Multi-screen control circuit and multi-screen display

Abstract

The utility model discloses a multi-screen control circuit and a multi-screen display, wherein the multi-screen control circuit includes a connection port, at least two main control units, and at least two screen interfaces; any two of the main control units are electrically connected, the connection port is electrically connected to any of the main control units, one of the main control units is connected to one of the screen interfaces, and the screen interface is connected to one screen. A main control unit receives a signal transmitted by the connection port, and outputs it to the screen interface and another main control unit accordingly; the other main control unit transmits the signal to the screen interface, and the screen interface is connected to the display screen, thereby achieving the purpose of single-port input signal and multi-screen display signal information; in addition, if the user wants to expand the screen again for display, the number of main control units can be expanded according to the number of screens currently required to be connected, so as to achieve the purpose of multi-screen display and increase scalability.

Description

Technical Field

[0001] The present application relates to the technical field of multi-screen displays, and in particular to a multi-screen control circuit and a multi-screen display. Background Art

[0002] In daily life, the display screen is set to a single one. In order to facilitate the user's needs, the video signal output by the host is usually transmitted to other screens for display, so as to show more screen signal information.

[0003] In the existing multi-screen display method, multiple connection cables are used to connect to the signal output port on the same host, and the other end of the connection cable is output to the screen, thereby completing the multi-screen display. However, the number of expandable screens corresponds to the number of output ports of the host, and the subsequent expandability is poor. Utility Model Content

[0004] The technical problem to be solved by the present application is that in the existing multi-screen display method, multiple connection cables are used to connect to the signal output ports on the same host, and the other ends of the connection cables are output to the screen, thereby completing the multi-screen display. However, the number of expandable screens corresponds to the number of output ports of the host, and the subsequent expandability is poor.

[0005] In order to solve the above technical problems or at least partially solve the above technical problems, the present application provides a multi-screen control circuit and a multi-screen display.

[0006] In a first aspect, the utility model discloses a multi-screen control circuit, which includes a connection port, at least two main control units, and at least two screen interfaces;

[0007] Any two of the main control units are electrically connected, the connection port is electrically connected to any of the main control units, one of the main control units is connected to one of the screen interfaces, and the screen interface is connected to one screen.

[0008] Preferably, the connection port includes a PD control unit and at least one port, and the port is electrically connected to the PD control unit; the port adopts any one of TYPE-C and DP.

[0009] Preferably, the main control unit includes a screen control unit and a power supply unit;

[0010] The PD control unit is connected to the screen control unit and the power supply unit respectively, and the power supply unit is connected to the screen control unit.

[0011] Preferably, the screen control unit includes a display driver chip, and the display driver chip is connected to the screen interface.

[0012] Preferably, the display driver chip adopts any model chip of the RTD27X5 series.

[0013] Preferably, the screen control unit includes a screen signal input terminal, a screen extension connection terminal and a screen signal output terminal, and the display driving chip is connected to the screen signal input terminal, the screen extension connection terminal and the screen signal output terminal.

[0014] Preferably, the PD control unit includes a PD signal output terminal and a power supply output terminal;

[0015] The screen signal input terminal is connected to the PD signal output terminal or the screen signal input terminal of another screen control unit, and the power supply output terminal is connected to the power supply unit.

[0016] Preferably, the PD control unit includes a PD control chip, and the PD control chip is respectively connected to the PD signal output terminal and the power supply output terminal; the PD control chip adopts LDR6282 or CS32G020 model.

[0017] Preferably, the main control unit includes a power amplifier unit, and the power amplifier unit is connected to the PD control unit.

[0018] In a second aspect, the utility model discloses a multi-screen display, which comprises the above-mentioned multi-screen control circuit and a screen, wherein the screen is connected to the multi-screen control circuit.

