CN210578885U

CN210578885U - Multi-channel signal switcher

Info

Publication number: CN210578885U
Application number: CN201921967192.8U
Authority: CN
Inventors: 李立
Original assignee: Jiangsu Liliu Technology Co ltd
Current assignee: Jiangsu Liliu Technology Co ltd
Priority date: 2019-11-14
Filing date: 2019-11-14
Publication date: 2020-05-19
Anticipated expiration: 2029-11-14

Abstract

A multi-channel signal switcher comprises an MCU main chip, a plurality of video signal conversion modules connected with the MCU main chip, a data bus connected with the video conversion modules, an HDMI output interface connected with the data bus, and an input interface corresponding to the video signal conversion modules. The utility model discloses multichannel signal switch has assembled the video input interface of multiple difference, satisfies multiple video signal's input, conversion and output, realizes unified management and switching through multiple control mode, and unified output HDMI digital signal satisfies the access of the vast majority of mainstream display device on the existing market.

Description

Multi-channel signal switcher

[ technical field ] A method for producing a semiconductor device

The utility model relates to a video signal switching equipment field specifically is a multichannel signal switch.

[ background of the invention ]

Video signal interfaces on the market are various, and different signal interfaces need to change a signal output format into a format required by a user through a signal converter due to different physical formats and signal protocols. The most popular signal converter at present converts some interface signal into an HDMI interface signal. If only one signal source is available in the application scene, only one converter is needed. But if there are multiple signal sources, multiple different kinds of signal converters are needed. After the signal converters are converted into HDMI signals, a multi-channel HDMI signal switcher is additionally connected, and one signal is selected by the HDMI signal switcher to be output to the display device. In the application scene, the device has multiple types, high manufacturing cost and long signal transmission path, and is easy to cause attenuation and instability.

It is therefore seen that there is a need in the art to provide a multi-channel signal switch that satisfies a unified switching management.

[ Utility model ] content

To the above problem, the utility model discloses multichannel signal switch has assembled the video input interface of multiple difference, satisfies multiple video signal's input, conversion and output, realizes unified management and switching through multiple control mode, and unified output HDMI digital signal satisfies the access of the overwhelming majority of mainstream display devices on the existing market.

In order to solve the above problem, the utility model discloses multichannel signal switch includes MCU main chip, a plurality of video signal conversion module of being connected with MCU main chip, the data bus who is connected with video conversion module, with data bus connection's HDMI output interface, with the corresponding input interface of video signal conversion module. Still be connected with WIFI module, NB thing networking management module, button switching module and serial ports management module on the MCU main chip, realize four kinds of different control modes through four kinds of modules respectively, video signal is by one of them input interface input to convert into HDMI digital signal through corresponding video signal conversion module, later transmit to HDMI output interface through data bus and export.

Furthermore, the MCU main chip adopts an ST32 series ARM chip, and is connected with the enable pins of the video signal conversion modules through GPIO ports of the MCU main chip and used for controlling the switching of the video signal conversion modules.

Furthermore, the video signal conversion module comprises a DVI to HDMI conversion module, a VGA to HDMI conversion module, a CVBS to HDMI conversion module, a DP to HDMI conversion module and a miniDP to HDMI conversion module.

Further, the input interface includes a DVI input interface, a VGA input interface, a CVBS input interface, a DP input interface, and a miniDP input interface.

Further, the WIFI module adopts a high-pass AR9331 chip, and the MCU main chip is controlled and switched to the video signal conversion module through the APP of mobile devices such as mobile phones.

Furthermore, the NB internet of things management module adopts an ZSN210 chip, and remote network access can be realized by inserting an NB-IOT SIM card, and control and switching of the MCU main chip to the video signal conversion module are realized.

Furthermore, a key is connected to the key switching module, the key switching module connects the key with a GPIO pin of the MCU main chip, and the signal selection polling program of the MCU main chip is triggered by controlling the connection of the pin.

Furthermore, the serial port management module adopts an MAX232 chip, is connected to a PC through an RS232 control interface, and realizes the control of the MCU main chip through software on the PC, so as to realize the control and switching of the video signal conversion module.

Furthermore, the utility model discloses multichannel signal switch has assembled the video input interface of multiple difference, satisfies multiple video signal's input, conversion and output, realizes unified management and switching through multiple control mode, and unified output HDMI digital signal satisfies the access of the overwhelming majority of mainstream display device on the existing market.

[ description of the drawings ]

Fig. 1 is a schematic diagram of the multi-channel signal switch according to the present invention.

[ detailed description ] embodiments

The directional terms of the present invention, such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", etc., are only directions in the drawings, and are only used for explaining and explaining the present invention, but not for limiting the scope of the present invention.

