Interactive display device, system, method, electronic device, and program product

Abstract

The invention belongs to the technical field of electronic information, and provides an interactive display device, system and method, an electronic device and a program product. In the interactive display device, a transmission interface is connected with a processing chip and used for transmitting a screen projection signal from an external device to the processing chip under the condition that the external device is connected into the transmission interface through a data line; the processing chip is connected with the display module and is used for transmitting the media stream data carried in the screen projection signal to the display module so as to display video data in the media stream data through the display module; the communication network module is connected with the processing chip and is used for transmitting the network signal to the processing chip, so that the interactive display equipment is networked; and the signal processing module is respectively connected with the communication network module and the transmission interface and is used for receiving the network signal from the communication network module and transmitting a shared network signal obtained by processing the network signal to external equipment through the transmission interface.

Description

Technical Field

[0001] The present application belongs to the field of electronic information technology, and more specifically, relates to an interactive display device, system, method, electronic device and program product. Background Art

[0002] Taking the screen projection scenario as an example, after the user connects an external device (such as a computer, game console, mobile phone) to an interactive display device (such as a TV, projector, monitor and other large-screen display devices), the image and sound signals are transmitted according to relevant interface protocols such as the HDMI standard protocol, thereby presenting the image and audio of the external device on the interactive display device.

[0003] However, if an external device needs to connect to the Internet, it still needs to search and connect to the wireless network through its own Wi-Fi module, or use a network cable to connect directly to the network interface on the device (if available). This means that when the external device displays content on the screen, if it involves calling network resources, it still needs to rely on independent network access methods. Summary of the Invention

[0004] The purpose of the embodiments of the present application is to provide an interactive display device, system, method, electronic device and program product, which aims to solve the technical problem that when the existing interactive display device displays content on the screen, the call of network resources of external devices connected to it depends on independent network access, and the network access is not convenient.

[0005] To achieve the above objectives, according to a first aspect of the present application, an interactive display device is provided, comprising: a transmission interface, a processing chip, a display module, a communication network module, and a signal processing module, wherein:

[0006] The transmission interface is connected to the processing chip and is used to transmit the projection signal from the external device to the processing chip when the external device is connected to the transmission interface via a data cable;

[0007] A processing chip connected to the display module is used to transmit the media stream data carried in the projection signal to the display module so that the video data in the media stream data can be displayed through the display module;

[0008] A communication network module, connected to the processing chip, for transmitting network signals to the processing chip so that the interactive display device can be connected to the network;

[0009] The signal processing module is connected to the communication network module and the transmission interface respectively, and is used to receive the network signal from the communication network module and transmit the shared network signal obtained by processing the network signal to the external device through the transmission interface.

[0010] In one possible implementation, the interactive display device further includes a switch chip;

[0011] The switch chip connects to the communication network module and divides the network signal into two paths;

[0012] The switch chip is also connected to the processing chip and the signal processing module, and is used to transmit one network signal to the processing chip and another network signal to the signal processing module.

[0013] In one possible implementation, the communication network module includes at least one of the following:

[0014] The Wi-Fi module is used to receive wireless network signals and transmit the wireless network signals to the processing chip through the hub module, so that the interactive display device can connect to the wireless network signal;

[0015] The wired network card is used to receive a wired network signal and transmit the wired network signal to the switch chip. The switch chip transmits one wired network signal to the processing chip via the first signal conversion module, so that the interactive display device is connected to the wired network signal.

[0016] In one possible implementation, the interactive display device further includes:

[0017] The plug-and-play interface is connected to the processing chip and the first signal conversion module respectively, and is used to send the wireless network signal converted by the first signal conversion module to the processing chip.

[0018] In one possible implementation, the signal processing module includes:

[0019] The second signal conversion module is connected to the switch chip and is used to convert the network signal to obtain a signal in a converted format;

[0020] The signal switching module is connected to the second signal conversion module and the transmission interface respectively, and is used for performing signal switching processing on the format-converted signal and transmitting the obtained shared network signal to the transmission interface.

[0021] In one possible implementation, the interactive display device further includes:

[0022] The decoding module is connected to the processing chip and is used to decode the projection signal and convert it into an analog audio signal;

[0023] The operational amplifier module is connected to the decoding module and is used to amplify the analog audio signal to obtain media stream data;

[0024] The speaker module is connected to the operational amplifier module and is used to output audio data in the media stream data.

[0025] In one possible implementation, the processing chip is used to determine video data and audio data in the media stream data;

[0026] The interactive display device further includes:

[0027] An image transmission interface, connecting the processing chip and the display module, for transmitting video data in the media stream data to the display module;

[0028] The storage module is connected to the processing chip and is used to store media stream data.

[0029] In one possible implementation, the transmission interface includes a Type-C interface, and the data line includes a Type-C data line;

[0030] The Type-c interface is used to receive the projection signal from the external device via the Type-c data cable;

[0031] The processing chip also includes: an HDMI interface connected to the Type-c interface, which is used to receive the screen projection signal transmitted from the Type-c interface to the processing chip.

[0032] In one possible implementation, the interactive display device includes:

[0033] The first mainboard is used to integrate the processing chip, image transmission interface, Type-C interface, HDMI interface, storage module, hub module and signal switching module in the interactive display device;

[0034] The second mainboard is connected to the first mainboard and is used to integrate the Wi-Fi module, the switch chip, the first signal conversion module and the second signal conversion module in the interactive display device;

[0035] A third mainboard, connected to the first mainboard, is used to integrate a decoding module, an operational amplifier module, and a speaker module in the interactive display device;

[0036] The power supply module is connected to the first mainboard, the second mainboard and the third mainboard respectively, and is used to supply power to the first mainboard, the second mainboard and the third mainboard.

[0037] According to a second aspect of the present application, an interactive display system is provided, characterized in that it includes: an external device, and any one of the interactive display devices, wherein:

[0038] The external device is used to transmit the screen projection signal to the interactive display device when connected to the transmission interface of the interactive display device;

[0039] An interactive display device is used to display the video data in the media stream data carried in the projection signal; and after performing signal conversion and signal switching processing on the local network signal, the obtained shared network signal is transmitted to the external device via the transmission interface.

[0040] The second aspect and any implementation of the second aspect correspond to the first aspect and any implementation of the first aspect, respectively. The technical effects corresponding to the second aspect and any implementation of the second aspect can be referred to the technical effects corresponding to the first aspect and any implementation of the first aspect, and will not be repeated here.

[0041] According to a third aspect of the present application, an interactive display method is provided, characterized in that it is applied to any interactive display device, and the method includes:

[0042] When the external device is connected to the transmission interface of the interactive display device, the screen projection signal from the external device is received;

[0043] Displaying the video data in the media stream data carried in the projection signal; and

[0044] After the local network signal is subjected to signal conversion processing and signal switching processing, the obtained shared network signal is transmitted to the external device via the transmission interface.

[0045] The third aspect and any implementation of the third aspect correspond to the first aspect and any implementation of the first aspect, respectively. The technical effects corresponding to the third aspect and any implementation of the third aspect can be referred to the technical effects corresponding to the first aspect and any implementation of the first aspect, and will not be repeated here.

[0046] According to a fourth aspect of the present application, an electronic device is provided, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the electronic device implements any one of the methods.

[0047] According to a fifth aspect of the present application, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, any one of the methods is implemented.

[0048] According to a sixth aspect of the present application, a computer program product is provided. When the computer program product is run on an electronic device, the electronic device executes any one of the methods in the first aspect above.

[0049] It can be understood that the beneficial effects of the second to sixth aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here.

