Display system

Abstract

The embodiment of the utility model belongs to the display technology, and provides a display system. The display system may include: a plurality of display devices; the display equipment comprises a display screen, a network interface, a touch sensing device and a processing device, the touch sensing device and the processing device are both connected with the network interface; the network interface of the first display device is connected with the network interface of at least one second display device through a first wire; the first display device is a display device of which the network interface is connected with the signal source device in the plurality of display devices; the first wire rod is used for transmitting a touch signal generated by the touch sensing device of the second display equipment in response to the touch operation of the touch object to the first display equipment, and / or transmitting an interaction instruction between the processing device of the first display equipment and the processing device of the second display equipment; the first display device is used for transmitting the touch signal to the signal source device. The number of wires between the display devices can be reduced.

Description

Technical Field

[0001] The embodiments of the present application relate to display technology, and more specifically, to a display system. Background Art

[0002] With the development of display technology, multi-screen interactive display devices such as two-screen and three-screen are becoming increasingly popular. At present, different display screens of multi-screen display devices usually need to be connected through at least three types of connection cables, such as High Definition Multimedia Interface (HDMI) cable, touch cable, and serial port cable. Therefore, there are many connection cables between different display screens of existing display devices, which may lead to greater complexity in the installation and maintenance of display devices. In addition, due to the large number of wires, there is a greater possibility that the wires may be damaged during later maintenance, and the safety is poor. Utility Model Content

[0003] An exemplary embodiment of the present application provides a display system that can reduce the number of wires between display devices.

[0004] In a first aspect, the present application provides a display system, the display system comprising: a plurality of display devices; the display devices comprising: a display screen, a network interface, a touch sensing device, and a processing device; the touch sensing device and the processing device are both connected to the network interface, and the display screen is used to display an image output by a signal source device;

[0005] The network interface of the first display device is connected to the network interface of at least one second display device through a first wire; the first display device is a display device among the multiple display devices whose network interface is connected to the signal source device; the second display device is a display device among the multiple display devices except the first display device;

[0006] The first wire is used to transmit a touch signal generated by a touch sensing device of the second display device in response to a touch operation of a touch object to the first display device, and / or to transmit an interaction instruction between a processing device of the first display device and a processing device of the second display device; the first display device is used to transmit the touch signal to the signal source device.

[0007] In some embodiments, the display device further comprises: a switch device, a first end of the switch device is connected to the touch sensing device, a second end of the switch device is connected to the network interface, and a third end of the switch device is connected to the processing device; the processing device of the second display device is configured as:

[0008] When it is detected that the network interface of the first display device is connected to the network interface of the second display device through the first wire, the switch device is controlled to conduct a communication link between the touch sensing device and the network interface; the communication link is used to transmit the touch signal.

[0009] In some embodiments, the switch device includes: a first switch module, and a second switch module, wherein a first end of the first switch module is connected to the touch sensing device, a second end of the first switch module is connected to a first end of the second switch module, a second end of the second switch module is connected to the network interface, and a third end of the first switch module and a third end of the second switch module are both connected to the processing device; the processing device of the second display device is configured as follows:

[0010] When it is detected that the network interface of the first display device is connected to the network interface of the second display device through the first wire, the first switch module is controlled to be turned on, and the second switch module is controlled to be turned on, so as to conduct the communication link.

[0011] In some embodiments, the first display device further includes: a first hub device and a second hub device, the network interface includes: a first network interface, and a second network interface, a first end of the first hub device is connected to the first network interface, a second end of the first hub device is connected to the signal source device, and the first network interface and the second network interface are both connected to the processing device; a fourth end of the second switch module is connected to the signal source device through the second hub device;

[0012] If the second display device is connected to the first network interface of the first display device through the first wire, the touch signal is transmitted to the signal source device through the first wiring device;

[0013] The processing device of the first display device is configured to: when the second display device is connected to the second network interface of the first display device through the first wire, control the second switch module to turn on the communication link between the second network interface and the second hub device, so that the touch signal is transmitted to the signal source device through the communication link between the second network interface and the second hub device.

