WO2020191874A1 - 指纹识别方法及移动终端 - Google Patents

指纹识别方法及移动终端 Download PDF

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Publication number
WO2020191874A1
WO2020191874A1 PCT/CN2019/086379 CN2019086379W WO2020191874A1 WO 2020191874 A1 WO2020191874 A1 WO 2020191874A1 CN 2019086379 W CN2019086379 W CN 2019086379W WO 2020191874 A1 WO2020191874 A1 WO 2020191874A1
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WO
WIPO (PCT)
Prior art keywords
fingerprint
block
scanning
sensor matrix
sensors
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2019/086379
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English (en)
French (fr)
Inventor
张洲
蔡育徵
马长文
徐盼
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan China Star Optoelectronics Technology Co Ltd
Original Assignee
Wuhan China Star Optoelectronics Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuhan China Star Optoelectronics Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Technology Co Ltd
Priority to US16/492,170 priority Critical patent/US10984215B2/en
Publication of WO2020191874A1 publication Critical patent/WO2020191874A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06V40/13—Sensors therefor

Definitions

  • This application relates to the field of electronic technology, in particular to a fingerprint identification method and a mobile terminal.
  • fingerprint recognition and unlocking has become a routine configuration on mobile phones.
  • the fingerprint recognition technology used in mobile phones is usually capacitive fingerprint recognition, and the newly emerging optical fingerprint recognition and ultrasonic fingerprint recognition.
  • these fingerprint recognition technologies are all based on fingerprint recognition in a specific part of the mobile phone, such as the home button of the mobile phone and the partial area on the back of the mobile phone.
  • the size of the fingerprint and the area for fingerprint recognition are small, and the convenience is insufficient for use.
  • the full-screen fingerprint unlocking technology has become the focus of research and promotion by major mobile phone manufacturers.
  • the original fingerprint identification technology simply expand the area of the fingerprint recognition area to achieve full-screen fingerprint unlocking.
  • Problems such as slow unlocking speed and high power consumption occur because the full-screen fingerprint recognition technology requires fingerprint recognition and scanning on the entire mobile phone screen. Compared with partial fingerprint scanning, it takes longer and consumes more power.
  • the existing fingerprint recognition method needs to scan the entire fingerprint recognition area. Due to the large scanning area, the fingerprint recognition speed is slow and the power consumption is large. .
  • This application provides a fingerprint identification method applied to a mobile terminal, the mobile terminal includes a fingerprint identification system, the fingerprint identification system includes a sensor matrix, the sensor matrix is an N*M matrix, each row of the sensor matrix It includes M sensors, and each column includes N sensors, where N and M are integers greater than 1.
  • the fingerprint identification method includes the following steps:
  • the fingerprint identification system further includes a multiplexer, the multiplexer includes n independent switch terminals, and the sensor matrix is divided into n regions in rows.
  • the block method is:
  • each switch terminal of the multiplexer controls several rows of sensors in the sensor matrix, and the area composed of the sensors controlled by each switch terminal is One said block.
  • the mobile terminal further includes a touch screen arranged above the fingerprint identification system.
  • the touch screen is arranged above the sensor matrix.
  • the touch screen includes a positioning system
  • the method for detecting the block occupied by a fingerprint includes the following steps:
  • the block occupied by the fingerprint is determined by the sensor occupied by the fingerprint.
  • the fingerprint identification system further includes a scanning system, and the scanning system is connected to the sensor matrix through the multiplexer for providing scanning signals to the sensor matrix.
  • the method of scanning the block occupied by the fingerprint to identify the fingerprint includes the following steps:
  • the sensor in the block occupied by the fingerprint is scanned by the scanning system to identify the fingerprint.
  • the block occupied by the fingerprint includes a first area and a second area, the first area is an area covered by the fingerprint, and the second area is not covered by the fingerprint.
  • the method for scanning the sensor in the block occupied by the fingerprint by the scanning system is:
  • the time taken for the normal fingerprint scanning to complete the scanning of a row of the sensors is 50 microseconds, and the time taken for the fast fingerprint scanning to complete the scanning of a row of the sensors is 5 microseconds.
  • the method of scanning the sensor in the block occupied by the fingerprint through the scanning system is:
  • the time taken for the normal fingerprint scanning to complete the scanning of a row of the sensors is 50 microseconds.
  • This application also provides a mobile terminal, including a fingerprint identification system, the fingerprint identification system including:
  • a sensor matrix for identifying fingerprints the sensor matrix being an N*M matrix, each row of the sensor matrix includes M sensors, and each column includes N sensors, where N and M are integers greater than 1;
  • the multiplexer includes n independent switch terminals.
  • the n independent switch terminals divide the sensor matrix into n blocks in rows, and each block is controlled by one switch terminal. , Where n is an integer greater than 1; and
  • a scanning system which provides a scanning signal to the block through the switch terminal to identify fingerprints
  • Each of the switch terminals has two states of “on” and “off”, and the scanning system provides a scan signal to the block through the switch terminal whose state is "on” to identify the fingerprint.
  • the mobile terminal further includes a touch screen, the touch screen is arranged above the fingerprint identification system, the touch screen includes a positioning system, the positioning system is used to detect the fingerprint on the touch screen Coordinate position
  • the touch screen is arranged above the sensor matrix.
  • the multiplexer controls the corresponding switch terminal to turn on according to the coordinate position of the fingerprint on the touch screen.
  • the number of rows of the sensors included in each block is the same.
  • some of the blocks include the same number of rows of the sensors.
  • the fingerprint identification method and mobile terminal provided by the present application divide the sensor matrix used for fingerprint identification into a plurality of blocks according to rows, and each block contains several rows of sensors in the sensor matrix, and each block passes independently When performing fingerprint identification scanning, only the area occupied by the fingerprint is scanned, and the area not occupied by the fingerprint is not scanned, thereby greatly reducing the scanning area, shortening the scanning time, and reducing the energy Consumption.
  • FIG. 1 is a flowchart of a large-area fingerprint identification method provided by an embodiment of the present application
  • FIG. 2 is a schematic structural diagram of a mobile terminal provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of a sensor matrix structure provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of the structure of the first row of sensors in the sensor matrix shown in FIG. 3;
  • FIG. 5 is a schematic diagram of dividing the sensor matrix into several blocks according to rows according to an embodiment of the present application
  • FIG. 6 is a schematic structural diagram of a fingerprint identification system provided by an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a sensor matrix provided by an embodiment of the present application during fingerprint recognition
  • FIG. 8 is a schematic structural diagram of a sensor matrix provided by another embodiment of the present application during fingerprint recognition
  • FIG. 9 is a schematic structural diagram of a sensor matrix provided by still another embodiment of the present application during fingerprint recognition.
