What is the significance of 1080 HD?
The term “HD” refers to the number of image lines that make up the picture on your TV screen. Standard definition (regular TV) is made up of 480 lines, showing only half of them at a time. The flashing lines are “interlaced” the way your fingers would be when your hands are folded. An image qualifies as “High-Def” when it is made up of at least 720 lines of image rather than only 480. This may be classified as “720i”, where the “i” stands for interlaced like the example above, or it may be “720p”, where the “p” stands for progressive – meaning that all 720 lines are shown at the same time, rather than half at a time. Unlike old CRT TVs, though, new digital TVs will accept an interlaced signal (like 720i) and de-interlace it so that all 720 lines are displayed at the same time. The i and the p really refer to what type of signal the TV can accept, rather than how it will display the image. The highest defenition that is available right now is 1080 lines. Just like 720, this can be inter
