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Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
July 12, 2022
Patent Application Number
16713790
Date Filed
December 13, 2019
Patent Citations
Patent Primary Examiner
A pixel circuit, a method for performing a pixel-level background light subtraction, and an imaging device are disclosed. In one example of the present disclosure, the pixel circuit includes an overflow gate transistor, a photodiode, and two taps. Each tap of the two taps is configured to store a background signal that is integrated by the photodiode, subtract the background signal from a floating diffusion, store a combined signal that is integrated by the photodiode at the floating diffusion, and generate a demodulated signal based on a subtraction of the background signal from the floating diffusion and a storage of the combined signal that is integrated at the floating diffusion.
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