CN211742610U

CN211742610U - Split screen display system

Info

Publication number: CN211742610U
Application number: CN202020476118.2U
Authority: CN
Inventors: 吴柏村; 刘远贵; 王倩; 聂卓为
Original assignee: Shenzhen Emdoor Information Co ltd
Current assignee: Shenzhen Emdoor Information Co ltd
Priority date: 2020-04-03
Filing date: 2020-04-03
Publication date: 2020-10-23
Anticipated expiration: 2030-04-03

Abstract

The utility model relates to an electronic display screen field especially relates to a split screen display system, including control panel module, mainboard module and LCD screen module, the control panel module passes through mainboard module and LCD screen module and connects, and the control panel module is used for receiving multimedia signal and control mainboard module, control panel module include the MCU unit, the HDMI interface unit and the VGA interface unit that link to each other with the MCU unit respectively, and mainboard module includes the controller that comprises CPU and GPU, display chip unit and MIPI LVDS EDP interface unit that link to each other with the controller respectively. Adopt the utility model discloses a pure hardware circuit technical scheme, through hardware circuit, can turn into MIPI or LVDS or EDP video signal of the same kind and divide the screen display on a liquid crystal display with multichannel HDMI and VGA video signal, need not carry on the third party and divide screen display software, convenience simple to use.

Description

Split screen display system

Technical Field

The utility model relates to an electronic display screen field especially relates to a split screen display shows system.

Background

The prior split-screen display is realized by designing third-party tool software generally, but the design and development of the split-screen display software can consume a large amount of manpower and financial resources, and the split-screen display software can also occupy a large amount of system resources.

The HDMI and VGA interface have high transmission rate, are reliable and stable, and are widely used at present, but the mainstream liquid crystal display module in the market at present basically stays in the interface standard of MIPI or LVDS or EDP signals, so a system is needed to convert the input HDMI and VGA video signals into MIPI or LVDS or EDP video signals for displaying images on the liquid crystal display module, and the requirement of multi-path HDMI and VGA signal split-screen display needs to be met.

SUMMERY OF THE UTILITY MODEL

To the problem that the background art faces, the utility model aims to provide a split screen display system, adopt the utility model discloses a pure hardware circuit technical scheme can realize that the split screen shows video image information in the system, through the hardware circuit, can turn into multichannel HDMI and VGA video signal and divide the screen display to show on a liquid crystal display with MIPI or LVDS or EDP video signal all the way, need not carry on the third party and divide the screen display software, convenience simple to use.

In order to achieve the above object, the utility model adopts the following technical means:

the utility model provides a split screen display system, includes control panel module, mainboard module and LCD screen module, the control panel module passes through the mainboard module with the LCD screen module is connected, the control panel module is used for receiving multimedia signal and control the mainboard module, the control panel module includes MCU unit, the HDMI interface unit and the VGA interface unit that link to each other with the MCU unit respectively, the mainboard module includes the controller of compriseing CPU and GPU, the display chip unit and the MIPI LVDS EDP interface unit that link to each other with the controller respectively.

Further, the HDMI unit has a plurality of HDMI multimedia signal input ends, and the VGA interface unit has a plurality of VGA multimedia signal input ends.

Furthermore, the control panel module also comprises an audio IC unit and an LED indicator light unit which are respectively connected with the MCU unit.

Furthermore, the mainboard module also comprises an audio chip unit and an audio interface unit which are respectively connected with the controller.

Furthermore, the main board module further comprises a memory unit and a hard disk unit which are respectively connected with the controller.

Further, the mainboard module further comprises a BIOS chip unit and an EC chip unit which are respectively connected with the controller.

Furthermore, the mainboard module also comprises a network chip unit connected with the controller and a network interface unit connected with the network chip unit.

Furthermore, the mainboard module further comprises a power supply IC unit connected with the controller and a power supply interface unit connected with the power supply IC unit.

Furthermore, the MCU unit comprises a receiving subunit, a detecting subunit and a first processing subunit, the GPU unit comprises an acquiring subunit, a second processing subunit, a dividing subunit, a splicing subunit and a converting subunit, the receiving subunit is connected with the first processing subunit through the detecting subunit, and the acquiring subunit, the dividing subunit, the splicing subunit and the converting subunit are all connected with the second processing subunit.

