Matrox Corona Installation And Hardware Reference page 93

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Interlaced scanning
Describes a transfer of data in which the odd-numbered lines
of the source are written to the destination buffer first and
then the even-numbered lines (or vice-versa).
See also progressive scanning.
Keying
A display effect that switches between two display sources
depending on the pixel values in one of the sources. On
Matrox imaging boards that have both main and overlay
frame buffers, keying is usually used to make portions of the
overlay frame buffer transparent so that corresponding areas
of the main frame buffer can show through it.
Latency
The time from when an operation is started to when the final
result is produced.
Live processing
See real-time processing.
LUT mapping
Look-up table mapping. A point-to-point operation that uses
a table to define a replacement value for each possible pixel
value in an image.
LVDS
Low-Voltage Differential Signaling. It is a way to
communicate data using a very low voltage swing (about
350mV) over two differential printed circuit board (PCB)
traces or a balanced cable.
Main frame buffer
The buffer whose contents are displayed by the display
section of Matrox Corona. If keying is enabled, those areas of
the overlay frame buffer that have a specified color allow the
main frame buffer to show through.
Also known as image frame buffer or underlay frame buffer.