Patent ID: 11871136
Assignee: SMARTSENS TECHNOLOGY (HK) CO., LIMITED
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An image sensor, comprising:
a pixel array including a plurality of pixels arranged in rows and columns; and
a plurality of readout conversion circuits, each of which corresponds to at least one column of pixels in the pixel array;
wherein a readout conversion circuit comprises:
a comparison circuit connected to an output terminal of corresponding column pixels, wherein the comparison circuit is for comparing an output signal of the column pixels with a ramp signal to output a pulse signal to obtain a first output signal and a second output signal;
a selection module connected to the comparison circuit, wherein the selection module is for selecting the first output signal of the comparison circuit during a first sampling count, and selecting the second output signal of the comparison circuit during a second sampling count;
a counter connected to an output terminal of the selection module, wherein the counter is for counting according to the first output signal and the second output signal of the comparison circuit to obtain a total quantization value of the first sampling count and the second sampling count, so as to obtain an actual signal quantization result according to the total quantization value.