Frequently Asked Questions

Hi Definition

Hi Definition

A standard TV has an aspect ratio of 4:3. That means the picture is 4 units wide for every three units of height.


What is 16:9 Aspect Ratio?
Also known as the "widescreen" format. The new HDTV standard is 16:9, which is 16 units of width for every 9 units of height. So HDTV's 16:9 is a rectangle that is, relatively speaking, horizontally wider than regular TV, which by comparison looks almost square. The phrase describes the shape of a TV set or program, not an actual inch measurement.


What is 3:2 Pulldown?
3:2 Pulldown is the most common method of converting 24 frame per second (fps) motion picture material (film) to NTSC and other 60 field per second (fps) video. The basic idea is: One film frame is scanned three times, the next frame is scanned twice, the next frame is scanned three times, the next frame is scanned twice, and so on.


What is 1080i?
One of the resolution specs used in the HDTV. 1080i stands for resolution of 1920x1080 pixels and the magic little 'i' means that the video is being interlaced.


What is 1080p?
One of the resolution specs used in the HDTV. 1080p stands for resolution of 1920x1080 pixels and the magic little 'p' means that the video is in progressive format.


What is 720i?
One of the resolution specs used in the HDTV. 720i stands for resolution of 1280x720 pixels and the magic little 'i' means that the video is in interlaced format


What is 720p?
One of the resolution specs used in the HDTV. 720p stands for resolution of 1280x720 pixels and the magic little 'p' means that the video is in progressive format


What is interlaced scan?
An interlaced system alternates every sixtieth of a second between showing the odd and even horizontal scan lines. First it will show the odd lines, and then one sixtieth of a second later it will show the even lines, so every thirtieth of a second a complete image is created, giving a true speed of 30 frames per second.


What is progressive scan?
A progressive scan system displays the entire image once every sixtieth of a second. The true framerate is therefore 60 frames per second.