AJA Io4K - Manual (Page 25)

Io XT/4K v10.5r2 www.aja.com 25
Figure 21. Io 4K, Block Diagram set for UHD Format
Framebuffer: The framebuffer is the “memory” in Io XT/4K where your third-party applications
interface with the hardware. The framebuffer has a format (called the “Primary Format”
and color space that it follows, as defined in the linked menu screens or via external
application software. It is important to realize that the computer can contain many
applications that can use the Io XT/4K (as you switch from window to window) and it may
not always be obvious which currently controls it.
Figure 22. Control Panel In Use Message (in red)
In the top right corner, the Control Panel displays the name of the application controlling
the unit. In some cases, applications may not always properly “let go” of the I/O interface
as another takes over—you’ll be able to tell by looking at the Control Panel.
4 SDI Inputs
4 SDI Outputs
Ultra HD format
selected
configured for
UHD/4K
configured for
UHD/4K shown
inactive
HDMI Quadrant
selection icon