Method and device for determining a position of a portable...

Details Method and device for determining a position of a portable... Method and device for determining a position of a portable...

2007-06-27

2009-08-18

Tarcza, Thomas H (Department: 3662)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

Reexamination Certificate

active

07577441

ABSTRACT:
A method for determining a position of a portable electronic device is useful for conserving power, processor and bandwidth resources. The method includes detecting at a portable electronic device a first signal received from a local terminal (step605). In response to the first signal, a second signal is transmitted from the device, indicating a proximity of the portable electronic device to the local terminal (step610). Positioning method priority information, which is based on a location of the local terminal and is received from the local terminal in response to the second signal, is then processed at the device (step615). A positioning method priority list based on the positioning method priority information is then processed (step620). Finally, the position of the portable electronic device is determined using a positioning method identified in the positioning method priority list (step625).

REFERENCES:
patent: 6995708 (2006-02-01), Schmidt
patent: 2002/0019698 (2002-02-01), Vilppula et al.
patent: 2004/0092270 (2004-05-01), Banno
patent: 2004/0185870 (2004-09-01), Matsuda
patent: 2006/0178154 (2006-08-01), Farmer
patent: 2007/0279281 (2007-12-01), Oda et al.
patent: 1418439 (2004-12-01), None
patent: 03107708 (2003-12-01), None

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