Data processing: vehicles – navigation – and relative location – Navigation – Employing position determining equipment
Reexamination Certificate
2005-01-18
2005-01-18
Black, Thomas G. (Department: 3663)
Data processing: vehicles, navigation, and relative location
Navigation
Employing position determining equipment
C340S995190, C342S357490, C709S200000
Reexamination Certificate
active
06845322
ABSTRACT:
Method and system for a distributed navigation system. The system comprises a client integrated with a mobile communication device (e.g. PDA, cellular telephone, etc.) and a server communicating via wireless carriers and the Internet. In one embodiment, the server obtains a user's initial position, a user-designated destination, and calculates a nominal route from the user's initial position to the destination. If a deviation from the nominal route is detected, the reroute tasks are divided between the server and the client according to a corridor area surrounding the nominal route. Mapping information related to the corridor area is stored in the client, and the amount of the stored mapping information depends on the storage and/or processing capabilities of the client.
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Chao Yi-Chung
Jin Haiping
Rennard Robert
Black Thomas G.
Hu Irene Y.
Televigation, Inc.
To Tuan C
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