The Proximal Workspace Architecture: A Latency- focused Approach to - - PowerPoint PPT Presentation

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The Proximal Workspace Architecture: A Latency- focused Approach to - - PowerPoint PPT Presentation

Aug 29, 2022 88 likes •309 views

The Proximal Workspace Architecture: A Latency- focused Approach to Supporting Context-Aware Applications Cynthia Taylor UC San Diego 1 Background and Motivation Small Devices Big Applications Thin Clients System

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The Proximal Workspace Architecture: A Latency- focused Approach to Supporting Context-Aware Applications

Cynthia Taylor UC San Diego

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  • Background and Motivation
  • Small Devices
  • Big Applications
  • Thin Clients
  • System Architecture
  • Adaptation of Google Earth
  • Next Steps

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Small Devices

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Zypad Wearable Netbook iPhone Nanotech Contact Lens Display (UW)

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Big Applications

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Virtual Worlds Maps Augmented Reality

  • Data/Computation Intensive, Context Dependent
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Google Earth 3D Ancient Rome

  • Interactively explore ancient Roman buildings

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Application Characteristics

  • Data Intensive
  • Computation Intensive
  • Sensor data
  • Frequent user-interaction
  • Poor native performance on client

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  • Background and Motivation
  • System Architecture
  • Terminals
  • World
  • Architecture
  • Adaptation of Applications
  • Completed Work
  • Next Steps

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Terminals

  • A collection of input/output devices and

sensors

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Work space world user’s server web server game server web server terminals PDA GPS video earpiece

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World

  • Various servers scattered over the internet.

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Work space world user’s server web server game server web server terminals PDA GPS video earpiece

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Architecture

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low latency high latency Work space world user’s server web server game server web server terminals PDA GPS video earpiece

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The Purpose of the Workspace

  • Mediates between world and client, adjusting for performance
  • Quick communication with the client
  • Dependence on physical location runs
  • Add additional functionality to programs
  • Create mash-ups between multiple programs

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Work space world user’s server web server game server web server terminals PDA GPS video earpiece

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  • Background and Motivation
  • System Architecture
  • Adaptation of Google Earth
  • Next Steps

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Data Model

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Google Earth: Unmodified

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client GE app display Google server

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Google Earth

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world workspace terminals GE app video glasses 3D navigator Google server netbook display forwarder sensor interpreter

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Next Steps

  • Focus on I/O issues

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I/O Devices

  • camera
  • microphone
  • mouse
  • accelerometer
  • GPS
  • temperature sensor
  • light sensor

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  • RFID
  • barcode reader
  • keyboard
  • biometric sensors
  • touch sensor
  • sound card
  • video card
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I/O

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device application device application

3 ms 1 ms

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I/O

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device application driver device application driver network ? ?

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functions

  • Caching
  • Polling
  • Buffering
  • Encrypting
  • Compressing
  • Synchronizing Multiple

Datastreams

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  • Transforming
  • Adding Timestamps
  • Averaging
  • Discarding Non-Recent

Updates

  • Predicting Future Updates