Samsung's HDTV technology continues to advance with the rest of the HDTV industry, with top-range quality but middle-range price. The latest sets, like the Samsung LN-46C750, have 240Hz frame rates and can display 3D images. But, how does a 3D HDTV work, and is it even worth looking at?
To understand how a 3D HDTV works, let's start by looking at that 240Hz frame rate feature. You may remember from school that a Hertz (or 'Hz') indicates one cycle per second, of anything. When we're talking about an HDTV picture, Hz indicates the number of images that can be shown on the screen each second.
A few years ago, every HDTV operated with a frame rate of 60Hz. This worked well, and gave a nice smooth picture for most viewing- in fact most HDTV sets today still operate at 60Hz. But, some content, for example a DVD movie, has a 24Hz frame rate. Trying to display a 24Hz movie on a 60Hz HDTV can make the image seem to jump or stutter when fast action is displayed. Thus, 120Hz HDTVs were created to fix this.
Samsung LN-46C750 HDTV - Are You Ready For 3D?But it doesn't end there- now that Samsung and others are building 3D HDTV sets, they need to boost the frame rate again. This is because the new 3D technology works by sending images alternately to one eye and then the other (through their special shutter glasses) so that each eye sees a slightly different sequence of pictures. This means that each eye will have to skip every other frame and see half as many images per second. Doubling the rate to 240Hz solves this problem while maintaining the smoothness of a 120Hz picture.
So far, the 46-inch LN-46C750 is one of the few sets in the Samsung LCD HDTV series that offer 3D capability and a 240Hz frame rate, but hopefully, there are many more to come.
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- ROUTEUR SANS FIL
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