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Disclosed is a method for a multiple-processor stepped performance mobile computer design. Benefits include improved functionality, improved user experience, and improved power performance.
English (United States)
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Method for a multiple-processor stepped performance mobile
Disclosed is a method for
a multiple-processor stepped
performance mobile computer design. Benefits include improved functionality,
improved user experience, and improved power performance.
The number of mobile
PCs (commonly referred to as laptops) is increasing every year. However, the
performance gap between high-end desktop PCs and battery-life-friendly mobile
PCs is quite large. As a result, some users maintain two PC systems, a desktop
PC to do software development or other performance-hungry tasks and a mobile PC
to take on the road.
Mobile PCs run at a
slower speed while running on battery to conserve battery life. When the laptop
is plugged into AC, the speed is stepped up and performance is improved.
The disclosed method
is a multiple-processor stepped performance mobile computer
design (PerformanceStep). The
disclosed method enables a laptop to run with one microprocessor (BSP) active while it is running on
battery, conserving battery life. However, when the laptop is plugged into AC
power or at a docking station, the other application microprocessors (APs) are
started up by the operating system, increasing the computing power (see Figures
1 and 2).
When the AC power is removed, the operating system would
complete outstanding tasks on the application processors and then disable them
or put them in a HALT state. The application processors would
stay in this low/no power...