System for distributed power management in portable computers

Details System for distributed power management in portable computers System for distributed power management in portable computers

1992-04-15

1995-06-06

MacDonald, Allen R.

Boots, shoes, and leggings

364707, 365229, 371 91, G06F 1310, G06F 900

Patent

active

054230454

ABSTRACT:
A provides a system and method for managing power in a portable, pen-based notebook computer. The system and method provides a means for minimizing power consumption by collecting and interpreting power related data of various processing elements while hiding many of the details from the end-user. The system monitors, collects, and acts, upon power-related data in a portable computer to maximize the amount of time the portable computer can be used between battery re-charging with minimal user intervention. The system has a plurality of independently controllable power planes and a plurality of central processing units (CPUs) operating asynchronously with respect to each other. The present invention is further comprised of an on/off glue logic means for monitoring battery condition, user invoked functions, and system state and a power management means for controlling the operation of each of the CPUs as a function of the conditions sensed by a sensing means.

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