Date: 2005Sep27 Q. What are the HDTV resolutions? A. Name Means (width x height) Aspect Ratio 1080p 1920 x 1080 progressive scan 16:9 1080i 1920 x 1080 interlaced 16:9 720p 1280 x 720 progressive scan 16:9 480p 852 x 480 - eg DVD 16:9 480i 720 x 480 - regular NTSC - SD (Standard Definition) 4:3 Some others... VGA 640x480 old computer resolution 4:3 QVGA 320x240 quarter of VGA. 4:3