Imaging device and imaging method thereof

Abstract

The invention relates to an imaging device which comprises a pixel array. The pixel array includes a plurality of pixels which are arrayed into lines and rows, and a plurality of column circuits, wherein each column circuit corresponds to one row of pixels in the pixel array. Each column circuit comprises a comparator and a radix-minus-one complement counter, wherein the comparator compares signals from pixels of a corresponding row with ramp signals, and the radix-minus-one complement counter counts and conducts radix-minus-one complement calculation on output signals of the comparator.

Description

technical field [0001] The invention relates to the field of imaging, in particular to an imaging device and an imaging method thereof. Background technique [0002] CMOS image sensors have been widely used in many products. These products include mobile phones, tablet computers, cars, and security monitoring systems. Many applications place high demands on image sensors, such as achieving satisfactory results in terms of power consumption, noise and frame rate. However, the currently commonly used serial readout architecture cannot achieve good optimization of the above three indicators in CMOS image sensors. Therefore, it limits the application of CMOS image sensors in high-end products, such as large-array high-end 5M, 8M, and the adoption of higher resolution sensors. [0003] The traditional solution to this problem is to use a multi-channel serial structure. However, due to the systematic deviation among multiple channels, the image quality will be greatly affected...

AI Technical Summary

Problems solved by technology

However, due to the systematic deviation between multiple channels, the image quality will be greatly affected

Unsatisfactory image quality with multi-channel serial structures

Currently, there is no good solution to this technical problem

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