Optical fingerprint pick-up device with finger touch monitoring function and its method

A finger-contact, optical technology, applied in character and pattern recognition, instruments, computer components, etc., can solve problems such as misoperation and power consumption

Inactive Publication Date: 2007-10-03
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Compared with the capacitive fingerprint capture device, the above-mentioned optical fingerprint capture device uses periodic light source to detect and consumes more power, and needs to design a method and circuit for judging the change range of the detected image data
Moreover, when the above-mentioned optical fingerprint capture device detects whether the finger to be teste

Method used

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  • Optical fingerprint pick-up device with finger touch monitoring function and its method
  • Optical fingerprint pick-up device with finger touch monitoring function and its method
  • Optical fingerprint pick-up device with finger touch monitoring function and its method

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Embodiment Construction

[0044] The preferred examples of the present invention will now be described in detail as follows in conjunction with reference numerals.

[0045] Please refer to FIG. 1 for a schematic diagram of the optical fingerprint capture device of the present invention. The optical fingerprint capture device of the present invention includes a finger contact detection sensor 1 , an optical fingerprint sensor module 2 , a light source 3 and a substrate 4 . The finger contact detection sensing element 1 is arranged around the optical fingerprint sensing module 2 for sensing whether the finger to be detected touches the optical fingerprint sensing module 2 . When the finger 11 to be tested touches the optical fingerprint sensing module 2 and touches the finger contact detection sensing element 1 at the same time, the finger contact detection sensing element 1 starts the optical fingerprint sensing module 2 to execute the fingerprint information of the finger 11 to be tested. Fetch job. T...

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Abstract

The present invention relates to an optical fingerprint pick-up device with finger contact detection function and its method. Said optical fingerprint pick-up device includes a base plate, a light source, an optical fingerprint sensing module and a finger contact detection sensing element. Besides, said invention also provides the concrete steps of said optical fingerprint pick-up method.

Description

technical field [0001] The present invention relates to an optical fingerprint capture device, in particular to an optical fingerprint capture device with the function of starting fingerprint capture upon finger touch. Background technique [0002] With the change of modern life style and the rapid growth of data volume in the digital age, people's demand for data security is increasing day by day, which makes the development of biometric technology gain greater incentives. Fingerprint identification technology is a widely used biometric identification technology at present. Its principle is to capture fingerprint information through a fingerprint capture device, and then use identification software to compare the characteristic information of fingerprints to determine the identity of the fingerprint owner. [0003] The known fingerprint capture devices include optical and capacitive fingerprint capture devices, wherein the capacitive fingerprint capture device directly touc...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06K9/20
Inventor 郑家驹黄国贤周明庆
Owner LITE ON SEMICON
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