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:
Apr. 21, 2020
Filed:
Jun. 03, 2017
Applicant:
Himax Imaging Limited, Tainan, TW;
Inventors:
Assignee:
HIMAX IMAGING LIMITED, , TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N 5/374 (2011.01); H04N 5/359 (2011.01);
U.S. Cl.
CPC ...
H04N 5/374 (2013.01); H04N 5/3598 (2013.01);
Abstract
An anti-eclipse circuit for use in an imager includes a differential amplifier and a feedback circuit. The differential amplifier is coupled to an output line for receiving an output signal associated with the voltage level of a floating diffusion region in a pixel of the imager and configured to detect when a reset signal received from the pixel drops below a predetermined level. The feedback circuit is configured to increase the reset signal when the output signal is lower than the clamp voltage, thereby keeping the reset signal at the constant level.