<s>
An	O
integrated	B-Device
digital	I-Device
television	I-Device
(	O
IDTV	O
or	O
iDTV	O
)	O
set	O
is	O
a	O
television	O
set	O
with	O
a	O
built	O
in	O
digital	B-General_Concept
tuner	O
,	O
be	O
it	O
for	O
DVB-T2	B-Protocol
,	O
DVB-S2	O
,	O
DVB-C	B-Device
,	O
DMB-T/H	O
,	O
ATSC	B-Device
standards	I-Device
or	O
ISDB	B-Protocol
.	O
</s>
<s>
Most	O
of	O
them	O
also	O
allow	O
reception	O
of	O
analogue	O
signals	O
(	O
PAL	B-Language
,	O
SÉCAM	O
or	O
NTSC	O
)	O
.	O
</s>
<s>
Most	O
iDTVs	O
do	O
not	O
inherently	O
include	O
support	O
for	O
pay	O
TV	O
,	O
and	O
as	O
a	O
result	O
many	O
are	O
fitted	O
with	O
common	B-Device
interface	I-Device
slots	O
to	O
allow	O
the	O
use	O
of	O
a	O
conditional-access	B-Device
module	I-Device
.	O
</s>
<s>
They	O
may	O
also	O
include	O
support	O
for	O
other	O
features	O
of	O
a	O
digital	B-Application
television	I-Application
"	O
platform	O
"	O
,	O
such	O
as	O
an	O
interactive	O
television	O
engine	O
and	O
support	O
for	O
some	O
form	O
of	O
return	O
channel	O
.	O
</s>
<s>
A	O
small	O
number	O
of	O
iDTVs	O
include	O
a	O
digital	B-Application
video	I-Application
recorder	I-Application
,	O
which	O
removes	O
the	O
need	O
for	O
an	O
external	O
PVR	O
,	O
possibly	O
requiring	O
its	O
own	O
digital	B-General_Concept
set-top	O
box	O
.	O
</s>
<s>
For	O
example	O
,	O
in	O
many	O
European	O
countries	O
such	O
as	O
Germany	O
and	O
Sweden	O
,	O
DVB-C	B-Device
(	O
cable	O
)	O
is	O
the	O
most	O
common	O
digital	B-Application
TV	I-Application
tuner	O
in	O
televisions	O
,	O
whereas	O
in	O
the	O
UK	O
,	O
most	O
televisions	O
have	O
a	O
DVB-T	O
(	O
terrestrial	O
)	O
tuner	O
instead	O
.	O
</s>
