CN113329262A

CN113329262A - Display equipment and control method for switching playing backup signal source

Info

Publication number: CN113329262A
Application number: CN202110594736.6A
Authority: CN
Inventors: 刘加山; 王建亮; 张凯帝
Original assignee: Hisense Visual Technology Co Ltd
Current assignee: Hisense Visual Technology Co Ltd
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2021-08-31

Abstract

The application relates to the technical field of display equipment, in particular to display equipment and a control method for switching a playing backup signal source, which can solve the problems of television playing display failure in the switching process due to untimely switching of television signal sources. The display device includes: a display for displaying a user interface; the signal channel is used for transmitting the video signal played on the user interface; a controller configured to: after the display is started, controlling a user interface to play a main video signal transmitted by a main signal channel; when the main video signal is lost or the strength of the main video signal is lower than a strength threshold value, controlling the user interface to play a slave video signal transmitted by a slave signal channel; and when the controller detects the main video signal of the main signal channel again in the process of playing the slave video signal, controlling the user interface to switch to play the main video signal.

Description

Display equipment and control method for switching playing backup signal source

Technical Field

The present application relates to the field of display device technologies, and in particular, to a display device and a control method for switching a playback backup signal source.

Background

The signal source refers to a signal channel for transmitting a video signal in a smart tv configuration, and may include, for example, a High Definition Multimedia Interface (HDMI), an analog or data high definition component input interface (component), a composite video input interface (CVBS), a USB input interface (USB), an RGB port, and the like.

In some implementations of switching a broadcast signal source, after a video signal transmitted by a current signal source is lost, a user generally needs to operate a home key and a direction key of a remote controller to control a television screen to display a signal source configuration user interface, then select a target signal source in the configuration interface, and switch the television target signal source only by operating a confirmation key and a return key of the remote controller.

However, in commercial applications such as outdoor advertisement large-screen televisions or subway televisions, a current signal source may have a problem that a current video signal cannot be transmitted due to various reasons, and an administrator needs to switch the signal source of the television after receiving a fault warning so that the television can be normally played to eliminate the fault influence.

Disclosure of Invention

In order to solve the problems that the switching of a television signal source is not timely and the television playing and displaying are failed in the switching process, the application provides display equipment and a control method for switching the playing backup signal source.

The embodiment of the application is realized as follows:

a first aspect of an embodiment of the present application provides a display device, including: a display for displaying a user interface; the signal channel is used for transmitting the video signal played on the user interface; a controller configured to: after the display is started, controlling a user interface to play a main video signal transmitted by a main signal channel; when the main video signal is lost or the strength of the main video signal is lower than a strength threshold value, controlling the user interface to play a slave video signal transmitted by a slave signal channel; and when the controller detects the main video signal of the main signal channel again in the process of playing the slave video signal, controlling the user interface to switch to play the main video signal.

A second aspect of the embodiments of the present application provides a control method for switching a playback backup signal source, where the method includes: after the display is started, playing a main video signal transmitted by a main signal channel; when the main video signal is lost or the strength of the main video signal is lower than a strength threshold value, playing a slave video signal transmitted by a slave signal channel; and when the main video signal of the main signal channel is detected again in the process of playing the slave video signal, switching to play the main video signal.

The beneficial effect of this application: by constructing a main signal channel, the default main video signal can be played when the television is started; further, by constructing a slave signal channel, the backup video signal can be automatically played in time after the main video signal is lost; further, the state of the main signal channel is continuously detected, so that the backup signal source can be timely restored to the main video signal channel; the transmission state of the corresponding video signal is judged by detecting the clock signal of the signal channel, so that the state detection of the transmission signal is realized when the physical cable of the physical channel is effectively connected, the video signal output of the television is always kept, the untimely switching of a television signal source is avoided, and a user interface displays a no-signal blue screen or a screen saver in the switching process.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

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;

FIG. 5 illustrates an icon control interface display of an application in display device 200, in accordance with some embodiments;

FIG. 6A is a schematic diagram illustrating a user interface of a display device according to an embodiment of the present application;

FIG. 6B is a schematic diagram illustrating a display device user interface according to another embodiment of the present application;

FIG. 7 is a schematic diagram of a television user interface according to an embodiment of the present application;

FIG. 8A is a schematic diagram of a user interface illustrating a television signal source configuration according to an embodiment of the present application;

FIG. 8B is a schematic diagram of a user interface showing a television signal source configuration according to another embodiment of the present application;

FIG. 9 is a timing diagram illustrating signal source switching of a display device according to an embodiment of the present application;

fig. 10 is a logic diagram illustrating a control method for switching a play backup signal source according to an embodiment of the present application.

