南京邮电学院研制成功的数字式彩色会议电视系统,现已通过鉴定。该系统采用菱形滤波和正交亚取样内插等技术,利用行、场消隐时间,充分利用频谱和采用二维DPCM双字长压缩编码的方法,具有图象清晰、色彩逼真、层次分明、画面稳定、信噪比高等优点。系 Nanjing University of Posts and Telecommunications developed a successful digital color television conference system, has now been identified. The system uses diamond filtering and orthogonal sub-sampling interpolation techniques, using line and field blanking time, make full use of spectrum and using two-dimensional DPCM double-word length compression coding method, with clear images, vivid colors, structured, Picture stability, high signal to noise ratio advantages. system