At 9:53 AM -0800 12/16/06, Dale Kelly wrote:
If I recall correctly, my original posting suggested that the PAL countries superior picture quality was much more about these basic differences than it is about the use of the PAL color system. Example: in the U.S. system there is only about 3 MHz of space available for luminance video after insertion of the color picture subcarrier, while in Europe there is about 5 MHz available for video, which is *very* significant. To this, add the additional 100 scan lines per frame and there is simply no contest.
There is another difference between PAL and NTSC that makes a noticeable difference in picture quality. With PAL the color difference signals have equal bandwidth (about 1.5 MHz). With NTSC the I color difference signal is 1.5 MHz but the Q (primarily blue) is only 0.5 MHz. The result is that there is less color detail in blue and typically significant noise.
If you want to reduce this noise while watching an NTSC display, put on a pair of "blue blocker" sunglasses. You'll be amazed at how much better the picture looks.
Regards Craig ---------------------------------------------------------------------- You can UNSUBSCRIBE from the OpenDTV list in two ways:- Using the UNSUBSCRIBE command in your user configuration settings at FreeLists.org
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