Equus VI DIS - HD Radio (TM) Information; Licensing Information; Availibilty Information; What Is HD Radio TM Technology

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FM and AM mode
HD Radio (TM) information
Licensing information
HD Radio
TM
Technology Manufactured
Under License From iBiquity Digital
Corporation. U.S. and Foreign Patents. HD
Radio
TM
and the HD Radio logo are
proprietary trademarks of iBiquity Digital
Corporation.
Availibilty information
HD Radio
TM
reception is available in the
United States, including Alaska and
Hawaii.
What is HD Radio
TM
technology?
The Driver Information System is able to
receive standard analog FM/AM radio
broadcasting as well as digital HD Radio
TM
FM/AM broadcasting.
HD Radio
TM
technology provides digital
and analog reception using existing FM
and AM broadcasting frequencies.
Currently, radio stations broadcasting an
HD Radio
TM
signal are operating in a hybrid
mode of both, analog and digital, in order to
reach both receivers. In both modes,
analog and digital, the broadcasted
program content is the same (except
multicasting, see below).
Eventually, as analog receivers are
replaced by digital ones, radio stations may
be able to turn off their analog broadcasting
and use only the digital one.
Multicasting
HD Radio
TM
FM stations are able to
broadcast multiple digital program streams
(channels) over a single FM frequency. For
example, a HD Radio
TM
FM station can run
a main channel of music and a sub channel
of news (or even two different music
channels) at one frequency.
But only the program content of the main
channel is also broadcasted analog.
HD Radio
TM
signal delay
To overcome the delay that digital systems
inherently produce, HD Radio
TM
technology first uses the audio signal of the
analog broadcasting when you tune to an
AM station or to the main channel of a FM
station. After that, the system will blend
from analog to digital signal.
Normally, this blending is very smooth. If
you experience a skip in program content of
several seconds, the radio station has not
implemented HD Radio
TM
broadcasting
correctly. This is not a problem with your
Driver Information System.
Due to the fact that sub channels are only
broadcasted digital, blending from analog
to digital signal is not possible if you tune to
a sub channel. In this case playback of the
sub channel starts after several seconds,
this is a normal function.