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Jerky picture after upgrade to Samsung 40"
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<blockquote data-quote="ziphnor" data-source="post: 57409" data-attributes="member: 14215"><p>There is intentional overscan on many TV's, both LCD, CRT and plasma. The overscan can be obtained in two ways:</p><p></p><p>One is to have a physical overscan, ie you hide some pixels on the edges of the display. In this case you *will* get overscan running 1:1 pixelmapping with the TVs native resolution, and you should use powerstrip or nvidias utility to design a resolution -in-resolution if you want to avoid the overscan(no need to avoid overscan if MP is the sole use of HTPC).</p><p></p><p>The second is overscan by zooming. That is, upon recieving a signal the TV will scale it larger than its physical resolution and then crop it. In this case overscan is a bad thing, because you feed the TV a signal in its native resolution, and it then proceeds to scale it up causing scaling artifacts.</p><p></p><p>If you want to ensure you are getting 1:1 pixelmapping(more important than overscan IMHO) try out this test: </p><p><a href="http://archive.avsforum.com/avs-vb/showthread.php?s=&threadid=90884" target="_blank">http://archive.avsforum.com/avs-vb/showthread.php?s=&threadid=90884</a></p><p>(you need to rotate it 90 degrees to test for vertical scaling artifacts).</p><p></p><p>As to the mention that the HDMI/DVI isnt for PC's, that can mean alot of things. On my HDTV, all inputs except VGA are treated with some kind of sharpening filter(even though sharpness is set to 0), which has a nasty effect on the desktop, but looks fine in movies and the MP interface.</p></blockquote><p></p>
[QUOTE="ziphnor, post: 57409, member: 14215"] There is intentional overscan on many TV's, both LCD, CRT and plasma. The overscan can be obtained in two ways: One is to have a physical overscan, ie you hide some pixels on the edges of the display. In this case you *will* get overscan running 1:1 pixelmapping with the TVs native resolution, and you should use powerstrip or nvidias utility to design a resolution -in-resolution if you want to avoid the overscan(no need to avoid overscan if MP is the sole use of HTPC). The second is overscan by zooming. That is, upon recieving a signal the TV will scale it larger than its physical resolution and then crop it. In this case overscan is a bad thing, because you feed the TV a signal in its native resolution, and it then proceeds to scale it up causing scaling artifacts. If you want to ensure you are getting 1:1 pixelmapping(more important than overscan IMHO) try out this test: [url]http://archive.avsforum.com/avs-vb/showthread.php?s=&threadid=90884[/url] (you need to rotate it 90 degrees to test for vertical scaling artifacts). As to the mention that the HDMI/DVI isnt for PC's, that can mean alot of things. On my HDTV, all inputs except VGA are treated with some kind of sharpening filter(even though sharpness is set to 0), which has a nasty effect on the desktop, but looks fine in movies and the MP interface. [/QUOTE]
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