The power management system tracks the total amount of power drawn from a bus by devices connected to the bus and to the bus itself, based on the individual operational status of each device. The power manager system also tracks the total amount of power supplied to the bus. From this information the...http://www.google.com/patents/US5483656?utm_source=gb-gplus-sharePatent US5483656 - System for managing power consumption of devices coupled to a common bus
