<s>
Total	B-Device
Hi	I-Device
Def	I-Device
Disc	I-Device
,	O
also	O
called	O
Total	B-Device
HD	I-Device
or	O
THD	O
,	O
was	O
a	O
planned	O
optical	B-Device
disc	I-Device
format	O
that	O
included	O
both	O
of	O
the	O
rival	O
high-definition	O
optical	B-Device
disc	I-Device
formats	O
,	O
Blu-ray	O
Disc	O
and	O
HD	B-Operating_System
DVD	I-Operating_System
.	O
</s>
<s>
One	O
side	O
was	O
to	O
contain	O
a	O
single	O
or	O
dual-layer	O
Blu-ray	O
Disc	O
,	O
and	O
the	O
other	O
was	O
to	O
contain	O
a	O
single	O
or	O
dual-layer	O
HD	B-Operating_System
DVD	I-Operating_System
.	O
</s>
<s>
In	O
November	O
2007	O
,	O
Warner	O
Brothers	O
put	O
development	O
of	O
the	O
Total	B-Device
HD	I-Device
discs	I-Device
on	O
hold	O
for	O
an	O
indefinite	O
amount	O
of	O
time	O
after	O
several	O
delays	O
.	O
</s>
<s>
Finally	O
,	O
on	O
January	O
4	O
,	O
2008	O
,	O
Warner	O
Bros	O
.	O
Pictures	O
announced	O
that	O
they	O
were	O
discontinuing	O
HD	B-Operating_System
DVD	I-Operating_System
support	O
,	O
putting	O
an	O
end	O
to	O
THD	O
's	O
development	O
.	O
</s>
