Patent ID: 6850648

Claim:
A coded image data decoding system for depacking and variable-length decoding image data packed by an image compressing/decompressing format wherein the sum of the length of components other than variable-length code components in one block and the length of an end code is not shorter than a bit length obtained by subtracting 1 bit from the number of bits of the maximum length of variable-length code words, said coded image data decoding system comprising: memory means for storing code strings for one video segment; decoding means for variable-length decoding code strings outputted from said memory means; block storing means, provided between said memory means and said decoding means so as to be capable of storing code strings for one block, for storing code strings for concatenated two blocks; and depacking means, including said block storing means, for suitably combining required portions of sequentially supplied code strings to complete code strings for one block when code strings supplied from said memory means are not code strings for one block.