Invention Grant
US08949631B2 USB power supply method and device, and end device and system using the same
有权
USB电源的方法和设备，以及终端设备和系统的使用方法
- Patent Title: USB power supply method and device, and end device and system using the same
- Patent Title (中): USB电源的方法和设备，以及终端设备和系统的使用方法
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Application No.: US13364364Application Date: 2012-02-02
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Publication No.: US08949631B2Publication Date: 2015-02-03
- Inventor: Hung-Yi Chen
- Applicant: Hung-Yi Chen
- Applicant Address: TW Tao Yuan Shien
- Assignee: Quanta Computer Inc.
- Current Assignee: Quanta Computer Inc.
- Current Assignee Address: TW Tao Yuan Shien
- Agency: Rabin & Berdo, P.C.
- Priority: TW100134354A 20110923
- Main IPC: G06F1/00
- IPC: G06F1/00 ; G06F3/00 ; G06F13/00 ; H02J7/00 ; G06F1/26
Abstract:
A Universal Serial Bus (USB) power supply method is provided. The method is applied to a USB client device to charge a battery of the USB client device. The USB client device is connected to a USB host device via a USB connection including a D+ signal wire and a D− signal wire. The USB power method includes: determining whether the USB host device is a dedicated charging port (DCP) in response to a connection event, providing a verification signal to the USB host device if the USB host device is a DCP, determining whether a verification response signal from the USB host device is received, and driving the USB host device to provide an auxiliary charging current via the D+ and D− signal lines for charging the battery when the verification response signal is received.
Public/Granted literature
- US20130080797A1 USB POWER SUPPLY METHOD AND DEVICE, AND END DEVICE AND SYSTEM USING THE SAME Public/Granted day:2013-03-28
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