[0014] In some embodiments, the display device further includes: a voltage isolation device, a first end of which is connected to the processing device, and a second end of which is connected to the network interface; the voltage isolation device can be used to perform voltage isolation between the display devices, as well as transmission of the interactive instructions.

[0015] In some embodiments, the display device further includes: a multimedia interface; the multimedia interface of the first display device is connected to the multimedia interface of the at least one second display device via a second wire; and the second wire is used to transmit multimedia data.

[0016] In some embodiments, the touch sensing device is connected to the processing device, and the processing device of the display device is further configured to:

[0017] A touch signal generated by the touch sensing device in response to a touch operation of a touch object is received, and the touch signal is responded to.

[0018] In some embodiments, the fourth end of the first switch module of the first display device is connected to the signal source device, and the processing device of the first display device is configured as follows:

[0019] The first switch module is controlled to conduct a communication link between the touch sensing device and the signal source device, so that the touch signal is transmitted to the signal source device.

[0020] In some embodiments, the display device further comprises: an external device interface, the fifth end of the first switch module is connected to the external device interface, and the processing device of the display device is further configured to:

[0021] When it is detected that an external device is connected to the display device through the external device interface, the first switch module is controlled to conduct a communication link between the touch sensing device and the external device, so that the touch signal is transmitted to the external device.

[0022] In some embodiments, the network interface is an RJ45 interface, and the first wire is an RJ45 network cable.

[0023] The display system provided by the present application can realize the transmission of touch signals and interactive commands through the above-mentioned network interface and the first wire. Compared with the prior art that requires different wires for transmitting touch signals and transmitting interactive commands, the present application can realize the transmission of touch signals and interactive commands only through the first wire, thereby reducing the number of wires between the first display device and the second display device. By reducing the wires between the first display device and the second display device, the complexity of display device installation and maintenance is reduced, and the overall reliability and safety of the display device are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the implementation methods in the embodiments of the present application or the related technologies, the following is a brief introduction to the drawings required for use in the embodiments or the related technology descriptions. Obviously, the drawings described below are some embodiments of the present application, and a person skilled in the art can also obtain other drawings based on these drawings.

[0025] Figure 1 A schematic diagram of a multi-screen scenario;

[0026] Figure 2 It is a schematic diagram of the communication method between the main screen and the secondary screen in the existing multi-screen scenario;

[0027] Figure 3 A schematic diagram of the architecture of a display system provided in this application;

[0028] Figure 4 A schematic diagram of the structure of a display device provided in this application;

[0029] Figure 5 A schematic diagram of the structure of another display device provided by the present application;

[0030] Figure 6 A schematic diagram of the structure of another display device provided by the present application;

[0031] Figure 7 A schematic diagram of the structure of another display device provided by the present application;

[0032] Figure 8 A schematic diagram of the structure of another display device provided by the present application;

[0033] Fig. 9 A schematic diagram of the structure of another display device provided by the present application;

[0034] Fig.10 A schematic diagram of the structure of another display device provided by the present application;

[0035] Fig.11 A schematic diagram of the architecture of another display system provided by the present application;

[0036] Fig.12 A schematic diagram of the architecture of another display system provided in the present application. DETAILED DESCRIPTION

[0037] In order to make the purpose, implementation mode and advantages of the present application clearer, the exemplary implementation mode of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0038] It should be noted that the brief description of terms in this application is only for the convenience of understanding the embodiments described below, and is not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their common and usual meanings.

[0039] In addition, the terms "include" and "have" and any variations thereof are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to those components expressly listed but may include other components not expressly listed or inherent to such products or devices.

[0040] In the fields of teaching and conferences, large touch screens have become standard. With the development of educational informatization, the popularization of combined-class smart classrooms and remote office, two-screen and three-screen interactive display devices are becoming increasingly popular. Taking remote video conferencing as an example, the demand for multi-scenario display such as remote video conferencing content display and on-site conference display has driven the increasing demand for dual-screen or three-screen conference scenes. Multi-screen linkage and reverse control technologies have also become the current core demands.