[0050] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0051] The external device is connected to the transmission interface of the interactive display device through a single data line, and the projection signal from the external device is transmitted to the processing chip through the transmission interface, and the media stream data carried in the projection signal is transmitted to the display module through the processing chip, so that the video data in the media stream data is displayed through the display module. In addition, the network signal received from the communication network module is processed by the signal processing module to obtain a shared network signal, and the shared network signal is transmitted to the external device through the transmission interface, which can simultaneously realize the transmission of the projection signal and the sharing of the network resources of the interactive display device.

[0052] In addition, the network signal is transmitted to the processing chip through the communication network module, and the network signal is transmitted to the signal processing module, and then the shared network signal obtained by processing the network information is transmitted to the external device through the transmission interface by the signal processing module. This can achieve the isolation of the network signal used by the interactive display device itself and the network signal shared with the external device, avoiding signal interference, thereby improving the network access convenience of the external devices connected to the interactive display device when projecting content, and providing users with an efficient and convenient multi-device collaborative work experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0054] Figure 1 is a schematic structural diagram of an interactive display device provided in an embodiment of the present application;

[0055] Figure 2 is a schematic structural diagram of an optional interactive display device provided in an embodiment of the present application;

[0056] Figure 3 is a schematic structural diagram of an interactive display system provided in an embodiment of the present application;

[0057] Figure 4 is a schematic flow chart of an interactive display method provided in an embodiment of the present application;

[0058] Figure 5 This is a structural diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0059] In the following description, specific details such as specific system structures and techniques are provided for purposes of illustration rather than limitation to facilitate a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid obscuring the description of the present application with unnecessary detail.

[0060] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections thereof.

[0061] It should also be understood that in the description of this application, unless otherwise specified, the “ / ” used in the specification of this application and the appended claims indicates that the objects associated with each other are in an “or” relationship. For example, A / B can represent A or B. The “and / or” in this application is merely a description of the association relationship of the associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. In addition, in the description of this application, unless otherwise specified, “multiple” means two or more than two. “At least one of the following items” or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or plural.

[0062] In addition, to facilitate a clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish between identical or similar items with substantially the same functions and effects. Those skilled in the art will understand that words such as "first" and "second" do not limit the quantity or execution order, but are only used to distinguish the description. In addition, words such as "first" and "second" do not necessarily define differences, nor should they be understood to indicate or imply relative importance.

[0063] As used in this specification and the appended claims, the term "if" can be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "upon determination" or "in response to determining" or "upon detection of [described condition or event]" or "in response to detecting [described condition or event]," depending on the context.

[0064] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof all mean "including but not limited to," unless otherwise specifically emphasized.

[0065] Taking the screen projection scenario as an example, the user plugs the external device (such as a computer, game console, mobile phone) into the input port via an HDMI cable or Type-C cable, connects it to the interactive display device (such as a TV, projector, monitor and other large-screen display devices), and then realizes the transmission of picture and sound signals according to relevant interface protocols such as the HDMI standard protocol, thereby presenting the image and audio of the external device on the interactive display device.

[0066] However, if an external device needs to connect to the internet, it still needs to search for and connect to a wireless network through its own Wi-Fi module, or use a network cable to connect directly to the network interface on the device (if available). Even though some devices have powerful and multifunctional Type-C interfaces, such as supporting high-speed data transmission, video output, and even power supply, they do not integrate the function of sharing the network through this interface in terms of network connection. As a result, when external devices use network resources to display content on the screen, they still need to rely on independent network access methods.

[0067] The present application provides an embodiment of an interactive display device, please refer to Figure 1 As shown, Figure 1 The schematic structure diagram of an interactive display device provided by the present application is shown. The interactive display device 100 includes: a transmission interface 101, a processing chip 102, a display module 103, a communication network module 104, and a signal processing module 105, wherein:

[0068] The transmission interface 101 is connected to the processing chip 102 and is used to transmit the screen projection signal from the external device to the processing chip when the external device 200 is connected to the transmission interface via a data line.

[0069] The processing chip 102 is connected to the display module 103 and is used to transmit the media stream data carried in the screen projection signal to the display module so that the video data in the media stream data can be displayed through the display module.

[0070] The communication network module 104 is connected to the processing chip 102 and is used to transmit network signals to the processing chip so that the interactive display device can be connected to the network.

[0071] The signal processing module 105 is connected to the communication network module 104 and the transmission interface 101 respectively, and is used to receive the network signal from the communication network module and transmit the shared network signal obtained by processing the network signal to the external device 200 via the transmission interface.

[0072] Optionally, the above-mentioned external device can be a mobile phone, a tablet computer, a wearable electronic device, an in-vehicle electronic device, an augmented reality (AR) device, a virtual reality (VR) device, a laptop computer, an ultra-mobile personal computer (UMPC), a netbook, a personal digital assistant (PDA), and other devices that are compatible with the Type-C interface.

[0073] Optionally, the above-mentioned interactive display device can be a projector, a smart screen, an interactive screen (such as an infrared interactive large screen, a capacitive interactive large screen, etc.), a business conference machine, a personal computer (Personal Computer All-in-One, PC) all-in-one machine, an advertising machine, an educational machine, a television, etc.

[0074] In the embodiment of the present application, the interactive display device realizes the screen projection signal processing and network sharing functions through the coordinated work of the transmission interface, processing chip, display module, communication network module, switch chip and signal processing module. The following describes the implementation methods of screen projection signal processing and network connection and sharing respectively:

[0075] In some optional embodiments, the screen projection signal processing process may include, but is not limited to, the following: an external device (such as a laptop computer, tablet computer) is connected to a transmission interface (such as a Type-c interface) via a data cable (such as a Type-C data cable). The transmission interface supports forward and reverse insertion, and automatically detects the device connection status through the CC line. It is compatible with video transmission protocols such as the DisplayPort protocol or the High-Definition Multimedia Interface protocol (HDMI), and can therefore receive and transmit screen projection signals from external devices. In addition, the transmission interface has a built-in protocol conversion chip (such as a DisplayPort→HDMI converter), which can convert the screen projection signal in DisplayPort (DP) format output by the external device into a screen projection signal in HDMI format, so that the subsequent processing chip can parse the screen projection signal.

[0076] The transmission interface transmits the received projection signal to the processing chip. The processing chip, acting as the core control unit of the interactive display device, decodes the projection signal to obtain the media stream data contained in the projection signal. The processing chip extracts the video data from the media stream and transmits it to the display module. The display module, consisting of components such as an LCD panel and a driver circuit, converts the video data into a visual image for display, achieving the technical effect of projecting video data from an external device onto the interactive display device.

[0077] In some optional embodiments, the display module may also include a backlight driving circuit and a timing controller. The backlight driving circuit is used to control the screen brightness, and the timing controller ensures that the video data can be displayed in the correct timing to ensure the smoothness and stability of the displayed image.

[0078] In some optional embodiments, the network connection and sharing process may include, but is not limited to, the following:

[0079] The communication network module can use a Wi-Fi module or a wired network card to achieve network connection. In one embodiment, when the Wi-Fi module is used, the wireless network signal is received by the antenna and transmitted to the processing chip via the USB3.0_HUB module, so that the interactive display device has the ability to access the Internet. For example, Figure 2 As shown, after receiving the wireless network signal, the Wi-Fi module transmits the wireless network signal to the USB3.0_HUB module (e.g., through the USB3.0 interface). The USB3.0_HUB module integrates and forwards the wireless network signal, and transmits the resulting wireless network signal to the USB controller in the processing chip, enabling the interactive display device to achieve networking functionality.

[0080] In another embodiment, if a wired network card is used, the Ethernet interface (such as Figure 2 Wired_Connection_IN) shown as access to wired network signal.

