Table of Contents
Advertisement
16:9 Aspect Ratio
4:3 Aspect Ratio
Aspect
Ratio
Aspect ratio is simply the width and height of the pi('turc.
Rc:gular
TVs Hse
a 4:3
aspe('t ratio, which means the pic'turc: is a little widc:r than it is tall (a screen that
is 20 inches wide is about 15 inches tall).
When
the standards
were
being
developed
for television
broadcasting
in 1941
by the NTSC (the National
Television
Standards
Committee),
it made
sense
to
adopt
the 4:3 aspect
ratio the film industry
was using
at that time.
As TVs dropped
in price and people prospered
in the 1950s, the movie industry
had to tint] a way to get people out of their living rooms and back to the movie
theatres. That's when they created the 16:9 aspect ratio (also called widescreen
format). When the standards for HDTV were being developed
by the ATSC (Ad-
vanced %.qevision Standards Committee),
the 16:9 aspect ratio was chosen as the
format for HDTV.
This widescreen
format makes sense because it's much closer to the way wc
see. Our field of vision is actually much wider than tall because of our periph-
eral vision. Not only is it closer to the way we see, but the pictures
are crisper
and cleaner with more detail in the close-up
anti panoramic
views.
Digital
Signal and Sound
Th(._ analog television
broad('ast system that has been used in the United States
for the past 50 years transmits signals as electronic
waves. These waves can
suffer degradation
as the signal travels to your home. Additionall 5 the analog
waves are susceptible
to interference
from planes passing overhead,
weather,
and household
appliances.
1)igital signals, in contrast to analog signals, can be reproduced
precisely
be-
cause the images are transmitted
and received using the computer
language
of
ls and 0s. Such precision yields a signal with amazing picture clarity and out-
standing sound quality.
Other
Key Features of owning
an RCA HDTV
The:re: arc othc:r HDTVs on the: market. But yoHr RCA HDTV
has
been
dc:signc:d
with features that will enhance
your TV viewing experience,
and features
that provide flexibility to build on the digital revolution that is taking place. A
summary
of your TV's most unique features follows. Go to Chapter 3 for more
details on these and additional f_:atures.
(?(mtitzztes otz *zextpage...
3
Advertisement
Table of Contents
