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Batteries and Displays for Mobile Devices
5.6 Low Power LCD Techniques
A number of low-power LCD techniques have been investigated. These include DLS,
extended DLS (EDLS), frame buffer compression, dynamic color depth control, variable
duty ratio refresh, backlight autoregulation, and dark window optimization. Each
technique saves the power consumption of the display system by reducing the activity
of the corresponding components such as the backlight luminance, the color depth, the
refresh duty ratio, and the pixel brightness.
5.6.1 Dynamic Luminance Scaling
DLS keeps the perceived intensity or contrast of the ...