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 an operation scenario between a display device and a control apparatus according to an embodiment. As shown in fig. 1, a user may operate the display apparatus 200 through the 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 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 input a user instruction through a key on a remote controller, voice input, control panel input, etc., to control the display apparatus 200.

In some embodiments, the smart device 300 (e.g., mobile terminal, tablet, computer, laptop, etc.) 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 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 command control of the user may be directly received by a module configured inside the display device 200 to obtain a voice command, or may be received by a voice control device 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.

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.

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 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 presenting a picture, and a driving component for driving an image display, a component for receiving an image signal from the controller output, performing display of video content, image content, and a menu manipulation interface, and a user manipulation UI interface.

In some embodiments, the display 260 may be 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, 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 external control apparatus 100 or the server 400 through the communicator 220.

In some embodiments, the user interface may be configured to receive control signals for controlling the apparatus 100 (e.g., an infrared remote control, etc.).

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 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, 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: icons, operation menus, user input instruction display graphics, and the like. 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 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 that can be displayed or played on the direct display device 200.

In some embodiments, the video processor 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 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 noise reduction, digital-to-analog conversion, and amplification processing to obtain an audio 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 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.

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. 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..

In some embodiments, the display device may directly enter the interface of the preset vod program after being activated, and the interface of the vod program may include at least a navigation bar 510 and a content display area located below the navigation bar 510, as shown in fig. 5, where the content displayed in the content display area may change according to the change of the selected control in the navigation bar. The programs in the application program layer can be integrated in the video-on-demand program and displayed through one control of the navigation bar, and can also be further displayed after the application control in the navigation bar is selected.

In some embodiments, the display device may directly enter a display interface of a signal source selected last time after being started, or a signal source selection interface, where the signal source may be a preset video-on-demand program, or may be at least one of an HDMI interface, a live tv interface, and the like, and after a user selects different signal sources, the display may display contents obtained from different signal sources.

The embodiment of the application can be applied to various types of display devices (including but not limited to smart televisions, liquid crystal televisions and the like). The following explains a control scheme and a user interface for switching and playing a backup signal source by using a smart television as an example, and a display device and a control method for switching and playing the backup signal source are explained.

FIG. 6A shows a schematic diagram of a user interface of a display device according to an embodiment of the present application.

The display device provided by the application comprises a display for displaying a user interface and a controller. In some embodiments, the application UI interface may include, for example, 4 television-installed applications, respectively news headlines, movie theatre on demand, Failover configuration, K songs, and so on. By moving the focus on the display screen using a controller such as a remote control, different applications, or other function buttons, may be selected.

In some embodiments, the user interface may also present interactive elements, which may include, for example, television home page controls, search controls, message button controls, mailbox controls, browser controls, favorites controls, signal bar controls, etc., and by moving focus on the display screen using a controller such as a remote control, different applications, function buttons may be selected.

To improve the convenience and the image of the UI of the television, in some embodiments, the controller of the display device in the embodiments of the present application controls the UI of the television in response to the manipulation of the interactive element. For example, a user clicks the Failover configuration icon through a controller such as a remote controller, and the signal source configuration interface may be activated, and the UI of the signal source configuration interface is displayed on the top of the global UI, so as to control the application component UI mapped by the interactive element to be enlarged or run and displayed in a full screen.

In some embodiments, the interactive element may also be operated by a sensor, which may be, but is not limited to, an acoustic input sensor, such as a display device configured microphone, which may detect voice commands including indications of the desired interactive element. For example, the user may identify the desired interactive element using "launch Failover configuration" or any other suitable identification, and may also describe the desired action to be performed in relation to the desired interactive element. The controller may recognize the voice command and submit data characterizing the interaction to the UI or its processing component or engine.

