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scart v's scart RGB?

Discussion in 'Cables & Switches' started by hughesy, Mar 29, 2005.

  1. hughesy

    hughesy
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    Hi,

    Can someone just clearup how rgb thru scart works, what the difference is and where these rate in the scale of quality cableing?

    1.dvi/hdmi
    2.component
    3.s-video
    4.RGB
    5.scart
    6.composite

    Cheers
     
  2. Ian J

    Ian J
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    An "RGB Scart" only has the minimum number of pins connected for passing an RGB signal so those pins that won't be used eg s-video and audio pins are left unconnected. In theory there is less chance of cross talk but IMO more depends on the quality of the screening rather than the actual number of pins connected.

    One can only give a general rule of thumb for video types and connection types as much depends on the implementation of each type of signal within the source and monitor but of the analogue signals component, RGB, s-video and composite are the descending order of merit. Scart isn't a type of video signal but a connection device and a scart can carry RGB, s-video or composite signals as well as audio.
     
  3. MarkE19

    MarkE19
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    Basically your list is in the correct order, going from best signal to worst.
    However DVI/HDMI are connection types, rather than signal types but are still the best as they are digital. Scart is also a connection type, but it carries all of the analogue connection types from your list, although not useally component.
    As you will be aware a scart plug has multiple pins. The different pins carry different video signals with separate pins for the signals in each direction. Therefore RGBs just uses 4 of the pins to carry the video signal. YUV component just uses the same RGB pins but without useing the sync on composite pin. A quick internet search should find the exact pin outs used for all the signals.

    Mark.
     
  4. AgentCool

    AgentCool
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    I disagree that the above list is in the correct order. RGB is unquestionably superior to s-video. My list of the most commonly used connections would be as follows:

    1. DVI/HDMI Digital connection (Component signal - Y, Cb, Cr)
    2. Component Analogue connection (Y, Pb, Pr)
    3. RGB SCART Analogue connection (R G B)
    4. S-Video Analogue connection
    6. Composite Analogue connection
     
  5. hughesy

    hughesy
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    i was aware of most of this, thanks guys.

    It was just that, i presume when you are using scart to scart on standard televisions you are basically doing the same as composite. And if you change your settings to accept RGB (sky for example) you are changing the format the signal is sent thru the scart and increases the quality.

    Does RGB break the signal into its seperate colours and send it that way (hence R for Red, G for Green and B for Blue?).

    If so you is component (sending the signal by lumanince and crominance [spelt wrong] ment to better)

    Connor
     
  6. eviljohn2

    eviljohn2
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    Component is only superior to RGB as it can also transmit a progressive scan signal. Otherwise the 2 will be very component dependent.

    DVD's store the image in "component" form whilst displays need an RGB image to display so it simply depends on where the conversion takes place. :)
     
  7. MarkE19

    MarkE19
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    As Ian J said, all the signal types can look good or bad depending on the equipment being used. Many have said that their equipment looks better connected via S-Video rather than RGBs. But in theory RGBs should be better than S-Video, but even then it is not always a great difference. I did however miss read the list and thought that RGB was above S-Video, so yes I do agree with you.

    Mark.
     

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