The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 18, 2015
Filed:
Nov. 15, 2011
Yongping Shao, Shenzhen, CN;
Huiqin Shi, Shenzhen, CN;
Min Xu, Shenzhen, CN;
Tao Wang, Shenzhen, CN;
Tierui Yao, Shenzhen, CN;
Xiaofeng Zhang, Shenzhen, CN;
Yongping Shao, Shenzhen, CN;
Huiqin Shi, Shenzhen, CN;
Min Xu, Shenzhen, CN;
Tao Wang, Shenzhen, CN;
Tierui Yao, Shenzhen, CN;
Xiaofeng Zhang, Shenzhen, CN;
ZTE CORPORATION, Shenzhen, CN;
Abstract
The present disclosure provides an electronic device having a USB interface and a method for starting USB communication with such an electronic device, so as to solve the problem of a risk of damaging a mobile phone terminal device arising from sharing of an interface by a charger and a USB communication cable in the related art. In the electronic device, a port GPIO of a baseband chip is connected to a pin USB_VBUS of a USB interface of the baseband chip; based on this circuit, a power management chip detects a state of plugging-in-or-pulling-out of the charger and generates a corresponding interrupt request; and the baseband chip controls the GPIO to output a corresponding level according to the interrupt request. By connecting the port GPIO and the pin USB_VBUS and controlling an output level of GPIO with a software, a high level or a low level (as a triggering signal for starting or terminating the USB communication) is input to the pin USB_VBUS, thus avoiding damage to the device.