CN210955057U

CN210955057U - System with video and USB signal switching function

Info

Publication number: CN210955057U
Application number: CN202020323560.1U
Authority: CN
Inventors: 范延青; 梁俊杰; 张欣欣; 李彦宽
Original assignee: Yantai North Star Automation Technology Co ltd
Current assignee: Yantai North Star Automation Technology Co ltd
Priority date: 2020-03-16
Filing date: 2020-03-16
Publication date: 2020-07-07
Anticipated expiration: 2030-03-16

Abstract

The utility model relates to a system with video and USB signal switching function, which comprises an external device, an external video and USB switching module, a key module, a video processing module, a mouse and keyboard, a notebook computer mainboard and a liquid crystal display screen; the external equipment sends a video signal to the external video and USB switching module and receives a USB control signal corresponding to the video signal; the external video and USB switching module and the notebook computer mainboard receive a channel selection signal of the key module and output a video signal of a selected channel to the video processing module; the key module selects the video signal and transmits the result of the channel selection to the video processing module; the mouse and keyboard outputs control signals corresponding to the channel according to the channel selection result of the key module, and the video processing module displays the received video signals through a liquid crystal display connected with the video processing module or transmits the video signals through a network.

Description

System with video and USB signal switching function

Technical Field

The utility model relates to a notebook computer technical field, concretely relates to system with video and USB signal switch function.

Background

The universal notebook computer only has the function of outputting the local video to the local screen or the external screen, and the USB can only control the local notebook computer but cannot control the external notebook computer. In some specific application scenarios, such as a meeting or a situation where multiple notebook computers perform cooperative operations, when content on different notebook computers needs to be viewed, a participant or a cooperative worker needs to walk back and forth between different notebook computers, which increases labor cost and reduces work efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model discloses can only show local mainboard output video signal and carry out the technical problem of USB control to current notebook, provide a system with video and USB signal switch function.

The utility model provides an above-mentioned technical problem's technical scheme as follows: a system with video and USB signal switching function is characterized by comprising external equipment, an external video and USB switching module, a key module, a video processing module, a mouse and keyboard, a notebook computer mainboard and a liquid crystal display screen; the external equipment sends at least one path of video signal to the external video and USB switching module and receives a USB control signal which is output by the external video and USB switching module and corresponds to the video signal; the external video and USB switching module and the notebook computer mainboard receive a channel selection signal of the key module and output a video signal of a selected channel to the video processing module; the key module selects an external video and video signal required to be output by the USB switching module and the notebook computer mainboard, and transmits a channel selection result to the video processing module; the mouse and keyboard outputs control signals corresponding to the channel to an external video and USB switching module or a notebook computer mainboard according to the result of the channel selection of the key module, and the video processing module displays the received video signals through a liquid crystal display screen connected with the video processing module or transmits the video signals through a network.

On the basis of the technical scheme, the utility model discloses a reach the convenience of use and the stability of equipment, can also make following improvement to foretell technical scheme:

further, the video processing module comprises an HI3559 chip and two LT8619 chips, wherein an input video signal is converted into a bt.1120 signal by a front-end analog acquisition chip of the first LT8619 chip and transmitted to the HI3559 chip, the received bt.1120 signal is processed by the HI3559 chip and then output through a network or converted into an HDMI signal to be transmitted to the second LT8619 chip, and the second LT8619 chip receives the HDMI signal and converts the HDMI signal into an LVDS signal to be output to the liquid crystal display. The LT8619 chip is used for realizing the operation of self-adaption and interface matching of parameters such as input resolution of input digital signals and analog signals. By using the HI3559 chip, the functions of BT.1120 access, video processing and HDMI output are realized. The video processing module can perform various processing such as noise reduction, sharpening, image quality improvement and the like on the input signal, so that the definition of the video and the quality of video transmission are improved.

Further, an EMMC memory is arranged on the HI3559 chip and used for storing input video signals. The EMMC memory is used for respectively recording and storing according to the channel where the video signal is located, and accessing the video information in the EMMC memory through a network interface.

Further, the video signal sent by the external device is a VGA signal, a DVI signal, or an HDMI signal. The external equipment can be an external notebook computer or a computer, and can output signals meeting different interface standards according to actual conditions.

Furthermore, the external video and USB switching module inputs VGA signals to the video processing module, and the notebook computer mainboard inputs HDMI signals to the video processing module.

The utility model has the advantages that: the utility model discloses a many external equipment of local notebook operation realize the function that inserts and carry out USB control to external host computer video signal. The key module is triggered to realize the quick switching between the local computer and the external equipment, the cooperative operation of the external equipment can be realized without moving the position, and the image displayed by the current screen can be recorded and stored and transmitted through a network, so that the remote server can play on line. Therefore, the cost of human resources in cooperative work is saved, and the working efficiency is improved.

