Method and device for realizing USB OTG function on electronic equipment

A technology of electronic equipment and functions, applied in the field of data interface of electronic equipment, can solve the problems of many separate devices, large PCB area, complicated control, etc., and achieve the effects of simple control, prolonging standby time, and saving power consumption

Active Publication Date: 2010-12-01
ZTE CORP
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  • Abstract
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Problems solved by technology

The disadvantage of this scheme is that the control is more complicated, there are many separate devices, and the PCB area is large.

Method used

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  • Method and device for realizing USB OTG function on electronic equipment
  • Method and device for realizing USB OTG function on electronic equipment
  • Method and device for realizing USB OTG function on electronic equipment

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Embodiment Construction

[0048] In order to further illustrate the technical means and effects that the present invention takes to achieve the predetermined purpose, below in conjunction with the accompanying drawings and preferred embodiments, the method and device for realizing the USB OTG function on the electronic equipment proposed by the present invention will be described in detail as follows: rear.

[0049] Smartphones have developed rapidly in recent years. In addition to basic mobile phone functions, they also have functions such as high-speed data transmission, Internet, WIFI (Wireless Fidelity, Wireless Fidelity), GPS (Global Positioning System, Global Positioning System), camera, and multimedia. But the smart phone on the market is basically used as a USB slave device to transmit data with a PC, that is, a USB master device, during data transmission. If it needs to exchange data with other USB slave devices such as a U disk, it must be transferred through a PC. Therefore, the embodiments ...

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Abstract

The invention discloses a method and a device for realizing USB OTG function on electronic equipment. When external electronic equipment is connected with a USB OTG connecting unit, each pin state of the USB OTG connecting unit triggers a main processing unit to open or close a USB physical layer module. When the USB physical layer module is opened, the USB physical layer module executes identification and configuration on the external electronic equipment, and notifies the main processing unit of executing power supply operation. By designing the external electronic equipment identification flow and the detection closing flow, the method and the device for realizing the USB OTG function can identify a charger, USB master equipment and USB slave equipment, and can reasonably close the USB physical layer module inside the main processing unit when the external electronic equipment is not plugged. The device overcomes the defects of the conventional USB OTG schemes, and has the characteristics of simple control, no occupancy of a system bus, and low power consumption so as to prolong the standby time.

Description

technical field [0001] The invention relates to the technical field of data interface of electronic equipment, in particular to a method and a device for realizing USB OTG (USB On-The-Go) function on electronic equipment. Background technique [0002] With the development of science and technology, multimedia applications are becoming more and more extensive, data storage capacity is increasing, and the requirements for transmission rates are also increasing. In order to meet the requirements of high-speed data transmission between electronic equipment such as PDA (Personal Digital Assistant, personal digital assistant), mobile phone, digital camera, printer and PC (Personal Computer, personal computer), or between electronic equipment, more and more More and more electronic products have USB2.0 and USB OTG functions. [0003] USB (Universal Serial Bus, Universal Serial Bus) is one of the main standards for high-speed data transmission. It has the advantages of supporting h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/38G06F1/32
CPCY02B60/1235Y02B60/1228Y02D10/00
Inventor 谭永铨罗炜张驰俊
Owner ZTE CORP
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