Data processing: vehicles – navigation – and relative location – Navigation – Employing position determining equipment
Reexamination Certificate
2007-05-17
2008-11-11
Jeanglaude, Gertrude Arthur (Department: 3661)
Data processing: vehicles, navigation, and relative location
Navigation
Employing position determining equipment
C701S211000, C340S995130, C340S995190, C342S357490
Reexamination Certificate
active
07451042
ABSTRACT:
The present invention is directed specifically to methods for reducing the bandwidth requirements for broadcasting traffic information to a vehicle navigation system. The traffic information broadcast to the system using the bandwidth conserving methods of the present invention generally includes traffic flow information and traffic incident information. In one embodiment, the vehicle navigation system filters traffic information to a certain range to expedite traffic calculation, to save on processing hardware, and to reduce bandwidth needs. Alternately, bandwidth conservation may be achieved by providing weight factors and threshold prioritizing when a broadcast limit is close to being reached or exceeded. In another embodiment, bandwidth reduction is achieved by not broadcasting free-flow traffic information and/or displaying only traffic information that indicates a traffic problem. Another method of the present invention to reduce bandwidth needs is directed to reducing broadcast of static traffic information.
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Ohki Eric Shigeru
Tamura Kazuya
Uyeki Robert
Duell Mark E.
Honda Motor Co. Ltd.
Jeanglaude Gertrude Arthur
O'Melveny & Myers LLP
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