Hi Friends ,
Since now people have started collecting HD video lets understand which is better for us . People tend to get swayed by numbers and thats the sad truth . Lets understand and see ourselves which one do we benifit from . I would try and put up some more info on different technologies in a multi part series posts .
This depicts how progressive (P) scanning works - see top row - versus how interlaced (I) scanning works - bottom row. People assume that 1080I is superior because the number is larger. The diagram above shows that this is a fallacy. In the progressive system, 720 lines are presented to the human eye every 1/60th of a second while the so-called 1080I system presents only 540 lines. Therefore a more accurate name for the interlaced system is 540I. It also more accurately represents the fact that the interlaced system is lower in quality than our 720P system. Not only is 720P superior to 540I in quality (note the well-known artifact: interlace flickers), but it is cheaper. And it is naturally compatible with computers (which all use progressive scanning).
It is possible to inflate the number to 1440P using the same logic as the interlaced camp (add together the two numbers from two successive 1/60th second intervals). But this is just not right. 720P system delivers 720 lines at each instant; theirs 540.
When comparing systems, be sure you are watching a true comparison. If you are not, then what you are really comparing is the equipment used for format conversion, not the display technology.
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content from Naming Proposal
Wikipedia - 720p
Since now people have started collecting HD video lets understand which is better for us . People tend to get swayed by numbers and thats the sad truth . Lets understand and see ourselves which one do we benifit from . I would try and put up some more info on different technologies in a multi part series posts .
720p VS 1080i
This depicts how progressive (P) scanning works - see top row - versus how interlaced (I) scanning works - bottom row. People assume that 1080I is superior because the number is larger. The diagram above shows that this is a fallacy. In the progressive system, 720 lines are presented to the human eye every 1/60th of a second while the so-called 1080I system presents only 540 lines. Therefore a more accurate name for the interlaced system is 540I. It also more accurately represents the fact that the interlaced system is lower in quality than our 720P system. Not only is 720P superior to 540I in quality (note the well-known artifact: interlace flickers), but it is cheaper. And it is naturally compatible with computers (which all use progressive scanning).
It is possible to inflate the number to 1440P using the same logic as the interlaced camp (add together the two numbers from two successive 1/60th second intervals). But this is just not right. 720P system delivers 720 lines at each instant; theirs 540.
When comparing systems, be sure you are watching a true comparison. If you are not, then what you are really comparing is the equipment used for format conversion, not the display technology.
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content from Naming Proposal
Wikipedia - 720p