[0041] Take the multi-screen scenario with a main screen and two secondary screens as an example. Figure 1 is a schematic diagram of a multi-screen scenario. Figure 1 As shown, the middle can be the main screen. The left and right sides of the main screen are sub-screen A and sub-screen B respectively. Taking the above-mentioned main and sub-screens as display devices with touch functions (also referred to as touch devices) as an example, the main screen can include a complete touch function. The main screen may include an open pluggable specification (OPS, a computing module plug-in format). The OPS can be used to control the operation of the main screen application and display output. For example, sub-screen A and sub-screen B can both display, touch-control the main screen, respond to serial port commands of the main screen, etc. When the main screen OPS is extended, sub-screen A and sub-screen B can be used as extended displays of OPS to realize the splicing of the images of the three screens into an overall display.

[0042] Figure 2 Schematic diagram of the communication method between the main and secondary screens in the existing multi-screen scenario. Figure 2 As shown, currently, the main and secondary screens usually need to be connected through at least three types of cables, such as HDMI cable, touch cable, and serial cable. Among them, the HDMI cable can be used to transmit audio and video signals, the touch cable can be used to transmit touch signals, and the serial cable can be used for interactive commands between the main screen and the secondary screen.

[0043] like Figure 2 As shown, the three HDMI outputs of the OPS module (such as Figure 2The HDMIOUT shown in the figure is respectively connected to the HDMI input (IN) of the main screen, the HDMI input (IN) of the sub-screen A, and the HDMI input (IN) of the sub-screen B. The three universal serial buses (USB) of the OPS module are respectively connected to the touch functions of the three touch screens for inputting the three screen control commands so as to perform OPS response. For example, when the main screen, sub-screen A or sub-screen B is touched, the touch command is returned to the OPS computer through the touch line. After receiving the command, the OPS computer can process or respond to the relevant command.

[0044] The Universal Asynchronous Receiver / Transmitter (UART) serial port of the main screen motherboard is connected to the UART of sub-screen A and the UART of sub-screen B through serial port lines, respectively, for transmitting some control instructions, such as power on and off, brightness adjustment, channel switching function and other instructions. Through the serial port line, when adjusting the status of any large screen, such as adjusting the brightness information of the main screen, serial port instructions can be sent to sub-screen A and sub-screen B while the brightness of the main screen is adjusted to adjust the brightness values ​​of sub-screen A and sub-screen B. Sub-screen A and sub-screen B can also return the brightness value of the screen, for example. The main screen can end the command when the brightness values ​​of the three screens are consistent, otherwise the brightness adjustment instruction can be sent multiple times until the brightness is consistent.

[0045] However, the existing connection method between the main and sub-screens requires at least three types of connection cables, such as HDMI cable, Touch cable, and serial port cable, so there are many main and sub-screen connection cables, especially in the three-screen scenario, which will lead to a long time for display debugging and installation, easy to plug the wrong wires, and difficult to maintain after wall-mounted installation, which increases the complexity of installation and maintenance. And because there are many wires, if the main screen or sub-screen is dragged during later maintenance, it may cause damage to the wires due to stress, which has low reliability and poor safety.

[0046] Considering that the reason why the existing display devices have the above-mentioned problems is that there are many wires between multiple display screens, the present application proposes a method for reducing the wires between display screens to reduce the complexity of installation and maintenance of the display device. By reducing the wires between display screens, the overall reliability and safety of the display device can also be improved.

[0047] The technical solution of the present application is described in detail below in conjunction with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0048] Figure 3 This is a schematic diagram of the architecture of a display system provided in this application. Figure 3As shown, the display system may include: a plurality of display devices. For any display device in the display system, the display device may include: a display screen ( Figure 3 ), a network interface, a touch sensing device, and a processing device. The touch sensing device and the processing device are both connected to the network interface.

[0049] The first display device may be a display device whose network interface is connected to the signal source device among the multiple display devices, and the second display device may be a display device other than the first display device among the multiple display devices.

