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Tablet PC - PowerPoint PPT Presentation


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Tablet PC . CSE 490 RA . Key features . Form factor Size Mobility Pen Input Natural Ink Stand Alone General Purpose . Tablet PC History . GRiDPad 1989 Go Pen point 1991 Pen Windows 1992 Newton 1993 Palm Pilot 1996 . Tablet PC Hardware Requirements . Digitizer

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tablet pc

Tablet PC

CSE 490 RA

key features
Key features
  • Form factor
    • Size
    • Mobility
  • Pen Input
    • Natural Ink
  • Stand Alone
  • General Purpose
tablet pc history
Tablet PC History
  • GRiDPad 1989
  • Go Pen point 1991
  • Pen Windows 1992
  • Newton 1993
  • Palm Pilot 1996
tablet pc hardware requirements
Tablet PC Hardware Requirements
  • Digitizer
    • Detect Hovering Pen
    • Sample at least 100 times per second
    • Support resolution of 600 dpi
  • Two second resume from standby
  • Landscape to portrait without reboot
  • Ctrl-alt-del without keyboard
why might pen computing succeed
Why might pen computing succeed?
  • Dramatic changes in hardware
    • Digitizers
    • CPU Speeds
    • Batteries
  • Digital Ink Recognition
    • This presentation was created without a keyboard on a turbulent airplane
  • Digital Ink treated as first class type
tpc software
TPC Software
  • Digital Ink Applications
  • Ink SDK
  • Tablet Input Panel
    • Computing without the keyboard
  • Extension of Windows XP
    • Must run windows apps
hardware landscape
Hardware landscape
  • Many vendors
  • Range of form factors
  • What about the keyboard?
  • Laptop plus vs. slate
    • Convertible
      • Acer, Toshiba
    • Detachable keyboard
      • HP/Compaq, motion computing
usability studies
Usability Studies
  • Pen UI vs. Conventional Widows UI
  • Ink as ink
    • User studies showed that often users do not convert to handwriting
  • Visual distinction for inkable regions
  • Input Modality
    • Do actions charge based on state
    • Many believe modeless UI’s are desirable
digitizer issues
Digitizer issues
  • Digitizer types
    • Resistive, single or double layer
    • Electro–static
    • Electro-magnetic
  • Digitizer distortion
  • Parallax
pen usability
Pen usability
  • Targeting
    • MS determined that .5cm is minimum
    • Many controls are smaller
    • Domains with much larger targeting range
      • Walking or talking
      • Bumpy airplane
  • Double click
  • Tap without drag
  • Hovering
pen types
Pen Types
  • Magnetic or Battery powered
  • May have button
  • Some active at both ends
    • Supports natural eraser metaphor
handedness
Handedness
  • Users hand blocks menu/cursor
  • Left vs. Right
  • Tablet PC controls take handedness into account
  • Control Panel /Tablet and Pen settings / settings
pen actions
Hover

Tap

Double Tap

Press and Hold

Hold through

Drag

Hold-Drag

Lasso

Gesture

Pen Actions
gestures
Gestures
  • Control actions associated with pen movements
  • InkCollector / InkOverlay provide gesture support
    • Recognized gestures fire event
  • Issues / risks
    • Hard to learn (as keyboard shortcuts)
    • Serious problem in accidental triggering