Introduction
Ordinarily PAL televisions will refresh the picture with a frequency of 50 Frames Per Second (FPS).The Frames Per Second (FPS) are the number of frames required to generate the illusion of motion. On a 50 FPS (50Hz) Cathode Ray Television (CRT), due to the picture being produced with an electron scan, there is a visible flicker that is seen by the human eye.
Our eyes are at times are sensitive to this frequency depending on the speed of the image, the level of darkness, and the level of brightness so you will sometimes notice the picture flicker on a 50Hz TV. Also the larger the screen is the more noticeable the flicker is.
Early 100 hertz technology
A 100 FPS (100Hz) television operates at twice the Frequency by creating a copy of each frame and putting it after the one before. As a result of doubling the scan frequency to 100Hz and inserting a duplicate frame this effect is eliminated, as far as the eye is concerned. The consequence of this is to drastically lower the flicker.
100hz on LCD and Plasma tv's
Plasma and LCD TVs dont have flickering as they dont generate the picture with an electron scan. But LCD TVs are still able to benefit from 100Hz since cpmplex digital circuitry creates a middle image or an extra frame. The TV does this by creating an further frame by means of complex interpolation along with motion compensation calculations to work out what the addition frames and fields look like instead of inserting a copy frame. Therfore the first and second frames are different.
A 100Hz picture still does not produce a completely smooth picture especially with fast motion images. Some television manufactures further reduce this by using digital picture processing. In reality there is still some blurring on fast moving images but the benefits are clearer and better-defined surfaces, sharper pictures, and smoother movement than you get from 50Hz LCD screens.
i.e. if a football moves ten pixels from right to left between frames one, two and three, the 100 Frames Per Second television will digitally create two added frames between one and two, along with two and three, in which the ball will travel five pixels. This therefore results in a total of five frames in which the ball moves a total of ten pixels i.e. the original frames one, two and three plus the digitally created frames that are inserted in between one and two, and between two and three. The eye thus sees a picture that moves more fluidly than before.
The benefits of 100 Hz
100Hz televisions have a clear benefit of eliminating the majority of ghosting effects now and then seen in LCD TVs. The ghosting effect caused by the next image being shown before the previous one has faded away. Plasma television also benefits from 100hz because the extra middle frame smoothes motion on the screen
Most leading manufactures have now got 100Hz LCD and Plasma televisions including Panasonic, JVC, Samsung, Toshiba, Sony, Philips, LG, Pioneer, and Hitachi.
200hz the next generation
Sony has just launched a 200Hz range which digitally inserts three additional frames between the original 50Hz frames. The effect of this is that fast moving sequences are delivered with a smoother, more fluid and sharper picture than 50Hz or even 100Hz TV's.
Reduced seizures for people who have photosensitive epilepsies
Research has proven that 100 hertz televisions can assist in preventing seizures in people who suffer with photosensitive epilepsies when viewing television or playing computer games. - 16492
Ordinarily PAL televisions will refresh the picture with a frequency of 50 Frames Per Second (FPS).The Frames Per Second (FPS) are the number of frames required to generate the illusion of motion. On a 50 FPS (50Hz) Cathode Ray Television (CRT), due to the picture being produced with an electron scan, there is a visible flicker that is seen by the human eye.
Our eyes are at times are sensitive to this frequency depending on the speed of the image, the level of darkness, and the level of brightness so you will sometimes notice the picture flicker on a 50Hz TV. Also the larger the screen is the more noticeable the flicker is.
Early 100 hertz technology
A 100 FPS (100Hz) television operates at twice the Frequency by creating a copy of each frame and putting it after the one before. As a result of doubling the scan frequency to 100Hz and inserting a duplicate frame this effect is eliminated, as far as the eye is concerned. The consequence of this is to drastically lower the flicker.
100hz on LCD and Plasma tv's
Plasma and LCD TVs dont have flickering as they dont generate the picture with an electron scan. But LCD TVs are still able to benefit from 100Hz since cpmplex digital circuitry creates a middle image or an extra frame. The TV does this by creating an further frame by means of complex interpolation along with motion compensation calculations to work out what the addition frames and fields look like instead of inserting a copy frame. Therfore the first and second frames are different.
A 100Hz picture still does not produce a completely smooth picture especially with fast motion images. Some television manufactures further reduce this by using digital picture processing. In reality there is still some blurring on fast moving images but the benefits are clearer and better-defined surfaces, sharper pictures, and smoother movement than you get from 50Hz LCD screens.
i.e. if a football moves ten pixels from right to left between frames one, two and three, the 100 Frames Per Second television will digitally create two added frames between one and two, along with two and three, in which the ball will travel five pixels. This therefore results in a total of five frames in which the ball moves a total of ten pixels i.e. the original frames one, two and three plus the digitally created frames that are inserted in between one and two, and between two and three. The eye thus sees a picture that moves more fluidly than before.
The benefits of 100 Hz
100Hz televisions have a clear benefit of eliminating the majority of ghosting effects now and then seen in LCD TVs. The ghosting effect caused by the next image being shown before the previous one has faded away. Plasma television also benefits from 100hz because the extra middle frame smoothes motion on the screen
Most leading manufactures have now got 100Hz LCD and Plasma televisions including Panasonic, JVC, Samsung, Toshiba, Sony, Philips, LG, Pioneer, and Hitachi.
200hz the next generation
Sony has just launched a 200Hz range which digitally inserts three additional frames between the original 50Hz frames. The effect of this is that fast moving sequences are delivered with a smoother, more fluid and sharper picture than 50Hz or even 100Hz TV's.
Reduced seizures for people who have photosensitive epilepsies
Research has proven that 100 hertz televisions can assist in preventing seizures in people who suffer with photosensitive epilepsies when viewing television or playing computer games. - 16492
About the Author:
Armadeus Cornelius is an authority on electrical products with just under 20 years of knowledge. For more information on the models offered go to lcd and plasma television with 100hz and 200hz. Go to the following link if you are interested in any electrical products at low prices.
