Positioning of mobile wireless terminal

Details Positioning of mobile wireless terminal Positioning of mobile wireless terminal

2008-01-15

2008-01-15

Tarcza, Thomas H. (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Directive

Beacon or receiver

Reexamination Certificate

active

07319428

ABSTRACT:
A wireless apparatus for determining a phase difference of a received RF signal, and method. The apparatus includes antennas displaced from each other by a predetermined distance for receiving an RF signal. The apparatus also includes an exclusive OR (EXOR) circuit comparing binary signals derived from the received RF signal that are associated with respective antennas. An absolute phase difference is based on a pulse width of the comparison.

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Office Action (Notice of Reason for Refusal) for corresponding Japanese application.
Second Final Office Action with English translation, transmitted on Apr. 3, 2007 from the Japan Patent Office, corresponding to Japanese Application 2002-116808.

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