Glossary
WSS
Wide Screen Switching: Data used in wide-screen analogue
services, which enables a receiver to select the appropriate picture
display mode.
WST
World System Teletext: System B Teletext. Used in 625 line / 50 Hz
television systems
(ITU-R 653).
XLR
Audio connector featuring three leads, two for signal and one for
GND.
XML
eXtensible Markup Language. A very common self-describing text-
based data format. Used for many purposes: Meta-data,
configuration files, documents, etc. The readability of the format has
made it very popular and is now the fundament for many types of
WEB services.
XPO
The name given to the second generation Ericsson standard for web
pages and additional supporting interfaces.
Y (Luminance)
Defines the brightness of a particular point on a TV line. The only
signal required for black and white pictures.
Y/C
Broadcast video with separate color, Y (luminance) and C (Chroma)
(sometimes called S-Video).
YUV
Y: Luminance component (Brightness), U and V: Chrominance
(Color difference)
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