21 What Television Broadcast Standards are compatible with BUDs?
Description
This article is from the TeleVision Receive Only Satellite-TV FAQ, by TVRO Hobbyists drlev@hotmail.com with numerous contributions by others.
21 What Television Broadcast Standards are compatible with BUDs?
All television distribution uses some set of technological standards
incorporated to allow specific types of reception. This is mainly
important in terms of the type of TV set you use and what part of the
world you are in. Satellite television, generally speaking, is
compatible with all standards of television broadcasting; the only
necessary information needed is whether or not a particular model/type
of receiver will work with your television set and what country a
satellite transmission is intended to be viewed in.
(This FAQ is not meant to be a comprehensive technical guide to how
television itself works. It is only meant to distinguish between
different technological standards so that they can be recognized and
differentiated as simply as possible.)
1. NTSC - NTSC, which stands for National Television System Committee,
was established in 1941 as the original standard for television
broadcasting. It primarily exists in North America and Japan. In the
simplest terms, NTSC has a 525-line screen image delivered at 60
half-frames per second. Your television (if you live in North America
or Japan) is probably an NTSC compliant television.
2. PAL and SECAM - These are standards that are not used in North
America. PAL, or Phase Alternating Line, is the standard for
television in most of Europe and, for that matter, is the most used
television standard in the world. Unlike NTSC, PAL has 625-line screen
image delivery delivered at 50 half-frames per second. The primary
difference between NTSC and PAL is that the phase of the color
components is reversed from line to line and the color difference
signals are of a different type. SECAM is a third standard used in
France, Russia, and a few other places in the world. Both PAL and
SECAM are considered to have superior horizontal resolution than NTSC.
NTSC, PAL, and SECAM refer to general low-definition television
viewing standards and do not address the issue of compression of
broadcast bandwidth.
Continue to:
My Books
