WO2018095148A1 - 一种基于触摸显示屏的指纹识别装置及其***、方法 - Google Patents

一种基于触摸显示屏的指纹识别装置及其***、方法 Download PDF

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WO2018095148A1
WO2018095148A1 PCT/CN2017/105323 CN2017105323W WO2018095148A1 WO 2018095148 A1 WO2018095148 A1 WO 2018095148A1 CN 2017105323 W CN2017105323 W CN 2017105323W WO 2018095148 A1 WO2018095148 A1 WO 2018095148A1
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fingerprint
module
display screen
mobile terminal
touch display
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PCT/CN2017/105323
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French (fr)
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焦涛
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捷开通讯(深圳)有限公司
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
    • G06F21/31—User authentication
    • G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/1347—Preprocessing; Feature extraction

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  • the invention relates to a fingerprint identification technology, in particular to a fingerprint recognition device based on a touch display screen, a system and a method thereof.
  • the touch display screen is widely used in mobile terminals, and is an inductive liquid crystal display device capable of receiving input signals such as contacts.
  • a finger or other conductor is close to the capacitive sensing sensor, since the human body is equivalent to a grounded conductor, the finger and the finger A finger capacitance is formed between the inductive sensors, and the IC can locate by recognizing the capacitance value.
  • the existing fingerprint identification components are all present in the mobile terminal in a single component, which not only increases the cost, but also increases the probability of damage.
  • the present invention provides a fingerprint recognition device based on a touch display screen and a system and method thereof, so that the fingerprint recognition component is replaced with a touch display screen, thereby reducing production costs.
  • the invention provides a touch screen display-based fingerprint recognition device, comprising a fingerprint recognition component disposed on a mobile terminal, the fingerprint recognition component is a touch display screen, and the touch display screen is processed by an I2C bus and a processor of the mobile terminal. Connect communication.
  • the touch display screen is disposed at a front end of the camera module of the mobile terminal.
  • the invention provides a fingerprint recognition system based on a touch screen display, the fingerprint identification system comprises a fingerprint collection module arranged on the mobile terminal, the fingerprint collection module is a touch display screen, and the touch display screen is set on the camera module of the mobile terminal.
  • the fingerprint identification system comprises a fingerprint collection module arranged on the mobile terminal, the fingerprint collection module is a touch display screen, and the touch display screen is set on the camera module of the mobile terminal.
  • the touch display screen is configured to collect different capacitance values of the respective positions generated by the finger pressing the touch display screen, and convert the capacitance value into position information and send the information to the fingerprint extraction module;
  • the fingerprint extraction module obtains the location information, draws the fingerprint image, and sends the fingerprint image to the fingerprint identification module;
  • the fingerprint identification module is configured to: after extracting the feature of the fingerprint image, matching and identifying the feature of the fingerprint information in the fingerprint library, and transmitting the result of the identification to the control module;
  • the control module unlocks the screen of the mobile terminal according to the recognized result.
  • the fingerprint extraction module is further configured to perform filter correction on the fingerprint image.
  • the fingerprint identification system further includes a fingerprint preset module, configured to enter new fingerprint information for unlocking the mobile terminal.
  • control module is further configured to: when the result of the identification is that there is no matching fingerprint information in the fingerprint database, the control module does not unlock the screen of the mobile terminal and waits for the next result.
  • the invention also provides a fingerprint recognition method based on a touch screen display, wherein: the method comprises the following steps:
  • Step 1 S01 the fingerprint surface of the user's finger is overlaid on the touch display screen, and the touch screen displays the capacitance values of the different positions generated by the finger pressing the touch display screen, and converts the capacitance values into position information and sends the information to the fingerprint extraction module;
  • Step 2 The fingerprint extraction module draws a fingerprint image according to the location information, and sends the fingerprint image to the fingerprint identification module;
  • Step 3 S03, the fingerprint identification module extracts the features of the fingerprint image and matches and identifies the features of the fingerprint information in the fingerprint database, and sends the identified result to the control module;
  • Step 4 The control module unlocks the screen of the mobile terminal according to the result.
  • the fingerprint image is filtered and corrected.
  • the control module does not unlock the screen of the mobile terminal and waits for the next result.
  • the invention reduces the cost by replacing the fingerprint recognition component with the touch display screen; and the touch display screen as the protective cover of the camera module not only reduces the components, but further reduces the cost.