Drawings

FIG. 1 is a schematic diagram of a system with video and USB signal switching function;

fig. 2 is a schematic structural diagram of a video processing module.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1 to 2, a system with video and USB signal switching function includes an external device 10, an external video and USB switching module 20, a key module 50, a video processing module 30, a mouse and keyboard 60, a notebook computer motherboard 70 and a liquid crystal display 40; the notebook computer motherboard 70 and the liquid crystal display screen 40 form a local notebook computer, the external device 10 sends at least one video signal to the external video and USB switching module 20, can input multiple video signals according to actual use conditions, and receives a USB control signal corresponding to the video signal and output by the external video and USB switching module 20; the external video and USB switching module 20 and the notebook computer motherboard 70 receive the channel selection signal of the key module 50 and output the video signal of the selected channel to the video processing module; the key module 50 selects the video signals to be output by the external video and USB switching module 20 and the notebook computer motherboard 70, and transmits the result of the channel selection to the video processing module 30; the mouse and keyboard 60 outputs a control signal of a corresponding channel to the external video and USB switching module 20 or the notebook computer motherboard 70 according to a result of channel selection by the key module 50, and the video processing module 30 displays the received video signal through the liquid crystal display 40 connected thereto or transmits the received video signal through a network. The method comprises the steps that an output signal and an input control signal of a display of an external device 10 such as an external computer or a notebook computer are connected into an external video and USB switching module 20 through a cable, the external video and USB switching module 20 is selected through triggering a key module 50, after a channel button on the key module 50 is triggered, a video signal of a channel corresponding to the button is selected and enters a video processing module 30, the video signal is processed through the video processing module 30, and screen information of the selected external computer is displayed through a liquid crystal display screen 40, wherein the liquid crystal display screen 40 is driven through a display driving board; meanwhile, the local keyboard and mouse 60 outputs a control signal to an external computer, thereby realizing that the local keyboard and mouse 60 operates the selected external computer.

The video processing module 30 includes a HI3559 chip and two LT8619 chips, the front-end analog acquisition chip of the first LT8619 chip 301 converts an input video signal into a bt.1120 signal and transmits the bt.1120 signal to the HI3559 chip 302, the HI3559 chip 302 processes the received bt.1120 signal and outputs the processed bt.1120 signal through a network or converts the processed bt.1120 signal into an HDMI signal to transmit the HDMI signal to the second LT8619 chip 303, and the second LT8619 chip 303 receives the HDMI signal and converts the HDMI signal into an LVDS signal to output the LVDS signal to the liquid crystal display 40. The LT8619 chip is used for realizing the operation of self-adaption and interface matching of parameters such as input resolution of input digital signals and analog signals. BT.1120 signal access, video processing and HDMI output functions are realized through an HI3559 chip. The video processing module 30 can perform various processing such as noise reduction, sharpening, and image quality improvement on the input signal, thereby improving the quality of video transmission.

The HI3559 chip 302 is provided with an EMMC memory for storing input video signals. The EMMC memory respectively collects, codes and stores the video signals according to the channels where the video signals are located, and can access the stored video information through the network interface. Meanwhile, the EMMC memories with different capacities can be selected according to the use condition.

The video signal sent by the external device 10 is a VGA signal, a DVI signal, or an HDMI signal. The external device 10 may be an external notebook computer or a computer, and may output signals conforming to different interface standards according to actual situations.

The external video and USB switching module 20 inputs VGA signals to the video processing module 30, and the notebook computer motherboard 70 inputs HDMI signals to the video processing module 30.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A system with video and USB signal switching function is characterized by comprising external equipment, an external video and USB switching module, a key module, a video processing module, a mouse and keyboard, a notebook computer mainboard and a liquid crystal display screen; the external equipment sends at least one path of video signal to the external video and USB switching module and receives a USB control signal which is output by the external video and USB switching module and corresponds to the video signal; the external video and USB switching module and the notebook computer mainboard receive a channel selection signal of the key module and output a video signal of a selected channel to the video processing module; the key module selects an external video and video signal required to be output by the USB switching module and the notebook computer mainboard, and transmits a channel selection result to the video processing module; the mouse and keyboard outputs a control signal corresponding to the channel according to the result of the channel selection of the key module, and the video processing module displays the received video signal through a liquid crystal display connected with the video processing module or transmits the received video signal through a network.

2. The system of claim 1, wherein the video processing module comprises a HI3559 chip and two LT8619 chips, the first LT8619 chip converts the input video signal into a bt.1120 signal and transmits the bt.1120 signal to the HI3559 chip, the HI3559 chip processes the received bt.1120 signal and outputs the bt.1120 signal through a network or converts the bt.1120 signal into an HDMI signal to transmit the HDMI signal to the second LT8619 chip, and the second LT8619 chip receives the HDMI signal and converts the HDMI signal into an LVDS signal to output the LVDS signal to the lcd.

3. The system of claim 2, wherein the HI3559 chip is provided with an EMMC memory for storing the input video signal.

4. The system with the video and USB signal switching function according to claim 1, wherein the video signal transmitted by the external device is a VGA signal, a DVI signal or an HDMI signal.

5. The system of claim 1 or 2, wherein the external video and USB switching module inputs VGA signals to the video processing module, and the notebook motherboard inputs HDMI signals to the video processing module.