Patent ID: 6704494
Filing Date: 2004-03-09
Classification: H04N

Abstract:
A recording medium having recorded therein a computer program for use in a variable length coding system, which assigns, to a plurality of source symbols, code words having a code length according to occurrence probability of the source symbols, to output code words corresponding to inputted source symbols as coded-data, said program including code components for performing the steps of:storing a code-word table, wherein a plurality of code words including code words, which are capable of being decoded both in forward and backward direction and which are formed so that the delimiters of the code words are capable of being identified by a predetermined weight of the code words, correspond to source symbols; selecting code words corresponding to said inputted source symbols from said code-word table; and preparing coded-data every synchronization interval by using the code words selected by said code-word selecting step, and setting a synchronization interval to said code words by inserting stuffing codes capable of being decoded in the backward direction.