公开(公告)号：US20240422286A1

公开(公告)日：2024-12-19

申请号：US18744189

申请日：2024-06-14

Applicant: PROPHESEE

Inventor： Vitor SCHWAMBACH ,  Ludovic CHOTARD ,  Guillaume SCHON ,  Thulaxan NAGULESWARAN ,  Pierre-Antoine DOISNEAU

IPC: H04N5/765 ,  G06F13/42

Abstract: A method for transmitting an event stream produced by an event-based vision sensor over an interface configured to transmit data in successive packets grouped in successive frames comprises the steps of assigning a period to the frames; reading events with respective timestamps from the event stream; and filling packets of a current frame only with events that have a timestamp within the period of the current frame.

公开(公告)号：US20240276116A1

公开(公告)日：2024-08-15

申请号：US18272330

申请日：2022-01-13

Applicant: PROPHESEE

Inventor： Guillaume SCHON ,  Andrea MASCHERONI ,  Thulaxan NAGULESWARAN ,  Ting AN ,  Patrice PERRIN ,  Pierre-Antoine DOISNEAU

IPC: H04N25/707 ,  H04N25/77

CPC classification number: H04N25/707 ,  H04N25/77

Abstract: A method is provided for operating an event-based image sensor comprising a plurality of pixel circuits arranged to form a pixel array, each pixel being arranged at a location defined by an address defined by pixel coordinates in the array, wherein each pixel circuit is configured to generate an event, such that each time a light intensity change is detected, an event is characterized by a polarity reflecting a direction of the change. The method comprises performing a line readout of groups of adjacent pixels of a line of pixels, wherein the line readout comprises generating, for each group, at least one packet expressing occurrences of events of a same polarity in said group, each packet being characterized by a polarity and a group address. The method further comprises sending the packets to a processing pipeline where the packets are successively processed, involving a memory access based on the group address, wherein two packets sharing the same group address have different polarities and are consecutively processed.