<s>
MPH	B-Device
(	O
Mobile-Pedestrian-Handheld	B-Device
)	O
was	O
a	O
mobile	O
extension	O
of	O
the	O
ATSC	B-Device
television	O
standard	O
jointly	O
developed	O
by	O
Harris	O
Corporation	O
,	O
LG	O
Electronics	O
,	O
Inc	O
.	O
and	O
its	O
U.S.	O
research	O
subsidiary	O
,	O
Zenith	O
Electronics	O
.	O
</s>
<s>
The	O
MPH	B-Device
platform	O
allowed	O
local	O
TV	O
stations	O
to	O
deliver	O
ATSC-compatible	O
content	O
to	O
mobile	O
and	O
video	O
devices	O
such	O
as	O
mobile	O
phones	O
,	O
portable	O
media	O
players	O
,	O
laptop	O
computers	O
,	O
personal	O
navigation	O
devices	O
and	O
automobile-based	O
"	O
infotainment	O
systems.	O
"	O
</s>
<s>
The	O
service	O
is	O
called	O
"	O
in-band	O
"	O
because	O
local	O
broadcasters	O
are	O
providing	O
mobile	O
TV	O
services	O
as	O
part	O
of	O
their	O
terrestrial	O
transmission	O
within	O
the	O
same	O
,	O
existing	O
6MHz	O
channel	O
they	O
use	O
for	O
their	O
ATSC	B-Device
DTV	B-Application
programming	O
.	O
</s>
<s>
With	O
the	O
installation	O
of	O
an	O
MPH	B-Device
exciter	O
and	O
signal	O
encoding	O
equipment	O
,	O
existing	O
TV	O
transmission	O
systems	O
would	O
have	O
transmitted	O
a	O
signal	O
which	O
could	O
be	O
received	O
on	O
"	O
MPH-ready	O
"	O
devices	O
.	O
</s>
<s>
The	O
system	O
allowed	O
the	O
splitting	O
of	O
the	O
6MHz	O
,	O
19.4	O
Mbit/s	O
of	O
spectrum	O
into	O
a	O
slice	O
for	O
a	O
traditional	O
DTV	B-Application
signal	O
and	O
a	O
slice	O
for	O
MPH	B-Device
use	O
,	O
serving	O
several	O
types	O
of	O
user	O
with	O
a	O
single	O
DTV	B-Application
channel	O
.	O
</s>
<s>
The	O
MPH	B-Device
system	O
is	O
a	O
multiple-stream	O
approach	O
,	O
with	O
the	O
main	O
service	O
stream	O
for	O
existing	O
DTV	B-Application
and	O
HDTV	B-Device
services	O
,	O
and	O
the	O
MPH	B-Device
stream	O
for	O
one	O
or	O
more	O
mobile	O
,	O
pedestrian	O
,	O
and/or	O
handheld	B-Application
services	O
.	O
</s>
<s>
Key	O
attributes	O
of	O
the	O
MPH	B-Device
system	O
were	O
:	O
</s>
<s>
The	O
MPH	B-Device
standard	O
was	O
later	O
combined	O
with	O
competing	O
mobile	O
ATSC	B-Device
proposals	O
,	O
to	O
become	O
ATSC-M/H	B-Device
,	O
which	O
remains	O
the	O
current	O
standard	O
.	O
</s>
