Fingerprint recognition method and fingerprint recognition device

A fingerprint identification and fingerprint image technology, which is applied in character and pattern recognition, acquisition/organization of fingerprints/palmprints, print image collection, etc., can solve the problems of slow fingerprint recognition speed, and achieve the effect of improving the fingerprint recognition speed

Inactive Publication Date: 2018-08-28
BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to ensure that the screen has completed the switch from the off-screen state to the on-screen state, the waiting time is set to be large enough, which leads to a slow fingerprint recognition speed

Method used

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  • Fingerprint recognition method and fingerprint recognition device
  • Fingerprint recognition method and fingerprint recognition device
  • Fingerprint recognition method and fingerprint recognition device

Examples

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Embodiment Construction

[0051] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

[0052] figure 2 It is a flow chart of a fingerprint identification method shown according to an exemplary embodiment. This method can be applied to terminal devices such as mobile phones, tablet computers, or smart watches, and is not limited here. The fingerprint recognition in this method may be an off-screen fingerprint recognition. Such as figure 2 As shown, the method includ...

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Abstract

The disclosure relates to a fingerprint recognition method and a fingerprint recognition device. The method comprises the following steps: when a screen is in the state of being switched off and the pressure value of pressing the screen is greater than a threshold value, the screen is controlled to be switched from the state of being switched off to a state of being switched on; whether the screenshines or not is monitored; when the screen shines, whether a fingerprint image is acquired by a fingerprint sensor or not is judged; if a fingerprint image is acquired, then the fingerprint image isadopted as a recognized image; if no fingerprint image is acquired, then the fingerprint sensor is triggered to acquire a fingerprint image, and the acquired fingerprint image is adopted as a recognized image; the recognized image is matched with a fingerprint template, and a matching result is returned to an application calling a fingerprint function. The disclosure can acquire a fingerprint image in time, and thereby the speed of fingerprint recognition can be increased.

Description

technical field [0001] The present disclosure relates to the technical field of fingerprints, in particular to a fingerprint identification method and device. Background technique [0002] Total reflection refers to the phenomenon that light is reflected back into the original medium when it is incident on the interface of an optically denser medium to an optically rarer medium. Among them, comparing the two media, the medium in which the speed of light is relatively small is called an optically dense medium, and the medium in which the speed of light is relatively high is called an optically sparse medium. Two conditions must be met for total reflection to occur, one is that the incident angle is greater than the critical angle, and the other is that light enters an optically sparse medium from an optically denser medium. [0003] Diffuse reflection refers to the phenomenon that light projected on a rough surface is reflected in all directions. When a parallel incident li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06F3/041G06F3/0488
CPCG06F3/0416G06F3/04883G06V40/1318
Inventor 黄学斌
Owner BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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