[0081] In some embodiments, the signal processing module can convert the received network signal into a predetermined format, for example, the USB2.0 format, to facilitate data transmission between the interactive display device and the external device; the signal processing module can also perform path switching processing on the format-converted network signal according to system settings or signal transmission requirements, and finally transmit the processed shared network signal back to the external device via the transmission interface.

[0082] As a result, external devices can share the network resources of the interactive display device and realize network connection function while projecting the screen on the interactive display device through the same data cable.

[0083] Through the interactive display device provided in the embodiment of the present application, the external device is connected to the transmission interface of the interactive display device through a single data line, and the screen projection signal from the external device is transmitted to the processing chip through the transmission interface, and the media stream data carried in the screen projection signal is transmitted to the display module through the processing chip, so that the video data in the media stream data is displayed through the display module. In addition, the network signal received from the communication network module is processed by the signal processing module to obtain a shared network signal, and the shared network signal is transmitted to the external device through the transmission interface, which can simultaneously realize the transmission of the screen projection signal and the sharing of the network resources of the interactive display device.

[0084] In addition, the network signal is transmitted to the processing chip through the communication network module, and the network signal is transmitted to the signal processing module, and then the shared network signal obtained by processing the network information is transmitted to the external device through the transmission interface by the signal processing module. This can achieve the isolation of the network signal used by the interactive display device itself and the network signal shared with the external device, avoiding signal interference, thereby improving the network access convenience of the external devices connected to the interactive display device when projecting content, and providing users with an efficient and convenient multi-device collaborative work experience.

[0085] The embodiments of the present application can be applied to various scenarios such as education and teaching, business meetings, exhibitions, etc., effectively reducing the complexity of connections between devices and improving usage efficiency and user experience. For example, in an educational scenario, a teacher uses a notebook to connect to an interactive display device via a Type-C cable, while simultaneously projecting courseware and accessing campus network resources (such as online question banks and teaching videos). For another example, in a conference scenario, participants connect to the large screen through their mobile phones / tablets, share the conference room network while projecting the screen, and access cloud documents or video conferencing systems in real time. For another example, during the interaction in the exhibition hall, visitors use their own devices to connect to the interactive large screen, project their personal works, and access the exhibition hall's intranet to obtain exhibit information without having to manually connect to Wi-Fi.

[0086] In a possible implementation, the interactive display device further includes a switch chip.

[0087] The switch chip connects the communication network module and divides the network signal into two paths.

[0088] The switch chip is also connected to the processing chip and the signal processing module, and is used to transmit one network signal to the processing chip and another network signal to the signal processing module.

[0089] Optionally, the communication network module can also transmit the acquired network signal to the switch chip. The switch chip acts as a signal distribution hub and divides the received network signal into two paths: one network signal is transmitted to the processing chip after conversion and processing to ensure that the interactive display device itself can be connected to the Internet; the other network signal is transmitted to the signal processing module.

[0090] For example, still Figure 2 As shown, taking the communication network module as a Wi-Fi module as an example, the Wi-Fi module sends the wireless network signal to the processing chip. The processing chip converts the wireless network signal into USB2.0 format through the plug-and-play interface, namely the USB2.0-OTG (On-The-Go) interface, and then sends it to the Ethernet→USB3.0 module (first signal conversion module). The Ethernet→USB3.0 module converts the USB2.0 format signal into an Ethernet signal and transmits it to the switch chip.

[0091] In some embodiments, Figure 2 As shown, the switch chip divides the received wireless network signal into two paths. One network signal is transmitted to the processing chip for the interactive display device to use for networking. The other network signal is converted into a USB2.0 signal through the Ethernet→USB2.0 module (second signal conversion module), and the converted USB2.0 signal is transmitted to the USB2.0_SW module (signal switching module). The USB2.0_SW module switches the path of the converted USB2.0 signal and transmits the final shared network signal to the USB data channel of the Type-c interface. Then, the Type-c interface transmits the shared network signal back to the external device through the Type-c data cable, thereby realizing the function of external devices sharing the interactive display device network.

[0092] In the interactive display device provided in the embodiment of the present application, the specific implementation of the communication network module includes the following two types, which can be selected according to the actual application scenario:

[0093] The Wi-Fi module is used to receive wireless network signals and transmit the wireless network signals to the processing chip through the hub module, so that the interactive display device can connect to the wireless network signal.

[0094] The wired network card is used to receive a wired network signal and transmit the wired network signal to the switch chip. The switch chip transmits one wired network signal to the processing chip via the first signal conversion module, so that the interactive display device is connected to the wired network signal.

[0095] In some optional embodiments, the Wi-Fi module (for example, a Wi-Fi 6E chipset, supporting 2.4G / 5G / 6G triple bands) includes a wireless network card, an antenna, and related driving circuits, and receives wireless network signals through the IEEE802.11 protocol. Figure 2 As shown, the Wi-Fi module is connected to the processing chip through a USB3.0_HUB module (i.e., a hub module, such as a Universal Serial Bus 3.0 hub module). The USB3.0_HUB module supports multi-channel USB device expansion and can transmit data and power at the same time.

[0096] For example, after receiving a wireless network signal, the Wi-Fi module transmits the wireless network signal to the USB3.0_HUB module via the USB3.0 interface. The USB3.0_HUB module then performs protocol conversion and electrical adaptation on the wireless network signal, converting it into a USB data format recognizable by the processing chip, and ultimately transmitting it to the processing chip. The processing chip, by running the network protocol stack software, parses the wireless network signal and establishes a network connection, enabling the interactive display device to access the wireless network. It should be understood that this optional implementation is particularly suitable for application scenarios without a fixed network interface or requiring flexible mobility, but is not limited to such scenarios.

[0097] In some optional embodiments, the wired network card uses an Ethernet interface (e.g., an RJ45 interface) to directly connect to an external network device (e.g., a router or switch) to obtain wired network signals. The wired network card is connected to the physical layer (PHY) interface of the switch chip. The switch chip has a built-in MAC (Media Access Control) controller that supports the IEEE 802.3 communication protocol and can perform frame parsing, address recognition, and data forwarding on the wired network signal.

[0098] The processed wired network signal is transmitted to the processing chip via a first signal conversion module (e.g., an Ethernet to USB 3.0 module). This first signal conversion module converts the Ethernet signal into the USB 3.0 protocol format, including signal encoding conversion, level adaptation, and protocol encapsulation. The processing chip receives the converted network signal and establishes a wired network connection through a network driver. It should be understood that this optional implementation provides a more stable network transmission rate and is suitable for scenarios with high network bandwidth requirements, but is not limited to such scenarios.

[0099] As an optional embodiment, in a scenario where both a Wi-Fi module and a wired network card are configured, the system implements dual-mode collaboration through the following mechanisms:

[0100] Priority control: By default, wired network connection takes priority over Wi-Fi connection. When a wired network is available, the interactive display device automatically switches to the wired network.

[0101] Load balancing: The switch chip supports traffic diversion function, and the interactive display device can distribute different types of data to different network channels (such as video streams transmitted through wired networks, control signals transmitted through Wi-Fi modules, etc.).

[0102] Failover: When the wired network is interrupted, the interactive display device can automatically switch to the Wi-Fi network to ensure the continuity of the network connection.

[0103] Through the above optional embodiments, the communication network module can be flexibly configured with multiple network access methods, which not only meets the high-speed and stable network requirements in fixed places, but also supports wireless connections in mobile scenarios, significantly improving the applicability and reliability of interactive display devices.

[0104] In one possible implementation, the interactive display device further includes:

[0105] The plug-and-play interface is connected to the processing chip and the first signal conversion module respectively, and is used to send the wireless network signal converted by the first signal conversion module to the processing chip.

