Analog to digital conversion circuit, image sensing device having the same and method of driving image sensing device

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United States of America Patent

PATENT NO 8941528
SERIAL NO

14049946

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Abstract

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An analog-to-digital conversion circuit includes a reference current generating unit suitable for generating a reference current varied by a given level in a sampling stage, a ramp voltage generating unit suitable for generating a ramp voltage corresponding to the reference current, and a comparison unit suitable for comparing the ramp voltage with a voltage level of a pixel signal to output a comparison signal.

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Patent Owner(s)

  • SK HYNIX INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Yun, Gun-Hee Gyeonggi-do, KR 10 51

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