Verfahren und System zum Kodieren und/oder Dekodieren der Farbartsignale eines Bildsignals

摘要

In an encoding and decoding method for color signal components of picture signals having a plurality of resolutions, an encoding system and a decoding system can be used to obtain color pictures with higher definition, so that color difference signals having a macroblock of 4:4:4 format are encoded by a circuit 102. These color difference signals with highest definition are down-sampled by a down sampling circuit (103) and then encoded by a circuit 101. These color difference signals with intermediate definition are further down-sampled by a down sampling circuit (104) to produce color difference signals with a lowest definition. These color difference signals, having a macroblock of 4:2:0 format, are supplied to and encoded by a circuit 100. Data output form the circuits 100, 101, and 102 are combined by a combining circuit (105) and transmitted or recorded. <IMAGE>