Patent ID: 11943543
Assignee: SK HYNIX INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. The imaging device according to claim 13, wherein:
in a situation where the at least one controllable item includes the conversion gain and the analog gain, and the amount of light exposure and the exposure time are uncontrollable items, when the ratio of the low light-transmittance pixels saturated in the target region is equal to or less than the second ratio, and the ratio of the high light-transmittance pixels each having a response of a predetermined value or less in the target region is less than the first ratio,
the set value calculation unit determines whether the ratio of the low light-transmittance pixels saturated in the target region is maintained at the second ratio or less in a state where the first conversion gain is set for the low light-transmittance pixels, sets the first conversion gain or the second conversion gain for the low light-transmittance pixels according to the result of determination, and sets the first conversion gain or the second conversion gain in a predetermined pattern for the high light-transmittance pixels; and
the set value calculation unit sets a maximum analog gain for the low light-transmittance pixels and the high light-transmittance pixels within a predetermined range in which conditions indicating that the ratio of the low light-transmittance pixels saturated in the target region is equal to or less than the second ratio and the ratio of the high light-transmittance pixels each having a response of the predetermined value or less in the target region is less than the first ratio are maintained.