Sony KDS-R60XBR1 - 60" Rear Projection TV, Training Manual, Page: 6 / 122

TVP-21 3
Technologies & Features
Features
Advanced Iris
The Average Picture Level (APL) drives the Advanced Iris operation. APL
is defined i
n video systems, as the average level of the picture signal
during active scanning time integrated over a frame period; defined
as a percentage of the range between blanking and reference white
level. Basically, the video scene is measure for overall brightness
level and the iris’s aperture opening is increased of decreased to
either increase the whites in the brighter scenes, or decrease the
blacks in the darker scenes. Subsequently, achieving a contrast
ratio for the SXRD models approaching10,000:1.
500 cd/m2
0.025 cd/m2
250 cd/m2
0.05 cd/m2
Black
White
Black
White
Advance Iris
Full Closed Full Open
0 cd/m2
*
*Candela per Meter Square