[0050] In some embodiments, the first display device may also be referred to as a main screen, and the second display device may also be referred to as a secondary screen. In addition, it should be understood that the present application does not limit the display device that serves as the main screen (that is, connected to the signal source device) in the display system. For example, for the same display device, the display device may be connected to the signal source device as the first display device; or, the display device may not be connected to the signal source device, but may be connected to the first display device as the second display device.

[0051] Optionally, the signal source device may be integrated into the first display device. Alternatively, the signal source device may be a signal source device independent of the first display device and connected to the first display device. Figure 3 This is an exemplary description of the display system in which the signal source device is integrated into the first display device. Exemplarily, the signal source device can be any existing electronic device that can output images so that the display screen can display images. For example, the signal source device can be the aforementioned OPS computer.

[0052] The above-mentioned display screen can be used to display the image output by the signal source device. Among them, the image can be, for example, each frame image in a video stream or other images, and the present application does not limit the image. It should be understood that the present application does not limit the type of the display screen. For example, the display panel of the display screen can adopt a liquid crystal display (liquid crystal display, LCD), an organic light-emitting diode (organic light-emitting diode, OLED), an active matrix organic light emitting diode or an active matrix organic light emitting diode (active-matrix organic light emitting diode, AMOLED), a flexible light emitting diode (flex light-emitting diode, FLED), Miniled, MicroLed, Micro-oLed, quantum dot light emitting diodes (quantum dot light emitting diodes, QLED), etc.

[0053] like Figure 3 As shown, the network interface of the first display device can be connected to the network interface of at least one second display device through a first wire. It should be understood that the present application does not limit the number of second display devices connected to the first display device. Figure 3 The display system is merely described by taking the example of a first display device connected to two second display devices.

[0054] The first wire can be used to transmit the touch signal "generated by the touch sensing device of the second display device in response to the touch operation of the touch object" to the first display device, and / or to transmit interaction instructions between the processing device of the first display device and the processing device of the second display device.

[0055] The first display device may transmit the touch signal to the signal source device. By transmitting the touch signal to the signal source device, the signal source device may respond to the touch signal and perform an operation corresponding to the touch signal. In some embodiments, the first display device may also transmit the touch signal to a processing device of the first display device.

[0056] The first display device may transmit the interaction instruction from the second display device to the above-mentioned processing device, so that the processing device responds to the interaction instruction. The second display device may also transmit the interaction instruction from the first display device to the processing device of the second display device, so that the processing device of the second display device can respond to the interaction instruction.

[0057] It should be understood that the present application does not limit the touch sensing method of the above-mentioned touch sensing device. Exemplarily, the touch sensing device can be a touch sensing device based on infrared touch technology or capacitive touch technology. In addition, the present application does not limit the above-mentioned touch object. The touch object can be any touch object such as a finger, a palm, a stylus, etc. The above-mentioned processing device can be any device with processing function such as a system on chip (SOC).

[0058] As a possible implementation, the network interface may be, for example, an RJ45 (the name of a connector at a communication lead-out end in a wiring system) interface, and the first wire may be, for example, an RJ45 network cable. Alternatively, the network interface and the first wire may also be other existing network interfaces and wires.

[0059] It should be understood that the present application does not limit the application scenarios of the above display system. Exemplarily, the display system can be used in touch-controlled large-screen multi-screen interactive display scenarios such as office, teaching, and conference.

[0060] In this embodiment, the transmission of touch signals and interactive commands can be realized through the above-mentioned network interface and the first wire. Compared with the prior art that the transmission of touch signals and the transmission of interactive commands require different wires, the present application can realize the transmission of touch signals and interactive commands only through the first wire, thereby reducing the number of wires between the first display device and the second display device. By reducing the wires between the first display device and the second display device, the complexity of display device installation and maintenance is reduced, and the overall reliability and safety of the display device are improved.

[0061] The following describes in detail how the touch signal is transmitted between the first display device and the second display device through the first wire:

[0062] Figure 4 Schematic diagram of a display device provided in the present application. The display device may be the first display device or the second display device. Figure 4 As shown, as a possible implementation, the display device may further include: a switch device. The first end of the switch device may be connected to the touch sensing device. The second end of the switch device may be connected to the network interface. The third end of the switch device may be connected to the processing device ( Figure 4 not shown).

