The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 30, 2024
Filed:
Dec. 28, 2022
Applicant:
Himax Technologies Limited, Tainan, TW;
Inventors:
Assignee:
Himax Technologies Limited, Tainan, TW;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06F 3/042 (2006.01); H03M 1/50 (2006.01); H03M 1/60 (2006.01);
U.S. Cl.
CPC ...
G06F 3/042 (2013.01); H03M 1/50 (2013.01); H03M 1/60 (2013.01);
Abstract
A detection circuit adaptable to a fingerprint detection system includes an integrating amplifier coupled to receive a photo-detected voltage from a sensor panel and configured to generate time integral of the photo-detected voltage, thereby resulting in a time-integral signal; and an analog-to-digital converter (ADC) that converts the time-integral signal into a digital form. A first common-mode voltage of the sensor panel is coupled to the integrating amplifier to prevent noise occurred in the first common-mode voltage from affecting the time-integral signal.