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USB master and slave switching method and system for VR device

A technology of USB interface and equipment, which is applied in the USB master-slave switching method and system field of VR equipment, can solve problems such as restricting use and promotion, and achieve the effect of avoiding single function

Active Publication Date: 2016-07-13
SHENZHEN DLODLO NEW TECHNOLOGY CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the mobile phone is charged by the VR device, the mobile phone is used as a slave, and the VR is used as a host. The mobile phone requires a specific usb protocol, so that the mobile phone and VR can communicate and charge, and realize USB master-slave device mode switching. This greatly limits the communication and charging of mobile phones and VR, and also restricts the use and promotion of VR.

Method used

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  • USB master and slave switching method and system for VR device
  • USB master and slave switching method and system for VR device
  • USB master and slave switching method and system for VR device

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Embodiment Construction

[0043] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions protected by the present invention will be clearly and completely described below using specific embodiments and accompanying drawings. Obviously, the implementation described below Examples are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in this patent, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this patent.

[0044] This embodiment provides a VR device USB master-slave switching method, including: a VR device and an electronic device;

[0045] When the VR device determines its state of charging the electronic device, the VR device acts as the host and performs master-slave switching with the electronic device through the HNP protocol;

[0046] After master-slave switching, when the electronic ...

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Abstract

The invention discloses a USB master and slave switching method for a VR device. The VR device sends an HNP enable descriptor to an electronic device, it is indicated that the VR device supports an HNP, the electronic device replies ACK after receiving the HNP enable descriptor, and after the VR device receives the reply, a bus is hung; the electronic device is disconnected, the HNP is started, and bus discharge is in a low-level state; the VR device is pulled upwards, the level state is high level, the VR device is connected with the electronic device, and at the time, the VR device becomes a USB slave machine; when the electronic device detects to be connected with the VR device, the electronic device becomes a USB master machine, a bus reset signal is sent, the bus starts to be used, the electronic device starts to enumerate the VR device again, and the functions that the VR device communicates with the electronic device and is charged are achieved. A complete switching method is provided, and the functions of the VR device are expanded, so that the VR device can serve as the master machine and the slave machine.

Description

technical field [0001] The invention relates to the field of VR, in particular to a USB master-slave switching method and system for a VR device. Background technique [0002] As we all know, at present, when many electronic devices are connected to different external electronic devices through the USB interface to exchange data, they need to choose to work in the master mode or the slave mode according to the type of the connected external electronic device. [0003] In the field of VR (Virtual Reality, virtual reality, referred to as VR), VR can communicate with the USB interface of the mobile phone through the USB interface, and the VR and the mobile phone can charge each other. However, when the mobile phone is charged by the VR device, the mobile phone is used as a slave, and the VR is used as a host. The mobile phone requires a specific usb protocol, so that the mobile phone and VR can communicate and charge, and realize USB master-slave device mode switching. In this...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/40H02J7/00
CPCG06F13/4068H02J7/00H02J7/342
Inventor 李刚张丰学
Owner SHENZHEN DLODLO NEW TECHNOLOGY CO LTD
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