TV visual questions

By daystar
Aug 4, 2008
  1. Hi there i have several questions about my computer and tv that i dont know to much about.

    1 I have a 37" viewsonic lcd tv with hdmi capabilities. How do i connect my computer to tv with hdmi quality? I was using an s-video cable but the quality of the picture was poor. What cord do i need? and how do i do it?

    2. Also what is DVI?
  2. raybay

    raybay TS Evangelist Posts: 7,241   +10

    Hopefully you know the difference between digital and analog signal transmision. DVI is short for Digital Video Interface. DVI-I stands for "DVI-Integrated" and supports both digital and analog transfers, so it works with both digital and analog monitors. DVI-D" stands for DVI-Digital that supports digital transfers only.
    The DVI interface uses a digital protocol established throughout the industry. The desired illumination of pixels is transmitted as binary data. In native resolution, DVI will read each number and apply that brightness to the appropriate pixel. In this way, each pixel in the output buffer of the source device corresponds directly to one pixel in the display device. With Analog signals, the appearance of each pixel may be affected by its adjacent pixels, by electrical noise, and some other unpredictable forms of analog distortion.

    Previous standards such as the analog VGA were designed for Cathode Ray Tubes, or CRT-based devices. When the analog source transmits each horizontal line of the image, it varies its output voltage to represent the desired brightness. In a CRT screen, this is used to vary the intensity of the scanning beam as it moves across a screen.

    DVI cable connectors do not allow the user to connect the cable in an incorrect position or orientation. In the digital transfer one or two channels are present. Video and monitor cards which are exclusively digital cannot be connected to analog. They can, however be connected to equipment that can control both analog and digital signals.
  3. Darth_Terra1

    Darth_Terra1 TS Rookie Posts: 212

    1. If your Vid card has a DVI connector then all that is required is a DVI to HDMI cable, one end is DVI the other HDMI i'm sure you can work out which end goes where.

    2. Raybay has answered that question well so there isn't anything more to add.
  4. SNGX1275

    SNGX1275 TS Forces Special Posts: 10,742   +421

    Well there is one more thing to add. HDMI in a home theater setup carries audio too. But there won't be any when you run the DVI to HDMI cable, so you will still need to run from the line out of your sound card to whatever you want playing your sound.

    If you are in the US I recommend buying your DVI -> HDMI cable from monoprice. They are like the newegg for cables, but really low prices.
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