  • FIG. 10 is a schematic structural diagram of a sensor matrix provided by another embodiment of the present application during fingerprint recognition.
  • Some embodiments of the present application provide a fingerprint identification method.
  • the fingerprint identification method divides the sensor matrix into a plurality of blocks by rows, and each block is controlled by an independent switch port, so that each zone Blocks can be scanned independently for fingerprint identification; when working, only the blocks occupied by fingerprints are scanned by fingerprints, and the blocks not occupied by fingerprints are not scanned. This reduces the area of fingerprint recognition area, shortens fingerprint recognition time and reduces Energy consumption.
  • Figure 1 is a flowchart of a fingerprint identification method provided by an embodiment of the application.
  • the fingerprint identification method is applied to a mobile terminal 20, and the mobile terminal 20 includes a fingerprint identification system 21. It includes a sensor matrix 210, the sensor matrix 210 is an N*M matrix, each row of the sensor matrix 210 includes M sensors C, and each column includes N sensors C, where N and M are integers greater than one.
  • the mobile terminal 20 further includes a touch screen 22, the touch screen 22 is arranged above the fingerprint identification system 21, and further, the touch screen 22 is arranged above the sensor matrix 210.
  • the sensor matrix 210 provided by the embodiment of the present application is composed of a matrix composed of N rows of sensors C and M columns of sensors C.
  • FIG. 3 shows the overall structure of the sensor matrix 210
  • FIG. 4 is for the first shown in FIG. An illustration of a row sensor; each sensor C in the sensor matrix 210 is connected to an external circuit through two interfaces, one of the interfaces is connected to the scanning line G, and then to the external scanning system, and the other interface is connected to The data line S is connected, and then connected to an external data processing unit.
  • the sensor C is not directly shown in FIG. 3, the arrangement of the sensor C in each row is as shown in FIG. 4.
  • FIG. 4 in order to illustrate the overall structure of the sensor matrix 210, Take a simple illustration.
  • Step S1 Divide the sensor matrix 210 into n blocks according to rows, and each block includes multiple rows of sensors in the sensor matrix 210, where n is an integer greater than 1.
  • the sensor matrix 210 is an N*M matrix, that is, the sensor matrix 210 includes M sensors in each row and N sensors in each column;
  • the sensor matrix 210 can be equally divided into k rows, where k is an integer greater than 1, that is, each block contains k rows.
  • the sensor matrix 210 is equally divided by k rows and divided into n blocks in an embodiment of the present application, the sensor matrix 210 can still be divided non-equally or Partial average division, such as dividing the sensor matrix 210 into n blocks according to rows, and the number of rows of the sensors contained in each block is different or partly the same.
  • the sensor matrix 210 is divided into different blocks according to rows, and there is no limitation on the number of rows of the sensors included in each block.
  • the fingerprint identification system 21 further includes a multiplexer 211.
  • the multiplexer 211 includes n mutually independent switch terminals.
  • the n switch terminals of the user 211 respectively control the n blocks of the sensor matrix 210, that is, each of the n blocks of the sensor matrix 210 can be individually turned on or off Yes, when performing fingerprint recognition scanning, only part of the blocks are turned on for fingerprint scanning, and the remaining blocks remain closed, thereby reducing the number of sensors that need to be scanned during a fingerprint recognition scan process and shortening the scanning time , Reduce energy consumption.
  • Step S2 Detect the block occupied by the fingerprint.
  • the mobile terminal 20 further includes a touch screen 22, the touch screen 22 is arranged above the fingerprint identification system 21, and the fingerprint identification system 21 includes a sensor matrix 210. Further, the touch screen 22 is arranged above the sensor matrix 210, the touch screen 22 includes a positioning system, and the positioning system can detect the coordinate position of the fingerprint on the touch screen 22, the step S2 Specifically include the following steps:
  • the coordinate position of the fingerprint on the touch screen 22 is detected by the positioning system; for example, a plane coordinate system is established on the surface of the touch screen 22, and the horizontal axis (or X axis) of the coordinate system is along the touch screen 22
  • the horizontal frame is set
  • the vertical axis (or Y axis) of the coordinate system is set along the vertical frame of the touch screen 22; when the fingerprint position is detected, the positioning system can detect that the fingerprint is on the coordinate system , And then locate the coordinate position of the fingerprint on the touch screen 22;
  • the positioning system projects the coordinate position to the sensor matrix 210 to determine the sensor corresponding to the fingerprint position;
  • the block occupied by the fingerprint is determined by the sensor occupied by the fingerprint.
  • the “occupies the sensor” or “occupies the block” in this application refers to the sensor or the sensor that is covered or partially covered when the fingerprint is projected onto the sensor matrix 210 Block.
  • Step S3 Scan the block occupied by the fingerprint to identify the fingerprint.
  • the fingerprint identification system 21 further includes a scanning system 212, which is connected to the sensor matrix 210 through the multiplexer 211, and the scanning The system 212 provides scanning signals to the sensor matrix 210 through the scanning lines G on the sensor matrix 210, as shown in FIG. 4; the scanning signals emitted by the scanning system 212 first pass through the multiple The switch terminals of the multiplexer 211 are then allocated to corresponding blocks in the sensor matrix 210.
  • the step S3 specifically includes the following steps:
  • the multiplexer 211 turns on the sensor in the block occupied by the fingerprint; specifically, the multiplexer 211 turns on and controls the fingerprint according to the block occupied by the fingerprint
  • the switch terminal of the occupied block allows the scanning system 212 to communicate with the block occupied by the fingerprint through the switch terminal.
  • the switch terminal of 211 performs fingerprint identification scanning on the block occupied by the fingerprint. It should be understood that the switch terminal of the multiplexer 211 has two states of "on” and “off", and the scanning system 212 only scans the switch terminal whose state is "on”.
  • the corresponding block eliminates the need to scan the entire sensor matrix 210, reduces the scanning range, improves scanning efficiency, and realizes rapid identification and unlocking in a large-area fingerprint identification system.
  • the sensor matrix 710 includes a number of the blocks, and the blocks occupied by the fingerprint P on the sensor matrix 710 are blocks A i+1 to All the blocks between the block Ai+b, where i and b are both positive integers, and the fingerprint P completely covers all the blocks between the block Ai+1 to the block Ai+b.
