FINGERPRINT READING SYSTEM

摘要

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.

主权项

1. A fingerprint reading system, comprising:
a camera module having a detection unit, an image capture unit, a liquid lens unit, and an illumination unit; a control module electrically connected to the camera module to control the image capture unit, the liquid lens unit, and the illumination unit; and a signal processing module; wherein when the detection unit detects a start signal, the control module initiates the image capture unit, the liquid lens unit, and the illumination unit, the liquid lens unit adjusts the focus distance of the image capture unit across an entire scanning region, the image capture unit captures a plurality of subsequent images as the liquid lens unit adjusts the focus distance across the entire scanning region to scan fingerprints, and the signal processing module selects one image with the highest quality fingerprint image from the plurality of images captured by the image capture unit and converts the highest quality image as a standard fingerprint file.