DECODING APPARATUS AND DECODING METHOD

摘要

A decoding apparatus comprises: decoding means which receives a first code sequence of a hierarchical structure as an input, decodes a code sequence of a selected first layer and higher layers in the first code sequence, outputs a detection signal when an error is detected while the code sequence is being decoded, and detects a second code sequence indicating the start of the first layer and higher layers in a set code sequence parsing position of the first sequence; and means for setting a code sequence parsing position which receives the detection signal and sets the parsing position of the code sequence in such a way that code sequence parsing performed by the decoding means is returned from a point at which code sequence parsing is being performed to a point at which code sequence parsing has been performed in the first code sequence.