What do interlace (1080i) and progressive (720p) mean?
The “i” stands for interlaced and “p” stands for progressive. 1080i and 720p represent two different methods used to display HDTV video on a screen. When video is interlaced, a single video frame only draws every other line. If you numbered each horizontal line in a 1080i frame from 1 (as the top line) to 1080 (as the bottom line), each successive video frame alternates between drawing the odd-numbered lines and the even-numbered lines. So, a display supporting a 1080i format may draw all of the odd-numbered lines (totaling 540 lines) in one frame, and then draw the 540 even-numbered lines in the next frame. This format is used by CBS and NBC. A display supporting 720 progressive format will sequentially draw all 720 lines in each frame. You will notice a difference in picture depending on whether the program is being shown using the progressive or interlaced method. ABC and FOX use this format. 4:3 is considered Traditional TV aspect ratio.
The “i” stands for interlaced and “p” stands for progressive. 1080i and 720p represent two different methods used to display HDTV video on a screen.When video is interlaced, a single video frame only draws every other line. If you numbered each horizontal line in a 1080i frame from 1 (as the top line) to 1080 (as the bottom line), each successive video frame alternates between drawing the odd-numbered lines and the even-numbered lines. So, a display supporting a 1080i format may draw all of the odd-numbered lines (totaling 540 lines) in one frame, then draw the 540 even-numbered lines in the next frame. This format is used by HD9 HD7 HD10 HD SBS HD ABC.A display supporting 720 progressive format will sequentially draw all 720 lines in each frame. You will notice a difference in picture depending on whether the program is being shown using the progressive or interlaced method HD9 HD7 HD10 HD SBS HD ABC also use this format. All Reality LCD series models are able to display a 480p signal
