<s>
DVB	B-Device
3D-TV	I-Device
is	O
a	O
new	O
standard	O
that	O
partially	O
came	O
out	O
at	O
the	O
end	O
of	O
2010	O
which	O
included	O
techniques	O
and	O
procedures	O
to	O
send	O
a	O
three-dimensional	B-Algorithm
video	I-Algorithm
signal	O
through	O
actual	O
DVB	B-Application
transmission	O
standards	O
(	O
Cable	B-Device
,	O
Terrestrial	O
or	O
Satellite	O
)	O
.	O
</s>
<s>
Currently	O
there	O
is	O
a	O
commercial	O
requirement	O
text	O
for	O
3D	B-Algorithm
TV	I-Algorithm
broadcasters	B-Operating_System
and	O
Set-top	O
box	O
manufacturers	O
,	O
but	O
no	O
technical	O
information	O
is	O
in	O
there	O
.	O
</s>
<s>
Nowadays	O
3D	B-Algorithm
television	I-Algorithm
technology	O
is	O
already	O
in	O
its	O
first	O
steps	O
regarding	O
its	O
standardization	O
,	O
now	O
the	O
major	O
3D	O
market	O
is	O
in	O
theaters	O
and	O
Blu-ray	O
Disc	O
players	O
with	O
stereoscopic	B-Algorithm
systems	O
,	O
but	O
in	O
the	O
near	O
future	O
it	O
will	O
be	O
extended	O
to	O
diffusion	O
,	O
and	O
later	O
Free	B-Operating_System
viewpoint	I-Operating_System
television	I-Operating_System
will	O
come	O
into	O
our	O
homes	O
,	O
which	O
means	O
the	O
need	O
of	O
new	O
coding	B-Algorithm
and	O
transmission	O
standards	O
.	O
</s>
<s>
The	O
implantation	O
of	O
first	O
generation	O
of	O
DVB	B-Device
3D-TV	I-Device
will	O
be	O
staggered	O
:	O
</s>
<s>
Phase	O
1	O
:	O
the	O
first	O
standard	O
will	O
have	O
forward	B-General_Concept
compatibility	I-General_Concept
with	O
actual	O
HD	B-Device
systems	I-Device
with	O
just	O
some	O
firmware	B-Application
actualization	O
at	O
HD	B-Device
systems	I-Device
set-top	O
boxes	O
and	O
,	O
of	O
course	O
,	O
the	O
need	O
for	O
3D	O
panels	O
;	O
however	O
signaling	B-Application
or	O
distribution	O
formats	O
should	O
not	O
prevent	O
future	O
expansion	O
to	O
support	O
new	O
3D	O
encoding	B-Algorithm
formats	O
.	O
</s>
<s>
This	O
system	O
only	O
works	O
with	O
stereoscopic	B-Algorithm
Frame	O
sequential	O
3D	O
systems	O
.	O
</s>
<s>
Requirements	O
for	O
this	O
system	O
,	O
which	O
is	O
called	O
Frame	O
compatible	O
format	O
,	O
are	O
included	O
in	O
the	O
commercial	O
requirements	O
of	O
DVB	B-Application
.	O
</s>
<s>
Some	O
broadcasters	B-Operating_System
like	O
Sky3D	O
or	O
Canal+3D	O
are	O
already	O
using	O
this	O
technology	O
,	O
which	O
is	O
largely	O
thought	O
for	O
PayTV	O
.	O
</s>
<s>
Phase	O
2	O
:	O
the	O
use	O
of	O
new	O
broadcasting	B-Operating_System
requirements	O
for	O
specific	O
3D	O
streams	O
wo	O
n't	O
be	O
compatible	O
with	O
actual	O
3D	O
STB	O
,	O
but	O
it	O
would	O
be	O
service	O
compatible	O
with	O
2D	O
STB	O
if	O
no	O
specific	O
3D	O
STB	O
is	O
available	O
by	O
using	O
Scalable	B-Application
Video	I-Application
Coding	I-Application
and	O
Multiview	B-Algorithm
Video	I-Algorithm
Coding	I-Algorithm
techniques	O
,	O
i.e.	O
</s>
<s>
This	O
system	O
is	O
called	O
service	O
compatible	O
and	O
is	O
designed	O
for	O
Free-to-air	O
group	O
of	O
broadcasters	B-Operating_System
.	O
</s>
<s>
Matrix	O
of	O
signal	O
formats	O
for	O
3DTV	B-Algorithm
:	O
</s>
<s>
Compatibility	O
level	O
1st	O
generation	O
3DTV	B-Algorithm
2nd	O
generation	O
3DTV	B-Algorithm
3rd	O
generation	O
3DTV	B-Algorithm
Level	O
4	O
:	O
</s>
<s>
HD	B-Device
