TOUCH SENSING APPARATUS FOR GENERATING TOUCH SENSING RESULT ACCORDING TO DIFFERENTIAL SIGNAL OF MUTUAL CAPACITANCE TRIGGERED BY TOUCH EVENT

A touch sensing apparatus includes at least one sensing key and a processing circuit. Each of the sensing key includes a signal receiving component for receiving a driving signal, a first sensing block and a reference block. The first sensing block is coupled to the signal receiving component, and a...

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Bibliographic Details
Main Authors WU TUNG-KE, CHANG CHING-HSIANG
Format Patent
LanguageEnglish
Published 15.03.2012
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:A touch sensing apparatus includes at least one sensing key and a processing circuit. Each of the sensing key includes a signal receiving component for receiving a driving signal, a first sensing block and a reference block. The first sensing block is coupled to the signal receiving component, and arranged to generate a first sensing signal according to a touch event and the driving signal. The reference block is coupled to the signal receiving component, and arranged to generate a reference signal according to the touch event and the driving signal. The processing circuit is coupled to the sensing key, and arranged to provide the driving signal and receive the first sensing signal and reference signal, generate a sensing output of the sensing key according to the reference signal and first sensing signal generated by the sensing key, and generate the touch sensing result according to the sensing output.
Bibliography:Application Number: US201113226506