The transmission and reception of high definition television has a reduced flow rate of clinical

摘要

To reduce the bit rate digital data, the transmission system includes means 3, 7, 37 in order to determine for each image in the set of vectors - speed a - assembly containing the vectors which are encountered most frequently, in this image, and means 36, 39, 13, 14, 18 to be transmitted digitally once per image, the characteristics of all the vectors of this under - assembly, and if the vector - speed of a portion of the image to be transmitted is an element of the under - assembly, it is defined by reference to the under - assembly, whereas if it is not an element of the assembly under -, another mode of transmission is used for the part of the current image, in which the speed vector is not used, but in which the analog video data are transmitted with a spatial definition lower, but at a rate of the frame. / p & & p & application to the television system known in which the complementary data datv of the video data are transmitted digitally.