<s>
MediaGuard	B-Device
is	O
a	O
conditional	B-Architecture
access	I-Architecture
system	I-Architecture
for	O
digital	B-Application
television	I-Application
developed	O
by	O
SECA	O
(	O
Société	O
Européenne	O
de	O
Contrôle	O
d'Accès	O
;	O
renamed	O
to	O
Canal+	O
Technologies	O
SA	O
)	O
(	O
CEO	O
François	O
Carayol	O
)	O
,	O
a	O
subsidiary	O
of	O
Canal+	O
Group	O
,	O
sold	O
to	O
Thomson	O
(	O
CEO	O
Thierry	O
Breton	O
)	O
.	O
</s>
<s>
Then	O
Canal+	O
Technologies	O
SA	O
was	O
broken	O
in	O
two	O
pieces	O
by	O
Thomson	O
in	O
2003	O
,	O
the	O
MediaGuard	B-Device
sold	O
to	O
Nagra	O
France	O
and	O
the	O
MediaHighway	O
to	O
NDS	O
France	O
.	O
</s>
<s>
MediaGuard	B-Device
has	O
been	O
on	O
the	O
European	O
market	O
since	O
1996	O
.	O
</s>
<s>
MediaGuard	B-Device
is	O
notably	O
used	O
by	O
Canal+	O
.	O
</s>
<s>
Manufacturers	O
which	O
incorporate	O
MediaGuard	B-Device
into	O
their	O
equipment	O
are	O
notably	O
Hitachi	O
,	O
Ltd.	O
,	O
Humax	O
,	O
JVC	O
,	O
Kenwood	O
Electronics	O
,	O
Nokia	O
,	O
Pace	O
Micro	O
Technology	O
,	O
Philips	O
,	O
Pioneer	O
Corporation	O
,	O
Sagem	O
,	O
Samsung	O
Electronics	O
,	O
Sony	O
Corporation	O
,	O
Strong	O
,	O
Thomson	O
,	O
and	O
Toshiba	O
.	O
</s>
<s>
The	O
original	O
MediaGuard	B-Device
system	O
has	O
been	O
broken	O
by	O
the	O
end	O
of	O
the	O
1990s	O
,	O
allegedly	O
by	O
rival	O
NDS	B-Device
Group	I-Device
,	O
which	O
resulted	O
in	O
new	O
cards	O
being	O
distributed	O
to	O
customers	O
in	O
2002	O
.	O
</s>
<s>
This	O
original	O
version	O
of	O
MediaGuard	B-Device
in	O
the	O
set-top-box	O
is	O
composed	O
of	O
two	O
elements	O
:	O
</s>
<s>
This	O
technology	O
,	O
called	O
the	O
HyperPanel	O
run	O
has	O
been	O
split	O
into	O
two	O
subsets	O
:	O
MediaHighway	O
and	O
MediaGuard	B-Device
;	O
</s>