  • the fingerprint recognition area 711 performs normal fingerprint scanning. Specifically, as shown in FIG. 6, the multiplexer 211 turns on the switch terminal corresponding to the fingerprint recognition area 711, and the scanning system 212 starts from above. Scan the fingerprint identification area 711 sequentially from the bottom, and the area outside the fingerprint identification area 711 is not scanned, thereby reducing the scanning range, shortening the fingerprint identification time, and realizing fast fingerprint unlocking.
  • the time taken for the normal fingerprint scan to complete the scan of a row of the sensors is 50 microseconds.
  • the sensor matrix 810 includes a plurality of the blocks, and the blocks occupied by the fingerprint P on the sensor matrix 810 are blocks A i to All blocks between block Ai+b, where i and b are both positive integers, and the range between block Ai and block Ai+b (including block Ai and all blocks)
  • the block A i+b) is called the fingerprint identification area 811
  • the fingerprint P partially covers the block A i and the block A i+b
  • the block A i and the block A i The area not covered by the fingerprint P in +b
  • the second area 8112 the area in the fingerprint recognition area 811 excluding the second area 8112 is called the first area 8111.
  • the scan speed of the fast fingerprint scan is greater than the scan speed of the normal fingerprint scan, thereby shortening the time to complete the fingerprint identification area 811 while ensuring Improve the accuracy of fingerprint recognition.
  • the multiplexer 211 turns on the switch terminal corresponding to the fingerprint identification area 811, and the scanning system 212 sequentially scans the fingerprint identification area 811 from top to bottom.
  • the scanning system 212 provides a fast scan signal to the second area 8112 for fast fingerprint scanning, and provides a normal scan signal to the first area 8111 to perform a normal fingerprint scan.
  • the normal fingerprint scan is different from the normal fingerprint scan.
  • the switching between the fast fingerprint scanning is controlled by an external processor, and the external processor controls the scanning system according to the first area 8111 and the second area 8112 determined by the fingerprint identification system 21 212 provides a fast scan signal to the second area 8112 and a normal scan signal to the first area 8111.
  • the time taken for the fast fingerprint scan to complete the scanning of a row of the sensors is 5 microseconds
  • the time taken for the normal fingerprint scan to complete the scanning of the sensors for a row of the sensors is 50 microseconds.
  • the sensor matrix 910 includes a plurality of the blocks, and the block occupied by the fingerprint P on the sensor matrix 910 is block A i+1 And block A i+2, that is, the fingerprint P occupies two blocks, and the block A i+1 and the block A i+2 are completely covered by the fingerprint P.
  • the block A i+1 and the block A i+2 are called the fingerprint recognition area 911, and the fingerprint recognition area 911 is subjected to normal fingerprint scanning.
  • the multiplexing The user 211 turns on the switch terminal corresponding to the fingerprint recognition area 911, the scanning system 212 scans the fingerprint recognition area 911 sequentially from top to bottom, and does not scan the area outside the fingerprint recognition area 911 , Thereby reducing the scanning range, shortening the fingerprint identification time, and realizing fast fingerprint unlocking.
  • the time taken for the normal fingerprint scan to complete the scan of a row of the sensors is 50 microseconds.
  • the sensor matrix 1010 includes a plurality of the blocks, and the blocks occupied by the fingerprint P on the sensor matrix 1010 are block Ai, zone Block A i+1 and block A i+2, the block A i, block A i+1, and block A i+2 are called the fingerprint identification area 1011, and the fingerprint P partially covers the block A i and the block A i+2, the area in the block A i and the block A i+2 that is not covered by the fingerprint P is called the second area 10112, and the block Ai, The area covered by the fingerprint P of the block Ai+1 and the block Ai+2 is called the first area 10111.
  • Normal fingerprint scanning is performed on the first area 10111, and the second area 10112 performs a fast fingerprint scan, and the scan speed of the fast fingerprint scan is greater than that of the normal fingerprint scan, thereby shortening the time for completing the scan in the fingerprint identification area 1011, and at the same time ensuring the accuracy of fingerprint identification.
  • the multiplexer 211 turns on the switch terminal corresponding to the fingerprint identification area 1011, and the scanning system 212 sequentially scans the fingerprint identification area 1011 from top to bottom.
  • the scanning system 212 provides a fast scan signal to the second area 10112 for fast fingerprint scanning, and provides a normal scan signal to the first area 10111 for normal fingerprint scanning.
  • the normal fingerprint The switching between the fast fingerprint scanning is controlled by an external processor, and the external processor controls the scanning system according to the first area 10111 and the second area 10112 determined by the fingerprint identification system 21 212 provides a fast scan signal to the second area 10112 and a normal scan signal to the first area 10111.
  • the time taken for the fast fingerprint scan to complete the scanning of a row of the sensors is 5 microseconds
  • the time taken for the normal fingerprint scan to complete the scanning of the sensors for a row of the sensors is 50 microseconds.
  • the embodiment of the present application also provides a mobile terminal 20.
  • the mobile terminal 20 includes a fingerprint identification system 21, and the fingerprint identification system 21 includes a sensor matrix 210 and a multiplexer 211. And scanning system 212.
  • the sensor matrix 210 is an N*M type matrix. Each row of the sensor matrix 210 includes M sensors C, and each column includes N sensors C, where N and M are integers greater than 1;
  • FIG. 4 is a diagram for the first row of sensors shown in FIG. 3; each sensor C in the sensor matrix 210 is connected to an external circuit through two interfaces, one The interface is connected with the scanning line G, and then connected to the external scanning system, and the other interface is connected with the data line S, and then connected to the external data processing unit. It should be understood that although the sensor C is not directly shown in FIG. 3, the arrangement of the sensor C in each row is as shown in FIG. 4.
  • the arrangement of the sensor C in each row is as shown in FIG. 4.
  • the multiplexer 211 includes n mutually independent switch terminals, and the n switch terminals of the multiplexer 211 divide the sensor matrix 210 into n blocks by rows, each The blocks are respectively controlled by one switch terminal, that is, each of the n blocks of the sensor matrix 210 can be individually turned on or off.
  • some of the blocks can be The block is turned on for fingerprint scanning, and the rest of the blocks remain closed, thereby reducing the area of the fingerprint scanning area and reducing the fingerprint recognition time, where n is an integer greater than 1.
  • Fig. 5 shows a block division method provided by an embodiment of the present application.
  • Each block includes 10 rows of the sensors, that is, the sensors in rows 1 to 10 in the sensor matrix 210 are Block A1, the sensors in rows 11 to 20 in the sensor matrix are block A2, and so on, the sensors in rows N-9 to N in the sensor matrix 210 are blocks An .
