公开(公告)号：US20250024170A1

公开(公告)日：2025-01-16

申请号：US18353085

申请日：2023-07-16

Applicant: APPLE INC.

Inventor： Roger A Panicacci ,  Ashirwad Bahukhandi ,  Andrew Kenneth John McMahon

IPC: H04N25/59 ,  H04N25/77 ,  H04N25/78

Abstract: An imaging device includes a pixel-circuit and a readout circuit. The pixel-circuit includes a photodetector. The readout circuit is configured to perform a series of iterations, each iteration including (i) accumulating an electrical charge in the photodetector during an integration time, (ii) transferring a portion of the electrical charge accumulated in the photodetector to a floating diffusion, the portion being less than all the electrical charge accumulated in the photodetector, and (iii) coupling a voltage of the floating diffusion to a storage capacitance, to subsequently, in a final iteration, transfer a remaining electrical charge from the photodetector, and to derive an output digital value, indicative of a total energy of the light incident on the photodetector over the series of iterations and the final iteration, from the voltage on the storage capacitance and from the remaining electrical charge transferred in the final iteration.