Furthermore, the control panel module is connected with the mainboard module through the MCU unit and the audio IC unit respectively, the mainboard module is connected with the LCD module through the MIPI/LVDS/EDP interface unit and the audio interface unit respectively, and the LCD module is an MIPI or LVDS or EDP LCD module.

Compared with the prior art, the utility model discloses following beneficial effect has: adopt the utility model discloses a pure hardware circuit technical scheme can realize dividing screen display video image information in the system, through hardware circuit, can turn into MIPI or LVDS or EDP video signal of the same kind and divide screen display to show on a liquid crystal display with multichannel HDMI and VGA video signal, need not carry on the third party and divide screen display software, convenience simple to use.

Drawings

Fig. 1 is a block diagram of the present invention.

Detailed Description

For better understanding of the objects, structures, features, and functions of the present invention, reference should now be made to the drawings and detailed description of the invention.

Referring to fig. 1, a split-screen display system includes a control panel module, a main board module and a liquid crystal module, the control panel module is connected to the liquid crystal module through the main board module, the control panel module is used for receiving multimedia signals and controlling the main board module, the control panel module includes an MCU unit, an HDMI interface unit and a VGA interface unit respectively connected to the MCU unit, and the main board module includes a controller composed of a CPU and a GPU, a display chip unit and an MIPI/LVDS/EDP interface unit respectively connected to the controller.

The control panel module is also used for generating a split-screen display control signal according to the split-screen display instruction, controlling the main board module to process the received multi-path HDMI and VGA multimedia signals and converting the multi-path HDMI and VGA multimedia signals into a path of MIPI, LVDS or EDP liquid crystal display signals. The main board module is used for processing a plurality of paths of HDMI and VGA multimedia signals according to the split screen display control signals sent by the control board module, converting the signals into a path of MIPI or LVDS or EDP liquid crystal screen display signals and sending the signals to the liquid crystal screen module. The liquid crystal screen module is used for receiving and displaying a path of MIPI or LVDS or EDP liquid crystal screen display signal sent by the mainboard module.

HDMI, i.e. High Definition Multimedia Interface (HDMI), is a digital video/audio Interface technology, and is a special-purpose digital Interface suitable for video transmission, which can simultaneously transmit audio and video signals, and has a maximum data transmission speed of 2.25GB/s, and does not require digital-to-analog or analog-to-digital conversion before signal transmission.

VGA (video Graphics array) is a video transmission standard which is promoted by IBM in 1987 along with a PS/2 machine, has the advantages of high resolution, high display speed, rich colors and the like, and is widely applied to the field of color displays. Hot plug is not supported, and audio transmission is not supported.

The MCU, i.e., a Microcontroller Unit (Microcontroller Unit), also called a Single chip microcomputer (Single chip microcomputer) or a Single chip microcomputer, is a chip-level computer formed by appropriately reducing the frequency and specification of a Central processing Unit (Central processor Unit) and integrating peripheral interfaces such as a memory (memory), a counter (Timer), a USB, an a/D converter, a UART, a PLC, a DMA, and the like, and even an LCD driving circuit, on a Single chip, and performing different combination control for different applications. In this embodiment, the MCU unit is an STM32L100RB microcontroller, and is configured to send multiple paths of HDMI and VGA multimedia signals to the motherboard module, and is configured to generate a split-screen display control signal according to a split-screen display instruction, and control the motherboard module to process and convert the received multiple paths of HDMI and VGA multimedia signals into a path of MIPI or LVDS or EDP liquid crystal display signals.

The CPU, i.e., a Central Processing Unit (CPU), is a core accessory of electronic equipment such as a computer and an intelligent terminal, and mainly has functions of interpreting instructions of the electronic equipment and Processing data in the electronic equipment, and is a core component that reads the instructions, decodes the instructions, and executes the instructions in the electronic equipment. In this embodiment, the CPU unit is configured to receive the split-screen display control signal sent by the control panel module, and send the split-screen display control signal to the GPU unit.