Referring to fig. 1, the structure schematic diagram of the multi-channel signal switch of the present invention is shown, which comprises a MCU main chip, a plurality of video signal conversion modules connected with the MCU main chip, a data bus connected with the video conversion modules, and an HDMI output interface connected with the data bus. The video signal conversion module changes the HDMI module for DVI respectively, VGA changes the HDMI module, CVBS changes the HDMI module, DP changes the HDMI module, miniDP changes the HDMI module, wherein DVI changes to be connected with DVI input interface on the HDMI module, VGA changes to be connected with VGA input interface on the HDMI module, CVBS changes to be connected with CVBS input interface on the HDMI module, DP changes to be connected with DP input interface on the HDMI module, miniDP changes to be connected with miniDP input interface on the HDMI module, in addition, still be connected with an HDMI input interface on the data bus. The video signal is input by one of the input interfaces, converted into an HDMI digital signal through the corresponding video signal conversion module, and then transmitted to the HDMI output interface through the data bus to be output. Wherein DVI changes the HDMI module and directly is connected to the HDMI data bus through circuit design on the 25 pin pins of DVI, DVI signal can be directly lossless converts the HDMI digital signal into, wherein VGA changes the HDMI module and adopts the little MS9282 chip of macrocrystal to convert the analog signal of VGA format into HDMI digital signal, wherein CVBS changes the HDMI module and adopts the little MS1858 chip of macrocrystal to convert the analog signal of CVBS format into HDMI digital signal, wherein DP changes the HDMI module and miniDP changes the HDMI module and all adopts the PS171 chip to convert the digital signal of DP format and miniDP format into HDMI digital signal respectively.

The MCU main chip can adopt an ST32 series ARM chip, and is connected with the enabling pins of the video signal conversion modules through GPIO ports and used for controlling the switching of the video signal conversion modules. The MCU main chip is connected with a WIFI module, an NB internet of things management module, a key switching module and a serial port management module, and four different control modes are respectively realized through the four modules. The WIFI module adopts a high-pass AR9331 chip, and the MCU main chip controls and switches the video signal conversion module through APP of mobile equipment such as a mobile phone. The NB-IOT management module adopts an ZSN210 chip, network remote access can be realized by inserting an NB-IOT SIM card, and the MCU main chip can control and switch the video signal conversion module. The key switching module is connected with a key, the key is connected with a GPIO pin of the MCU main chip by the key switching module, and a signal selection polling program of the MCU main chip is triggered by controlling the connection of the pin. The serial port management module adopts an MAX232 chip and is connected to a PC through an RS232 control interface, and the MCU main chip is controlled through software on the PC, so that the control and switching of the video signal conversion module are realized. The MCU main chip is also connected with a power conversion module, and a 220V AC power supply is converted into a 5V DC power supply through the power conversion module to supply power to the equipment. The utility model discloses multichannel signal switch has assembled the video input interface of multiple difference, satisfies multiple video signal's input, conversion and output, realizes unified management and switching through multiple control mode, and unified output HDMI digital signal satisfies the access of the vast majority of mainstream display device on the existing market.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a multichannel signal switch, its characterized in that, multichannel signal switch includes a MCU main chip, a plurality of video signal conversion module of being connected with MCU main chip, the data bus of being connected with video conversion module, the HDMI output interface of being connected with data bus, still be connected with WIFI module, NB thing networking management module, button switching module and serial ports management module on the MCU main chip, realize four kinds of different control modes through four kinds of modules respectively, video signal is by certain input interface input wherein to turn into HDMI digital signal through corresponding video signal conversion module, later export to HDMI output interface through data bus transmission.

2. The multi-channel signal switch as claimed in claim 1, wherein the MCU master chip is an ARM chip of ST32 series, and is connected to the enable pins of the video signal conversion modules via its GPIO ports for controlling the switching of the video signal conversion modules.

3. The multi-channel signal switch of claim 1, wherein the video signal conversion module comprises a DVI to HDMI module, a VGA to HDMI module, a CVBS to HDMI module, a DP to HDMI module, and a miniDP to HDMI module.

4. The multi-channel signal switcher of claim 1, wherein the input interface comprises a DVI input interface, a VGA input interface, a CVBS input interface, a DP input interface, a miniDP input interface.

5. The multi-channel signal switch of claim 1, wherein the WIFI module employs a high-pass AR9331 chip, and the control and switching of the MCU main chip to the video signal conversion module are implemented through APP of a mobile device such as a mobile phone.

6. The multi-channel signal switcher of claim 1, wherein the NB internet of things management module employs ZSN210 chip, remote network access can be realized by inserting NB-IOT SIM card, and control and switching of the MCU main chip to the video signal conversion module are realized.

7. The multi-channel signal switcher of claim 1, wherein the key switch module is connected with a key, the key switch module connects the key with a GPIO pin of the MCU main chip, and the signal selection polling procedure of the MCU main chip is triggered by controlling the pin to be turned on.

8. The multi-channel signal switch of claim 1, wherein the serial port management module employs a MAX232 chip and is connected to the PC through an RS232 control interface, and the MCU main chip is controlled by software on the PC, so as to control and switch the video signal conversion module.