Image sensing device
AssigneeSK hynix Inc.
InventorEun Chang Lee
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Abstract
An image sensing device capable of generating a high dynamic range (HDR) image is disclosed. The image sensing device includes a pixel and a compensation circuit. The pixel configured to output to a sensing node, a sensing voltage corresponding to a voltage of a floating diffusion region, which is included therein and has first and second capacitances in respective first and second modes, the second capacitance being greater than the first capacitance. The compensation circuit controls, in a first section, an offset voltage level of the sensing node through a first path and boosts, in a second section, the sensing voltage through a second path.
Claims20
An image sensing device comprising:
- a pixel configured to output to a sensing node, a sensing voltage corresponding to a voltage of a floating diffusion region, which is included therein and has first and second capacitances in respective first and second modes, the second capacitance being greater than the first capacitance;
- and
- a compensation circuit configured to:
- control, in a first section, an offset voltage level of the sensing node through a first path, and
- boost, in a second section, the sensing voltage through a second path.
An image sensing device comprising:
- a pixel configured to output, to a sensing node, a sensing voltage corresponding to a voltage of a floating diffusion region;
- and
- a voltage controller configured to:
- control a first current running from the sensing node based on an offset voltage value of the sensing node when a first path is selected in a first section, and
- boost the first current when a second path is selected in a second section.
Dependencies are inferred from the claim text.