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com port adapter for connecting usb devices

An adapter and port technology, applied in the field of COM port adapters

Inactive Publication Date: 2018-06-26
SHENXUN COMP KUNSHAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no technology to use the COM port to transmit data to the USB device

Method used

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  • com port adapter for connecting usb devices
  • com port adapter for connecting usb devices

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no. 1 example

[0025] In order to achieve the above purpose, the COM port adapter 10 for connecting USB devices provided by the present invention, in the first embodiment, includes:

[0026] COM interface 11, in order to connect with COM port 20;

[0027] USB interface 12, in order to connect with USB device 30;

[0028] A signal conversion circuit 13 is connected to the COM interface 11 for mutual conversion of RS232 signals and USB signals;

[0029] A voltage level conversion circuit 14, connected to the signal conversion circuit 13 and the USB interface 12, converts the voltage level output by the COM port 20 into the working voltage level of the USB device 30;

[0030] The power supply circuit 15 is respectively connected to the signal conversion circuit 13 and the voltage level conversion circuit 14 for supplying power to the signal conversion circuit 13 and the voltage level conversion circuit 14 .

[0031] Visible, utilize the COM port adapter 10 of USB device of the present inventi...

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Abstract

The invention relates to a COM port adapter for connecting a USB (universal serial bus) device. The COM port adapter comprises a COM interface used for being connected with a COM port, a USB interface used for being connected with a USB device, a signal converting circuit which is connected with the COM interface and is used for the mutual conversion of an RS232 signal and a USB signal, a voltage level converting circuit which is connected with the signal converting circuit and the USB interface and is used for converting the voltage level outputted by the COM port to the working voltage level of the USB device, and a power supply circuit which is respectively connected with the signal converting circuit and the voltage level converting circuit and is used for supplying power for the signal converting circuit and the voltage level converting circuit. The utilization of the COM port is realized, and data is transmitted between the COM port and the USB device.

Description

【Technical field】 [0001] The invention relates to an adapter, in particular to a COM port adapter for connecting USB devices. 【Background technique】 [0002] With the development and progress of science and technology, electronic products are more and more widely used in homes and offices, especially electronic products such as desktop computers, notebook computers, and tablet computers, which have become indispensable tools in people's lives. [0003] Many computer products are equipped with COM ports (serial communication ports), and the utilization rate of COM ports is usually not high, and many devices usually use USB (Universal Serial BUS, Universal Serial Bus) interface for data transmission. of. At present, there is no technology to use the COM port to transmit data to the USB device. [0004] In view of this, it is necessary to develop a COM port adapter for connecting USB devices to solve the above problems. 【Content of invention】 [0005] Therefore, the object...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/40
Inventor 蒋林锋
Owner SHENXUN COMP KUNSHAN
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