A one-line secondary display method based on universal USB interface

Abstract

The present invention discloses a one-line secondary display method based on a universal USB interface, comprising a connecting line, wherein two ends of the connecting line are respectively provided with a first signal interface and a first signal output port, and a signal transmission module is further provided in the connecting line for converting an input signal of the first signal interface into an output signal of the first signal output port. The advantage of the present invention over the prior art is that it provides a one-line secondary display method based on a universal USB interface that can realize one-line display and power supply transmission by means of a USB interface.

Description

Technical Field

[0001] The present invention relates to the technical field of display signal conversion, and in particular to a one-line secondary display method based on a universal USB interface. Background Art

[0002] With the rapid development of consumer electronic products, more and more applications require secondary screen display. At present, the most common signal output mode of the host display is HDMI signal output. In the prior art, when using a universal secondary screen display, most of the hosts are required to have multiple HDMI signal output interfaces, and different display screens are connected through different HDMI signal output interfaces to realize the main and secondary screen output of the display signal.

[0003] Some solutions also include the use of external display screens through different wire groups. However, when using them, they are limited by the number of interfaces, and the universal interface of the host generally has USB. For this reason, we aim to provide an implementation method that can realize the transmission of display images and power supply signals with the help of USB interface. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the above technical defects and provide a one-line secondary display method based on a universal USB interface, which can realize one-line display and power supply transmission with the help of the USB interface.

[0005] In order to solve the above technical problems, the technical solution provided by the present invention is: a one-line secondary display method based on a universal USB interface, comprising a connecting line, wherein two ends of the connecting line are respectively provided with a first signal interface and a first signal output port, and a signal transmission module is further provided in the connecting line for converting an input signal of the first signal interface into an output signal of the first signal output port;

[0006] The input signal of the first signal interface comes from the host, the first signal interface is connected to the output port of the host, and the first signal output port is connected to the signal access port of the display terminal;

[0007] The connecting line also provides power to the display end by connecting to the host end.

[0008] Preferably, the signal transmission module is a flexible circuit board arranged in the connecting line, and a signal conversion chip is connected to the flexible circuit board, and the signal conversion chip includes a first chip and a second chip.

[0009] Preferably, the signal conversion chip includes converting a universal USB signal output by the host into an HDMI signal through a first chip, and converting the converted HDMI signal into an RGB display signal through a second chip.

[0010] Preferably, the signal conversion chip includes converting the universal USB signal output by the host into an RGB display signal through a first chip, and the converted RGB display signal is converted into an HDMI signal through a second chip.

[0011] Preferably, the first chip is an MS9122 chip or a chip of the same type, and the second chip is an MS7200 chip or a chip of the same type.

[0012] Preferably, the signal transmission module controls switching of different signal conversion methods according to the input signal type of the first signal interface.

[0013] Preferably, the connecting cable outputs power through a USB interface, and the display end has a size of 2.4 inches or 3.5 inches and is a display screen of the same type driven by a 5V power supply.

[0014] The advantages of the present invention over the prior art are: converting USB universal signals into RGB signals, thereby driving a small-sized secondary screen display, such as a 2.4-inch or 3.5-inch RGB display screen, so that power transmission, signal conversion, and screen display can be achieved with just one USB connection. This solution is universal and convenient, and can support multiple terminal host platforms such as computers, tablets, and mobile phones, which is very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The invention is a structural diagram of a one-line secondary display method based on a universal USB interface. DETAILED DESCRIPTION

[0016] References to embodiments of the present invention will now be provided in detail, one or more examples of which are described below. Each example is provided as an explanation rather than a limitation of the present invention. In fact, it will be apparent to those skilled in the art that various modifications and variations may be made to the present invention without departing from the scope or spirit of the present invention. For example, a feature illustrated or described as part of one embodiment may be used in another embodiment to produce a further embodiment.

[0017] Therefore, it is intended that the present invention covers such modifications and variations that fall within the scope of the appended claims and their equivalents. Other objects, features and aspects of the present invention are disclosed in or are obvious from the following detailed description. Those of ordinary skill in the art will appreciate that this discussion is only a description of exemplary embodiments and is not intended to limit the broader aspects of the present invention.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0019] A one-line secondary display method based on a universal USB interface includes a connecting line, wherein two ends of the connecting line are respectively provided with a first signal interface and a first signal output port, and a signal transmission module is also provided in the connecting line for converting an input signal of the first signal interface into an output signal of the first signal output port; the input signal of the first signal interface comes from a host, the first signal interface is connected to the output port of the host, and the first signal output port is connected to a signal access port of a display terminal; the connecting line also includes power supply to the display terminal by accessing the host terminal.

