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Digital
Broadcasting
Increase Your Media Exchange
Digital broadcasting is all
about size...and speed.
The
online world is expanding and it seems that everything is going
digital these days.
Television
sets, radio, pictures, text and even
written letters are going digital. It is hard to keep up with all the
new innovations.
But broadcasting digital is a concept you
can
wrap your arms around.
Broadcasting via digital medium means to
distribute video and audio signals to a large group of receptors using
digitized signals (as opposed to analog).
The
receptors can be anything from a mobile handset or radio set
to a internet
television set.
In technical terms we can say that a broadcasting a digital signal is
to convert information in digital bits. These
data bits are sent over a channel such as a satellite, fiber
optic cable or
wire to many receptors at the same time.
The main advantage of a digitized broadcast is its
user-friendly features and faster transfer rates.
Difference
between Digital and Analog
- An example of analog data is similar to sound
from an old
music transistor (AM/FM radio for instance).
- The equipments to transfer an analog
signal and a digital signal are different.
- In the digital form, large
numbers of small samples are made from the continuous waves of analog
signal.
- These samples are further converted into
digital bits. The bits
are similar to the computer bits of 0 and 1.
- When the video or audio is sent over the analog
channel, its
quality decreases over longer distances.
- In contrast, when the signal is converted
into digital its quality increases and does not get disrupted over long
distances. Signal reception also becomes better.
- When digital
broadcasting is applied on the TV sets, more number of channels can be
obtained.
- This means the bandwidth of the signals
increase with
digitization of the signal.
Digital
Broadcasting Process
- Equipment is needed to convert the audio and
video signal to the digital form at
the local receptor level.
- This digital signal then travels through
various media.
- The medium can be satellite or wire.
- A transmitter (repeated) will take the signal
and pass it along the way.
- The base station then broadcasts the signal to
various receptors at the same time.
- This is done by placing the signal on the
broadband. The TV acts as the receivers and receives this digital
signal.
Many a times the audio signal is
accompanied by video signal. The mixed and aligned signal is
then broadcasted
in the similar fashion.
The video digital broadcasting is done on the internet
by digitizing audio and video signal and uploading it to the
internet. Through the internet, it reaches to thousands of viewers and
listeners.
For
additional digital media
concepts such as the digital
broadcasting section here here, please check
out the
related
topics: digital video, streaming
digital media, veepers
and digital
voice recorder.
If
you are looking for a little more
hands-on
type information, take a peek at the streaming media player, media
streaming, video
webcasting, how
to stream video,
how to
stream audio and
video
streaming
information areas.
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