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A key difference between 1080i and 1080p is how the lines of resolution are displayed. Both offer 1920x1080 pixels, but the display method is different. In 1080p, the "p" stands for progressive scan. Each frame is drawn line by line, from top to bottom, creating a complete image in a single pass.
FHD (Full HD) is the resolution 1920 × 1080 used by the 1080p and 1080i HDTV video formats. It has a 16:9 aspect ratio and 2,073,600 total pixels, i.e. very close to 2 megapixels, and is exactly 50% larger than 720p HD (1280 × 720) in each dimension for a total of 2.25 times as many pixels.
This chart shows the most common display resolutions, with the color of each resolution type indicating the display ratio (e.g., red indicates a 4:3 ratio).
Now just like 720p vs 1080i, a signal can be transmitted in either format but still displayed differently on the HDTV. ... And also like a 1080p HDTV can really only display 1080p images ...
The HDMI or DVI input supports copy protection Yes Yes 720p HD (1280×720 progressive @50 & 60 Hz) Yes Yes 1080i HD (1920×1080 interlaced @50 & 60 Hz) Yes Yes 1080p HD (1920×1080 progressive @24, 50 & 60 Hz) No Yes Accepted video formats are reproduced without distortion No Yes Display 1080p and 1080i video without overscan (1:1 pixel mapping)
For a fixed bandwidth, interlace provides a video signal with twice the display refresh rate for a given line count (versus progressive scan video at a similar frame rate—for instance 1080i at 60 half-frames per second, vs. 1080p at 30 full frames per second). The higher refresh rate improves the appearance of an object in motion, because it ...