Sony DVS-7200, Руководство по эксплуатации продукта

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Glossary DVS-7200 • Product Guide
Border
In switcher terminology, a thickened edging, similar to a picture frame, placed
around a key signal, a digital effect, or the edges of a wipe pattern. Typically, the
thickness, softness, and color of the border are completely adjustable.
Bus
A means by which one input can be selected from among several different inputs.
The output of the bus is then sent to a specific destination, either internal or
external to the switcher. A minimum of two buses are required to perform a simple
mix, wipe, or key operation.
CCIR-601
CCIR Recommendation 601, “Encoding Parameters of Digital Television for
Studios,” is a recommendation adopted in 1986 by the CCIR (Comite Consulatif
International des Radio-communications) which concerned digital component video
systems in the 525 and 625 line standards. The document specifies sampling rates
for digital video.
Chroma Key
A type of key where the hole-cutting information is derived from a color rather than
from a video level. A common example of chroma key is when the weathercaster
appears to be standing in front of a map. The map is an electronic signal, and the
weathercaster is in fact standing in front of a solid blue or green screen. The
Chroma Key process electronically subtracts the color from the foreground image,
and replaces it with video from the background image to form a composite image.
Cleanup
A list management tool that cleans up problems in the EDL, including overlaps and
gaps. Cleanup is used to streamline the auto-assembly and re-edit process for
maximum efficiency, guaranteeing that the numeric EDL matches the visual
program as recorded on tape.
Clip
Also know as a “segment” or “scene.” Describes a continuous length of source
footage, long or short, the duration of which is defined by an inpoint (head frame)
and an outpoint (tail frame).
Crosspoint
The video switch which selects the source required on a particular switcher bus.
Depth Key
A DVS-7200 option that permits keys in the third dimension, using the “Z” axis or
depth axis in XYZ coordinate space. Depth information can be derived from a full-
screen video source, a key source, the main mask, a subsidiary mask, or by using
“Z-data” from the DME-3000 or DME-7000. The feature allows you to perform
visually complex keys without the need for complex masks, timelines, and repeated
priority switching.