadcast signal for synchronization of the transmitters and receivers in the system without use of a special base transmitter for synchronizing... |
