| 摘要 |
The present invention relates to a dispersion video codec device using a residual signal between frames and an encoding/decoding method thereof, more particularly to a dispersion video codec device using a residual signal between frames characterized by comprising a first signal unit (106) which generates a residual signal of a WZ frame and a preceding key frame; a first quantization unit (107) which quantizes the residual signal; a first gray code unit (108) which allocates a gray code to each of the quantized level values; an LDPCA encoding unit (109) which LDPCA channel encodes the allocated gray code and generates a parity bit; an LDPCA decoding unit (114) which performs a LDPCA decoding using the parity bit; an inverse gray code (115) which converts the gray code from the decoded signal to a quantization level value; an inverse quantization unit (116) which inverse quantizes the quantization level value; an auxiliary information generation unit (105) which generates auxiliary information on original image information by referring to the key frame; a second signal unit (111) which generates a residual signal of the auxiliary information and the preceding key frame; a second quantization unit (112) which quantizes the residual signal generated in the second signal unit (111); and a second gray code unit (113) which allocates a gray code to each of the level values quantized in the second quantization unit (112). [Reference numerals] (AA) PDWZ encoder;(BB) PDWZ decoder |
