Noise Reduction of CMOS Image Sensors Using High-Speed Non-Destructive Signal Readout (II)

In this paper, we propose a method of the noise reduction using frame oversampling and a CMOS image sensor with non-destructive high-speed readout mode. The technique enables the use of the high-gain column amplifier and integration of signals without noise accumulation. The column amplifier is effective to reduce the noise due to the wideband amplifier noise and the quantization noise of ADC. The least square method can further reduce the random noise for the sensor system.