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Samsung ALiS or not to ALiS

Discussion in 'Plasma TVs' started by RustyH, Aug 28, 2004.

  1. RustyH

    RustyH
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    Hi guys, just after some quick info, in the samsung range, I have heard people mention that alis panels are bad, WHY????

    Cause Ive seen two screen in the samsung range I like, the Samsung
    PS37S4AX 37 Inch ALiS Panel Plasma with High Definition Screen, or the samsung PS42V4SX 42 Inch Plasma with High Definition Screen. These are the same price yet different size screen, am I missing a catch out with one of the screens???

    Also, what does the high definition mean??

    Thanks
    Russ
     
  2. pjclark1

    pjclark1
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    these are ED screens HD has more pixels than these (1024x???? I think for HD)
     
  3. RustyH

    RustyH
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    what do you mean ED??

    Which ones are ED screens??

    thanks for your help mate
    Russ
     
  4. pjclark1

    pjclark1
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    normal TV screens 720x480i (ntsc) 720x576i (pal)
    Extended Definition screen (ED) 852x480p
    High Definition screen (HD) 1024x720 (or higher)

    hope I got that right!
    so loads of the problems with plasma tv is trying to make a 576 dot wide picture fit on a 480 dot wide screen. The plasma has to scale the original picture to fit on the plasma screen, and sometimes the processing doesn't do a very good job and you get a nasty picture. So you can buy external "scalers" to try and do a better job than the plasma can do itself.
     
  5. RustyH

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    is it sometimes better to go for normal plasmas then, is it oftern a uncreased cost and alot of messing about to make a good picture on ED or HD???

    What is the built in scalers like on the samsungs ED and HD, do you know
     
  6. AV Junky

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    The 852 is not the 'dot high' figure (vertical resolution). Is in fact the 'dot wide' figure, to continue you terminology (horizontal resolution).

    For a screen to be true HD. it needs to have a vertical resolution ('dot high') of at least 720 pixels. This matches the current minimum resolution of HDTV signals which is 720p.

    SD panels have a vertical resolution of 480 pixels. This is perfect for the 480i NTSC picture system used in eg the States and Japan, but some downscaling is required for our PAL system (which runs at 576i). A future HDTV service in the UK would require downscaling of either 720p or 1080i into the 480(p) on these plasmas. Most current plasmas can do this, with good results in many cases.

    BTW, the term ED (enhanced definition) is used in States on there HDTV service to signify programmes transmitted at 480p (NTSC progressive), rather than the usual 480i (interlaced).

    HTH
     
  7. hornydragon

    hornydragon
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    Alis 1024x1024 panels do offer improve horizontal res but vertical res is more like 512 as only half of the vertical pixels are "light" at anyone time.
     
  8. RustyH

    RustyH
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    how do you mean Hornydragon???

    Is it better to go for the standard pixel 852(H) x 480(V) of the PS42V4SX plasma or the 1024(H) x 1024 (V) of the PS37S4AX plasma??

    Do you have to buy more equipment to sort out the picture sizing??

    Thanks, and sorry for the questions
    Russ
     
  9. pjclark1

    pjclark1
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    you only have to buy more equipment for the picture sizing if you don't like what your plasma does.
    The samsung PS42V4SX , NEC 42VP4 and Panny PW6 should all be fine. I wouldn't touch the Hitachi 1024 x 1024 alis panel with a barge pole, not cos of alis, but it buzzes like crazy on some of them. And if you get a buzzing one, you have to fight like hell to get it changed.
     
  10. RustyH

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    so is it worth loosing a 5 inches (37") for the same price as the 42" samsung, but have the extra resolution, or have the extra inches and the lower resolution??
    Is there alot of difference in PQ
     
  11. hornydragon

    hornydragon
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    depends on viewing distance really RustyH
     

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