[0063] The processing device of the second display device may be configured to: when detecting that the network interface of the first display device is connected to the network interface of the second display device via the first wire, control the switch device to conduct the communication link between the touch sensing device and the network interface. The communication link may be used to transmit touch signals.

[0064] Through the above method, after the first display device and the second display device are connected through the first wire, the second display device can transmit touch signals through the conductive communication link, laying a foundation for the transmission of touch signals and interactive instructions based on the first wire.

[0065] Figure 5 This is a schematic diagram of the structure of another display device provided by this application. Figure 5 As shown, in some embodiments, the switch device may include: a first switch module, and a second switch module. The first end of the first switch module may be connected to the touch sensing device. The second end of the first switch module may be connected to the first end of the second switch module. The second end of the second switch module may be connected to the network interface. The third end of the first switch module and the third end of the second switch module are also connected to the processing device ( Figure 5 not shown).

[0066] Exemplarily, the first switch module and the second switch module may be any existing switch device that can be controlled by a processing device to switch on or off, and the present application does not limit this.

[0067] The processing device of the second display device may be configured to control the first switch module to be turned on and the second switch module to be turned on when detecting that the network interface of the first display device is connected to the network interface of the second display device through the first wire, so as to conduct the above-mentioned communication link.

[0068] It should be understood that the present application does not limit how the processing device detects whether the network interface of the first display device is connected to the network interface of the second display device through the first wire. Exemplarily, the processing device can determine whether the network interface of the first display device is connected to the network interface of the second display device through the first wire by detecting a level change of the network interface.

[0069] By connecting the first switch module and the second switch module, the communication link between the touch sensing device and the network interface can be connected, which lays a foundation for the subsequent transmission of touch signals based on the communication link.

[0070] The following describes in detail how the first display device transmits the touch signal to the signal source device:

[0071] Figure 6 This is a schematic diagram of the structure of another display device provided by the present application. Figure 6 As shown, as a possible implementation, the first display device may further include: a first hub device. The above-mentioned network interface may include: a first network interface, and a second network interface. The first end of the first hub device may be connected to the first network interface. The second end of the first hub device may be connected to a signal source device. The first network interface and the second network interface may both be connected to a processing device. The fourth end of the above-mentioned second switch module may be connected to the signal source device through the second hub device.

[0072] It should be understood that the present application does not limit the specific components of the first hub device and the second hub device. For example, the first hub device and the second hub device may both be USB-Hubs.

[0073] Optionally, if the second display device is connected to the first network interface of the first display device via a first cable, the touch signal may be transmitted to the signal source device via a wiring hub.

[0074] Alternatively, the processing device of the first display device can also control the above-mentioned second switch module to turn on the communication link between the second network interface and the second hub device when the second display device is connected to the second network interface of the first display device through the first wire, so that the touch signal is transmitted to the signal source device through the communication link between the second network interface and the second hub device.

[0075] Through the above-mentioned wiring device, the regularity of the wires of the display device is improved, thereby improving the convenience of subsequent maintenance of the display device. Through the above-mentioned wiring device and switch device, the touch signal of the second display device connected to the first network interface of the first display device, or the touch signal of the display device connected to the second network interface can be transmitted to the signal source device.

[0076] The following is a detailed description of how the first display device and the second display device transmit interactive instructions through the first wire:

[0077] Figure 7 This is a schematic diagram of the structure of another display device provided by the present application. Figure 7 As shown, as a possible implementation, the display device further includes: a voltage isolation device. A first end of the voltage isolation device can be connected to the processing device. A second end of the voltage isolation device can be connected to the network interface.

[0078] The voltage isolation device can be used to isolate the voltage between display devices and transmit the interaction instructions.

[0079] In this implementation, the processing device of the display device can also transmit the above-mentioned interactive instructions to the network interface through the voltage isolation device, and transmit the interactive instructions to other display devices through the first wire. Wherein, taking the display device as the first display device as an example, the other display device can be a second display device connected to the first display device through the first wire. Taking the display device as the second display device as an example, the other display device can be a first display device connected to the second display device through the first wire.

