| 5953425 |
Personal area network security lock and recharger combination apparatus for equipment access and utilization |
| Sep-14-1999 |
A mechanism is provided, for use with a portable authorization key, such as a "Personal Area Network" (PAN) device, wherein the PAN device is to be carried by a human user and to be used for authorization... |
| 5940515 |
Secure dialing in mobile telephone system |
| Aug-17-1999 |
A cellular telephonic communication system is provided with privacy in the transmission of a dialed number from a mobile station to a base station. This is accomplished by transmitting from the base station... |
| 5937065 |
Keyless motor vehicle entry and ignition system |
| Aug-10-1999 |
A keyless control system is disclosed which may be employed to gain entry to a motor vehicle and start an engine. When using this system, a user activates a remote control by selecting a function for the... |
| 5926546 |
Communication device and system for mobile encrypted communication |
| Jul-20-1999 |
An automatic collection system for automatically collecting a toll charge from an IC card is provided with transceivers in gantries installed along a vehicle road. This collection system uses the transceivers... |
| 5923761 |
Single chip solution for multimedia GSM mobile station systems |
| Jul-13-1999 |
According to the present invention, a single chip semiconductor devices is provided. In one version of the invention, a single chip CMOS technology architecture is used to implement all or various combinations... |
| 5917915 |
Scramble/descramble method and apparatus for data broadcasting |
| Jun-29-1999 |
A transmitter for transmitting news data via satellite and which includes an information storage unit for storing news data, an information scramble processing unit for scrambling the news data using a... |
| 5917852 |
Data scrambling system and method and communications system incorporating same |
| Jun-29-1999 |
Users or subscribers of a multi-user communications system, such as a spread spectrum communications system, provide signals to the central station or base unit of that system, and receive signals therefrom.... |
| 5909491 |
Method for sending a secure message in a telecommunications system |
| Jun-1-1999 |
A method for sending a secure message in a telecommunications system using public encryption keys. A sending transceiver encrypts the message c using the sender's own public encryption key Ex to generate... |
| 5905798 |
TIRIS based kernal for protection of "copyrighted" program material |
| May-18-1999 |
The invention consists of attaching or embedding a "TIRIS" transponder (or other RF or IR or barcode or other identifying device) physically into the center of the proposed DVD disk. Within the memory... |
| 5901226 |
Communication system with automatic handoff |
| May-4-1999 |
A method for organizing a communication system with automatic handoff. The method includes steps of: (i) sending a message from a first remote unit to a monitoring site during a specific time slot within... |
| 5898783 |
System and method for employing a telecommunications network to remotely disable a SIM or smartcard |
| Apr-27-1999 |
In a smartcard having a subscriber identity module ("SIMI") that cooperates with a mobile station to effect communication with a telecommunications network, a system for, and method of, disabling the smartcard.... |
| 5878137 |
Method for obtaining authenticity identification devices for using services in general, and device obtained thereby |
| Mar-2-1999 |
Method for obtaining authenticity identification devices for using services in general wherein authenticity is guaranteed without resorting to the manufacturer of the device to ensure its validity; the... |
| 5862221 |
Scramble wireless communication system |
| Jan-19-1999 |
As for wireless communication lines between a master station and a plurality of remote stations, each remote station has a function F having an unitary variable which is known over all the stations and... |
| 5844987 |
Communications system and method using vehicle identifications |
| Dec-1-1998 |
A communications system for transmitting selected information to a registered mobile terminal in response to the reporting of a vehicle identification associated with the registered mobile terminal to... |
| 5841873 |
Methods of detecting decryption errors |
| Nov-24-1998 |
In a data communications system, including an infrastructure arranged to communicate over a data channel with a plurality of data terminals, a method of detecting data decryption errors in a data packet... |
| 5841862 |
Mobile radio communications apparatus |
| Nov-24-1998 |
When at a starting time of an apparatus with a power supply turned ON a designation operation of a communication mode is carried out or one communication operation is finished, a base station search control... |
