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US 12,120,440 B2Granted
Image sensor
AssigneeSK hynix Inc.
InventorDong Gwi Choi
Life of this patent
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Abstract
Disclosed is an image sensor including a first comparison circuit suitable for comparing an active pixel signal with a ramp signal to generate a first comparison signal through a first comparison output terminal, and a first compensation circuit coupled to the first comparison output terminal, and suitable for selectively applying a first compensation noise, which corresponds to a power noise generated by the first comparison circuit, to the first comparison output terminal on the basis of a first control signal.
Claims18
An image sensor comprising:
- a first comparison circuit suitable for comparing an active pixel signal with a ramp signal to generate a first comparison signal through a first comparison output terminal;
- an output circuit suitable for receiving the first comparison signal and generating an output signal corresponding to the first comparison signal;
- and
- a first compensation circuit coupled between the first comparison output terminal and a supply terminal of a first compensation noise, and suitable for selectively applying the first compensation noise, which corresponds to a power noise generated by the first comparison circuit, to the first comparison output terminal on the basis of a first control signal.
1 more element
An image sensor comprising:
- a first comparison circuit suitable for comparing an active pixel signal with a ramp signal to generate a first comparison signal through a first comparison output terminal;
- a second comparison circuit coupled to the first comparison output terminal, and suitable for comparing the first comparison signal with a reference signal to generate a second comparison signal through a second comparison output terminal;
- and
- a compensation circuit coupled between an input terminal of the reference signal and a supply terminal of a compensation noise, and suitable for selectively applying the compensation noise, which corresponds to a power noise generated by the first comparison circuit, to the input terminal on the basis of at least one control signal.
1 more element
An image sensor comprising:
- a pixel array including a dark region allocated to at least one column and an active region allocated to at least one column;
- a signal converter including a comparison circuit and a compensation circuit coupled between a supply terminal of the compensation noise and an output terminal or an input terminal of the comparison circuit, and suitable for converting a dark pixel signal, which is generated from the dark region, into a dark pixel code, converting an active pixel signal, which is generated from the active region, into an active pixel code, and compensating for the active pixel code by applying the compensation noise to the output terminal or the input terminal of the comparison circuit on the basis of a control signal;
- and
- a controller suitable for generating the control signal on the basis of the dark pixel code and a reference pixel code.
1 more element
Dependencies are inferred from the claim text.