06946978 is referenced by 397 patents and cites 53 patents.

An imaging system suitable for use with a vehicle based global positioning system includes an imaging sensor and a control. The imaging sensor is positioned at the vehicle and may face generally forwardly with respect to the direction of travel of the vehicle. The control may be operable to provide a record of vehicle movement since the last position data derived from the vehicle based global positioning system. The imaging system may also or otherwise be suitable for use with a vehicle based magnetic compass system. The imaging system may be operable in combination with a magnetic field sensor of the magnetic compass system to provide a substantially continuously calibrated heading indication, which is substantially resistant to local magnetic anomalies and changes in vehicle inclination. The imaging sensor may be associated with one or more other accessories of the vehicle.

Title
Imaging system for vehicle
Application Number
10/422378
Publication Number
6946978 (B2)
Application Date
April 24, 2003
Publication Date
September 20, 2005
Inventor
Kenneth Schofield
Holland
MI, US
Agent
Van Dyke Gardner Linn & Burkhart
Assignee
Donnelly Corporation
MI, US
IPC
G08G 001/123
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