Row selection column arbitration AER image sensor event transmission device and method

Abstract

The invention relates to the field of analog integrated circuit design. In order to omit the row arbitration structure and reduce the arbitration time, and adopt the self-adaptive duration row selection signal, the row selection time can be saved, the delay can be further reduced, and the working speed can be improved. For this reason, the technical solution adopted by the present invention is that the row selection and column arbitration AER image sensor event transmission device and method are implemented by using the pixel array, the row selection module, the column arbitration module and the row and column encoding module, and the pixel array is used to sense light to generate events. The module generates the row selection signal of the kth row, and the row address encoding is performed by the row and column encoding module, and the number of events in the kth row is judged, and then the column request signal is arbitrated by the column arbitration module, and the selected signal is encoded by the row and column encoding module. The row and column address signals send out request signals, and the present invention is mainly used in the design and manufacture of analog integrated circuits.

Description

technical field [0001] The invention relates to the field of analog integrated circuit design, especially the field of image sensor readout circuits, and the method is applied to AER (Address-event Representation, AER) image sensor data transmission. It specifically relates to a device and method for row selection and column arbitration AER image sensor event transmission. Background technique [0002] Nowadays, image sensors have been applied to various fields of people's lives, and people are also pursuing image sensors with higher resolution, lower power consumption, and faster speed. However, each frame of the traditional frame rate image sensor contains a large amount of redundant data, which restricts the improvement of its working speed. Therefore, scientists have developed a bionic AER asynchronous image sensor, which only outputs changing pixels, which improves the working speed while reducing a large amount of data. It can be applied to areas with high speed requ...

AI Technical Summary

Problems solved by technology

[0003] The event transmission method of traditional AER image sensor row and column arbitration takes a long time for arbitration processing. When an event is transmitted for a certain pixel, the rest of the pixels are waiting to be processed. The waiting time increases with the increase of the pixel array and event rate.

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