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Finger sensing device with low power finger detection and associated methods
Finger sensing device with low power finger detection and associated methods
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机译:具有低功率手指检测的手指感测装置及相关方法
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摘要
A finger sensing device may include an array of finger sensing electrodes, and a processor cooperating with the array of finger sensing electrodes for operation in a lower power consumption finger detecting mode, and for operation in a higher power consumption reading mode upon detection of a finger. The processor may selectively bus together finger sensing electrodes into at least one group from the array thereof when in the lower power consumption finger detecting mode to thereby detect a finger adjacent the array of finger sensing electrodes. Accordingly, a finger may be accurately detected and while in a low power mode, such as may be particularly beneficial to extend battery life for portable electronic devices.
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