AJA KONA 3G Installation And Operation Manual page 53

KONA 3G Installation and Operation Guide — Control Panel Operation
Crossconversion: if you have an HD format as your primary and then select a secondary HD
format with a different frame size, the KONA 3G will perform a crossconversion where
necessary (input or output) for "like Hz" formats. "Like Hz" means that 720P 59.94 may be
converted to 1080i 29.97 (59.94Hz). Converting from disparate Hz is not supported on the
KONA 3G for crossconversions. The example below shows 1080i to 720p.
Up (Conversion)—the Up and Down pull-down menus are available when conversion has been
selected for the video path to/from the framebuffer and like Hz formats are selected (the
one exception is 1080PsF 23.98 which can be downconverted to 525i 29.97.) Different
choices will be available depending on the type of conversion and formats being
converted. SD to SD conversions are essentially aspect ratio conversions to accommodate
transforming anamorphic images to letterbox or vice versa.
For Upconversion the following choices are available:
Anamorphic: full-screen "stretched" image
Pillar box 4:3: results in a 4:3 image in center of screen with black sidebars
Zoom 14:9: results in a 4:3 image zoomed slightly to fill a 14:9 image
with black sidebars
Zoom Letterbox: results in image zoomed to fill full screen
Zoom Wide: results in a combination of zoom and horizontal stretch to fill
a 16:9 screen; this setting can introduce a small aspect ratio change
Down (Conversion)—for downconversion the following choices are available:
Letterbox: image is reduced with black top and bottom added to image area with the
aspect ratio preserved
Crop: image is cropped to fit new screen size
Anamorphic: full-screen "stretched" image
SD to SD—this pulldown is for SD to SD aspect ratio conversion.
Letterbox: this transforms SD anamorphic material to a letterboxed image.
H Crop: will produce a horizontally stretched effect on the image; transforms anamorphic SD to
full frame SD
Pillarbox: will produce an image in the center of the screen with black borders on the left and
right sides and an anamorphized image in the center
V Crop: will transform SD letterbox material to an anamorphic image
AJA Control Panel, Formats, Example shows cross-conversion
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