Patent ID: 11889208
Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A method of reading out an event from a pixel of an event-driven sensor, the method comprising:
propagating, through a series of first bypassing circuits of a column readout circuit, a first flag signal, wherein the column readout circuit further comprises a plurality of groups of column register cells, each group of column register cells comprising at least two column register cells, each column register cell being coupled to a corresponding one of the column output lines, the column register cells of each group being coupled in series with each other to propagate the first flag signal from a first to a last column register cell of the group, wherein each first bypassing circuit is configured to propagate the first flag signal:
to the first column register cell of its group if an event is indicated on one of the column output lines coupled to one of the column register cells of the group; and
to a flag output of the first bypassing circuit, bypassing the column register cells of the group, if no event is indicated on one of the column output lines coupled to one of the column register cells of the group; and, activating, by one of the column register cells, a column event output signal when it receives the first flag signal while an event is indicated on the column output line.