[0019] The above technical solution provided by this application has the following advantages compared with the prior art:

[0020] The multi-screen control circuit and multi-screen display provided by the present application, in the multi-screen control circuit, a main control unit receives the signal transmitted by the connection port, and outputs it to the screen interface and another main control unit accordingly, and the other main control unit transmits the signal to the screen interface, and the screen interface is connected to the display screen, thereby achieving the purpose of single-port input signal and multi-screen display signal information; in addition, if the user wants to expand the screen again for display, the number of main control units can be expanded according to the number of screens that currently need to be connected, so as to achieve the purpose of multi-screen display and increase scalability.

[0021] For a multi-screen display that uses a multi-screen control circuit, the video signal output by the host can be displayed through multiple screens, improving the user's actual display needs and increasing the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0024] Figure 1 A schematic diagram of the structure of a multi-screen control circuit provided in this application;

[0025] Figure 2 A circuit diagram of a screen interface of a multi-screen control circuit provided in this application;

[0026] Figure 3 A schematic diagram of the structure of a connection port of a multi-screen control circuit provided in this application;

[0027] Figure 4 A schematic diagram of the structure of a PD control unit of a multi-screen control circuit provided in this application;

[0028] Figure 5 A circuit diagram of a port of a multi-screen control circuit provided by the present application;

[0029] Figure 6 A schematic diagram of the connection structure between a PD control unit and a main control unit of a multi-screen control circuit provided in the present application;

[0030] Figure 7 A circuit diagram of a screen control unit of a multi-screen control circuit provided by the present application;

[0031] Figure 8 A schematic diagram of the structure of a multi-screen display provided in this application.

[0032] Description of reference numerals:

[0033] 100. Multi-screen display;

[0034] 1. Multi-screen control circuit; 2. Screen;

[0035] 11. connection port; 111. PD control unit; 112. port;

[0036] 12. Main control unit; 121. Screen control unit; 122. Power supply unit; 123. Power amplifier unit;

[0037] 13. Screen interface. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0039] First, see Figure 1-7 The utility model discloses a multi-screen control circuit 1, which can drive and control multiple screens 2 for display.

[0040] The multi-screen control circuit 1 includes a connection port 11, at least two main control units 12, and at least two screen interfaces 13. Any two of the main control units 12 are electrically connected, the connection port 11 is electrically connected to any of the main control units 12, one main control unit 12 is connected to one screen interface 13, and the screen interface 13 is connected to one screen 2. The connection port 11 is used to receive a signal with video information, the main control unit 12 can output and expand the received signal, and the screen interface 13 receives the signal of the main control unit 12.

[0041] Specifically, the main control unit 12 is electrically connected, the main control unit 12 receives the signal output by the connection port 11, and the connection port 11 transmits the signal to the main control unit 12. The main control unit 12 controls the signal output according to the current user's needs, outputs the corresponding signal at the screen interface 13, and the screen 2 displays the information contained in the signal transmitted at the screen interface 13.

[0042] It can be understood that one main control unit 12 receives the signal transmitted by the connection port 11, and outputs it to the screen interface 13 and another main control unit 12 accordingly. The other main control unit 12 transmits the signal to the screen interface 13, and the screen interface 13 is connected to the display screen 2, thereby achieving the purpose of single-port input signal and multi-screen display signal information; in addition, if the user wants to expand the screen 2 for display again, the number of main control units 12 can be expanded according to the number of screens 2 that currently need to be connected, so as to achieve the purpose of multi-screen display and increase scalability.

[0043] In this embodiment, the number of main control units 12 and screen interfaces 13 is set to two, but the number of main control units 12 and screen interfaces 13 is not limited to two set in this embodiment, and can also be set to three, four or more than four. The number of main control units 12 and screen interfaces 13 can be set according to the actual needs of the user.

