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Multimedia Hardware

Multimedia Hardware. John Sullivan. Hardware. Vaughan’s One-way Rule “ Once you’ve tried it, you can’t go back ” (Vaughan, 2001) Sullivan’s Observation “ I have never meet a hard drive I haven’t filled ” (Sullivan, 1996). Platforms. Mac PC Linux . Connections.

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Multimedia Hardware

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  1. Multimedia Hardware John Sullivan

  2. Hardware Vaughan’s One-way Rule “Once you’ve tried it, you can’t go back” (Vaughan, 2001) Sullivan’s Observation “I have never meet a hard drive I haven’t filled” (Sullivan, 1996)

  3. Platforms • Mac • PC • Linux

  4. Connections • Networks – Wireless or Wired? • LANS • WANS • Servers • SCSI – • 80 Mbps • USB • USB 1.0 - 12 Mbps (supports 127 peripheral devices) 1996 • USB 2.0 – 480 Mbps (compatible with 1.1) 2000 • Firewire – 400 Mbps to 800 Mbps (IEEE 1394) guaranteed rate good for video and real-time data

  5. Communication • Modem – 56 Mbps • DSL – 32 Mbps upstream and 32 Kbps to 1 Mbps downstream -20,000 ft. • Cable – 2 Mbps • T1 - A dedicated phone connection supporting data rates of 1.544Mbits per second. A T-1 line actually consists of 24 individual channels, each of which supports 64Kbits per second. • T3 - A dedicated phone connection supporting data rates of 1.544Mbits per second. A T-1 line actually consists of 24 individual channels, each of which supports 64Kbits per second. • Coaxial – 10 Mbps • Fiber Optic - Gigabytes

  6. Memory and Storage • Central Processor • RAM vs ROM • Zip & Hard Drives • CD’s - Burners • DVD’s +, - • DVD Burners

  7. Memory Memory required to store a 5 by 7 inch snapshot with different precisions

  8. Input Devices • Multimedia Keyboards • Mice, Trackballs, Touch screens • Magnetic Card Encoders and Readers • Graphic Tablets • Scanners • OCR Devices • Infrared Remotes • Voice Recognition Systems • Digital Cameras

  9. Output Devices • Audio Devices • Amplifiers and Speakers • Monitors • Video Devices • Projectors • Luminance • Chrominance • Printers

  10. Multimedia Accessories • Video Overlay: allows a computer to display common video sources including video cameras, VCR’s and video disc simultaneously. • Multiple inputs, frame grab, TV tuner, Video for Windows, Memory conflicts, Video adapter compatibility • Check PC World • Digital Video • TV Tuner • MIDI - MIDI kit by Midisoft • www.rolandus.com laptops • www.midisoft.com • VideoDisc

  11. Multimedia Computer Buyer’s Checklists • Go to www.dell.com

  12. Virtual Reality Devices (VR) • Visual Output • Immersion Environments • Head Mounted Displays • Retinal Images – avoids use of screen • Aural Output • VR Input Devices • Position sensing (visible light, infrared light, ultrasound, etc) • Voice input

  13. Quality of Service (QoS) • ISO Standard • How “good” the offered networking services are • Elements • Parameters • Negotiation • Scheduling • Application parameters • Media quality • Media characteristics • End to end delay • Media Elements • Media conversion • Media synchronization • System Parameters

  14. Quality of Service • Network Parameters • Network load • Network performance • File transfer • Interactive image exchange • Video • Audio • With all the above • Delay • Accuracy • Throughput

  15. References Tannenbaum, R. (1998), Theoretical Foundations of Multimedia, New York: Computer Science Press Vaughan, T, (2001), Multimedia: Making it Work, New York: McGraw-Hill Webopedia, Accessed (September 23, 2003). Junitermedia. www.webopedia.com

  16. The End John Sullivan

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