Image sensor and imaging system

The utility model discloses an image sensor and an imaging system. The image sensor pixel may include a photodiode, a floating diffusion, and a transfer gate. Column readout circuits are coupled to the image sensor pixels via column lines. The image sensor pixel may have a pixel output path capacitively coupled to the column line via a capacitor. An input terminal of a capacitor at an image sensorpixel may be coupled to the pre-charge transistor. The pre-charge transistor may connect an input terminal of the capacitor to a ground voltage. During a readout operation, the pre-charge transistormay be activated prior to activating the row selection transistor to read out the reset or image level signal. By capacitively coupling an image sensor pixel to a column line, pixel signal readout operations such as signal readout speed may be improved while pixel power may be reduced. 本实用新型公开了一种图像传感器和成像系统。图像传感器像素可以包括光电二极管、浮动扩散部和转移门。列读出电路经由列线耦接到图像传感器像素。图像传感器像素可以具有经由电容器电容耦接到列线的像素输出路径。图像传感器像素处的电容器的输入端子可以耦接到预充电晶体管。预充电晶体管可以将电容