Specifying Temporal Behavior in Hypermedia Documents

We have designed and implemented a system for creating, editing, and displaying hypermedia documents.Thissystemusesanimproveddocument model with two major features. First, it allows authors to specify temporal synchronization constraints among events of interest within media segments.Second,itallowsasynchronousmaterial, such as user interaction, links, or programs, to be combined with richly coordinated synchronous material in a single hypermedia document. The systemincorporatesalinearprogrammingalgorithm to solve the temporal constraints. This process automaticallyconstructsaschedulefordisplayinga document and may involve stretching or shrinking media segments. Because synchronization constraintsrecordtheauthor'sintentionsandbecause the system creates schedules automatically, maintenance of documents throughout their life cycles should be easier. 1 Introduction Hypermedia systems allow authors to include information expressed in multiple media in their hypermediadocuments. Thisuseofm..