service	O
compatible	O
(	O
CSC	O
)	O
2D	O
HD	B-Device
+	O
MVC	B-Algorithm
(	O
L	O
,	O
R	O
formed	O
by	O
matrixing	O
:	O
depth	O
info	O
)	O
2D	O
HD	B-Device
+	O
MVC	B-Algorithm
(	O
Depth	O
,	O
occlusion	O
and	O
transparency	O
data	O
)	O
Level	O
3	O
:	O
</s>
<s>
HD	B-Device
Frame	O
compatible	O
compatible	O
(	O
FCC	O
)	O
Frame	O
compatible	O
+	O
MPEG	O
resolution	O
extension	O
(	O
ex	O
.	O
</s>
<s>
SVC	B-Application
)	O
Level	O
2	O
:	O
</s>
<s>
Conventional	O
HD	B-Device
Frame	O
compatible	O
(	O
CFC	O
)	O
L	O
and	O
R	O
in	O
same	O
HD	B-Device
frame	O
Level	O
1	O
:	O
</s>
<s>
Regarding	O
how	O
a	O
signal	O
once	O
it	O
's	O
decoded	O
is	O
sent	O
to	O
the	O
display	B-Algorithm
,	O
current	O
stereoscopic	B-Algorithm
systems	O
use	O
a	O
frame-sequential	O
3D	O
signal	O
.	O
</s>
<s>
Left	O
and	O
right	O
frames	O
are	O
sent	O
alternately	O
to	O
the	O
display	B-Algorithm
and	O
by	O
diverse	O
systems	O
like	O
shuttered	B-Algorithm
glasses	I-Algorithm
or	O
polarized	B-Algorithm
glasses	I-Algorithm
are	O
then	O
shown	O
to	O
each	O
eye	O
.	O
</s>
<s>
This	O
is	O
made	O
by	O
a	O
spatial	O
multiplex	O
that	O
combines	O
the	O
left	O
and	O
right	O
video	O
sequences	O
in	O
one	O
HD	B-Device
stream	O
which	O
is	O
coded	B-Algorithm
with	O
H.264	B-Application
as	O
a	O
single	O
image	O
.	O
</s>
<s>
This	O
allows	O
to	O
handle	O
video	O
as	O
normal	O
HD	B-Device
video	O
using	O
typical	O
channels	O
and	O
interfaces	O
like	O
HDMI	B-Protocol
,	O
which	O
is	O
possible	O
in	O
this	O
1.4a	O
version	O
.	O
</s>
<s>
Frame	O
compatible	O
(	O
CFC	O
)	O
model	O
is	O
also	O
compatible	O
with	O
2D	O
HD	B-Device
mode	O
in	O
the	O
same	O
channel	O
,	O
adding	O
some	O
signalling	O
for	O
switching	O
from	O
2D	O
to	O
3D	O
.	O
</s>
<s>
Side	O
by	O
side	O
(	O
SbS	O
)	O
format	O
just	O
put	O
the	O
left	O
and	O
right	O
images	O
one	O
next	O
to	O
the	O
other	O
in	O
an	O
HD	B-Device
image	O
.	O
</s>
<s>
Because	O
of	O
this	O
,	O
a	O
horizontal	O
decimate	B-Algorithm
is	O
required	O
which	O
causes	O
halving	O
of	O
horizontal	O
definition	O
.	O
</s>
<s>
DVB	B-Device
3D-TV	I-Device
supports	O
following	O
SbS	O
formats	O
:	O
</s>
<s>
Top	O
and	O
Bottom	O
(	O
TaB	O
)	O
format	O
put	O
left	O
and	O
right	O
images	O
one	O
above	O
the	O
other	O
in	O
a	O
HD	B-Device
image	O
.	O
</s>
<s>
In	O
this	O
case	O
,	O
vertical	O
decimate	B-Algorithm
is	O
required	O
which	O
causes	O
halving	O
of	O
vertical	O
definition	O
.	O
</s>
<s>
DVB	B-Device
3D-TV	I-Device
supports	O
following	O
TaB	O
formats	O
:	O
</s>
<s>
There	O
are	O
basically	O
two	O
types	O
of	O
text	O
displayed	O
on	O
screen	O
that	O
need	O
additional	O
broadcasting	B-Operating_System
information	O
to	O
be	O
displayed	O
on	O
a	O
3D	B-Algorithm
display	I-Algorithm
:	O
</s>
<s>
Using	O
standards	O
for	O
sub-titling	O
already	O
available	O
for	O
DVB	B-Application
broadcast	B-Operating_System
systems	O
,	O
in	O
addition	O
to	O
depth	O
information	O
provided	O
by	O
the	O
broadcasters	B-Operating_System
,	O
the	O
STB	O
should	O
position	O
correctly	O
the	O
captions	O
into	O
the	O
L	O
and	O
R	O
pictures	O
mixed	O
with	O
the	O
original	O
3D	B-Algorithm
image	I-Algorithm
.	O
</s>
<s>
The	O
DVB	B-Device
3D-TV	I-Device
subtitling	O
solution	O
