<s>
Forward	B-Device
Versatile	I-Device
Disc	I-Device
(	O
FVD	O
)	O
is	O
an	O
offshoot	O
of	O
DVD	O
developed	O
in	O
Taiwan	O
jointly	O
by	O
the	O
Advanced	O
Optical	O
Storage	O
Research	O
Alliance	O
(	O
AOSRA	O
)	O
and	O
the	O
Industrial	O
Technology	O
Research	O
Institute	O
(	O
ITRI	O
)	O
as	O
a	O
less	O
expensive	O
alternative	O
for	O
high-definition	O
content	O
.	O
</s>
<s>
WMV9	B-Device
is	O
used	O
as	O
the	O
video	O
codec	O
allowing	O
for	O
135	O
minutes	O
of	O
720p	O
video	O
on	O
a	O
dual	O
layer	O
disc	O
,	O
and	O
135	O
minutes	O
of	O
1080i	O
video	O
on	O
a	O
three-layer	O
disc	O
.	O
</s>
<s>
FVD	O
uses	O
AACS	O
copy	O
protection	O
which	O
is	O
one	O
of	O
the	O
schemes	O
used	O
in	O
both	O
HD	B-Operating_System
DVD	I-Operating_System
and	O
Blu-ray	O
Discs	O
.	O
</s>