FIG. 6B is a schematic diagram of a display device user interface according to another embodiment of the present application.

In some embodiments, the user may control the focus of the display screen via a remote control, selecting the Failover configuration icon such that its icon is highlighted on the user interface of the television display screen; and then clicking the high-brightness icon to open the Failover configuration user interface of the icon mapping.

It should be noted that, in the embodiment of the present application, icons and characters of the UI interface are merely set forth as examples of the display device and the control method for switching the playback backup signal source, and the icons and the characters of the UI interface in the drawings may also be implemented as other contents, and the drawings of the present application are not limited specifically.

FIG. 7 is a schematic diagram of a television user interface according to an embodiment of the present application.

In some embodiments, the display device provided herein includes a signal channel that can transmit a video signal that is decoded for playback at a user interface, which may include, for example, a television, video, computer, component, HDMI, or other signal channel.

When a user uses the wired antenna to connect with a television, a television signal source can be selected; when a user uses equipment such as a television box and the like to connect a television and the connection mode of the box and the television is an AV line (three lines of yellow, white and red), a video signal source can be selected; when a user uses DVD, VCD and other equipment to connect a television through an AV cable, a video signal source can be selected; when a user uses a computer to connect with a television, the user can connect through an HDMI (high-definition multimedia interface) line or a VGA (video graphics array) line, and when the user connects through the VGA, the user needs to select a computer signal source; when a user uses a television and the box are connected through a chromatic aberration component line, a component signal source can be selected; when other high-definition equipment provided with the HDMI is connected with a television, the HDMI signal source needs to be selected.

In some embodiments, the smart tv is configured with 2-3 HDMI interfaces, each of which is labeled with a serial number such as: HDMI1, HDMI 2; the selected HDMI signal source is identical to the serial number of the actual HDMI interface. For example, when the smart television is connected with the equipment, an HDMI line is plugged into HDMI2 of the television, and when a signal source is selected, HDMI2 is also selected.

In some embodiments, if the current physical channel has no video signal, the tv may directly display the blue screen no-signal or automatically enable a no-signal screen saver, as shown in fig. 7.

However, in some industrial fields or commercial fields with strict requirements, a television display no-signal screen saver or a blue screen no-signal causes great influence, such as a monitor, an outdoor advertisement large screen, a subway television and the like. When no signal appears on a blue screen of a television, more audiences find faults, so that the service and the television are influenced.

Fig. 8A is a schematic user interface diagram illustrating a configuration of a television signal source according to an embodiment of the present application.

In some embodiments, the display device provided by the application can provide automatic switching control of signal channels, can monitor the states of the master signal source and the slave signal source in real time, and when the master signal source has no signal, the television is automatically switched to the slave signal source; when the main signal source recovers the signal, the television automatically switches back to the main signal source, so that the continuity of television playing can be ensured, wherein the main signal source and the slave signal source are expressed as a main signal channel and a slave signal channel in the following.

For example, configuring the main signal channel of a television as a DP, wherein the DP signal source is the signal source of the television main page, as shown in fig. 8A; the slave signal channel is configured as HDMI2 as shown in fig. 8B. After the television display is started, the controller controls the user interface to play the main video signal transmitted by the main signal channel, namely, if the video signal exists in the DP signal channel at the starting time, the television user interface displays a television homepage.

In some embodiments, if the master signal source has no signal, the controller controls the user interface to play a signal of a preset slave signal source, as shown in step 901 in fig. 9. When the main video signal of the television is lost, namely the controller cannot acquire and detect the video signal from the main signal channel, the controller controls the television user interface to play the slave video signal transmitted by the slave signal channel.

It should be noted that, if the strength of the master video signal of the master signal channel is lower than the strength threshold, the controller will also control the user interface to play the slave video signal transmitted by the slave signal channel. In the implementation, the absence of the main video signal in the main signal channel can be regarded as the signal strength infinitely close to 0.

In some embodiments, the television controller detects that the main video signal is missing, or that its intensity is below an intensity threshold, which may be accomplished by the following method.

Under the current signal channel of the television, the television controller may obtain Vsync information of the main signal channel itself through a "getSignalStatusSync" service, for example, to determine whether the transmitted video signal is stable.

If the transmitted video signal is stable enough, the controller does not do any processing; if the transmitted video signal is unstable or has no signal, the controller will continue to acquire the state of the slave signal channel; if the slave signal channel has slave video signal input and transmission, the controller switches the control playing source from the master signal channel to the slave signal channel.

It can be found that the on-off state of the video signal is judged by monitoring the clock signal of the physical signal channel, and the situation that the signal line is inserted but the video signal is not available can be detected, so that the physical connection state of the physical signal channel is not detected simply.

In some embodiments, the controller may determine that the main video signal is lost when the controller detects an interruption in the clock signal of the television main signal channel corresponding to the main video signal. When the clock signal intensity of the main signal channel corresponding to the main video signal is detected to be smaller than the preset clock threshold value, the controller judges that the intensity of the main video signal is lower than the intensity threshold value.

In some embodiments, after the main signal source recovers the signal, the television will switch to play the main video signal of the main signal source, as shown in step 902 of fig. 9.

After the main video signal of the television main signal channel is lost, the controller is switched to the slave signal channel to play the slave video signal, namely, the video signal of the HDMI2 signal channel is played; if the controller detects the main video signal from the main signal channel, i.e. the DP signal channel, again during the playback of the slave video signal in the HDMI2 signal channel, the controller will control the user interface to switch to play the main video signal in the DP signal channel. Through the switching of the controller between the main signal channel and the slave signal channel, the main video signal can be switched to the slave video signal in time after being lost, and the condition that no signal screen saver or a fault page is displayed on a display screen in the manual operation process is avoided.

In some embodiments, when the television plays the slave video signal, the controller continuously detects the signal states of the master signal channel and the slave signal channel of the display device regardless of whether the slave signal channel is normal or not; when the controller detects the main video signal of the main signal channel again, the controller switches the user interface from playing the slave video signal to playing the main video signal immediately. It can be found that the control scheme provided by the application can realize that the television is always in a state with signal output, and a blue screen no-signal user interface cannot be presented.

In some embodiments, when neither the primary nor the secondary source has a video signal, the tv user interface switches the display screen saver, as shown in step 903 of fig. 9.

During the process that the controller controls the user interface to play the slave video signal transmitted by the slave signal channel, if the slave video signal is also lost or the intensity of the slave video signal is lower than the intensity threshold value, the controller controls the user interface to display the no-signal screen saver. It should be noted that the premise of the user interface display screen saver is that the main signal channel does not have the main video signal at the current time. I.e., when neither the master video signal nor the slave video signal is present, or the signal strength is insufficient to support normal playback, the controller will control the user interface to display a screen saver.

In some embodiments, the controller of the tv in the screen saver state will continuously detect the state of the signal channel, and when the main signal source or the slave signal source recovers, the controller will control the user interface to switch from displaying the screen saver to playing the corresponding main video signal or the slave video signal, as shown in steps 904 to 905 in fig. 9.

In some embodiments, the controller cancels monitoring of the signal status of the master signal channel and the slave signal channel when the video signal played by the user interface comes from a signal channel other than the master signal channel and the slave signal channel.

For example, if the user configures the master signal channel as DP and the slave signal channel as HDMI2 in the Failover configuration of the tv, if the controller detects that the tv playing signal source at the current time is HDMI1, it may be considered that the user has already cut the channel out of the entire Failover system, and at this time, the user uses a signal source other than the master and slave signal channels, the controller does not acquire the signal states of the master signal channel DP and the slave signal channel HDMI2, and the controller will not control the user interface to play the video signal played by the channel regardless of whether the signal channel has a transmitted video signal.

For the user to actively switch the signal channel to the HDMI1, the user selection should be respected, and the interference user configuration cannot be automatically started. The controller does not implement the control technical scheme for switching the playing backup signal source provided by the embodiment of the application until the user switches the signal channel back to the main signal channel or the slave signal channel again.

In some embodiments, the controller may further configure the plurality of signal channels as slave signal channels, which may specifically include a first slave signal channel of high priority, and a second slave signal channel of low priority;

in the process of switching the main signal channel to the slave signal channel, the controller controls the user interface to preferentially play a first slave video signal transmitted by the first slave signal channel; and controlling the user interface to play the second slave video signal transmitted by the second slave signal channel if the first slave signal channel does not transmit the corresponding first slave video signal.

