Patents by Inventor Po-Shien CHU

Po-Shien CHU has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Image quality in a fingerprint detecting apparatus and method
    Patent number: 10664682
    Abstract: A fingerprint detecting apparatus and method process a fingerprint image based on an offset value and a gain value to produce a digital image. The fingerprint detecting apparatus and method are capable of adjusting the offset value without finding out a largest pixel number of multiple grayscale values. Alternatively, the offset value and the gain value corresponding to the offset value are selected to enhance the quality of the digital image.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: May 26, 2020
    Assignee: Image Match Design Inc.
    Inventors: Zhieng-Chung Chen, Po-Shien Chu
  • IMPROVEMENT OF IMAGE QUALITY IN A FINGERPRINT DETECTING APPARATUS AND METHOD
    Publication number: 20190122023
    Abstract: A fingerprint detecting apparatus and method process a fingerprint image based on an offset value and a gain value to produce a digital image. The fingerprint detecting apparatus and method are capable of adjusting the offset value without finding out a largest pixel number of multiple grayscale values. Alternatively, the offset value and the gain value corresponding to the offset value are selected to enhance the quality of the digital image.
    Type: Application
    Filed: October 19, 2018
    Publication date: April 25, 2019
    Inventors: Zhieng-Chung CHEN, Po-Shien CHU