Patent ID: 6744928
Filing Date: 2004-06-01
Classification: H04N

Abstract:
A decoding method for subjecting coded data to variable-length decoding, inverse orthogonal transform and signal format conversion to obtain image data,at the time when the maximum code word length per code word for said coded data is n (n: a natural number), said variable-length decoding step comprising: (1) a first table reference step for referring to a first table by using j-bit data of said code word as an input, for outputting code-length-related information and decoded data from said first table when code length s is j or less, and for outputting code-length-related information and second table access information when code length s is j+1 or more, and (2) a second table reference step for computing a second table address from said second table access information and said s-bit data of said code word, for referring to said second table in accordance with said second table address, and for outputting decoded data.