CMOS image sensor having a pixel array in a wider dynamic range
First Claim
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1. A CMOS image sensor based on a correlated double sampling, the CMOS image sensor comprising:
- a) a single common node;
b) a plurality of unit pixels in parallel connected to the single common node;
c) an amplifying component coupled to the single common node for amplifying a voltage of the single common node and outputting the amplified voltage;
d) an output component for receiving the amplified voltage from the amplifying component and outputting a data voltage level and a reset voltage level, wherein the unit pixel includes;
a generating component for receiving light from an object and for generating and integrating photoelectric charges, a transfer component for transferring the photoelectric charges generated in the generating component to a first node, a reset component for resetting the first node, and an addressing component for receiving address signals from an external controller, wherein a gain of the amplifying component is given by
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Abstract
The present invention relates to a CMOS (Complementary Metal Oxide Semiconductor) image sensor; and, more particularly, to a pixel array of the CMOS image sensor in a wider dynamic range. A CMOS image sensor based on a correlated double sampling comprises a single common node, a plurality of unit pixels in parallel connected to the single common node, an amplifying means coupled to the single common node for amplifying a voltage of the single common node and outputting the amplified voltage, and an output means for receiving the amplified voltage from the amplifying means and outputting a data voltage level and a reset voltage level.
38 Citations
9 Claims
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1. A CMOS image sensor based on a correlated double sampling, the CMOS image sensor comprising:
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a) a single common node;
b) a plurality of unit pixels in parallel connected to the single common node;
c) an amplifying component coupled to the single common node for amplifying a voltage of the single common node and outputting the amplified voltage;
d) an output component for receiving the amplified voltage from the amplifying component and outputting a data voltage level and a reset voltage level, wherein the unit pixel includes;
a generating component for receiving light from an object and for generating and integrating photoelectric charges, a transfer component for transferring the photoelectric charges generated in the generating component to a first node, a reset component for resetting the first node, and an addressing component for receiving address signals from an external controller, wherein a gain of the amplifying component is given by - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification