CN112995733A

CN112995733A - Display device, device discovery method and storage medium

Info

Publication number: CN112995733A
Application number: CN201911303601.9A
Authority: CN
Inventors: 修国涵; 吴汉勇; 王秉清
Original assignee: Hisense Visual Technology Co Ltd
Current assignee: Hisense Visual Technology Co Ltd
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2021-06-18
Anticipated expiration: 2039-12-17
Also published as: CN112995733B

Abstract

The embodiment of the application shows a display device, a device discovery method and a storage medium, and is particularly suitable for a social television. According to the technical scheme, the display device comprises a first controller and a second controller, the first controller is provided with a first internal communication network card, the second controller is provided with a second internal communication network card and an external communication network card, the second controller determines a forwarding rule according to the destination address type of a first UDP data packet or a second UDP data packet, and forwards the first UDP data packet or the second UDP data packet according to the forwarding rule, so that the external device can receive the first UDP data packet after the address is modified, and the first controller can also receive the second UDP data packet after the address is modified, and therefore the problem that the first controller and the external device cannot communicate is solved.

Description

Display device, device discovery method and storage medium

Technical Field

Embodiments of the present application relate to a display technology, and more particularly, to a display apparatus, an apparatus discovery method, and a storage medium.

Background

Currently, since a display device can provide a user with a play picture such as audio, video, picture, and the like, it is receiving a wide attention of the user. With the development of big data and artificial intelligence, the functional requirements of users on display devices are increasing day by day. For example, the user performs a video chat with a friend while the user wants to play the display screen; or when the user is in a game scene, chatting with game teammates in real time; or, the user learns the current screen content in the education application program and simultaneously performs remote audio-video interaction with parents/teachers in real time, so as to meet the requirement of chatting while watching.

Based on the above-mentioned "chat while watching" requirement of the user, a communication connection may be established between the display device and an external device, for example, a mobile communication terminal of the user, and a picture or sound such as a video chat on the mobile communication terminal may be played on the display device, so as to satisfy that the user can perform the video chat while watching the video.

The above-mentioned "chat while watching" requirement puts a higher requirement on the data processing capability of the display device, and in the process of practical application, a dual-system display device with higher data processing capability is being developed. The dual system includes a first controller (a chip) and a second controller (N chip), and the first controller and the second controller may perform internal communication through an Interface module, such as an HDMI (High Definition Multimedia Interface), a network port, and a USB (Universal Serial Bus). The method comprises the steps that currently applied audio and video data are output to a display screen and a loudspeaker through a first controller to display video images and audio sounds, the externally applied audio and video data sent by an external device are decoded through a second controller, the processed data are sent to the first controller, and the first controller processes the processed audio and video data to synchronously output the currently applied audio and video data and the externally applied audio and video data on the display device.

However, in the display device of the dual system, the first controller is not located in the local area network where the external device is located, so that data of the external device cannot be sent to the first controller, and data of the first controller cannot be sent to the external device, which may cause that the first controller cannot find the external device to establish a connection with the external device, and thus the "chat while watching" function cannot be implemented.

Disclosure of Invention

In view of the above technical problems, an object of the present application is to provide a display device, a device discovery method, and a storage medium.

A first aspect of embodiments of the present application shows a display device, including:

the first controller is provided with a first internal communication network card and is configured to send a first UDP data packet to a second controller through the first internal communication network card;

the second controller is provided with a second internal communication network card and is configured to receive a first UDP data packet from the first controller through the second internal communication network card, determine a forwarding rule according to a destination address type of the first UDP data packet, and send the first UDP data packet to an external device according to the forwarding rule.

A second aspect of embodiments of the present application shows a display device, including:

a first controller, wherein the first controller is provided with a first internal communication network card, and the first controller is configured to send the first UDP data packet to a second controller through the first internal communication network card;

the second controller is provided with an external communication network card and is configured to receive a second UDP data packet from an external device through the external communication network card, determine a forwarding rule according to a destination address type of the second UDP data packet, and send the second UDP data packet to the first controller according to the forwarding rule.

A third aspect of the embodiments of the present application shows a device discovery method, which is applied to a display device including a first controller and a second controller, and includes:

the first controller sends a first UDP data packet to the second controller through the first internal communication network card;

the second controller receives the first UDP data packet through a second internal communication network card;

detecting the destination address type of the first UDP data packet;

determining a forwarding rule according to the destination address type of the first UDP data packet;

and sending the first UDP data packet to external equipment according to the forwarding rule.

A fourth aspect of the present embodiment shows a device discovery method, which is applied to a display device including a first controller and a second controller, and includes:

the second controller receives a second UDP data packet from the external equipment through the external communication network card;

detecting the destination address type of the second UDP data packet;

determining a forwarding rule according to the destination address type of the second UDP data packet;

and sending the second UDP data packet to the first controller according to the forwarding rule.

A fifth aspect of embodiments of the present application illustrates a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed, implements the device discovery method according to the third aspect or the fourth aspect.

As can be seen from the foregoing technical solutions, embodiments of the present application show a display device, a device discovery method, and a storage medium, where when a second controller receives a first UDP packet sent by a first controller, an address in the first UDP packet is changed, so that the first UDP packet is forwarded to an external device; and when the second controller receives a second UDP data packet sent by the external device, changing the address in the second UDP data packet, thereby forwarding the second UDP data packet to the first controller. Therefore, according to the application, the second controller is respectively connected with the external device and the first controller, the external device can receive the first UDP data packet after the address is modified by modifying the addresses of the first UDP data packet and the second UDP data packet, and the first controller can also receive the second UDP data packet after the address is modified, so that the problem that the first controller and the external device cannot communicate is solved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic diagram illustrating an operation scenario between a display device and a control apparatus according to an embodiment;

fig. 2 is a block diagram exemplarily showing a hardware configuration of the control apparatus 100 according to the embodiment;

fig. 3 is a block diagram exemplarily showing a hardware configuration of the display device 200 according to the embodiment;

a block diagram of the hardware architecture of the display device 200 according to fig. 3 is exemplarily shown in fig. 4;

fig. 5 is a diagram exemplarily showing a functional configuration of the display device 200 according to the embodiment;

fig. 6a schematically shows a software configuration in the display device 200 according to an embodiment;

fig. 6b schematically shows a configuration of an application in the display device 200 according to an embodiment;

fig. 7 schematically illustrates a user interface in the display device 200 according to an embodiment;

FIG. 8 is a block diagram illustrating a display device in accordance with a preferred embodiment;

FIG. 9 is a flow diagram illustrating a method for device discovery in accordance with a preferred embodiment;

fig. 10 is a flow chart illustrating another method of device discovery in accordance with a preferred embodiment.

Detailed Description

To make the objects, technical solutions and advantages of the exemplary embodiments of the present application clearer, the technical solutions in the exemplary embodiments of the present application will be clearly and completely described below with reference to the drawings in the exemplary embodiments of the present application, and it is obvious that the described exemplary embodiments are only a part of the embodiments of the present application, but not all the embodiments.

For the convenience of users, various external device interfaces are usually provided on the display device to facilitate connection of different peripheral devices or cables to implement corresponding functions. When a high-definition camera is connected to an interface of the display device, if a hardware system of the display device does not have a hardware interface of a high-pixel camera receiving the source code, data received by the camera cannot be displayed on a display screen of the display device.

Furthermore, due to the hardware structure, the hardware system of the conventional display device only supports one path of hard decoding resources, and usually only supports video decoding with a resolution of 4K at most, so when a user wants to perform video chat while watching a network television, the user needs to use the hard decoding resources (usually GPU in the hardware system) to decode the network video without reducing the definition of the network video screen, and in this case, the user can only process the video chat screen by using a general-purpose processor (e.g. CPU) in the hardware system to perform soft decoding on the video.

The soft decoding is adopted to process the video chat picture, so that the data processing burden of a CPU (central processing unit) can be greatly increased, and when the data processing burden of the CPU is too heavy, the problem of picture blocking or unsmooth flow can occur. Further, due to the data processing capability of the CPU, when the CPU performs soft decoding on the video chat screen, multi-channel video calls cannot be generally implemented, and when a user wants to perform video chat with multiple other users in the same chat scene, access is blocked.

In view of the above aspects, to overcome the above drawbacks, the present application discloses a dual hardware system architecture to implement multiple channels of video chat data (at least one channel of local video).

The concept to which the present application relates will be first explained below with reference to the drawings. It should be noted that the following descriptions of the concepts are only for the purpose of facilitating understanding of the contents of the present application, and do not represent limitations on the scope of the present application.

The term "module," as used in various embodiments of the present application, may refer to any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic, or combination of hardware and/or software code that is capable of performing the functionality associated with that element.

The term "remote control" as used in the embodiments of the present application refers to a component of an electronic device (such as the display device disclosed in the present application) that is capable of wirelessly controlling the electronic device, typically over a short distance. The component may typically be connected to the electronic device using infrared and/or Radio Frequency (RF) signals and/or bluetooth, and may also include functional modules such as WiFi, wireless USB, bluetooth, motion sensors, etc. For example: the hand-held touch remote controller replaces most of the physical built-in hard keys in the common remote control device with the user interface in the touch screen.

The term "gesture" as used in the embodiments of the present application refers to a user behavior used to express an intended idea, action, purpose, or result through a change in hand shape or an action such as hand movement.

The term "hardware system" used in the embodiments of the present application may refer to a physical component having computing, controlling, storing, inputting and outputting functions, which is formed by a mechanical, optical, electrical and magnetic device such as an Integrated Circuit (IC), a Printed Circuit Board (PCB) and the like. In various embodiments of the present application, a hardware system may also be referred to as a motherboard (or chip).

Fig. 1 is a schematic diagram illustrating an operation scenario between a display device and a control apparatus according to an embodiment. As shown in fig. 1, a user may operate the display apparatus 200 through the control device 100.

The control device 100 may be a remote controller 100A, which can communicate with the display device 200 through an infrared protocol communication, a bluetooth protocol communication, a ZigBee (ZigBee) protocol communication, or other short-range communication, and is used to control the display device 200 in a wireless or other wired manner. The user may input a user instruction through a key on a remote controller, voice input, control panel input, etc., to control the display apparatus 200. Such as: the user can input a corresponding control command through a volume up/down key, a channel control key, up/down/left/right moving keys, a voice input key, a menu key, a power on/off key, etc. on the remote controller, to implement the function of controlling the display device 200.

The control apparatus 100 may also be a smart device, such as a mobile terminal 100B, a tablet computer, a notebook computer, etc., which may communicate with the display device 200 through a Local Area Network (LAN), a Wide Area Network (WAN), a Wireless Local Area Network (WLAN), or other networks, and implement control of the display device 200 through an application program corresponding to the display device 200.

For example, the mobile terminal 100B and the display device 200 may each have a software application installed thereon, so that connection communication between the two can be realized through a network communication protocol, and the purpose of one-to-one control operation and data communication can be further realized. Such as: a control instruction protocol can be established between the mobile terminal 100B and the display device 200, a remote control keyboard is synchronized to the mobile terminal 100B, and the function of controlling the display device 200 is realized by controlling a user interface on the mobile terminal 100B; the audio and video content displayed on the mobile terminal 100B may also be transmitted to the display device 200, so as to implement a synchronous display function.

As shown in fig. 1, the display apparatus 200 may also perform data communication with the server 300 through various communication means. In various embodiments of the present application, the display device 200 may be allowed to be communicatively coupled to the server 300 via a local area network, a wireless local area network, or other network. The server 300 may provide various contents and interactions to the display apparatus 200.

Illustratively, the display device 200 receives software Program updates, or accesses a remotely stored digital media library by sending and receiving information, and Electronic Program Guide (EPG) interactions. The servers 300 may be a group or groups, and may be one or more types of servers. Other web service contents such as a video on demand and an advertisement service are provided through the server 300.

The display device 200 may be, for example, a liquid crystal display, an oled (organic Light Emitting diode) display, or a projection display device; on the other hand, the display device can be a display system consisting of an intelligent television or a display and a set-top box. The specific display device type, size, resolution, etc. are not limiting, and those skilled in the art will appreciate that the display device 200 may be modified in performance and configuration as desired.

The display apparatus 200 may additionally provide an intelligent network tv function that provides a computer support function in addition to the broadcast receiving tv function. Examples include a web tv, a smart tv, an Internet Protocol Tv (IPTV), and the like. In some embodiments, the display device may not have a broadcast receiving television function.

As shown in fig. 1, the display device may be connected or provided with a camera, and is configured to present a picture taken by the camera on a display interface of the display device or other display devices, so as to implement interactive chat between users. Specifically, the picture shot by the camera can be displayed on the display device in a full screen mode, a half screen mode or any optional area.

As an optional connection mode, the camera is connected with the display rear shell through the connecting plate, is fixedly installed in the middle of the upper side of the display rear shell, and can be fixedly installed at any position of the display rear shell as an installable mode, so that an image acquisition area is ensured not to be shielded by the rear shell, for example, the display orientation of the image acquisition area is the same as that of the display equipment.

As another alternative connection mode, the camera is connected to the display rear shell through a connection board or other conceivable connector, the camera is capable of lifting, the connector is provided with a lifting motor, when a user wants to use the camera or an application program wants to use the camera, the camera is lifted out of the display, and when the camera is not needed, the camera can be embedded in the rear shell to protect the camera from being damaged.

As an embodiment, the camera adopted in the present application may have 1600 ten thousand pixels, so as to achieve the purpose of ultra high definition display. In actual use, cameras higher or lower than 1600 ten thousand pixels may also be used.

After the camera is installed on the display device, the contents displayed by different application scenes of the display device can be fused in various different modes, so that the function which cannot be realized by the traditional display device is achieved.

Illustratively, a user may conduct a video chat with at least one other user while watching a video program. The presentation of the video program may be as a background frame over which a window for video chat is displayed. The function is called 'chat while watching'.

Optionally, in a scene of "chat while watching", at least one video chat is performed across terminals while watching a live video or a network video.

In another example, a user can conduct a video chat with at least one other user while entering the educational application for learning. For example, a student may interact remotely with a teacher while learning content in an educational application. Vividly, this function can be called "chatting while learning".

In another example, a user conducts a video chat with a player entering a card game while playing the game. For example, a player may enable remote interaction with other players when entering a gaming application to participate in a game. Figuratively, this function may be referred to as "watch while playing".

