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Fingerprint identification device and fingerprint identification method

  • US 10,216,978 B2
  • Filed: 03/31/2018
  • Issued: 02/26/2019
  • Est. Priority Date: 08/26/2014
  • Status: Expired due to Fees
First Claim
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1. A fingerprint identification device, comprising:

  • a light source, configured to emit a light beam to an object;

    a processor, coupled to the light source; and

    a light receiver, coupled to the processor, and configured to capture an object image of the object in a time interval,wherein the processor analyzes the object image, and extracts one of a plurality of object pictures of the object image to obtain a fingerprint image, and the processor performs a fingerprint identification operation on the fingerprint image to obtain a fingerprint identification result, wherein the processor further analyzes the object image to obtain pixel change data of the object image in the time interval, and the processor determines whether the fingerprint image is verified according to the fingerprint identification result and the pixel change data,wherein the processor analyzes a partial block of each of the object pictures respectively to obtain pixel data corresponding to the object pictures in the time interval, wherein the processor collects statistics of the pixel data to obtain the pixel change data,wherein the pixel data of each of the object pictures is a sum of a total red pixel value, the total green pixel value, and the total blue pixel value of all the pixels of the partial block of the block picture.

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