Fingerprint reading system
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United States of America Patent
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Aug 30, 2016
Grant Date -
Jun 18, 2015
app pub date -
Dec 17, 2014
filing date -
Dec 18, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
A fingerprint reading system includes a camera module, a control module, and a signal processing module. The camera module has a detection unit, an image capture unit, a liquid lens unit, and an illumination unit. Control module is electrically connected to camera module for controlling the internal components of camera module. When the detection unit detects a start signal, the control module activates the image capture unit, liquid lens unit, and illumination unit. The liquid lens unit adjusts the focus distance across an entire scanning region and scans fingerprint. The image capture unit adjusts the focus distance across the entire scanning region through the liquid lens unit and scans fingerprint to capture multiple photos. The signal processing module selects the sharpest photo from the multiple photos to convert to a fingerprint image.
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