1
James R Scribner, Raymond J Nicholson, Thomas G Brown, Anthony Caracciolo Jr: Tracking system. FaciliTech International Incorporated, Harness Dickey & Pierce, May 7, 1991: US05014206 (452 worldwide citation)

A system used for determining and recording the location of a vehicle during the occurence of predetermined events. The vehicle is equipped with a sensor or sensors which respond to the occurrence of the predetermined events. The sensors are connected to a navigational system which receive positiona ...


2
Cynthia C Martin, Philip R Thrift, Marion C Lineberry: Systems and methods for planning the scheduling travel routes. Texas Instruments Incorporated, W Daniel Swayze Jr, Richard L Donaldson, Leo N Heiting, December 21, 1993: US05272638 (437 worldwide citation)

A method is provided for using a computer to select a travel route based on a selected performance criteria from a plurality of possible travel routes connecting a plurality of destinations. Information is input describing the location of each destination to be visited. For each pair of destinations ...


3
Randall T Brunts: GPS based time determining system and method. Delco Electronics Corporation, Jimmy L Funke, March 3, 1998: US05724316 (411 worldwide citation)

An audio entertainment/navigation system with updated time readings is provided especially for a mobile user. The navigation system receives GPS position information signals which are processed to determine current position latitude and longitude coordinates and direction of travel. A destination da ...


4
Surender K Kenue: Vision method of detecting lane boundaries and obstacles. General Motors Corporation, Howard N Conkey, November 13, 1990: US04970653 (407 worldwide citation)

An image processing method operates on an image from a ccd camera viewing a roadway scene in front of a vehicle to detect lane markers and determine the relationship of the vehicle to the lane. Obstacles in the lane near the vehicle are detected and a warning is given to the driver. The method uses ...


5
David A Wysocki, Paul S Hooper: Real time three dimensional geo-referenced digital orthophotograph-based positioning, navigation, collision avoidance and decision support system. Stroud Stroud Willink Thompson & Howard, January 10, 1995: US05381338 (405 worldwide citation)

Herein is presented a positioning, navigation and collision avoidance system for ships, aircraft, land vehicles and the like, which utilizes a geo-referenced digital orthophotograph data-base and a positioning signal to display upon a computer stereo graphics device a high visibility dynamic photogr ...


6
Hobart R Everett Jr, Gary A Gilbreath, Robin T Laird: Navigational control system for an autonomous vehicle. The United States of America represented by the Secretary of the Navy, Harvey Fendelman, Thomas Glenn Keough, Michael A Kagan, May 5, 1992: US05111401 (349 worldwide citation)

A navigational control system directs an autonomous vehicle to travel along a floor from a first location to a destination within an environment, and includes a propulsion module having a processor that receives navigation control signals for directing the motion of the module and provides position ...


7
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 ...


8
Wei Wen Kao: Correcting GPS position in a hybrid naviation system. Zexel USA, Harold L Burstyn, Thomas R Morrison, February 28, 1995: US05394333 (297 worldwide citation)

A hybrid vehicle navigation system employs both GPS and dead reckoning sensors, working in parallel, to produce a sensed and a calculated position, respectively. The sensed and the calculated positions are compared to a road data base to determine separate correction factors required to correct the ...


9
Paul J Mattaboni: Autonomous mobile robot. Louis Orenbuch, January 20, 1987: US04638445 (296 worldwide citation)

A vision system for a mobile robot employs at least two arrays of sensors for obtaining data on the position and distance of objects in a workspace. One of the sensor arrays is used principally to see near objects and the other array is used principally to see far objects. The two arrays are symmetr ...


10
Thomas H Noonan, John Fisher, Barry Bryant: Autonomous lawn mower. Mobot, Sixbey Friedman Leedom & Ferguson, April 20, 1993: US05204814 (293 worldwide citation)

Disclosed is an automatic, self propelled lawn mower that references its position within a cutting area using electronically stored path and terrain information as a primary navigation system, senses a non magnetic, non-current carrying metallic guide path as a secondary navigation system, senses un ...