Patent ID: 11956416
Assignee: SK HYNIX INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An image sensing device comprising:
a first active test block including first active pixels and a first heating element, each of the first active pixels configured to generate a first pixel signal corresponding to incident light, and the first heating element configured to provide heat to the first active pixels at a first temperature;
a second active test block including second active pixels and a second heating element, each of the second active pixels configured to generate a second pixel signal corresponding to the incident light, and the second heating element configured to provide heat to the second active pixels at a second temperature higher than the first temperature;
a first optical black test block including first optical black pixels and a third heating element, each of the first optical black pixels configured to generate a third pixel signal irrelevant to the incident light, and the third heating element configured to provide heat to the first optical black pixels at the first temperature;
a second optical black test block including second optical black pixels and a fourth heating element, each of the second optical black pixels configured to generate a fourth pixel signal irrelevant to the incident light, and the fourth heating element configured to provide heat to the second optical black pixels at the second temperature; and
a signal processing unit configured to process the first to fourth pixel signals.