  • the sensor matrix 210 can be equally divided into k rows, where k is an integer greater than 1, that is, each block contains k rows. The sensors in the sensor matrix 210.
  • the sensor matrix 210 is equally divided by k rows and divided into n blocks in an embodiment of the present application, the sensor matrix 210 can still be divided non-equally or Partial average division, such as dividing the sensor matrix 210 into n blocks according to rows, and the number of rows of the sensors contained in each block is different or partly the same.
  • the sensor matrix 210 is divided into different blocks according to rows, and there is no limitation on the number of rows of the sensors included in each block.
  • the scanning system 212 is connected to the sensor matrix 210 through the multiplexer 211, and the scanning system 212 provides scanning signals to the sensor matrix 210 through the scanning lines G on the sensor matrix 210;
  • the scanning signal emitted by the scanning system 212 first passes through the switch terminal of the multiplexer 211, and then is distributed to the corresponding block, so as to scan the block;
  • the switch terminal of the multiplexer 211 has two states of "on” and "off”, and the scanning system 212 only scans the area corresponding to the switch terminal whose state is "on”. Therefore, there is no need to scan the entire sensor matrix 210, which reduces the scanning range, improves scanning efficiency, and realizes rapid identification and unlocking in a large-area fingerprint identification system.
  • the mobile terminal 20 further includes a touch screen 22, which is arranged above the fingerprint identification system 21, and further, the touch screen 22 is arranged above the sensor matrix 210, so
  • the touch screen 22 includes a positioning system for detecting the coordinate position of the fingerprint on the touch screen 22, and the multiplexer 211 controls the corresponding switch terminal to turn on according to the coordinate position, so that Perform fingerprint identification scanning on the block in the sensor matrix 210 corresponding to the coordinate position of the fingerprint.
  • the sensor matrix 210 is divided into a number of blocks according to rows, and each block is controlled by an independent switch terminal.
  • each block is controlled by an independent switch terminal.

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Abstract

一种指纹识别方法及移动终端，所述方法将一移动终端的传感器矩阵按行划分为若干区块，每个所述区块通过一个独立的开关端子进行控制，在进行指纹解锁时，仅在指纹占据的所述区块进行扫描，指纹未占据的区块不进行扫描，从而大大减小了扫描面积，缩短了扫描时间，提高了解锁效率，可以实现快速指纹解锁，并且降低了能耗；利用所述移动终端的多路复用器将传感器矩阵划分为多个区块，每个区块可独立进行指纹识别扫描，在进行指纹解锁时，无需对整个所述传感器矩阵进行扫描，提高解锁效率，并且节约电能。

Description

指纹识别方法及移动终端 技术领域
本申请涉及电子技术领域，尤其涉及一种指纹识别方法及移动终端。
 背景技术
随着智能手机制造技术及手机解锁技术的发展，现如今，指纹识别解锁已经成为手机上的常规配制。目前手机上搭配使用的指纹识别技术通常是电容式指纹识别，以及最近新兴的光学式指纹识别及超声波指纹识别。但无一例外地，这些指纹识别技术均是基于在手机上的特定部分区域进行指纹识别，如手机的home键及手机背部的局部区域等，这种设计的指纹识别区域的面积大小接近人的指纹大小，指纹识别的面积较小，使用时方便性不足。
基于上述问题，全面屏指纹解锁技术已经成为各大手机制造厂商研究和推广的重点，但采用在原有指纹识别技术的基础上，单纯性的扩大指纹识别区域的面积来实现全面屏指纹解锁，会出现解锁速度慢、耗电量大等问题，因为全面屏指纹识别技术需要对整个手机屏幕进行指纹识别扫描，相对局部指纹扫描，耗时较长，耗电较大。
 技术问题
在包含全面屏或大面积指纹识别的技术的移动终端中，现有的指纹识别方法需要对整个指纹识别区域进行扫描，由于扫描区域较大，会出现指纹识别速度慢、耗电量大的问题。
 技术解决方案
为了解决上述技术问题，本申请提供的解决方案如下：
本申请提供了一种指纹识别方法，应用于移动终端，所述移动终端包括指纹识别系统，所述指纹识别系统包括传感器矩阵，所述传感器矩阵为N*M型矩阵，所述传感器矩阵每行包括M个传感器，每列包括N个传感器，其中N和M为大于1的整数，所述指纹识别方法包括以下步骤：
将所述传感器矩阵按行划分为n个区块，每个所述区块包含所述传感器矩阵中的多行传感器，其中n为大于1的整数；
检测指纹占据的所述区块；
扫描所述指纹占据的所述区块以识别所述指纹。
