US 11,950,003 B2
Vision sensor and operating method of the same
Yunjae Suh, Suwon-si (KR); Jongwoo Bong, Seoul (KR); Seungnam Choi, Seoul (KR); and Junseok Kim, Hwaseong-si (KR)
Assigned to Samsung Electronics Co., Ltd., Gyeonggi-do (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on May 31, 2022, as Appl. No. 17/828,331.
Claims priority of application No. 10-2021-0073025 (KR), filed on Jun. 4, 2021.
Prior Publication US 2022/0394195 A1, Dec. 8, 2022
Int. Cl. H04N 25/47 (2023.01); G06T 7/20 (2017.01); H04N 23/71 (2023.01); H04N 25/40 (2023.01); H04N 25/75 (2023.01); H04N 25/76 (2023.01)
CPC H04N 25/47 (2023.01) [G06T 7/20 (2013.01); H04N 23/71 (2023.01); H04N 25/40 (2023.01); H04N 25/75 (2023.01); H04N 25/76 (2023.01)] 20 Claims
OG exemplary drawing
 
1. A vision sensor comprising a plurality of pixels arranged in a matrix form, wherein each of the plurality of pixels comprises:
a sensing circuit configured to output an output voltage by sensing a change of light;
a comparison circuit configured to output a comparison signal indicating whether an event has occurred, by comparing the output voltage to an event threshold; and
an event detection circuit configured to generate internal event signals by sampling the comparison signal at each of a plurality of sampling time points, and configured to output a valid event signal based on the internal event signals.