  • Figure 1 is a schematic view of the structure of the present invention.
  • FIG. 2 is a block diagram of the system of the present invention.
  • FIG. 3 is a system flow diagram of the present invention.
  • FIG. 4 is a schematic structural view of a specific installation position of the touch display screen of the present invention.
  • a touch screen display-based fingerprint recognition device of the present invention includes a fingerprint recognition component disposed on a mobile terminal, the fingerprint recognition component is a touch display screen 1 , and the touch display screen 1 is connected via an I2C bus.
  • the processor of the mobile terminal connects to communicate, thereby realizing the input of the location information of the fingerprint.
  • the touch display screen 1 may be a screen of an existing mobile terminal or a touch display screen.
  • FIG. 4 it is a specific setting position of the touch display screen 1 of the present invention.
  • the touch display screen 1 is separately provided, which can be conveniently used, and the touch display screen 1 is disposed at the mobile terminal.
  • the rear case 3 is located at the front end of the camera module 2 (the dotted line in the figure), which replaces the protective cover of the existing camera module 2, reduces components, further reduces the cost, and is convenient for one-hand operation.
  • a fingerprint recognition system based on a touch screen display system includes a fingerprint collection module disposed on a mobile terminal, the fingerprint collection module is a touch display screen, and the touch display screen is disposed on the mobile terminal.
  • the touch display screen is configured to collect different capacitance values of the respective positions generated by the finger pressing the touch display screen, and convert the capacitance value into position information and send the information to the fingerprint extraction module;
  • the fingerprint extraction module obtains the location information, draws the fingerprint image, and sends the fingerprint image to the fingerprint recognition module. Piece;
  • the fingerprint identification module is configured to: after extracting the feature of the fingerprint image, matching and identifying the feature of the fingerprint information in the fingerprint library, and transmitting the result of the identification to the control module;
  • the control module unlocks the screen of the mobile terminal according to the recognized result.
  • the fingerprint extraction module is further configured to perform filter correction on the fingerprint image, and the filter correction is implemented by using a conventional image filtering method, which is not specifically limited herein.
  • the fingerprint identification system further includes a fingerprint preset module, configured to enter new fingerprint information for unlocking the mobile terminal, and implement fingerprint information in the fingerprint library for the first time.
  • the control module is further configured to: when the result of the identification is that there is no matching fingerprint information in the fingerprint database, the control module does not unlock the screen of the mobile terminal and waits for the next result.
  • the touch display screen can share an I2C bus and a driving unit with the screen of the mobile terminal, wherein the ID of the touch display screen can be set to 1, and the screen ID of the mobile terminal is set to 0; specifically, when the finger presses the touch display screen After 1 , the touch display screen is awakened, the processor of the mobile terminal recognizes the activation signal of ID1, and the fingerprint recognition system is enabled for fingerprint recognition. When the matching and recognition are completed, the mobile terminal unlocks the screen, and the processor turns off the fingerprint recognition system and converts to mobile.
  • the screen of the terminal works, and the user can perform related screen operations.
  • a touch screen display-based fingerprint recognition method of the present invention includes the following steps:
  • Step 1 S01 the fingerprint surface of the user's finger is overlaid on the touch display screen, and the touch screen displays the capacitance values of the different positions generated by the finger pressing the touch display screen, and converts the capacitance values into position information and sends the information to the fingerprint extraction module;
  • Step 2 The fingerprint extraction module draws a fingerprint image according to the location information, and sends the fingerprint image to the fingerprint identification module;
  • Step 3 S03, the fingerprint identification module extracts the features of the fingerprint image and matches and identifies the features of the fingerprint information in the fingerprint database, and sends the identified result to the control module;
  • Step 4 The control module unlocks the screen of the mobile terminal according to the result.
  • the fingerprint extraction module draws the fingerprint image
  • the fingerprint image is filtered and corrected.
  • the control module When the result of the recognition is that there is no matching fingerprint information in the fingerprint library, the control module does not unlock the screen of the mobile terminal and waits for the next result.
  • the filter correction is specifically to suppress the noise of the target image under the condition that the image detail features are retained as much as possible.
  • the capacitive screen of the prior art is adopted, and since the touch screen has good light transmittance, it does not affect the imaging of the camera module.

