- 专利标题: Device and method for recognizing fingerprint
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申请号: US15636937申请日: 2017-06-29
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公开(公告)号: US10546192B2公开(公告)日: 2020-01-28
- 发明人: Zhongsheng Jiang , Chuanshun Ji , Gang Wang
- 申请人: Beijing Xiaomi Mobile Software Co., Ltd.
- 申请人地址: CN Beijing
- 专利权人: Beijing Xiaomi Mobile Software Co., Ltd.
- 当前专利权人: Beijing Xiaomi Mobile Software Co., Ltd.
- 当前专利权人地址: CN Beijing
- 代理机构: Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P.
- 优先权: CN201610511858 20160630
- 主分类号: G06K9/28
- IPC分类号: G06K9/28 ; G06K9/00 ; A61B5/1172
摘要:
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.
公开/授权文献
- US20180005030A1 DEVICE AND METHOD FOR RECOGNIZING FINGERPRINT 公开/授权日:2018-01-04
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