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:
Jan. 07, 2003
Filed:
Jan. 18, 2000
Joseph J. Ervin, Stow, MA (US);
Sun Microsystems, Inc., Santa Clara, CA (US);
Abstract
In an electronic system with multiple power supplies, a method and apparatus dynamically determines the number of power supplies required to power up the system without overloading any supply. The individual power supplies do not turn on until the determined number of power supplies have received AC power and become operational before attempting a complete system power on. The amount of required power is determined before power up based on the actual power load present. The actual load is determined by sensing load indicators in each load device and computing the total power load. The amount of power from supplies which have received AC power is determined by detecting when AC power has been applied to each power supply and computing the total amount of power available. System power up is delayed when the number of power supplies which have received AC power is insufficient to power the system without an overload situation occurring.