Patent ID: 11906353
Assignee: META PLATFORMS TECHNOLOGIES, LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 16:
17. A method comprising:
transferring overflow charge from a photodiode to a charge storage unit to develop a first voltage;
comparing the first voltage against a first ramping threshold voltage to generate a first decision;
generating, based on the first decision, a first digital value;
transferring residual charge from the photodiode to the charge storage unit to develop a second voltage;
comparing the second voltage against a static threshold voltage to determine whether the photodiode saturates to generate a second decision, wherein the static threshold voltage is based on a quantity of the residual charge equal to a saturation capacity of the photodiode;
comparing the second voltage against a second ramping threshold voltage to generate a third decision;
generating, based on the third decision, a second digital value; and
outputting, based on the second decision, one of the first digital value or the second digital value to represent an intensity of light received by the photodiode.