9. Technology

Question 1

What are the different Output possibilities and their basic functions?

Answer 1

Visual: Update rate, Spatial resolution, Dimensions, Color presentation (3D, Printing)
Audio: Frequency range, Sample resolution, Spatial resolution (Music, Earcons, …)
Haptic: Temporal/spatial resolution, point of reception, type of haptic sensation (force feedback input device)
Smal & Taste: Olfactory Icons, Ambient Notification
Activating: Possessed Hand

Question 2

Name some options to create 3D.

Answer 2

• Glasses with separated display for each eye
• A screen/projector and electro optical shutter
  -Linear polarization filter and passive spectacles
• Auto-stereoscopic
  Volumetric 3D Display

Question 3

What are the different Input possibilities and their basic functions?

Answer 3

Haptic: Button/Keyboard, Touchscreen, …
Speech: Commands, Directions, …
Vision: Eye Tracking
Affective Computing: Brain Computer Interface

Question 4

What is the taxonomy for input technologies according to Buxton?

Answer 4

1. Continuous vs discrete?
2. Agent of control (hand, foot, …)?
3. What is being sensed (position, motion or pressure)?
4. The number of dimensions being sensed?

Question 5

What are the different types of controllers?

Answer 5

Isometric: Device that senses force but doesn’t perceptibly move
Isotonic: Displacement device, free moving
Elastic: Device’s resistive force increases with displacement
Viscous: Resistance increases with velocity of movement
Transfer function: Position control, Rate control