1
Alison K Brown, Mark A Sturza: GPS tracking system. NAVSYS Corporation, William E Hein, January 3, 1995: US05379224 (304 worldwide citation)

A low cost tracking system employing satellites of the global positioning system (GPS) is suitable for applications involving radiosondes, sonobuoys, and other objects. The tracking system includes a sensor mounted on each object which digitally samples the GPS satellite signals and records them in ...


2
Alan James Dabbiere: Methods and devices utilizing a GPS tracking system. Morris Manning & Martin, May 1, 2001: US06226622 (135 worldwide citation)

A method and system which tracks productivity including summarization of ‘tasks performed’ for productivity analysis. The tracking capabilities of the system uses a global positioning system and includes a complete reconstruction (graphically if desired by overlaying the positional movements on a 2 ...


3
David A Baker: Portable self-contained tracking unit and GPS tracking system. Lat Lon, January 15, 2002: US06339397 (111 worldwide citation)

A portable self-contained tracking unit includes an enclosure attached to a mounting plate, with a hollow interior cavity housing a GPS receiver, a microprocessor and a transmitter. The GPS receiver will receive tracking data and the microprocessor will process the tracking data into a data packet. ...


4
Kenneth Brakeley Welles II, Richard Louis Frey: Very low power high accuracy time and frequency circuits in GPS based tracking units. General Electric Company, Marvin Snyder, Douglas E Stoner, January 26, 1999: US05864315 (82 worldwide citation)

A direct sequence spread spectrum signal processing system permits the receiver to be turned off during most of the acquisition phase of reception to significantly reduce the on time of the associated receiver front end. Power requirements are further reduced by use of very low power high accuracy t ...


5
Brown Alison K, Sturza Mark A: Gps tracking system.. Navsys, June 9, 1993: EP0545636-A1 (42 worldwide citation)

A low cost tracking system employing satellites of the global positioning system (GPS) is suitable for applications involving radiosondes, sonobuoys, and other objects. The tracking system includes a sensor (10) mounted on each object which digitally samples the GPS satellite signals and records the ...


6
Philip Scott Lyren, Glen A Norris: Smartphone with user interface to externally localize telephone calls. February 28, 2017: US09584653 (6 worldwide citation)

A user interface of an electronic device includes icons that enable a user to answer a telephone call in monophonic sound or binaural sound. When the telephone call is answered in binaural sound, the electronic device convolves a voice in the call with head related transfer functions (HRTFs) of a pe ...


7
Hunter Andrew Arthur: Controlling the use of portable cameras. Hewlett Packard Co, October 30, 2002: GB2374968-A (4 worldwide citation)

Apparatus for restricting and or prohibiting the use of a portable camera within a predetermined area, comprising a first unit 10 mounted in or on a portable camera (not shown). The unit 10 includes a receiver 12 for receiving periodic radio signals 14 from one or more transmitters 16 located remote ...


8
Martin A Kapp: Income tax preparation system for traveling taxpayers. David A Belasco, Belasco Jacobs & Townsley, July 20, 2010: US07761333 (3 worldwide citation)

A system for determining travel deductions includes a city rate table identifying allowed per diem expense rates for each city. Cities visited, durations of stay and expense reimbursements received from the taxpayer's employer are input to the system. The system calculates a total of all per diem ex ...


9
Hunter Andrew Arthur: Controlling the use of portable cameras. Hewlett Packard Co, August 7, 2002: GB2371907-A (3 worldwide citation)

Apparatus for restricting and/or prohibiting the use of a portable camera within a predetermined area, comprising a first unit 10 mounted in or on a portable camera (not shown). The unit 10 includes a receiver 12 for receiving periodic radio signals 14 from one or more transmitters 16 located remote ...


10
Jeff M Horslund, Kenneth S Barron, Bernard J Gil, Christopher D Collinvitti: Low power dissipation tracking architecture for GPS navigation systems. Raytheon Company, John E Gunther, Leonard A Alkov, Karl A Vick, July 4, 2006: US07071871 (3 worldwide citation)

A low power GPS tracking system. The novel system includes a first circuit adapted to collect samples of a signal for a first predetermined length of time and in accordance therewith generate an output signal, and a second circuit for cyclically powering on the first circuit for the first predetermi ...