[0044] The connection port 11 includes at least one port 112 and a PD control unit 111. The port 112 is electrically connected to the PD control unit 111. The port 112 is used to receive signals. The PD control unit 111 is used to control input signals. The PD control unit 111 can identify the interface in the connection port 11 to output a video signal or a power signal. In addition, the PD control unit 111 can be connected to multiple ports 112. The PD control unit 111 can select one of the ports 112 as a video signal input port and another port 112 as a power signal input port.

[0045] Optionally, the port 112 may be a port 112 of any type, TYPE-C or DP. The port 112 may be used as a video signal transmission port or a power signal transmission port to transmit a video signal or a power signal. The type of the port 112 may be selected according to the current transmission signal type. A PD control unit 111 may be set to one type of port 112 or a combination of multiple types of ports 112 to meet different usage scenarios. In this embodiment, the port 112 is set to a TYPE-C port, but the type of the port 112 is not limited to the TYPE-C port set in this embodiment.

[0046] The main control unit 12 includes a screen control unit 121, a power supply unit 122, and a power amplifier unit 123. The PD control unit 111 is connected to the screen control unit 121, the power supply unit 122, and the power amplifier unit 123, respectively. The power supply unit 122 is connected to the screen control unit 121. The screen control unit 121 is used to control the signal output by the screen 2, the power supply unit 122 is used to power other units, and the power amplifier unit 123 is connected to the audio output device; wherein, the screen control unit 121 can output the corresponding video signal according to the user's needs, and the number of screen control units 121 is set accordingly according to the number of screens 2 expanded by the user.

[0047] The screen control unit 121 includes a display driver chip, which is connected to the screen interface 13. The display driver chip can drive the screen 2 connected to the screen interface 13 to operate. Specifically, the display driver chip has a built-in control program, and the user can select different display modes to display the type of video signal output by the display driver chip to the screen interface 13, wherein the display mode can adopt modes such as expansion, second screen, and copy.

[0048] In particular, the display driver chip adopts the RTD27X5 series model. If the user needs the corresponding resolution and refresh rate, the user can select the chip in the RTD27X5 series that can drive the resolution and refresh rate screen 2 to drive the corresponding screen 2, so that the video signal can be displayed on the screen 2 with different resolutions and refresh rates, so that the user can display video content on multiple screens with high resolution and high refresh rate.

[0049] The PD control unit 111 includes a PD control chip, which is connected to the port 112 . The PD control chip can automatically allocate a connection relationship between the two ports 112 .

[0050] In particular, the PD control chip adopts LDR6282 or CS32G020. In this embodiment, the PD control chip adopts LDR6282 chip, but the model of the PD control chip is not limited to the model adopted in this embodiment.

[0051] The screen control unit 121 includes a screen signal input terminal, a screen expansion connection terminal and a screen signal output terminal, and the display driver chip is connected to the screen signal input terminal, the screen expansion connection terminal and the screen signal output terminal; the PD control unit 111 includes a PD signal output terminal and a power supply output terminal, and the PD control chip is respectively connected to the PD signal output terminal and the power supply output terminal; the screen signal input terminal is connected to the PD signal output terminal or the screen signal input terminal of another screen control unit 121, and the power supply output terminal is connected to the power supply unit 122.

[0052] Specifically, the signal of port 112 is transmitted to the PD control chip, and the PD control chip divides the signal of port 112 into a video signal and a power signal. The PD control chip outputs the video signal through the PD signal output terminal and transmits it to the screen signal input terminal, while the power signal is transmitted to the power supply unit 122 through the power supply output terminal. The power supply unit 122 supplies power to each unit to ensure the normal operation of each unit. The screen signal input terminal transmits the signal to the display driver chip, and the display driver chip can directly output the video signal to the screen 2 through the screen signal output terminal. In addition, according to the current user's needs, the display driver chip can select all video signals or part of the video signals to transmit to the screen expansion connection terminal, thereby outputting the video signal according to the user's needs. It can be understood that the user selects all video signals in direct output mode in the display driver chip of the first screen control unit 121, and the display driver chip of the first screen control unit 121 transmits the signal to the screen signal input end of the second screen control unit 121 via the screen expansion connection end, and the display driver chip of the second screen control unit 121. The display driver chip of the second screen control unit 121 can choose to output in a copying manner and output the signal in the same manner as the signal output by the first screen control unit 121, or the first screen control unit 121 and the second screen control unit 121 jointly output all video signals in an expanded display manner. The specific output method can be adjusted according to the actual needs of the user.

