Multimedia hardware
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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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Multimedia hardware

Multimedia Hardware

John Sullivan


Hardware

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

Platforms

  • Mac

  • PC

  • Linux


Connections

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


Communication

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


Memory and storage

Memory and Storage

  • Central Processor

    • RAM vs ROM

    • Zip & Hard Drives

    • CD’s - Burners

    • DVD’s +, -

    • DVD Burners


Memory

Memory

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


Input devices

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


Output devices

Output Devices

  • Audio Devices

  • Amplifiers and Speakers

  • Monitors

  • Video Devices

  • Projectors

    • Luminance

    • Chrominance

  • Printers


Multimedia accessories

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


Multimedia computer buyer s checklists

Multimedia Computer Buyer’s Checklists

  • Go to www.dell.com


Virtual reality devices vr

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


Quality of service qos

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


Quality of service

Quality of Service

  • Network Parameters

    • Network load

    • Network performance

  • File transfer

  • Interactive image exchange

  • Video

  • Audio

  • With all the above

    • Delay

    • Accuracy

    • Throughput


References

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


The end

The End

John Sullivan


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