本申请的指纹识别方法中，所述n个区块中，每个所述区块包含所述传感器矩阵的行数相同，即N=k*n，k为大于1的整数。
本申请的指纹识别方法中，所述指纹识别系统还包括多路复用器，所述多路复用器包括n个独立的开关端子，所述将所述传感器矩阵按行划分为n个区块的方法为：
使用所述多路复用器，使所述多路复用器的每个所述开关端子控制所述传感器矩阵中的若干行传感器，每个所述开关端子控制的所述传感器组成的区域为一个所述区块。
本申请的指纹识别方法中，所述移动终端还包括设置于所述指纹识别系统上方的触摸屏。
本申请的指纹识别方法中，所述触摸屏设置于所述传感器矩阵上方。
本申请的指纹识别方法中，所述触摸屏包括定位系统，所述检测指纹占据的所述区块的方法包括以下步骤：
通过所述定位系统检测所述指纹在所述触摸屏上的坐标位置；
根据所述坐标位置确定所述指纹占据的所述传感器；
通过所述指纹占据的所述传感器确定所述指纹占据的所述区块。
本申请的指纹识别方法中，所述指纹识别系统还包括扫描系统，所述扫描系统通过所述多路复用器与所述传感器矩阵连接，用于向所述传感器矩阵提供扫描信号。
本申请的指纹识别方法中，所述扫描所述指纹占据的所述区块以识别所述指纹的方法包括以下步骤：
通过所述多路复用器开启所述指纹占据的所述区块中的传感器；
通过所述扫描系统扫描所述指纹占据的所述区块中的传感器，以识别所述指纹。
本申请的指纹识别方法中，所述指纹占据的所述区块包括第一区域和第二区域，所述第一区域为被所述指纹覆盖的区域，所述第二区域为未被所述指纹覆盖的区域，所述通过所述扫描系统扫描所述指纹占据的所述区块中的传感器的方法为：
对所述第一区域中的传感器进行正常指纹扫描，对所述第二区域中的传感器进行快速指纹扫描。
本申请的指纹识别方法中，所述正常指纹扫描完成对一行所述传感器的扫描所用的时间是50微秒，所述快速指纹扫描完成对一行所述传感器的扫描所用的时间是5微秒。
本申请的指纹识别方法中，所述通过所述扫描系统扫描所述指纹占据的所述区块中的传感器的方法为：
对所述指纹占据的所述区块进行正常指纹扫描。
本申请的指纹识别方法中，所述正常指纹扫描完成对一行所述传感器的扫描所用的时间是50微秒。
本申请还提供了一种移动终端，包括指纹识别系统，所述指纹识别系统包括：
传感器矩阵，用于识别指纹，所述传感器矩阵为N*M型矩阵，所述传感器矩阵每行包括M个传感器，每列包括N个传感器，其中N和M为大于1的整数；
多路复用器，包括n个独立的开关端子，所述n个独立的开关端子将所述传感器矩阵按行分为n个区块，每个所述区块分别通过一个所述开关端子控制，其中n为大于1的整数；以及
扫描系统，通过所述开关端子向所述区块提供扫描信号，以识别指纹；
每个所述开关端子存在“开启”和“关闭”两种状态，所述扫描系统通过所述状态为“开启”的所述开关端子向所述区块提供扫描信号，以识别所述指纹。
本申请的移动终端中，所述移动终端还包括触摸屏，所述触摸屏设置于所述指纹识别系统上方，所述触摸屏包括定位系统，所述定位系统用于检测所述指纹在所述触摸屏上的坐标位置；
本申请的移动终端中，所述触摸屏设置于所述传感器矩阵上方。
本申请的移动终端中，所述多路复用器根据所述指纹在所述触摸屏上的坐标位置控制相应的所述开关端子开启。
本申请的移动终端中，所述n个区块中，每个所述区块包含的所述传感器的行数相同。
本申请的移动终端中，所述n个区块中，部分所述区块包含的所述传感器的行数相同。
 有益效果
本申请提供的指纹识别方法及移动终端，通过将用于指纹识别的传感器矩阵按行划分为多个区块，每个区块包含若干行所述传感器矩阵中的传感器，每个区块通过独立的开关端口进行控制，在进行指纹识别扫描时，仅在指纹所占据的区块进行扫描，指纹未占据的区块不进行扫描，从而大大减小了扫描面积，缩短了扫描时间，降低了能耗。
 附图说明
为了更清楚地说明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单介绍，显而易见地，下面描述中的附图仅仅是申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本申请一实施例提供的大面积指纹识别方法流程图；
图2是本申请一实施例提供的移动终端结构示意图；
图3是本申请一实施例提供的传感器矩阵结构示意图；
图4是图3中所示的传感器矩阵中的第一行传感器结构示意图；
图5是本申请一实施例提供的将传感器矩阵按行划分为若干区块的示意图；
图6是本申请一实施例提供的指纹识别系统结构示意图；
图7是本申请一实施例提供的传感器矩阵在进行指纹识别时的结构示意图；
图8是本申请又一实施例提供的传感器矩阵在进行指纹识别时的结构示意图；
图9是本申请再一实施例提供的传感器矩阵在进行指纹识别时的结构示意图；
图10是本申请另一实施例提供的传感器矩阵在进行指纹识别时的结构示意图。
 本发明的实施方式
以下各实施例的说明是参考附加的图示，用以例示本申请可用以实施的特定实施例。本申请所提到的方向用语，例如[上]、[下]、[前]、[后]、[左]、[右]、[内]、[外]、[侧面]等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本申请，而非用以限制本申请。在图中，结构相似的单元是用以相同标号表示。
本申请的一些实施例提供了一种指纹识别方法，所述指纹识别方法，通过将传感器矩阵按行划分为多个区块，每一个区块通过独立的开关端口进行控制，从而使每一个区块可以独立进行指纹识别扫描；工作时，仅被指纹占据的区块进行指纹扫描，未被指纹占据的区块不进行指纹扫描，从而缩小了指纹识别区域的面积，缩短了指纹识别时间，降低了能耗。
下面结合附图详细介绍本申请实施例提供的指纹识别方法：
如图1-4所示，图1为本申请实施例提供的指纹识别方法流程图，所述指纹识别方法应用于移动终端20，所述移动终端20包括指纹识别系统21，所述指纹识别系统包括传感器矩阵210，所述传感器矩阵210为N*M型矩阵，所述传感器矩阵210每行包括M个传感器C，每列包括N个传感器C，其中N和M为大于1的整数。
根据本申请一实施例，所述移动终端20还包括触摸屏22，所述触摸屏22设置于所述指纹识别系统21的上方，进一步地，所述触摸屏22设置于所述传感器矩阵210的上方。
本申请实施例提供的传感器矩阵210由N行传感器C和M列传感器C组成的矩阵构成，图3示出了所述传感器矩阵210的整体结构，图4是针对图3中所示的第一行传感器的图示；所述传感器矩阵210中的每一个所述传感器C均通过两个接口与外部电路连通，一个所述接口与扫描线G连接，进而连通至外部扫描系统，另一个接口与数据线S连接，进而连通至外部数据处理单元。应当理解的是，虽然图3中未直接示出所述传感器C，但是每一行中的所述传感器C的布置均如图4中所示，此处为了示意所述传感器矩阵210的整体结构而采取简易图示。
本申请实施例提供的指纹识别方法包括以下步骤：
步骤S1、将所述传感器矩阵210按行划分为n个区块，每个所述区块包含所述传感器矩阵210中的多行传感器，其中n为大于1的整数。
根据本申请一实施例，参考图3至图5所示，所述传感器矩阵210为N*M型矩阵，即所述传感器矩阵210每行包括M个传感器，每列包括N个传感器；将所述N行传感器平均分为n个区块，每一个所述区块包括10行所述传感器，即：所述传感器矩阵210中的第1至第10行所述传感器为区块A1，所述传感器矩阵210中的第11至第20行所述传感器为区块A2，以此类推，所述传感器矩阵210中的第N-9至第N行所述传感器为区块An，即，在本实施例中所述传感器矩阵210中的传感器数量满足N=10*n。
应当理解的是，虽然本申请的一个实施例将所述传感器矩阵210中的传感器按每10行进行等分，即每一个所述区块均包含10行所述传感器矩阵210中的传感器，但是并不仅限于这一种划分区块的方法，依据同样的构思，可以将所述传感器矩阵210按每k行进行等分，其中k为大于1的整数，即每一个所述区块包含k行所述传感器矩阵210中的传感器，所述传感器矩阵210中的传感器数量满足N=k*n.
