Object-based audio-visual terminal and corresponding bitstream structure

摘要

Information processed at an object-based video or audio-visual terminal includes objects received in an object oriented bitstream, in which some objects are accompanied by an expiration time stamp (ETS) which specifies the notion of object persistence in which an object, after it is presented, is saved at a decoder until a time given by the expiration time stamp. Such an object can be used multiple times before the expiration stamp runs out. A persistent object with an expired expiration time stamp is no longer available at the decoder, however until the expiration time stamp expires, the object is available for re-use. A persistence indicator (PI) indicates whether an object is persistent or not.