Patent ID: 6104754
Filing Date: 2000-08-15
Classification: H04N

Abstract:
A variable length coding system, which assigns, to a plurality of source symbols, code words having a code length corresponding to the occurrence probability of the source symbols and which outputs code words corresponding to inputted source symbols as coded data, said variable length coding system comprising:a code-word table storing therein a plurality of code words including codes words, which are capable of being decoded both in forward and backward directions and which are formed so that delimiters of the code words are capable of being identified by a predetermined weight of the code words, so that said plurality of code words correspond to source symbols;code-word selecting means for selecting code words corresponding to inputted source symbols from the code-word table; andsynchronization interval setting means for preparing coded data for each of predetermined synchronization intervals using code words selected by said code-word selecting means and for inserting stuffing codes capable of being decoded in the backward direction.