The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 23, 1996
Filed:
Dec. 08, 1994
Krishnamurthi Kannan, Yorktown Heights, NY (US);
Christopher D Jones, Georgetown, KY (US);
Nathan J Lee, New City, NY (US);
Kyriakos Leontiades, Boca Raton, FL (US);
Frank P Novak, Park Ridge, NJ (US);
Vikram Sharma, Pleasantville, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A system and method for managing power in a portable, pen-based notebook computer. The system and method provides 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 which are selectively powered so that the portable computer consumes the minimum power necessary to perform a particular function 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 for monitoring battery condition, user invoked functions, and system state and power management for controlling the operation of each of the CPUs as a function of the conditions sensed.