CN112040287A

CN112040287A - Display device and video playing method

Info

Publication number: CN112040287A
Application number: CN202010894089.6A
Authority: CN
Inventors: 高斯太; 任子健
Original assignee: Qingdao Hisense Media Network Technology Co Ltd
Current assignee: Qingdao Hisense Media Network Technology Co Ltd; Juhaokan Technology Co Ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2020-12-04

Abstract

The application discloses a display device and a video playing method, wherein before video data is played, image frames are extracted from the received video data; judging whether the video data is 3D video data or not according to the extracted image frame and judging the structure type of the video data when the video data is 3D video data; playing the video data with a first playing rule when the video data is 3D video data of a first structure type; and when the video data is the 3D video data of the second structure type, playing the video data according to a second playing rule. The display device and the video playing method can automatically identify whether the received video data is in a 3D format, and can identify the structural type of the video data in the 3D format, such as the video data packaged in the upper format and the lower format, or the video data packaged in the left format and the right format, so that the playing rules can be automatically adjusted according to the identified video format and the structural type of the video data, user operation is not needed, and user experience is improved.

Description

Display device and video playing method

Technical Field

The present application relates to the field of display device technologies, and in particular, to a display device and a video playing method.

Background

The display device may provide a user with a play screen such as audio, video, pictures, and the like. Nowadays, display devices can provide users with not only live television program content received through data broadcasting, but also various applications and service content such as network video, network games, and the like.

Video data in 2D format and video data in 3D format can be played by a video player. In an existing implementation manner, before playing video data in a 3D format using a video player, a user needs to manually adjust a rule for playing a video by the player, for example, a setting interface of the video player selects a 3D format and a structure type of the data, so that the video player plays the video according to a play rule set by the user and applicable to the 3D format video data and the structure type of the data, and if the user does not adjust the rule for playing the video by the player before playing the 3D format video data using the video player, a play error occurs in the video player.

Disclosure of Invention

The application provides a display device and a video playing method.

In a first aspect, the present application provides a display device comprising:

a display for displaying a user interface, the user interface including a video playback window;

a controller configured to:

receiving video data, and extracting image frames from the received video data;

judging whether the video data is 3D video data or not according to the extracted image frame and judging the structure type of the video data when the video data is the 3D video data;

when the video data is 3D video data of a first structure type, playing the video data in the video playing window according to a first playing rule;

and when the video data is 3D video data of a second structure type, playing the video data in the video playing window according to a second playing rule.

In a second aspect, the present application further provides a video playing method, including:

receiving video data, and extracting image frames from the received video data;

playing the video data with a first playing rule when the video data is 3D video data of a first structure type;

and when the video data is 3D video data of a second structure type, playing the video data according to a second playing rule.

According to the technical scheme, the display equipment and the video playing method are provided, wherein before video data are played, the display equipment controller extracts image frames from the received video data; judging whether the video data is 3D video data or not according to the extracted image frame and judging the structure type of the video data when the video data is 3D video data; playing the video data with a first playing rule when the video data is 3D video data of a first structure type; and when the video data is the 3D video data of the second structure type, playing the video data according to a second playing rule. The display device and the video playing method can automatically identify whether the received video data is in a 3D format, and can identify the structural type of the video data in the 3D format, such as the video data packaged in the upper format and the lower format, or the video data packaged in the left format and the right format, so that the playing rules can be automatically adjusted according to the identified video format and the structural type of the video data, user operation is not needed, and user experience is improved.

Drawings

In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without any creative effort.

Fig. 1 is a schematic diagram illustrating an operational scenario between a display device and a control apparatus according to some embodiments;

a block diagram of a hardware configuration of a display device 200 according to some embodiments is illustrated in fig. 2;

a block diagram of the hardware configuration of the control device 100 according to some embodiments is illustrated in fig. 3;

a schematic diagram of a software configuration in a display device 200 according to some embodiments is illustrated in fig. 4;

FIG. 5 illustrates an icon control interface display diagram of an application in the display device 200, according to some embodiments;

FIG. 6 is a flow chart of a video playback method according to an exemplary embodiment of the present application;

FIG. 7 is a depiction of one possible user interface presented herein in accordance with an illustrative embodiment;

FIG. 8 is a flow chart of a video playback method according to an exemplary embodiment of the present application;

FIG. 9 is a schematic diagram of an image frame shown in accordance with an exemplary embodiment of the present application;

FIG. 10 is a schematic illustration of a first image and a second image shown in accordance with an exemplary embodiment of the present application;

FIG. 11 is a schematic illustration of a first image and a second image after reduction as illustrated herein in accordance with an exemplary embodiment;

FIG. 12 is a schematic illustration of a first grayscale image and a second grayscale image shown herein according to an exemplary embodiment;

FIG. 13 is a schematic illustration of fingerprint data shown in the present application in accordance with an exemplary embodiment;

FIG. 14 is a flow chart of a video playback method according to an exemplary embodiment of the present application;

FIG. 15 is a schematic illustration of a third image and a fourth image shown in accordance with an exemplary embodiment of the present application;

FIG. 16 is a schematic illustration of a first image, a second image, a third image, and a fourth image shown in accordance with an example embodiment of the present application.

Detailed Description

Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following examples do not represent all embodiments consistent with the present application. But merely as exemplifications of systems and methods consistent with certain aspects of the application, as recited in the claims.

