Power conservation in microprocessor controlled devices

摘要: Power may be conserved and battery life extended in a microprocessor controlled device by providing two microprocessors, one of which is low power, performance, speed processor for performing background tasks, the other high computationally intensive foreground tasks. The activates when performance task to performed. When activating processor, also controls device's power supply provide voltage processor. run at variable clock speeds, with consumption increasing speed. selects its own based upon performed, including each software subroutine task. associated thereby executed speed, chosen lowest possible consistent