APPARATUS AND METHOD OF HIERARACHICAL MODULATION FOR SCALABLE VIDEO BIT STREAM

摘要

An apparatus and a method for transmitting and receiving hierarchical modulation of scalable video bit stream are provided to solve a problem that a video compression standard H.264 used in the existing terrestrial DMB(Digital Multimedia Broadcasting) does not provide a scalability function that provides various screen resolutions/time resolutions/picture qualities, failing to provide a one-source multi-use service. An HP(High Priority) channel generating unit(812) generates an HP bit stream having an HP based on a base layer among a plurality of scalable layers included in a single scalable video bit stream. An LP(Low Priority) channel generating unit(813) generates an LP bit stream having an LP based on an enhancement layer among the scalable layers included in the single scalable video bit stream. A splitter(810). A splitter header parcing unit(812) parses an NAL(Network Layer Access) header included in an NAL unit of the received scalable video bit stream and discriminates the received scalable video bit stream as the base layer and the enhancement layer.