All other embodiments, which can be derived by a person skilled in the art from the exemplary embodiments described herein without inventive step, are intended to be within the scope of the claims appended hereto. In addition, while the disclosure herein has been presented in terms of one or more exemplary examples, it should be appreciated that aspects of the disclosure may be implemented solely as a complete embodiment.

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 are not necessarily intended to limit the order or sequence of any particular one, Unless otherwise indicated. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.

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.

The term "module," as used herein, refers 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 this application refers to a component of an electronic device (such as the display device disclosed in this application) that is typically wirelessly controllable over a relatively short range of distances. Typically using infrared and/or Radio Frequency (RF) signals and/or bluetooth to connect with the electronic device, and may also include WiFi, wireless USB, bluetooth, motion sensor, 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 this application refers to a user's behavior through a change in hand shape or an action such as hand motion to convey a desired idea, action, purpose, or result.

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 device 200 through the mobile terminal 300 and the control apparatus 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 an infrared protocol communication or a bluetooth protocol communication, and other short-distance communication methods, etc., and the display device 200 is controlled by wireless or other wired methods. The user may input a user command 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.

In some embodiments, mobile terminals, tablets, computers, laptops, and other smart devices 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. The application, through configuration, may provide the user with various controls in an intuitive User Interface (UI) on a screen associated with the smart device.

In some embodiments, the mobile terminal 300 may install a software application with the display device 200 to implement connection communication through a network communication protocol for the purpose of one-to-one control operation and data communication. Such as: the mobile terminal 300 and the display device 200 can establish a control instruction protocol, synchronize a remote control keyboard to the mobile terminal 300, and control the display device 200 by controlling a user interface on the mobile terminal 300. The audio and video content displayed on the mobile terminal 300 can also be transmitted to the display device 200, so as to realize the synchronous display function.

As also shown in fig. 1, the display apparatus 200 also performs data communication with the server 400 through various communication means. 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. Illustratively, the display device 200 receives software program updates, or accesses a remotely stored digital media library, by sending and receiving information, as well as Electronic Program Guide (EPG) interactions. The server 400 may be a cluster or a plurality of clusters, and may include one or more types of servers. Other web service contents such as video on demand and advertisement services are provided through the server 400.

The display device 200 may be a liquid crystal display, an OLED display, a projection display device. The particular 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 of a computer support function including, but not limited to, a network tv, an intelligent tv, an Internet Protocol Tv (IPTV), and the like, in addition to the broadcast receiving tv function.

A hardware configuration block diagram of a display device 200 according to an exemplary embodiment is exemplarily shown in fig. 2.

In some embodiments, at least one of the controller 250, the tuner demodulator 210, the communicator 220, the detector 230, the input/output interface 255, the display 275, the audio output interface 285, the memory 260, the power supply 290, the user interface 265, and the external device interface 240 is included in the display apparatus 200.

In some embodiments, a display 275 receives image signals originating from the first processor output and displays video content and images and components of the menu manipulation interface.

In some embodiments, the display 275, includes a display screen assembly for presenting a picture, and a driving assembly that drives the display of an image.

In some embodiments, the video content is displayed from broadcast television content, or alternatively, from various broadcast signals that may be received via wired or wireless communication protocols. Alternatively, various image contents received from the network communication protocol and sent from the network server side can be displayed.

In some embodiments, the display 275 is used to present a user-manipulated UI interface generated in the display apparatus 200 and used to control the display apparatus 200.

In some embodiments, a driver assembly for driving the display is also included, depending on the type of display 275.

In some embodiments, display 275 is a projection display and may also include a projection device and a projection screen.

In some embodiments, communicator 220 is a component for communicating with external devices or external servers according to various communication protocol types. For example: the communicator may include at least one of a Wifi chip, a bluetooth communication protocol chip, a wired ethernet communication protocol chip, and other network communication protocol chips or near field communication protocol chips, and an infrared receiver.

In some embodiments, the display apparatus 200 may establish control signal and data signal transmission and reception with the external control apparatus 100 or the content providing apparatus through the communicator 220.

In some embodiments, the user interface 265 may be configured to receive infrared control signals from a control device 100 (e.g., an infrared remote control, etc.).

In some embodiments, the detector 230 is a signal used by the display device 200 to collect an external environment or interact with the outside.

In some embodiments, the detector 230 includes a light receiver, a sensor for collecting the intensity of ambient light, and parameters changes can be adaptively displayed by collecting the ambient light, and the like.

In some embodiments, the detector 230 may further include an image collector, such as a camera, etc., which may be configured to collect external environment scenes, collect attributes of the user or gestures interacted with the user, adaptively change display parameters, and recognize user gestures, so as to implement a function of interaction with the user.

In some embodiments, the detector 230 may also include a temperature sensor or the like, such as by sensing ambient temperature.

In some embodiments, the display apparatus 200 may adaptively adjust a display color temperature of an image. For example, the display apparatus 200 may be adjusted to display a cool tone when the temperature is in a high environment, or the display apparatus 200 may be adjusted to display a warm tone when the temperature is in a low environment.

In some embodiments, the detector 230 may also be a sound collector or the like, such as a microphone, which may be used to receive the user's voice. Illustratively, a voice signal including a control instruction of the user to control the display device 200, or to collect an ambient sound for recognizing an ambient scene type, so that the display device 200 can adaptively adapt to an ambient noise.

In some embodiments, as shown in fig. 2, the input/output interface 255 is configured to allow data transfer between the controller 250 and external other devices or other controllers 250. Such as receiving video signal data and audio signal data of an external device, or command instruction data, etc.