For example, the master signal channel is configured as DP, the first slave signal channel is configured as HDMI2, and the second slave signal channel is configured as HDMI 1; when the DP signal source does not have a video signal, the controller switches to play the HDMI2 signal source preferentially; when the HDMI2 signal source also loses the video signal, the controller switches to play the HDMI1 signal source. It should be noted that the display device provided in the present application may also extend the slave signal channel to 3 or more channels to implement seamless switching between master and slave video signals.

In some embodiments, a user may configure the primary and secondary signal channels of a television, i.e., signal sources, for example, via a Failover configuration interface provided by a user interface.

For example, the user can select a signal source backup setting menu through a remote controller, and the sub-options thereof can include on, off, and default off; when turned on, a master signal source and a slave signal source may be selected; in a channel supported by the whole machine, two signal sources are selected as a main signal source and a slave signal source.

In some embodiments, after the Failover configuration signal source is completed or the user is powered on again, the controller controls the user interface to implement the technical scheme for switching the playing backup signal source according to the embodiment of the present application.

After the television is started, the controller can create a Failover management thread, the management thread traverses the configured states of the master signal source and the slave signal source of the system, monitors the transmitted video signals in real time, and automatically switches the signal source played by the television when the conditions are met;

the controller firstly judges whether the main signal source is stable; when the main signal source is stable, the controller detects whether a current playing signal source of the user interface is the main signal source; if the television is currently playing the main signal source, the controller continues to monitor the states of the main signal source and the slave signal source; if the television is currently playing the slave signal source, controlling the user interface to switch and play the main video signal transmitted by the main signal source, and continuously monitoring the states of the main signal source and the slave signal source;

when the controller judges that the main signal source is unstable, namely the main signal source does not transmit video signals or the strength of the transmitted main video signals is not enough to normally play, the controller judges whether the slave signal source is stable; if the slave video signal transmitted by the slave signal source is stable, namely the signal intensity of the slave video signal reaches the playing condition, the controller controls the user interface to switch and play the slave video signal transmitted by the slave signal source, and continues to monitor the states of the master signal source and the slave signal source; if the slave video signal transmitted by the slave signal source is unstable, namely the signal intensity of the slave video signal cannot reach the normal playing condition, the controller controls the user interface to display the no-signal screen saver and continues to monitor the states of the master signal source and the slave signal source.

Based on the above technical solution for realizing the control of switching the playing backup signal source by the display device and the introduction of the related drawings, the present application also provides a control method for switching the playing backup signal source, the method includes: after the display is started, playing a main video signal transmitted by a main signal channel; when the main video signal is lost or the strength of the main video signal is lower than a strength threshold value, playing a slave video signal transmitted by a slave signal channel; and when the main video signal of the main signal channel is detected again in the process of playing the slave video signal, switching to play the main video signal. The method has been described in detail in the technical scheme for implementing switching and playing the backup signal source by the display device, and is not described herein again.

In some embodiments, in playing the slave video signal transmitted from the signal channel, the method further comprises: displaying a no-signal screensaver if the slave video signal is lost, or if its intensity is below an intensity threshold. The method has been described in detail in the technical scheme for implementing switching and playing the backup signal source by the display device, and is not described herein again.

In some embodiments, switching to play the main video signal when the main video signal is detected again specifically includes: continuously detecting the signal states of a main signal channel and a slave signal channel when the slave video signal is played; and when the main video signal of the main signal channel is detected again, switching from playing the slave video signal to playing the main video signal. The method has been described in detail in the technical scheme for implementing switching and playing the backup signal source by the display device, and is not described herein again.

In some embodiments, when the played video signal comes from a signal channel other than the master signal channel and the slave signal channel, the signal states of the master signal channel and the slave signal channel are not monitored. The method has been described in detail in the technical scheme for implementing switching and playing the backup signal source by the display device, and is not described herein again.

