Patent ID: 11943561
Assignee: META PLATFORMS TECHNOLOGIES, LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. The apparatus of claim 10, further comprising a transfer transistor coupled between the photodiode and the charge sensing unit;
wherein the controller is configured to:
within the exposure period:
control a gate voltage of the transfer transistor during the exposure period to enable the photodiode to accumulate the residual charge, and to enable the charge sensing unit to accumulate the overflow charge to generate a first voltage, and
generate, using the quantizer, the first value based on measuring the time it takes for the first voltage to exceed the threshold;

after the measurement period ends, generate, using the quantizer, a third value based on measuring the first voltage, the third value representing a quantity of the overflow charge;
after the exposure period ends, control the gate voltage of the transfer transistor to transfer the residual charge to the charge sensing unit to generate a second voltage; and
generate, using the quantizer, the second value based on one of the third value or a fourth value based on whether the photodiode is saturated by the residual charge during the exposure period.