In some embodiments, the external device interface 240 may include, but is not limited to, the following: the interface can be any one or more of a high-definition multimedia interface (HDMI), an analog or data high-definition component input interface, a composite video input interface, a USB input interface, an RGB port and the like. The plurality of interfaces may form a composite input/output interface.

In some embodiments, as shown in fig. 2, the tuning demodulator 210 is configured to receive a broadcast television signal through a wired or wireless receiving manner, perform modulation and demodulation processing such as amplification, mixing, resonance, and the like, and demodulate an audio and video signal from a plurality of wireless or wired broadcast television signals, where the audio and video signal may include a television audio and video signal carried in a television channel frequency selected by a user and an EPG data signal.

In some embodiments, the frequency points demodulated by the tuner demodulator 210 are controlled by the controller 250, and the controller 250 can send out control signals according to user selection, so that the modem responds to the television signal frequency selected by the user and modulates and demodulates the television signal carried by the frequency.

In some embodiments, the broadcast television signal may be classified into a terrestrial broadcast signal, a cable broadcast signal, a satellite broadcast signal, an internet broadcast signal, or the like according to the broadcasting system of the television signal. Or may be classified into a digital modulation signal, an analog modulation signal, and the like according to a modulation type. Or the signals are classified into digital signals, analog signals and the like according to the types of the signals.

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. Therefore, the set top box outputs the television audio and video signals modulated and demodulated by the received broadcast television signals to the main body equipment, and the main body equipment receives the audio and video signals through the first input/output interface.

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 may control 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 275, 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 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 the 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.

As shown in fig. 2, the controller 250 includes at least one of a Random Access Memory 251 (RAM), a Read-Only Memory 252 (ROM), a video processor 270, an audio processor 280, other processors 253 (e.g., a Graphics Processing Unit (GPU), a Central Processing Unit 254 (CPU), a Communication Interface (Communication Interface), and a Communication Bus 256(Bus), which connects the respective components.

In some embodiments, RAM 251 is used to store temporary data for the operating system or other programs that are running.

In some embodiments, ROM 252 is used to store instructions for various system boots.

In some embodiments, the ROM 252 is used to store a Basic Input Output System (BIOS). The system is used for completing power-on self-test of the system, initialization of each functional module in the system, a driver of basic input/output of the system and booting an operating system.

In some embodiments, when the power-on signal is received, the display device 200 starts to power up, the CPU executes the system boot instruction in the ROM 252, and copies the temporary data of the operating system stored in the memory to the RAM 251 so as to start or run the operating system. After the start of the operating system is completed, the CPU copies the temporary data of the various application programs in the memory to the RAM 251, and then, the various application programs are started or run.

In some embodiments, processor 254 is used to execute operating system and application program instructions stored in memory. 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.

In some demonstrative embodiments, processor 254 may include a plurality of processors. The plurality of processors may include a main processor and one or more sub-processors. 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. One or more sub-processors for one operation in a standby mode or the like.

In some embodiments, the graphics processor 253 is used to generate 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 the system 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 270 is configured to receive an external video signal, and perform video processing such as decompression, decoding, scaling, noise reduction, frame rate conversion, resolution conversion, image synthesis, and the like according to a standard codec protocol of the input signal, so as to obtain a signal that can be displayed or played on the direct display device 200.

In some embodiments, video processor 270 includes a demultiplexing module, a video decoding module, an image synthesis 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 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.

The frame rate conversion module is configured to convert an input video frame rate, such as a 60Hz frame rate into a 120Hz frame rate or a 240Hz frame rate, and the normal format is implemented in, for example, an interpolation frame mode.

The display format module is used for converting the received video output signal after the frame rate conversion, and changing the signal to conform to the signal of the display format, such as outputting an RGB data signal.

In some embodiments, the graphics processor 253 and the video processor may be integrated or separately configured, and when the graphics processor and the video processor are integrated, the graphics processor and the video processor may perform processing of graphics signals output to the display, and when the graphics processor and the video processor are separately configured, the graphics processor and the video processor may perform different functions, respectively, for example, a GPU + frc (frame Rate conversion) architecture.

In some embodiments, the audio processor 280 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 noise reduction, digital-to-analog conversion, and amplification processes to obtain an audio signal that can be played in a speaker.

In some embodiments, video processor 270 may comprise one or more chips. The audio processor may also comprise one or more chips.

In some embodiments, the video processor 270 and the audio processor 280 may be separate chips or may be integrated together with the controller in one or more chips.

In some embodiments, the audio output, under the control of controller 250, receives sound signals output by audio processor 280, such as: the speaker 286, and an external sound output terminal of a generating device that can output to an external device, in addition to the speaker carried by the display device 200 itself, such as: external sound interface or earphone interface, etc., and may also include a near field communication module in the communication interface, for example: and the Bluetooth module is used for outputting sound of the Bluetooth loudspeaker.

The power supply 290 supplies power to the display device 200 from the power input from the external power source under the control of the controller 250. The power supply 290 may include a built-in power supply circuit installed inside the display apparatus 200, or may be a power supply interface installed outside the display apparatus 200 to provide an external power supply in the display apparatus 200.

A user interface 265 for receiving an input signal of a user and then transmitting the received user input signal to the controller 250. The user input signal may be a remote controller signal received through an infrared receiver, and various user control signals may be received through the network communication module.

In some embodiments, the user inputs a user command through the control apparatus 100 or the mobile terminal 300, the user input interface responds to the user input through the controller 250 according to the user input, and the display device 200 responds to the user input through the controller 250.