Optionally, the game scene is fused with the video picture, the portrait in the video picture is scratched and displayed in the game picture, and the user experience is improved.

Optionally, in the motion sensing game (such as ball hitting, boxing, running and dancing), the human posture and motion, limb detection and tracking and human skeleton key point data detection are obtained through the camera, and then the human posture and motion, the limb detection and tracking and the human skeleton key point data detection are fused with the animation in the game, so that the game of scenes such as sports and dancing is realized.

In another example, a user may interact with at least one other user in a karaoke application in video and voice. Vividly, this function can be called "sing while watching". Optionally, when at least one user enters the application in a chat scenario, multiple users can jointly complete recording of a song.

In another example, a user may turn on a camera locally to take pictures and videos, figurative, which may be referred to as "looking into the mirror".

In other examples, more or less functionality may be added. The function of the display device is not particularly limited in the present application.

Fig. 2 is a block diagram schematically showing the configuration of the control apparatus 100 according to the exemplary embodiment. As shown in fig. 2, the control device 100 includes a controller 110, a communicator 130, a user input/output interface 140, a memory 190, and a power supply 180.

The control apparatus 100 is configured to control the display device 200, and to receive an input operation instruction from a user, and to convert the operation instruction into an instruction recognizable and responsive by the display device 200, and to mediate interaction between the user and the display device 200. Such as: the user operates the channel up/down key on the control device 100, and the display device 200 responds to the channel up/down operation.

In some embodiments, the control device 100 may be a smart device. Such as: the control apparatus 100 may install various applications that control the display device 200 according to user demands.

In some embodiments, as shown in fig. 1, the mobile terminal 100B or other intelligent electronic device may function similar to the control apparatus 100 after installing an application for manipulating the display device 200. Such as: the user may implement the functions of controlling the physical keys of the apparatus 100 by installing applications, various function keys or virtual buttons of a graphical user interface available on the mobile terminal 100B or other intelligent electronic devices.

The controller 110 includes a processor 112, a RAM113 and a ROM114, a communication interface, and a communication bus. The controller 110 is used to control the operation of the control device 100, as well as the internal components for communication and coordination and external and internal data processing functions.

The communicator 130 enables communication of control signals and data signals with the display apparatus 200 under the control of the controller 110. Such as: the received user input signal is transmitted to the display apparatus 200. The communicator 130 may include at least one of a WIFI module 131, a bluetooth module 132, an NFC module 133, and the like.

A user input/output interface 140, wherein the input interface includes at least one of a microphone 141, a touch pad 142, a sensor 143, a key 144, and the like. Such as: the user can realize a user instruction input function through actions such as voice, touch, gesture, pressing, and the like, and the input interface converts the received analog signal into a digital signal and converts the digital signal into a corresponding instruction signal, and sends the instruction signal to the display device 200.

The output interface includes an interface that transmits the received user instruction to the display apparatus 200. In some embodiments, it may be an infrared interface or a radio frequency interface. Such as: when the infrared signal interface is used, the user input instruction needs to be converted into an infrared control signal according to an infrared control protocol, and the infrared control signal is sent to the display device 200 through the infrared sending module. The following steps are repeated: when the rf signal interface is used, a user input command needs to be converted into a digital signal, and then the digital signal is modulated according to the rf control signal modulation protocol and then transmitted to the display device 200 through the rf transmitting terminal.

In some embodiments, the control device 100 includes at least one of a communicator 130 and an output interface. The communicator 130 is configured in the control device 100, such as: the modules of WIFI, bluetooth, NFC, etc. may send the user input command to the display device 200 through the WIFI protocol, or the bluetooth protocol, or the NFC protocol code.

And a memory 190 for storing various operation programs, data and applications for driving and controlling the control apparatus 100 under the control of the controller 110. The memory 190 may store various control signal commands input by a user.

And a power supply 180 for providing operational power support to the components of the control device 100 under the control of the controller 110. A battery and associated control circuitry.

A hardware configuration block diagram of a hardware system in the display apparatus 200 according to an exemplary embodiment is exemplarily shown in fig. 3.

When a dual hardware system architecture is adopted, the mechanism relationship of the hardware system can be shown in fig. 3. For convenience of description, one hardware system in the dual hardware system architecture will be referred to as a first hardware system or a system, a-chip, and the other hardware system will be referred to as a second hardware system or N-system, N-chip. The chip A comprises a controller of the chip A and various interfaces, and the chip N comprises a controller of the chip N and various interfaces. The chip a and the chip N may each have a relatively independent operating system, and the operating system of the chip a and the operating system of the chip N may communicate with each other through a communication protocol, which is as follows: the frame layer of the operating system of the a-chip and the frame layer of the operating system of the N-chip can communicate to transmit commands and data, so that two independent subsystems, which are associated with each other, exist in the display device 200.

As shown in fig. 3, the a chip and the N chip may be connected, communicated and powered through a plurality of different types of interfaces. The interface type of the interface between the a chip and the N chip may include a General-purpose input/output (GPIO) interface, a USB interface, an HDMI interface, a UART interface, and the like. One or more of these interfaces may be used for communication or power transfer between the a-chip and the N-chip. For example, as shown in fig. 3, in the dual hardware system architecture, the N chip may be powered by an external power source (power), and the a chip may not be powered by the external power source but by the N chip.

In addition to the interface for connecting with the N chip, the a chip may further include an interface for connecting other devices or components, such as an MIPI interface for connecting a Camera (Camera) shown in fig. 3, a bluetooth interface, and the like.

Similarly, in addition to the interface for connecting with the N chip, the N chip may further include an VBY interface for connecting with a display screen tcon (timer Control register), and an i2S interface for connecting with a power Amplifier (AMP) and a Speaker (Speaker); and an IR/Key interface, a USB interface, a Wifi interface, a bluetooth interface, an HDMI interface, a Tuner interface, and the like.

The dual hardware system architecture of the present application is further described below with reference to fig. 4. It should be noted that fig. 4 is only an exemplary illustration of the dual hardware system architecture of the present application, and does not represent a limitation of the present application. In actual practice, both hardware systems may contain more or less hardware or interfaces as desired.

A block diagram of the hardware architecture of the display device 200 according to fig. 3 is exemplarily shown in fig. 4. As shown in fig. 4, the hardware system of the display device 200 may include an a chip and an N chip, and a module connected to the a chip or the N chip through various interfaces.

The N-chip may include a tuner demodulator 220, a communicator 230, an external device interface 250, a processor 210, a memory 290, a chat input interface, a video processor 260-1, a display 280, an audio output interface 270, and a power supply. The N-chip may also include more or fewer modules in other embodiments.

The tuning demodulator 220 is configured to perform modulation and demodulation processing such as amplification, mixing, resonance and the like on a broadcast television signal received in a wired or wireless manner, so as to demodulate an audio/video signal carried in a frequency of a television channel selected by a user and additional information (e.g., an EPG data signal) from a plurality of wireless or wired broadcast television signals. Depending on the broadcast system of the television signal, the signal path of the tuner 220 may be various, such as: terrestrial broadcasting, cable broadcasting, satellite broadcasting, internet broadcasting, or the like; according to different modulation types, the adjustment mode of the signal can be a digital modulation mode or an analog modulation mode; and depending on the type of television signal being received, tuner demodulator 220 may demodulate analog and/or digital signals.

