Patent ID: 7329136
Filing Date: 2008-02-12
Classification: H01R

Abstract:
1. A bi-directional electronic device with USB interface, comprising: a two-in-one USB connector having a USB standard-A type male connector and a USB standard-B type female connector disposed in a housing, wherein either said USB standard-A type male connector or said USB standard-B type female connector is used to connect to an external device and a voltage is accordingly supplied at a Vbus connection of said A-type and B-type USB connectors; a USB/battery power management unit coupled to said Vbus connection to detect whether said voltage is externally supplied thereto; and a USB OTG controller for determining an operation mode of said bi-directional electronic device with said USB interface as a host or a slave USB device, said USB OTG controller having an input coupled to an output of said USB/battery power management unit and determining said operation mode responsive to said output of said USB/battery power management unit.