[0106] In the extended implementation scheme of the interactive display device, after capturing the wireless network signal, the Wi-Fi module transmits the wireless network signal to the plug-and-play interface (i.e., USB2.0-OTG (On-The-Go) interface) through the USB interface. The USB2.0-OTG interface first performs protocol adaptation and electrical characteristic adjustment on the wireless network signal so that the wireless network signal meets the transmission requirements of the USB2.0 standard. Subsequently, the USB2.0-OTG interface transmits the processed wireless network signal to the Ethernet→USB3.0 module (first signal conversion module). The Ethernet→USB3.0 module further converts the received wireless network signal from the USB2.0 format to a format suitable for Ethernet transmission, and simultaneously completes operations such as signal level conversion and encoding conversion so that the wireless network signal meets the input requirements of the switch chip.

[0107] After receiving the converted wireless network signal, the switch chip, acting as the core distribution unit for the network signal, performs frame parsing, address identification, and traffic distribution based on its internal media access control (MAC) controller and switching matrix. After processing by the switch chip, a portion (or one path) of the wireless network signal is transmitted via a specific path to the processing chip, enabling wireless network connectivity for the interactive display device itself. The remaining portion (or another path) of the wireless network signal is transmitted to the signal processing module for subsequent network sharing, ultimately enabling network sharing access for external devices via the transmission interface.

[0108] By introducing the USB2.0-OTG interface, this solution optimizes the transmission path of wireless network signals, reduces loss and interference during signal transmission, and improves the stability and compatibility of signal transmission.

[0109] In one possible implementation, the signal processing module includes:

[0110] The second signal conversion module is connected to the switch chip and is used to perform signal conversion processing on the network signal to obtain a signal after the conversion format; the signal switching module is respectively connected to the second signal conversion module and the transmission interface, and is used to perform signal switching processing on the signal after the conversion format, and transmit the obtained shared network signal to the transmission interface.

[0111] In the signal processing architecture of the interactive display device provided in the embodiment of the present application, the signal processing module implements the format conversion and path optimization of the network signal through a two-stage processing mechanism. The specific implementation is as follows:

[0112] In some optional embodiments, the second signal conversion module (Ethernet→USB2.0 module) uses a dedicated network conversion chip to convert the Ethernet signal (compliant with the IEEE802.3 protocol) output by the switch chip into the USB2.0 protocol format. The conversion process may include, but is not limited to:

[0113] First, Ethernet differential signals (such as RX+ / - and TX+ / -) are converted to USB 2.0 single-ended signals (D+ and D-), and their electrical characteristics (such as voltage amplitude and signal timing) are adapted. Next, the Ethernet frame format (including the MAC header and IP datagram) is parsed and repackaged into USB 2.0 packet formats (such as SETUP, IN, and OUT), adding the corresponding USB protocol descriptors. Finally, protocol adaptation enables data mapping between the Ethernet MAC layer and USB 2.0 endpoints, ensuring reliable network data transmission. For example, Ethernet broadcast frames are converted to USB control endpoint transmission, and unicast frames are converted to bulk endpoint transmission.

[0114] In some optional embodiments, the signal switching module (USB2.0_SW module) uses a multiplexing switch chip to realize the path selection and priority control of the signal after the format conversion. For example, first, based on the control signal (such as GPIO level or I2C instruction), the signal after the format conversion is routed to the transmission interface or other alternative paths (such as the internal test interface). After that, the USB2.0 bus status is monitored in real time. When it is detected that multiple devices request communication at the same time, the bus usage rights are allocated through the arbitration mechanism. Finally, based on the supported plug-and-play function, when an external device is connected through the transmission interface, the signal path is automatically switched and the device enumeration process is triggered.

[0115] In some optional embodiments, after the switch chip outputs the network signal, the Ethernet→USB2.0 module converts the Ethernet signal into the USB2.0 format, generating a USB data packet containing the network data. The USB2.0_SW module receives the converted signal and, based on the system configuration (such as the network sharing priority and the status of the external device), switches the converted signal to a specific channel of the transmission interface (such as the Configuration Channel of the Type-C interface, i.e., the CC line) to transmit the shared network signal to the external device via the data line while maintaining the screen projection signal transmission with the processing chip, thus achieving dual functions with a single cable.

[0116] In the embodiment of the present application, the interactive display device specifically supports multiple USB2.0 device class protocols (such as the remote network driver interface specification RNDIS and the Ethernet control model ECM), ensuring seamless compatibility with external devices of different operating systems (such as Windows, macOS, and Linux).

[0117] Through the above-mentioned signal processing module, efficient conversion and intelligent routing of network signals can be achieved, providing stable and reliable network sharing services for external devices, while maintaining collaborative work with the screen projection function, significantly improving the overall performance of interactive display devices.

[0118] In one possible implementation, the interactive display device further includes:

[0119] The decoding module is connected to the processing chip and is used to decode the projection signal and convert it into an analog audio signal; the op amp module is connected to the decoding module and is used to amplify the analog audio signal to obtain media stream data; the speaker module is connected to the op amp module and is used to output the audio data in the media stream data.

[0120] In the audio processing architecture of the interactive display device provided in the embodiment of the present application, Figure 2 As shown, the decoding module, operational amplifier module and speaker module work together to realize the decoding, amplification and playback of audio data in the projection signal.

[0121] In some optional embodiments, the decoding module can adopt an audio decoding chip to support multiple audio coding formats (such as PCM, AAC, MP3, FLAC). The decoding module receives a digital audio stream (such as transmitted through I2S, TDM or SPDIF interface) from the processing chip, and parses the audio data packet header information to obtain parameters such as sampling rate, bit depth, number of channels, etc. Afterwards, the corresponding decoding algorithm is called according to the coding format to restore the compressed audio data to the original PCM format. For example, for the audio stream encoded by AAC, the decoding chip performs operations such as ADTS frame parsing and MDCT inverse transformation through the DSP core. Finally, the built-in high-precision DAC (digital-to-analog converter, such as 24 bits / 192kHz) of the decoding module is adopted to convert the PCM digital signal into an analog audio signal, and filter processing is performed to reduce quantization noise.

[0122] In some optional embodiments, the op amp module utilizes a power amplifier chip to amplify the low-level analog audio signal output by the decoding module. For example, a low-noise operational amplifier (such as the LM4562) performs preliminary amplification of the weak analog audio signal to match the input sensitivity of the power amplifier. The module can also support volume adjustment, receiving gain control commands from the processing chip via an I2C interface to achieve linear volume adjustment within a range of 0-100dB.

[0123] In some optional embodiments, the speaker module adopts a multi-channel sound system (such as 2.0 channels or 2.1 channels) and includes the following components:

[0124] Main speaker: uses a mid-bass unit (such as a 4-inch full-range speaker) to play mid-frequency (200Hz-5kHz) and low-frequency (20Hz-200Hz) audio, with a built-in magnetic shielding structure to avoid interference with the display module.

[0125] Tweeter: Uses a silk membrane tweeter (such as a 1-inch dome tweeter), which is responsible for high-frequency (5kHz-20kHz) audio playback, enhancing sound details and transparency.

[0126] Audio cavity: adopts a closed or inverted box structure to enhance low-frequency response, reduce sound coloration, and absorb internal standing waves through damping materials (such as sound-absorbing cotton).

[0127] In some optional embodiments, when the processing chip receives the projection signal, it can extract the audio data stream (such as the AAC audio track in the H.264 / HEVC video stream) from the projection signal and transmit it to the decoding module through the I2S bus. The decoding module decodes the digital audio stream into PCM format and then converts it into an analog audio signal (such as the left / right channel differential signal). The op amp module performs multi-stage amplification on the analog audio signal and adjusts the gain to match the rated power of the speaker. The speaker module converts the amplified electrical signal into sound waves to achieve audio playback.

