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Fingerprint identification method, device and mobile terminal

A fingerprint recognition and fingerprint technology, which is applied in character and pattern recognition, acquisition/organization of fingerprints/palmprints, instruments, etc., can solve the problem of overlapped detection area coverage, inability to see the position and size of the fingerprint recognition chip, and increase chip power consumption and other problems, to achieve the effect of accurate and reliable judgment logic, avoiding full array scanning, and reducing power consumption

Active Publication Date: 2021-09-07
CHIPONE TECH BEIJINGCO LTD
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  • 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

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  • Fingerprint identification method, device and mobile terminal
  • Fingerprint identification method, device and mobile terminal
  • Fingerprint identification method, 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 ...

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Abstract

Disclosed are a fingerprint identification method, device and mobile terminal, which mainly solve the problems in the prior art that the validity judgment of fingerprint information is not accurate enough and the power consumption is large. The method for judging whether the fingerprint information is valid is to determine that the fingerprint information is valid when the scanning result of the detection area satisfies the condition that the central detection area is covered and at least one edge detection area is covered, and the central detection area is covered to ensure that the user's finger touches the fingerprint. The middle of the sensing area, while at least one edge detection area is covered, to ensure that the user's finger is pressed on at least one side of the fingerprint sensing area, thereby ensuring that at least half of the user's finger is pressed on the fingerprint sensing area, and the judgment logic is more accurate Reliable, avoid full-array scanning of invalid user fingerprint information, and effectively reduce the power consumption of fingerprint identification chips.

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

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00H04M1/02
CPCH04M1/026G06V40/1306
Inventor 张鹏飞
Owner CHIPONE TECH BEIJINGCO LTD