Intel CW8064701487007 Datasheet download pdf (Page 67)

Datasheet, Volume 1 67

Power Management

4.6.6 Display Power Savings Technology 6.0 (DPST)

This is a mobile only supported power management feature.

The Intel DPST technique achieves backlight power savings while maintaining a good

visual experience. This is accomplished by adaptively enhancing the displayed image

while decreasing the backlight brightness simultaneously. The goal of this technique is

to provide equivalent end-user-perceived image quality at a decreased backlight power

level.

1. The original (input) image produced by the operating system or application is

analyzed by the Intel DPST subsystem. An interrupt to Intel DPST software is

generated whenever a meaningful change in the image attributes is detected. (A

meaningful change is when the Intel DPST software algorithm determines that

enough brightness, contrast, or color change has occurred to the displaying images

that the image enhancement and backlight control needs to be altered.)

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.

4.6.7 Automatic Display Brightness (ADB)

This is a mobile only supported power management feature.

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.

4.6.8 Intel

Seamless Display Refresh Rate Switching

Technology (Intel

SDRRS Technology)

This is a mobile only supported power management feature.

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 notebook is on battery power and when the user has

selected/enabled this feature. There are two distinct Intel implementations: static and

seamless. The static Intel

Display Refresh Rate Switching Technology (Intel

DRRS

Technology) method uses a mode change to assign the new refresh rate. The seamless

Intel

Seamless Display Refresh Rate Switching Technology (Intel

SDRRS

Technology) 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.

1 2 ... 62 63 64 65 66 67 68 69 70 71 72 ... 171 172

Comments to this Manuals

No comments

Intel CW8064701487007 Datasheet Page 67

Comments to this Manuals

Related products and manuals for Processors Intel CW8064701487007