公开(公告)号：US12250488B2

公开(公告)日：2025-03-11

申请号：US18393218

申请日：2023-12-21

Applicant: PROPHESEE

Inventor： Thomas Finateu ,  Christian Bouvier

IPC: H04N25/78 ,  H01L27/146

Abstract: A merged frame-based and event-based image sensor pixel is provided, comprising a reverse-biased photodiode; a frame-based signal readout circuit connected to a cathode of the photodiode; and an event-based signal readout circuit connected to an anode of the photodiode. Light received in the photodiode causes the production of electrons and holes. The recombination current of the holes is continuously measured for producing the event-based signal.

公开(公告)号：US11885673B2

公开(公告)日：2024-01-30

申请号：US17220761

申请日：2021-04-01

Applicant: PROPHESEE

Inventor： Daniel Matolin ,  Denis Bourke ,  Christian Bouvier

IPC: G01J1/42 ,  G01J1/46 ,  H04N25/77 ,  H04N25/778 ,  H04N25/766

CPC classification number: G01J1/4228 ,  G01J1/46 ,  H04N25/766 ,  H04N25/77 ,  H04N25/778

Abstract: A pixel circuit is provided for use in an image sensor. The pixel circuit includes a photosensitive element configured to generate a current signal in response to brightness of light impinging on the photosensitive element, and a converter configured to receive the current signal from the photosensitive element and generate a voltage signal based on the received current signal. The pixel circuit also includes a capacitor electrically coupled to the converter in series and configured to receive the voltage signal from the converter, and an amplifier electrically coupled, at an input, to the capacitor in series and configured to generate, at an output, an amplified signal based on an output signal from the capacitor, wherein there is no feedback between the output and the input of the amplifier. Further, the pixel circuit includes a reset device configured to reset the amplifier in response to a trigger signal being generated.