Shenzhen Goodix Technology Co., Ltd.

Shenzhen Huiding Technology Co., Ltd.

Hua Zhong

Jinchun Ye

Mengta Yang

Shunzhan Li

Rui Ran

Guangming Zhuo

Jinhui Lin

Jianyang Zhang

Guosheng Chen

Caiwu Ding

Zhipan Wang

A method and an apparatus for calibrating a fingerprint image, and a terminal, are provided. The method for calibrating a fingerprint image includes steps of: obtaining prestored information about a non-fingerprint image; and collecting a fingerprint image, and calibrating the fingerprint image according to the information about the non-fingerprint image. The method can remove a non-fingerprint image part from a collected fingerprint image and improve accuracy of the collected fingerprint image, thereby improving a fingerprint recognition effect.

Method and apparatus for calibrating fingerprint image, and terminal

Devices and methods are provided for recovering from latchup state in fingerprint sensor devices. For example, a disclosed device can be operated to perform operations that include, receiving, at a microcontroller of the fingerprint sensor device, raw sensor data from a sensor array in communication with the microcontroller, comparing the received raw sensor data against a predetermined threshold, and, based at least partly on the comparing, resetting power supplied to the fingerprint sensor device to recover from a latchup state.

Latchup recovery mechanism for fingerprint sensor based on state monitor and handshake

Disclosed are a fingerprint detection device and a mobile terminal. The fingerprint detection apparatus comprises a capacitive fingerprint sensor and a capacitive touch control chip which is electrically connected to the capacitive fingerprint sensor; wherein the capacitive fingerprint sensor is configured to collect fingerprint information and convert the fingerprint information to an analog signal; and the capacitive touch control chip is configured to convert the analog signal to a digital signal, and generate fingerprint image information according to the digital signal. As compared with the dedicated control chip in the related art, the capacitive touch control chip has mature design and manufacture technique, and thus the manufacture and application costs are lower.

Fingerprint detection device and mobile terminal

A reference data updating method and system for a capacitive multi-touch screen are disclosed. The method includes the steps of step A: one-frame sampling touch detection nodes, calculating a difference between sampled data of each touch detection node and corresponding current reference data and saving the difference as detection data to obtain a current detection data frame; step B: judging whether the current detection data frame is a damaged detection data frame; and step C: executing a touch screen reference update processing procedure under abnormal condition if the current detection data frame is a damaged detection data frame; otherwise, executing a touch screen reference update processing procedure under normal condition. The disclosed method and system can be used in capacitive multi-touch screens fabricated with different materials in different processes and having difference specifications to timely and reliably update the reference data, thereby increasing the reliability of the capacitive multi-touch screens.

Method and system for updating reference data of capacitive multi-touch screen

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Guangdong, China

Hua Zhong