CMOS IMAGE SENSOR
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United States of America Patent
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Issued Date -
Aug 11, 2011
app pub date -
May 17, 2010
filing date -
Feb 5, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Disclosed herein is a Complementary Metal-Oxide Semiconductor (CMOS) image sensor. The CMOS image sensor includes a pixel array, a frame memory, and an analog-to-digital converter. The pixel array includes N unit pixels for converting optical signals, caused by light, into electric signals. The frame memory eliminates offset voltage included in reset voltage and signal voltage transmitted from the pixel array and internal offset voltage, and performs Correlated Double Sampling (CDS) on the reset voltage and the signal voltage. The analog-to-digital converter converts an analog signal, transmitted from the frame memory, into a digital signal.
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