Invention Grant
US09122813B2 USB host determination of whether a USB device provides power via a USB coupling
有权
USB主机确定USB设备是否通过USB耦合提供电源
- Patent Title: USB host determination of whether a USB device provides power via a USB coupling
- Patent Title (中): USB主机确定USB设备是否通过USB耦合提供电源
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Application No.: US13413146Application Date: 2012-03-06
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Publication No.: US09122813B2Publication Date: 2015-09-01
- Inventor: Miroslav Oljaca , Timothy J. Knowlton , Xiaoliang Xia
- Applicant: Miroslav Oljaca , Timothy J. Knowlton , Xiaoliang Xia
- Applicant Address: LU Luxembourg
- Assignee: SMSC HOLDINGS S.A.R.L.
- Current Assignee: SMSC HOLDINGS S.A.R.L.
- Current Assignee Address: LU Luxembourg
- Agency: Slayden Grubert Beard PLLC
- Main IPC: G06F1/26
- IPC: G06F1/26 ; G06F13/40
Abstract:
System and method for a USB host to determine whether or not a USB device provides power via a USB coupling between the USB host and the USB device. At a first time, it may be determined that the USB device is coupled to the USB host via a USB coupling and does not provide power. Power may be provided to the USB device via the USB coupling. At a second time it may be determined that the USB device does provide power via the USB coupling. Power may no longer be provided to the USB device via the USB coupling after it is determined that the USB device does provide power via the USB coupling. A battery of the USB host may be charged using power provided by the USB device via the USB coupling based on determining that the USB device does provide power via the USB coupling.
Public/Granted literature
- US20130238819A1 USB Host Determination of whether a USB Device Provides Power via a USB Coupling Public/Granted day:2013-09-12
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