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Infrared Data Systems

Infrared Data Systems. Jeff Welch jpwelch@spectrixcorp.com www.spectrixcorp.com 220 Terrace Drive Mundelein, IL 60060 847.837.8650 Fax: 847.837.8670. Infrared Data Systems - Introduction. TV Remote Controls give incorrect image of IR

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Infrared Data Systems

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  1. Infrared Data Systems Jeff Welch jpwelch@spectrixcorp.com www.spectrixcorp.com 220 Terrace Drive Mundelein, IL 60060 847.837.8650 Fax: 847.837.8670

  2. Infrared Data Systems - Introduction • TV Remote Controls give incorrect image of IR • High profile IrDA limits view of IR as short distance Point-n-Shoot • Diffuse IR serves applications requiring: • greater distances than IrDA • multiple access, multi-point communications • less concern for line-of-sight and orientation of device

  3. Diffuse Infrared Applicability Aircraft Cabins Present an Ideal Environment for Diffuse-Light Communications

  4. What is Diffuse IR? • Classification of Infrared Transmitters • narrow beam: infrared laser • directed: narrow Field of View (FOV) -- like a flashlight • diffuse: wide FOV -- like an unshaded light bulb • Classification of Infrared Receivers • narrow Field of View (FOV) detectors using imaging optics • wide FOV: detectors using non-image optics

  5. What is the Spectrix System? • Wireless Diffuse Infrared network • Aviation-compliant under ARINC 763 (IEEE 802.11 interoperability) • IEEE 802.3 compatible • 4 Mbps bandwidth (10-16 Mbps in Y2000) • Secure and non-interfering communications • Supports up to 250 wireless nodes per LAN segment • 16,000 square feet coverage per LAN segment • Guaranteed service levels

  6. Spectrix Wireless Diffuse Infrared Network 8-16 Port Infrared Hub Infrared Antenna Base Station Network Interface Card & SpectrixLite Interface Card PEDs 250 per LAN Segment Ethernet Cabling Docking Portable PC on Ethernet LAN Fixed Workstation on Ethernet LAN 1,000 sq.ft. per Antenna

  7. Diffuse Infrared Network Cabin Implementation

  8. TCP /IP Today’s Spectrix Network Configuration SpectrixLite WindowsNT NIC Server Windows SpectrixLite Wireless 98/95/NT/3.x NDIS LAN Platforms Driver Adapter NetWare ODI Base Station NIC (IPX) Server SpectrixLite Network Manager Ethernet Antenna IR Hub Ethernet Filtering NIC Bridge Function TCP UNIX NIC Host /IP Wireless SpectrixLite LAN ODI DOS Platform Adapter Driver

  9. TCP /IP PC Card Dongle Next-Generation Spectrix System SpectrixLite WindowsNT NIC Server SpectrixLite Wireless Windows 2000/ NDIS LAN 98/95/NT/3.x Driver Adapter Platform NetWare ODI NIC (IPX) Server Ethernet SpectrixLite IR Hub Antenna Network Manager PC Card Dongle Windows TCP NIC Platform /IP TCP Wireless UNIX SpectrixLite NIC Host /IP LAN DOS Platform ODI Adapter Driver

  10. Diffuse IR Applications • Commercial Aviation (Cabin LAN “C-LAN”) • Secured Military Installations • Offices • Financial Trading Floors • Classrooms • Hospitals

  11. Diffuse IR Compared to FastIR • Diffuse IRFastIR • Transmitter FOV: Diffuse (120º) Directed (30º) • Receiver FOV: Wide (120º) Narrow (30º) • Communications: Multi-point 1-to-1 • Link Range 16.5 m 1 m

  12. Diffuse IR compared to Radio Frequency • Diffuse IRRF • Data Rate: 4-16 Mbps 2 Mbps • RF Interference: Not Applicable Inclined • Security: Contained Hackable • Regulation: Open/Publicly Crowded/License • Available Required • Health-Safety Concerns: No Maybe • Location Reporting: Yes No

  13. Diffuse IR LAN Designs • IEEE 802.3 - Cabled Ethernet LANs • MAC Protocol: CSMA/CD • (Carrier Sense, Multiple Access/Collision Detection) • IEEE 802.11 - Wireless LANs • MAC protocol: CSMA/CA • (Carrier Sense, Multiple Access/Collision Avoidance) • Roaming • Hidden Nodes • IR Modulation: 16-PPM (1Mbps) and 4-PPM (2 Mbps) • 10 meters • Spectrix • MAC Protocol: TDMA • (Time Division, Multiple Access with Deterministic Reservation & Polling) • IR Modulation: RTZBI (4-16 Mbps) • Roaming • Supports large number of nodes (250/LAN segment) • 16.5 meters

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