Ubiquitous Computing


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These slides were used to walk through Mark Weiser's seminal paper on Ubiquitous Computing:

The Computer for the 21st Century.

Published in: Technology

Ubiquitous Computing

  1. 1. 1 Ubiquitous Computing Honey, could you pick up a 6-pack of computers on the way home?
  2. 2. 2 The Computer for the 21st Century Mark Weiser - Presentation by Kevin Regan
  3. 3. 3 Some Principles The purpose of a computer is to help you do something else The best computer is a quiet invisible servant Technology should remain calm
  4. 4. 4 Calm Technology Can computing technology be as easy to use as literacy technology? Difficulty does not stem from UI problems The idea of the personal computer is the problem
  5. 5. 5 The Super Laptop Ubiquitous computing does not mean: Computers you can bring to the beach Analogy to writing One very important book or Being able to write anywhere to anyone
  6. 6. 6 Virtual Reality & Embodied Virtuality Virtual Reality Immerses us in simulated world Ubiquitous Computing Invisibly enhances real world
  7. 7. 7 Motor Analogy As Motors grew smaller and more powerful, they disappeared Nanoscale Engine Watt Rotary Engine
  8. 8. 8 Parc-Tab Tabs - Size of pack of cards Personalized and carried with you Pads - Size of piece of paper Scrap computers, antidote to “windows” Boards - Yard Sized Large displays for groups of people
  9. 9. 9 Groundwork - Displays Portable displays will have 1000x800 resolution centimeter thick weight 100 grams Rollable Display 240 x 360 resolution Larger displays will have 100 microns thick Viewing density of computer screen VisWall - 96 inch 12000 x 6100 resolution ~ 75 million pixels Tens of millions of pixels
  10. 10. 10 Groundwork - Computation CPU speed may level off at 1 Mhz We now have > Ghz processors Separate processors for display GPU’s with hundreds of Mb of memory Matchbook hard disk with 60 Mb capacity iPod with 60 Gb Toshiba 0.85 hard disk with 4 Gb
  11. 11. 11 Groundwork - Software Software needs to take advantage of the network Micro Kernel Operating Systems Highly modular collection of OS neutral abstractions Different OSes can be hosted on the micro kernel Current operating systems do not allow apps to move MobiDesk, VMWare, VNC & Citrix come closer
  12. 12. 12 Groundwork - Networks Cellular rates of 250 kbps Transparent Linking of wired and unwired networks Single protocol to bridge short-range wifi, long-range wifi and high speed wired networks (MSocks, E2E Mobility) Must cope with users who move Need for better wireless medium
  13. 13. 13 Scenario at home Sal looks out her windows at their neighbourhood. Sunlight and a fence are visible through one, but through the others she sees electronic trails that have been kept for her of neighbours coming and going during the early morning. Transparent, cheap large display Location sensing of people Network to communicate location information Privacy Policies
  14. 14. 14 Scenario at home On the way to work Sal glances in the foreview mirror to check the traffic. She spots a slow down ahead and also notices on a side street the telltale green in the foreview of a food shop and a new one at that. She decides to take the next exit and get a cup of coffee while avoiding the traffic jam. Experience should be as unintrusive as looking in rearview mirror Providing location dependent information
  15. 15. 15 Scenario at work ... Virtual office sharing can take many forms-in this case the two have given each other access to their location detectors and to each other’s screen contents and location. Sal chooses to keep miniature verions of all Joe’s tabs and pads in view ... Sharing of work area assists with collaboration Location sensing is opt-in
  16. 16. 16 Discussion Ubiquitous Computing will Bring people closer together Make obtaining information trivial Be like a pleasant walk in the woods
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