1. 11 November 1999Sticky Technology for Augmented Reality Systems 1 2 15-413 Robert Kurian Inspection Team STARS Project Carnegie Mellon University 11 November 1999 Software Control

2. 11 November 1999Sticky Technology for Augmented Reality Systems 2 Topics of Software Control External Flow Control Concurrent Control Internal Control User Interface

3. 11 November 1999Sticky Technology for Augmented Reality Systems 3 External Flow Control Threads –Handle, dispatch user interaction events –Speech recognition for wearable –Document fetching on user nodes (Workflow subsystem) –Thread per connection on server nodes (Workflow subsystem)

4. 11 November 1999Sticky Technology for Augmented Reality Systems 4 External Flow Control User interaction –Authoring subsystem –Inspection subsystem –Repair subsystem Workflow subsystem – timers

5. 11 November 1999Sticky Technology for Augmented Reality Systems 5 Concurrent Control Varying concurrency issues –Workflow subsystem access Maintenance personnel Technical manual writers –Write access restricted Quality control experts Main issues like concurrent access of the same document will not be allowed

6. 11 November 1999Sticky Technology for Augmented Reality Systems 6 Internal Control Workflow subsystem –Procedure driven control –Server side One task, one thread Task completes, value sent, thread terminates or is added to pool of threads Augmented Reality subsystem –Event handling

7. 11 November 1999Sticky Technology for Augmented Reality Systems 7 Internal Control Repair subsystem –Only one thread –Speech input is passed by this thread Inspection subsystem –Procedure driven control –Threads outside of subsystem depend on input from Inspection subsystem Authoring subsystem –Procedure driven control

8. 11 November 1999Sticky Technology for Augmented Reality Systems 8 Internal Control Modeling subsystem –One main thread –Catches events as passed from AR subsystem, stores them to be processed –Processing done by another thread

9. 11 November 1999Sticky Technology for Augmented Reality Systems 9 User Interface Authoring –Necessary authoring tools –Conversion of paper tech manuals to IETMs Augmented Reality –User interface manager Input: Window to display Output: Events

10. 11 November 1999Sticky Technology for Augmented Reality Systems 10 User Interface Inspection –Interface for workorder generation –Requires location information for sticky Repair –Speech recognition –Speech synthesis

11. 11 November 1999Sticky Technology for Augmented Reality Systems 11 User Interface Modeling –Display wireframe model with stickies –Navigation through change of location and orientation of viewer Location and orientation from positioning devices View update notification caused by user movement or sticky addition