同样应当理解的是，虽然本申请一实施例中将所述传感器矩阵210按每k行进行等分，划分为n个所述区块，但仍可将所述传感器矩阵210进行非平均划分或局部平均划分，如将所述传感器矩阵210按行划分为n个所述区块，每个所述区块中包含的所述传感器的行数均不相同或部分相同，本申请旨在对所述传感器矩阵210按行划分为不同的区块，对每一个所述区块中包含的所述传感器的行数不做限制。
根据本申请一实施例，如图6所示，所述指纹识别系统21还包括多路复用器211，所述多路复用器211包括n个相互独立的开关端子，所述多路复用器211的n个所述开关端子，分别控制所述传感器矩阵210的n个区块，即所述传感器矩阵210的n个所述区块中的每一个所述区块可单独开启或关闭的，在进行指纹识别扫描时，仅部分所述区块开启进行指纹扫描，其余区块保持关闭状态，从而减少在一次指纹识别扫描过程中需要完成扫描的所述传感器的数量，缩短了扫描时间，降低了能耗。
步骤S2、检测指纹占据的所述区块。
根据本申请一实施例，如图2至图6所示，所述移动终端20还包括触摸屏22，所述触摸屏22设置于所述指纹识别系统21的上方，所述指纹识别系统21包括传感器矩阵210，进一步地，所述触摸屏22设置于所述传感器矩阵210的上方，所述触摸屏22包括定位系统，所述定位系统可检测所述指纹在所述触摸屏22上的坐标位置，所述步骤S2具体包括以下步骤：
通过所述定位系统检测所述指纹在所述触摸屏22上的坐标位置；如在所述触摸屏22的表面建立平面坐标系，将所述坐标系的横轴（或X轴）沿所述触摸屏22的横边框设置，将所述坐标系的纵轴（或Y轴）沿所述触摸屏22的竖边框设置；进行指纹位置检测时，所述定位系统可检测出所述指纹在所述坐标系上的坐标点，进而定位出所述指纹在所述触摸屏22上的坐标位置；
根据所述坐标位置确定所述指纹占据的所述传感器；具体地，所述定位系统将所述坐标位置投影至所述传感器矩阵210，以确定出与所述指纹位置相对应的所述传感器；
通过所述指纹占据的所述传感器确定所述指纹占据的所述区块。
需要说明的是，本申请中所述的“占据所述传感器”或“占据所述区块”，指所述指纹投影至所述传感器矩阵210上时覆盖或部分覆盖的所述传感器或所述区块。
步骤S3、扫描指纹占据的所述区块以识别所述指纹。
根据本申请一实施例，如图6所示，所述指纹识别系统21还包括扫描系统212，所述扫描系统212通过所述多路复用器211连接至所述传感器矩阵210，所述扫描系统212通过所述传感器矩阵210上的所述扫描线G，参考图4所示，向所述传感器矩阵210提供扫描信号；由所述扫描系统212发射的所述扫描信号，首先经过所述多路复用器211的开关端子，进而分配至相应的所述传感器矩阵210中的相应区块。所述步骤S3具体包括以下步骤：
通过所述多路复用器211开启所述指纹占据的所述区块中的传感器；具体为，所述多路复用器211根据所述指纹占据的所述区块，开启控制所述指纹占据的所述的区块的开关端子，使所述扫描系统212通过所述开关端子，与所述指纹占据的所述区块连通。
通过所述扫描系统212扫描所述指纹占据的所述区块中的传感器，以识别所述指纹；具体为，所述扫描系统212提供扫描信号，所述扫描信号通过所述多路复用器211的开关端子，对所述指纹占据的所述区块进行指纹识别扫描。应当理解的是，所述多路复用器211的所述开关端子具有“开启”和“关闭”两种状态，所述扫描系统212仅扫描与所述状态为“开启”的所述开关端子相对应的所述区块，从而无需对整个所述传感器矩阵210进行扫描，缩小了扫描范围，提高了扫描效率，在大面积指纹识别系统中实现快速识别解锁。
根据本申请一实施例，如图7所示，所述传感器矩阵710包括若干所述区块，所述指纹P在所述传感器矩阵710上占据的所述区块为区块A i+1至区块A i+b之间的所有区块，其中i和b均为正整数，所述指纹P完整覆盖所述区块A i+1至区块A i+b之间的所有区块。
所述区块A i+1至所述区块A i+b之间的范围（包括所述区块A i+1和所述区块A i+b）称为指纹识别区711，对所述指纹识别区711进行正常指纹扫描，具体为，参考图6所示，所述多路复用器211开启与所述指纹识别区711相对应的所述开关端子，所述扫描系统212从上至下依次扫描所述指纹识别区711，对所述指纹识别区711以外的区域不进行扫描，从而减小了扫描范围，缩短指纹识别时间，实现快速指纹解锁。
具体地，所述正常指纹扫描完成对一行所述传感器的扫描所用的时间是50微秒。
根据本申请又一实施例，如图8所示，所述传感器矩阵810包括若干所述区块，所述指纹P在所述传感器矩阵810上占据的所述区块为区块A i至区块A i+b之间的所有区块，其中i和b均为正整数，所述区块A i至所述区块A i+b之间的范围（包括所述区块A i和所述区块A i+b）称为指纹识别区811，所述指纹P部分覆盖所述区块A i和所述区块A i+b，所述区块A i及所述区块A i+b中未被所述指纹P覆盖的区域称为第二区域8112，所述指纹识别区811中除所述第二区域8112以外的区域称为第一区域8111，对所述第一区域8111进行正常指纹扫描，对所述第二区域8112进行快速指纹扫描，所述快速指纹扫描的扫描速度大于所述正常指纹扫描的扫描速度，从而缩短扫描完成所述指纹识别区811的时间，同时保证了识别指纹的精确度。
具体地，参考图6所示，所述多路复用器211开启与所述指纹识别区811相对应的所述开关端子，所述扫描系统212从上至下依次扫描所述指纹识别区811，所述扫描系统212向所述第二区域8112提供快速扫描信号进行快速指纹扫描，向所述第一区域8111提供正常扫描信号进行正常指纹扫描，需要说明的是，所述正常指纹扫描与所述快速指纹扫描之间的切换是通过一外部处理器控制的，所述外部处理器根据所述指纹识别系统21所确定所述第一区域8111和所述第二区域8112，控制所述扫描系统212向所述第二区域8112提供快速扫描信号，向所述第一区域8111提供正常扫描信号。