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  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Security & Cryptography (AREA)
  • Human Computer Interaction (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Multimedia (AREA)
  • Computer Hardware Design (AREA)
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Abstract

一种基于触摸显示屏的指纹识别装置，包括设于移动终端上的指纹识别组件，所述指纹识别组件为触摸显示屏（1），所述触摸显示屏经I2C总线与移动终端的处理器连接通信。一种指纹识别***，包括触摸显示屏（1）、指纹提取模块、指纹识别模块、控制模块。一种指纹识别方法。与现有技术相比，通过将指纹识别组件替换为触摸显示屏（1），从而降低了成本；同时将触摸显示屏作为摄像头模组（2）的保护盖，不仅减少了部件，而且进一步降低了成本。

Description

一种基于触摸显示屏的指纹识别装置及其***、方法 技术领域
本发明涉及一种指纹识别技术，特别是一种基于触摸显示屏的指纹识别装置及其***、方法。
背景技术
目前，触摸显示屏被广泛应用于移动终端，是一种可接收触头等输入讯号的感应式液晶显示装置，当手指或其它导体靠近电容感应传感器时，由于人体相当于接地的导体，手指与感应传感器之间形成了一个手指的电容，IC通过识别定位这个电容值就能定位。
现有的指纹识别组件均为一个单独的部件存在于移动终端内，这样不仅增加成本，而且也增加了损坏的机率。
发明内容
为克服现有技术的不足，本发明提供一种基于触摸显示屏的指纹识别装置及其***、方法，使得将指纹识别组件替换为触摸显示屏，从而降低生产成本。
本发明提供了一种基于触摸显示屏的指纹识别装置，包括设于移动终端上的指纹识别组件，所述指纹识别组件为触摸显示屏，所述触摸显示屏经I2C总线与移动终端的处理器连接通信。
进一步地，所述触摸显示屏设于移动终端的摄像头模组的前端。
本发明提供了一种基于触摸显示屏的指纹识别***，该指纹识别***包括设于移动终端上的指纹采集模块，所述指纹采集模块为触摸显示屏，触摸显示屏设于移动终端的摄像头模组前端；
触摸显示屏，用于采集手指按压触摸显示屏所产生的各个位置不同的电容值，并将电容值转换为位置信息发送至指纹提取模块；
指纹提取模块，获取这些位置信息后绘制指纹图像并发送至指纹识别模块；
指纹识别模块，用于提取指纹图像的特征后与指纹库中的指纹信息的特征进行匹配以及识别，将识别的结果发送至控制模块；
控制模块，根据识别的结果解锁移动终端的屏幕。
进一步地，所述指纹提取模块，还用于对指纹图像进行滤波矫正。
进一步地，所述指纹识别***还包括指纹预设模块，用于录入解锁移动终端的新指纹信息。
进一步地，所述控制模块，还用于当识别的结果为在指纹库中没有存在匹配的指纹信息时，控制模块不对移动终端的屏幕进行解锁并等待下一次结果。
本发明还提供了一种基于触摸显示屏的指纹识别方法，其中：该方法包括如下步骤：
步骤一S01、用户手指指纹面覆盖在触摸显示屏上，触摸显示屏采集手指按压触摸显示屏所产生的各个位置不同的电容值，并将这些电容值转换为位置信息发送至指纹提取模块；
步骤二S02、指纹提取模块根据位置信息绘制出指纹图像，并将指纹图像发送至指纹识别模块；
步骤三S03、指纹识别模块对指纹图像的特征进行提取并于指纹库中的指纹信息的特征进行匹配以及识别，将识别的结果发送至控制模块；
步骤四S04、控制模块根据结果解锁移动终端的屏幕。
进一步地，所述指纹提取模块绘制出指纹图像后，对指纹图像进行滤波矫正。
