Touch sensing

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United States of America Patent

PATENT NO 9760192
APP PUB NO 20130147732A1
SERIAL NO

13671389

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A method and apparatus varying, by interval, a frequency of a drive signal applied to one electrode of each of a plurality of electrode pairs, select a frequency corresponding to the frequency of the drive signal, monitor changes in capacitance of each of the electrode pairs through receive signals at the selected frequency, from the other electrode of each of the plurality of electrode pairs; and determine a position of at least two objects, which are simultaneously on a touch device, according to the monitored capacitance changes.

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Patent Owner(s)

  • CYPRESS SEMICONDUCTOR CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Birch, Robert Michael Seattle, US 3 47
Peterson, Jonathan R Everett, US 27 223

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