1
William O Dussell, James M Janky, John F Schipper, David J Cowl: Position based personal digital assistant. Trimble Navigation, Blakely Sokoloff Taylor & Zafman, August 17, 1999: US05938721 (708 worldwide citation)

A task description is stored in a database accessible by a mobile computer system. The mobile computer system receives positioning information corresponding to its geographic location and indexes the database based on the positioning information when the information indicates that the mobile compute ...


2
Michael Murphy, Arthur N Woo, Mark Nichols, John Schipper: Geographical position/image digital recording and display system. Trimble Navigation, Blakely Sokoloff Taylor & Zafman, August 28, 2001: US06282362 (495 worldwide citation)

A geographical position/image capturing system stores object images and position coordinates as digital data. The system incorporates a geo-addressed map data base and geo-positioning device for relating the position of the system at the time the image is captured to the captured digital image data ...


3
David Vaughn: Vehicle speed control based on GPS/MAP matching of posted speeds. Trimble Navigation, Boris G Tankhilevich, January 16, 1996: US05485161 (458 worldwide citation)

The GPS-map speed matching system for controlling the speed of the vehicle is described. The system includes a GPS navigation receiver, a database processing facility, a GPS computer, an engine computer, a video display, a speed sensor and a heading sensor. The database processing facility can be lo ...


4
John R Coffee, Richard W Rudow, Robert F Allen, Mark Billings, David A Dye, Mark L Kirchner, Robert W Lewis, Kevin M Marvin, Robert D Sleeper, William A Tekniepe: Vehicle tracking, communication and fleet management system. Trimble Navigation, Blank Rome, August 26, 2003: US06611755 (424 worldwide citation)

A vehicle fleet management information system identifies location and direction of movement of each vehicle in a fleet in real-time, and automatically reports such information, as well as status of predetermined events in which the vehicle is engaged, directly to the fleet manager. Each fleet vehicl ...


5
David G Bird: Location of missing vehicles. Trimble Navigation, John Schipper, May 23, 1995: US05418537 (399 worldwide citation)

Method and apparatus for determining the present location of a missing vehicle, such as an automobile or marine vessel, using a Global Positioning System that receives GPS signals from two or more GPS satellites. A GPS antenna, GPS signal receiver/processor, a paging responder, a cellular telephone ...


6
Glenn C Steiner, Lloyd H Banta, Matthew M Trask: Personal digital location assistant including a memory cartridge, a GPS smart antenna and a personal computing device. Trimble Navigation, David R Gildea, June 18, 1996: US05528248 (370 worldwide citation)

A Personal Digital Location Apparatus for displaying a geographical location as an icon on a map. The apparatus includes a GPS Smart Antenna for determining the geographical location, a personal computing device including a display, a processing system including a standard software operating system ...


7
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 (344 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 ...


8
James M Janky, John F Schipper: Location of emergency service workers. Trimble Navigation, John Schipper, September 3, 1996: US05552772 (340 worldwide citation)

Method and apparatus for monitoring the present location of an emergency or general serviceperson, such as a firefighter or a hazardous materials spill clean-up specialist, assigned to perform emergency services at a designated site. The site diameter can be as small as a few meters or as large as s ...


9
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 (324 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 ...


10
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 (320 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 ...