Water immune keypad
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United States of America Patent
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May 8, 2018
Issued Date -
N/A
app pub date -
Jun 9, 2015
filing date -
Jun 12, 2014
priority date (Note) -
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Abstract
A keyless entry system for an automobile includes a capacitive touch screen having at least one drive line and at least one sense line, the drive and sense lines defining a plurality of touch detection nodes. The touch screen is associated with an exterior surface of the automobile. A control circuit coupled to the touch screen is configured to detect proximity of a stimulus to the touch detection nodes. The control circuit provides a control output to a lock or latch controller when the control circuit determines that the stimulus has been placed proximate the touch detection nodes according to predetermined criteria.
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