进一步地，当识别的结果为在指纹库中没有存在匹配的指纹信息时，控制模块不对移动终端的屏幕进行解锁并等待下一次结果。
本发明与现有技术相比，通过将指纹识别组件替换为触摸显示屏，从而降低了成本；同时将触摸显示屏作为摄像头模组的保护盖，不仅减少了部件，而且进一步降低了成本。
附图说明
图1是本发明结构示意图。
图2是本发明的***框图。
图3是本发明的***流程图。
图4是本发明触摸显示屏的具体设置位置的结构示意图。
具体实施方式
下面结合附图和实施例对本发明作进一步详细说明。
如图1所示，本发明的一种基于触摸显示屏的指纹识别装置，包括设于移动终端上的指纹识别组件，所述指纹识别组件为触摸显示屏1，触摸显示屏1经I2C总线与移动终端的处理器连接通信，从而实现了指纹的位置信息的输入。
本发明中触摸显示屏1可以为现有移动终端的屏幕或者是另设一个触摸显示屏。
优选地，如图4所示，为本发明触摸显示屏1的具体设置位置，在该实施例中，触摸显示屏1为另设，这样能够方便使用，所述触摸显示屏1设置在移动终端的后壳3上位于摄像头模组2(图中虚线部分)的前端，从替代现有的摄像头模组2的保护盖，减少了部件，进一步降低成本，而且便于单手操作。
如图2所示，一种基于触摸显示屏的指纹识别***，该指纹识别***包括设于移动终端上的指纹采集模块，所述指纹采集模块为触摸显示屏，触摸显示屏设于移动终端的摄像头模组前端；
触摸显示屏，用于采集手指按压触摸显示屏所产生的各个位置不同的电容值，并将电容值转换为位置信息发送至指纹提取模块；
指纹提取模块，获取这些位置信息后绘制指纹图像并发送至指纹识别模 块；
指纹识别模块，用于提取指纹图像的特征后与指纹库中的指纹信息的特征进行匹配以及识别，将识别的结果发送至控制模块；
控制模块，根据识别的结果解锁移动终端的屏幕。
所述指纹提取模块，还用于对指纹图像进行滤波矫正，滤波矫正采用常规的图像滤波方法实现，在此不做具体限定。
所述指纹识别***还包括指纹预设模块，用于录入解锁移动终端的新指纹信息，实现首次使用或替换指纹库中的指纹信息。
所述控制模块，还用于当识别的结果为在指纹库中没有存在匹配的指纹信息时，控制模块不对移动终端的屏幕进行解锁并等待下一次结果。
本发明中触摸显示屏可与移动终端的屏幕共用一条I2C总线以及驱动单元，其中可将触摸显示屏的ID设置为1，移动终端的屏幕ID设置为0；具体为，当手指按压触摸显示屏1后，触摸显示屏被唤醒，移动终端的处理器识别到ID1的激活信号，启用指纹识别***进行指纹识别，当完成匹配以及识别后，移动终端解锁屏幕，处理器关闭指纹识别***转换为移动终端的屏幕工作，用户可进行相关的屏幕操作。
如图3所示，本发明的一种基于触摸显示屏的指纹识别方法，该方法包括如下步骤：
步骤一S01、用户手指指纹面覆盖在触摸显示屏上，触摸显示屏采集手指按压触摸显示屏所产生的各个位置不同的电容值，并将这些电容值转换为位置信息发送至指纹提取模块；
步骤二S02、指纹提取模块根据位置信息绘制出指纹图像，并将指纹图像发送至指纹识别模块；
步骤三S03、指纹识别模块对指纹图像的特征进行提取并于指纹库中的指纹信息的特征进行匹配以及识别，将识别的结果发送至控制模块；
步骤四S04、控制模块根据结果解锁移动终端的屏幕。
所述指纹提取模块绘制出指纹图像后，对指纹图像进行滤波矫正。
当识别的结果为在指纹库中没有存在匹配的指纹信息时，控制模块不对移动终端的屏幕进行解锁并等待下一次结果。
本发明中滤波矫正具体为在尽量保留图像细节特征的条件下对目标图像的噪声进行抑制。
本发明中触摸显示屏采用现有技术的电容屏，由于触摸显示屏具有良好的透光率，因此不会对摄像头模组的成像造成影响。
虽然已经参照特定实施例示出并描述了本发明，但是本领域的技术人员将理解：在不脱离由权利要求及其等同物限定的本发明的精神和范围的情况下，可在此进行形式和细节上的各种变化。

