SRC Technical Note 1997-027a
SRC Technical Note 1997-027aThis paper presents a simple and intuitive hypermedia synchronization model -- the Media Relation Graph (MRG), and an alternative implementation of the Hypermedia Presentation and Authoring System (HPAS), which is the testbed for MRG. HPAS is a system for presenting, integrating, and managing time-based hypermedia documents on the Web. The underlying temporal model of HPAS combines the power of both interval-based and point-based synchronization mechanisms. The new Java-based implementation exploits many rich features of commercial Web browsers and reuses existing browser components, such as plugins and Java applets. (An overview of HPAS and its original Unix/C implementation can be found elsewhere \cite{src-tn-1997-003}.)