| 5838798 |
Restaurant transaction processing system and method |
| Nov-17-1998 |
A restaurant transaction processing system which employs low-cost cordless phone transceivers to transmit orders. A server includes a first cordless telephone transceiver. A portable computer includes... |
| 5838797 |
Secure communication by encryption/decryption of vector at PSK modulation/detection stage |
| Nov-17-1998 |
At the transmit end of a secure communication system, an input data symbol is mapped to a corresponding vector in a two-dimensional phase plane. The vector is pseudorandomly phase-rotated in a first direction... |
| 5832090 |
Radio frequency transponder stored value system employing a secure encryption protocol |
| Nov-3-1998 |
An encryption method and stored value system comprising a host computer, a reader/writer that communicates with the host computer, and an RF transponder that communicates with the reader/writer. The transponder... |
| 5825889 |
Use of duplex cipher algorithms for satellite channels with delay |
| Oct-20-1998 |
An apparatus and method for ciphering traffic exachanged in both directions between a satellite/cellular telephone and a ground station networkusing an orbitial satellite. A buffer memory is provided at... |
| 5825888 |
Descrambling device |
| Oct-20-1998 |
In a packet analyzing circuit, first and second key data are detected and stored in respective first and second key data registers. First and second key generation circuits generate first and second keys... |
| 5809141 |
Method and apparatus for enabling mobile-to-mobile calls in a communication system |
| Sep-15-1998 |
A communication system is disclosed which reduces loop delay when a first wireless phone calls a second wireless phone wherein the first and second phones are served by the same relay station. The communication... |
| 5802177 |
Apparatus for radio local loop system |
| Sep-1-1998 |
Apparatus for a radio local loop for a telecommunications system, such as a base station (1) or a subscriber station (2), comprises a first unit (4, 13), which includes call processing and speech transcoding/encryption... |
| 5799091 |
Single chip solution for multimedia GSM mobile station systems |
| Aug-25-1998 |
According to the present invention, a single chip semiconductor devices is provided. In one version of the invention, a single chip CMOS technology architecture is used to implement all or various combinations... |
| 5796832 |
Wireless transaction and information system |
| Aug-18-1998 |
A financial information and transaction system utilizes wireless communication in connection with portable terminals. In this system, a terminal is connected to the financial institution via a wireless... |
| 5790817 |
Configurable digital wireless and wired communications system architecture for implementing baseband functionality |
| Aug-4-1998 |
A configurable multiprocessor communications architecture which performs digital communications functions and which is configurable for different digital communications standards, such as various digital... |
| 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... |
| 5787174 |
Remote identification of integrated circuit |
| Jul-28-1998 |
Circuitry mounted within a single hybrid or monolithic integrated circuit (I.C.) package including: (1) a first integrated circuit which is desired to be tracked for some purpose such as security or inventory,... |
| 5784462 |
Digital signal receiver capable of receiving data encrypted and transmitted in online processing |
| Jul-21-1998 |
In a decoding processing circuit of a digital signal receiver, a first comparison circuit detects that a prefix of packet data is inputted in a shift register on the basis of a count value of a counter... |
| 5781628 |
System and method for selective restriction of ciphering |
| Jul-14-1998 |
A system and method for selectively restricting wireless ciphering communications within a telecommunications system is disclosed. A ciphering database contains flags corresponding to the ciphering restrictions... |
| 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... |
| 5768276 |
Digital control channels having logical channels supporting broadcast SMS |
| Jun-16-1998 |
A communications system in which information is transmitted in successive time slots grouped into a plurality of superframes which are, in turn, grouped into a plurality of hyperframes. A remote station... |
| 5757916 |
Method and apparatus for authenticating the location of remote users of networked computing systems |
| May-26-1998 |
A method and apparatus for authenticating the identity of a remote user entity where the identity of such user entity is authenticated by use of information specific to geodetic location of the user entity... |