A GPU, i.e. a Graphics Processing Unit (Graphics Processing Unit), also called a display core, a visual processor, and a display chip, is a microprocessor that is specially used for image operation on a personal computer, a workstation, a game machine, and some mobile devices (e.g., a tablet computer, a smart phone, etc.). The display control method is used for converting and driving display information required by an electronic equipment system, providing a line scanning signal for a display and controlling the display to be correct, is an important element for connecting the display and a mainboard of the electronic equipment, and is also one of important equipment for man-machine conversation. In this embodiment, the GPU unit is configured to receive multiple paths of HDMI and VGA multimedia signals sent by the control panel module and the split-screen display control signal sent by the CPU unit, and is further configured to receive the split-screen display control signal and process and convert the multiple paths of HDMI and VGA multimedia signals into one path of MIPI, LVDS, or EDP liquid crystal display signal.

MIPI is a Mobile Industry Processor Interface (Mobile Industry Processor Interface), which is an open standard and a specification established for Mobile application processors by the MIPI alliance.

LVDS, i.e. Low-Voltage Differential Signaling (Low-Voltage Differential Signaling), is a level standard, and an LVDS interface, also called as RS-644 bus interface, is a data transmission and interface technology that appeared in the 90 s of the 20 th century. LVDS (low voltage differential signaling), namely low-voltage differential signals, adopts extremely low voltage swing high-speed differential transmission data, can realize point-to-point or point-to-multipoint connection, has the characteristics of low power consumption, low error rate, low crosstalk, low radiation and the like, and can be a copper PCB (printed circuit board) connecting wire or a balance cable as a transmission medium. LVDS is finding increasingly widespread use in systems requiring high signal integrity, low jitter, and common mode characteristics.

EDP is an EDP interface (Embedded DisplayPort), which is a fully digital interface based on DisplayPort architecture and protocol, can use a simpler connector and fewer pins to transmit high-resolution signals, and can realize simultaneous transmission of multiple data.

The MIPI/LVDS/EDP interface unit in this embodiment is configured to send a display signal of the MIPI, LVDS or EDP liquid crystal display that needs to be displayed to the liquid crystal display module.

Referring to fig. 1, in the embodiment, the HDMI unit has a plurality of HDMI multimedia signal input terminals for receiving a plurality of HDMI multimedia input signals, and the VGA interface unit has a plurality of VGA multimedia signal input terminals for receiving a plurality of VGA multimedia input signals.

Referring to fig. 1, the control panel module further includes an audio IC unit and an LED indicator unit respectively connected to the MCU unit, the audio IC unit is configured to separate an audio signal from multiple HDMI and VGA multimedia signals and send the audio signal to the motherboard module, and the LED indicator unit is configured to indicate a working state of the control panel module.

Referring to fig. 1, the main board module further includes an audio chip unit and an audio interface unit respectively connected to the controller, the audio chip unit is configured to receive and process the audio signal sent by the control board module and send the audio signal to the audio interface unit, and the audio interface unit is configured to send the audio signal to be played to the power amplifier device.

Referring to fig. 1, the motherboard module further includes a memory unit and a hard disk unit respectively connected to the controller, the memory unit is configured to store temporary data generated when the GPU processes a multimedia signal, and the hard disk unit is configured to store the multimedia signal processed by the GPU.

Referring to fig. 1, the motherboard module further includes a BIOS chip unit and an EC chip unit respectively connected to the controller, where the BIOS chip unit is configured to control input and output devices of the motherboard module, and the EC chip unit is configured to control start, standby, and sleep states of the motherboard module.

Referring to fig. 1, the motherboard module further includes a network chip unit connected to the controller, and a network interface unit connected to the network chip unit, where the network chip unit and the network interface unit are used to implement data exchange and transmission in the motherboard module.

Referring to fig. 1, the motherboard module further includes a power IC unit connected to the controller, and a power interface unit connected to the power IC unit, where the power IC unit and the power interface unit are used to supply power to the motherboard module.

Referring to fig. 1, the MCU unit includes a receiving subunit, a detecting subunit, and a first processing subunit, the GPU unit includes an acquiring subunit, a second processing subunit, a dividing subunit, a splicing subunit, and a converting subunit, the receiving subunit is connected to the first processing subunit through the detecting subunit, and the acquiring subunit, the dividing subunit, the splicing subunit, and the converting subunit are all connected to the second processing subunit.

