Lecture 7

Hyperapplication Systems

• DEC LinkWorks
  • Every application designed for this has a link menu.
  • Applications export a link interface for other applications.
  • Links have a visible indication.
  • Following a link will automatically launch an application if needed.
• OMG's DOMF
  • Object Management Group's distributed object management facility
  • object-oriented scheme for applications to export functionality and data
  • applications can acess available services in a network-transparent manner
• OpenDoc (and Bento)

• QuickTime
• Athena Muse
• Gibbs' Objects, Environments and Frameworks
• IMA

• Temporal Coordination
• Backer's movie repair manual
• Reference objects and mapping functions

• Devices
• Abstractions

• X
• Architectures
• Server coupling
• Synchronization and scheduling
• Client control
  • Stream processing
    • strand = sequence of continuously recorded video frames (audio samples)
      
    • stream = sequence recovered for correct-order playback
  • Synchronization of multiple streams

• April 1994 CACM
• Interactive Learning with a Digital Library in CS: project description, web page

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