GUIDE TO INSTALLATION AND OPERATION
14
| XVP-801i
predicting the appearance of the output. The Preset ARC functions described below are configured to give
specific results for these input types, thereby permitting rapid setup.
Hint: if it is not clear whether any of these was used, or if another method was used, e.g. a small amount of
anamorphism coupled with some scaling to reduce the sidebars, then it is best to select
4:3 Pure
or
16:9 Pure
as the input, and look at a video monitor while adjusting the ARC controls.
The input screen also shows how much of the input signal will appear at the output after the ARC processing
in the XVP-801i. It does so by masking out unused parts of the screen with a black frame.
The Output Screen
The output screen shows the final result of the ARC processing. In effect, the uncropped portion of the input
screen is stretched to completely fill the 16:9 output screen.
A pull-down menu at the bottom of the screen allows the user to select some parameters of the output:
SD outputs: allows the output aspect ratio to be set to either
4:3
or
16:9
.
HD outputs: allows the output HD format to be selected.
The
ARC
tab
Under the
ARC
tab, several sub-sections are found allowing extended control over how the output will be
displayed; alternately, a set of presets is available when aspect ratio conversion is required.
Input sub-section
Input: Crop – Horizontal and Vertical
The crop controls allow to scale a smaller part of the original image – the amount of horizontal and vertical
cropping is expressed as a percentage of the size of the original image.
The user can manually adjust the level of horizontal and vertical cropping. Horizontal cropping is done on an
8-pixel basis. Vertical cropping is done on 4-line basis. To achieve non-symmetrical vertical or horizontal
cropping, unchecked the
Center
box underneath and position the image using the
Tilt
function described
below.
Input cropping changes the scaling factor between the input and the output. If we crop the input (H&V) by
10%, the output image is resized and scaled by +10%. By providing different H and V cropping, the user can
produce an anamorphic image. The actual maximum amount of cropping varies according to the input
original aspect ratio.
The padlock icon appearing next to the data window allows the data to be “locked”. See the paragraph
Locking controls
for a discussion of this option.
Input: Tilt
Once a smaller window has been established by cropping the input signal, it can be moved vertically (
Tilt
,
expressed in lines) within the original image to place the desired portion of the image in view. By default, a
Center
check box beneath the Tilt scroll box forces the cropping window to be centered on the input window.
When it is checked, the necessary Tilt value will be calculated and displayed in the Tilt data window. You
cannot tilt the input if the cropping value is zero.
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 it is checked, the necessary Pan
