Confused - HD formats and transmissions...

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  • fkatzenb
    Junior Member
    • May 2006
    • 9

    Confused - HD formats and transmissions...

    I understand the typical resolution formats of 480i, 720p, 1080i, and 1080p. I also understand that 1080p is not common because not many displays support it. I believe some up convertors do support it... can't remember that manufacture AVR?

    Anyway, part of my confusion is component (RGB) and HDMI. I know what component is, and was under the impression that component transmission can support upto 1080p. So what is HDMI for?

    What about DVI? It seemed that it was going to be popular. What are its limitations and supported resolutions as stated above? I know that from a computer standpoint, I use DVI from my LCD panel and it seems to be better then the VGA cable setup on my secondary LCD. (I have the ATI Radeon X850? or something like that) Now more confusion was laden about a year ago (when I had my 9800pro) that a computers DVI is not compatable with the DVI seen on the back of the modern TV. Is this true? If so why and what's different in terms of what they support.

    So that leaves me to my next question. I am thinking about using my current computer to interface with my home theater system. I was going to use either the DVI or component output from the video card and plug right into the TV.... which is better? In addition, will it pump out a HD signal, or is that depended on the content I push thru the video card say a movie/dvd? Of course the audio is cake in comparison because that is just going to be connected thru the optical port on the back of my reciever.


    Sorry for the long post, but needed to figure it out.


    Frank
    Frank Katzenberger

    My Equipment:
    Yamaha RX-V757 Reciever
    Bose VCS-10 Center Channel
    JBL E60 Front & Rear Channels
    Dayton Titanic 15" Sub
  • JonMarsh
    Mad Max Moderator
    • Aug 2000
    • 15261

    #2
    Component is not RGB, it's YUV. Component is a format with three signals, a luminance signal and two color difference signals. RGB is the pure color signals as it sounds like, often accompanied by H and V sync lines, though in "olden" days sync might be multiplexed onto the green. RGB is the closest to what it takes to actually drive a display like a CRT, for example.

    DVI-D and HDMI are close cousins, but with a different connectors, for transmitting digital video. Digital video can be transmitted in both component and RGB formats. Both DVI and HDMI can have HDCP copy protection. HDMI adds the capability for digital transmission of audio. DVI can include DVI-I, which is translatable with a simple adatper to RGBHV (VGA in computer parlance).

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    • fkatzenb
      Junior Member
      • May 2006
      • 9

      #3
      Yeh I was slacking on the research because I wasnt in the mood.... here is a start after doing some searching....


      http://en.wikipedia.org/wiki/Digital_Visual_Interface (including D, I, A)

      If I understand properly....
      So the typical DVI typically only supports 1080i unless you have one that can transmit in a dual channel setup which will give you 1080p. However most TVs are not compatable because they only accept HDCP. If this is true, are their hacks?

      Looks like I am just going to use the RGB output cable from my computer to the TV since the TV only does 1080i and might not even have a a compatable DVI input.


      Frank
      Frank Katzenberger

      My Equipment:
      Yamaha RX-V757 Reciever
      Bose VCS-10 Center Channel
      JBL E60 Front & Rear Channels
      Dayton Titanic 15" Sub

      Comment

      • Brandon B
        Super Senior Member
        • Jun 2001
        • 2193

        #4
        Originally posted by JonMarsh
        Both DVI and HDMI can have HDCP copy protection.
        One nit, DVI can have it, but I believe HDMI MUST have HDCP. I think it is part of the spec.

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