HDTV Reviews and Digest
Question by Mexicano95: What’s te diference between 1080i and 1080p. And what does that mean?
I’m trying to buy a plasma tv and also why are MHz ? Plz help
Best answer:
Answer by Craiger
the “i” is a worse version of HD, (meaning it’s not TRUE HD). the i means “interlaced lines”. ‘p’ is better, and stands for “progressively scanned lines”.
Basically, in a tv you have vertical columns of pixels.
The ‘i’ version, does odds for a frame, then evens for a frame, then odds for a frame, etc…
The progessive scan, ‘p’, televisions will do all the lines for every frame, which makes for a much clearer/smoother picture.
MHz are mega-hurtz ( = 1,000,000 hurtz). This is the number of times per second a frame is shown on the TV. The higher the MHz, the faster the re-fresh rate – smoother picture.
Don’t get confused is a re-fresh rate is in ‘ms’. Those are milliseconds, and a smaller number in this case is better.
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i is the better form of HDTV, interlace means the screen is refreshed at twice the frame rate, which give more realistic motion at 30 fps. NBC, PBS and CBS use 1080i. Fox and ABC use 720p, but they boost the frame rate to 60 fps so it actually improves HD sports coverage.
the 1080p comes from game machines. because it takes too much computer horsepower to double the refresh rate, it is easier for cartoon images to be drawn at 30 fps progressive. However marketing people have turned this defect into a “feature” so now there is a lot of demand for 1080p displays. if you are a gamer, you might want the progressive “feature”.