Variable resolution fingerprint acquisition unit array and acquisition method thereof

A technology of fingerprint collection and cell array, which is applied in the direction of instruments, character and pattern recognition, computer components, etc., can solve the problem of large amount of fingerprint sensor data, achieve low resolution, and improve the quality of the image

Active Publication Date: 2017-04-26
JIANGSU BRMICO ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] However, in practical applications, the data volume of the 2000ppi fingerprint sensor is too large, which is more than 4 times that of the conventional 500ppi, and the resolution of 2000ppi is not required in many application fields

Method used

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  • Variable resolution fingerprint acquisition unit array and acquisition method thereof
  • Variable resolution fingerprint acquisition unit array and acquisition method thereof
  • Variable resolution fingerprint acquisition unit array and acquisition method thereof

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Embodiment

[0028] To achieve the resolution can be configured as figure 2 As shown, that is, the signal of each signal plate must be collected and output. exist figure 2 Among them, 200 is a fingerprint collection pixel with a resolution of 500ppi, and 200 is composed of 201, 202, 203, and 204, wherein 201, 202, 203, and 204 respectively represent a three-dimensional view of a fingerprint collection unit with a resolution of 200ppi. In actual design, it is generally required that 201, 202, 203, and 204 are all the same in size, that is, the W (width) represented by 205 corresponding to 201, 202, 203, and 204, and the L (length) represented by 206 must be equal. The distance between 11 represented by 203 and 13 represented by 204 (ie D1 represented by 207 ) is equal to the distance between 13 represented by 203 and 14 represented by 204 (ie D2 represented by 208 ). The H indicated by 215 is the thickness of the metal plate of the fingerprint sensor, which is related to the specific se...

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Abstract

The present invention discloses a variable resolution fingerprint acquisition unit array. The variable resolution fingerprint acquisition unit array comprises a metal polar plate of a fingerprint acquisition array; the metal polar plate of the fingerprint acquisition array is provided with a 4*4 500ppi fingerprint acquisition array; the 500ppi fingerprint acquisition array comprises four 500ppi (pixel per inch)-resolution acquisition pixels; and each 500ppi (pixel per inch)-resolution acquisition pixel includes four unit pixels. According to the variable resolution fingerprint acquisition unit array and the acquisition method thereof of the invention, through segmentation and gating processing on the polar plate, a variable resolution fingerprint acquisition mode can be realized. The variable resolution fingerprint acquisition unit array and acquisition method thereof of the invention can be realized through one acquisition principle or chip; the variable resolution fingerprint acquisition unit array and acquisition method thereof can satisfy high-resolution requirements in conditions vivo detection is required; low resolution can be adopted in conditions where high resolution is not required; and therefore, imaging quality can be enhanced.

Description

technical field [0001] The invention belongs to the technical field of semiconductor fingerprint collection and relates to a fingerprint collection unit, in particular to a collection unit array with variable resolution and a collection method thereof. Background technique [0002] With the advancement of science and technology, people are becoming more and more aware of the security of their own information. With the introduction of a finger with fingerprint recognition on Iphone5S, people have seen the convenience brought by fingerprint recognition technology. In terms of technical maturity, fingerprint is the most mature identification technology at present. Fingerprint identification technology has been recognized as a biometric identification technology that is cheap, miniaturizable, and mass-produced. Biometric technology is different from traditional password and key identification technology. It has the advantages of uniqueness, not easy to copy, high recognition rat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06V40/13
Inventor 张飞飞肖建辉
Owner JIANGSU BRMICO ELECTRONICS
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