VLC & VLD SYSTEM

摘要

The method of variable-length-coding digital data involves scanning block data according to various scanning patterns. The scanned data is coded to [run-level symbols according to the various patterns. The symbols are variable length coded. Various lengths of data are separately accumulated according to the various patterns. A scanning pattern corresponding to a minimum length value is selected. The data which was coded according to the selected scanning pattern is selected as transmission data. A series of processes for variable length coding are separately performed for all block data. The method improves transmission efficiency and compression efficiency, and optimises scanning pattern.