Patent ID: 6661923
Filing Date: 2003-12-09
Classification: G10L

Abstract:
A coding device comprising:transform means for converting an input signal to information of a plurality of frequency bands; coding means for coding the information of each band from the transform means; code string generation means for generating a code string by generating a plurality of partial code strings having auxiliary data and main data generated with respect to codes equivalent to information of each predetermined unit time from the coding means, and rearranging the partial code strings in an order from a partial code string of a highest importance from a leading part of a code string block of each predetermined unit time; and compression rate change means for changing a compression rate of the code string generated by the code string generation means, wherein the compression rate change means generates a code string having a different compression rate than the code string generated by the code string generation means by cutting out a portion of the leading part of the code string block for each predetermined unit time.