[0128] Through the above-mentioned optional embodiments, high-quality audio signal decoding and playback can be achieved, providing users with a clear and immersive audio-visual experience. At the same time, by optimizing circuit design and algorithm processing, power consumption and electromagnetic interference can be effectively reduced, ensuring stability when working in collaboration with display modules, network modules, etc.

[0129] In a possible implementation, the processing chip is used to determine video data and audio data in the media stream data.

[0130] Still Figure 2 As shown, the interactive display device also includes: an image transmission interface, connected to the processing chip and the display module, for transmitting video data in the media stream data to the display module; a storage module, connected to the processing chip, for storing the media stream data.

[0131] In some embodiments, a multimedia processing engine may be built into the processing chip to parse the media stream data through the following steps: perform protocol parsing on the received projection signal to extract the media stream information (such as video encoding format, audio encoding format, timestamp, etc.). Afterwards, based on the container format (such as MP4, MKV) or the transmission protocol (such as RTP), the composite media stream is separated into independent video data and audio data. For example, by parsing the H.264 / HEVCNAL unit header, the video frame type (I / P / B frame) is identified; by parsing the AACADTS header, the audio sampling rate and channel configuration are obtained. The separated video data is converted into a format supported by the display module (such as RGB, YCbCr), and the audio data is converted into a format supported by the decoding module (such as PCM, SPDIF).

[0132] In some optional embodiments, the image transmission interface uses a high-speed differential transmission protocol and can support MIPI DSI (Mobile Industry Processor Interface Display Serial Interface) or eDP (Embedded DisplayPort) protocols, with a maximum transmission rate of up to 10Gbps, meeting the requirements of 4K@60Hz video transmission. In addition, the image transmission interface can also have a built-in equalizer and pre-emphasis circuit to compensate for signal attenuation caused by long-distance transmission and ensure the reliability of high-speed data transmission.

[0133] In some optional embodiments, the storage module may adopt a hierarchical storage architecture including the following components:

[0134] Cache: Use memory with a capacity of 4GB and a bandwidth of 34.1GB / s as the running memory of the processing chip to cache the media stream data frames processed in real time.

[0135] Non-volatile storage: uses flash memory with a capacity of 64GB / 128GB, supports recording storage: real-time storage of screen projection content in H.265 encoding format, with a recording rate of up to 100Mbps, and system storage: stores the operating system, drivers and applications, and supports fast startup (cold startup time <8 seconds).

[0136] In some optional embodiments, after the processing chip completes the separation of the media stream data, the processing chip sends the video data to the display module through the image transmission interface (such as eDP) for display, and the processing chip can also synchronously send the audio data to the decoding module through the I2S interface or SPDIF interface for audio processing.

[0137] In addition, the processing chip can also write media stream data (or its summary information) into the storage module. During the storage process, independent redundant disk array RAID0 / 1 technology is used to improve read and write performance, while CRC verification is used to ensure data reliability.

[0138] Through the embodiments of the present application, the processing chip, image transmission interface and storage module can jointly construct an efficient media stream data processing and storage solution, which not only meets the real-time display requirements but also provides data storage capabilities, providing solid support for the application of interactive display devices in scenarios such as meeting recording and teaching resource preservation.

[0139] In one possible implementation, the transmission interface includes a Type-c interface, and the data cable includes a Type-c data cable; the Type-c interface is used to receive the projection signal transmitted by the external device via the Type-c data cable; the processing chip also includes: an HDMI interface, connected to the Type-c interface, for receiving the projection signal transmitted from the Type-c interface to the processing chip.

[0140] In an embodiment of the present application, the Type-C interface and the HDMI interface work together to achieve efficient reception and processing of screen projection signals from external devices.

[0141] Optionally, the Type-C port supports simultaneous transmission of video, audio, and USB data. It integrates a PD3.0 controller, supports up to 100W of power transmission, and enables bidirectional power supply. When the power demand of an external device (such as a laptop) exceeds that of the interactive display device, it acts as a powered device (Sink) to receive power; otherwise, it acts as a powered device (Source) to provide power.

[0142] In an optional embodiment, when an external device is connected to the Type-C interface via a Type-C data cable, the Type-C interface detects the device insertion via the CC line, sends a SOP' handshake signal to the external device, and negotiates the protocols supported by both parties for data transmission. The external device then transmits the projection signal (such as a 4K@60Hz DisplayPort signal) to the Type-C interface via the Type-C data cable.

[0143] The Type-C interface converts the DisplayPort signal into an HDMI signal and transmits it to the HDMI interface of the processing chip through a parallel interface. The HDMI interface parses the HDMI signal, extracts the video and audio data, and sends them to the display module and decoding module for processing respectively.

[0144] Through the above optional embodiments, seamless conversion and efficient processing of external device screen projection signals are achieved based on the Type-c interface and the HDMI interface, which not only maintains the versatility and flexibility of the Type-c interface, but also utilizes the maturity of the HDMI protocol in audio and video transmission, providing users with a convenient and high-quality screen projection experience.

[0145] In one possible implementation, the interactive display device includes:

[0146] The first motherboard (such as Figure 2 The motherboard 1 shown in the figure, but the schematic diagram only illustrates part of the first motherboard), is used to integrate the processing chip, image transmission interface, Type-c interface, HDMI interface, storage module, hub module (USB3.0_HUB module) and signal switching module (USB2.0_SW module) in the interactive display device.

[0147] The second motherboard (such as Figure 2 The motherboard 2 shown in the figure, but the schematic diagram only illustrates part of the second motherboard), is connected to the first motherboard (motherboard 1), and is used to integrate the Wi-Fi module, switch chip, first signal conversion module (Ethernet→USB3.0 module) and second signal conversion module (Ethernet→USB2.0 module) in the interactive display device.

[0148] The third motherboard (such as Figure 2The motherboard 3 shown in the figure, but the schematic diagram only illustrates part of the third motherboard), is connected to the first motherboard (mainboard 1) and is used to integrate the decoding module, operational amplifier module and speaker module in the interactive display device.

[0149] The power supply module is respectively connected to the first mainboard (mainboard 1), the second mainboard (mainboard 2), and the third mainboard (mainboard 3), and is used to supply power to the first mainboard (mainboard 1), the second mainboard (mainboard 2), and the third mainboard (mainboard 3).

[0150] Optionally, the first motherboard can be understood as the core control board, and the processing chip is connected to the Type-c interface and the HDMI interface through the PCIe4.0 bus, and is connected to the image transmission interface through MIPICS I-2 to ensure the video data transmission bandwidth (for example, a single-channel PCIe4.0 can reach 16GT / s).

[0151] Optionally, the second main board can be understood as a network processing board, and the Wi-Fi module and the switch chip are connected through an isolation transformer to reduce electromagnetic interference; the first signal conversion module (Ethernet→USB3.0 module) and the second signal conversion module (Ethernet→USB2.0 module) are powered by independent power domains to avoid interference of digital signals on analog signals.

[0152] In addition, in an optional embodiment, a copper heat sink is arranged under the high-power switch chip, combined with thermal conductive silicone in contact with the shell to achieve passive heat dissipation and ensure stable operation 24 hours a day.

[0153] The optional third mainboard can be considered an audio processing board. The analog front end of the decoding module uses an independent PCB partition design, separated from the digital circuit part by an isolation slot to reduce the impact of digital noise on the audio signal. The power input of the op amp module is configured with an LC filter network (10μH inductor + 220μF capacitor) to filter out power ripple and ensure pure power supply.

