GUIDE TO INSTALLATION AND OPERATION
32
| XVP-3901
Input: Pan
Once this smaller window is established, it can be moved horizontally (
Pan
, expressed in pixels) within the original
image to place the desired portion of the image in view. A
Center
check box beneath the Pan scroll box forces the
cropping window to be centered on the input window. When checked, the necessary Pan value will be calculated and
displayed in the data window. You cannot Pan if the cropping value is zero.
5.4.1.2 Output sub-section
Output: Side Panels
This scrollable data entry box is used to shrink the width of the image so that the output image has blanked areas on
each side of the displayed picture, which occupy the indicated percentage of the screen width. These areas are
symmetric about the center, so a setting of 25% side panels would show a bar 12.5% of the screen width on each
side of the image. 25% is the maximum value; entering a smaller value reduces the width of the side panels, but crops
the image top and bottom. This control is disabled when the input is 16:9.
Output: Anamorphism
This control box allows the output image to be resized asymmetrically. Anamorphism is expressed in percent, where
positive values indicate an increase in width with respect to height, and negative values a decrease in width with
respect to height.
Output: Position
This pulldown allows the positioning of the output picture when side panels are in use. The picture can be moved
totally to the left, centered or totally to the right. This control is not available in Auto AFD mode or Forced AFD mode.
The picture will be centered by default when an ARC Preset is selected.
Locking
controls
Represented by padlock icons, these buttons allow the
V Crop
,
H Crop,
Side Panels
and
Anamorphism
controls to be
“locked”. When a control is locked, user access to that control is disabled. Changes to unlocked controls will not affect
the data values of locked controls. There is some interactivity within the locking function, as follows:
•
If either
V Crop
or
H Crop
is locked,
Anamorphism
is unlocked.
•
If either
Side Panels
or
Anamorphism
is locked, the other is unlocked, along with
V Crop
and
H Crop
.
5.4.1.3 Presets sub-section
For convenience in manual operation, several of the most common conversion situations are pre-programmed into the
XVP-3901, and can be quickly accessed. The available Presets change according to the AFD mode and Output
Format selections made using the pulldowns on the input and output screens.
The chart in Figure 5.13 illustrates graphically the effect of each preset on the input image.
•
Only those presets for which an output is shown will appear on the Video Output panel.
•
For example, when the input and output formats are the same, only the
Bypass
button will appear
•
In all cases, a button labeled
Custom
will appear, and will be selected whenever the parameter settings do not
correspond exactly to one of the available presets
The advantage of using Presets is to provide a unique conversion without having to specify the H&V scaling factor or
the percentage of cropping/side panels and anamorphism. When an ARC Preset is selected, it re-centers the output
picture in case of side panels or letterbox, but it does not affect the output masks.