In some embodiments, a user may enter user commands on a Graphical User Interface (GUI) displayed on the display 275, 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 a visual interface element such as an icon, a button, a menu, a tab, a text box, a dialog box, a status bar, a navigation bar, a Widget, etc.

The memory 260 includes a memory storing various software modules for driving the display device 200. Such as: various software modules stored in the first memory, including: at least one of a basic module, a detection module, a communication module, a display control module, a browser module, and various service modules.

The base module is a bottom layer software module for signal communication between various hardware in the display device 200 and for sending processing and control signals to the upper layer module. The detection module is used for collecting various information from various sensors or user input interfaces, and the management module is used for 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 used for controlling the display to display the image content, and can be used for playing the multimedia image content, UI interface and other information. And the communication module is used for carrying out control and data communication with external equipment. And the browser module is used for executing a module for data communication between browsing servers. And the service module is used for providing various services and modules including various application programs. Meanwhile, the memory 260 may store a visual effect map for receiving external data and user data, images of various items in various user interfaces, and a focus object, etc.

Fig. 3 exemplarily shows a block diagram of a configuration of the control apparatus 100 according to an exemplary embodiment. As shown in fig. 3, the control apparatus 100 includes a controller 110, a communication interface 130, a user input/output interface, a memory, and a power supply source.

The control device 100 is configured to control the display device 200 and may receive an input operation instruction of 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. Such as: the user responds to the channel up and down operation by operating the channel up and down keys on the control device 100.

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 apparatus 200 according to user demands.

In some embodiments, as shown in fig. 1, a mobile terminal 300 or other intelligent electronic device may function similar to the control device 100 after installing an application that manipulates the display device 200. Such as: the user may implement the functions of controlling the physical keys of the device 100 by installing applications, various function keys or virtual buttons of a graphical user interface available on the mobile terminal 300 or other intelligent electronic device.

The controller 110 includes a processor 112 and RAM 113 and ROM 114, a communication interface 130, and a communication bus. The controller is used to control the operation of the control device 100, as well as the communication cooperation between the internal components and the external and internal data processing functions.

The communication interface 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 communication interface 130 may include at least one of a WiFi chip 131, a bluetooth module 132, an NFC module 133, and other near field communication modules.

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, keys 144, and other input interfaces. 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, the interface 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 communication interface 130 and an input-output interface 140. The control device 100 is provided with a communication interface 130, such as: the WiFi, bluetooth, NFC, etc. modules may transmit the user input command to the display device 200 through the WiFi protocol, or the bluetooth protocol, or the NFC protocol code.

A memory 190 for storing various operation programs, data and applications for driving and controlling the control apparatus 200 under the control of the controller. 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 various elements of the control device 100 under the control of the controller. A battery and associated control circuitry.

In some embodiments, the system 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 an Application (Applications) layer (abbreviated as "Application layer"), an Application Framework (Application Framework) layer (abbreviated as "Framework layer"), an Android runtime (Android runtime) and system library layer (abbreviated as "system runtime library layer"), and a kernel layer from top to bottom.

In some embodiments, at least one application program runs in the application program layer, and the application programs can be Window (Window) programs carried by an operating system, system setting programs, clock programs, camera applications and the like; or may be an application developed by a third party developer such as a hi program, a karaoke program, a magic mirror program, or the like. In specific implementation, the application packages in the application layer are not limited to the above examples, and may actually include other application packages, which is not limited in this embodiment of the present application.

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 to: managing the life cycle of each application program and the general navigation backspacing function, such as controlling the exit of the application program (including switching the user interface currently displayed in the display window to the system desktop), opening, backing (including switching the user interface currently displayed in the display window to the previous user interface of the user interface currently displayed), and the like.

In some embodiments, the window manager is configured to manage all window processes, such as obtaining a display size, determining whether a status bar is available, locking a screen, intercepting a screen, controlling a display change (e.g., zooming out, dithering, distorting, etc.) 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 drive, bluetooth drive, camera drive, WIFI drive, USB drive, HDMI drive, sensor drive (such as fingerprint sensor, temperature sensor, touch sensor, pressure sensor, etc.), and so on.

In some embodiments, the kernel layer further comprises a power driver module for power management.

In some embodiments, software programs and/or modules corresponding to the software architecture of fig. 4 are stored in the first memory or the second memory shown in fig. 2 or 3.

In some embodiments, taking the magic mirror application (photographing application) as an example, when the remote control receiving device receives a remote control input operation, a corresponding hardware interrupt is sent to the kernel layer. The kernel layer processes the input operation into an original input event (including information such as a value of the input operation, a timestamp of the input operation, etc.). The raw input events are stored at the kernel layer. The application program framework layer obtains an original input event from the kernel layer, identifies a control corresponding to the input event according to the current position of the focus and uses the input operation as a confirmation operation, the control corresponding to the confirmation operation is a control of a magic mirror application icon, the magic mirror application calls an interface of the application framework layer to start the magic mirror application, and then the kernel layer is called to start a camera driver, so that a static image or a video is captured through the camera.

In some embodiments, for a display device with a touch function, taking a split screen operation as an example, the display device receives an input operation (such as a split screen operation) that a user acts on a display screen, and the kernel layer may generate a corresponding input event according to the input operation and report the event to the application framework layer. The window mode (such as multi-window mode) corresponding to the input operation, the position and size of the window and the like are set by an activity manager of the application framework layer. And the window management of the application program framework layer draws a window according to the setting of the activity manager, then sends the drawn window data to the display driver of the kernel layer, and the display driver displays the corresponding application interface in different display areas of the display screen.