| 5751813 |
Use of an encryption server for encrypting messages |
| May-12-1998 |
An encryption server receives a first encrypted message (105) and decrypts (403) the encrypted message using a first key, yielding a decrypted message comprising a second encrypted message (105A), an identification... |
| 5745575 |
Identification-friend-or-foe (IFF) system using variable codes |
| Apr-28-1998 |
An Identification-Friend-or-Foe System Using Variable Codes (IFF System) lizes variable codes and pre-selected encryption/decryption technology to querry potential targets as to their battlefield affiliation... |
| 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... |
| 5727064 |
Cryptographic system for wireless communications |
| Mar-10-1998 |
A wireless communications system (110) with increased privacy. The system (110) transmits an encrypted signal between a base station (112) and a wireless terminal (122). In the forward channel, the base... |
| 5712915 |
Encrypted digital circuit multiplication system |
| Jan-27-1998 |
A digital circuit multiplier (DCM) system which permits encrypted signals to obtain a multiplication gain at the DCM equipment without decrypting the signals at the DCM equipment. Detection of speech/silence... |
| 5708716 |
Fraud detection and user validation system for mobile earth terminal communication device |
| Jan-13-1998 |
An authentication system authenticates a mobile communication system each time it attempts to register or communication in a mobile satellite system. The authentication system stores a first security key... |
| 5703950 |
Method and apparatus for controlling country specific frequency allocation |
| Dec-30-1997 |
A secure communication system is provided for transmitting a country specific frequency allocation in encrypted form between a host processor and a remote device. The secure communication system comprises... |
| 5694473 |
Decryption of retransmitted data in an encrypted communication system |
| Dec-2-1997 |
A method of decrypting retransmitted parts of a message includes receiving (201) a message comprising encryption synchronization and a plurality of encrypted blocks. Until a first block of the plurality... |
| 5689568 |
Medium access control for a mobile satellite system |
| Nov-18-1997 |
The present invention provides a medium access control (MAC) layer in a mobile satellite system. The MAC transfers data across the physical channels in the air interface between the mobile terminals, the... |
| 5689563 |
Method and apparatus for efficient real-time authentication and encryption in a communication system |
| Nov-18-1997 |
Radio frequency based cellular telecommunication systems often require both subscriber units and communication units of a fixed network communication system to maintain secret data which may be used to... |
| 5668880 |
Inter-vehicle personal data communications device |
| Sep-16-1997 |
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 (CDMA) circuits,... |
| 5661802 |
Auxiliary power and telephone signal distribution system |
| Aug-26-1997 |
A telephone and auxiliary power distribution system in a building has a flexible multi-conductor signal and power distribution cable; which cable originates from a central signal & power management facility... |
| 5659617 |
Method for providing location certificates |
| Aug-19-1997 |
Methods and apparatus for providing location certificates to certify the position or location of an object are disclosed. The position of the object is computed using radio signals and the secure transmission... |
| 5659615 |
Secure satellite receive-only local area network with address filter |
| Aug-19-1997 |
A receiver is connected to a satellite communication network. The receiver includes a satellite receiver card for receiving a packet containing data from the satellite communication network and a satellite... |
| 5629981 |
Information management and security system |
| May-13-1997 |
A closed loop, (networked) information management and security system which provides a secure, end-to-end fully automated solution for controlling access, transmission, manipulation, and auditability of... |
| 5610984 |
Optimal L2 tracking in a SPS receiver under encryption without knowledge of encryption timing characteristics |
| Mar-11-1997 |
The optimal design of the SPS Receiver is disclosed. The optimal SPS Receiver includes the digital filter with adjustable characteristics in each digital processing channel. The optimal design of the SPS... |
| 5604806 |
Apparatus and method for secure radio communication |
| Feb-18-1997 |
Characteristics of the radio channel are used to establish key sequences for use in encrypting communicated information. These characteristics are the short-term reciprocity and rapid spatial decorrelation... |
