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Switching circuit, intelligent switching device and switching method of dual usb interfaces

A technology of USB interface and switching circuit, which is used in electrical digital data processing, instruments, etc., and can solve problems such as failure of normal communication

Active Publication Date: 2021-05-14
SHENZHEN EXCELSECU DATA TECH
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Problems solved by technology

[0005] The purpose of the present invention is to provide a switching circuit, an intelligent switching device and a switching method of dual USB interfaces, aiming to solve the problem of the two USB interfaces being inserted into the host at the same time when the two USB interfaces are inserted in the existing product technology with two USB interfaces. will receive the signal from the host, and thus cannot communicate normally

Method used

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  • Switching circuit, intelligent switching device and switching method of dual usb interfaces
  • Switching circuit, intelligent switching device and switching method of dual usb interfaces
  • Switching circuit, intelligent switching device and switching method of dual usb interfaces

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[0020] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and 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.

[0021] The switching circuit, the intelligent switching device and the switching method of the above-mentioned dual USB interfaces include a first USB interface and a second USB interface, the main control module outputs a control signal according to the judgment signals output by the two voltage dividing modules, and the control gating module only communicates with the second USB interface. A USB interface for communication or a second USB interface for communication.

[0022] figure 1 The module structure of the switching circuit of the dual USB interface provided by the embodiment of the presen...

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Abstract

The invention belongs to the technical field of electronic circuits, and provides a switching circuit with dual USB interfaces, an intelligent switching device and a switching method, including a first USB interface and a second USB interface, and the main control module outputs control signals according to the judgment signals output by the two voltage dividing modules. signal, the control strobe module only communicates with the first USB interface or the second USB interface, so it solves the existing problems in the product technology with two USB interfaces when the two USB interfaces are inserted into the host at the same time, the two The USB interface will receive the host signal, so it cannot communicate normally.

Description

technical field [0001] The invention belongs to the technical field of electronic circuits, and in particular relates to a switching circuit of dual USB interfaces, an intelligent switching device and a switching method. Background technique [0002] Nowadays, for some products with two USB interfaces, such as KEY products, including second-generation KEY, Bluetooth KEY, audio KEY or other similar products with two USB interfaces, the two USB interfaces are connected to the same on the same USB interface of a Microcontroller Unit (MCU). When the two USB ports of the product are connected to different ports of a personal computer (PC) at the same time, since the two ports of the PC will continuously send signals to the MCU of the product through the two USB ports of the product at the same time, resulting in The product cannot be used normally, and it can also be seen from the device manager on the PC that the access device has been repeatedly refreshed. [0003] Among them...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/40G06F13/42G06F13/20
CPCG06F13/20G06F13/4063G06F13/4204
Inventor 陈柳章
Owner SHENZHEN EXCELSECU DATA TECH
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