Patent Number: 6,170,062

Title: Fault detection on dual supply system for a universal serial bus system

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.

Inventors: Henrie; James B. (Grayslake, IL)

Assignee: 3Com Corporation

International Classification: G06F 11/20 (20060101); G06F 1/26 (20060101); G06F 11/24 (20060101); G06F 11/267 (20060101); G06F 001/28 ()

Expiration Date: 01/02/2018