Patent ID: 11885673
Assignee: PROPHESEE
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 26:
27. A method for controlling an event-based vision sensor including a plurality of pixels, comprising:
receiving a current signal in response to light impinging on a photosensitive element;
converting the current signal to a voltage signal;
generating a decoupled voltage signal by a capacitor based on the voltage signal, wherein the decoupled voltage signal is decoupled from the current signal;
generating an amplified signal by an open-loop amplifier based on the decoupled voltage signal, wherein there is no capacitive feedback between the amplified signal and the decoupled voltage signal, and further wherein the open-loop amplifier comprises a plurality of stacked transistors providing a well-controlled and high-accuracy open-loop gain of the open-loop amplifier, wherein a gate of at least one of the plurality of stacked transistors is configured to receive a bias voltage that sets an operation point of the open-loop amplifier;
generating a trigger signal when the amplified signal matches a condition; and
resetting the open-loop amplifier when the trigger signal is generated.