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US07847614B2 Switch noise reduction device and method using counter 有权
开关降噪装置及方法采用计数器

Switch noise reduction device and method using counter
Abstract:
A switch de-bouncing device includes a majority counter that counts samples generated by a sampler sampling a switch output where a counter value is incremented for each sample indicating a first switch state and decremented for each sample indicating a second switch state of the switch. A controller determines that the switch is in the first switch state when the counter value is above a first state threshold and is in the second switch state when the counter value is below a second state threshold.
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