Intel® Seamless Display Refresh Rate Switching Technology (Intel® SDRRS Technology) with eDP* Port

Intel® DRRS provides a mechanism where the monitor is placed in a slower refresh rate (the rate at which the display is updated). The system is smart enough to know that the user is not displaying either 3D or media like a movie where specific refresh rates are required. The technology is very useful in an environment such as a plane where the user is in battery mode doing E-mail, or other standard office applications. It is also useful where the user may be viewing web pages or social media sites while in battery mode.

Intel^® OLED Power Saving Technology (Intel^® OPST) 1.1

Intel^® OPST solution uses same HW infrastructure as Intel^® DPST. Frames are processed using frame change threshold based interrupt mechanism similar to Intel^® DPST. Intel^® OPST SW algorithm determines which pixels in the frame should be dimmed to save power keeping visual quality (such as contrast, color) impact to acceptable level. Since there is no backlight for OLED panels, the power savings come solely from pixel dimming.

Intel® Display Power Saving Technology (Intel® DPST)

The Intel® DPST technique achieves back-light power savings while maintaining a good visual experience. This is accomplished by adaptively enhancing the displayed image while decreasing the back-light brightness simultaneously. The goal of this technique is to provide equivalent end-user-perceived image quality at a decreased back-light 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 determines if the brightness of the displaying images and the image enhancement and back-light control needs to be altered.)
2. Intel® DPST subsystem applies an image-specific enhancement to increase image brightness.
3. A corresponding decrease to the back-light brightness is applied simultaneously to produce an image with similar user-perceived quality (such as brightness) as the original image.

Intel® DPST 7.1 has improved power savings without adversely affecting the performance.

Panel Self-Refresh 2 (PSR 2)

Low-Power Single Pipe (LPSP)

Low-power single pipe is a power conservation feature that helps save power by keeping the inactive pipes powered OFF. LPSP is achieved by keeping a pipe enabled during eDP* only with minimal display pipeline support.

Low-Power Dual Pipe (LPDP)

This feature is similar to LPSP and is applicable for designs with dual eDP* panels.

Intel® Smart 2D Display Technology (Intel® S2DDT)

Intel® S2DDT reduces display refresh memory traffic by reducing memory reads required for display refresh. Power consumption is reduced by less accesses to the IMC. Intel S2DDT is only enabled in single pipe mode.

Intel® S2DDT is most effective with:

• Display images well suited to compression, such as text windows, slide shows, and so on. Poor examples are 3D games.
• Static screens such as screens with significant portions of the background showing 2D applications, processor benchmarks, and so on, or conditions when the processor is idle. Poor examples are full-screen 3D games and benchmarks that flip the display image at or near display refresh rates.