In some embodiments, detecting that the main video signal is lost or the intensity thereof is below the intensity threshold specifically includes: when detecting that a main signal channel is interrupted corresponding to a clock signal of a main video signal, judging that the main video signal is lost; when detecting that the intensity of the clock signal of the main signal channel corresponding to the main video signal is smaller than a preset clock threshold value, judging that the intensity of the main video signal is lower than the intensity threshold value. The method has been described in detail in the technical scheme for implementing switching and playing the backup signal source by the display device, and is not described herein again.

In some embodiments, playing the slave video signal transmitted by the slave signal channel specifically includes: when the slave signal channels comprise a first slave signal channel with high priority and a second slave signal channel with low priority, preferentially playing a first slave video signal transmitted by the first slave signal channel; and playing the second slave video signal transmitted by the second slave signal channel when the first slave signal channel does not transmit the corresponding first slave video signal. The method has been described in detail in the technical scheme for implementing switching and playing the backup signal source by the display device, and is not described herein again.

The method and the device have the advantages that the default main video signal can be played when the television is started by constructing the main signal channel; further, by constructing a slave signal channel, the backup video signal can be automatically played in time after the main video signal is lost; further, the state of the main signal channel is continuously detected, so that the backup signal source can be timely restored to the main video signal channel; the transmission state of the corresponding video signal is judged by detecting the clock signal of the signal channel, so that the state detection of the transmission signal is realized when the physical cable of the physical channel is effectively connected, the video signal output of the television is always kept, the untimely switching of a television signal source is avoided, and a user interface displays a no-signal blue screen or a screen saver in the switching process.

Moreover, those skilled in the art will appreciate that aspects of the present application may be illustrated and described in terms of several patentable species or situations, including any new and useful combination of processes, machines, manufacture, or materials, or any new and useful improvement thereon. Accordingly, various aspects of the present application may be embodied entirely in hardware, entirely in software (including firmware, resident software, micro-code, etc.) or in a combination of hardware and software. The above hardware or software may be referred to as "data block", "controller", "engine", "unit", "component", or "system". Furthermore, aspects of the present application may be represented as a computer product, including computer readable program code, embodied in one or more computer readable media.

The computer storage medium may comprise a propagated data signal with computer program code embodied therewith, for example, on baseband or as part of a carrier wave. The propagated signal may take any of a variety of forms, including electromagnetic, optical, etc., or any suitable combination. A computer storage medium may be any computer-readable medium that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code located on a computer storage medium may be propagated over any suitable medium, including radio, cable, fiber optic cable, RF, or the like, or any combination of the preceding.

Computer program code required for the operation of various portions of the present application may be written in any one or more programming languages, including an object oriented programming language such as Java, Scala, Smalltalk, Eiffel, JADE, Emerald, C + +, C #, VB.NET, Python, and the like, a conventional programming language such as C, Visual Basic, Fortran 2003, Perl, COBOL 2002, PHP, ABAP, a dynamic programming language such as Python, Ruby, and Groovy, or other programming languages, and the like. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the latter scenario, the remote computer may be connected to the user's computer through any network format, such as a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet), or in a cloud computing environment, or as a service, such as a software as a service (SaaS).

Additionally, the order in which elements and sequences of the processes described herein are processed, the use of alphanumeric characters, or the use of other designations, is not intended to limit the order of the processes and methods described herein, unless explicitly claimed. While various presently contemplated embodiments of the invention have been discussed in the foregoing disclosure by way of example, it is to be understood that such detail is solely for that purpose and that the appended claims are not limited to the disclosed embodiments, but, on the contrary, are intended to cover all modifications and equivalent arrangements that are within the spirit and scope of the embodiments herein. For example, although the system components described above may be implemented by hardware devices, they may also be implemented by software-only solutions, such as installing the described system on an existing server or mobile device.

Similarly, it should be noted that in the preceding description of embodiments of the application, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure aiding in the understanding of one or more of the embodiments. This method of disclosure, however, is not intended to require more features than are expressly recited in the claims. Indeed, the embodiments may be characterized as having less than all of the features of a single embodiment disclosed above.

The entire contents of each patent, patent application publication, and other material cited in this application, such as articles, books, specifications, publications, documents, and the like, are hereby incorporated by reference into this application. Except where the application is filed in a manner inconsistent or contrary to the present disclosure, and except where the claim is filed in its broadest scope (whether present or later appended to the application) as well. It is noted that the descriptions, definitions and/or use of terms in this application shall control if they are inconsistent or contrary to the statements and/or uses of the present application in the material attached to this application.

