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Dermatoglyph recognition device and recognition method thereof

An identification device and a technology of dermatoglyphs, applied in the field of dermatoglyphs identification devices and its identification, can solve problems such as fingerprint capacitance attenuation and fingerprint identification difficulties, and achieve the effect of accurate fingerprint identification

Active Publication Date: 2018-03-16
HIMAX TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When detecting the unevenness of the fingerprint, the capacitance generated by it is very small, so when there is a parasitic capacitance, or the human body and the fingerprint detection chip do not share the same ground, the capacitance value of the fingerprint to be detected will be severely attenuated, and Difficulty in fingerprint recognition

Method used

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  • Dermatoglyph recognition device and recognition method thereof
  • Dermatoglyph recognition device and recognition method thereof
  • Dermatoglyph recognition device and recognition method thereof

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Embodiment Construction

[0030] figure 1 It is a schematic diagram of a skin pattern recognition device according to an embodiment of the present invention, please refer to figure 1 . The skin pattern identification device includes a plurality of sensors 102, a switching circuit 104, a signal source 106, and a processing circuit 110, wherein the switching circuit 104 is coupled to each sensor 102 and the processing circuit 110, and the signal source 106 is coupled to the switching circuit 104 and the processing circuit through an impedance element 108. In the circuit 110 , the impedance element 108 can be, for example, a resistance element or an equivalent resistance of a circuit wire, but it is not limited thereto.

[0031] The sensor 102 is used to detect the sensing object 112, such as the fingerprint of a finger, but it is not limited thereto, and it can also detect skin lines in other parts, for example, the sensor 102 can include a sensing electrode, and the sensing electrode of the sensor 102 ...

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PUM

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Abstract

The invention provides a dermatoglyph recognition device and recognition method thereof. The dermatoglyph recognition device includes a switch circuit, a signal source and multiple sensors. The signalsource is selectively connected to the sensors through impedance elements. The switch circuit enables at least one sensor to connect to the impedance element through switching and connects the rest sensors to a grounding terminal of the signal source. The dermatoglyph recognition device recognizes dermatoglyph according to sensing signals generated by a sensor connected to the impedance element in response to a reference signal of the signal source.

Description

technical field [0001] The present invention relates to a recognition device, and in particular to a skin texture recognition device and a recognition method thereof. Background technique [0002] In current electronic products, more and more devices have the function of fingerprint recognition, such as mobile phones and tablet computers. The application of fingerprint identification is more and more extensive, for example, it can be used to identify the user's identity. When detecting the unevenness of the fingerprint, the capacitance generated by it is very small, so when there is a parasitic capacitance, or the human body and the fingerprint detection chip do not share the same ground, the capacitance value of the fingerprint to be detected will be severely attenuated, and Difficulty in fingerprint recognition. Generally speaking, in order to solve this problem, a copper ring with the same ground potential as the internal fingerprint detection chip can be configured on ...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06K9/20
CPCG06V40/1306G06V10/147
Inventor 何嘉铭张耀光
Owner HIMAX TECH LTD