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15-413 Hardware/Software Allocation Li Qiu Augmented2 Reality Team STARS Project Carnegie Mellon University 11 November 1999 Current Environment • Pencil and Paper – mark on mini-blueprint – mark on body of aircraft • Paper Workorders • Paper Technical Manuals Development Platform • PEDD wearable computer • Java Virtual Machine • Lotus Notes Hardware/Software Utilization Subsystem Hardware Software Augmented Reality head mounted display, positioning system, orientation gyroscopes, joypad OEM drivers Authoring workstations SGML viewer (by ESI), OCR software, GCS , AIMSS v4.0 Inspection none none Repair earphones, microphone voice recognition software Modeling none Java3D package, CAD software Workflow dedicated base server, wired and wireless communication equipment Lotus Notes General System Performance • Expectations – quick response to user interactions – efficient subsystems • Example expectations – Augmented Reality - low overhead – Authoring - accuracy – Modeling - efficient algorithm Input/Output Performance • Response time to user interaction – user actions infrequent compared to automated tasks – no problems expected • Possible problems with data transfer rate – limited disk space on PEDD – IETM cannot be fully downloaded • 3D card preferred but not necessary Processor Allocation • Two most processor intensive operations – wireframe manipulation – speech recognition • Constrained by available PEDD – Pentium 233 MMX processor Memory Allocation • Current PEDD constraints – 64 meg • No accurate estimates of the memory requirements of each subsystem • Should clarify itself as object design proceeds Hardware Connectivity • The arrows indicate flow of information Network Architecture Source Device Target Device Transmission Transmission Media Protocol Authoring/Review processing computer database server 100baseT ethernet RMI database server PEDD wearable computer 10baseT ethernet, TCP/IP 10baseT wireless ethernet local hardware devices PEDD wearable (joypad, microphone, computer HMD, etc.) cable connection proprietary protocol Positioning/orientation PEDD wearable devices computer serial cable connection proprietary protocol