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Fingerprint sensing module and fingerprint sensing method

A sensing method and fingerprint technology, applied in character and pattern recognition, instruments, computer parts, etc., can solve the problems affecting the false rejection rate of the recognition system and the misjudgment of the back-end processor.

Pending Publication Date: 2021-03-16
EGIS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly, when the processed non-fingerprint image of the sensing image looks like a fingerprint, it will lead to misjudgment by the back-end processor, which will affect the False Rejection Rate (FRR) or FRR of the recognition system. False Acceptance Rate (FalseAcceptance Rate; FAR)

Method used

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  • Fingerprint sensing module and fingerprint sensing method
  • Fingerprint sensing module and fingerprint sensing method
  • Fingerprint sensing module and fingerprint sensing method

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Embodiment Construction

[0034] Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used in the drawings and description to refer to the same or like parts.

[0035] figure 1 is a schematic diagram of a fingerprint sensing module according to an embodiment of the present invention. refer to figure 1 , the fingerprint sensing module 100 includes a processing module 110 , a fingerprint sensor 120 , a light source 130 and a storage module 140 . The processing module 110 is coupled to the fingerprint sensor 120 , the light source 130 and the storage module 140 . In this embodiment, the processing module 110 may be a processing chip dedicated to driving the fingerprint sensor, or an integrated chip, such as a Fingerprint touch display driver integrated chip (FTDDI). In this embodiment, the fingerprint sensing module 100 can be an optical fingerpri...

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Abstract

The invention provides a fingerprint sensing module and a fingerprint sensing method. The fingerprint sensing module comprises a light source, a fingerprint sensor and a processing module. The fingerprint sensor senses a finger illuminated by the light source and a finger not illuminated by the light source to obtain a first image and a second image. The processing module is coupled to the fingerprint sensor. The processing module determines a fingerprint image area according to the first image and the second image to generate a fingerprint image.

Description

technical field [0001] The invention relates to a sensing device, in particular to a fingerprint sensing module and a fingerprint sensing method. Background technique [0002] For the current optical fingerprint sensing technology, since the fingerprint sensor may capture the fingerprint image (finger pressing area image) and non-fingerprint image (non-finger pressing area image) at the same time during the process of obtaining the fingerprint image, therefore Back-end processors often need to distinguish by designing special and complex image recognition algorithms. Commonly, when the processed non-fingerprint image of the sensing image looks like a fingerprint, it will lead to misjudgment by the back-end processor, which will affect the False Rejection Rate (FRR) or FRR of the recognition system. False Acceptance Rate (FalseAcceptance Rate; FAR). In view of this, solutions of several embodiments will be proposed below. Contents of the invention [0003] The invention ...

Claims

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Application Information

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IPC IPC(8): G06K9/00
CPCG06V40/1324
Inventor 王冠渊林冠仪杨宸王晓淯
Owner EGIS TECH