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AssigneeKabushiki Kaisha Toshiba
InventorsTakeshi Chujoh, Toshiaki Watanabe, Yoshihiro Kikuchi, Tateshi Nagai
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A coding and/or decoding system includes: a code-word table for storing therein a plurality of code 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 the code words correspond to different source symbols; an encoder for selecting code words corresponding to inputted source symbols from the code-word table; and a synchronization interval setting part for preparing coded data every predetermined interval using the code words selected by the encoder and for inserting stuffing codes capable of being decoded in the backward direction. Thus, it is possible to decrease useless bit patterns to enhance the coding efficiency by smaller amounts of calculation and storage, and to decode variable length codes both in the forward and backward directions even if the synchronization interval is set every interval using the stuffing bits.
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 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 variable length decoding system for decoding coded data, which are of variable length codes of code words containing code words capable of being decoded both in forward and backward directions and into which stuffing codes capable of being decoded in the backward direction are inserted every predetermined synchronization interval, said variable length decoding system comprising:
A variable length decoding system for decoding coded data, which are of variable length codes of code words containing code words capable of being decoded both in forward and backward directions and into which stuffing codes capable of being decoded in the backward direction are inserted every predetermined synchronization interval, said variable length decoding system comprising:
A variable length decoding system for decoding coded data every predetermined synchronization interval, said coded data comprising variable length codes, which are of code words containing code words capable of being decoded both in forward and backward directions, and said coded data being prepared by code words corresponding to layered source symbols to be multiplexed, said variable length decoding system comprising:
A variable length decoding system for decoding coded data every predetermined synchronization interval, said coded data comprising variable length codes, which are of code words containing code words capable of being decoded both in forward and backward directions, and said coded data being prepared by code words corresponding to layered source symbols to be multiplexed, said variable length decoding system comprising:
A variable length decoding system for decoding coded data, which are of variable length codes of code words containing code words capable of being decoded both in forward and backward directions and into which stuffing codes capable of being decoded in a backward direction are inserted every predetermined synchronization interval, said variable length decoding system comprising:
A recording medium for having recorded therein data for use in a variable length coding and/or decoding system, said recording medium having recorded therein variable length coded data capable of being inputted and outputted by the variable length coding and/or decoding system, said recording medium recording therein:
A recording medium for having recorded therein data for use in a variable length coding and/or decoding system, said recording medium having recorded therein transform coefficient data capable of being produced by orthogonal transforming every block in an image coding and/or decoding system, said recording medium recording therein:
A recording medium having recorded therein a 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 recording medium including at least the steps of:
A recording medium having recorded therein a program for use in a variable length decoding system for decoding coded data, which are of variable length codes of code words including code words capable of being decoded both in forward and backward directions and into which stuffing codes capable of being decoded in the backward direction are inserted every predetermined synchronization interval, said recording medium including at least the steps of:
Dependencies are inferred from the claim text.