具体地，所述快速指纹扫描完成对一行所述传感器的扫描所用的时间是5微秒，所述正常指纹扫描完成对一行所述传感器的扫描所用的时间是50微秒。
本实施例通过对所述指纹识别区811以外的区域不进行指纹识别扫描，对所述第一区域8111进行正常指纹扫描，对所述第二区域8112进行快速指纹扫描，减小了扫描范围，缩短指纹识别时间，实现快速指纹解锁。
根据本申请再一实施例，如图9所示，所述传感器矩阵910包括若干所述区块，所述指纹P在所述传感器矩阵910上占据的所述区块为区块A i+1和区块A i+2，即所述指纹P占据两个所述区块，并且所述区块A i+1和区块A i+2被所述指纹P完全覆盖。
所述区块A i+1与所述区块A i+2称为指纹识别区911，对所述指纹识别区911进行正常指纹扫描，具体为，参考图6所示，所述多路复用器211开启与所述指纹识别区911相对应的所述开关端子，所述扫描系统212从上至下依次扫描所述指纹识别区911，对所述指纹识别区911以外的区域不进行扫描，从而减小了扫描范围，缩短指纹识别时间，实现快速指纹解锁。
具体地，所述正常指纹扫描完成对一行所述传感器的扫描所用的时间是50微秒。
根据本申请另一实施例，如图10所示，所述传感器矩阵1010包括若干所述区块，所述指纹P在所述传感器矩阵1010上占据的所述区块为区块A i、区块A i+1及区块A i+2，所述区块A i、区块A i+1及区块A i+2称为指纹识别区1011，所述指纹P部分覆盖所述区块A i和所述区块A i+2，所述区块A i及所述区块A i+2中未被所述指纹P覆盖的区域称为第二区域10112，所述区块Ai、所述区块A i+1及所述区块A i+2被所述指纹P覆盖的区域称为第一区域10111，对所述第一区域10111进行正常指纹扫描，对所述第二区域10112进行快速指纹扫描，所述快速指纹扫描的扫描速度大于所述正常指纹扫描的扫描速度，从而缩短扫描完成所述指纹识别区1011的时间，同时保证了识别指纹的精确度。
具体地，参考图6所示，所述多路复用器211开启与所述指纹识别区1011相对应的所述开关端子，所述扫描系统212从上至下依次扫描所述指纹识别区1011，所述扫描系统212向所述第二区域10112提供快速扫描信号进行快速指纹扫描，向所述第一区域10111提供正常扫描信号进行正常指纹扫描，需要说明的是，所述正常指纹扫描与所述快速指纹扫描之间的切换是通过一外部处理器控制的，所述外部处理器根据所述指纹识别系统21所确定所述第一区域10111和所述第二区域10112，控制所述扫描系统212向所述第二区域10112提供快速扫描信号，向所述第一区域10111提供正常扫描信号。
具体地，所述快速指纹扫描完成对一行所述传感器的扫描所用的时间是5微秒，所述正常指纹扫描完成对一行所述传感器的扫描所用的时间是50微秒。
本实施例通过对所述指纹识别区1011以外的区域不进行指纹识别扫描，对所述第一区域10111进行正常指纹扫描，对所述第二区域10112进行快速指纹扫描，减小了扫描范围，缩短了指纹识别时间，实现快速指纹解锁。
本申请实施例还提供了一种移动终端20，如图2至图6所示，所述移动终端20包括指纹识别系统21，所述指纹识别系统21包括传感器矩阵210、多路复用器211及扫描系统212。
所述传感器矩阵210为N*M型矩阵，所述传感器矩阵210每行包括M个传感器C，每列包括N个传感器C，其中N和M均为大于1的整数；图3示出了所述传感器矩阵210的整体结构，图4是针对图3中所示的第一行传感器的图示；所述传感器矩阵210中的每一个所述传感器C均通过两个接口与外部电路连通，一个所述接口与扫描线G连接，进而连通至外部扫描系统，另一个接口与数据线S连接，进而连通至外部数据处理单元。应当理解的是，虽然图3中未直接示出所述传感器C，但是每一行中的所述传感器C的布置均如图4中所示，此处为了示意所述传感器矩阵210的整体结构而采取简易图示。
所述多路复用器211包括n个相互独立的开关端子，所述多路复用器211的n个所述开关端子将所述传感器矩阵210按行分为n个区块，每个所述区块分别通过一个所述开关端子控制，即所述传感器矩阵210的n个所述区块中的每一个所述区块可单独开启或关闭，在进行指纹识别扫描时，可以使部分所述区块开启进行指纹扫描，其余区块保持关闭状态，从而缩小指纹扫描区域的面积，减少指纹识别时间，其中n为大于1的整数。
如图5示出了本申请一实施例提供的区块划分方法，每一个所述区块包括10行所述传感器，即：所述传感器矩阵210中的第1至第10行所述传感器为区块A1，所述传感器矩阵中的第11至第20行所述传感器为区块A2，以此类推，所述传感器矩阵210中的第N-9至第N行所述传感器为区块An。
应当理解的是，虽然本申请的一个实施例将所述传感器矩阵210中的传感器按每10行进行等分，即每一个所述区块均包含10行所述传感器矩阵210中的传感器，但是并不仅限于这一种划分区块的方法，依据同样的构思，可以将所述传感器矩阵210按每k行进行等分，其中k为大于1的整数，即每一个所述区块包含k行所述传感器矩阵210中的传感器。
同样应当理解的是，虽然本申请一实施例中将所述传感器矩阵210按每k行进行等分，划分为n个所述区块，但仍可将所述传感器矩阵210进行非平均划分或局部平均划分，如将所述传感器矩阵210按行划分为n个所述区块，每个所述区块中包含的所述传感器的行数均不相同或部分相同，本申请旨在将所述传感器矩阵210按行划分为不同的区块，对每一个所述区块中包含的所述传感器的行数不做限制。
所述扫描系统212通过所述多路复用器211连接至所述传感器矩阵210，所述扫描系统212通过所述传感器矩阵210上的所述扫描线G向所述传感器矩阵210提供扫描信号；由所述扫描系统212发射的所述扫描信号，首先经过所述多路复用器211的开关端子，进而分配至相应的区块，从而对所述区块进行扫描；需要说明的是，所述多路复用器211的所述开关端子具有“开启”和“关闭”两种状态，所述扫描系统212仅扫描与所述状态为“开启”的所述开关端子相对应的所述区块，从而无需对整个所述传感器矩阵210进行扫描，缩小了扫描范围，提高了扫描效率，在大面积指纹识别系统中实现快速识别解锁。
