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. 09, 2025
Filed:
Mar. 26, 2024
Apple Inc., Cupertino, CA (US);
Vladimir Koifman, Rishon Lezion, IL;
Apple Inc., Cupertino, CA (US);
Abstract
An image sensor includes a pixel-circuit and circuitry. The pixel-circuit includes a PD that accumulates charge responsively to incident light and a FD that stores the charge. The circuitry serially (i) connects the PD and a supply rail to the FD and sends a first FD voltage, (ii) disconnects the supply rail from the FD and sends a second FD voltage, (iii) disconnects the PD from the FD and sends a third FD voltage, (iv) waits a preset exposure time, (v) connects the supply rail to the FD and sends a fourth FD voltage, (vi) disconnects the supply rail from the FD and sends a fifth FD voltage, and (vii) connects the PD to the FD and sends a sixth FD voltage. The circuitry estimates incident light energy responsively to (i) the FD voltages, and (ii) a capacitance ratio defined over at least capacitances of the FD and the PD.