Section 7 – Video Input Menu
Copyright 2009-2016 Lumagen, Inc.
Radiance Pro, Rev 040116
16
Color Format
Inputs 1 through 8 are HDMI. By default the appropriate color space is automatically selected (i.e. “Auto”
mode) for standard-definition “Bt.601” or high-definition “Bt.709.” The “Auto” mode is generally best, but
some upscaling sources do not convert the color format to Bt.709 as they should and so “Bt.601” would be
manually selected for these if they are programmed to output HD formats. Bt.601 is used for SD/ED modes
and Bt.709 is used for HD modes. The command is:
MENU
→
Input
→
In Configs
→
[Resolution]
→
[#]
→
Picture
→
Color Format
Color Decoder
NOTE: Set the display’s Color and Hue to their default values.
Normally not used if the Color-Gamut is calibrated using the Radiance CMS system, unless the source has an
error in its color decoder. Use Radiance internal color-bar pattern, a test pattern generator, or a test disc
test pattern, to set color, Hue, color, and Hue offsets, if necessary. The command is:
MENU
→
Input
→
In Configs
→
[Resolution]
→
[#]
→
Picture
→
Color Decoder
Y/C Delay
Adjust the horizontal Chroma timing in relation to Luma. It is suggested that you use a Y/C-delay calibration
image from a test pattern generator of test disc to calibrate the Y/C-delay. The C
B
and C
R
channels are
adjusted independently. The command is:
MENU
→
Input
→
In Configs
→
[Resolution]
→
[#]
→
Picture
→
YC Delay
Input Sizing
Input sizing can be used to compensate for active image size differences between sources.
Note
:
The input size command does
not
affect the output size or position.
Rather, it affects which input pixels are captured for processing.
Use the
Crop TopLeft
command to select the top-left-most active input pixel. Use the
Crop BotRight
command to select the bottom-right-most active pixel. Select the scanline using the
and
arrows, and
the pixel using the
and
arrows. The command is:
MENU
→
Input
→
In Configs
→
[Resolution]
→
[#]
→
Size
→
[Aspect Ratio]
→
(Crop TopLeft,
Crop BotRight)
Vertical Shift
The vertical shift moves the image up and down without changing the
Input Sizing
settings. There are 15
vertical settings that are shared between all input memories. Select the vertical shift setting and then the
shift value. The command is:
MENU
→
Input
→
In Configs
→
[Resolution]
→
[#]
→
Size
→
[Aspect Ratio]
→
Vert Shift
Non-linear Stretch
Non-linear-stretch (NLS) is used to horizontally stretch a 4:3 aspect ratio source to fit a 16:9 aspect-ratio display or to
stretch a 16:9/1.85 source to fit a 2.35 aspect-ratio display. The image is stretched by a constant amount in the center
section, and by an increasing amount approaching the left and right edges. This eliminates the black sidebars normally
seen when viewing smaller aspect material on a higher aspect display. To use non-linear stretch press the “4:3”, “16:9”
or “1.85” button as appropriate and then press the “NLS” button.
The goal is to stretch the image to fill the screen in a way that looks as natural as possible. The Lumagen NLS
command is very flexible and allows the image to be adjusted to user preferences to achieve this goal. The NLS
adjustments are center width, center stretch, top cropping and bottom cropping. The center section of the image is
stretched by a constant ratio from 0% to 24%. The width of the center section can be set from 15% to 70% of the
display width. By programming the center section width and stretch amount, the amount of non-linear stretch in the left
and right sections can be optimized. In addition, the top and bottom cropping can be set from 0 to 12%. Increasing the
amount of cropping reduces the amount of stretch near the left and right edges of the image. When setting the cropping
parameters, it is recommended that the satellite/cable-box menu be checked to insure that critical information remains
visible.
Some 4:3 sources fill the entire source image (e.g. DVD 16:9 movies), but other sources place a 4:3 image in the center
of a 16:9 image (e.g. HDTV with up-scaled SD source). This latter case is seen as a “pillar-boxed” image with black