[0154] In some optional embodiments, the first and second motherboards can be connected via a USB 3.0 bus for network data transmission and an I2C bus (400kHz) for device control and status monitoring. The first and third motherboards transmit audio data via an I2S bus (supporting native DSD playback), and control volume and audio mode switching via an SPI bus, with a transmission rate of up to 10MHz.

[0155] In some optional embodiments, the power module may adopt a multi-output switching power supply, the input supports a wide voltage range of 100-240VAC, and the output may include but is not limited to:

[0156] 3.3V main power supply: supplies power to the logic circuit of the first mainboard, with a maximum current of 10A and a synchronous rectification Buck converter with a conversion efficiency of >92%.

[0157] 5V auxiliary power supply: Powers the network module and switch chip of the second motherboard, with a maximum current of 5A. Low noise is ensured by the ferrite beads and LC filtering network.

[0158] 12V audio power supply: supplies power to the op amp module of the third mainboard, with a maximum current of 3A and a low-noise LDO voltage regulator, with a ripple of <10mV.

[0159] As an optional embodiment, the connecting cables between the motherboards can use differential signal pairs and be wrapped with a shielding layer to reduce electromagnetic radiation. Grounding copper pillars are placed on the edges of each motherboard, and the metal shell forms a Faraday cage to improve anti-interference capabilities.

[0160] As another optional embodiment, a heat pipe heatsink is installed above the processing chip on the first motherboard, combined with an axial-flow fan to form a forced air cooling system with a heat dissipation power of up to 50W. The switch chip on the second motherboard transfers heat to the outer casing through thermal vias on the inner layer of the PCB, achieving passive heat dissipation.

[0161] Through the multi-motherboard distributed architecture and centralized power supply solution provided in the embodiment of the present application, the interactive display device realizes the physical isolation and collaborative work of functional modules, which not only improves the system reliability (such as a single motherboard failure does not affect other modules), but also facilitates production maintenance (the faulty motherboard can be replaced independently). At the same time, through optimized power management and heat dissipation design, the stability and performance of the device during long-term operation are ensured.

[0162] It should be noted that the interactive display device provided in the above embodiment is only illustrated by the division of the above functional modules. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0163] The functional units and modules in the above embodiments may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The above integrated units may be implemented in the form of hardware or software functional units. In addition, the specific names of the functional units and modules are only for the purpose of distinguishing them from each other and are not intended to limit the scope of protection of the embodiments of this application.

[0164] The present application also provides an interactive display system. Figure 3 As shown, Figure 3A schematic flow chart of an interactive display method provided by the present application is shown. The system includes: any interactive display device 100 in the above embodiments, and an external device 200 connected to the interactive display device 100, wherein:

[0165] The external device 200 is used to transmit the screen projection signal to the interactive display device when connected to the transmission interface of the interactive display device.

[0166] The interactive display device 100 is used to display the video data in the media stream data carried in the projection signal; and after performing signal conversion and signal switching processing on the local network signal, the obtained shared network signal is transmitted to the external device through the transmission interface.

[0167] The interactive display system provided in the embodiment of the present application enables bidirectional transmission of data and network between the external device and the interactive display device through a single transmission interface, thereby realizing both screen projection and network sharing solutions.

[0168] Optionally, the external device may be a mobile phone, a tablet computer, a wearable electronic device, an in-vehicle electronic device, an augmented reality (AR) device, a virtual reality (VR) device, a laptop computer, an ultra-mobile personal computer (UMPC), a netbook, a personal digital assistant (PDA), etc.

[0169] Optionally, the above-mentioned interactive display device can be a projector, a smart screen, an interactive screen (such as an infrared interactive large screen, a capacitive interactive large screen, etc.), a business conference machine, a personal computer (Personal Computer All-in-One, PC) all-in-one machine, an advertising machine, an educational machine, a television, etc.

[0170] In the embodiment of the present application, the interactive display device realizes the screen projection signal processing and network sharing functions through the coordinated work of the transmission interface, processing chip, display module, communication network module, switch chip and signal processing module. The following describes the implementation methods of screen projection signal processing and network connection and sharing respectively:

[0171] In some optional embodiments, the screen projection signal processing process may include, but is not limited to, the following: an external device (such as a laptop computer, tablet computer) is connected to a transmission interface (such as a Type-c interface) via a data cable (such as a Type-C data cable). The transmission interface supports forward and reverse insertion, and automatically detects the device connection status through the CC line. It is compatible with video transmission protocols such as the DisplayPort protocol or the High-Definition Multimedia Interface protocol (HDMI), and can therefore receive and transmit screen projection signals from external devices. In addition, the transmission interface has a built-in protocol conversion chip (such as a DisplayPort→HDMI converter), which can convert the screen projection signal in DisplayPort (DP) format output by the external device into a screen projection signal in HDMI format, so that the subsequent processing chip can parse the screen projection signal.

[0172] The transmission interface transmits the received projection signal to the processing chip. The processing chip, acting as the core control unit of the interactive display device, decodes the projection signal to obtain the media stream data contained in the projection signal. The processing chip extracts the video data from the media stream and transmits it to the display module. The display module, consisting of components such as an LCD panel and a driver circuit, converts the video data into a visual image for display, achieving the technical effect of projecting video data from an external device onto the interactive display device.

[0173] In some optional embodiments, the display module may also include a backlight driving circuit and a timing controller. The backlight driving circuit is used to control the screen brightness, and the timing controller ensures that the video data can be displayed in the correct timing to ensure the smoothness and stability of the displayed image.

[0174] In some optional embodiments, the network connection and sharing process may include, but is not limited to, the following:

[0175] The communication network module can use a Wi-Fi module or a wired network card to achieve network connection. In one embodiment, when the Wi-Fi module is used, the wireless network signal is received by the antenna and transmitted to the processing chip via the USB3.0_HUB module, so that the interactive display device has the ability to access the Internet. For example, Figure 2 As shown, after receiving wireless network signals, the Wi-Fi module transmits the signals to the USB3.0_HUB module via the USB3.0 interface. The USB3.0_HUB module integrates and forwards the signals, transmitting them to the USB controller of the processing chip, enabling the interactive display device to achieve networking functionality. In another embodiment, if a wired network card is used, the wired network signal is directly connected through the Ethernet interface.

[0176] In some embodiments, the signal processing module can convert the received network signal into a predetermined format, for example, the USB2.0 format, to facilitate data transmission between the interactive display device and the external device; the signal processing module can also perform path switching processing on the format-converted network signal according to system settings or signal transmission requirements, and finally transmit the processed shared network signal back to the external device via the transmission interface.

[0177] As a result, external devices can share the network resources of the interactive display device and realize network connection function while projecting the screen on the interactive display device through the same data cable.

[0178] Through the interactive display system provided in the embodiment of the present application, the external device is connected to the transmission interface of the interactive display device through a single data line, the screen projection signal from the external device is transmitted to the processing chip through the transmission interface, and the media stream data carried in the screen projection signal is transmitted to the display module through the processing chip, so that the video data in the media stream data is displayed through the display module. In addition, the network signal received from the communication network module is processed by the signal processing module to obtain a shared network signal, and the shared network signal is transmitted to the external device through the transmission interface, which can simultaneously realize the transmission of the screen projection signal and the sharing of the network resources of the interactive display device.

[0179] In addition, the network signal is transmitted to the processing chip through the communication network module, and the network signal is transmitted to the signal processing module, and then the shared network signal obtained by processing the network information is transmitted to the external device through the transmission interface by the signal processing module. This can achieve the isolation of the network signal used by the interactive display device itself and the network signal shared with the external device, avoiding signal interference, thereby improving the network access convenience of the external devices connected to the interactive display device when projecting content, and providing users with an efficient and convenient multi-device collaborative work experience.

