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A fingerprint information acquisition method and a fingerprint identification device

A technology of fingerprint identification and fingerprint information, which is applied in the direction of acquiring/organizing fingerprints/palmprints, character and pattern recognition, and input/output process of data processing, etc. It can solve the problems of affecting fingerprint identification performance and low accuracy of fingerprint information, etc. Achieve the effect of improving fingerprint recognition performance, improving accuracy, and accurate fingerprint information

Active Publication Date: 2019-04-30
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Since the pixel light will interfere with each other, which is called afterglow interference, there will be interference signals in the optical signal received by the PD, and the accuracy of the obtained fingerprint information is low, which affects the performance of fingerprint recognition.

Method used

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  • A fingerprint information acquisition method and a fingerprint identification device
  • A fingerprint information acquisition method and a fingerprint identification device
  • A fingerprint information acquisition method and a fingerprint identification device

Examples

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Embodiment Construction

[0068] The present application provides a method for acquiring fingerprint information, which is used to improve the accuracy of acquiring fingerprint information and enhance fingerprint identification performance.

[0069] The technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Apparently, the described embodiments are only some of the embodiments of this application, not all of them. The method for acquiring fingerprint information in this application is applicable to terminal devices such as smart phones, tablet computers, notebook computers, and vehicle-mounted devices, and is not limited to the above-mentioned terminal devices.

[0070] figure 1 A system framework schematic diagram of an optical fingerprint recognition system provided for the embodiment of the present application. Such as figure 1 As shown, the optical fingerprint identification system includes: fingerprint scanning...

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Abstract

The embodiment of the invention discloses a terminal display screen scanning method for optical fingerprint identification, which is used for improving the optical fingerprint identification performance. The method comprises the steps that if starting operation on a terminal screen is detected, a first vector set is obtained, the first vector set comprises A data vectors which are mutually orthogonal or mutually quasi-orthogonal, each data vector comprises a plurality of data elements, and A is an integer larger than 1;sequentially using the data elements in each data vector to control the minimum pixel unit in the fingerprint identification area to emit light, controlling light emission of all the minimum pixel units in the fingerprint identification area until light emission control of all the minimum pixel units in the fingerprint identification area is completed, so as to obtain a second vector set corresponding to the fingerprint identification area, and the second vector set carries fingerprint information; and demodulating the second vector set by using the first vector set to obtain all fingerprint information in the fingerprint identification area.

Description

[0001] This application claims the priority of the Chinese patent application with the application number 201710996402.5 and the title of the invention "a terminal display screen scanning method for optical fingerprint identification and related devices" submitted to the China Patent Office on October 20, 2017. The entire contents are incorporated by reference in this application. technical field [0002] The present application relates to the technical field of optical fingerprint identification, and in particular to a method for acquiring fingerprint information for optical fingerprint identification and a fingerprint identification device. Background technique [0003] Fingerprint identification technology involves many technical research fields, and is widely used in work and life. At present, fingerprint recognition technology mainly includes capacitive fingerprint recognition technology, ultrasonic fingerprint recognition technology and optical fingerprint recognition ...

Claims

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Application Information

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IPC IPC(8): G06K9/00
CPCG06V40/1318G06F3/041661G06F2203/04106G06V40/1376G06V40/1335
Inventor 曹华俊袁亮蒋洪睿
Owner HUAWEI TECH CO LTD
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