Unlock instant, AI-driven research and patent intelligence for your innovation.

Fingerprint identification method and device and mobile terminal

A fingerprint recognition and fingerprint technology, which is applied in character and pattern recognition, acquisition/organization of fingerprints/palmprints, telephone communication, etc. power consumption and other issues, to achieve the effect of accurate and reliable judgment logic, avoiding full array scanning, and reducing power consumption

Active Publication Date: 2016-08-24
CHIPONE TECH BEIJINGCO LTD
View PDF14 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Since the user can only see the Home button, but not the position and size of the fingerprint identification chip, the existing detection methods and detection area arrangements cannot ensure that the user's finger covers as much of the fingerprint sensing area of ​​the fingerprint identification chip as possible.
In addition, the number of detection areas set is too large, resulting in overlapping coverage areas of the detection areas, which increases the power consumption of the chip

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fingerprint identification method and device and mobile terminal
  • Fingerprint identification method and device and mobile terminal
  • Fingerprint identification method and device and mobile terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0098] This embodiment provides a method for judging whether fingerprint information is valid. A plurality of detection areas are set in the fingerprint sensing area, wherein the plurality of detection areas include at least one central detection area located in the middle of the fingerprint sensing area and a plurality of edge detection areas arranged around the central detection area.

[0099] The method includes:

[0100] Scan all detection areas;

[0101]When the scanning result satisfies the first condition, it is determined that the fingerprint information is valid;

[0102] Otherwise, it is determined that the fingerprint information is invalid.

[0103] The first condition includes: the central detection area is covered, and at least one edge detection area is covered. The center detection area is covered to ensure that the user's finger is pressed to the middle of the fingerprint sensing area, and at least one edge detection area is covered to ensure that the user'...

Embodiment 2

[0112] This embodiment provides a method for judging whether fingerprint information is valid. Similar to Method Embodiment 1, multiple detection areas are set in the fingerprint sensing area, wherein the multiple detection areas include at least one central detection area located in the middle of the fingerprint sensing area and multiple detection areas located around the central detection area. an edge detection area.

[0113] The method includes:

[0114] Scan all detection areas;

[0115] When the scanning result satisfies the first condition and the second condition, it is determined that the fingerprint information is valid;

[0116] Otherwise, it is determined that the fingerprint information is invalid.

[0117] The first condition includes: the central detection area is covered, and at least one edge detection area is covered.

[0118] The second condition includes: at least two scans are performed on the plurality of detection areas, and the scan results of the a...

Embodiment 3

[0129] This embodiment provides a fingerprint identification method, which uses the method described in the method embodiment 1 or 2 to determine whether the fingerprint information is valid.

[0130] As mentioned in the background art, in order to reduce the power consumption of the chip, the working modes of the fingerprint identification chip can be divided into scanning, detection, sleep and hibernation and other working modes. In sleep mode, the fingerprint recognition chip does not operate, reducing chip power consumption; in sleep mode, the fingerprint recognition chip scans 1 to 2 detection areas to determine whether a finger is pressed; in detection mode, the fingerprint recognition chip scans certain detection areas area, to determine whether the fingerprint information is valid; in the scanning mode, the fingerprint identification chip scans the entire scanning area of ​​the fingerprint identification chip, that is, the fingerprint sensing area, to obtain the user's ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a fingerprint identification method and device and a mobile terminal, and is mainly to solve the problems of large power consumption and inaccuracy of fingerprint information effectiveness judgment in the prior art. The method for judging whether the fingerprint information is effective is characterized by, when the scanning result of detection regions meets a condition that a center detection region is covered and at least one edge detection region is covered, judging the fingerprint information is effective. The center detection region is covered to ensure a finger of a user presses the center of a fingerprint sensing region, and the at least one edge detection region is covered to ensure the finger of the user presses at least one side of the fingerprint sensing region, thereby ensuring at least half of the finger of the user presses the fingerprint sensing region, and judgment logic is allowed to be more accurate and reliable, preventing carrying out whole array scanning on the non-effective user fingerprint information, and effectively reducing power consumption of a fingerprint identification chip.

Description

technical field [0001] The invention relates to the field of fingerprint detection, in particular to a fingerprint recognition method, device and mobile terminal. Background technique [0002] At present, the fingerprint recognition methods in the market are divided into scratch type and push type. The scratch type fingerprint recognition methods are as follows: figure 1 As shown, the fingerprint information of the user is collected by swipe the finger across the fingerprint identification chip, and the pressing fingerprint identification method is as follows: figure 2 As shown in the figure, the fingerprint information of the user is collected by pressing the surface of the chip with a finger. [0003] When using the push-type fingerprint recognition method, the user presses the fingerprint recognition chip from the front, and the finger covers the entire or most of the chip surface, and the fingerprint information can be obtained through optical recognition, capacitive f...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G06K9/00H04M1/02
CPCH04M1/026G06V40/1306
Inventor 张鹏飞
Owner CHIPONE TECH BEIJINGCO LTD