AJA KONA LHe Plus Installation & Operation Manual page 47

Framebuffer: The framebuffer is the "engine" in KONA where active video operations take place using
the third-party video application, or KONA itself. The framebuffer has a format (called the
"Primary Format" and color space that it follows, as defined in the Control Panel Screens
or via external application software "easy setups").
It is important to realize that inside the workstation computer, many applications can use
the KONA card (as you switch from window to window) and it may not always be obvious
which currently controls it.
The Control Panel displays the name of the application controlling the KONA card in the
upper right corner (see the figure below). In some cases, applications may not always
properly release the I/O interface as another takes over—you'll be able to tell by looking
at the Control Panel.
After studying the basics, read "Who is Controlling KONA?" on page 79 for more advanced
information on how applications interact with KONA.
Figure 40. Control Panel Screen Showing Application Currently Using KONA
Primary Format: The video format currently assigned to the KONA card. This is the format that the
framebuffer will use and is shown in the Control Panel using the color blue. All icons in
blue are the same as the Primary Format used by the framebuffer. Also any text
descriptions in the block diagram that appear in blue also indicate that something is in
the primary format. So if you see that the input and output icons are blue, then you know
that the same format is used throughout the video path and no format conversion is
being performed. If a different color is displayed on the input or output (green for
example) you know that KONA is performing a format conversion in the video path.
Secondary Format: Any format other than the currently selected Primary Format, is a secondary format. This
means that either the Inputs or Outputs are somehow different from the framebuffer's
assigned format—the "Primary Format. " The color change from blue makes this
immediately apparent.
Input/Output Icons: These icons are active color-coded triangles that show the status of all the KONA inputs
and outputs (selected, not selected, input presence, format, etc.). A complete video path
is shown when inputs and outputs are connected with lines going to/from the
framebuffer.
Figure 41. Input/Output Icon
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