In some embodiments, as shown in fig. 5, the application layer containing at least one application may display a corresponding icon control in the display, such as: the system comprises a live television application icon control, a video on demand application icon control, a media center application icon control, an application center icon control, a game application icon control and the like.

In some embodiments, the live television application may provide live television via 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.

In some embodiments, 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.

In some embodiments, the media center application may provide various applications for multimedia content playback. For example, a media center, which may be other than live television or video on demand, may provide services that a user may access to various images or audio through a media center application.

In some embodiments, an application center may provide storage for various applications. 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 the smart television. The application center may obtain these applications from different sources, store them in local storage, and then be operable on the display device 200.

Based on the display device 200 as shown in fig. 1 to 5, video data in 2D format and video data in 3D format can be played by a video player. In an existing implementation manner, before playing video data in a 3D format using a video player, a user needs to manually adjust a rule for playing a video by the player, for example, a setting interface of the video player selects a 3D format and a structure type of the data, so that the video player plays the video according to a play rule set by the user and applicable to the 3D format video data and the structure type of the data, and if the user does not adjust the rule for playing the video by the player before playing the 3D format video data using the video player, a play error occurs in the video player.

The embodiment of the application provides a video playing method, which can automatically identify whether received video data is in a 3D format, and identify the structural type of the video data in the 3D format, such as the video data packaged in the upper format and the lower format, or the video data packaged in the left format and the right format, so that the playing rule can be automatically adjusted according to the identified video format and the structural type thereof, user operation is not needed, and user experience is improved.

The video playing method provided by the embodiment of the present application includes, but is not limited to, being applied to the display device shown in fig. 1 to 5, and when it is applied to the display device, its execution subject may be the controller 250. Therefore, the present application also provides a display device based on the display device shown in fig. 1 to 5, wherein the controller 250 is configured to perform some or all of the steps of the video playing method provided by the present application. As shown in fig. 6, the method may include:

step 601, receiving video data, and extracting image frames from the received video data.

The video data may be returned to the display device at the server in response to a data request by the display device. Wherein the video playing software sends a data request to the server in response to a user opening a link to a certain video resource on the application interface.

Fig. 7 is a user interface exemplarily illustrated in the present application, which is an implementation of an application home page of the video playing software. As shown in FIG. 7, the application homepage displays a plurality of controls corresponding to video resources, such as movie A1-A5, TV show B1-B5, fantasy program C1-C5, etc. When the user operates any one video resource control, the controller responds to the user operation and requests the server for the video data corresponding to the video resource control. The received video data may be video data in a 2D video format, i.e., 2D video data, or may be video data in a 3D video format, i.e., 3D video data.

It should be understood that the structure types of common 3D video data include an upper and lower structure and a left and right structure. In the embodiments of the present application, the upper and lower structures are also referred to as a first structure type, and the left and right structures are also referred to as a second structure type.

In step 601, image frames are extracted from the received video data to use the image frames for analyzing whether the video data is in a 3D video format, and to analyze a structure type of the 3D video data when the video data is in the 3D video format.

It should be understood that the video data will be segmented, e.g., into slice header data, slice trailer data, and slice trailer data, according to the total duration of the video or a specified tag on the time axis, such as a tag indicating the start of a feature. Generally, the video data received by the display device first is the slice header data, then the positive slice data is received, and finally the slice trailer data is received.

Based on this, in order to reduce the data processing amount for judging the video format and the video structure type as much as possible, in some possible implementation manners, the image frame is extracted from the received slice header data, the video format and the structure type are judged according to the image frame extracted from the slice header data, the corresponding playing rule is determined according to the judgment result, and the playing of the whole video data is completed according to the corresponding playing rule. The number of extracted image frames may be calculated by combining the video frame rate, the duration corresponding to the slice header data, and the predetermined sampling rate, which is not limited in the present application. It is understood that the maximum number of extracted image frames results in more accurate determination results, but the data processing amount will also become larger.

In an actual implementation scenario, when a user watches one video resource, the currently played video resource can be switched to another video resource through user input (such as key input, voice input, and the like). For example, the user may select another episode for playback from an episode control displayed on the top of the video playback screen. When the user switches to a new video resource, the controller will receive new video data and need to extract image frames from the new video data for determining the video format and structure type of the new video data. That is, before switching video resources, the controller extracts at least one image frame from the received slice header data of the first video data; after switching the video resource, the controller extracts at least one image frame from the received slice header data of the second video data; the first video data and the second video data are respectively received video data before and after video resource switching.

In other implementations of the present application, N time periods obtained by equally dividing the total duration of video data by N are provided, each time period is a preset time period, at least one image frame is sequentially extracted from the video data corresponding to each preset time period, and the format and structure type of the video is determined according to all the extracted image frames.

Step 602, determining whether the video data is 3D video data and a structure type of the video data when the video data is the 3D video data according to the extracted image frame.

In some embodiments, it is first determined whether the video data is 3D video data of a first structure type according to the extracted image frame, and if not, it is then determined whether the video data is 3D video data of a second structure type according to the extracted image frame, and if not, the video data is 2D video data.

In some embodiments, it is determined whether the video data is 3D video data of the first structure type according to the steps shown in fig. 8:

step 801, dividing the image frame into a first image and a second image according to a symmetry axis of the image frame in a vertical direction.