[0080] Exemplarily, the voltage isolation device may be a voltage conversion chip. In some embodiments, the voltage isolation device may also convert the voltage signal input from the external computer to the processing device when the display device is connected to an external computer, so that the processing device of the display device can recognize the serial port command input from the external computer.

[0081] By isolating the voltage between display devices through the above-mentioned voltage isolation device, the problem of voltage difference between display devices due to material consistency problems, which in turn causes damage to the devices, is avoided, further improving the safety and service life of the display system and improving the user experience. For example, if the above-mentioned voltage isolation device is not provided, even if both display devices are designed according to the 5V voltage, the actual voltage measurement value of one display device may be 5.1V, and the voltage of the other display device may be 4.9V. When the two display devices are connected together, 5.1V will inject current into 4.9V to make the two voltages the same, and this process will cause damage to the device.

[0082] As a possible implementation, the display device may further include a multimedia interface. The multimedia interface of the first display device may be connected to the multimedia interface of at least one second display device via a second wire. The second wire may be used to transmit multimedia data.

[0083] Exemplarily, the multimedia data may include at least one item of data such as audio, video, image, text, etc. Exemplarily, the multimedia interface may be the aforementioned HDMI. The second wire may be an HDMI cable.

[0084] Optionally, taking the second display device as an example, after receiving the multimedia data from the first display device through the above-mentioned multimedia interface and the second wire, the second display device can, for example, display and / or play the multimedia data.

[0085] Through the multimedia interface and the second wire, multimedia data can be transmitted between the first display device and the second display device, which improves the flexibility of the display system and further improves the user experience.

[0086] As a possible implementation manner, the display device may also receive a touch signal by responding to the touch signal locally. Figure 8 This is a schematic diagram of the structure of another display device provided by the present application. Figure 8 As shown, the touch sensing device of the display device can be connected to the processing device. In this implementation, the processing device can receive the touch signal generated by the touch sensing device in response to the touch operation of the touch object, and respond to the touch signal. In other words, the touch signal can be transmitted to the processing device, and can also be transmitted to the signal source device at the same time.

[0087] It should be understood that the present application does not limit how the processing device responds to the touch signal. The processing device may, for example, pre-store a mapping relationship between the touch signal and the corresponding operation so that the processing device can respond to the touch signal and perform the operation corresponding to the touch signal.

[0088] In addition, it should be understood that the present application does not limit how the processing device and the touch sensing device are connected. Taking the case where the processing device can process the touch signal of the USB protocol, and the touch signal output by the touch sensing device is a USB protocol signal, the processing device can be directly connected to the touch sensing device. Taking the case where the processing device can process the touch signal of the USB protocol, and the touch signal output by the touch sensing device is a serial port UART data, the processing device can be connected to the touch sensing device through a UART-USB protocol conversion module, for example. The UART-USB protocol conversion module can convert the touch signal of the serial port UART data protocol into a touch signal of the USB data protocol, and then output it to the processing device, so that the processing device can recognize the touch signal and respond. Exemplarily, the UART-USB protocol conversion module can be implemented, for example, by a microcontroller unit (MCU).

[0089] By connecting the processing device to the touch sensing device, the processing device can also obtain the touch signal and respond, thereby further improving the flexibility of the display system.

[0090] Taking the first display device as an example, as a possible implementation manner, the first display device may also transmit the touch signal collected by the touch sensing device of the first display device to the signal source device. Fig. 9 This is a schematic diagram of the structure of another display device provided by the present application. Fig. 9 As shown, for example, the fourth end of the first switch module of the first display device can be connected to the signal source device. In this implementation, the processing device of the first display device can control the first switch module to conduct the communication link between the touch sensing device and the signal source device, so that the above touch signal is transmitted to the signal source device.

[0091] By connecting the first switch module to the signal source device, the touch signal collected by the touch sensing device of the first display device itself can be transmitted to the signal source device. In other words, the user can perform touch operations on the first display device, and the signal source device can respond to the touch signal, further improving the flexibility of the display system.

