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OTG device

A MOS tube and USB interface technology, applied in the field of OTG devices, can solve the problem of only being used as a master device or only as a slave device, and achieve the effect of solving limitations and improving compatibility

Active Publication Date: 2014-03-26
XIAN TCL SOFTWARE DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to resource and cost constraints, the current use of OTG has certain limitations. Many OTG controllers only support one OTG port, but an OTG port can only be used as a master device or a slave device at the same time.

Method used

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Embodiment Construction

[0037] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0038] The invention provides an OTG device, which supports OTG technology and can be applied to consumer electronic products, various mobile electronic equipment, office equipment and the like.

[0039] refer to figure 1 , figure 1 It is a functional block diagram of a preferred embodiment of the OTG device of the present invention.

[0040] In a preferred embodiment of the present invention, the OTG device includes a first USB interface 10 , a second USB interface 20 , an OTG controller 30 and a USB channel switching circuit 40 . The OTG controller 30 includes an interface state detection terminal GPIO1 , a control signal output terminal GPIO2 , a device detectio...

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PUM

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Abstract

The invention discloses an OTG device. The OTG device comprises a first USB port, a second USB port, an OTG controller and a USB channel switching circuit. The OTG device outputs control signals to the USB channel switching circuit through the OTG controller according to the state of the second USB port, and the USB channel switching circuit controls connection of the first USB port, or rapid in-turn connection of the first USB port and the second USB port. When the first USB port and the second USB port are connected with a USB slave device and a USB master device respectively, the USB channel switching circuit controls the first USB port and the second USB port to be connected rapidly in turn so that the OTG device can serve as a master device, and can also serve as a slave device, therefore, the OTG device can achieve the functions of the master device and the functions of the slave device at the same time through an OTG port, the compatibility of the OTG device is improved, and the problem of OTG use limitation is solved.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to an OTG device. Background technique [0002] OTG (On-The-Go) technology is a technology developed in recent years, which is mainly used in the connection between various devices or mobile devices for data exchange. OTG technology is a technology that realizes data transmission between slave devices without a host (that is, a master device, HOST). It is possible to communicate directly. For example, the current mobile phone and PAD with OTG function can be used as the host device (HOST) to read the data in the USB peripheral (such as U disk), and can also be used as the slave device (SLAVE) to read data from it with the PC. [0003] However, due to resource and cost constraints, the current use of OTG has certain limitations. Many OTG controllers only support one OTG port, but one OTG port can only be used as a master device or a slave device at the same time. Contents o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K19/0175
Inventor 刘玉斌孟晓鹏郭璇
Owner XIAN TCL SOFTWARE DEV