06658354 is referenced by 110 patents.

An interruption free navigator includes an inertial measurement unit, a north finder, a velocity producer, a positioning assistant, a navigation processor, an altitude measurement, an object detection system, a wireless communication device, and a display device and map database. Output signals of the inertial measurement unit, the velocity producer, the positioning assistant, the altitude measurement, the object detection system, and the north finder are processed to obtain highly accurate position measurements of the person. The user's position information can be exchanged with other users through the wireless communication device, and the location and surrounding information can be displayed on the display device by accessing a map database with the person position information.

Title
Interruption free navigator
Application Number
10/98964
Publication Number
6658354 (B2)
Application Date
March 15, 2002
Publication Date
December 2, 2003
Inventor
Ching Fang Lin
Simi Valley
CA, US
Agent
David and Raymond Patent Group
US
Agent
Raymond Y Chan
US
Assignee
American GNC Corporation
CA, US
IPC
G01C 21/00
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