1
Claude A Sharpe, Dwaine S Hurta, Mark A Hamlett: Multi-stage transponder wake-up, method and structure. Texas Instruments Incorporated, Rebecca A Mapstone, James C Kesterson, Richard L Donaldson, April 15, 1997: US05621412 (375 worldwide citation)

A system and method which conserves energy in the operation of a transponder or tag (14) by providing that the transponder (14) be enabled or awakened in multiple stages. A threshold detector (62) is provided which measures the power level of received RF energy. If the RF energy received by the dete ...


2
Claude A Sharpe, Robert P Lindsley: System for automated toll collection assisted by GPS technology. Texas Instruments Incorporated, James C Kesterson, Richard L Donaldson, February 6, 1996: US05490079 (145 worldwide citation)

A system for automated toll collection which utilizes Global Positioning System technology. The invention includes a Toll Tag 24 which comprises GPS sensor 32, signpost sensor 36, gatekey transmitter 38, and processing & recording module 40. Module 40 is comprised of memory 30 storing known toll loc ...


3
Claude A Sharpe, Oscar Barraza: Modulation field detection, method and structure. Texas Instruments Incorporated, Brian C McCormack, James C Kesterson, Richard L Donaldson, September 5, 1995: US05448242 (83 worldwide citation)

Disclosed is a system and method which protects a transponder or tag (14) from being enabled or awakened by spurious RF energy. A modulation detector (64) is provided which detects a modulation signal that is superimposed upon an RF modulation from an interrogator (12). Preferably this superimposed ...


4
Claude A Sharpe, Dwaine S Hurta, Mark A Hamlett, Guenther Froschermeier: Multi-stage transponder wake-up, method and structure. Texas Instruments Incorporated, Texas Instruments Deutschland, Brian C McCormack, James C Kesterson, Richard L Donaldson, November 28, 1995: US05471212 (77 worldwide citation)

A system and method which conserves energy in the operation of a transponder or tag (14) by providing that the transponder (14) be enabled or awakened in multiple stages. A threshold detector (62) is provided which measures the power level of received RF energy. If the RF energy received by the dete ...


5
Cecil C Ho, Claude A Sharpe, Bruce A Butcher, Alexander G Bell: Radio telephone with position transmission capability. Texas Instruments Incorporated, Alva H Bandy, Melvin Sharp, N Rhys Merrett, March 6, 1984: US04435711 (41 worldwide citation)

A communications link having a position capability responsive to either a manual or remote control actuation. In one embodiment, a remote carrier has a navigation system for outputting signals representative of the carrier location or position. A frequency shift key (FSK) modulator is connected to t ...


6
Claude A Sharpe: Phase lock detector for digital frequency synthesizer. The Bendix Corporation, Bruce L Lamb, W G Christoforo, October 26, 1976: US03988696 (35 worldwide citation)

A phase lock detector for a digital frequency synthesizer. The frequency synthesizer includes a programmable digital frequency divider for the output signal, a reference frequency Fr oscillator and a phase lock loop which controls the frequency of the synthesizer output by comparing the phase of the ...


7
Eugene A Robinson, Claude A Sharpe, James W Iseli, Julio E Valella, Kuen Yu Liu: Microcomputer based keyboard command entry concept for VHF communication and navigation systems. Texas Instruments Incorporated, Richard K Robinson, N Rhys Merrett, Melvin Sharp, March 17, 1987: US04651282 (18 worldwide citation)

Airborne navigation and communication systems are disclosed including a VOR/LOC (VHR Omnirange/Localizer) receiver and a communication transceiver each with separate control and display panels. Each panel includes a ten push-button press keys numbered 0-9, a function controller for operating mode se ...


8
Kenneth Goldstein, Claude A Sharpe: Controlled antenna tuner. Texas Instruments Incorporated, Rene E Grossman, Melvin Sharp, James T Comfort, April 19, 1983: US04380767 (17 worldwide citation)

A controlled antenna tuner comprises a power amplifier and a microprocessor, an attenuator connected to the power amplifier for selectively controlling the power output, a low pass filter connected to the power amplifier and microprocessor for channel frequency selection, a vertical standing wave ra ...


9
Claude A Sharpe: Phase detector employing quadruple memory elements. The Bendix Corporation, Bruce L Lamb, William G Christoforo, May 31, 1977: US04027262 (10 worldwide citation)

A phase detector which employs four memory elements suitably comprised by D-type flip-flops. The detector provides an output dependent upon the phase difference between two input signals. One pair of memory elements is clocked by one input signal. The other pair of memory elements is clocked by the ...


10
Claude A Sharpe, Richard V Frazier Jr: Combined keyed AGC and pulse amplitude comparator circuit. The Bendix Corporation, Bruce L Lamb, William G Christoforo, July 4, 1978: US04099124 (6 worldwide citation)

Combined keyed AGC and pulse amplitude comparison circuit for use in pulse pair communications system such as DME wherein AGC keying signal is constituted by the second pulse having a predetermined spacing from a first pulse of a pair and wherein said second pulse also provides a reference against w ...