Image sensor circuit and control method thereof

An image sensor circuit, comprising:

• a pixel array, having a plurality pixels arranged in rows and columns, the pixels comprising:
• a first pixel, comprising:
• a first photoelectric conversion unit, configured to convert a light signal into a first electrical signal;
• a first processing unit, coupled to the first photoelectric conversion unit, the first processing unit being configured to receive the first electrical signal and generate a first pixel output;
• and
• a second processing unit, configured to receive a reference signal and generate a. first reference output, wherein the first reference output carries noise interference information;
• and
• a second pixel, wherein the second pixel and the first pixel are disposed in adjacent rows or adjacent columns;
• the second pixel comprises a second photoelectric conversion unit, configured to convert the light signal into a second electrical signal;
• the second pixel and the first pixel share at least a portion of the first processing unit and at least a portion of the second processing unit such that the second pixel is configured to generate a second pixel output and a second reference output;
• and
• a processing circuit, coupled to the pixels, the processing circuit being configured to generate a first sensor output according to the first pixel output and the first reference output, and generate a second sensor output according to the second pixel output and the second reference output.

A control method of an image sensor circuit, comprising:

• before a floating diffusion node receives an electrical signal, resetting the floating diffusion node, and concurrently resetting a reference node;
• amplifying a pixel signal at the floating diffusion node to generate a pixel output;
• amplifying a reference signal at the reference node to generate a reference output;
• and
• generating, by a processing circuit, a sensor output according to the pixel output and the reference output.