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Method and system for working mode switchover of universal serial bus on-the-go (USB OTG) dual-role devices

A working method and equipment technology, applied in the field of information and communication, to achieve the effect of reducing switching operation time, improving operating experience, and simple operation

Inactive Publication Date: 2014-02-05
PHICOMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The problem to be solved in the present invention is to reduce the inconvenience of user operation, improve the user's operating experience, and obtain a method for switching between USB OTG dual-role devices with simple operation, including the following steps:

Method used

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  • Method and system for working mode switchover of universal serial bus on-the-go (USB OTG) dual-role devices
  • Method and system for working mode switchover of universal serial bus on-the-go (USB OTG) dual-role devices

Examples

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Embodiment 1

[0025] A printer and a mobile phone are embedded with NFC chips, both of which support NFC controllers. They are in the same LAN, and they are connected to each other through WIFI to realize data transmission. The printer and mobile phone are dual-purpose devices that support OTG technology. . Assuming that the corresponding driver compatibility program has been installed in place, such as figure 1 As shown, the printer corresponds to device A in the figure, and the mobile phone corresponds to device B in the figure. When the two devices are connected through WIFI, the printer is set to obtain the bus control right first, so the printer is in the Host, initialized as the host, and provides VBUS power. Raise and configure the mobile phone so that the mobile phone is in Device as the peripheral of the printer. The driver of the printer exists in the mobile terminal. Based on the printing needs of a document in the mobile phone, the mobile phone needs to be used as the host to r...

Embodiment 2

[0030] In order to ensure the quality of digital images and at the same time realize the viewing and editing of digital effects on the tablet computer, it is necessary to realize the information exchange between the digital camera and the tablet computer. Both a digital camera and a mobile phone are embedded with NFC chips, both of which support NFC controllers, and they are connected to each other through a Micro USB cable to realize data transmission. Both the digital camera and the tablet computer are dual-purpose devices that support OTG technology. Assuming that the corresponding driver compatibility program has been installed in place, such as figure 2 As shown, when the two devices are connected through the Micro USB cable, the digital camera is set to obtain the bus control first, and the tablet computer is only used as a display peripheral, and the display function is realized by receiving the display data provided by the digital camera. Therefore, the digital camera...

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Abstract

The invention discloses a method working mode switchover of universal serial bus on-the-go (USB OTG) dual-role devices and a system which the method is applied to. The method is based on near field communication (NFC) controllers in the USB OTG dual-role devices in the system, and automatic switchover of two device working modes is achieved by meeting the NFC trigger conditions between the two devices. Interface operation in switchover can be reduced according to the method, user operation experience is greatly improved according to an existing embedded device, the system is simultaneously simple to operate, professional operation does not occur, switchover operation time is reduced, and the acceptability is improved.

Description

technical field [0001] The invention relates to the field of information communication, in particular to a method for realizing switching of working modes of USB OTG dual-role devices and a system adopting the method. Background technique [0002] On the basis of being fully compatible with the USB2.0 standard, the USB OTG standard adds a power management function, which allows the device to operate as both a host and a peripheral device. Therefore, USB OTG has two types of devices: dual-role devices (Dual role devices) -role Device, referred to as DRD) and a single peripheral device (Peripheral-Only Device, referred to as POD), a single peripheral device is basically similar to the general peripheral function, so I don't need to go into details here. [0003] A dual-role device has two working modes of Host and Device. When working as a host, the dual-role OTG device can provide 8mA of current on the bus, while the previous standard host needs to provide 100-500mA of curre...

Claims

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Application Information

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IPC IPC(8): G06F13/10
Inventor 左成兵
Owner PHICOMM (SHANGHAI) CO LTD
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