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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.:

US 12273644 B1

PDFFull Text
Date of Patent:
Apr. 08, 2025

Filed:

Apr. 19, 2023

Image sensor and image sensing method judging whether a digital sensing signal is abnormal

Applicant:

Guangzhou Tyrafos Semiconductor Technologies Co., Ltd, Guangzhou, CN;

Inventors:

Ping-Hung Yin, Taipei, TW;

Jia-Shyang Wang, Miaoli County, TW;

Dean Wang, Taichung, TW;

Assignee:

Guangzhou Tyrafos Semiconductor Technologies Co., LTD, Guangzhou, CN;

Attorney:

JCIPRNET

Primary Examiner:

Gary C Vieaux

Int. Cl.
CPC ...
H04N 5/335 (2011.01); G06F 1/08 (2006.01); H01L 25/075 (2006.01); H01L 25/18 (2023.01); H03K 19/0185 (2006.01); H03L 7/099 (2006.01); H04N 25/60 (2023.01); H04N 25/627 (2023.01); H04N 25/63 (2023.01); H04N 25/709 (2023.01); H04N 25/76 (2023.01); H04N 25/77 (2023.01); H04N 25/772 (2023.01); H04N 25/778 (2023.01); H04N 25/78 (2023.01); H10F 39/00 (2025.01);
U.S. Cl.
CPC ...
H04N 25/78 (2023.01); G06F 1/08 (2013.01); H01L 25/0753 (2013.01); H01L 25/18 (2013.01); H03K 19/018521 (2013.01); H03L 7/099 (2013.01); H04N 25/60 (2023.01); H04N 25/627 (2023.01); H04N 25/63 (2023.01); H04N 25/709 (2023.01); H04N 25/77 (2023.01); H04N 25/772 (2023.01); H04N 25/778 (2023.01); H04N 25/7795 (2023.01); H10F 39/026 (2025.01); H10F 39/8037 (2025.01); H10F 39/811 (2025.01);
Abstract

An image sensor and an image sensing method are provided. A readout circuit outputs a first digital sensing signal according to a floating diffusion node voltage of a first pixel circuit reset after a reset stage and a floating diffusion node voltage of a second pixel circuit reset after the reset stage during a reset signal readout period. The readout circuit outputs a second digital sensing signal according to a sensing result of the first pixel circuit and the floating diffusion node voltage of the second pixel circuit reset after the same reset stage during a sensing signal readout period. The image processing circuit judges whether a digital number of at least one of the first digital sensing signal and the second digital sensing signal is abnormal to decide to keep an original digital number, directly set a pixel value, or reset the second digital sensing signal.

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