High speed HD CCD adaptive correlated double sampling technique

Correlated double sampling technique is widely used in CCD video capture, and can effectively eliminate the reset noise, white noise CCD output noise. However, when the CCD works in the state of the high frame rate, the need for high-speed output of data faster pixel clock appears the sampling position is unstable. This article used adaptive correlated double sampling technique, could adaptively adjust the phase of sampling pulses, so that the correlated double sampling of two sampling pulses were collected at a reasonable sampling positions, and pixel information could be collected correctly. Adaptive technology was used to adjust the CCD correlated double sampling location, to make HD high-speed CCD pixels high frequency, correlated double sampling also could be adopted in a reasonable sampling location, the CCD working in good condition.