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Fingerprint identification method adapted for multiple fingerprint sensors and module thereof

A technology of fingerprint identification module and fingerprint sensor, which is applied in the direction of character and pattern recognition, instruments, computer components, etc., to achieve the effect of convenient use, convenient connection and small size

Inactive Publication Date: 2005-03-16
CHANGCHUN HONGDA OPTOELECTRONICS & BIOSTATISTICS IDENTIFICATION TECH
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Problems solved by technology

[0005] The technical solution of the present invention is as follows: the two kinds of software connection interfaces that want to stay, connect optical sensor or pressure-sensitive sensor and the sensor interface of fingerprint identification module, connect simply with fingerprint identification module UART interface J3 through user board UART interface, The sensor setting command issued by the user board arbitrarily selects different sensors to be used together with the fingerprint identification module. The operation is simple and convenient, and the use is stable and reliable. It overcomes the problem that the fingerprint module can only choose a single fingerprint optical sensor and gives the user a choice

Method used

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  • Fingerprint identification method adapted for multiple fingerprint sensors and module thereof
  • Fingerprint identification method adapted for multiple fingerprint sensors and module thereof
  • Fingerprint identification method adapted for multiple fingerprint sensors and module thereof

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Embodiment Construction

[0012] according to figure 1 As shown, the user is connected to the computer through the four-core connector J4 of the computer UART interface, and supplies +5V DC power to the fingerprint identification module through the power input interface J5, and the power supply will provide 3.3V and 1.8V voltages to the fingerprint through the PS767D325 of the power management unit. Identify each unit on the module. When the watchdog reset unit X5045 is powered on, it will control the normal reset of the central processing unit AR2001 through the reset port line RESET, and start to work. First, the central processing unit AR2001 will make the operation processing program storage unit FLASH 28F320 is in the data output state, so that the operation processing unit SDRAM GLT5640 works in the data input state, and through the address control of the address bus A0-A21, the operation processing program is transferred from the operation processing program storage unit FLASH 28F320 through the...

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Abstract

The invention relates to the fingerprint identification method and its module suitable for many fingerprint sensors. Connect the optical sensor or the pressure sensor to the sensor interface of the fingerprint identification module with two software interfaces reserved. Through the simple connection between the user board interface and the fingerprint identification module interface, different sensors can be chosen arbitrarily according to the sensor setting command transmitted from the user board to assist the fingerprint identification module. By this means, the problem of only a single fingerprint optical sensor can be chosen by the fingerprint module is resolved. The invention can be also connected the computer to implement the demonstration of the functions of the fingerprint identification module through the management software. The whole module possesses the advantages of small volume, easy connection, large fingerprint memory, high comparison speed and so on. It can be applied to the small-sized fingerprint verification machine, and it is a good choice to secondarily develop the fingerprint products.

Description

Technical field: [0001] The invention discloses a fingerprint identification method applicable to various fingerprint sensors and provides a corresponding identification module, which relates to the technical field of fingerprint identification. Background technique: [0002] Most of the current fingerprint identification field is a fingerprint product or fingerprint module that can only be connected to a traditional optical sensor. Because the optical sensor collects the image through the contact of the finger with the surface of the prism and undergoes optical refraction processing, when the finger is very dry or very When it is wet, the collected fingerprint images will not be able to be clearly identified and identified. In this way, the requirements for the fingerprints of users who use fingerprint products are very strict, so there are unsuitable groups of people, and the users of fingerprint products are restricted, which is not conducive to the development and promot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
Inventor 王莉王欣王佳伟
Owner CHANGCHUN HONGDA OPTOELECTRONICS & BIOSTATISTICS IDENTIFICATION TECH
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