[0180] The embodiments of the present application can be applied to various scenarios such as education and teaching, business meetings, exhibitions, etc., effectively reducing the complexity of connections between devices and improving usage efficiency and user experience. For example, in an educational scenario, a teacher uses a notebook to connect to an interactive display device via a Type-C cable, while simultaneously projecting courseware and accessing campus network resources (such as online question banks and teaching videos). For another example, in a conference scenario, participants connect to the large screen through their mobile phones / tablets, share the conference room network while projecting the screen, and access cloud documents or video conferencing systems in real time. For another example, during the interaction in the exhibition hall, visitors use their own devices to connect to the interactive large screen, project their personal works, and access the exhibition hall's intranet to obtain exhibit information without having to manually connect to Wi-Fi.

[0181] The present application also provides an interactive display method, which is applied to any interactive display device. Figure 4 As shown, Figure 4 A schematic flow chart of an interactive display method provided by the present application is shown, the method comprising:

[0182] S401, when the external device is connected to the transmission interface of the interactive display device, receiving a screen projection signal from the external device.

[0183] S402, displaying the video data in the media stream data carried in the screen projection signal; and

[0184] S403 , after performing signal conversion processing and signal switching processing on the local network signal, the obtained shared network signal is transmitted to the external device via the transmission interface.

[0185] Optionally, the external device may be a mobile phone, a tablet computer, a wearable electronic device, an in-vehicle electronic device, an augmented reality (AR) device, a virtual reality (VR) device, a laptop computer, an ultra-mobile personal computer (UMPC), a netbook, a personal digital assistant (PDA), etc.

[0186] Optionally, the above-mentioned interactive display device can be a projector, a smart screen, an interactive screen (such as an infrared interactive large screen, a capacitive interactive large screen, etc.), a business conference machine, a personal computer (Personal Computer All-in-One, PC) all-in-one machine, an advertising machine, an educational machine, a television, etc.

[0187] In the embodiment of the present application, the interactive display device realizes the screen projection signal processing and network sharing functions through the coordinated work of the transmission interface, processing chip, display module, communication network module, switch chip and signal processing module. The following describes the implementation methods of screen projection signal processing and network connection and sharing respectively:

[0188] In some optional embodiments, the screen projection signal processing process may include, but is not limited to, the following: an external device (such as a laptop computer, tablet computer) is connected to a transmission interface (such as a Type-c interface) via a data cable (such as a Type-C data cable). The transmission interface supports forward and reverse insertion, and automatically detects the device connection status through the CC line. It is compatible with video transmission protocols such as the DisplayPort protocol or the High-Definition Multimedia Interface protocol (HDMI), and can therefore receive and transmit screen projection signals from external devices. In addition, the transmission interface has a built-in protocol conversion chip (such as a DisplayPort→HDMI converter), which can convert the screen projection signal in DisplayPort (DP) format output by the external device into a screen projection signal in HDMI format, so that the subsequent processing chip can parse the screen projection signal.

[0189] The transmission interface transmits the received projection signal to the processing chip. The processing chip, acting as the core control unit of the interactive display device, decodes the projection signal to obtain the media stream data contained in the projection signal. The processing chip extracts the video data from the media stream and transmits it to the display module. The display module, consisting of components such as an LCD panel and a driver circuit, converts the video data into a visual image for display, achieving the technical effect of projecting video data from an external device onto the interactive display device.

[0190] In some optional embodiments, the display module may also include a backlight driving circuit and a timing controller. The backlight driving circuit is used to control the screen brightness, and the timing controller ensures that the video data can be displayed in the correct timing to ensure the smoothness and stability of the displayed image.

[0191] In some optional embodiments, the network connection and sharing process may include, but is not limited to, the following:

[0192] The communication network module can use a Wi-Fi module or a wired network card to achieve network connection. In one embodiment, when the Wi-Fi module is used, the wireless network signal is received by the antenna and transmitted to the processing chip via the USB3.0_HUB module, so that the interactive display device has the ability to access the Internet. For example, Figure 2 As shown, after receiving wireless network signals, the Wi-Fi module transmits the signals to the USB3.0_HUB module via the USB3.0 interface. The USB3.0_HUB module integrates and forwards the signals, transmitting them to the USB controller of the processing chip, enabling the interactive display device to achieve networking functionality. In another embodiment, if a wired network card is used, the wired network signal is directly connected through the Ethernet interface.

[0193] In some embodiments, the signal processing module can convert the received network signal into a predetermined format, for example, the USB2.0 format, to facilitate data transmission between the interactive display device and the external device; the signal processing module can also perform path switching processing on the format-converted network signal according to system settings or signal transmission requirements, and finally transmit the processed shared network signal back to the external device via the transmission interface.

[0194] As a result, external devices can share the network resources of the interactive display device and realize network connection function while projecting the screen on the interactive display device through the same data cable.

[0195] The interactive display method provided by the embodiment of the present application is applied to an interactive display device, and the external device is connected to the transmission interface of the interactive display device through a single data line, and the screen projection signal from the external device is transmitted to the processing chip through the transmission interface, and the media stream data carried in the screen projection signal is transmitted to the display module through the processing chip, so that the video data in the media stream data is displayed through the display module. In addition, the network signal received from the communication network module is processed by the signal processing module to obtain a shared network signal, and the shared network signal is transmitted to the external device via the transmission interface, which can simultaneously realize the transmission of the screen projection signal and the sharing of the network resources of the interactive display device.

[0196] In addition, the network signal is transmitted to the processing chip through the communication network module, and the network signal is transmitted to the signal processing module, and then the shared network signal obtained by processing the network information is transmitted to the external device through the transmission interface by the signal processing module. This can achieve the isolation of the network signal used by the interactive display device itself and the network signal shared with the external device, avoiding signal interference, thereby improving the network access convenience of the external devices connected to the interactive display device when projecting content, and providing users with an efficient and convenient multi-device collaborative work experience.

[0197] The embodiments of the present application can be applied to various scenarios such as education and teaching, business meetings, exhibitions, etc., effectively reducing the complexity of connections between devices and improving usage efficiency and user experience. For example, in an educational scenario, a teacher uses a notebook to connect to an interactive display device via a Type-C cable, while simultaneously projecting courseware and accessing campus network resources (such as online question banks and teaching videos). For another example, in a conference scenario, participants connect to the large screen through their mobile phones / tablets, share the conference room network while projecting the screen, and access cloud documents or video conferencing systems in real time. For another example, during the interaction in the exhibition hall, visitors use their own devices to connect to the interactive large screen, project their personal works, and access the exhibition hall's intranet to obtain exhibit information without having to manually connect to Wi-Fi.

[0198] It is understood that the interactive display method embodiment and any implementation thereof correspond to the interactive display device embodiment and any implementation thereof, respectively. The technical effects corresponding to the interactive display method embodiment and any implementation thereof can be referred to the technical effects corresponding to the above-mentioned interactive display device embodiment and any implementation thereof, and will not be repeated here.

[0199] It should still be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0200] An embodiment of the present application further provides an electronic device, the electronic device comprising one or more processors and a memory;

[0201] The memory is coupled to one or more processors, and the memory is used to store computer program code, which includes computer instructions. The one or more processors call the computer instructions to enable the electronic device to execute the interactive display method shown above.

[0202] Figure 5 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. The electronic device 700 can be a mobile phone, a smart screen, a tablet computer, a wearable electronic device, an in-vehicle electronic device, an augmented reality (AR) device, a virtual reality (VR) device, a laptop computer, an ultra-mobile personal computer (UMPC), a netbook, a personal digital assistant (PDA), a projector, or a communication device such as a server, a storage device, a base station, or a smart car. The embodiments of the present application do not impose any restrictions on the specific type of electronic device.

