Patents by Inventor Po-Chiang Hsieh

Po-Chiang Hsieh 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).

  • Patent number: 11636706
    Abstract: An under-screen fingerprint sensing device and a fingerprint sensing method are provided. The under-screen fingerprint sensing device includes a fingerprint sensor and a processor. When the fingerprint sensor senses a target object, a first color pixel, a second color pixel, and a third color pixel of the fingerprint sensor respectively output a first color original value, a second color original value, and a third color original value. The processor performs FFC on the first color original value, the second color original value, and the third color original value respectively to generate a first color correction value, a second color correction value, and a third color correction value. The processor determines whether the target object is a real finger according to the first color correction value, the second color correction value, and the third color correction value.
    Type: Grant
    Filed: March 1, 2022
    Date of Patent: April 25, 2023
    Assignee: Egis Technology Inc.
    Inventors: Kuan-Yi Lin, Chen Yang, Po-Chiang Hsieh, Pei-Shan Liu
  • Patent number: 11580776
    Abstract: An under-screen fingerprint sensing device and fingerprint sensing method are provided. The under-screen fingerprint sensing device includes a fingerprint sensor and a processor. The processor performs a first FFC on a first color original value, a second color original value, and a third color original value provided by the fingerprint sensor to determine whether a target object is a real finger. When the processor determines that the target object is an unreal finger, the processor performs a second FFC on the first color original value, the second color original value, and the third color original value to determine again whether the target object is the real finger.
    Type: Grant
    Filed: March 1, 2022
    Date of Patent: February 14, 2023
    Assignee: Egis Technology Inc.
    Inventors: Kuan-Yi Lin, Chen Yang, Po-Chiang Hsieh, Pei-Shan Liu
  • Publication number: 20220292873
    Abstract: An under-screen fingerprint sensing device and fingerprint sensing method are provided. The under-screen fingerprint sensing device includes a fingerprint sensor and a processor. The processor performs a first FFC on a first color original value, a second color original value, and a third color original value provided by the fingerprint sensor to determine whether a target object is a real finger. When the processor determines that the target object is an unreal finger, the processor performs a second FFC on the first color original value, the second color original value, and the third color original value to determine again whether the target object is the real finger.
    Type: Application
    Filed: March 1, 2022
    Publication date: September 15, 2022
    Applicant: Egis Technology Inc.
    Inventors: Kuan-Yi Lin, Chen Yang, Po-Chiang Hsieh, Pei-Shan Liu
  • Publication number: 20220292869
    Abstract: An under-screen fingerprint sensing device and a fingerprint sensing method are provided. The under-screen fingerprint sensing device includes a fingerprint sensor and a processor. The processor performs FFC on the multiple first color original values, multiple second color original values, and multiple third color original values provided by the fingerprint sensor, respectively, to generate multiple first color correction values, multiple second color correction values and multiple third color correction values. The processor inputs the first color correction values, the second color correction values, and the third color correction values to a determining module to determine whether the target object is a real finger.
    Type: Application
    Filed: March 1, 2022
    Publication date: September 15, 2022
    Applicant: Egis Technology Inc.
    Inventors: Kuan-Yi Lin, Chen Yang, Po-Chiang Hsieh, Pei-Shan Liu
  • Publication number: 20220284727
    Abstract: An under-screen fingerprint sensing device and a fingerprint sensing method are provided. The under-screen fingerprint sensing device includes a fingerprint sensor and a processor. The processor performs a first FFC on the first color original value, the second color original value, and the third color original value to determine whether the current sensing environment is a strong light environment. When the processor determines that the current sensing environment is a strong light environment, the processor performs a second FFC on the first color original value, the second color original value, and the third color original value to determine whether the target object is a real finger.
    Type: Application
    Filed: March 1, 2022
    Publication date: September 8, 2022
    Applicant: Egis Technology Inc.
    Inventors: Kuan-Yi Lin, Chen Yang, Po-Chiang Hsieh, Pei-Shan Liu
  • Publication number: 20220284730
    Abstract: An under-screen fingerprint sensing device and a fingerprint sensing method are provided. The under-screen fingerprint sensing device includes a fingerprint sensor and a processor. When the fingerprint sensor senses a target object, a first color pixel, a second color pixel, and a third color pixel of the fingerprint sensor respectively output a first color original value, a second color original value, and a third color original value. The processor performs FFC on the first color original value, the second color original value, and the third color original value respectively to generate a first color correction value, a second color correction value, and a third color correction value. The processor determines whether the target object is a real finger according to the first color correction value, the second color correction value, and the third color correction value.
    Type: Application
    Filed: March 1, 2022
    Publication date: September 8, 2022
    Applicant: Egis Technology Inc.
    Inventors: Kuan-Yi Lin, Chen Yang, Po-Chiang Hsieh, Pei-Shan Liu