CN112887769A

CN112887769A - Display device

Info

Publication number: CN112887769A
Application number: CN202110079564.9A
Authority: CN
Inventors: 陆世明
Original assignee: Hisense Visual Technology Co Ltd
Current assignee: Qingdao Hisense Media Network Technology Co Ltd
Priority date: 2021-01-21
Filing date: 2021-01-21
Publication date: 2021-06-01
Anticipated expiration: 2041-01-21
Also published as: CN112887769B

Abstract

The application discloses display equipment for replace hardware synchronization equipment, realize the synchronous broadcast of many televisions in the same group from the software angle, the picture is unified, improves the demonstration experience of show model machine in the market. The display device is set as a main display device including: a display; a user interface; a controller respectively coupled to the display and the user interface for performing: establishing a connection with at least one slave display device; in response to an instruction of a user to play a film source, pushing a play-starting message to the slave display device to enable the slave display device to play the film source and sending a play progress inquiry message to the master display device, wherein the inquiry message comprises the play progress of the slave display device; and completing synchronous playing according to the playing progress of the slave display equipment and the playing progress of the master display equipment.

Description

Display device

Technical Field

The application relates to the technical field of display, in particular to a display device.

Background

In order to attract customers and understand the characteristic functions of the display equipment, each display equipment store has higher requirements on the playing and demonstration effects of the display equipment. Besides improving the image quality of the display equipment and manufacturing a high-quality demonstration film source, the method also has higher requirements on the overall demonstration effect of the plurality of display equipment. In addition, through picture comparison, the image quality effects of different levels of models can be reflected, and the display equipment with different prices can be promoted for customers with different requirements.

In order to realize synchronous playing in the current market, HDMI equipment is mostly connected with synchronous output in a split screen mode. The HDMI split screen equipment is high in price, and due to the service life of hardware and the like, updating and maintaining cost is high. In addition, the hardware device also has the problems of compatibility and the like to a new display device platform.

Disclosure of Invention

The embodiment of the application provides a display device for replacing hardware synchronization equipment, multiple televisions in the same group are played synchronously from the software perspective, pictures are unified, and demonstration experience of a display prototype in a market is improved.

In a first aspect, there is provided a display device configured as a main display device, the main display device including:

a display;

a user interface;

a controller respectively coupled to the display and the user interface for performing:

establishing a connection with at least one slave display device;

in response to an instruction of a user to play a film source, pushing a play-starting message to the slave display device to enable the slave display device to play the film source and sending a play progress inquiry message to the master display device, wherein the inquiry message comprises the play progress of the slave display device;

and completing synchronous playing according to the playing progress of the slave display equipment and the playing progress of the master display equipment.

In some embodiments, the controller is configured to perform establishing a connection with at least one slave display device in the following manner:

a connection is established with at least one slave display device via a message queue telemetry transport protocol and a user datagram protocol.

In some embodiments, the controller is further configured to perform the synchronous play according to the play progress of the slave display device and the play progress of the master display device in the following manner:

calculating a first playing progress difference value according to the playing progress of the main display device and the playing progress of the slave display device;

if the absolute value of the first playing progress difference is larger than the jump critical value, sending a first synchronization message to the slave display equipment so that the slave display equipment jumps the playing progress of the slave display equipment to the playing progress of the master display equipment, wherein the first synchronization message comprises the playing progress of the master display equipment;

if the first playing progress difference is larger than 0 and is between the jump critical value and the pause critical value, continuing playing after pausing the first playing progress difference;

wherein the skip threshold is greater than the pause threshold.

In some embodiments, the method further comprises pushing a play-start message to the slave display device to cause the slave display device to play the film source and send a play progress inquiry message to the master display device in the following manner:

and pushing a play starting message to the slave display equipment so that the slave display equipment plays the film source and sends a play progress inquiry message to the master display equipment for a first preset number of times at intervals of preset time.

and sending a second synchronous message to the slave display equipment so that the slave display equipment calculates a second play progress difference according to the play progress of the slave display equipment and the play progress of the master display equipment, if the absolute value of the second play progress difference is greater than the jump critical value, jumping the play progress of the slave display equipment to the play progress of the master display equipment, if the second play progress difference is greater than 0 and between the jump critical value and the pause critical value, continuing playing after the slave display equipment pauses the second play progress difference, wherein the second synchronous message comprises the play progress of the master display equipment.

and repeating the step of sending the second synchronous message to the slave display device for a second preset number of times.

In a second aspect, there is provided a display device provided as a slave display device, the slave display device comprising:

a display;

a user interface;

establishing a connection with a main display device;

receiving a play start message of a main display device, playing a film source same as the main display device and sending a play progress inquiry message to the main display device, so that the main display device sends a second synchronous message to a slave display device, wherein the second synchronous message comprises the play progress of the main display device;

and completing synchronous playing according to the playing progress of the main display equipment and the playing progress of the slave display equipment.

In some embodiments, the controller is further configured to perform the synchronous playing according to the playing progress of the master display device and the playing progress of the slave display device in the following manner:

calculating a second playing progress difference value according to the playing progress of the slave display equipment and the playing progress of the master display equipment;

if the absolute value of the difference value of the second playing progress is larger than the jump critical value, jumping the playing progress of the slave display equipment to the playing progress of the master display equipment;

and if the second playing progress difference is larger than 0 and is between the jump critical value and the pause critical value, continuing playing the slave display equipment after the second playing progress difference is paused, wherein the second synchronous message comprises the playing progress of the master display equipment.

In some embodiments, the controller is further configured to perform:

and receiving a first synchronization message, and jumping the playing progress of the slave display equipment to the playing progress of the master display equipment, wherein the first synchronization message comprises the playing progress of the master display equipment.

In the embodiment, the display device replaces hardware synchronization equipment, synchronous playing of a plurality of display devices in the same group is realized from the software perspective, pictures are uniform, and demonstration experience of a display prototype in a market is improved. The embodiment of the application provides a synchronous playing function from a software application layer, realizes lightweight, and can realize cross-platform synchronous demonstration.

Drawings

FIG. 1 illustrates a usage scenario of a display device according to some embodiments;

fig. 2 illustrates a hardware configuration block diagram of the control apparatus 100 according to some embodiments;

fig. 3 illustrates a hardware configuration block diagram of the display apparatus 200 according to some embodiments;

FIG. 4 illustrates a software configuration diagram in the display device 200 according to some embodiments;

5-6 illustrate a user interface diagram according to some embodiments;

FIG. 7 is a diagram illustrating a synchronous networking architecture for a same group of display devices, according to some embodiments;

an application software architecture diagram according to some embodiments is illustrated in FIG. 8;

FIG. 9 is an illustration of an on-line activity diagram on an anchor, in accordance with some embodiments;

FIG. 10 illustrates a live online from broadcast diagram according to some embodiments;

a synchronized playback timing diagram of a master display device and a slave display device according to some embodiments is illustrated in fig. 11.

Detailed Description

To make the purpose and embodiments of the present application clearer, the following will clearly and completely describe the exemplary embodiments of the present application with reference to the attached 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, and not all of the embodiments.

It should be noted that the brief descriptions of the terms in the present application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of the present application. These terms should be understood in their ordinary and customary meaning unless otherwise indicated.

The terms "first," "second," "third," and the like in the description and claims of this application and in the above-described drawings are used for distinguishing between similar or analogous objects or entities and not necessarily for describing a particular sequential or chronological order, unless otherwise indicated. It is to be understood that the terms so used are interchangeable under appropriate circumstances.

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

The term "module" refers to any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic, or combination of hardware or/and software code that is capable of performing the functionality associated with that element.

Fig. 1 is a schematic diagram of a usage scenario of a display device according to an embodiment. As shown in fig. 1, the display apparatus 200 is also in data communication with a server 400, and a user can operate the display apparatus 200 through the smart device 300 or the control device 100.

In some embodiments, the control apparatus 100 may be a remote controller, and the communication between the remote controller and the display device includes at least one of an infrared protocol communication or a bluetooth protocol communication, and other short-distance communication methods, and controls the display device 200 in a wireless or wired manner. The user may control the display apparatus 200 by inputting a user instruction through at least one of a key on a remote controller, a voice input, a control panel input, and the like.

In some embodiments, the smart device 300 may include any of a mobile terminal, a tablet, a computer, a laptop, an AR/VR device, and the like.

In some embodiments, the smart device 300 may also be used to control the display device 200. For example, the display device 200 is controlled using an application program running on the smart device.

In some embodiments, the smart device 300 and the display device may also be used for communication of data.

In some embodiments, the display device 200 may also be controlled in a manner other than the control apparatus 100 and the smart device 300, for example, the voice instruction control of the user may be directly received by a module configured inside the display device 200 to obtain a voice instruction, or may be received by a voice control apparatus provided outside the display device 200.

In some embodiments, the display device 200 is also in data communication with a server 400. The display device 200 may be allowed to be communicatively connected through a Local Area Network (LAN), a Wireless Local Area Network (WLAN), and other networks. The server 400 may provide various contents and interactions to the display apparatus 200. The server 400 may be a cluster or a plurality of clusters, and may include one or more types of servers.

In some embodiments, software steps executed by one step execution agent may be migrated on demand to another step execution agent in data communication therewith for execution. Illustratively, software steps performed by the server may be migrated to be performed on a display device in data communication therewith, and vice versa, as desired.

Fig. 2 exemplarily shows a block diagram of a configuration of the control apparatus 100 according to an exemplary embodiment. As shown in fig. 2, the control device 100 includes a controller 110, a communication interface 130, a user input/output interface 140, a memory, and a power supply. The control apparatus 100 may receive an input operation instruction from a user and convert the operation instruction into an instruction recognizable and responsive by the display device 200, serving as an interaction intermediary between the user and the display device 200.

In some embodiments, the communication interface 130 is used for external communication, and includes at least one of a WIFI chip, a bluetooth module, NFC, or an alternative module.

In some embodiments, the user input/output interface 140 includes at least one of a microphone, a touchpad, a sensor, a key, or an alternative module.

Fig. 3 shows a hardware configuration block diagram of the display apparatus 200 according to an exemplary embodiment.

In some embodiments, the display apparatus 200 includes at least one of a tuner demodulator 210, a communicator 220, a detector 230, an external device interface 240, a controller 250, a display 260, an audio output interface 270, a memory, a power supply, a user interface.

In some embodiments the controller comprises a central processor, a video processor, an audio processor, a graphics processor, a RAM, a ROM, a first interface to an nth interface for input/output.

In some embodiments, the display 260 includes a display screen component for displaying pictures, and a driving component for driving image display, a component for receiving image signals from the controller output, displaying video content, image content, and menu manipulation interface, and a user manipulation UI interface, etc.

In some embodiments, the display 260 may be at least one of a liquid crystal display, an OLED display, and a projection display, and may also be a projection device and a projection screen.

In some embodiments, the tuner demodulator 210 receives broadcast television signals via wired or wireless reception, and demodulates audio/video signals, such as EPG data signals, from a plurality of wireless or wired broadcast television signals.

In some embodiments, communicator 220 is a component for communicating with external devices or servers according to various communication protocol types. For example: the communicator may include at least one of a Wifi module, a bluetooth module, a wired ethernet module, and other network communication protocol chips or near field communication protocol chips, and an infrared receiver. The display apparatus 200 may establish transmission and reception of control signals and data signals with the control device 100 or the server 400 through the communicator 220.

In some embodiments, the detector 230 is used to collect signals of the external environment or interaction with the outside. For example, detector 230 includes a light receiver, a sensor for collecting ambient light intensity; alternatively, the detector 230 includes an image collector, such as a camera, which may be used to collect external environment scenes, attributes of the user, or user interaction gestures, or the detector 230 includes a sound collector, such as a microphone, which is used to receive external sounds.

In some embodiments, the external device interface 240 may include, but is not limited to, the following: high Definition Multimedia Interface (HDMI), analog or data high definition component input interface (component), composite video input interface (CVBS), USB input interface (USB), RGB port, and the like. The interface may be a composite input/output interface formed by the plurality of interfaces.

In some embodiments, the controller 250 and the modem 210 may be located in different separate devices, that is, the modem 210 may also be located in an external device of the main device where the controller 250 is located, such as an external set-top box.

In some embodiments, the controller 250 controls the operation of the display device and responds to user operations through various software control programs stored in memory. The controller 250 controls the overall operation of the display apparatus 200. For example: in response to receiving a user command for selecting a UI object to be displayed on the display 260, the controller 250 may perform an operation related to the object selected by the user command.

In some embodiments, the object may be any one of selectable objects, such as a hyperlink, an icon, or other actionable control. The operations related to the selected object are: displaying an operation connected to a hyperlink page, document, image, or the like, or performing an operation of a program corresponding to the icon.

In some embodiments the controller comprises at least one of a Central Processing Unit (CPU), a video processor, an audio processor, a Graphics Processing Unit (GPU), a RAM Random Access Memory (RAM), a ROM (Read-Only Memory), a first to nth interface for input/output, a communication Bus (Bus), and the like.

A CPU processor. For executing operating system and application program instructions stored in the memory, and executing various application programs, data and contents according to various interactive instructions receiving external input, so as to finally display and play various audio-video contents. The CPU processor may include a plurality of processors. E.g. comprising a main processor and one or more sub-processors.

In some embodiments, a graphics processor for generating various graphics objects, such as: at least one of an icon, an operation menu, and a user input instruction display figure. The graphic processor comprises an arithmetic unit, which performs operation by receiving various interactive instructions input by a user and displays various objects according to display attributes; the system also comprises a renderer for rendering various objects obtained based on the arithmetic unit, wherein the rendered objects are used for being displayed on a display.

In some embodiments, the video processor is configured to receive an external video signal, and perform at least one of video 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 signal displayed or played on the direct display device 200.

In some embodiments, the video processor includes at least one of a demultiplexing module, a video decoding module, an image composition 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 the video decoding module is used for processing the video signal after demultiplexing, including decoding, scaling and the like. And the image synthesis module is used for carrying out superposition mixing processing on the GUI signal input by the user or generated by the user and the video image after the zooming processing by the graphic generator so as to generate an image signal for display. And the frame rate conversion module is used for converting the frame rate of the input video. And the display formatting module is used for converting the received video output signal after the frame rate conversion, and changing the signal to be in accordance with the signal of the display format, such as an output RGB data signal.

In some embodiments, the audio processor is configured to receive an external audio signal, decompress and decode the received audio signal according to a standard codec protocol of the input signal, and perform at least one of noise reduction, digital-to-analog conversion, and amplification processing to obtain a sound signal that can be played in the speaker.

In some embodiments, a user may enter user commands on a Graphical User Interface (GUI) displayed on display 260, and the user 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 user input interface receives the user input command by recognizing the sound or gesture through the sensor.

In some embodiments, a "user interface" is a media interface for interaction and information exchange between an application or operating system and a user that enables conversion between an internal form of information and a form that is acceptable to the user. A commonly used presentation form of the User Interface is a Graphical User Interface (GUI), which refers to a User Interface related to computer operations and displayed in a graphical manner. It may be an interface element such as an icon, a window, a control, etc. displayed in the display screen of the electronic device, where the control may include at least one of an icon, a button, a menu, a tab, a text box, a dialog box, a status bar, a navigation bar, a Widget, etc. visual interface elements.

In some embodiments, user interface 280 is an interface that may be used to receive control inputs (e.g., physical buttons on the body of the display device, or the like).

In some embodiments, a system of a display device may include a Kernel (Kernel), a command parser (shell), a file system, and an application program. The kernel, shell, and file system together make up the basic operating system structure that allows users to manage files, run programs, and use the system. After power-on, the kernel is started, kernel space is activated, hardware is abstracted, hardware parameters are initialized, and virtual memory, a scheduler, signals and interprocess communication (IPC) are operated and maintained. And after the kernel is started, loading the Shell and the user application program. The application program is compiled into machine code after being started, and a process is formed.

Referring to fig. 4, in some embodiments, the system is divided into four layers, which are, from top to bottom, an Application (Applications) layer (referred to as an "Application layer"), an Application Framework (Application Framework) layer (referred to as a "Framework layer"), an Android runtime (Android runtime) layer and a system library layer (referred to as a "system runtime library layer"), and a kernel layer.

In some embodiments, at least one application program runs in the application program layer, and the application programs may be windows (windows) programs carried by an operating system, system setting programs, clock programs or the like; or an application developed by a third party developer. In particular implementations, the application packages in the application layer are not limited to the above examples.

The framework layer provides an Application Programming Interface (API) and a programming framework for the application program of the application layer. The application framework layer includes a number of predefined functions. The application framework layer acts as a processing center that decides to let the applications in the application layer act. The application program can access the resources in the system and obtain the services of the system in execution through the API interface.

As shown in fig. 4, in the embodiment of the present application, the application framework layer includes a manager (Managers), a Content Provider (Content Provider), and the like, where the manager includes at least one of the following modules: an Activity Manager (Activity Manager) is used for interacting with all activities running in the system; the Location Manager (Location Manager) is used for providing the system service or application with the access of the system Location service; a Package Manager (Package Manager) for retrieving various information related to an application Package currently installed on the device; a Notification Manager (Notification Manager) for controlling display and clearing of Notification messages; a Window Manager (Window Manager) is used to manage the icons, windows, toolbars, wallpapers, and desktop components on a user interface.

In some embodiments, the activity manager is used to manage the lifecycle of the various applications as well as general navigational fallback functions, such as controlling exit, opening, fallback, etc. of the applications. The window manager is used for managing all window programs, such as obtaining the size of a display screen, judging whether a status bar exists, locking the screen, intercepting the screen, controlling the change of the display window (for example, reducing the display window, displaying a shake, displaying a distortion deformation, and the like), and the like.

In some embodiments, the system runtime layer provides support for the upper layer, i.e., the framework layer, and when the framework layer is used, the android operating system runs the C/C + + library included in the system runtime layer to implement the functions to be implemented by the framework layer.

In some embodiments, the kernel layer is a layer between hardware and software. As shown in fig. 4, the core layer includes at least one of the following drivers: audio drive, display driver, bluetooth drive, camera drive, WIFI drive, USB drive, HDMI drive, sensor drive (like fingerprint sensor, temperature sensor, pressure sensor etc.) and power drive etc..

A schematic diagram of one user interface provided by the display device 200 is illustrated in fig. 5-6.

As shown in fig. 5, the display device may provide a user interface to the display that displays a master-slave setup control 511. The user can move the selector 52 to the master-slave setting control 511 through the control device and press the confirmation key on the control device, the user interface jumps to the user interface shown in fig. 6, a slave playing control 5111 and a master playing control 5112 are displayed on the user interface of fig. 6, and if the user moves the selector 52 to the slave playing control 5111 through the control device and presses the confirmation key on the control device, the display device is set as a slave display device; if the user moves the selector 52 to the slave play control 5111 through the control means and presses the enter key on the control means, the present display apparatus is set as the master display apparatus. If the display device is set as a master display device, the user can move the selector 52 to the play control 512 shown in fig. 5 through the control device and press the enter key on the control device, the display device plays the preset film source, and meanwhile, the slave display device connected with the display device also plays the preset film source, and the play progress is consistent with the play progress of the master display device.

It should be noted that a control refers to a visual object displayed by the user interface in the display device to represent corresponding content such as an icon, a thumbnail, a video clip, a link, etc.

The display forms of the controls are generally diversified. For example, the control may include textual content and/or an image for displaying a thumbnail related to the textual content. As another example, the control can be text and/or an icon of the application.

It should also be noted that the selector is used to indicate that any one of the controls has been selected, such as the focus object. In one aspect, the control may be selected or controlled by controlling movement of a display focus object in the display device according to an input from a user through the control means. Such as: the user can select and control the controls by controlling the movement of the focus object between the controls through the directional keys on the control device. On the other hand, the movement of each control displayed in the display device may be controlled according to the input of the user through the control device to cause the focus object to select or control the control. Such as: the user can control all the controls to move left and right through the direction keys on the control device, so that the focus object can be selected and the controls can be controlled when the position of the focus object is kept unchanged. The form of identification of the selector is often diversified. For example, the position of the focus object is identified by changing the border line, size, color, transparency, and outline of the text or image of the focus control, and/or the font, and the position of the focus object is realized or identified by setting the background color of the control.

The group of display equipment synchronously plays the same picture in the same store, so that the more tidy, clean and shocking demonstration effect can be brought to people, in addition, the image quality effects of different levels of machine types can be reflected through picture comparison, and the display equipment with different prices can be promoted for the clients with different requirements. In order to realize synchronous playing in the current market, HDMI equipment is mostly connected with synchronous output in a split screen mode. The HDMI split screen equipment is high in price, and due to the service life of hardware and the like, updating and maintaining cost is high. In addition, the hardware device also has the problems of compatibility and the like to a new display device platform.

In order to solve the foregoing technical problem, an embodiment of the present application provides a display device, where the display device may be set as a master display device and a slave display device according to a user requirement, and the master display device and the slave display device establish a connection.

In some embodiments, multiple display devices participating in synchronized playback are connected as a packet in the same network. The display devices in the same group are classified into two categories, one is a MASTER display device (MASTER), there is only one MASTER display device in the same group, and the other is a SLAVE display device (SLAVE), and there may be a plurality of SLAVE display devices. When the master display device plays the presentation source, the slave display devices all refer to the playing progress of the master display device, and synchronous playing is realized by adjusting the playing progress of the master display device and the slave display devices.

Fig. 7 is a diagram of a synchronous networking architecture for a same group of display devices. In some embodiments, as shown in FIG. 7, there is one MASTER Master display device and multiple SLAVE Slave display devices in a synchronization group. The main display device and the auxiliary display device carry two interactive protocols, namely, a Message Queue Telemetry Transport (MQTT) Protocol and a User Datagram Protocol (UDP). The MQTT protocol is responsible for receiving and sending synchronous information, and the UDP protocol is responsible for broadcasting on-line and off-line broadcast notifications. The main display device and the auxiliary display device are connected with an MQTT server (message queue telemetry transmission protocol server) through an MQTT client module and subscribe to the same theme, so that the main display device and the auxiliary display device are associated to prepare for receiving and sending subsequent synchronous information.

FIG. 8 is an application software architecture diagram. In some embodiments, as shown in fig. 8, the playing of the video file still uses the playing module of the system to implement the playing control function through the basic playing control interface. Meanwhile, two communication protocols of UDP and MQTT are introduced into the application layer and are responsible for communication interaction among a plurality of terminals, and finally the function of synchronous playing of the terminals is completed. Because the change of the system layer player is not involved and the change is only realized at the application layer, the scheme is application-level and has the advantages of light weight, good compatibility, easy maintenance and the like.

In some embodiments, as shown in fig. 9, after a display device is set as a main broadcast, the main broadcast is online and then starts the MQTT server and subscribes. After subscribing, the IP address of the anchor is broadcasted to the network through UDP broadcast information, after the message of the anchor on line is received from the anchor, if other anchors are subscribed, the subscription is cancelled, and a new anchor on line is subscribed again, namely, the anchor on line can kick off the anchor on line first, and only one anchor in the network is kept.

In some embodiments, as shown in fig. 10, a display device is configured to query the anchor information in the network through UPD broadcast messages after the anchor is online, the anchor receives the UDP broadcast query and then feeds back the UDP broadcast query, and the anchor receives the feedback and then subscribes to the MQTT.

In some embodiments, the step of the master display device playing synchronously with the slave display device is as follows:

the main display device receives a control instruction for playing the film source, which is input by a user operating the control device through the user interface.

For example, the user interface may receive a control instruction from the user to play the film source by pressing a direction key on the control device to select the play control and pressing a confirmation key on the control device.

And responding to a control instruction of playing the film source, starting playing by the main display device, and pushing a starting playing message to the auxiliary display device through the MQTT protocol.

After receiving a main play start message from the slave display device, playing the film source and sending a play progress inquiry message to the master display device, wherein the play progress inquiry message is used for inquiring the play progress of the master display device, and the play progress inquiry message also comprises the play progress of the slave display device;

after receiving the playing progress of the slave display equipment, the master display equipment compares the playing progress of the master display equipment with the playing progress of the slave display equipment, namely, calculates a first playing progress difference according to the playing progress of the master display equipment and the playing progress of the slave display equipment;

if the absolute value of the first playing progress difference is larger than the jump critical value, sending a first synchronization message to the slave display equipment, wherein the first synchronization message comprises the playing progress of the master display equipment;

the slave display equipment jumps from the playing progress of the slave display equipment to the playing progress of the master display equipment;

in some embodiments, the slave display device calls seek (jump interface) to synchronize with the master display device.