[0203] The memory 701 can be used to store computer software programs 702 and modules. The processor 703 executes various functional applications and data processing of the electronic device by running the software programs and modules stored in the memory 701. The memory 701 can mainly include a program storage area and a data storage area. The program storage area can store an operating system, at least one application required for a function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area can store data created based on the use of the electronic device (such as audio data, a phone book, etc.). In addition, the memory 701 can include a high-speed random access memory and can also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage device.

[0204] Among them, the processor 703 may include one or more processors such as a central processing unit, an application processor (AP), and a baseband processor. The processor can be the nerve center and command center of the wireless router. The processor 703 can generate operation control signals based on the instruction operation code and timing signals to complete the control of instruction fetching and execution. The memory 701 can be used to store computer executable program code, and the executable program code includes instructions. The processor 703 executes various functional applications and data processing of the network device by running the instructions stored in the memory. The memory 701 may include a program storage area and a data storage area, such as storing data of a sound signal to be played. For example, the memory can be a double data rate synchronous dynamic random access memory DDR or a flash memory.

[0205] An embodiment of the present application further provides a computer-readable storage medium, in which computer instructions are stored; when the computer-readable storage medium is run on an electronic device, the electronic device executes the interactive display method shown above.

[0206] The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media. The available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium, or a semiconductor medium (e.g., a solid-state disk (SSD)).

[0207] An embodiment of the present application also provides a computer program product including computer instructions. When the computer program product is run on an electronic device, the electronic device can execute the interactive display method shown above.

[0208] The computer storage medium and computer program product provided in the above-mentioned embodiments of the present application are used to execute the method provided above. Therefore, the beneficial effects that can be achieved can refer to the corresponding beneficial effects of the method provided above, and will not be repeated here.

[0209] In the above embodiments, it can also be implemented in whole or in part by software, hardware, firmware or any combination thereof. When software is used for implementation, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website, computer, server or data center to another website, computer, server or data center via a wired (such as a coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that a computer can access, or a data storage device such as a server or data center that includes one or more available media integrations. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), a random access memory (RAM), a flash memory (Flash Memory), a hard disk (HDD) or a solid-state drive (SSD), etc. The storage medium may also include a combination of the above types of memory.

[0210] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0211] Those skilled in the art will appreciate that the units and algorithm steps of the various embodiments described in conjunction with the embodiments applied for herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0212] In the embodiments provided in this application, it should be understood that the disclosed devices / network equipment and methods can be implemented in other ways. For example, the device / network equipment embodiments described above are merely illustrative. For example, the division of the modules or units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0213] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0214] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. 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 make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. An interactive display device, characterized in that: include: Transmission interface, processing chip, display module, communication network module, signal processing module, including: The transmission interface is connected to the processing chip and is used to transmit the screen projection signal from the external device to the processing chip when the external device is connected to the transmission interface via a data line; The processing chip is connected to the display module and is used to transmit the media stream data carried in the screen projection signal to the display module, so as to display the video data in the media stream data through the display module; The communication network module is connected to the processing chip and is used to transmit network signals to the processing chip so that the interactive display device can be connected to the network; The signal processing module is connected to the communication network module and the transmission interface respectively, and is used to receive the network signal from the communication network module, and transmit the shared network signal obtained by processing the network signal to the external device via the transmission interface.

2. The interactive display device according to claim 1, characterized in that The interactive display device further includes a switch chip; The switch chip is connected to the communication network module and divides the network signal into two paths; The switch chip is further connected to the processing chip and the signal processing module, and is used to transmit one path of the network signal to the processing chip, and transmit another path of the network signal to the signal processing module.

3. The interactive display device according to claim 1, characterized in that The communication network module includes at least one of the following: A Wi-Fi module, configured to receive wireless network signals and transmit the wireless network signals to the processing chip via the hub module, so that the interactive display device is connected to the wireless network signals; The wired network card is used to receive a wired network signal and transmit the wired network signal to the switch chip. The switch chip transmits one wired network signal to the processing chip via the first signal conversion module, so that the interactive display device is connected to the wired network signal.

4. The interactive display device according to claim 3, characterized in that: The interactive display device further includes: The plug-and-play module is connected to the processing chip and the first signal conversion module respectively, and is used to send the wireless network signal converted by the first signal conversion module to the processing chip.

5. The interactive display device according to claim 2, characterized in that: The signal processing module includes: A second signal conversion module, connected to the switch chip, is used to perform signal conversion processing on the network signal to obtain a signal after the conversion format; The signal switching module is connected to the second signal conversion module and the transmission interface respectively, and is used to perform signal switching processing on the format-converted signal and transmit the obtained shared network signal to the transmission interface.

6. The interactive display device according to any one of claims 1 to 5, characterized in that: The interactive display device further includes: A decoding module, connected to the processing chip, for decoding the projection signal and converting the projection signal into an analog audio signal; an operational amplifier module, connected to the decoding module, configured to amplify the analog audio signal to obtain the media stream data; The speaker module is connected to the operational amplifier module and is used to output the audio data in the media stream data.

7. The interactive display device according to any one of claims 1 to 5, characterized in that: The processing chip is used to determine the video data and audio data in the media stream data; The interactive display device further includes: an image transmission interface, connected to the processing chip and the display module, for transmitting video data in the media stream data to the display module; A storage module is connected to the processing chip and is used to store the media stream data.

8. The interactive display device according to any one of claims 1 to 5, characterized in that: The transmission interface includes a Type-c interface, and the data line includes a Type-c data line; The Type-c interface is used to receive the screen projection signal transmitted by the external device via the Type-c data cable; The processing chip also includes: an HDMI interface, connected to the Type-c interface, for receiving the screen projection signal transmitted from the Type-c interface to the processing chip.

9. The interactive display device according to any one of claims 1 to 5, characterized in that: The interactive display device includes: A first mainboard is used to integrate a processing chip, an image transmission interface, a Type-C interface, an HDMI interface, a storage module, a hub module, and a signal switching module in the interactive display device; a second mainboard, connected to the first mainboard, for integrating the Wi-Fi module, the switch chip, the first signal conversion module and the second signal conversion module in the interactive display device; a third mainboard, connected to the first mainboard, for integrating a decoding module, an operational amplifier module, and a speaker module in the interactive display device; A power supply module is connected to the first mainboard, the second mainboard, and the third mainboard respectively, and is used to supply power to the first mainboard, the second mainboard, and the third mainboard.

10. An interactive display system, characterized in that: The device comprises: an external device, and the interactive display device according to any one of claims 1 to 9, wherein: The external device is used to transmit the screen projection signal to the interactive display device when connected to the transmission interface of the interactive display device; The interactive display device is used to display the video data in the media stream data carried in the projection signal; and after performing signal conversion processing and signal switching processing on the local network signal, the obtained shared network signal is transmitted to the external device via the transmission interface.

11. An interactive display method, characterized in that: Applied to the interactive display device according to any one of claims 1 to 9, the method comprises: When an external device is connected to the transmission interface of the interactive display device, receiving a screen projection signal from the external device; Displaying the video data in the media stream data carried in the projection signal; and After the local network signal is subjected to signal conversion processing and signal switching processing, the obtained shared network signal is transmitted to the external device via the transmission interface.

12. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the electronic device implements the method according to claim 11.

13. A computer program product, characterized in that The invention comprises a computer program which, when executed, causes the method according to claim 11 to be performed.

14. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the method according to claim 11 is implemented.

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