1
Peter V W Loomis, Peter L Froeberg: Position reporting cellular telephone. Trimble Navigation, Thomas E Law Offices of Thomas E Schatzel A Prof Corporation Schatzel, April 29, 1997: US05625668 (347 worldwide citation)

A cellular telephone system embodiment of the present invention comprises a combination global positioning system (GPS) receiver and cellular transceiver and a data processing facility for converting latitude, longitude, velocity and bearing information provided by the GPS receiver into meaningful d ...


2
George J Geier, Ardalan Heshmati, Kelly G Johnson, Patricia W McLain: Position and velocity estimation system for adaptive weighting of GPS and dead-reckoning information. Trimble Navigation, Thomas E Schatzel, May 16, 1995: US05416712 (337 worldwide citation)

An embodiment of the present invention is a combined GPS and dead-reckoning (DR) navigation sensor for a vehicle in which a pair of modifications are made to an otherwise conventional Kalman filter. Process noise is adapted to cope with scale factor errors associated with odometer and turning rate s ...


3
K Tysen Mueller, Peter V W Loomis, Rudolph M Kalafus, Leonid Sheynblat: Networked differential GPS system. Trimble Navigation, Thomas E Schatzel, June 21, 1994: US05323322 (326 worldwide citation)

An embodiment of the present invention relates to a worldwide network of differential GPS reference stations (NDGPS) that continually track the entire GPS satellite constellation and provide interpolations of reference station corrections tailored for particular user locations between the reference ...


4
George J Geier: Exploration system and method for high-accuracy and high-confidence level relative position and velocity determinations. Trimble Navigation, Thomas E Schatzel, April 13, 1993: US05202829 (267 worldwide citation)

An embodiment of the present invention is a shipboard GPS positioning system having data links to outlying tailbuoys equipped with respective GPS receivers. On ship, an Intel 386-based microcomputer system collects data from various ship's equipment including the ship's GPS receiver and data from th ...


5
Russell K Johnson: Separated GPS sensor and processing system for remote GPS sensing and centralized ground station processing for remote mobile position and velocity determinations. Radix Technologies, Thomas E Schatzel, May 30, 1995: US05420592 (238 worldwide citation)

A rawinsonde system embodiment of the present invention includes a digital GPS snapshot buffer and a serial communications controller for transmitting message frames formed of a combination of digital GPS data from the snapshot buffer and digitized hardwired meteorological data input from a humidity ...


6
Howard S Lewis, Steve R Falcon, Jimmy Soetarman, John A Roberts III, Yean W Chan, Richard M Hartman: Computer-implemented method and apparatus for remote educational instruction. One Touch Systems, Thomas E Schatzel, April 12, 1994: US05303042 (230 worldwide citation)

An apparatus of the present invention includes a viewer response system comprising a host site and at least one remote site interconnected by a satellite channel for host-to-remote video, an X.25 communications channel for message exchanges establishing a virtual circuit between each remote and the ...


7
Piritheos E Xanthopoulos: Peristaltic infusion pump and disposable cassette for use therewith. Medical Technology, Thomas E Schatzel, August 27, 1985: US04537561 (227 worldwide citation)

An improved peristaltic infusion pump and disposable cassette for use therewith. The cassette includes a hollow conduit arrangement with a section of elastic tubing and adapted to pass intravenous fluids therethrough. The conduit is fixedly mounted in a rigid cassette wherein an intermediate section ...


8
David S Sprague, Arthur Woo: Portable personal navigation tracking system. Trimble Navigation, Thomas E Schatzel, June 6, 1995: US05422816 (220 worldwide citation)

A data/voice modem embodiment of the present invention comprises an asynchronous-to-synchronous data converter for interface with a GPS receiver, a minimum space keyed modem, and a continuous tone controlled sub-audible squelch controller that modulates a radio transceiver interface with a discrete ...


9
Balu Balakrishnan: Switched mode power supply integrated circuit with start-up self-biasing. Power Integrations, Thomas E Schatzel, February 8, 1994: US05285369 (198 worldwide citation)

An embodiment of the present invention is a switching power supply that includes a full-wave bridge rectifier to rectify incoming AC line voltage, a transformer having a primary winding and two secondary windings and a switched mode power supply chip that includes an integrated high voltage power MO ...


10
Michael D Phillips, Darrell L Wilburn, Van T Hua, Gordon A Minami, Robert J Kresge, Charles Verhaegh: High speed microcomputer in-circuit emulator. Step Engineering, Thomas E Schatzel, June 14, 1994: US05321828 (196 worldwide citation)

An in-circuit emulator (ICE) for hardware/software development and debugging microprocessors. Program execution reconstruction is extracted from an on-board cache memory. An external ICE enclosure interfaces to a target system microprocessor via a cable and a buffer/interface pod. A control program ...