Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2006-01-03
2006-01-03
Trinh, Sonny (Department: 2687)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S456100, C455S041200
Reexamination Certificate
active
06983146
ABSTRACT:
A location determination method uses location data items that originate at known locations and are passed to, and diffused between, entities by short-range communication. Each location data item received by an entity specifies its originating location and a time value dependent on when it originated from that location. An entity derives its location from received location data items by effecting a weighted combination of the known locations specified in the received location data items, the weighting of the known location specified in each received location data item being dependent on the associated time value.
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Abstract of JP 2001-116820, published Sep. 1999, Derwent, 1 page.
Hewlett--Packard Development Company, L.P.
Santiago-Cordero M.
Trinh Sonny
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