[0092] As a possible implementation manner, the above display device may also be connected to an external device. Fig.10 This is a schematic diagram of the structure of another display device provided by the present application. Fig.10As shown, for example, the display device may further include: an external device interface. The fifth end of the first switch module may be connected to the external device interface, and the processing device of the display device may further control the first switch module to conduct the communication link between the touch sensing device and the external device when detecting that the external device is connected to the display device through the external device interface, so that the touch signal is transmitted to the external device.

[0093] Exemplarily, the processing device may, for example, determine that an external device is connected to the display device through the external device interface when a level signal representing that an external device is connected is detected through the external device interface.

[0094] It should be understood that the present application does not limit the above external device. For example, the external device may be a notebook computer or other device.

[0095] Exemplarily, after receiving the touch signal, the external device may respond to the touch signal and perform an operation corresponding to the touch signal, for example.

[0096] By connecting the first switch module to the external device, the touch signal can be transmitted to the external device, so that the external device can be controlled by the display device, thereby further improving the flexibility of the display system.

[0097] For example, the above display system includes a first display device (referred to as a main screen) and two second display devices (referred to as secondary screen A and secondary screen B, respectively). Fig.11 This is a schematic diagram of another display system architecture provided by this application. Fig.11 As shown, compared with the prior art that requires at least three types of wires such as HDMI cable, serial port cable, Touch cable to connect the main screen and the secondary screen in the display system, the display system provided by the present application is simplified to be connected through HDMI cable and RJ45 network cable (or called network port cable). The network port cable integrates the Touch function and the serial port function, reducing the number of wires between the display screens.

[0098] Based on Fig.11 The display system shown, Fig.12 This is a schematic diagram of another display system architecture provided by the present application. Fig.12 As shown, the main screen can be connected to the OPS computer. The main screen and the sub-screen can be display devices with the same structure. Sub-screen A and sub-screen B can be connected to the OPS computer (when the main screen is connected to the OPS computer, the sub-screen is not connected to the OPS computer). Fig.12As shown, the aforementioned processing device may be a SOC; the voltage isolation device may be a voltage conversion chip; the touch sensing device may be a touch frame; the first switch module may be SW1; the second switch module may be SW2; C-touch is used to represent an external device interface, and D-touch represents an interface between display devices.

[0099] like Fig.12 As shown, in the serial port command transmission part, the SOC serial port is divided into two paths after passing through the voltage conversion chip and connected to the RJ45-1 and RJ45-2 sockets of the mainboard respectively. The main and sub-screen mainboards are set up in the same way.

[0100] The touch part is integrated, and the SOC can receive the serial UART data of the touch frame, and convert the serial format data protocol into USB data through the voltage conversion chip and send it to the movement SOC for processing. Or the SOC (also called Android SOC) receives the USB protocol signal from the touch frame and processes it directly. When an external C-Touch is connected, you can switch to the external C-Touch to control external devices such as laptops.

[0101] When a dual-screen or triple-screen display system is formed, the touch signal of the sub-screen A or sub-screen B can be switched to the second switch module SW2, and then switched to RJ45-2, and output to the signal source OPS computer. On the main screen side, the touch signal of this machine can be given to the USB2.0 interface of the OPS computer via SW1, such as the USB interface of the 80PIN socket. The touch signal of the sub-screen A received by the main screen is transmitted through the main screen RJ45-1 terminal—Usb-Hub—USB interface of OPS. The touch signal of the sub-screen B received by the main screen is transmitted through the main screen RJ45-2 terminal—SW2 switch chip—Usb-Hub—USB interface of OPS. Through this display device, the OPS computer can receive three-way touch signals. When the main screen, sub-screen A, and sub-screen B are touched respectively, for example, the OPS computer can be controlled and file management, modification, and other operations can be performed. Through the above method, the motherboard and card are universal, and the wire material is optimized.

