Image sensing device
AssigneeSK hynix Inc.
InventorsJeong Ik CHOI, Gun Hee YUN, Hoe Sam JEONG
Life of this patent
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Abstract
An image sensing device includes a pixel array including a plurality of pixels connected to a plurality of row lines and a plurality of column lines and configured to output a plurality of pixel signals through the plurality of column lines; a ramp generator configured to generate a first ramp signal and a second ramp signal; an analog-to-digital converter (ADC) configured to convert the plurality of pixel signals into digital signals in response to the first ramp signal and the second ramp signal; and a column line controller configured to selectively connect the plurality of column lines to the ADC.
Claims20
An image sensing device comprising:
- a pixel array including a plurality of pixels connected to a plurality of row lines and a plurality of column lines and configured to output a plurality of pixel signals through the plurality of column lines;
- a ramp generator configured to generate a first ramp signal and a second ramp signal;
- an analog-to-digital converter (ADC) configured to convert the plurality of pixel signals into digital signals in response to the first ramp signal and the second ramp signal;
- and
- a column line controller configured to selectively connect the plurality of column lines to the ADC.
An image sensing device comprising:
- a first pixel configured to output a first pixel signal through a first column line;
- a second pixel configured to output a second pixel signal through a second column line;
- a switching circuit that selectively connects, based on a switching control signal, the first column line to one of a first node and a second node and selectively connects, based on the switching control signal, the second column line to one of the first node and the second node;
- a first ramp generator configured to generate a first ramp signal;
- a second ramp generator configured to generate a second ramp signal;
- a first conversion circuit configured to compare the first ramp signal with a signal applied to the first node, amplify a result of the comparison, and generate a first output signal.
- a second conversion circuit configured to compare the second ramp signal with a signal applied to the second node, amplify a result of the comparison, and generate a second output signal.
Dependencies are inferred from the claim text.