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Presentation system to large remote display screen

By jobeard
Jun 24, 2008
  1. related & similar but different from http://www.techspot.com/vb/topic87646.html

    goal: run presentations on PC and using dual monitors, display on large
    display screen ~ 20ft away in a conference room (w/o any systems in the room).
    intent is to use wireless VNC connection from laptop to control pc running the presentation.

    video screen will be at least 37" wide, have wide angle viewing.

    No gaming or HDTV required, only good graphics for Powerpoint presentations.

    Issues:
    1. cable distance to pc
    2. dvi vs hdmi
    3. resolution for viewing powerpoint

    Initial thoughts are to use an nVidia 9600 dual ported card and run it in 720p.

    What do you think?
     
  2. jobeard

    jobeard TS Ambassador Topic Starter Posts: 9,319   +618

    I found this DVI / HMDI switch to manage the long distance cabling.

    http://www.hdtvsupply.com/dviswsw6dvii.html

    Would solve the connectivity issues (computer DVI video vs large panel display using HMDI)
    and add signal boost / filtering and audio+video in the same cable :)
     
  3. jobeard

    jobeard TS Ambassador Topic Starter Posts: 9,319   +618

    Summary of Issues

    Summary of Issues for Flat Panel Display


    • Viewing distance
      A general rule for the TV viewing distance based on the SMPTE and visual acuity guidelines,
      is that the nearest TV viewing distance between you and your big screen TV should be
      limited to approximately twice the screen width
      (more precise 1.87 x screen width for a subtended angle of 30 degrees),
      while the furthest distance being no more than five times the width of your screen.
      Optimum viewing distance of a flat panel TV is approximately three times the height of the screen.
    • .
    • Viewing Angle
      Maximum vertical angle of view: In those home theater set-ups where this is not possible,
      the SMPTE guidelines suggest that the maximum vertical angle measured at the seated eye
      height from the front row center seat to the top most part of the projected image should not
      exceed 35 degrees.
    • .
    • Max View Distance:
      8 ft --> 37" wide
      10 ft --> 42" wide
    • .
    • Computer Connections
      HDMI --HDMI builds on DVI by adding multichannel digital audio to the digital video,
      so digital audio and video can be transmitted in one cable.
      DVI -- most prevalent connection to a computer.
    • .
    • Sound at viewing location (ie: Speakers may be optional)
    • .
    • Mounting
    • .
    • Cabling (both which ones and how to hide or make presentable)
      power
      is tv signal to be included?
      computer video
      (audio? within HMDI)
    • .
    • Computer Video Card capability
      HMDI is rare! DVI is the standard for computer-2-HDTV
      the computer output is DVI-D digital or DVI-I (digital only), not DVI-A analog
    • .
    • Computer Audio Card capability
      Needs Digital OUT if using HDMI
      (audio? digital audio toslink, s/pdif, XLR: M-Audio Audiophile 2496 w/S/pdif)
      audio: see http://www.zzounds.com/item--MDOAP2496
      optional A/V inputs (DVD, Stereo)
    • .
    • Mixer. Provides consolidation of inputs and signal boost/shaping for long
      distance cable between computer and the Presentation Screen
      Video Storm TMDS61 6 to 1 HDMI and DVI
      (run dvi+auto from computer to mixer, thence to remote flat panel using HMDI)
      http://www.video-storm.com/proddetail.asp?prod=TMDS61
     
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