Intel G1620T CM8063701448300 User Manual

Product codes
CM8063701448300
Page of 1272
Power Management
70
Datasheet
2. Intel DPST subsystem applies an image-specific enhancement to increase image 
contrast, brightness, and other attributes.
3. A corresponding decrease to the backlight brightness is applied simultaneously to 
produce an image with similar user-perceived quality (such as brightness) as the 
original image. Intel DPST 5.0 has improved the software algorithms and has minor 
hardware changes to better handle backlight phase-in and ensures the documented 
and validated method to interrupt hardware phase-in.
6.3.6.3
Intel
®
 Automatic Display Brightness
The Intel
 
Automatic Display Brightness feature dynamically adjusts the backlight 
brightness based upon the current ambient light environment. This feature requires an 
additional sensor to be on the panel front. The sensor receives the changing ambient 
light conditions and sends the interrupts to the Intel Graphics driver. As per the change 
in Lux, (current ambient light illuminance), the new backlight setting can be adjusted 
through BLC. The converse applies for a brightly lit environment. Intel Automatic 
Display Brightness increases the back light setting.
6.3.6.4
Intel
®
 Seamless Display Refresh Rate Switching Technology (Intel
®
 
SDRRS Technology)
When a Local Flat Panel (LFP) supports multiple refresh rates, the Intel
®
 Display 
Refresh Rate Switching power conservation feature can be enabled. The higher refresh 
rate will be used when on plugged in power or when the end user has not selected/
enabled this feature. The graphics software will automatically switch to a lower refresh 
rate for maximum battery life when the design application is on battery power and 
when the user has selected/enabled this feature.
There are two distinct implementations of Intel SDRRS – static and seamless. The 
static Intel SDRRS method uses a mode change to assign the new refresh rate. The 
seamless Intel SDRRS method is able to accomplish the refresh rate assignment 
without a mode change and therefore does not experience some of the visual artifacts 
associated with the mode change (SetMode) method.
6.4
Memory Controller Power Management
The main memory is power managed during normal operation and in low-power ACPI 
Cx states.
6.4.1
Disabling Unused System Memory Outputs
Any system memory (SM) interface signal that goes to a memory module connector in 
which it is not connected to any actual memory devices (such as DIMM connector is 
unpopulated, or is single-sided) is tri-stated. The benefits of disabling unused SM 
signals are:
Reduced power consumption.