Matrox 4Sight User Manual page 197

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Host
In general, Host refers to the principal CPU in one's
computer. It can also refer to the principal computer in a
multi-computer set-up.
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.
Internet Protocol (IP) address
The electronic address of a computer (station) on a TCP/IP
network, which is unique for every client and server station.
Client workstations have either a permanent or dynamically
assigned address. The IP address is a dot address that is
written as four sets of numbers separated by periods, also
called dotted quad notation (for example, 203.142.62.2). The
TCP/IP packet uses 32 bits to hold the IP address.
Keying
A display effect that switches between two display sources
depending on the pixel values in one of the sources. Keying
is used to make portions of the overlay frame buffer surface
transparent so that corresponding areas of the underlay
frame buffer surface 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.