Sony RDR-GX7 Technical Notes page 27

Post Video Equalizer
The image quality of DVD-Video software varies due to a
number of factors, including colour adjustment, local colour
preferences, the era it was originally created, preferences of the
authors, plus differences among equipment. Consequently,
recordable DVDs will also exhibit differences depending upon
the quality of the original source and the particular recorder used.
Thus, to achieve the best possible playback condition,
comprehensive picture adjustments may be required. For this
reason the RDR-GX7 is equipped with a video equalizer which
enables on-screen adjustment of parameters while the recording
is viewed, with control through a menu on the GUI display.
Accurate Chroma Up-sampling
It is said that the human eye is very sensitive to color, and for
DVD software this is of particular importance. Because of the
small size of the disc, data representing color must be
compressed to 1/4th of its original volume during the production
process before this data is recorded onto the disc. Then, during
playback, the original information is restored through a process
called chroma up-sampling. In the RDR-GX7, the appropriate
form of correction for both video material and for fill-in material
images is performed. Since different types of processing are
performed depending upon the type of image, color bleed as well
as lack of color are both dramatically reduced for superior,
natural looking images, even down to outline details. It all adds
up to a more enjoyable watching experience.
RDR-GX7 Technical Notes
Chapter 4-4
High quality
image & sound
27