DYNAMIC VISION SENSORS CONFIGURED TO CALIBRATE EVENT SIGNALS USING OPTICAL BLACK REGION AND METHODS OF OPERATING THE SAME

摘要

A dynamic vision sensor including a dynamic vision sensor pixel array including an active region and an optical black region, the active region configured to output a plurality of first signals corresponding to a plurality of first events indicating a change in an intensity of light, the optical black region configured to output a plurality of second signals corresponding to a plurality of second events not indicating the change in the intensity of light, and processing circuitry configured to, generate a plurality of event signals based on the plurality of first signals, generate a plurality of noise signals based on the plurality of second signals, calculate a value representing real events among the plurality of first events based on the plurality of event signals and the plurality of noise signals, and selectively output the plurality of event signals based on the value representing real events and a threshold value.