公开(公告)号：US12063444B1

公开(公告)日：2024-08-13

申请号：US18272330

申请日：2022-01-13

申请人： PROPHESEE

发明人： Guillaume Schon ,  Andrea Mascheroni ,  Thulaxan Naguleswaran ,  Ting An ,  Patrice Perrin ,  Pierre-Antoine Doisneau

IPC分类号： H04N25/707 ,  H04N25/40 ,  H04N25/47 ,  H04N25/702 ,  H04N25/703 ,  H04N25/77

CPC分类号： H04N25/707 ,  H04N25/77

摘要： 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.