<s>
Intel	B-Device
Display	I-Device
Power	I-Device
Saving	I-Device
Technology	I-Device
or	O
Intel	O
DPST	O
is	O
an	O
Intel	O
backlight	O
control	O
technology	O
.	O
</s>
<s>
Intel	O
claims	O
that	O
display	B-General_Concept
take	O
up	O
most	O
power	O
in	O
mobile	O
devices	O
and	O
reducing	O
backlight	O
linearly	O
affects	O
energy	O
footprint	O
.	O
</s>
<s>
The	O
Intel	O
DPST	O
subsystem	O
analyzes	O
the	O
image	O
to	O
be	O
displayed	O
and	O
it	O
uses	O
a	O
set	O
of	O
algorithms	O
to	O
change	O
the	O
chroma	O
value	O
of	O
pixels	B-Algorithm
while	O
reducing	O
the	O
brightness	O
of	O
backlight	O
simultaneously	O
such	O
that	O
there	O
is	O
minimum	O
perceived	O
visual	O
degradation	O
.	O
</s>
<s>
When	O
the	O
frame	O
to	O
be	O
projected	O
and	O
the	O
frame	O
being	O
projected	O
has	O
considerable	O
difference	O
a	O
software	O
interrupt	O
is	O
asserted	O
and	O
new	O
chroma	O
values	O
for	O
pixels	B-Algorithm
and	O
brightness	O
values	O
are	O
calculated	O
.	O
</s>
