Patent ID: 11902685
Assignee: META PLATFORMS TECHNOLOGIES, LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. The apparatus of claim 1,
wherein the digital outputs are stored as light measurement values in the frame memory;
wherein each pixel cell of the array of pixel cells is configured to:
reset the charge sensing unit to cause the charge sensing unit to output a reset voltage;
use the quantizer to output a dark pixel value based on quantizing the reset voltage; and
store the dark pixel value in the in-pixel memory; and

wherein the apparatus further comprises a digital correlated double sampling (CDS) circuit configured to:
for each pixel cell, fetch the dark pixel value and the light measurement value from the frame memory;
compute a difference between the dark pixel value and light measurement value; and
transmit the difference as a noise-corrected pixel value to the host device via the bus interface.