[0020] The signal transmission module is a flexible circuit board arranged in the connecting line, and a signal conversion chip is connected to the flexible circuit board. The signal conversion chip includes a first chip and a second chip. The signal conversion chip includes converting the universal USB signal output by the host into an HDMI signal through the first chip, and converting the converted HDMI signal into an RGB display signal through the second chip. The signal conversion chip includes converting the universal USB signal output by the host into an RGB display signal through the first chip, and converting the converted RGB display signal into an HDMI signal through the second chip.

[0021] According to different usage needs, the first chip is an MS9122 chip or a chip of the same type, and the second chip is an MS7200 chip or a chip of the same type. The signal transmission module controls the switching of different signal conversion methods according to the input signal type of the first signal interface to meet different usage needs.

[0022] When powered on, the connecting cable outputs power through the USB interface, and the display end size is 2.4 inches or 3.5 inches and the same type of display screen driven by 5V power supply.

[0023] In one embodiment:

[0024] Combined with Figure 1 As shown, a one-line secondary display method based on a universal USB interface obtains a universal USB signal output by a host and connects it to a conversion board for signal conversion, converts the universal USB signal into an HDMI signal, and converts the converted HDMI signal into an RGB display signal again, and displays the output through the output RGB display signal and the display screen.

[0025] In specific use, the conversion board is integrated with a MS9122 chip and a MS7200 chip; the USB signal is converted into an HDMI signal through the MS9122 chip; and the HDMI signal is converted into an RGB display signal through the MS7200 chip.

[0026] The conversion board includes a USB-C port and an RGB display signal output port, thereby obtaining USB interface connection and display signal output.

[0027] The host outputs a normal USB signal, which is connected to the USB connector end of the conversion board. The USB signal is converted into an HDMI signal through the conversion chip MS9122. The HDMI signal is converted into an RGB display signal through the MS7200. The RGB signal drives the small-size 2.4-inch / 3.5-inch screen display, thereby realizing that the USB line outputs the display signal to the RGB screen. The USB5V power supply also provides power to the display screen and the conversion chip. From the outside, the entire solution only needs a USB universal signal line to complete the display of the secondary screen. This solution becomes a very practical solution. As long as the terminal device supports the USB interface, it can achieve secondary screen display. The content not described in detail in this manual belongs to the prior art known to professional and technical personnel in this field.

[0028] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A one-line secondary display method based on a universal USB interface, characterized in that: It includes a connecting line, wherein two ends of the connecting line are respectively provided with a first signal interface and a first signal output port, and the connecting line is also provided with a signal transmission module for converting an input signal of the first signal interface into an output signal of the first signal output port; The input signal of the first signal interface comes from the host, the first signal interface is connected to the output port of the host, and the first signal output port is connected to the signal access port of the display terminal; The connecting line also provides power to the display end by connecting to the host end.

2. The method for providing a secondary display via a single-line interface based on a universal USB interface according to claim 1, characterized in that: The signal transmission module is a flexible circuit board arranged in the connecting line, and a signal conversion chip is connected to the flexible circuit board. The signal conversion chip includes a first chip and a second chip.

3. The method for providing a secondary display via a single-line interface based on a universal USB interface according to claim 2, characterized in that: The signal conversion chip includes converting the universal USB signal output by the host into an HDMI signal through a first chip, and converting the converted HDMI signal into an RGB display signal through a second chip.

4. The method for providing a secondary display via a single-line interface based on a universal USB interface according to claim 2, characterized in that: The signal conversion chip includes converting the universal USB signal output by the host into an RGB display signal through a first chip, and converting the converted RGB display signal into an HDMI signal through a second chip.

5. A one-line secondary display method based on a universal USB interface according to claim 3 or 4, characterized in that: The first chip is an MS9122 chip or a chip of the same type, and the second chip is an MS7200 chip or a chip of the same type.

6. The method for providing a secondary display via a single-line interface based on a universal USB interface according to claim 5, characterized in that: The signal conversion module controls switching of different signal conversion methods according to the input signal type of the first signal interface.

7. The one-line secondary display method based on a universal USB interface according to claim 1, characterized in that: The connecting line outputs power through a USB interface, and the display end size is 2.4 inches or 3.5 inches and a display screen of the same type driven by a 5V power supply.

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