Patent ID: 11956413
Assignee: META PLATFORMS TECHNOLOGIES, LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. The apparatus of claim 1, further comprising:
a first charge sensing unit comprising a first capacitor and a first buffer, the first buffer being coupled with the quantizer;
a second charge sensing unit comprising a second capacitor and a second buffer, the second buffer being coupled with the quantizer;
a first transfer switch coupled between the first photodiode and the first capacitor; and
a second transfer switch coupled between the second photodiode and the second capacitor;
wherein the controller is configured to:
control the first transfer switch to transfer first overflow charge of the first charge from the first photodiode to the first capacitor to generate a first voltage;
control the second transfer switch to transfer second overflow charge of the second charge from the second photodiode, after the second photodiode saturates, to the second capacitor to generate a second voltage;
control the quantizer to measure, based on the first voltage, a time of saturation of the first capacitor by the first overflow charge as the first digital output;
control the quantizer to measure, based on the first voltage, a quantity of the first overflow charge transferred by the first photodiode as the second digital output; and
control the quantizer to measure, based on the second voltage, a quantity of the second overflow charge transferred by the second photodiode as the third digital output.