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Image Enhancement Techniques For LCD Devices

Image Enhancement Techniques For LCD Devices

Techniken zur Bildverbesserung bei LCD-Geräten
Image enhancement techniques for LCD devices

Some well-known problems with LCD sets include motion blur, low contrast, and pixel noise.
Techniques from LCD TV manufacturers are supposed to remedy these problems. HiFi-Online now presents these to you:

DynaPix

This technology, as well as DynaPix-HD, comes from JVC and is supposed to improve particularly bright or dark image sections as well as increase the saturation to a small extent. This is achieved by dynamic black level and gamma correction, which is based on the analysis of histograms (for 50 frames per second).
grams (for 50 frames per second). This makes the details more visible (but only if the image source is also of high quality).


DynaPix

Clear LCD

The control technology from Philips is called Clear LCD. Two techniques are combined: “Overdrive” (acceleration of the response time to 3 ms) and “Scanning Backlight“ response time to 3ms) and “scanning backlight“ (the fluorescent tubes of the backlight flash briefly instead of shining permanently, and a deeper black tone is also achieved). The shortcoming of this technology: So far, it only works with PAL pictures.
Other LCD manufacturers also use this technology under the name “Flashing Backlight”.

Active Vision M100

Toshiba also blows the whistle with its technology to combat motion blur. This method calculates and adds intermediate frames from the incoming PAL pictures. This doubles the refresh rate from 50 Hz to 100 Hz and appear much sharper and smoother to the human eye. Again, a shortcoming: Active Vision M100 does not yet work with HDTV images..

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