If the first playing progress difference is larger than 0 and is between the jump critical value and the pause critical value, the main display device continues playing after pausing the first playing progress difference; wherein the skip threshold is greater than the pause threshold.

In some embodiments, the first play progress difference being greater than 0 indicates that the play progress of the master display device is greater than the play progress of the slave display device. And calling pause (pause interface) by the main display equipment, and continuing playing after pausing the time unit of the difference value of the first playing progress.

If the first playing progress difference is smaller than 0 and the absolute value of the first playing progress difference is between the jump critical value and the pause critical value, the main display device continues playing after pausing the first playing progress difference, and can be adjusted in a mode of subsequently pausing the playing progress of the auxiliary display device without any processing. And if the first playing progress difference value is less than 0, the playing progress of the main display device is slower than that of the slave display device.

If the absolute value of the first playing progress difference is smaller than the jump critical value, no processing is needed.

The absolute value of the first playing progress difference value is smaller than the pause critical value, and an error area which does not influence the subjective experience synchronization effect is not influenced, so that no processing is carried out.

In some embodiments, the first play progress difference N1 is master-slave, where master: representing the current playing progress of a main player in unit of millisecond; slave: representing the current playing progress of the slave player in milliseconds; seek _ value: critical value of executing seek operation, unit millisecond; pause _ value: the threshold for performing the pause operation is in milliseconds.

If Math.abs (N1) > seek _ value, sending a first synchronization message to the slave display device, wherein the first synchronization message comprises the playing progress of the master display device; the slave display equipment jumps from the playing progress of the slave display equipment to the playing progress of the master display equipment;

if N1 is more than 0 and pause _ value is less than or equal to N1 is less than or equal to seek _ value, the main display device continues playing after pausing for N1 time units;

if N1 < 0 and pause _ value < Math. abs (N1) < seek _ value, do nothing;

abs (N1) < pause _ value, do nothing.

In some embodiments, it is possible to implement synchronous play of the master display device and the slave display device through the above steps, but it is still possible to make the master display device and the slave display device have an error in the play progress by calling seek (jump interface), so the slave display device may send a play progress inquiry message to the master display device multiple times, so that the master display device repeatedly performs the step of the difference between the play progress of the master display device and the play progress of the slave display device, and makes the master display device and the slave display device play synchronously. The number of repeated executions can be set according to specific needs.

In some embodiments, the step of performing the difference between the play progress of the master display device and the play progress of the slave display devices a plurality of times makes the play progress of the master display device less than or equal to the play progress of all the slave display devices as much as possible, so that the synchronous play of all the display devices is realized by adjusting the play progress of the slave display devices. In this case, the step of the master display device playing synchronously with the slave display device further comprises:

the main display device sends a second synchronous message to the auxiliary display device through an MQTT protocol, wherein the second synchronous message comprises the playing progress of the main display device;

after the slave display device receives the playing progress of the master display device, comparing the playing progress of the slave display device with the playing progress of the master display device, namely calculating a second playing progress difference according to the playing progress of the slave display device and the playing progress of the master display device;

And if the second playing progress difference is larger than 0 and is between the jump critical value and the pause critical value, continuing playing after the second playing progress difference is paused from the display equipment.

In some embodiments, the second play progress difference being greater than 0 indicates that the play progress of the slave display device is greater than the play progress of the master display device. And calling pause (pause interface) from the display equipment, pausing the first time and continuing playing after the time unit of the progress difference is played.

If the absolute value of the difference value of the second playing progress is smaller than the pause critical value, no processing is carried out;

the absolute value of the second playing progress difference is smaller than the pause critical value, and an error area which does not influence the subjective experience synchronization effect is not influenced, so that no processing is carried out.

In some embodiments, the second play progress difference N2 is slave-master, where master: representing the current playing progress of a main player in unit of millisecond; slave: representing the current playing progress of the slave player in milliseconds; seek _ value: critical value of executing seek operation, unit millisecond; pause _ value: the threshold for performing the pause operation is in milliseconds.

