Hybrid pixel circuit for acquiring frame-based and event-based images

Abstract

The present invention provides a pixel circuit. The pixel circuit includes: a current change detector for detecting changes in photocurrent from an input port; one or more pixel units, each pixel unit including one or more photodiodes and corresponding transfer gate transistors and reset transistors, wherein the source of each transfer gate transistor is connected to the cathode of the corresponding photodiode, and the drain of each transfer gate transistor is connected to the source of the reset transistor; one or more selector circuits, the selector circuit connects the drain of the reset transistor to the input port of the current change detector or a fixed voltage in response to a control signal. The present invention achieves good registration of frame-based images and event-based images.

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