Posted On: 07/03/2013 11:00:03 PM
Post# of 17650
Chess,
Nice find. There are three basic display sizes for ATSC. Basic and enhanced NTSC and PAL image sizes are at the bottom level at 480 or 576 lines. Medium-sized HDTV images have 720 scanlines and are 1280 pixels wide. The top tier has 1080 lines 1920 pixels wide. 1080-line video is actually encoded with 1920×1088 pixel frames, but the last eight lines are discarded prior to display. This is due to a restriction of the MPEG-2 video format, which requires the number of coded luma samples (i.e. pixels) to be divisible by 16.
You might see 1080P on the SMART TV @ 120 HZ. The last few lines are reserved for the Horozontal Sync Pulse at 6.8 to 8.4 micro seconds and the verticle retrace based upon amplitude all for the "Half Field" used for the Pixel Smoothing Algorythm.
Man this is fun for me. Point being that we are culminating the effort to data points to assist us all.
Regards
SUNNY:>
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