Usb接口自动切换装置

Automatic switching device of USB (Universal Serial Bus) interface

Abstract

The invention discloses an automatic switching device of a USB (Universal Serial Bus) interface. The device is provided with an external USB interface. The device comprises a USB concentrator, a combined toggle switch, first equipment and multiple pieces of second equipment, wherein the USB concentrator is provided with one upward interface and a plurality of downward interfaces; the control terminal of the combined toggle switch is connected with the universal input/ output interface of the first equipment; the multiple pieces of second equipment are independently connected with the plurality of downward interfaces of the USB concentrator; when the control terminal of the combined toggle switch inputs a first signal, switching is executed to cause the USB interface of the first equipment to be communicated with one downward interface of the UB concentrator and cause the upward interface of the USB concentrator to be communicated with the external USB interface of the device; and when the control terminal of the combined toggle switch inputs a second signal, switching is executed to cause the USB interface of the first equipment to be communicated with the upward interface of the USB concentrator. The scheme conveniently realizes the automatic switching of the USB interface.
本发明公开了一种USB接口自动切换装置,该装置具有外部USB接口,该装置包括:具有一个上行接口和多个下行接口的USB集线器、组合切换开关、第一设备和多个第二设备;组合切换开关的控制端与第一设备的通用输入/输出接口连接;多个第二设备分别与USB集线器的多个下行接口连接;组合切换开关用于:当组合切换开关的控制端输入第一信号时,执行切换使第一设备的USB接口与USB集线器的一个下行接口连通,并使USB集线器的上行接口与装置的外部USB接口连通;当组合切换开关的控制端输入第二信号时,执行切换使第一设备的USB接口与USB集线器的上行接口连通。本方案方便地实现了USB接口的自动切换。

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