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Fingerprint detection method, fingerprint sensor, fingerprint detection device and mobile terminal

A fingerprint sensor and fingerprint detection technology, applied in the fields of fingerprint sensors, fingerprint detection devices, fingerprint detection methods, and mobile terminals, can solve time-consuming problems, reduce the number of signals, ensure diversified features, and reduce time-consuming effects

Inactive Publication Date: 2019-06-11
CHIPONE TECH BEIJINGCO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, on the one hand, the signal processing circuit needs to acquire as many sensing signals (corresponding to the first capacitor) as possible to generate a fingerprint image with higher quality; It takes more time for transmission and analog-to-digital conversion, which consumes a lot of time

Method used

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  • Fingerprint detection method, fingerprint sensor, fingerprint detection device and mobile terminal
  • Fingerprint detection method, fingerprint sensor, fingerprint detection device and mobile terminal
  • Fingerprint detection method, fingerprint sensor, fingerprint detection device and mobile terminal

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Embodiment Construction

[0040] Hereinafter, the present application will be described in more detail with reference to the accompanying drawings. In the various drawings, the same elements are designated with similar reference numerals. For the sake of clarity, the various parts in the drawings are not drawn to scale. In addition, some well-known parts may not be shown. The embodiment of the present invention provides a fingerprint detection method. The flowchart of the fingerprint detection method is as follows: image 3 Shown. The fingerprint detection method includes the following steps.

[0041] In step S01, the fingerprint sensing area is divided into multiple sub-areas. Fingerprint sensing area includes all fingerprint sensing areas.

[0042] In step S02, sensing signals are obtained from at least two sub-regions, and fingerprint images are obtained accordingly. Wherein, in the at least two sub-regions, at least two sub-regions that are not completely continuous are included, or, in the at leas...

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Abstract

The invention provides a fingerprint detection method, a fingerprint sensor, a fingerprint detection device and a mobile terminal. The fingerprint detection method comprises the following steps: dividing a fingerprint sensing area into a plurality of sub-areas; wherein the sensing signals are respectively acquired from at least two sub-regions to obtain a fingerprint image, and at least two incomplete continuous sub-regions are included in the at least two sub-regions, or at least two complete discontinuous sub-regions are included in the at least two sub-regions. In this way, the generated fingerprint image reflects the fingerprint characteristics of at least two separation positions on the fingerprint, and therefore it is ensured that the generated fingerprint image contains the diversified characteristics of the fingerprint.

Description

Technical field [0001] This application relates to the technical field of fingerprint sensors, and more specifically, to a fingerprint detection method, fingerprint sensor, fingerprint detection device and mobile terminal. Background technique [0002] Fingerprint sensors are sensor devices used to image fingerprints, and have been widely used in access control systems, time and attendance systems, and mobile terminals such as mobile phones and tablet computers to verify the identity of users. Fingerprint sensors include optical sensors and capacitive sensors. The optical fingerprint sensor includes an optical scanning element to obtain an optical image of the fingerprint. The capacitive fingerprint sensor acquires the capacitance characteristics of each local position of the effective area of ​​the finger, thereby using the capacitance change to form a fingerprint image. The signal acquisition and processing circuit of the optical fingerprint sensor is separated from the finge...

Claims

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Application Information

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IPC IPC(8): G06K9/00
Inventor 王长海
Owner CHIPONE TECH BEIJINGCO LTD
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