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Fingerprint-based pressure detection method and apparatus

A detection method and fingerprint technology, which are applied in the acquisition/organization of fingerprints/palmprints, instruments, characters and pattern recognition, etc., can solve the inaccurate feature values ​​of pressure detection benchmarks, the mean value of fingerprint numbers, the instability of variance, stability and accuracy. problems such as poor performance, to achieve the effect of saving hardware costs, improving stability, and improving applicability

Inactive Publication Date: 2017-03-22
SHENZHEN GOODIX TECH CO LTD
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Problems solved by technology

[0003] The existing fingerprint-based pressure detection technology is poor in stability and accuracy. The reason is that when the finger initially touches the fingerprint sensor, the effective pressing area is small, and the characteristics such as the average value and variance of the fingerprint number are unstable, which leads to the benchmark of pressure detection. Inaccurate eigenvalues ​​and poor pressure detection performance

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  • Fingerprint-based pressure detection method and apparatus
  • Fingerprint-based pressure detection method and apparatus
  • Fingerprint-based pressure detection method and apparatus

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Embodiment Construction

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0029] figure 1 A schematic diagram of a pressure detection device of a terminal device according to an embodiment of the present invention is shown. Such as figure 1 As shown in a, the pressure detection device may be located on the front of the terminal device. Specifically, in an embodiment, the pressure detection device may be disposed on the front of the terminal device and spaced from the display area of ​​the terminal device. For example, the The ...

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Abstract

The embodiment of the present invention provides a fingerprint-based pressure detection method and apparatus, the method is applied to a fingerprint identification device, comprises: acquiring an i-th frame fingerprint signal during a fingerprinting process and determining a fingerprint peak-to-peak value Vi based on the i-th frame fingerprint signal, wherein fingerprint peak-to-peak value Vi of the i-th frame fingerprint signal is represented by the difference between the crest and the trough of the i-th frame fingerprint signal; and determining the the pressure parameter corresponding to the i-th frame fingerprint signal based on the fingerprint peak-to-peak value Vi, which is used to characterize the pressure magnitude, where i is a positive integer. Therefore, the fingerprint-based pressure detecting method provided by the embodiment of the present invention can improve the stability and accuracy of fingerprint-based pressure detection.

Description

technical field [0001] The present invention relates to the technical field of pressure detection, and more specifically, to a fingerprint-based pressure detection method and device. Background technique [0002] As the fingerprint recognition function has gradually become the standard configuration of smart terminal equipment, it has become a new research direction to realize the pressure detection function on the fingerprint recognition device. Using the fingerprint signal for pressure detection does not need to add other sensing components, and the implementation process is simple and reduces hardware cost. [0003] The existing fingerprint-based pressure detection technology has poor stability and accuracy. The reason is that when the finger initially touches the fingerprint sensor, the effective pressing area is small, and the characteristics such as the average value and variance of the fingerprint number are unstable, which leads to the benchmark of pressure detection...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06V40/1306
Inventor 刘卫芳
Owner SHENZHEN GOODIX TECH CO LTD
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