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afterdawn.com > forums > high definition video > hdtv displays (tvs and projectors) > about progressive scanning
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About progressive scanning
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spike1
Newbie
_ 		25. July 2004 @ 18:21 _ Link to this message    Send private message to this user   
Am I right to assume that a film or HDTV immage (maybe even a comp monitor) duplicates whole frames for a more flicker free image? I.E Frame 1 is identical to frame 2, then the next new frame is frame 3? Thus a 50fps signal is actually 50Hz?
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vurbal
Staff Member

1 product review
_ 		26. July 2004 @ 06:57 _ Link to this message    Send private message to this user   
I'm not sure I understand the question. You seem to be asking if a 50fps source needs to have frames duplicated to play at 50fps, so I assume I'm not understanding what you mean.
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spike1
Newbie
_ 		26. July 2004 @ 14:54 _ Link to this message    Send private message to this user   
I'm asking if 60Hz prog scan signal is 60 FULL NEW FRAMES or just 30 NEW FRAMES and 30 duplicated.
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Oriphus
AfterDawn Addict
_ 		15. August 2004 @ 15:45 _ Link to this message    Send private message to this user   
With interlaced it can scan one frame at 1/60th second skipping all the even numbers, then one frame at 1/60th second to scan all the even numbers, skipping the odd. Ths meaning it took 1/30th second to scan a frame. Progressive scans that frame at 1/60th second. Hence the increase in picture quality
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