In order to realize color video capture using area array CCD

a real-time color video capture system is established. This paper presents the hardware and software design of a color video capture system of area array CCD ICX424AQ from Sony company

which can be used in color video capture system. The paper made a detailed analysis on the structure parameters of area-array CCD and the color video gathering principle. On that basis

the design realizes the CCD control sequence and the timing logic of the whole capture system. The noises of the video signal (KTC noise and 1/f noise) are filtered by using the Correlated Double Sampling (CDS) technique

and the signal-to-noise ratio of the system is enhanced. The area array CCD image sensor is covered by Bayer color filter array (CFA). Each pixel has only one component of three primary colors. In order to obtain full chromaticity at every pixel

the paper adopts an enhanced bilinear algorithm. The algorithm compute green components first using bilinear interpolation algorithm

then make interpolation of Red components and Blue components according to distributing of green components. The algorithm made a compromise solution between the complex of hardware implementation and image quality through interpolating. The CCD is working under progressive scan mode. All pixel signals are read out simultaneously at the exposing time of 0.32ms. The whole system is controlled by FPGA

the pixel data readout is interpolated and then transmits by transmitting chip SiI1162. At last

the design realizes the real-time video display on TFT-LCD.