Touch sensor
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United States of America Patent
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N/A
Issued Date -
Jan 10, 2008
app pub date -
Jul 7, 2006
filing date -
Jul 7, 2006
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A touch sensor includes a keyboard having a key defining a touch sensing location, and control circuitry associated with the key. The control circuitry includes a transistor, and the key controls the transistor based on a touch event. A pulse signal generator is connected to the control circuitry and generates pulsed signals for transmission to the control circuitry. The pulsed signals power the transistor, and the transistor outputs a touch signal when a touch event occurs at the associated key and the transistor outputs a non-touch signal when no touch event occurs at the associated key. An analyzer is connected to the control circuitry and receives from the transistor one of the touch signal indicating the touch event and the non-touch signal indicating the no touch event.
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