The tuner demodulator 220 is also operative to respond to the user-selected television channel frequency and the television signals carried thereby, in accordance with the user selection and as controlled by the processor 210.

In other exemplary embodiments, the tuner/demodulator 220 may be in an external device, such as an external set-top box. In this way, the set-top box outputs television audio/video signals after modulation and demodulation, and the television audio/video signals are input into the display device 200 through the external device interface 250.

The communicator 230 is a component for communicating with an external device or an external server according to various communication protocol types. For example: the communicator 230 may include a WIFI module 231, a bluetooth communication protocol module 232, a wired ethernet communication protocol module 233, and other network communication protocol modules such as an infrared communication protocol module or a near field communication protocol module.

The display apparatus 200 may establish a connection of a control signal and a data signal with an external control apparatus or a content providing apparatus through the communicator 230. For example, the communicator may receive a control signal of the remote controller 100 according to the control of the controller.

The external device interface 250 is a component for providing data transmission between the N-chip processor 210 and the a-chip and other external devices. The external device interface may be connected with an external apparatus such as a set-top box, a game device, a notebook computer, etc. in a wired/wireless manner, and may receive data such as a video signal (e.g., moving image), an audio signal (e.g., music), additional information (e.g., EPG), etc. of the external apparatus.

The external device interface 250 may include: a High Definition Multimedia Interface (HDMI) terminal is also referred to as HDMI251, a Composite Video Blanking Sync (CVBS) terminal is also referred to as AV252, an analog or digital component terminal is also referred to as component 253, a Universal Serial Bus (USB) terminal 254, a Red Green Blue (RGB) terminal (not shown in the figure), and the like. The number and type of external device interfaces are not limited by this application.

The processor 210 controls the operation of the display device 200 and responds to user operations by running various software control programs (e.g., an operating system and/or various application programs) stored on the memory 290.

As shown in FIG. 4, the processor 210 includes a read only memory RAM213, a random access memory ROM214, a graphics processor 216, a communication interface 218, and a communication bus. The RAM213 and the ROM214 are connected to a graphics processor 216 and a communication interface 218 via a bus.

Processor 210 for executing operating system and application program instructions stored in memory 290. And executing various application programs, data and contents according to various interactive instructions received from the outside so as to finally display and play various audio and video contents.

A ROM213 for storing instructions for various system boots. For example, when the power-on signal is received, the display device 200 starts to power up, and the processor 210 executes the system boot instruction in the ROM, and copies the operating system stored in the memory 290 to the RAM214 to start running the boot operating system. After the start of the operating system is completed, the processor 210 copies the various applications in the memory 290 to the RAM214, and then starts running and starting the various applications.

A graphics processor 216 for generating various graphics objects, such as: icons, operation menus, user input instruction display graphics, and the like. The display device comprises an arithmetic unit which carries out operation by receiving various interactive instructions input by a user and displays various objects according to display attributes. And a renderer for generating various objects based on the operator and displaying the rendered result on the display 280.

In some example embodiments, the processor 210 may include a plurality of processors. The plurality of processors may include a main processor and a plurality of or a sub-processor. A main processor for performing some operations of the display apparatus 200 in a pre-power-up mode and/or operations of displaying a screen in a normal mode. A plurality of or one sub-processor for performing an operation in a standby mode or the like.

The communication interfaces may include a first interface 218-1 through an nth interface 218-n. These interfaces may be network interfaces that are connected to external devices via a network.

The processor 210 may control the overall operation of the display device 200. For example: in response to receiving a user command to select a UI object to be displayed on the display 280, the processor 210 may perform an operation related to the object selected by the user command.

Wherein the object may be any one of selectable objects, such as a hyperlink or an icon. Operations related to the selected object, such as: displaying an operation connected to a hyperlink page, document, image, or the like, or performing an operation of a program corresponding to an icon. The user command for selecting the UI object may be a command input through various input means (e.g., a mouse, a keyboard, a touch pad, etc.) connected to the display apparatus 200 or a voice command corresponding to a voice spoken by the user.

The memory 290 includes a memory for storing various software modules for driving and controlling the display apparatus 200. Such as: various software modules stored in memory 290, including: the system comprises a basic module, a detection module, a communication module, a display control module, a browser module, various service modules and the like.

The basic module is a bottom layer software module for signal communication between hardware in the display device 200 and sending processing and control signals to an upper layer module. The detection module is a management module used for collecting various information from various sensors or chat input interfaces, and performing digital-to-analog conversion and analysis management.

For example: the voice recognition module comprises a voice analysis module and a voice instruction database module. The display control module is a module for controlling the display 280 to display image content, and may be used to play information such as multimedia image content and UI interface. The communication module is used for carrying out control and data communication with external equipment. And the browser module is used for executing data communication between the browsing servers. The service module is a module for providing various services and various application programs.

Meanwhile, the memory 290 is also used to store visual effect maps and the like for receiving external data and user data, images of respective items in various user interfaces, and a focus object.

A chat input interface for transmitting an input signal of the user to the processor 210 or transmitting a signal output from the controller to the user. For example, the control device (e.g., a mobile terminal or a remote controller) may send an input signal, such as a power switch signal, a channel selection signal, a volume adjustment signal, etc., input by a user to the chat input interface, and then the input signal is transferred to the controller through the chat input interface; alternatively, the control device may receive an output signal such as audio, video or data output from the chat input interface via the controller, and display the received output signal or output the received output signal in audio or vibration form.

In some embodiments, the user may enter user commands on a Graphical User Interface (GUI) displayed on the display 280, and the chat input interface receives the user input commands through the Graphical User Interface (GUI). Alternatively, the user may input the user command by inputting a specific sound or gesture, and the chat input interface receives the user input command by recognizing the sound or gesture through the sensor.

The video processor 260-1 is configured to receive a video signal, and perform video data processing such as decompression, decoding, scaling, noise reduction, frame rate conversion, resolution conversion, and image synthesis according to a standard codec protocol of the input signal, so as to obtain a video signal that is directly displayed or played on the display 280.

Illustratively, the video processor 260-1 includes a demultiplexing module, a video decoding module, an image synthesizing module, a frame rate conversion module, a display formatting module, and the like.

The demultiplexing module is used for demultiplexing the input audio and video data stream, and if the input MPEG-2 is input, the demultiplexing module demultiplexes the input audio and video data stream into a video signal and an audio signal.

And the video decoding module is used for processing the video signal after demultiplexing, including decoding, scaling and the like.

And the image synthesis module, such as an image synthesizer, is used for performing superposition mixing processing on the GUI signal input by the user or generated by the user and the video picture after the zooming processing by the graphics generator so as to generate an image signal for display.

The frame rate conversion module is configured to convert a frame rate of an input video, such as a 24Hz, 25Hz, 30Hz, or 60Hz video, into a 60Hz, 120Hz, or 240Hz frame rate, where the input frame rate may be related to a source video stream, and the output frame rate may be related to an update rate of a display. The input is realized in a common format by using a frame insertion mode.

And a display formatting module for converting the signal output by the frame rate conversion module into a signal conforming to a display format of a display, such as converting the format of the signal output by the frame rate conversion module to output an RGB data signal.

And a display 280 for receiving the image signal input from the video processor 260-1 and displaying the video content and image and the menu manipulation interface. The display 280 includes a display component for presenting a picture and a driving component for driving the display of an image. The video content may be displayed from the video in the broadcast signal received by the tuner/demodulator 220, or from the video content input from the communicator or the external device interface. The display 280 simultaneously displays a user manipulation interface UI generated in the display apparatus 200 and used to control the display apparatus 200.

And, a driving component for driving the display according to the type of the display 280. Alternatively, in case the display 280 is a projection display, it may also comprise a projection device and a projection screen.

Resulting in an audio signal that can be played in the speaker 272.

The audio output interface 270, for outputting audio output under the control of the processor 210, may include a speaker 272, or an external sound output terminal 274 to output to a generating device of an external device, such as: external sound terminal or earphone output terminal.

In other exemplary embodiments, video processor 260-1 may comprise one or more chip components.

And, in other exemplary embodiments, video processor 260-1, may be a separate chip or may be integrated with processor 210 in one or more chips.

And a power supply for supplying power supply support to the display device 200 from the power input from the external power source under the control of the processor 210. The power supply may include a built-in power supply circuit installed inside the display apparatus 200, or may be a power supply installed outside the display apparatus 200, such as a power supply interface for providing an external power supply in the display apparatus 200.

Similar to the N-chip, as shown in fig. 4, the a-chip may include a processor 310, a communicator 330, a detector 340, and a memory 390. In some embodiments, a chat input interface, a video processor, an audio processor, a display, an audio output interface may also be included. In some embodiments, there may also be a power supply that independently powers the A-chip.

The communicator 330 is a component for communicating with an external device or an external server according to various communication protocol types. For example: the communicator 330 may include a WIFI module 331, a bluetooth communication protocol module 332, a wired ethernet communication protocol module 333, and other network communication protocol modules such as an infrared communication protocol module or a near field communication protocol module.

The communicator 330 of the a-chip and the communicator 230 of the N-chip also interact with each other. For example, the WiFi module 231 within the N-chip hardware system is used to connect to an external network, generate network communication with an external server, and the like. The WiFi module 331 in the a-chip hardware system is used to connect to the N-chip WiFi module 231 without making a direct connection with an external network or the like, and the a-chip is connected to an external network through the N-chip. Therefore, for the user, a display device as in the above embodiment displays a WiFi account to the outside.

The detector 340 is a component of the display device a chip for collecting signals of an external environment or interacting with the outside. The detector 340 may include a light receiver 342, a sensor for collecting the intensity of ambient light, which may be used to adapt to display parameter changes, etc.; the system may further include an image collector 341, such as a camera, a video camera, etc., which may be configured to collect external environment scenes, collect attributes of the user or interact gestures with the user, adaptively change display parameters, and identify user gestures, so as to implement a function of interaction with the user.

An external device interface 350, which provides a component for data transmission between the processor 310 and the N-chip or other external devices. The external device interface may be connected with an external apparatus such as a set-top box, a game device, a notebook computer, etc. in a wired/wireless manner.

A video processor 360-1 for processing the associated video signal.

An audio processor 360-2 for processing the associated audio signal

The processor 310 controls the operation of the display device 200 and responds to the user's operations by running various software control programs stored on the memory 390 (e.g., using installed third party applications, etc.), and interacting with the N-chip.

As shown in FIG. 4, processor 310 includes read only memory ROM313, random access memory RAM314, graphics processor 316, processor 310, communication interface 318, and a communication bus. The ROM313 and the RAM314, the graphic processor 316, the processor 310, and the communication interface 318 are connected via a bus.

And a processor 310 for executing the operating system and application program instructions stored in the memory 390, communicating with the N-chip, transmitting and interacting signals, data, instructions, etc., and executing various application programs, data and contents according to various interaction instructions received from the outside, so as to finally display and play various audio and video contents.

A ROM313 for storing instructions for various system boots. The processor 310 executes system boot instructions in ROM and copies the operating system stored in memory 390 to RAM314 to begin running the boot operating system. After the booting of the operating system is completed, the processor 310 copies the various applications in the memory 390 to the RAM314, and then starts to run and boot the various applications.

The communication interface 318 is plural. These interfaces may be network interfaces connected to external devices via a network, or may be network interfaces connected to the N-chip via a network.

And an audio processor 360-2, configured to receive the audio signal, decompress and decode the audio signal according to a standard encoding and decoding protocol of the input signal, and perform audio data processing such as noise reduction, digital-to-analog conversion, and amplification processing.

The processor 310 may control the overall operation of the display device 200. For example: in response to receiving a user command to select a UI object to be displayed on the display 280, the processor 210 may perform an operation related to the object selected by the user command.

A graphics processor 316 for generating various graphics objects, such as: icons, operation menus, user input instruction display graphics, and the like. The display device comprises an arithmetic unit which carries out operation by receiving various interactive instructions input by a user and displays various objects according to display attributes. And a renderer for generating various objects based on the operator and displaying the rendered result on the display 280.

Both the A-chip graphics processor 316 and the N-chip graphics processor 216 are capable of generating various graphics objects. In distinction, if application 1 is installed on the a-chip and application 2 is installed on the N-chip, the a-chip graphics processor 316 generates a graphics object when a user performs a command input by the user in application 1 at the interface of application 1. When a user makes a command input by the user in the interface of the application 2 and within the application 2, a graphic object is generated by the graphic processor 216 of the N chip.

Fig. 5 is a diagram schematically illustrating a functional configuration of a display device according to an exemplary embodiment.

As shown in fig. 5, the memory 390 of the a-chip and the memory 290 of the N-chip are used to store an operating system, an application program, contents, user data, and the like, respectively, and perform system operations for driving the display device 200 and various operations in response to a user under the control of the processor 310 of the a-chip and the processor 210 of the N-chip. The A-chip memory 390 and the N-chip memory 290 may include volatile and/or non-volatile memory.

The memory 290 is specifically configured to store an operating program for driving the processor 210 in the display device 200, and to store various applications built in the display device 200, various applications downloaded by a user from an external device, various graphical user interfaces related to the applications, various objects related to the graphical user interfaces, user data information, and internal data of various supported applications. The memory 290 is used to store system software such as an Operating System (OS) kernel, middleware, and applications, and to store input video data and audio data, and other user data.

The memory 290 is specifically used for storing drivers and related data such as the video processor 260-1, the display 280, the communicator 230, the tuner demodulator 220, the input/output interface, etc.

In some embodiments, memory 290 may store software and/or programs, software programs for representing an Operating System (OS) including, for example: a kernel, middleware, an Application Programming Interface (API), and/or an application program. For example, the kernel may control or manage system resources, or functions implemented by other programs (e.g., the middleware, APIs, or applications), and the kernel may provide interfaces to allow the middleware and APIs, or applications, to access the controller to implement controlling or managing system resources.

The memory 290, for example, includes a broadcast receiving module 2901, a channel control module 2902, a volume control module 2903, an image control module 2904, a display control module 2905, a first audio control module 2906, an external instruction recognition module 2907, a communication control module 2908, a light receiving module 2909, a power control module 2910, an operating system 2911, and other applications 2912, a browser module, and the like. Processor 210 performs functions such as: the system comprises a broadcast television signal receiving and demodulating function, a television channel selection control function, a volume selection control function, an image control function, a display control function, an audio control function, an external instruction identification function, a communication control function, an optical signal receiving function, an electric power control function, a software control platform supporting various functions, a browser function and other various functions.

The memory 390 includes a memory storing various software modules for driving and controlling the display apparatus 200. Such as: various software modules stored in memory 390, including: the system comprises a basic module, a detection module, a communication module, a display control module, a browser module, various service modules and the like. Since the functions of the memory 390 and the memory 290 are similar, reference may be made to the memory 290 for relevant points, and thus, detailed description thereof is omitted here.

Illustratively, the memory 390 includes an image control module 3904, a second audio control module 3906, an external instruction recognition module 3907, a communication control module 3908, a light receiving module 3909, an operating system 3911, and other application programs 3912, a browser module, and the like. Processor 210 performs functions such as: the system comprises an image control function, a display control function, an audio control function, an external instruction identification function, a communication control function, an optical signal receiving function, an electric power control function, a software control platform supporting various functions, a browser function and other various functions.

Differently, the external instruction recognition module 2907 of the N-chip and the external instruction recognition module 3907 of the a-chip can recognize different instructions.

Illustratively, since the image receiving device such as a camera is connected with the a-chip, the external instruction recognition module 3907 of the a-chip may include the pattern recognition module 2907-1, a pattern database is stored in the pattern recognition module 3907-1, and when the camera receives an external pattern instruction, the camera corresponds to the instruction in the pattern database to perform instruction control on the display device. Since the voice receiving device and the remote controller are connected to the N-chip, the external command recognition module 2907 of the N-chip may include a voice recognition module 2907-2, a voice database is stored in the voice recognition module 2907-2, and when the voice receiving device receives an external voice command or the like, the voice receiving device and the like perform a corresponding relationship with a command in the voice database to perform command control on the display device. Similarly, a control device 100 such as a remote controller is connected to the N-chip, and the key command recognition module 2907-3 performs command interaction with the control device 100.

A block diagram of a configuration of a software system in a display device 200 according to an exemplary embodiment is exemplarily shown in fig. 6 a.

For an N-chip, as shown in fig. 6a, the operating system 2911, which includes executing operating software for handling various basic system services and for performing hardware related tasks, serves as an intermediary between applications and hardware components for data processing.

In some embodiments, portions of the operating system kernel may contain a series of software to manage the display device hardware resources and provide services to other programs or software code.

In other embodiments, portions of the operating system kernel may include one or more device drivers, which may be a set of software code in the operating system that assists in operating or controlling the devices or hardware associated with the display device. The drivers may contain code that operates the video, audio, and/or other multimedia components. Examples include a display, a camera, Flash, WiFi, and audio drivers.

The accessibility module 2911-1 is configured to modify or access the application program to achieve accessibility and operability of the application program for displaying content.

A communication module 2911-2 for connection to other peripherals via associated communication interfaces and a communication network.

The user interface module 2911-3 is configured to provide an object for displaying a user interface, so that each application program can access the object, and user operability can be achieved.

Control applications 2911-4 for controlling process management, including runtime applications and the like.

The event transmission system 2914 may be implemented within the operating system 2911 or within the application 2912. In some embodiments, an aspect is implemented within the operating system 2911, while implemented in the application 2912, for listening for various user input events, and will implement one or more sets of predefined operations in response to various events referring to the recognition of various types of events or sub-events.

The event monitoring module 2914-1 is configured to monitor an event or a sub-event input by the chat input interface.

The event recognition module 2914-2 is configured to input definitions of various types of events into various chat input interfaces, recognize various events or sub-events, and transmit the events or sub-events to the processes for executing one or more corresponding sets of processes.

The event or sub-event refers to an input detected by one or more sensors in the display device 200 and an input of an external control device (e.g., the control apparatus 100). Such as: the method comprises the following steps of inputting various sub-events through voice, inputting a gesture sub-event through gesture recognition, inputting a remote control key command of a control device and the like. Illustratively, the one or more sub-events in the remote control include a variety of forms including, but not limited to, one or a combination of key presses up/down/left/right/, ok keys, key presses, and the like. And non-physical key operations such as move, hold, release, etc.

The interface layout management module 2913, directly or indirectly receiving the input events or sub-events from the event transmission system 2914, monitors the input events or sub-events, and updates the layout of the user interface, including but not limited to the position of each control or sub-control in the interface, and the size, position, and level of the container, which are related to the layout of the interface.

Since the functions of the operating system 3911 of the a chip are similar to those of the operating system 2911 of the N chip, reference may be made to the operating system 2911 for relevant points, and details are not repeated here.

As shown in fig. 6b, the application layer of the display device contains various applications that can be executed at the display device 200.

The N-chip application layer 2912 may include, but is not limited to, one or more applications such as: a video-on-demand application, an application center, a game application, and the like. The application layer 3912 of the a-chip may include, but is not limited to, one or more applications such as: live television applications, media center applications, and the like. It should be noted that what applications are respectively contained in the a chip and the N chip is determined according to an operating system and other designs, and the present invention does not need to make specific limitations and divisions on the applications contained in the a chip and the N chip.

The live television application program can provide live television through different signal sources. For example, a live television application may provide television signals using input from cable television, radio broadcasts, satellite services, or other types of live television services. And, the live television application may display video of the live television signal on the display device 200.

A video-on-demand application may provide video from different storage sources. Unlike live television applications, video on demand provides a video display from some storage source. For example, the video on demand may come from a server side of the cloud storage, from a local hard disk storage containing stored video programs.

The media center application program can provide various applications for playing multimedia contents. For example, a media center, which may be other than live television or video on demand, may provide services for a user to access various images or audio through a multimedia center application.

The application program center can provide and store various application programs. The application may be a game, an application, or some other application associated with a computer system or other device that may be run on a display device. The application center may obtain these applications from different sources, store them in local storage, and then be operable on the display device 200.

A schematic diagram of a user interface in a display device 200 according to an exemplary embodiment is illustrated in fig. 7. As shown in fig. 7, the user interface includes a plurality of view display areas, illustratively, a first view display area 201 and a play screen 202, wherein the play screen includes a layout of one or more different items. And a selector in the user interface indicating that the item is selected, the position of the selector being movable by user input to change the selection of a different item.

It should be noted that the multiple view display areas may present display screens of different hierarchies. For example, a first view display area may present video chat project content and a second view display area may present application layer project content (e.g., web page video, VOD presentations, application screens, etc.).

Optionally, the different view display areas are presented with different priorities, and the display priorities of the view display areas are different among the view display areas with different priorities. If the priority of the system layer is higher than that of the application layer, when the user uses the acquisition selector and picture switching in the application layer, the picture display of the view display area of the system layer is not blocked; and when the size and the position of the view display area of the application layer are changed according to the selection of the user, the size and the position of the view display area of the system layer are not influenced.

Based on the above-mentioned need of chatting while watching of the user, the data processing method and the data processing device can be connected with the external device through the chip A of the display device, process the data of the external device, and then send the processed data to the chip N, so that the chip N can simultaneously display the application interface of the chip N and the relevant interface of the external device. However, since the external device is located in an external lan outside the display device and the a chip is located in an internal lan inside the display device, that is, the external device and the a chip are located in two different network segments, data sent by the external device cannot reach the a chip, and data sent by the a chip cannot reach the external device, so that the external device and the a chip cannot establish connection and perform communication.

In view of the above technical problem, a first aspect of the present application shows a display device, and in particular, may refer to fig. 8, where the display device includes a first controller and a second controller.

Here, for convenience of description, the first controller in fig. 4 and 5 corresponds to the first controller in fig. 8, and the second controller in fig. 4 and 5 corresponds to the second controller in fig. 8. Which will not be indicated below.

The first controller includes a first internal communication network card 311. The first internal communication network card 311 is a network card configured in the first controller and capable of performing UDP (User Datagram Protocol) communication with the second controller.

The second controller includes a second internal communication network card 211, an external communication network card 217, and a control schedule 215. The second internal communication network card 211 is a network card configured by the control schedule 215 and capable of performing UDP communication with the first internal communication network card 311 in the first controller. The external communication network card 217 is a network card configured by the control schedule 215 and capable of performing UDP communication with an external device.

The control schedule 215 is a network relay service preset by the second controller, the service is started after the second controller is started, after the service is started, a network card is configured from any two network cards of the second controller to be in communication connection with the first internal communication network card 311 of the first controller, and the network card is called as a second internal communication network card 211; another network card is configured to communicatively couple to an external lan, referred to as external communications network card 217.

After the second internal communication network card 211 and the external communication network card 217 are configured by the control schedule 215, the second internal communication network card 211 and the external communication network card 217 are monitored respectively, so as to receive a first UDP packet from the first controller from the second internal communication network card 211 or receive a second UDP packet from an external device from the external communication network card 217.

The first UDP packet sent by the first controller has different characteristics in different communication phases between the application program of the first controller and the external device, for example, in a device discovery phase, the first controller does not know the IP address of the external device, and the destination address type of the first UDP packet may be broadcast or multicast, and in a data transmission phase after the device discovery is successful, the first controller knows the IP address of the external device, and the destination address type of the first UDP packet may be unicast, so the control schedule 215 needs to perform corresponding processing on the first UDP packet according to the forwarding rule so that the first controller can achieve the purpose of sending the first UDP packet.

The forwarding rule of the control schedule 215 for the first UDP packet is determined according to the destination address type of the first UDP packet. The destination address type, UDP type, includes broadcast, multicast and unicast. According to the type of the destination address of the first UDP packet being broadcast, that is, the destination address is 255.255.255.255, the forwarding rule is: and changing the source address in the first UDP data packet into the ip address of the external communication network card, and then forwarding the changed first UDP data packet to the external communication network card. According to the type of the destination address of the first UDP packet being multicast, that is, the destination address is · 255, where value of · ranges from 0 to 255, and the forwarding rule is: and changing the source address in the first UDP data packet into the ip address of the external communication network card, changing the destination address in the first UDP data packet into the broadcast address corresponding to the external communication network card, and then forwarding the changed first UDP data packet to the external communication network card. According to the fact that the destination address type of the first UDP data packet is unicast, the forwarding rule is as follows: and directly forwarding the first data packet to an external communication network card.

After the control schedule 215 forwards the first UDP packet to the external communication network card, the second internal communication network card 211 continues to be monitored, so as to process the next first UDP packet received by the second internal communication network card 211 in time.

And after the first UDP data packet is forwarded to the external communication network card, the external communication network card sends the first UDP data packet to a router of the external local area network. The router sends the first UDP data packet to all nodes of the external local area network according to the type of the destination address of the first UDP data packet as broadcast; the router sends the first UDP data packet to a node with the network address as the multicast address in an external local area network according to the multicast of the destination address type of the first UDP data packet; and the router sends the first UDP data packet to a node with the network address in the external local area network as the unicast destination address according to the fact that the destination address type of the first UDP data packet is unicast. When the destination address of the first UDP packet is broadcast or multicast including the IP address of the external device, or unicast with the IP address of the external device, the external device may be enabled to receive data from the first controller application.

The forwarding rule of the control schedule 215 for the second UDP packet is determined according to the destination address type of the second UDP packet. According to the type of the destination address of the second UDP packet being broadcast, that is, the destination address is 255.255.255.255, the forwarding rule is: and directly sending the second data packet to the second internal communication network card. According to the destination address type of the second UDP packet being multicast, that is, the destination address is · 255, where a value range of · is 0-255, and the forwarding rule is: and changing the destination address in the second UDP data packet into the broadcast address of the first internal communication network card, and then sending the changed second UDP data packet to the second internal communication network card. According to the fact that the destination address type of the second UDP data packet is unicast, the forwarding rule is as follows: and changing the target IP address in the second UDP data packet into the IP address of the first internal communication network card, changing the target mac address in the second UDP data packet into the mac address of the first internal communication network card, and then sending the changed second UDP data packet to the second internal communication network card.

After the control schedule 215 forwards the second UDP packet to the second internal communication network card, the external communication network card 217 continues to be monitored, so as to process the next second UDP packet received by the external communication network card 217 in time.

After the second UDP data packet is forwarded to the second internal communication network card, the second internal communication network card sends the second UDP data packet to the first internal communication network card of the first controller, and after the first controller receives the second UDP data packet through the first internal communication network card, the second controller forwards the second UDP data packet to the application program calling the port number according to the port number in the second UDP data packet, so that the application program in the first controller receives data from the external device.

To describe in detail the process of the first controller sending the first UDP packet to the external device in the first aspect, a second aspect of the present application illustrates a flowchart of a device discovery method, specifically, referring to fig. 9, the method is applied to a display device, where the display device includes a first controller and a second controller, and the method includes the following steps:

step S110: and sending the first UDP data packet to the second controller through the first internal communication network card.

When a certain application program of the first controller needs to communicate with the external device, the application program of the first controller generates a first UDP data packet with a destination address type of broadcast or multicast or unicast and containing a monitoring port number according to the communication requirement of the application program of the first controller, and sends the first UDP data packet to the second controller through the first internal communication network card.

Step S12O: and receiving the first UDP data packet through the second internal communication network card.

And after the configuration of the second internal communication network card is finished, the second internal communication network card can receive a first UDP (user Datagram protocol) data packet sent by the first internal communication network card.

Step S13O: the destination address type of the first UDP packet is detected.

And the control scheduling of the second controller monitors the second internal communication network card after the configuration of the second internal communication network card is completed, and when the second internal communication network card receives the first UDP data packet, the control scheduling immediately acquires the first UDP data packet and detects the destination address type of the first UDP data packet.

Step S140: and determining a forwarding rule according to the destination address type of the first UDP data packet.

The control schedule of the second controller is broadcast according to the destination address type of the first UDP data packet, that is, the destination address is 255.255.255.255, and the forwarding rule is: and changing the source address in the first UDP data packet into the ip address of the external communication network card, and then forwarding the changed first UDP data packet to the external communication network card. According to the type of the destination address of the first UDP packet being multicast, that is, the destination address is · 255, where value of · ranges from 0 to 255, and the forwarding rule is: and changing the source address in the first UDP data packet into the ip address of the external communication network card, changing the destination address in the first UDP data packet into the broadcast address corresponding to the external communication network card, and then forwarding the changed first UDP data packet to the external communication network card. According to the fact that the destination address type of the first UDP data packet is unicast, the forwarding rule is as follows: and directly forwarding the first data packet to an external communication network card.

Step S150: and transmitting the first UDP data packet to the external equipment according to the forwarding rule.

If the destination address type of the first UDP packet is broadcast, changing the source address in the first UDP packet to the ip address of the external communication network card according to the forwarding rule determined in step S140, and then forwarding the changed first UDP packet to the external communication network card; if the destination address type of the first UDP packet is multicast, changing the source address in the first UDP packet to an ip address of the external communication network card according to the forwarding rule determined in step S140, changing the destination address in the first UDP packet to a broadcast address corresponding to the external communication network card, and then forwarding the changed first UDP packet to the external communication network card; if the destination address type of the first UDP packet is unicast, directly forwarding the first packet to the external communication network card according to the forwarding rule determined in step S140.

To describe in detail the process of the first aspect, in which the external device sends the second UDP packet to the first controller, a third aspect of the present application illustrates a flowchart of a device discovery method, and in particular, refer to fig. 10, where the method is applied to a display device, where the display device includes the first controller and the second controller, and the method includes the following steps:

step S210: and receiving a second UDP data packet from the external equipment through the external communication network card.

After the control scheduling of the second controller is started, one network card is selected from the multiple network cards of the second controller to be configured as an external communication network card, and after the configuration of the external communication network card is completed, the external communication network card can receive a second UDP data packet sent by the external device.

The second UDP packet may be a response packet of the external device to the first UDP packet sent by the first controller, or may be a packet actively sent by the external device. For example, in a device discovery scenario, it may be that the first controller actively sends a first data packet, the external device responds to the first UDP data packet to generate a second UDP data packet, and the second UDP data packet is received by the first controller, so as to establish a connection between the first controller and the external device; it may also be that the external device actively sends a second UDP packet, the first controller generates a first UDP packet in response to the second UDP packet, and the first UDP packet is received by the external device, so as to establish a connection between the first controller and the external device.

Step S220: the destination address type of the second UDP packet is detected.

And the control scheduling of the second controller monitors the external communication network card after the configuration of the external communication network card is finished, and when the external communication network card receives a second UDP data packet, the control scheduling immediately acquires the second UDP data packet and detects the destination address type of the second UDP data packet.

Step S230: and determining a forwarding rule according to the destination address type of the second UDP data packet.

The control schedule of the second controller is broadcast according to the destination address type of the second UDP data packet, that is, the destination address is 255.255.255.255, and the forwarding rule is: and directly sending the second data packet to the second internal communication network card. According to the type of the destination address of the first UDP packet being multicast, that is, the destination address is · 255, where value of · ranges from 0 to 255, and the forwarding rule is: and changing the destination address in the second UDP data packet into the broadcast address of the first internal communication network card, and then sending the changed second UDP data packet to the second internal communication network card. According to the fact that the destination address type of the first UDP data packet is unicast, the forwarding rule is as follows: and changing the target IP address in the second UDP data packet into the IP address of the first internal communication network card, changing the target mac address in the second UDP data packet into the mac address of the first internal communication network card, and then sending the changed second UDP data packet to the second internal communication network card.

Step S240: and sending the second UDP data packet to the first controller according to the forwarding rule.

If the destination address type of the second UDP data packet is broadcast, directly sending the second data packet to the second internal communication network card according to the forwarding rule determined in step S230; if the destination address type of the second UDP packet is multicast, changing the destination address in the second UDP packet to the broadcast address of the first internal communication network card according to the forwarding rule determined in step S140, and then sending the changed second UDP packet to the second internal communication network card; if the destination address type of the second UDP packet is unicast, the destination IP address in the second UDP packet is changed to the IP address of the first internal communication network card according to the forwarding rule determined in step S140, the destination mac address in the second UDP packet is changed to the mac address of the first internal communication network card, and then the changed second UDP packet is sent to the second internal communication network card.

The transformation rules governing scheduling in the second and third aspects of the present application may be summarized in table 1 below:

TABLE 1

In a fourth aspect, the present application shows a computer-readable storage medium having stored thereon a computer program which, when executed, implements the device discovery method of the second or third aspect.

As can be seen from the foregoing embodiments, embodiments of the present application illustrate a display device, a device discovery method, and a storage medium, where when a second controller receives a first UDP packet sent by a first controller, an address in the first UDP packet is changed, so that the first UDP packet is forwarded to an external device; and when the second controller receives a second UDP data packet sent by the external device, changing the address in the second UDP data packet, thereby forwarding the second UDP data packet to the first controller. Therefore, according to the application, the second controller is respectively connected with the external device and the first controller, the external device can receive the first UDP data packet after the address is modified by modifying the addresses of the first UDP data packet and the second UDP data packet, and the first controller can also receive the second UDP data packet after the address is modified, so that the problem that the first controller and the external device cannot communicate is solved.

It should be understood that the terms "first," "second," "third," and the like in the description and in the claims of the present application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used are interchangeable under appropriate circumstances and can be implemented in sequences other than those illustrated or otherwise described herein with respect to the embodiments of the application, for example.

Furthermore, the terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a product or device that comprises a list of elements is not necessarily limited to those elements explicitly listed, but may include other elements not expressly listed or inherent to such product or device.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display device, comprising:

2. The display device according to claim 1, wherein the second controller is further provided with a control schedule, and the control schedule is configured to set one communication network card of the second controller as a second internal communication network card communicating with the first controller, and to listen to a first UDP packet received by the second internal communication network card.

3. The display device according to claim 1, wherein the second controller is further provided with a control schedule configured to determine, according to the destination address type of the first UDP packet being broadcast, a forwarding rule as: changing the source address in the first UDP data packet into the ip address of the external communication network card; determining a forwarding rule as follows according to the destination address type of the first UDP packet as multicast: changing a source address in the first UDP data packet into an ip address of the external communication network card, and changing a destination address in the first UDP data packet into a broadcast address corresponding to the external communication network card; according to the fact that the destination address type of the first UDP data packet is unicast, determining that a forwarding rule is as follows: and sending the first UDP data packet to the external communication network card.

4. The display device according to claim 1, wherein the second controller is further provided with a control schedule configured to check an IP checksum and a UDP checksum in the header of the first UDP packet.

5. A display device, comprising:

6. The display device according to claim 5, wherein the second controller is further provided with a control schedule, and the control schedule is configured to set one communication network card of the second controller as an external communication network card for communicating with an external device, and to listen to a second UDP packet received by the external communication network card.

7. The display device according to claim 5, wherein the second controller is further provided with a control schedule configured to determine the forwarding rule as follows according to the destination address type of the second UDP packet being unicast: changing the destination IP address in the second UDP data packet into the IP address of the first internal communication network card, and changing the destination mac address in the second UDP data packet into the mac address of the first internal communication network card; and determining a forwarding rule as follows according to the destination address type of the second UDP packet as multicast: changing the destination address in the second UDP data packet into the broadcast address of the first internal communication network card; and determining a forwarding rule as follows according to the destination address type of the second UDP data packet as broadcast: and sending the second UDP data packet to the second internal communication network card.

8. A device discovery method applied to a display device including a first controller and a second controller, the method comprising:

detecting the destination address type of the first UDP data packet;

9. A device discovery method applied to a display device including a first controller and a second controller, the method comprising:

detecting the destination address type of the second UDP data packet;

10. A computer-readable storage medium, having stored thereon a computer program which, when executed, implements the device discovery method of claim 8 or 9.