US 11,871,128 B2
Image sensing device having a mirroring circuit suitable for compensating an operating current
Hyeon June Kim, Gyeonggi-do (KR)
Assigned to SK hynix Inc., Gyeonggi-do (KR)
Filed by SK hynix Inc., Gyeonggi-do (KR)
Filed on Nov. 29, 2022, as Appl. No. 18/071,083.
Application 18/071,083 is a division of application No. 17/068,323, filed on Oct. 12, 2020, granted, now 11,539,901.
Claims priority of application No. 10-2020-0045972 (KR), filed on Apr. 16, 2020.
Prior Publication US 2023/0096575 A1, Mar. 30, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 25/60 (2023.01); G05F 3/26 (2006.01); H04N 25/77 (2023.01); H04N 25/709 (2023.01)
CPC H04N 25/60 (2023.01) [G05F 3/262 (2013.01); H04N 25/709 (2023.01); H04N 25/77 (2023.01)] 10 Claims
OG exemplary drawing
 
1. An image sensing device comprising:
a current supply circuit coupled between a supply terminal of a first voltage and a pair of output terminals;
an input circuit coupled between the pair of output terminals and a common node, and suitable for receiving a pixel signal and a ramp signal; and
a mirroring circuit coupled between the common node and a supply terminal of a second voltage, and suitable for compensating for an operating current, which flows between the common node and the supply terminal of the second voltage, based on the operating current when generating the operating current by mirroring the reference current, wherein the mirroring circuit compensates for the operating current by adjusting a compensation current when the reference current is changed.