| CPC H04N 25/771 (2023.01) [H04N 25/532 (2023.01); H04N 25/78 (2023.01)] | 16 Claims |
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1. An image sensor comprising:
a pixel array including a plurality of pixels; and
a row driver connected to the pixel array,
wherein each of the plurality of pixels comprises,
a photodiode;
a transmit transistor connected between the photodiode and a floating diffusion;
a first source follower connected between the floating diffusion and a first node, the first source follower configured to,
amplify a voltage of the floating diffusion, and
output the amplified voltage to the first node;
a first pre-charge select transistor connected to the first node and a second node, the first pre-charge select transistor configured to reset the first node based on a signal from the row driver;
a first capacitor and a second capacitor,
a first sampling transistor connected between the second node and the first capacitor, the first sampling transistor configured to cause the first capacitor to sample the voltage of the floating diffusion; and
a second sampling transistor connected between the second node and the second capacitor, the second sampling transistor configured to cause the second capacitor to sample the voltage of the floating diffusion; and
wherein the row driver is further configured to control each of the plurality of pixels such that the first capacitor and the second capacitor share charge corresponding to the amplified voltage during a first period.
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