Device for processing digital signals first coded by means of variable length coding and device for inversely processing signals thus processed

摘要

Apparatus for processing digital signals which are organised into image blocks and consist of hierarchically ordered data types. This apparatus comprises an addressable memory (40) for storing the said signals, a circuit (10) for counting, per slice, the number of bits, corresponding in these signals to each data type, a circuit (20) for allocating, to each of the image slices and according to a defined proportion, the number of bits to be transmitted in channels with distinct priorities, and, at the output of the said circuits, a circuit (30) for control of redistribution of the bits for each of the slices and in packets of given lengths, comprising at least the first bits of one block and possibly excess bits from other blocks. The invention also relates to the apparatus for inverse processing on reception. Application: digital television. IMAGE