LG LSS-3200A Owners Manual - Page 11

2-2. TV Signal Formats Standard Comparison Table Signal Format Active Lines Sound Aspect Ratio Resolution Analog 480 Stereo (2 ch) 4 : 3 720 x 480 Digital SD/ED HD 480 Dolby Digital® (5.1 ch) MPEG Audio (2 ch) 4 : 3 or 16 : 9 640 x 480 704 x 480 720 or 1080 Dolby Digital (5.1 ch) 16 : 9 1280 x 720 1920 x 1080 The digital TV standards allow several different formats. Broadcasters can choose between four formats: • 480p - The picture is 704 x 480 pixels, sent at 60 complete frames per second (480i is also possible, sent at 60 interlaced frames per second). • 720p - The picture is 1280 x 720 pixels, sent at 60 complete frames per second. • 1080i - The picture is 1920 x 1080 pixels, sent at 60 interlaced frames per second (30 complete frames per second). (The "p" and "i" designations stand for "progressive" and "interlaced." In a progressive format, the full picture updates every sixtieth of a second. In an interlaced format, half of the picture updates every sixtieth of a second.) The 480i format is called SD. 480p format is called the ED format. 480i is roughly equivalent to a normal analog TV picture. The 720p and 1080i formats are called the HD formats. Some analog televisions can display a picture 720 pixels wide by 480 pixels high, that's a total of 345,600 pixels. HD digital signals can have a maximum resolution of 1920 x 1080, that's 2,073,600 pixels, or six times more pixels than the older resolution. Pictures will be crisper and cleaner, with more detail in every close-up and every panorama. 10