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:
Dec. 07, 1999
Filed:
Aug. 25, 1997
James B Henrie, Grayslake, IL (US);
3Com Corporation, Santa Clara, CA (US);
Abstract
A method and apparatus for a dual power supply on a universal serial bus system using an overcurrent detect circuit. Dual power supplies in the universal serial bus system allows for greater flexibility of operation and is based on two separate power systems. The first power system is achieved using the power line on the bus connecting to the universal serial bus controller. The second power system is a separate power supply to power the downstream ports. Moreover, the universal serial bus system has an overcurrent and thermal error detect circuit based on the power system in order to achieve an efficient and cost effective method and apparatus in which to notify the universal serial bus controller of any error in the power system.