A high-speed image sensor with frame rate up to bandwidth limit rate

Abstract

A high-speed image sensor whose frame rate can reach the bandwidth limit rate belongs to the technical field of VLSI electrical components. It can complete the analog-to-digital conversion process in parallel at the pixel level, and is equivalent to a binary digital data after the analog-to-digital conversion is completed. The storage array can be directly and seamlessly grafted on the high-speed data reading and transmission technology used in the existing memory system. Since the image exposure process and the image data reading and transmission process are independent of each other, they can be overlapped in time. Therefore, its imaging rate and frame rate can reach the limit rate allowed by the digital data transmission bandwidth. The present invention also provides an improved solution to separate the exposure process and the analog-to-digital conversion process independently, so that the exposure process and the analog-to-digital conversion process can be overlapped in time sequence, and the exposure time can be maximized. The invention can output image data with arbitrary precision, and can be directly combined with a processor to form high-speed image shooting.

Description

technical field [0001] The invention belongs to the technical field of electric components of VLSI, and relates to a high-speed image sensor. Background technique [0002] High-speed cameras can capture the instantaneous state of objects in a very short time, so they are widely used in industry, national defense and scientific research. For example, in the process of recording and studying high-frequency vibrations, explosions or impacts, high-speed cameras are extremely important recording and detection means. However, due to the extremely complex signal conversion process involved, in order to maximize the number of frames that can be captured per unit time, high-speed cameras have extremely high requirements for electronic circuits such as analog-to-digital conversion and signal transmission. Also because of this, the design and manufacturing process of high-speed cameras is usually relatively complicated, so the price is high, which makes it difficult to popularize and ...

AI Technical Summary

Problems solved by technology

However, due to the extremely complex signal conversion process involved, in order to maximize the number of frames that can be captured per unit time, high-speed cameras have extremely high requirements for electronic circuits such as analog-to-digital conversion and signal transmission.

Because of this, the design and manufacturing process of high-speed cameras is usually more complicated, so the price is high, which makes it difficult to popularize and apply in various fields

In addition, because of its complex circuit and large volume, it also limits its use in many related fields.

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