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:
Dec. 11, 2018
Filed:
Sep. 28, 2016
Semiconductor Components Industries, Llc, Phoenix, AZ (US);
Hai Yan, San Ramon, CA (US);
SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC, Phoenix, AZ (US);
Abstract
An imaging sensor may include an array of imaging pixels and at least two rows of dark pixels. Each imaging pixel may include a photodiode that generates charge in response to incident light. Each dark pixel may include a photodiode that is shielded from incident light by shielding material. The at least two rows of dark pixels may be sampled simultaneously and averaged to obtain an average dark pixel charge level. The average dark pixel charge level may be subtracted from each imaging pixel charge level to correct the imaging pixel charge levels for noise. Each column of dark pixels may include a column line that is coupled to first and second readout circuits. Each column line may be coupled to first and second current sources. Each column line may be coupled to at least one capacitor.