[0053] Second, see Figure 8The utility model discloses a multi-screen display 100, which includes the above-mentioned multi-screen control circuit 1 and screen 2, the multi-screen control circuit 1 and screen 2 are electrically connected, the multi-screen control circuit 1 is connected to the video source, receives the video signal, the multi-screen control circuit 1 outputs the video signal to the screen 2, and the screen 2 displays the video signal according to the multi-screen control circuit 1. Specifically, for the multi-screen display 100 using the multi-screen control circuit 1, the video signal output by the host can be displayed through multiple screens 2, improving the actual display needs of the user and increasing the practicality of the device. The multi-screen control circuit 1 uses the RTD27X5 series model chip to drive the screen 2, so that the screen 2 of the multi-screen display 100 has the characteristics of high refresh rate and high resolution, which improves the user's experience.

[0054] In particular, at least two screens 2 are set in the multi-screen display 100. In the present embodiment, the multi-screen display 100 is provided with two screens 2, but the number of screens 2 set in the multi-screen display 100 is not limited to two, and can be set to three, four or more than four. The number of screens 2 can be set according to current actual needs.

[0055] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0056] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0057] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0058] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be connected, detachably connected, or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0060] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms should not be understood as necessarily being directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0061] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include these modifications and variations.

[0062] The above is a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A multi-screen control circuit, characterized in that: It includes a connection port, at least two main control units, and at least two screen interfaces; Any two of the main control units are electrically connected, the connection port is electrically connected to any of the main control units, one of the main control units is connected to one of the screen interfaces, and the screen interface is connected to one screen.

2. The multi-screen control circuit according to claim 1, characterized in that: The connection port includes a PD control unit and at least one port, and the port is electrically connected to the PD control unit; the port adopts any one of TYPE-C and DP.

3. The multi-screen control circuit according to claim 2, characterized in that: The main control unit includes a screen control unit and a power supply unit; The PD control unit is connected to the screen control unit and the power supply unit respectively, and the power supply unit is connected to the screen control unit.

4. The multi-screen control circuit according to claim 3, characterized in that: The screen control unit includes a display driver chip, and the display driver chip is connected to the screen interface.

5. The multi-screen control circuit according to claim 4, characterized in that: The display driver chip adopts any type of chip of RTD27X5 series.

6. The multi-screen control circuit according to claim 4, characterized in that: The screen control unit includes a screen signal input terminal, a screen extension connection terminal and a screen signal output terminal, and the display driving chip is connected to the screen signal input terminal, the screen extension connection terminal and the screen signal output terminal.

7. The multi-screen control circuit according to claim 3, characterized in that: The PD control unit includes a PD signal output terminal and a power supply output terminal; The screen signal input terminal is connected to the PD signal output terminal or the screen signal input terminal of another screen control unit, and the power supply output terminal is connected to the power supply unit.

8. The multi-screen control circuit according to claim 7, characterized in that: The PD control unit includes a PD control chip, and the PD control chip is respectively connected to the PD signal output terminal and the power supply output terminal; the PD control chip adopts LDR6282 or CS32G020 model.

9. The multi-screen control circuit according to claim 3, characterized in that: The main control unit includes a power amplifier unit, and the power amplifier unit is connected to the PD control unit.

10. A multi-screen display, characterized in that: It comprises the multi-screen control circuit and the screen as described in any one of claims 1 to 9 above, wherein the screen is connected to the multi-screen control circuit.

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