I don't think you have to worry about upscaling HD images to resolutions higher than 1280x1080 (1080i) or 1920x1080 (1080p) for a long time. Look at how long it took them to get that high. Am I the only one amused that a 52" television is now capable of 1920x1080, whereas my 19" CRT from 10 years ago could do 1600x1200?
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I don't think you have to worry about upscaling HD images to resolutions higher than 1280x1080 (1080i) or 1920x1080 (1080p) for a long time. Look at how long it took them to get that high. Am I the only one amused that a 52" television is now capable of 1920x1080, whereas my 19" CRT from 10 years ago could do 1600x1200?