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

Claim 0:
1. An image sensor comprising:
a pixel array in which a plurality of pixels are arranged; and
processing circuitry,
wherein each of the plurality of pixels includes,
a photodiode;
a floating diffusion node configured to integrate photocharge generated by the photodiode;
a first source follower configured to amplify and output a voltage of the floating diffusion node to a first node;
a first pre-charge select transistor, one terminal of which is connected to the first node and another terminal of which is connected to a second node;
a first capacitor configured to store charge corresponding to a voltage of floating diffusion node which is reset;
a first sampling transistor, one terminal of which is connected to the second node, and another terminal of which is connected to the first capacitor, the first sampling transistor being configured to sample charge to the first capacitor;
a second capacitor configured to store charge corresponding to the voltage of the floating diffusion node at which the photocharge has been integrated; and
a second sampling transistor, one terminal of which is connected to the second node, and another terminal of which is connected to the second capacitor, the second sampling transistor being configured to sample charge to the second capacitor,

wherein the processing circuitry is configured to,
turn on the first sampling transistor during a first period such that the first sampling transistor outputs charge stored in the first capacitor as a pixel signal,
turn on the second sampling transistor during a second period such that the second sampling transistor outputs charge stored in the second capacitor as the pixel signal, and
turn on the first sampling transistor and turn on the second sampling transistor during a third period such that the first sampling transistor and the second sampling transistors output charges stored in the first capacitor and the second capacitor as the pixel signal.