Patent ID: 11924570
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. An image sensor comprising:
a pixel array in which a plurality of pixels are arranged; and
a row driver circuit configured to control the pixel array,
wherein each of the plurality of pixels comprises:
a photodiode;
a floating diffusion node configured to integrate photocharge generated by the photodiode;
a first sampling transistor configured to sample charge at the floating diffusion node, in response to the floating diffusion node being reset;
a first capacitor connected to the first sampling transistor and configured to store photocharge sampled by the first sampling transistor;
a second sampling transistor configured to sample an integrated charge of the floating diffusion node, in response to the floating diffusion node integrating the photocharge generated by the photodiode; and
a second capacitor connected to the second sampling transistor and configured to store photocharge sampled by the second sampling transistor, wherein the row driver circuit is configured to,
during a first period, turn on and control the first sampling transistor to output charge stored in the first capacitor as a first pixel signal,
during a second period, turn on and control the second sampling transistor to output charge stored in the second capacitor as a second pixel signal, and
during a third period, turn on and control the first sampling transistor and the second sampling transistor to output charge stored in the first capacitor and the second capacitor as the second pixel signal.