It is assumed that M image frames are extracted from the received video data in step 601, and the processing of steps 801 to 803 is performed for each image frame.

Fig. 9 is a possible image frame exemplarily shown in the present application, where a dotted line is a symmetry axis of the image frame in a vertical direction, and the image frame is sliced along the symmetry axis to obtain a first image and a second image as shown in fig. 10.

Step 802, acquiring fingerprint data of the first image and the second image respectively.

In specific implementation, the first image and the second image are firstly reduced to specified sizes so as to remove detail features of the images, retain the structure and the light and shade features of the images and abandon differences caused by different sizes or proportions. Illustratively, the first image and the second image may be reduced to a size of 8 × 8, such that the reduced first image and second image are shown in fig. 11, and each image includes 64 pixels. And then carrying out gray level processing on the reduced image to obtain a first gray level image and a second gray level image, and respectively calculating the gray level average value of the first gray level image and the second gray level image, namely calculating the average value according to the pixel values of all the pixel points. Illustratively, the 8 × 8 first and second images may be processed into 64-level gray scale, that is, all pixels have 64 colors at most, and the obtained first and second gray scale images and the gray scale value of each pixel thereof may be as shown in fig. 12, where the average gray scale value of the first gray scale image is 43 and the average gray scale value of the second gray scale image is 44 in this example. Finally, comparing the gray value of each pixel point in the first gray image with the gray average value of the first gray image to obtain fingerprint data of the first gray image, and comparing the gray value of each pixel point in the second gray image with the gray average value of the second gray image to obtain fingerprint data of the second gray image; in the comparison process, for each pixel point, if the gray value is smaller than the gray average value compared with the pixel point, one-bit fingerprint data 0 is recorded, if the gray value is larger than or equal to the gray average value compared with the pixel point, one-bit fingerprint data 1 is recorded, and the recording results corresponding to all the pixel points form the fingerprint data of the image. For example, comparing the gray value of each pixel point on the first gray image and the second gray image shown in fig. 12 with the corresponding average value of the gray values, the obtained recording result and fingerprint data are shown in fig. 13, where the fingerprint data of the gray image with the size of 8 × 8 is one 64-bit data.

Step 803, determining whether the similarity between the first image and the second image meets a preset threshold according to the fingerprint data of the first image and the second image, and determining the number of groups of the first image and the second image with the similarity meeting the preset threshold.

Specifically, the fingerprint data of the first image and the fingerprint data of the second image are correspondingly compared to determine the number of matching bits of the fingerprint data of the two images, for example, if the 2 nd bit of the fingerprint data of the first image is 0 and the 2 nd bit of the fingerprint data of the second image is 0, the 2 nd bits of the fingerprint data of the two images match, and if the 2 nd bit of the fingerprint data of the first image is 0 and the 2 nd bit of the fingerprint data of the second image is 1, the 2 nd bits of the fingerprint data of the two images match. And judging whether the matching digit of the fingerprint data of the two images meets a preset threshold value, if so, indicating that the similarity of the first image and the second image meets the preset threshold value, otherwise, indicating that the similarity of the first image and the second image does not meet the preset threshold value.

After the processing of

steps

801 and 803 is performed on each extracted image frame, the number of groups of the first image and the second image with the similarity satisfying the preset threshold, that is, the number of the image frames which are symmetrical left and right, can be obtained.

Step 804, if the number of groups of the first image and the second image which meet the preset threshold is greater than the preset number of groups, determining that the video data is 3D video data of the first structure type.

If the number of the image frames which are symmetrical left and right in the extracted image frames is larger than a preset value, the video data is 3D video data with a first structure type, namely 3D video data with left and right structures.

Step 805, if the number of groups of the first image and the second image that meet the preset threshold is not greater than the preset number of groups, determining that the video data is not the 3D video data or determining that the video data is the 3D video data of the second structure type, where the preset number of groups is determined according to the number of extracted image frames.

If the number of the left and right symmetric image frames in the extracted image frames is not greater than the preset value, it indicates that the video data is not the 3D video data of the first structure type, and may be the 3D video data of the second structure type or the 2D video data.

When it is determined that the received video data is not 3D video data of the first structure type, it may be determined whether the video data is 3D video data of the second structure type according to the steps shown in fig. 14:

step 141, the image frame is cut into a third image and a fourth image according to the symmetry axis of the image frame in the horizontal direction.

Assume that M image frames are extracted from the received video data in step 601, and the processing of steps 141 to 143 is performed for each image frame.

Illustratively, slicing the image frame shown in fig. 9 along its axis of symmetry in the horizontal direction will result in a third image and a fourth image as shown in fig. 15.

And 142, respectively acquiring fingerprint data of the third image and the fourth image.

In the embodiment of the present application, the method for acquiring the fingerprint data of the third image and the fourth image is the same as the method for acquiring the fingerprint data of the first image and the second image in the foregoing embodiment, and details are not repeated here.

Step 143, determining whether the similarity between the third image and the fourth image meets a preset threshold according to the fingerprint data of the third image and the fourth image, and determining the number of groups of the third image and the fourth image with the similarity meeting the preset threshold.

In the embodiment of the present application, the method for determining whether the similarity between the third image and the fourth image meets the preset threshold according to the fingerprint data is the same as the method for determining whether the similarity between the first image and the second image meets the preset threshold according to the fingerprint data in the foregoing embodiment, and details thereof are omitted here.

