Invention Grant
- Patent Title: Device and method for recognizing fingerprint
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Application No.: US15636937Application Date: 2017-06-29
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Publication No.: US10546192B2Publication Date: 2020-01-28
- Inventor: Zhongsheng Jiang , Chuanshun Ji , Gang Wang
- Applicant: Beijing Xiaomi Mobile Software Co., Ltd.
- Applicant Address: CN Beijing
- Assignee: Beijing Xiaomi Mobile Software Co., Ltd.
- Current Assignee: Beijing Xiaomi Mobile Software Co., Ltd.
- Current Assignee Address: CN Beijing
- Agency: Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P.
- Priority: CN201610511858 20160630
- Main IPC: G06K9/28
- IPC: G06K9/28 ; G06K9/00 ; A61B5/1172

Abstract:
A device for recognizing a fingerprint, includes: a fingerprint sensor; at least two moisture detection electrodes disposed within a preset range of the fingerprint sensor; and a processing module coupled to the fingerprint sensor and the at least two moisture detection electrodes. The fingerprint sensor is configured to output a fingerprint signal to the processing module when a user touches the fingerprint sensor and the at least two moisture detection electrodes with a finger. The processing module is configured to acquire a characteristic value which is positively related to an impedance between the at least two moisture detection electrodes when the user touches the fingerprint sensor and the at least two moisture detection electrodes with the finger; determine a fingerprint recognition parameter which matches the characteristic value; and perform fingerprint recognition according to the determined fingerprint recognition parameter and the fingerprint signal.
Public/Granted literature
- US20180005030A1 DEVICE AND METHOD FOR RECOGNIZING FINGERPRINT Public/Granted day:2018-01-04
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