Patent ID: 11895418
Assignee: SK HYNIX INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 5:
6. An image sensing device comprising:
a reference circuit coupled between a high voltage terminal and a control node, and configured to supply a reference voltage to the control node based on a reference control signal;
a sensing circuit coupled between the control node and an output terminal of a pixel signal, and configured to sense a slope of the pixel signal based on the reference control signal and a boost control signal, wherein the sensing circuit is configured to supply a control voltage to the control node according to the slope sensed;
a subtraction circuit coupled between the high voltage terminal and a low voltage terminal, and configured to generate a subtraction current corresponding to the reference voltage; and
a current supplying circuit coupled between the output terminal and the high voltage terminal, and configured to supply a pre-charge current, to which the subtraction current is applied, to the output terminal based on the control voltage and the subtraction current.