Knox Video VS-200 - Manual (Page 35)

K NOX V IDEO VS-200 O PERATION M ANUAL
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Image smoothing reduces the jagged-edges sometimes seen within an output image
by softening it. It typically improves the quality of a scaled image greatly. There are
four possible settings for this adjustment: “Off”, “Med.”, “High”, and “Auto”. The
“Auto” setting is generally thought to be most desirable and will vary the smoothing
process according to the amount of zoom taking place.
Occasionally, it’s necessary to cause the output image to be flipped Vertically,
Horizontally or both – most commonly when a video projector is ceiling-mounted, or
for special effects.
This Menu item fades the selected layer, and is only available on models with
overlay abilities. Adjustment range is from solid to fully transparent.
Note: This menu item only appears on multi-channel scalers:
This adjustment selects the order of the window layers. Layers are shown for ‘a’ and
‘b’ logo screens, Window ‘A’, Window ‘B’ and ‘Z’ is the Lock Source. The default
condition is shown. The number shown is the current layer of the active window,
when you adjust the layer number the layer stack indicator ‘abABZ’ will change to
allow visualization of the layer stack. Note that layer 6 the Background Color is not
shown as its layer position can not be altered – it will always be the background.
8.4.1 Extended scaling controls
The ‘Aspect adjust’ parameter is used to change the way that scaling of windows is
controlled. By default it is set to ‘Simple’ which allows basic control of the window
zoom and shrink sizes and positions – enough for simple tasks.
In ‘Advanced’ mode, it allows the horizontal (H) and vertical (V) components of the
Zoom and Shrink functions to be adjusted independently, thus allowing custom
aspect ratios to be created, or to convert from one aspect ratio to another.
In ‘Pixel’ mode, the user has direct access to pixel and line-accurate scaling
functions. This lets the user specify the exact co-ordinates and size of the source
image (within the video source), and the position and size of where this is placed in
the output video signal.
The table below summarises the different menu items in the different modes – the
‘Simple’ items have already been described earlier in this section, so only the
Adjust windows
Max fade level % [100]
Adjust Windows
Layer priority abABZ [ 3]
Adjust windows
Image flip
[Off]
Adjust windows
Image smoothing [Auto]