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Closed Captions
KLRU offers a variety of programs with closed captions for
deaf or hearing-impaired viewers. . Besides serving hearing
impaired viewers, programs with closed captions are also used
to teach literacy.
What are closed captions?
Closed captions on television are text located somewhere
on the picture. Since there is no way for a television to
put text outside the area of the picture tube, captions cover
a portion of the picture.
These closed captions are hidden in the video signal, invisible
without a special decoder. The place they are hidden is called
line 21 of the vertical blanking interval (VBI). There are
also open captions -- captions that have been decoded -- but
they are an integral part of the television picture, like
subtitles in a movie.
How can I see closed captions on my television?
There are two ways you can view closed captions on your television
set
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Set up an external decoder. This is
necessary if your television doesn't have an encoder already
built in (The Television Decoder Circuitry Act of 1990 mandates
that since July 1993, all televisions manufactured for sale
in the U.S. must contain a built-in caption decoder if the
picture tube is 13" or larger.)
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Use a television with an internal decoder built
into it. It shouldn't make a difference how you
receive KLRU, whether it's through broadcast, cable or satellite,
you should still be able to receive closed captions.
More Information
KLRU-TV
p.o. box 7158 // austin, texas // 78713-7158
main 512.471.4811 // fax 512.475-9090
email info@klru.org
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