US 12,088,925 B1
Flicker detection using event-based readout circuits
Francesco Cannillo, Munich (DE); and Emanuele Mandelli, Mountain View, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Sep. 13, 2022, as Appl. No. 17/931,883.
Int. Cl. H04N 23/745 (2023.01); H04N 25/443 (2023.01); H04N 25/53 (2023.01); H04N 25/75 (2023.01); H04N 25/77 (2023.01)
CPC H04N 23/745 (2023.01) [H04N 25/443 (2023.01); H04N 25/53 (2023.01); H04N 25/75 (2023.01); H04N 25/77 (2023.01)] 17 Claims
OG exemplary drawing
 
1. A system, comprising:
an image sensor configured to capture light for generating images; and
a first circuit configured to detect flicker of the light received by the image sensor, comprising:
at least one event-based readout circuit configured to detect a series of events associated with the flicker of the light captured by the image sensor; and
at least one event-based processing circuit configured to determine a frequency of the flicker of the light captured by the image sensor based on the series of events detected by the event-based readout circuit;
a second circuit configured to obtain signals from the image sensor for generating the images;
wherein one of the first circuit and the second circuit is electrically coupled to a cathode of at least one pixel of the image sensor, and another one of the first circuit and the second circuit is electrically coupled to an anode of the at least one pixel of the image sensor.