<s>
scRGB	B-Device
is	O
a	O
wide	O
color	O
gamut	O
RGB	O
color	B-Algorithm
space	I-Algorithm
created	O
by	O
Microsoft	O
and	O
HP	O
that	O
uses	O
the	O
same	O
color	O
primaries	O
and	O
white/black	O
points	O
as	O
the	O
sRGB	O
color	B-Algorithm
space	I-Algorithm
but	O
allows	O
coordinates	O
below	O
zero	O
and	O
greater	O
than	O
one	O
.	O
</s>
<s>
Negative	O
numbers	O
enables	O
scRGB	B-Device
to	O
encompass	O
most	O
of	O
the	O
CIE	O
1931	O
color	B-Algorithm
space	I-Algorithm
while	O
maintaining	O
simplicity	O
and	O
backward	B-General_Concept
compatibility	I-General_Concept
with	O
sRGB	O
without	O
the	O
complexity	O
of	O
color	O
management	O
.	O
</s>
<s>
The	O
cost	O
of	O
maintaining	O
compatibility	O
with	O
sRGB	O
is	O
that	O
approximately	O
80%	O
of	O
the	O
scRGB	B-Device
color	I-Device
space	I-Device
consists	O
of	O
imaginary	O
colors	O
.	O
</s>
<s>
Large	O
positive	O
numbers	O
allow	O
high	B-General_Concept
dynamic	I-General_Concept
range	I-General_Concept
images	O
to	O
be	O
represented	O
,	O
though	O
the	O
range	O
is	O
inferior	O
to	O
that	O
of	O
some	O
other	O
high	B-General_Concept
dynamic	I-General_Concept
range	I-General_Concept
formats	O
such	O
as	O
OpenEXR	B-Application
.	O
</s>
<s>
The	O
16	O
bit	O
scRGB(16 )	O
encoding	O
is	O
the	O
linear	O
RGB	O
channels	O
converted	O
by	O
.	O
</s>
<s>
The	O
12-bit	O
scRGB-nl	O
encoding	O
is	O
the	O
linear	O
RGB	O
channels	O
passed	O
through	O
the	O
same	O
opto-electric	O
conversion	O
function	O
as	O
sRGB	O
(	O
for	O
negative	O
numbers	O
use	O
)	O
and	O
then	O
converted	O
by	O
.	O
</s>
<s>
The	O
first	O
implementation	O
of	O
scRGB	B-Device
was	O
the	O
GDI+	O
API	O
in	O
Windows	B-Application
Vista	I-Application
.	O
</s>
<s>
At	O
WinHEC	O
2008	O
Microsoft	O
announced	O
that	O
Windows	B-Device
7	I-Device
would	O
support	O
48-bit	O
scRGB	B-Device
(	O
which	O
for	O
HDMI	B-Protocol
can	O
be	O
converted	O
and	O
output	O
as	O
xvYCC	O
)	O
.	O
</s>
<s>
The	O
components	O
in	O
Windows	B-Device
7	I-Device
that	O
support	O
48-bit	O
scRGB	B-Device
are	O
Direct3D	B-Application
,	O
the	O
Windows	O
Imaging	O
Component	O
,	O
and	O
the	O
Windows	O
Color	O
System	O
and	O
they	O
support	O
it	O
in	O
both	O
full	O
screen	O
exclusive	O
mode	O
and	O
in	O
video	O
overlays	O
.	O
</s>
<s>
The	O
origin	O
of	O
the	O
sc	O
in	O
scRGB	B-Device
is	O
shrouded	O
in	O
mystery	O
.	O
</s>
<s>
According	O
to	O
Michael	O
Stokes	O
(	O
the	O
national	O
and	O
international	O
leader	O
of	O
the	O
International	O
Electrotechnical	O
Commission	O
,	O
or	O
IEC	O
,	O
group	O
working	O
on	O
scRGB	B-Device
)	O
,	O
the	O
name	O
appeared	O
when	O
the	O
Japanese	O
national	O
committee	O
requested	O
a	O
name	O
change	O
from	O
the	O
earlier	O
XsRGB	O
(	O
excess	O
RGB	O
)	O
.	O
</s>
<s>
The	O
two	O
leading	O
candidates	O
for	O
meaning	O
are	O
"	O
specular	O
RGB	O
"	O
because	O
scRGB	B-Device
supports	O
whites	O
greater	O
than	O
the	O
diffuse	O
1.0	O
values	O
,	O
and	O
"	O
standard	O
compositing	O
RGB	O
"	O
because	O
the	O
linearity	O
,	O
floating-point	O
support	O
,	O
HDR	O
(	O
high	B-General_Concept
dynamic	I-General_Concept
range	I-General_Concept
)	O
support	O
,	O
and	O
wide	O
gamut	O
support	O
are	O
ideally	O
suited	O
for	O
compositing	O
.	O
</s>
<s>
This	O
meaning	O
also	O
implicitly	O
emphasizes	O
that	O
scRGB	B-Device
is	O
not	O
intended	O
to	O
be	O
directly	O
supported	O
in	O
devices	O
or	O
formats	O
,	O
since	O
by	O
definition	O
scRGB	B-Device
encompasses	O
values	O
that	O
are	O
beyond	O
both	O
the	O
human	O
visual	O
system	O
and	O
(	O
even	O
theoretically	O
)	O
realizable	O
physical	O
devices	O
.	O
</s>
