Self adaptive variable length decoding method for image data


Application Number: 00108368
Application Date: 1994.12.16
Publication Number: 1280421
Publication Date: 2001.01.17
Priority Information: 1993/12/16 KR 28074/1993; 1994/12/15 KR 34497/1994
International: H03M7/42;H04N7/24
Applicant(s) Name: Samsung Electronics Co., Ltd.
Address:
Inventor(s) Name: Cho Chae-Moon;Chung Je-Chang
Patent Agency Code: 11038
Patent Agent: feng xun
Abstract An adaptive variable-length coding/decoding method performs an optimal variable-length coding and decoding depending on an intra mode/inter mode condition, quantization step size and a current zigzag scanning position, such that a plurality of variable-length coding tables having different patterns of a regular region and an escape region according to statistical characteristics of the ?run, level? data are set. One of the variable-length coding tables is selected according to mode, quantization step size and scanning position, and the orthogonal transform coefficients according to the selected variable-length coding table are variable-length coded.