The receiving subunit is used for receiving the split-screen display instruction, the detecting subunit detects the resolutions of the multiple HDMI and VGA multimedia signals received by the HDMI interface unit and the VGA interface unit, and the first processing subunit calculates the target resolutions of the multiple HDMI/VGA multimedia signals according to the split-screen display instruction and the resolutions of the multiple HDMI/VGA multimedia signals and generates the split-screen display control signal.

The acquisition subunit is used for receiving a plurality of paths of HDMI/VGA multimedia signals and a split-screen display control signal, the segmentation subunit is used for segmenting the acquired plurality of paths of HDMI/VGA multimedia signals into a plurality of HDMI/VGA image data packets, the second processing subunit is used for adjusting the resolution of image data in the segmented plurality of HDMI/VGA image data packets according to the target resolution of the plurality of paths of HDMI/VGA multimedia signals in the split-screen display control signal, the conversion subunit converts the plurality of HDMI/VGA image data packets with the adjusted resolution into a plurality of multilink RGB signals, the splicing subunit performs parallel splicing and synchronous processing on the multilink RGB signals to generate a multilink RGB signal, and the conversion subunit is used for converting the multilink RGB signal into a path of MIPI or LVDS or EDP liquid crystal display signal, and transmitting to the MIPI/LVDS/EDP interface unit.

Referring to fig. 1, the control board module is connected to the motherboard module through the MCU unit and the audio IC unit, the motherboard module is connected to the lcd module through the MIPI/LVDS/EDP interface unit and the audio interface unit, and the lcd module is an MIPI, LVDS or EDP lcd module.

The above detailed description is only for the purpose of illustrating the preferred embodiments of the present invention, and not for the purpose of limiting the scope of the present invention, therefore, all the equivalent technical changes applying the present specification and the drawings are included in the scope of the present invention.

Claims

1. A split screen display system, comprising: including control panel module, mainboard module and LCD screen module, the control panel module passes through the mainboard module with the LCD screen module is connected, the control panel module is used for receiving multimedia signal and control the mainboard module, the control panel module includes MCU unit, the HDMI interface unit and the VGA interface unit that link to each other with the MCU unit respectively, the mainboard module includes the controller that comprises CPU and GPU, display chip unit and MIPI LVDS EDP interface unit that link to each other with the controller respectively.

2. The split-screen display system of claim 1, wherein: the HDMI unit has a plurality of HDMI multimedia signal input ends, the VGA interface unit has a plurality of VGA multimedia signal input ends.

3. The split-screen display system of claim 2, wherein: the control panel module also comprises an audio IC unit and an LED indicator light unit which are respectively connected with the MCU unit.

4. The split-screen display system of claim 3, wherein: the mainboard module also comprises an audio chip unit and an audio interface unit which are respectively connected with the controller.

5. The split-screen display system of claim 4, wherein: the mainboard module also comprises a memory unit and a hard disk unit which are respectively connected with the controller.

6. The split-screen display system of claim 5, wherein: the mainboard module also comprises a BIOS chip unit and an EC chip unit which are respectively connected with the controller.

7. The split-screen display system of claim 6, wherein: the mainboard module also comprises a network chip unit connected with the controller and a network interface unit connected with the network chip unit.

8. The split-screen display system of claim 7, wherein: the mainboard module also comprises a power supply IC unit connected with the controller and a power supply interface unit connected with the power supply IC unit.

9. The split-screen display system of claim 8, wherein: the GPU unit comprises an acquisition subunit, a second processing subunit, a segmentation subunit, a splicing subunit and a conversion subunit, the reception subunit is connected with the first processing subunit through the detection subunit, and the acquisition subunit, the segmentation subunit, the splicing subunit and the conversion subunit are connected with the second processing subunit.

10. The split-screen display system of claim 9, wherein: the control panel module is connected with the mainboard module through the MCU unit and the audio IC unit respectively, the mainboard module is connected with the LCD module through the MIPI/LVDS/EDP interface unit and the audio interface unit respectively, and the LCD module is an MIPI or LVDS or EDP LCD module.