1
Donald L Schilling: Wireless telephone debit card system and method. InterDigital Technology Corporation, David Newman & Associates, October 25, 1994: US05359182 (216 worldwide citation)

A wireless telephone debit card communications system comprising a radio telephone, a base station, and an end station. The radio telephone includes a processor; a reader for reading a credit amount and a telephone number of a debit card; a writer for changing the credit amount and the telephone num ...


2
Eric Paneth, Mark J Handzel, Steven Allan Morley, Graham M Avis: Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels. InterDigital Technology Corporation, Volpe and Koenig P C, November 11, 1997: US05687194 (186 worldwide citation)

A system for the wireless transmission of multiple information signals utilizing digital time division circuits between a base station and a plurality of subscriber stations. The subscriber stations may be fixed or movable. The number of time division circuits is determined by the transmission quali ...


3
D Ridgely Bolgiano, Gilbert E LaVean: Wireless telephone distribution system with time and space diversity transmission for determining receiver location. Interdigital Technology Corporation, March 25, 1997: US05614914 (180 worldwide citation)

A wireless communication system combines time and space diversity to reduce fading and simplify receiver design. In particular, a data packet which carries digital telephone traffic, is transmitted at three different times from three different antennas. The mobile subscriber receiver thus receives t ...


4
Donald L Schilling: Synchronous spread-spectrum communications system and method. InterDigital Technology Corporation, David Newman & Associates, July 13, 1993: US05228056 (169 worldwide citation)

A spread spectrum communications system for use over a communications channel, including a transmitter-generic-chip-code generator, a transmitter-message-chip-code generator, an EXCLUSIVE-OR gate, a combiner, a transmitter, a receiver-generic-chip-code generator, a receiver-generic mixer, a generic- ...


5
Allen G Jacobson, Donald L Schilling, Kenneth J Henrich: Broadcast synchronized communication system. InterDigital Technology Corporation, David Newman, February 22, 1994: US05289497 (155 worldwide citation)

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 signal transmissions. Each transmitter having a pre-assigned time slot counts from a sync ...


6
Donald L Schilling: Overlaying spread-spectrum satellite system and method. Interdigital Technology Corporation, David Newman & Associates, November 21, 1995: US05469468 (148 worldwide citation)

A spread-spectrum satellite system for communicating data and paging messages to a plurality of remote units. The spread-spectrum communications system has a satellite with an antenna beamwidth located within a same geographical region as covered by an existing FDMA, TDMA or other mobile-satellite s ...


7
Kamel M Shaheen: Method and apparatus for resource management in handover operation. Interdigital Technology Corporation, Condo Roccia Koptiw, August 26, 2014: US08817741 (142 worldwide citation)

A method and apparatus for resource management during handover operation includes initiating a handover from a first access network to a second access network. A policy update message is sent and a policy update confirmation message is received. A general packet radio service (GPRS) tunneling protoc ...


8
Donald L Schilling: CDMA communications and geolocation system and method. InterDigital Technology Corporation, David Newman & Associates, April 9, 1996: US05506864 (135 worldwide citation)

A spread-spectrum CDMA communications system for locating remote units, and for communicating message data between a plurality of remote units and a base station. The spread-spectrum CDMA communications system includes a plurality of base stations and a plurality of remote units. A base station has ...


9
Donald L Schilling: CDMA/TDMA spread-spectrum communications system and method. InterDigital Technology Corporation, David Newman & Associates, November 9, 1993: US05260967 (134 worldwide citation)

A spread-spectrum transmitter and receiver using code division multiple access with time division multiple access technology for spread-spectrum communications. At a base station, a spread-spectrum transmitter includes a multiplexer for time multiplexing a synchronization-code signal and a plurality ...


10
Donald L Schilling: CDMA communications and geolocation system and method. InterDigital Technology Corporation, David Newman & Associates, November 15, 1994: US05365544 (131 worldwide citation)

A spread-specttrm CDMA communications system for locating remote units, and for communicating message data between a plurality of remote units and a base station. The spread-spectrum CDMA communications system includes a plurality of base stations and a plurality of remote units. A base station has ...