[0102] In this embodiment, the serial ports and touch signals of the main screen, sub-screen A, and sub-screen B are integrated and transmitted through the network cable, which reduces the hardware connection between the main and sub-screens. By using a universal network cable, the cost of wires is reduced, and the universality of the display system is improved. The buckle design of the network cable is convenient for plugging and unplugging, while increasing stress to prevent the wires from falling off, thereby improving the user experience. Through the above-mentioned display system, interactive touch command distribution and real-time interaction between display devices can be carried out, and the number of hardware connections between the main and sub-screens of the touch screen is reduced, the aesthetics of the wiring is improved, and the complexity of installation and implementation is reduced. By reducing the types of wires between the main screen and the sub-screen, the wiring is simple and convenient, and the reliability of the display system is also improved.

[0103] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0104] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A display system, characterized in that: The display system comprises: a plurality of display devices; the display devices comprise: a display screen, a network interface, a touch sensing device, and a processing device; the touch sensing device and the processing device are both connected to the network interface, and the display screen is used to display an image output by a signal source device; The network interface of the first display device is connected to the network interface of at least one second display device through a first wire; the first display device is a display device among the multiple display devices whose network interface is connected to the signal source device; the second display device is a display device among the multiple display devices except the first display device; The first wire is used to transmit a touch signal generated by a touch sensing device of the second display device in response to a touch operation of a touch object to the first display device, and / or to transmit an interaction instruction between a processing device of the first display device and a processing device of the second display device; the first display device is used to transmit the touch signal to the signal source device; The display device further includes: a switch device, the switch device including: a first switch module, and a second switch module, wherein a first end of the first switch module is connected to the touch sensing device, a second end of the first switch module is connected to a first end of the second switch module, a second end of the second switch module is connected to the network interface, and a third end of the first switch module and a third end of the second switch module are both connected to the processing device; The processing device of the display device is configured to: when it is detected that the network interface of the first display device is connected to the network interface of the second display device through the first wire, control the first switch module to be turned on, and control the second switch module to be turned on, so as to conduct the communication link; the second switch module of the first display device is connected to the signal source device and / or the network interface is connected to the signal source device, and the first switch module of the first display device is connected to the signal source device; The touch sensing device is connected to the processing device, and the processing device of the display device is further configured as follows: receiving a touch signal generated by the touch sensing device in response to a touch operation on a touch object, and responding to the touch signal; The fourth end of the first switch module of the first display device is connected to the signal source device, and the processing device of the first display device is specifically configured as follows: The first switch module is controlled to conduct a communication link between the touch sensing device and the signal source device, so that the touch signal is transmitted to the signal source device.

2. The display system according to claim 1, characterized in that: The first display device further includes: a first hub device and a second hub device, the network interface includes: a first network interface and a second network interface, a first end of the first hub device is connected to the first network interface, a second end of the first hub device is connected to the signal source device, and the first network interface and the second network interface are both connected to the processing device; a fourth end of the second switch module is connected to the signal source device through the second hub device; If the second display device is connected to the first network interface of the first display device through the first wire, the touch signal is transmitted to the signal source device through the first wiring device; The processing device of the first display device is configured to: when the second display device is connected to the second network interface of the first display device through the first wire, control the second switch module to turn on the communication link between the second network interface and the second hub device, so that the touch signal is transmitted to the signal source device through the communication link between the second network interface and the second hub device.

3. The display system according to claim 1 or 2, characterized in that: The display device also includes: a voltage isolation device, a first end of which is connected to the processing device, and a second end of which is connected to the network interface; the voltage isolation device can be used to perform voltage isolation between the display devices, as well as the transmission of the interactive instructions.

4. The display system according to claim 1 or 2, characterized in that: The display device further includes: a multimedia interface; the multimedia interface of the first display device is connected to the multimedia interface of the at least one second display device via a second wire; the second wire is used to transmit multimedia data.

5. The display system according to claim 1 or 2, characterized in that: The display device further includes: an external device interface, the fifth end of the first switch module is connected to the external device interface, and the processing device of the display device is further configured as: When it is detected that an external device is connected to the display device through the external device interface, the first switch module is controlled to conduct a communication link between the touch sensing device and the external device, so that the touch signal is transmitted to the external device.

6. The display system according to claim 1 or 2, characterized in that: The network interface is an RJ45 interface, and the first wire is an RJ45 network cable.

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