Device and method capable of automatically switching into USB host or peripherals

A technology of peripheral equipment and automatic switching, applied in the direction of instruments, electrical digital data processing, etc., can solve the problems of unclear use of mini-AB connector, inconvenience for users, USBOTG equipment cannot be converted into the correct role, etc.

Inactive Publication Date: 2008-07-23
MOAI ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Because USB OTG must rely on the ID pin to determine the role of interconnection, but when using USB OTG devices for interconnection, common users often do not

Method used

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  • Device and method capable of automatically switching into USB host or peripherals
  • Device and method capable of automatically switching into USB host or peripherals
  • Device and method capable of automatically switching into USB host or peripherals

Examples

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Embodiment Construction

[0030] image 3 It is an embodiment of the present invention, illustrating a schematic diagram of a device that can automatically switch to be a USB host or a peripheral device, wherein the device is applied in a device 301 equipped with a USB interface. refer to image 3 , the device that can automatically switch to be a USB host or a peripheral device includes a host mode element 303 , a peripheral mode element 305 , a random automatic switcher 307 , and a detection element 309 . Wherein, the random automatic switcher 307 switches and connects between the host mode component 303 and the peripheral mode component 305 at random time, so that the device 301 equipped with the USB interface becomes a USB host device or a peripheral device at random. The detection element 309 is connected with the random automatic switcher 307 , the VBUS pin, the D+ pin and the D− pin of the USB interface.

[0031] When the random automatic switcher 307 switches to the host mode element 303 or t...

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PUM

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Abstract

The invention discloses a device which can automatically switch into a host or peripheral equipment with universal series bus (USB) and a relative method. In a device with USB interfaces, the inventive device can automatically switch into a USB host or USB device via checking USB handshake protocol. The inventive device comprises a host mode component, a peripheral mode component, a random automatic switcher and a check component, wherein the random automatic switcher uses random time to process switch connection between the host mode component and peripheral mode component, the check component detects if the handshake protocol between the D+ and D- pins of the USB interface and an external USB device meets host mode or device mode. When the inventive device checks that the external USB device is host device, the inventive device can switch into a peripheral device, and when checks that the external USB device is peripheral one, the inventive device switches into a host device.

Description

technical field [0001] The invention relates to a device and method capable of automatically switching to become a USB host or a peripheral device. The device automatically switches to become a USB host or a USB device by detecting the USB handshake protocol. Background technique [0002] The Universal Serial Bus (USB) interface is a basic interface standard for portable devices. However, the original design of USB was based on the personal computer (PC) as the divergent connection. The traditional USB was positioned between the computer and peripherals from the very beginning. An interface connected between devices, the USB peripheral devices cannot intercommunicate and interconnect each other, such as a personal digital assistant (PDA) 103, a digital camera (Camera) 104, a USB keyboard 105, and a USB mouse 106, etc., that is, through the hub ( Hub) 102a, 102b are connected with personal computer 101, such as figure 1 shown. [0003] The Universal Serial Bus Developer For...

Claims

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Application Information

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IPC IPC(8): G06F13/42
Inventor 林鹏飞庄国城
Owner MOAI ELECTRONICS
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