Self-optimizing touch pad sensor circuit

Details Self-optimizing touch pad sensor circuit Self-optimizing touch pad sensor circuit

H - Electricity

04

L

340/178, 354/83,

H04L 5/00 (2006.01)

Patent

CA 1147061

ABSTRACT OF THE DISCLOSURE A plurality of capacitive touch pad sensors are multiplexed to the input of a common charge transfer analog-to- digital converter (CTAD) under the control of a control logic circuit. The no-touch digital output of each touch pad is stored in a memory. The touch pads are then sequentially addressed and their output level is digitized in the CTAD and the digital output of each touch pad is compared to its no-touch value stored in the memory. If the digital value read is sufficiently different from the no-touch memorized value, a touch-detection signal is given. The no-touch digital reading in the memory is periodically updated, by a count of only one at most, if the updated no-touch value differs from the no-touch value in the memory.

319580

Affiliated with

Also associated with

Rating

Self-optimizing touch pad sensor circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Self-optimizing touch pad sensor circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Self-optimizing touch pad sensor circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-518253