根据本申请一实施例，所述移动终端20还包括触摸屏22，所述触摸屏22设置于所述指纹识别系统21的上方，进一步地，所述触摸屏22设置于所述传感器矩阵210的上方，所述触摸屏22包括定位系统，所述定位系统用于检测所述指纹在所述触摸屏22上的坐标位置，所述多路复用器211根据所述坐标位置控制相应的所述开关端子开启，从而对所述传感器矩阵210中的与所述指纹的坐标位置相对应的所述区块进行指纹识别扫描。
本申请实施例提供的移动终端，将所述传感器矩阵210按行划分为若干个区块，每个所述区块分别通过一个独立开关端子控制，在进行指纹识别扫描时，仅在指纹所占据的区块进行扫描，指纹未占据的区块不进行扫描，从而大大减小了扫描面积，缩短了扫描时间，并且降低了能耗。
需要说明的是，虽然本申请以具体实施例揭露如上，但上述实施例并非用以限制本申请，本领域的普通技术人员，在不脱离本申请的精神和范围内，均可作各种更动与润饰，因此本申请的保护范围以权利要求界定发范围为准。

Claims (18)

  1. 一种指纹识别方法，应用于移动终端，所述移动终端包括指纹识别系统，所述指纹识别系统包括传感器矩阵，所述传感器矩阵为N*M型矩阵，所述传感器矩阵每行包括M个传感器，每列包括N个传感器，其中N和M为大于1的整数，所述指纹识别方法包括以下步骤：
    将所述传感器矩阵按行划分为n个区块，每个所述区块包含所述传感器矩阵中的多行传感器，其中n为大于1的整数；
    检测指纹占据的所述区块；
    扫描所述指纹占据的所述区块以识别所述指纹。
  2. 根据权利要求1所述的指纹识别方法，其中，所述n个区块中，每个所述区块包含所述传感器矩阵的行数相同，即N=k*n，k为大于1的整数。
  3. 根据权利要求1所述的指纹识别方法，其中，所述指纹识别系统还包括多路复用器，所述多路复用器包括n个独立的开关端子，所述将所述传感器矩阵按行划分为n个区块的方法为：
    使用所述多路复用器，使所述多路复用器的每个所述开关端子控制所述传感器矩阵中的若干行传感器，每个所述开关端子控制的所述传感器组成的区域为一个所述区块。
  4. 根据权利要求3所述的指纹识别方法，其中，所述移动终端还包括设置于所述指纹识别系统上方的触摸屏。
  5. 根据权利要求4所述的指纹识别方法，其中，所述触摸屏设置于所述传感器矩阵上方。
  6. 根据权利要求5所述的指纹识别方法，其中，所述触摸屏包括定位系统，所述检测指纹占据的所述区块的方法包括以下步骤：
    通过所述定位系统检测所述指纹在所述触摸屏上的坐标位置；
    根据所述坐标位置确定所述指纹占据的所述传感器；
    通过所述指纹占据的所述传感器确定所述指纹占据的所述区块。
  7. 根据权利要求6所述的指纹识别方法，其中，所述指纹识别系统还包括扫描系统，所述扫描系统通过所述多路复用器与所述传感器矩阵连接，用于向所述传感器矩阵提供扫描信号。
  8. 根据权利要求7所述的指纹识别方法，其中，所述扫描所述指纹占据的所述区块以识别所述指纹的方法包括以下步骤：
    通过所述多路复用器开启所述指纹占据的所述区块中的传感器；
    通过所述扫描系统扫描所述指纹占据的所述区块中的传感器，以识别所述指纹。
  9. 根据权利要求8所述的指纹识别方法，其中，所述指纹占据的所述区块包括第一区域和第二区域，所述第一区域为被所述指纹覆盖的区域，所述第二区域为未被所述指纹覆盖的区域，所述通过所述扫描系统扫描所述指纹占据的所述区块中的传感器的方法为：
    对所述第一区域中的传感器进行正常指纹扫描，对所述第二区域中的传感器进行快速指纹扫描。
  10. 根据权利要求9所述的指纹识别方法，其中，所述正常指纹扫描完成对一行所述传感器的扫描所用的时间是50微秒，所述快速指纹扫描完成对一行所述传感器的扫描所用的时间是5微秒。
  11. 根据权利要求8所述的指纹识别方法，其中，所述通过所述扫描系统扫描所述指纹占据的所述区块中的传感器的方法为：
    对所述指纹占据的所述区块进行正常指纹扫描。
  12. 根据权利要求11所述的指纹识别方法，其中，所述正常指纹扫描完成对一行所述传感器的扫描所用的时间是50微秒。
  13. 一种移动终端，包括指纹识别系统，所述指纹识别系统包括：
    传感器矩阵，用于识别指纹，所述传感器矩阵为N*M型矩阵，所述传感器矩阵每行包括M个传感器，每列包括N个传感器，其中N和M为大于1的整数；
    多路复用器，包括n个独立的开关端子，所述n个独立的开关端子将所述传感器矩阵按行分为n个区块，每个所述区块分别通过一个所述开关端子控制，其中n为大于1的整数；以及
    扫描系统，通过所述开关端子向所述区块提供扫描信号，以识别指纹；
    每个所述开关端子存在“开启”和“关闭”两种状态，所述扫描系统通过所述状态为“开启”的所述开关端子向所述区块提供扫描信号，以识别所述指纹。
  14. 根据权利要求13所述的移动终端，其中，所述移动终端还包括触摸屏，所述触摸屏设置于所述指纹识别系统上方，所述触摸屏包括定位系统，所述定位系统用于检测所述指纹在所述触摸屏上的坐标位置；
  15. 根据权利要求14所述的移动终端，其中，所述触摸屏设置于所述传感器矩阵上方。
  16. 根据权利要求15所述的移动终端，其中，所述多路复用器根据所述指纹在所述触摸屏上的坐标位置控制相应的所述开关端子开启。
  17. 根据权利要求13所述的移动终端，其中，所述n个区块中，每个所述区块包含的所述传感器的行数相同。
  18. 根据权利要求13所述的移动终端，其中，所述n个区块中，部分所述区块包含的所述传感器的行数相同。
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