GEAR DETECTION CIRCUIT AND WRIST WATCH
Number of patents in Portfolio can not be more than 2000
United States of America
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Issued Date -
Feb 13, 2020
app pub date -
Oct 22, 2019
filing date -
Oct 22, 2019
priority date (Note) -
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Abstract
A gear position detection device for detecting a gear having multiple fingers is provided. The detection device includes a substrate, a control chip, and a drive line, a sense line, a first drive electrode, a second drive electrode, a first sense electrode and a second sense electrode formed on the substrate. The first and second drive electrodes are connected to the drive line to receive a drive signal. The first and second sense electrodes form induced electric field respectively with the first and second drive electrodes, and respectively output a first detected signal and a second detected signal via the sense line. The control chip outputs the drive signal via the drive line, receives the first and second detected signals via the sense line, calculate a differential signal between the first and second detected signals, and count a number of high levels of the differential signal to count a finger number.
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