Claims

1. A display device, comprising:

a display for displaying a user interface;

the signal channel is used for transmitting the video signal played on the user interface;

a controller configured to:

after the display is started, controlling a user interface to play a main video signal transmitted by a main signal channel;

when the main video signal is lost or the strength of the main video signal is lower than a strength threshold value, controlling the user interface to play a slave video signal transmitted by a slave signal channel; and when the controller detects the main video signal of the main signal channel again in the process of playing the slave video signal, controlling the user interface to switch to play the main video signal.

2. The display device of claim 1, wherein in controlling the user interface to play the slave video signal transmitted from the signal channel, the controller is further configured to:

and controlling the user interface to display the no-signal screen saver if the slave video signal is lost or the intensity of the slave video signal is lower than the intensity threshold.

3. The display device as claimed in claim 1, wherein the controller controls the user interface to switch to play the main video signal when the controller detects the main video signal again, specifically comprising the controller:

when the slave video signal is played, continuously detecting the signal states of a main signal channel and a slave signal channel of the display equipment;

and when the controller detects the main video signal of the main signal channel again, the controller controls the user interface to switch from playing the slave video signal to playing the main video signal.

4. The display device of claim 1, wherein the controller is further configured to:

when the video signal played by the user interface comes from the signal channels except the main signal channel and the slave signal channel, the controller cancels the monitoring of the signal states of the main signal channel and the slave signal channel.

5. The display device of claim 1, wherein the controller to detect that the main video signal is missing or has an intensity below an intensity threshold specifically comprises the controller to:

when detecting that a main signal channel is interrupted corresponding to a clock signal of a main video signal, judging that the main video signal is lost;

when detecting that the intensity of the clock signal of the main signal channel corresponding to the main video signal is smaller than a preset clock threshold value, judging that the intensity of the main video signal is lower than the intensity threshold value.

6. The display device of claim 1, wherein the controller controls the user interface to play a slave video signal transmitted from the signal path, in particular comprising the controller:

when the slave signal channels comprise a first slave signal channel with high priority and a second slave signal channel with low priority, controlling the user interface to preferentially play a first slave video signal transmitted by the first slave signal channel;

and when the first slave signal channel does not transmit the corresponding first slave video signal, controlling the user interface to play the second slave video signal transmitted by the second slave signal channel.

7. A control method for switching and playing a backup signal source is characterized in that the method comprises the following steps:

after the display is started, playing a main video signal transmitted by a main signal channel;

when the main video signal is lost or the strength of the main video signal is lower than a strength threshold value, playing a slave video signal transmitted by a slave signal channel; and when the main video signal of the main signal channel is detected again in the process of playing the slave video signal, switching to play the main video signal.

8. The method for controlling switching of a source of a broadcast backup signal according to claim 7, wherein during broadcasting of the slave video signal transmitted from the signal channel, the method further comprises:

displaying a no-signal screensaver if the slave video signal is lost, or if its intensity is below an intensity threshold.

9. The method for controlling switching to play a backup signal source according to claim 7, wherein switching to play the main video signal when the main video signal is detected again comprises:

continuously detecting the signal states of a main signal channel and a slave signal channel when the slave video signal is played;

and when the main video signal of the main signal channel is detected again, switching from playing the slave video signal to playing the main video signal.

10. The method for controlling switching between sources of broadcast backup signals according to claim 7, wherein said method further comprises:

and when the played video signal comes from a signal channel except the main signal channel and the slave signal channel, canceling the monitoring of the signal states of the main signal channel and the slave signal channel.

11. The method as claimed in claim 7, wherein the detecting that the main video signal is lost or the strength thereof is lower than the strength threshold comprises:

12. The method as claimed in claim 7, wherein the step of playing the slave video signal transmitted from the signal channel comprises:

when the slave signal channels comprise a first slave signal channel with high priority and a second slave signal channel with low priority, preferentially playing a first slave video signal transmitted by the first slave signal channel;

and playing the second slave video signal transmitted by the second slave signal channel when the first slave signal channel does not transmit the corresponding first slave video signal.