Claims (8)

  1. 一种基于触摸显示屏的指纹识别***，其中：该指纹识别***包括设于移动终端上的指纹采集模块，所述指纹采集模块为触摸显示屏，触摸显示屏设于移动终端的摄像头模组前端；
    触摸显示屏，用于采集手指按压触摸显示屏所产生的各个位置不同的电容值，并将电容值转换为位置信息发送至指纹提取模块；
    指纹提取模块，用于获取这些位置信息后绘制指纹图像并发送至指纹识别模块；
    指纹识别模块，用于提取指纹图像的特征后与指纹库中的指纹信息的特征进行匹配以及识别，将识别的结果发送至控制模块；
    控制模块，根据识别的结果解锁移动终端的屏幕；
    所述指纹提取模块，还用于对指纹图像进行滤波矫正。
  2. 根据权利要求1所述的基于触摸显示屏的指纹识别***，其中：所述指纹识别***还包括指纹预设模块，用于录入解锁移动终端的新指纹信息。
  3. 根据权利要求2所述的基于触摸显示屏的指纹识别***，其中：所述控制模块，还用于当识别的结果为在指纹库中没有存在匹配的指纹信息时，控制模块不对移动终端的屏幕进行解锁并等待下一次结果。
  4. 一种基于触摸显示屏的指纹识别装置，包括设于移动终端上的指纹识别组件，其中：所述指纹识别组件为触摸显示屏，所述触摸显示屏经I2C总线与移动终端的处理器连接通信。
  5. 根据权利要求4所述的基于触摸显示屏的指纹识别装置，其中：所述触摸显示屏设于移动终端的摄像头模组的前端。
  6. 一种基于触摸显示屏的指纹识别方法，其中：该方法包括如下步骤：
    步骤一S01、用户手指指纹面覆盖在触摸显示屏上，触摸显示屏采集手指按压触摸显示屏所产生的各个位置不同的电容值，并将这些电容值转换为位置 信息发送至指纹提取模块；
    步骤二S02、指纹提取模块根据位置信息绘制出指纹图像，并将指纹图像发送至指纹识别模块；
    步骤三S03、指纹识别模块对指纹图像的特征进行提取并于指纹库中的指纹信息的特征进行匹配以及识别，将识别的结果发送至控制模块；
    步骤四S04、控制模块根据结果解锁移动终端的屏幕。
  7. 根据权利要求6所述的基于触摸显示屏的指纹识别方法，其中：所述指纹提取模块绘制出指纹图像后，对指纹图像进行滤波矫正。
  8. 根据权利要求6所述的基于触摸显示屏的指纹识别方法，其中：当识别的结果为在指纹库中没有存在匹配的指纹信息时，控制模块不对移动终端的屏幕进行解锁并等待下一次结果。
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