FINGERPRINT IDENTIFICATION DEVICE AND METHOD

摘要

The present disclosure discloses a fingerprint identification apparatus and method. The fingerprint identification apparatus comprises a fingerprint acquisition module, an analog-to-digital conversion module and a control module that are sequentially connected, wherein the analog-to-digital conversion module comprises a quantified voltage generator for generating a quantified voltage, the fingerprint acquisition module is configured to acquire fingerprint information, and the analog-to-digital conversion module is configured to perform an analog-to-digital conversion for the fingerprint information and output quantified fingerprint information data; wherein the control module is configured to control the quantified voltage generator to adjust an output range of the quantified voltage according to a distribution range of the fingerprint information data to enlarge a distribution range of the quantified fingerprint information data. As such, dynamic adjustment of the contrast of a fingerprint image is achieved with a simple circuit and a low cost.

主权项

1. A fingerprint identification apparatus, comprising a fingerprint acquisition module, an analog-to-digital conversion module and a control module that are sequentially connected, wherein the analog-to-digital conversion module comprises a quantized voltage generator for generating a quantized voltage, the fingerprint acquisition module is configured to acquire fingerprint information, and the analog-to-digital conversion module is configured to perform an analog-to-digital conversion for the fingerprint information and output quantized fingerprint information data; wherein
the control module is configured to control the quantized voltage generator to adjust an output range of the quantized voltage according to a distribution range of the quantized fingerprint information data to enlarge a distribution range of the quantized fingerprint information data.