US 12,413,872 B2
Image sensor and image processing system
Eun Chang Lee, Gyeonggi-do (KR); and Min Seok Shin, Gyeonggi-do (KR)
Assigned to SK hynix Inc., Gyeonggi-do (KR)
Filed by SK hynix Inc., Gyeonggi-do (KR)
Filed on Mar. 28, 2023, as Appl. No. 18/190,975.
Claims priority of application No. 10-2022-0125348 (KR), filed on Sep. 30, 2022.
Prior Publication US 2024/0114261 A1, Apr. 4, 2024
Int. Cl. H04N 25/77 (2023.01); G01S 7/4913 (2020.01); H10F 39/00 (2025.01); H10F 39/18 (2025.01)
CPC H04N 25/77 (2023.01) [G01S 7/4913 (2013.01); H10F 39/18 (2025.01); H10F 39/8037 (2025.01)] 12 Claims
OG exemplary drawing
 
1. An image sensor comprising:
a first tap pixel;
a second tap pixel; and
an overflow detection circuit suitable for:
detecting overflow of the first tap pixel based on a first tap pixel signal outputted from the first tap pixel and overflow of the second tap pixel based on a second tap pixel signal outputted from the second tap pixel, and
forming a current path from an overflow current source to a ground voltage terminal when a voltage of the first tap pixel signal or a voltage of the second tap pixel signal drops below a predetermined voltage.