CAPACITIVE TOUCH KEY AND THE OPERATING METHOD THEREOF
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United States of America Patent
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Issued Date -
Oct 10, 2013
app pub date -
Mar 12, 2013
filing date -
Apr 5, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A capacitive touch key is disclosed. The capacitive touch key includes a capacitive key, generating a first capacitance value when a user is close to the capacitive key; a mechanical key connected with the capacitive key; a capacitor connected with the mechanical key and having a second capacitance value; and a processing unit connected with the capacitive key, wherein the processing unit detects the first capacitance value when the mechanical key is not pressed by a user, and the processing unit detects the first capacitance value and the second capacitance value when the mechanical key is pressed by a user.
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