July 10, 2010
Why 100Hz Or 200 Hz Should Be Considered When Buying An LCD Or Plasma TV
How 100Hz originally worked
An ordinary PAL TV will refresh the picture 50 times per second or at a grade of 50Hz. The Frames Per Second (FPS) are the amount of frames necessary to form the phantasm of moving. Our eyes are frequently responsive of this grade concerning the swiftness of the figure, the intensity of darkness, as well as the intensity of brightness. As a result, you will occasionally see the picture flicker on a 50Hz TV. In addition the larger the screen is, the more visible the flicker is.
At 100 FPS (100Hz), TV works at twice the Frames Per Second by making a duplicate of every frame and including subsequent to the earlier one. On a 50 FPS (50Hz) Cathode Ray Television (CRT), since the picture is formed by an aroused particle scan, there is an obvious flicker that could be viewed by the human eye. As a result of having twice the scan range to 100FPS and including a copy frame, this trouble is not seeming as distant as the human eye is concerned. The effect of this is to significantly lower down the flicker.
The benefit of 100Hz on Plasma and LCD TV’s
Plasma and LCD TVs don’t have glistening because they don’t create the picture with an electron scan. Yet LCD as well as Plasma TVs still get from 100 Hertz because advanced digital circuitry creates an extra frame or middle figure. The TV does this by producing an extra frame by means of complicated interpolation, plus moving compensation estimations to estimate what the extra fields and frames look like, as a replacement of including a second frame. (e.g. the first and second frames are different).
Yet, even at 100Hz the picture still does not give a completely smooth image especially with swift moving figures. Numerous TV producers try to decrease this further through digital picture processing. Generally, there is still a little blurring on quick moving figures even if the advantages are clearer and more wonderful surfaces, blander motion, as well as sharper pictures than is probable from 50 Frames Per Second LCD TVs and Plasma TVs.
For example, if a football moves ten pixels from left to right involving frames one, two and three, the 100Hz TV will digitally formulate two further frames between one and two, as well as two and three, in which the ball will move five pixels. The outcome of this is five frames in which the football moves a sum of ten pixels i.e. the first frames one, two and three as well as the digitally formed frames inserted between one and two, as well as in the middle of two and three. The impression of this is that the eye notices an figure that moves fluently than earlier.
The benefit is that 100Hz TVs have a great benefit of ending nearly all of the dimming appearances now and then seen in LCD TVs. The dimming product caused by the next figure being displayed before the first one has faded away.
Lots of top manufacturers have got 100Hz Plasma and LCD TVs including JVC, Panasonic, Toshiba, Samsung, LG, Sony, Philips, Hitachi and Pioneer.
Further advantages with 200Hz
A breadth of 200 hertz TVs have been created by Sony which digitally places three additional frames in the middle of the first 50Hz frames. Therefore, fast moving parts are presented with a smoother, more flowing and sharper picture than 50Hz or even 100 hertz TVs.
Benefits for masses who have photosensitive epilepsy
Studies have exposed that 100Hz TVs could help individuals who experience photosensitive epilepsies when viewing TV or playing computer games.
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