will	O
use	O
existing	O
DVB	B-Application
subtitling	I-Application
implementations	O
and	O
will	O
be	O
backward	B-General_Concept
compatible	I-General_Concept
with	O
2D	O
streams	O
.	O
</s>
<s>
Service	O
guide	O
:	O
the	O
STB	O
generates	O
multimedia	O
content	O
such	O
as	O
EPG	B-Device
for	O
his	O
service	O
guide	O
,	O
which	O
combines	O
the	O
use	O
of	O
data	O
preloaded	O
into	O
the	O
receiver	O
with	O
data	O
provided	O
by	O
the	O
broadcaster	B-Operating_System
,	O
in	O
the	O
form	O
of	O
service	B-Application
information	I-Application
.	O
</s>
<s>
The	O
main	O
function	O
of	O
signaling	B-Application
for	O
frame	O
compatible	O
3DTV	B-Algorithm
is	O
to	O
signal	O
the	O
presence	O
of	O
a	O
3D	O
or	O
2D	O
video	O
stream	O
.	O
</s>
<s>
It	O
must	O
be	O
also	O
possible	O
to	O
include	O
in	O
the	O
broadcast	B-Operating_System
signal	O
information	O
about	O
the	O
pixel	O
arrangement	O
used	O
to	O
decimate	B-Algorithm
the	O
master	O
HDTV	B-Device
full	O
samples/line	O
pictures	O
to	O
create	O
the	O
anamorphic	O
version	O
,	O
if	O
3D	O
is	O
available	O
.	O
</s>
<s>
It	O
's	O
interesting	O
to	O
signal	O
also	O
for	O
3D	O
receivers	O
the	O
3D	O
events	O
that	O
are	O
available	O
,	O
for	O
which	O
3D	O
availability	O
should	O
appear	O
on	O
EPG	B-Device
.	O
</s>
<s>
For	O
future	O
service	O
compatible	O
(	O
CSC	O
)	O
3DTV	B-Algorithm
,	O
signal	O
that	O
a	O
3D	O
version	O
of	O
a	O
2D	O
service	O
or	O
event	O
is	O
being	O
simulcast	O
,	O
and	O
vice	O
versa	O
will	O
be	O
needed	O
.	O
</s>
<s>
Multiview	B-Algorithm
video	I-Algorithm
coding	I-Algorithm
is	O
a	O
compression	O
standard	O
appended	O
from	O
H.264/MPEG	B-Application
-4	I-Application
AVC	I-Application
which	O
allows	O
send	O
stereoscopic	B-Algorithm
3D	I-Algorithm
video	O
without	O
resolution	O
loss	O
due	O
to	O
spatial	O
multiplex	O
,	O
and	O
reducing	O
overhead	O
of	O
sending	O
2	O
HD	B-Device
images	O
up	O
to	O
50%	O
and	O
in	O
a	O
single	O
video	O
stream	O
.	O
</s>
<s>
It	O
is	O
used	O
in	O
Blu-ray	O
players	O
,	O
but	O
at	O
the	O
moment	O
it	O
's	O
not	O
applicable	O
to	O
broadcast	B-Operating_System
because	O
of	O
the	O
processing	O
time	O
for	O
encoding	B-Algorithm
,	O
which	O
uses	O
motion	O
compensation	O
algorithms	O
.	O
</s>
<s>
Nevertheless	O
,	O
there	O
have	O
been	O
some	O
experiments	O
with	O
MVC	B-Algorithm
3D	O
broadcast	B-Operating_System
by	O
Fraunhofer	O
society	O
over	O
2nd	O
generation	O
DVB	B-Application
(	O
DVB-T2	B-Protocol
,	O
DVB-C2	B-Device
and	O
DVB-S2	O
)	O
.	O
</s>
<s>
Total	O
Free	B-Operating_System
viewpoint	I-Operating_System
television	I-Operating_System
can	O
be	O
reached	O
by	O
capturing	O
multiple	O
views	O
and	O
extracting	O
2D+depth	B-Algorithm
information	O
from	O
them	O
to	O
create	O
a	O
3D	O
model	O
of	O
the	O
scene	O
.	O
</s>
<s>
Currently	O
this	O
system	O
is	O
being	O
investigated	O
,	O
but	O
the	O
coding	B-Algorithm
complexity	O
and	O
great	O
bandwidth	O
requirements	O
make	O
current	O
broadcasting	B-Operating_System
applications	O
using	O
Multiview	B-Algorithm
Video	I-Algorithm
Coding	I-Algorithm
impractical	O
,	O
so	O
a	O
totally	O
new	O
compression	O
scheme	O
and	O
capture	O
techniques	O
need	O
to	O
be	O
investigated	O
.	O
</s>
