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.

Date of Patent:
Jan. 04, 2022

Filed:

Mar. 25, 2020
Applicant:

Facebook Technologies, Llc, Menlo Park, CA (US);

Inventors:

Xinqiao Liu, Medina, WA (US);

Song Chen, Redmond, WA (US);

Tsung-Hsun Tsai, Redmond, WA (US);

Assignee:

Facebook Technologies, LLC, Menlo Park, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 5/378 (2011.01); H01L 27/146 (2006.01); H04N 5/3745 (2011.01); H04N 5/235 (2006.01); G02B 27/01 (2006.01);
U.S. Cl.
CPC ...
H04N 5/378 (2013.01); H01L 27/14643 (2013.01); H04N 5/2353 (2013.01); H04N 5/3745 (2013.01); G02B 27/0172 (2013.01); G02B 2027/0178 (2013.01);
Abstract

An apparatus comprises a first photodiode, a second photodiode, a charge sensing unit, a quantizer, a memory, and a controller configured to: set a first exposure period in which the first photodiode generates a first charge; set a second exposure period in which the second photodiode generates a second charge, the second exposure period being set based on the first exposure period and at least one of: a first time associated with a read out operation of the memory to a second apparatus, or a second time associated with a quantization operation by the quantizer; perform, using the quantizer, the first quantization operation of the first charge to generate a first digital output; store the first digital output in the memory; perform, using the quantizer, a second quantization operation of the second charge to generate a second digital output; and store the second digital output in the memory.


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