Wristwatch type cellular phone

Details Wristwatch type cellular phone Wristwatch type cellular phone

2007-10-09

2007-10-09

Urban, Edward F. (Department: 2618)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C455S550100, C455S575100, C455S575600, C455S575700, C379S433100, C368S004000, C368S010000, C368S013000

Reexamination Certificate

active

10710529

ABSTRACT:
A plurality of plane antennas6-1and6-2are embedded in the equipment body section1, and every time occurrence of reception failure is detected by the internal electronics circuit, switching between the antennas used is established. Spatial diversity through selectively switching and using the plurality of plane antennas6-1and6-2is performed. Through this, even when reception sensitivity of one antenna in use deteriorates, good reception sensitivity can be gained through switching to another antenna. Thus, this can avoid inconvenience where calls are cut off.

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patent: 2001045122 (2001-02-01), None
patent: 2001345907 (2001-12-01), None

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