It should be noted that, if the similarity between the third image and the fourth image satisfies the preset threshold, the image frames corresponding to the set of third image and the set of fourth image are vertically symmetric.

In step 144, if the number of sets of the third image and the fourth image that satisfy the preset threshold is greater than the preset number of sets, it is determined that the video data is 3D video data of the second structure type.

If the number of the image frames which are symmetrical up and down in the extracted image frames is larger than a preset value, the video data is the 3D video data with the second structure type, namely the 3D video data with the up and down structure.

Step 145, if the number of sets of the third image and the fourth image meeting the preset threshold is not greater than the preset number of sets, determining that the video data is not the 3D video data or determining that the video data is the 3D video data of the first structure type, wherein the preset number of sets is determined according to the number of the extracted image frames.

If the number of the left and right symmetric image frames in the extracted image frames is not greater than the preset value, it indicates that the video data is not the 3D video data of the second structure type, which may be the 3D video data of the first structure type, or may be the 2D video data. If it is determined that the video data is neither the 3D video data of the first structure type nor the 3D video data of the second structure type, it may be determined that the video data is 2D video data.

Based on a similar processing concept as the embodiment shown in fig. 7 and fig. 15, in other embodiments of the present application, the extracted image frames are analyzed according to the following steps 161-166 to determine the format and structure type of the video data:

step 161, the image frame is cut into a first image, a second image, a third image and a fourth image according to the symmetry axis of the image frame in the vertical direction and the symmetry axis in the horizontal direction.

Illustratively, slicing the image frame shown in fig. 9 according to its symmetry axis in the horizontal direction and its symmetry axis in the vertical direction will result in the first, second, third and fourth images shown in fig. 16.

Step 162, acquiring fingerprint data of the first image, the second image, the third image and the fourth image respectively.

In a specific implementation, only the fingerprint data of any three of the first image, the second image, the third image and the fourth image may be acquired, for example, the fingerprint data of the first image, the second image and the third image may be acquired. It should be understood that the method for acquiring the fingerprint data of the image is the same as that used in the previous embodiment, and is not described herein.

And 163, judging whether the similarity between the first image and the third image, the similarity between the second image and the fourth image, the similarity between the first image and the second image and/or the similarity between the third image and the fourth image meet a preset threshold value or not according to the fingerprint data of the first image, the second image, the third image and the fourth image, and determining the number of groups of the first image and the third image, the second image and the fourth image, the first image and the second image and/or the third image and the fourth image with the similarity meeting the preset threshold value.

For example, in step 163, it may be determined whether the similarity between the first image and the third image satisfies a preset threshold according to the fingerprint data of the first image, the second image and the third image, and at the same time, it may be determined whether the similarity between the first image and the second image satisfies the preset threshold. It should be understood that if the similarity of the first image and the third image satisfies the preset threshold, it indicates that the image frames corresponding to the set of first image and the third image are vertically symmetrical, and similarly, if the similarity of the first image and the second image satisfies the preset threshold, it indicates that the image frames corresponding to the set of first image and the second image are horizontally symmetrical.

For another example, in step 163, it may be determined whether the similarity between the second image and the fourth image satisfies a preset threshold according to the fingerprint data of the second image, the third image and the fourth image, and at the same time, it may be determined whether the similarity between the third image and the fourth image satisfies the preset threshold. It should be understood that if the similarity of the second image and the fourth image satisfies the preset threshold, it indicates that the image frames corresponding to the set of second image and the fourth image are vertically symmetrical, and similarly, if the similarity of the third image and the fourth image satisfies the preset threshold, it indicates that the image frames corresponding to the set of third image and the fourth image are horizontally symmetrical.

In step 164, if the number of sets of the first image and the second image or the number of sets of the third image and the fourth image, which satisfy the preset threshold, is greater than the preset number, it is determined that the video data is 3D video data of the first structure type.

Step 165, if the number of groups of the first image and the third image or the number of groups of the second image and the fourth image, which meet the preset threshold value, is greater than the preset number, determining that the video data is 3D video data of the second structure type.

Step 166, if the number of groups of the first image and the third image, the second image and the fourth image, the first image and the second image, or the third image and the fourth image, which meet a preset threshold value, is not greater than a preset number, it is determined that the video data is not 3D video data.

Step 603, when the video data is 3D video data of a first structure type, playing the video data in the video playing window according to a first playing rule.

And step 604, when the video data is 3D video data of a second structure type, playing the video data in the video playing window according to a second playing rule.

It should be understood that the first playback rule is a playback rule applicable to 3D video data of a first structure type, and the second playback rule is a playback rule applicable to 3D video data of a second structure type.

In summary, the embodiment of the present application provides a display device and a video playing method, when video data is received, an image frame is extracted from the received video data; judging whether the video data is 3D video data or not according to the extracted image frame and judging the structure type of the video data when the video data is 3D video data; playing the video data with a first playing rule when the video data is 3D video data of a first structure type; and when the video data is the 3D video data of the second structure type, playing the video data according to a second playing rule. The method can automatically identify whether the received video data is the video data in the 3D format, and can identify the structure type of the video data in the 3D format, such as the video data packaged in the upper format and the lower format, or the video data packaged in the left format and the right format, so that the playing rule can be automatically adjusted according to the identified video format and the structure type of the video data, the user operation is not needed, and the user experience is further improved.

In specific implementation, the present invention further provides a computer storage medium, where the computer storage medium may store a program, and the program may include some or all of the steps in the embodiments of the video playing method provided by the present invention when executed. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM) or a Random Access Memory (RAM).

