06801159 is referenced by 142 patents.

A perimeter threshold of an area is defined. The location of a device (

102

) is tracked using a first location technology (

108

) when the device (

102

) precedes the perimeter threshold. The location of the device (

102

) is tracked using a second location technology (

100

) when the device (

102

) exceeds the perimeter threshold.

Title
Device for use with a portable inertial navigation system (“PINS”) and method for transitioning between location technologies
Application Number
10/100640
Publication Number
6801159 (B2)
Application Date
March 19, 2002
Publication Date
October 5, 2004
Inventor
Chet A Lampert
Plantation
FL, US
Charles B Swope
Coral Springs
FL, US
Agent
Terri S Hughes
US
Barbara R Doutre
US
Assignee
Motorola
IL, US
IPC
G01S 5/02
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