公开(公告)号：US4743960A

公开(公告)日：1988-05-10

申请号：US870128

申请日：1986-06-03

申请人： Gerard Duvic ,  Michel Veillard ,  Laurent Paris ,  Patrice Senn

发明人： Gerard Duvic ,  Michel Veillard ,  Laurent Paris ,  Patrice Senn

IPC分类号： H04N9/67 ,  H04N9/64 ,  H04N9/77 ,  H04N9/78 ,  H04N11/04

CPC分类号： H04N9/64 ,  H04N9/77 ,  H04N9/78

摘要： Circuit for producing analog primary signals of a television signal from its digital luminance and chrominance components comprising in series an interpolating digital filter, a digital dematrixer and three digital - analog converters.The interpolating digital filter carried out an oversampling of the luminance signal Y in a ratio of 2 and an oversampling of each chrominance signal CR, CB in a sampling ratio such that the sampling frequency of the luminance and chrominance digital signals has the same sampling frequency. The digital dematrixer produces the primary digital color signals from the oversampled luminance and chrominance components.

摘要翻译： 用于从其数字亮度和色度分量产生电视信号的模拟主信号的电路，包括内插数字滤波器，数字dematrixer和三个数模转换器。 内插数字滤波器以比例2对亮度信号Y进行过采样，并以采样比使每个色度信号CR，CB过采样，使得亮度和色度数字信号的采样频率具有相同的采样频率。 数字dematrixer从过采样的亮度和色度分量产生主要的数字彩色信号。