Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
October 2, 2007
Patent Application Number
10750291
Date Filed
December 31, 2003
Patent Citations Received
Patent Primary Examiner
Patent abstract
A touch sensing device includes a plurality of sensors and an emitting transducer coupled to a touch panel. The transducer induces bending waves in the touch panel. The sensors sense bending waves in the touch panel and generate a bending wave signal responsive to the sensed bending waves. A controller identifies an untouched condition signal responsive to the induced bending waves. The controller compares the untouched condition signal to the bending wave signal, and detects a touch on the touch panel based on the comparison.
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