Touch detection method and system for a touch sensor
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United States of America Patent
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Issued Date -
Jan 24, 2008
app pub date -
Jul 19, 2006
filing date -
Jul 19, 2006
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A a touch sensor including a keyboard having a key defining a touch sensing location, wherein the key is responsive to at least one of capacitive and electro-magnetic interactions with a user during a touch event includes control circuitry associated with the key, wherein the control circuitry outputs a control signal, and wherein an amplitude of the control signal is representative of an amount of interaction between the user and the key during a touch event. A controller is connected to the control circuitry and analyzes a variation in the amplitude of the control signal over a time period to identify the touch event.
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