Those skilled in the art will readily appreciate that the techniques of the embodiments of the present invention may be implemented as software plus a required general purpose hardware platform. Based on such understanding, the technical solutions in the embodiments of the present invention may be essentially or partially implemented in the form of a software product, which may be stored in a storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the embodiments or some parts of the embodiments.

The same and similar parts in the various embodiments in this specification may be referred to each other. In particular, as for the method embodiment, since it is substantially similar to the display apparatus embodiment, the description is simple, and the relevant points can be referred to the description in the method embodiment.

The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention.

Claims

1. A display device, comprising:

a controller configured to:

receiving video data, and extracting image frames from the received video data;

2. The display device of claim 1, wherein said extracting image frames from the received video data comprises:

and extracting image frames from the received leader data, wherein the leader data is determined according to the duration of the video data or the designated label on the time axis of the video data.

3. The display device according to claim 2, wherein the extracting image frames from the received slice header data comprises:

before switching video resources, extracting at least one image frame from the received head data of the first video data;

after switching video resources, extracting at least one image frame from the received slice header data of the second video data;

the first video data and the second video data are respectively received video data before and after video resource switching.

4. The display device of claim 1, wherein said extracting image frames from the received video data comprises:

and sequentially extracting at least one image frame from the video data corresponding to each preset time period, wherein the preset time period is a time period obtained by equally dividing the total duration of the video data by N.

5. The apparatus as claimed in claim 1, wherein said determining whether the video data is 3D video data and a structure type of the video data when the video data is the 3D video data from the extracted image frame comprises:

according to the symmetry axis of the image frame in the vertical direction, the image frame is cut into a first image and a second image;

respectively acquiring fingerprint data of the first image and the second image;

judging whether the similarity of the first image and the second image meets a preset threshold value according to the fingerprint data of the first image and the second image, and determining the number of groups of the first image and the second image with the similarity meeting the preset threshold value;

if the number of groups of the first image and the second image which meet the preset threshold is larger than the preset number of groups, determining that the video data is 3D video data of a first structure type;

and if the group number of the first image and the second image which meet the preset threshold value is not larger than the preset group number, determining that the video data is not the 3D video data or determining that the video data is the 3D video data of the second structure type, wherein the preset group number is determined according to the number of the extracted image frames.

6. The apparatus according to claim 1, wherein said determining whether the video data is 3D video data and a structure type of the video data when the video data is the 3D video data from the extracted image frames comprises:

according to the symmetry axis of the image frame in the horizontal direction, the image frame is cut into a third image and a fourth image;

respectively acquiring fingerprint data of the third image and the fourth image;

judging whether the similarity of the third image and the fourth image meets a preset threshold value according to the fingerprint data of the third image and the fourth image, and determining the number of groups of the third image and the fourth image with the similarity meeting the preset threshold value;

if the number of the third image and the fourth image which meet the preset threshold is larger than the preset number, determining that the video data is 3D video data of a second structure type;

and if the number of the third image and the fourth image which meet the preset threshold is not more than the preset number, determining that the video data is not the 3D video data or determining that the video data is the 3D video data with the first structure type, wherein the preset number is determined according to the number of the extracted image frames.

7. The apparatus as claimed in claim 1, wherein said determining whether the video data is 3D video data and a structure type of the video data when the video data is the 3D video data from the extracted image frame comprises:

according to the symmetry axis of the image frame in the vertical direction and the symmetry axis of the image frame in the horizontal direction, the image frame is cut into a first image, a second image, a third image and a fourth image;

respectively acquiring fingerprint data of the first image, the second image, the third image and the fourth image;

judging whether the similarity of the first image and the third image, the similarity of the second image and the fourth image, the similarity of the first image and the second image and/or the similarity of the third image and the fourth image meet a preset threshold or not according to the fingerprint data of the first image, the second image, the third image and the fourth image, and determining the number of groups of the first image, the third image, the second image, the fourth image, the first image, the second image and/or the third image and the fourth image with the similarity meeting the preset threshold;

if the number of groups of the first image and the second image or the number of groups of the third image and the fourth image which meet a preset threshold is larger than a preset number of groups, determining that the video data is 3D video data of a first structure type;

if the number of groups of the first image and the third image or the number of groups of the second image and the fourth image which meet a preset threshold is greater than a preset number of groups, determining that the video data is 3D video data of a second structure type;

and if the group number of the first image and the third image, the second image and the fourth image, the first image and the second image or the third image and the fourth image which meet a preset threshold value is not more than a preset group number, determining that the video data is not the 3D video data.

8. The display device according to any of claims 5-7, wherein the controller is configured to acquire fingerprint data of the image according to the following steps:

reducing the image to a specified size;

carrying out gray level processing on the reduced image to obtain a gray level image;

calculating a gray level average value of the gray level image;

and comparing the gray value of each pixel point in the gray image with the average gray value to obtain the fingerprint data of the image.

9. The display device according to any one of claims 5 to 7, wherein the controller is configured to determine whether the similarity of the two images satisfies a preset threshold value based on the fingerprint data of the two images according to the following steps:

correspondingly comparing each bit of data in the fingerprint data of the two images to determine the matching bit number of the fingerprint data of the two images;

and judging whether the matching digit of the fingerprint data of the two images meets a preset threshold value.

10. A video playback method, the method comprising:

receiving video data, and extracting image frames from the received video data;