If Math.abs (N2) > seek _ value, jumping the playing progress of the slave display device to the playing progress of the master display device;

if N2 is more than 0 and pause _ value is less than or equal to N2 is less than or equal to seek _ value, the playing is continued after the display device pauses for N2 time units;

abs (N2) < pause _ value, do nothing.

In some embodiments, it is possible to achieve synchronous playing of the master display device and the slave display device through the above steps, but it is still possible to make the master display device and the slave display device play in error by calling seek (jump interface), so the master display device may send the second synchronization message multiple times, so that the slave display device repeatedly performs the step of the difference between the play progress of the master display device and the play progress of the slave display device, and makes the master display device and the slave display device play synchronously. The number of repeated executions can be set according to specific needs.

The embodiment of the application realizes the customization of the synchronous interaction strategy and the optimization of the reduced synchronous playing difference value, not only realizes the progress catch-up by using the skip interface of the player, but also timely introduces a pause mechanism to wait for pause when the condition is met, realizes the synchronous playing of a plurality of display devices in the same group, and has uniform pictures.

In some embodiments, as shown in fig. 11, the step of the master display device playing synchronously with the slave display device is as follows:

step S1101: responding to a control instruction of playing the film source, and starting playing by the main display equipment;

step S1102: the main display device pushes the broadcast starting message to the auxiliary display device;

step S1103: broadcasting from the display device;

step S1104: sending a play progress inquiry message to the main display device from the display device;

step S1105: calculating a first playing progress difference value of the playing progress of the main display device and the playing progress of the slave display device;

if the absolute value of the first playing progress difference is greater than the jump threshold, go to step S1106.

Step S1106: sending a first synchronization message to the slave display device, and informing the slave display device to jump;

if the first playing progress difference is greater than 0 and between the skip critical value and the pause critical value, step S1107 is performed.

Step S1107: the main display device continues playing after pausing the first playing progress difference;

step S1104 to step S11075 are repeatedly executed.

Step S1108: the master display device sends a second synchronization message to the slave display device;

step S1109: calculating a second playing progress difference value of the playing progress of the slave display equipment and the playing progress of the master display equipment;

if the absolute value of the second playing progress difference is greater than the jump threshold, go to step S1110.

Step S1110: jumping from the playing progress of the display equipment to the playing progress of the main display equipment;

if the second playing progress difference is greater than 0 and between the skip threshold and the pause threshold, go to step S111L

Step S1111: and the slave display equipment continues playing after the second playing progress difference is paused.

The steps S1109 to S11113 are repeatedly executed.

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 still 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.

The foregoing description, for purposes of explanation, has been presented in conjunction with specific embodiments. However, the illustrative discussions above are not intended to be exhaustive or to limit the embodiments to the precise forms disclosed above. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles and the practical application, to thereby enable others skilled in the art to best utilize the embodiments and various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. A display device characterized by being provided as a main display device, the main display device comprising:

a display;

a user interface;

establishing a connection with at least one slave display device;

2. The display device according to claim 1, wherein the controller is configured to perform establishing a connection with at least one slave display device in the following manner:

3. The display device according to claim 1, wherein the controller is further configured to perform the synchronized playback according to the playback progress of the slave display device and the playback progress of the master display device in the following manner:

wherein the skip threshold is greater than the pause threshold.

4. The display device according to claim 1, wherein the controller is further configured to execute a push start message to the slave display device in the following manner, so that the slave display device plays the film source and sends a play progress inquiry message to the master display device:

5. The display device according to claim 3 or 4, wherein the controller is further configured to perform the synchronized playback according to the playback progress of the slave display device and the playback progress of the master display device in the following manner:

6. The display device according to claim 5, wherein the controller is further configured to perform the synchronized playing according to the playing progress of the slave display device and the playing progress of the master display device in the following manner:

7. A display device provided as a slave display device, the slave display device comprising:

a display;

a user interface;

establishing a connection with a main display device;

8. The display device of claim 7, wherein the controller is configured to perform establishing a connection with at least one slave display device by:

9. The display device according to claim 7, wherein the controller is further configured to perform the synchronized playback according to the playback progress of the master display device and the playback progress of the slave display device in the following manner:

10. The display device according to claim 7, wherein the controller is further configured to perform: