Intel D15343-003 Switch User Manual


 
Intel
®
82854 Graphics Memory Controller Hub (GMCH)
136 D15343-003
6.4.7.5 Color Control
Color control provides a method of changing the color characteristics of the pixel data. It is applied
to the data while in YUV format and uses input parameters such as brightness, saturation, hue (tint)
and contrast. This feature is supplied for the overlay only and works in YUV formats only.
6.4.7.6 Dynamic Bob and Weave
Interlaced data that originates from a video camera creates two fields that are temporally offset by
1/60 of a second. There are several schemes to de-interlace the video stream: line replication,
vertical filtering, field merging, and vertical temporal filtering. Field merging takes lines from the
previous field and inserts them into the current field to construct the frame - this is known as
weaving. This is the best solution for images with little motion; however, showing a frame that
consists of the two fields will have serration or feathering of moving edges when there is motion in
the scene. Vertical filtering or "Bob" interpolates adjacent lines rather replicating the nearest
neighbor. This is the best solution for images with motion however, it will have reduced spatial
resolution in areas that have no motion and introduce jaggies. In absence of any other de-
interlacing, these form the baseline and are supported by the GMCH.