Search International and National Patent Collections

1. (WO2017041461) EFFICIENT UNIVERSAL SERIAL BUS UTILIZATION METHOD AND UNIVERSAL SERIAL BUS DEVICE

Pub. No.:    WO/2017/041461    International Application No.:    PCT/CN2016/075995
Publication Date: Fri Mar 17 00:59:59 CET 2017 International Filing Date: Thu Mar 10 00:59:59 CET 2016
IPC: G06F 13/40
Applicants: SANECHIPS TECHNOLOGY CO., LTD.
深圳市中兴微电子技术有限公司
Inventors: WANG, Chao
王超
Title: EFFICIENT UNIVERSAL SERIAL BUS UTILIZATION METHOD AND UNIVERSAL SERIAL BUS DEVICE
Abstract:
A USB utilization method, a USB device and a storage medium. The method comprises: when it is detected that a USB connection cable is inserted, detecting a data communication hardware pin signal of a USB; when it is detected that the data communication hardware pin signal changes, determining that an inserted device is a communication device, and powering up a USB controller and a USB PHY; and when it is detected that the data communication hardware pin signal does not change, determining that the inserted device is a charging device, and not powering up the USB controller and the USB PHY. In this way, an unnecessary power-up initialization action of a USB can be avoided, both greatly simplifying an original flow and improving the accuracy of recognition.