CN113938729A - Screen correction method of display device and display device - Google Patents
Screen correction method of display device and display device Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
- H04N21/42204—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
Abstract
The embodiment provides a screen correction method of a display device and the display device, wherein the method comprises the following steps: after the screen rises to the top, the state of the screen is monitored in real time by using the monitoring assembly, and whether the screen is in a horizontal state or not is judged according to the state information of the screen. And if the screen is determined to be in a non-horizontal state, controlling the driving component to drive the lowest side of the screen to continuously rise, and not driving the highest side of the screen to continuously rise at the same time until the screen returns to the horizontal state. According to the embodiment of the application, the screen level can be guaranteed after the screen rises to the top, so that the watching experience of a user is improved.
Description
Technical Field
The present application relates to the field of display device technologies, and in particular, to a screen correction method for a display device and a display device.
Background
The rolling screen laser television adopts the curtain as a screen to display images, and a rollable driving assembly is designed on the side edge of the screen, so that the television can be unfolded from bottom to top. The rolling screen laser television places the screen in the bottom space, and when the user needs to watch the television, the driving assembly hidden in the box starts to work, and the rolling screen is slowly pushed out.
The screen of the rolling screen laser television is lifted and lowered by a driving component. In general, ideally, when the driving assembly drives the screen to rise to the top, the screen is in a horizontal state.
However, during the driving of the screen by the driving component, the two sides of the screen may not be horizontal. Taking the example that the driving assembly includes two sets of drivers, the two sets of drivers respectively drive the left and right sides of the screen to move. Usually, the two sets of drivers are set to have the same parameters, and the moving speeds of the two sides of the screen are the same, so that the screen is kept horizontal when being lifted to the top. However, due to the influence of mechanical characteristics and mechanical aging of the driving assembly, there may be a situation that in the screen moving process, two sets of driver parameters are different, and the moving speeds of two sides of the screen are inconsistent, so that when the screen rises to the top end, the screen is not horizontal, resulting in poor viewing experience of a user. Therefore, a television capable of ensuring a horizontal screen when the screen is moved to the top is desired.
Disclosure of Invention
The application provides a screen correction method of a display device and the display device, which are used for solving the problem that the user has poor viewing experience due to the fact that when a screen moves to the top end, the screen is not horizontal due to the influence of mechanical characteristics and mechanical aging of a driving assembly of the existing display device.
In a first aspect, the present embodiment provides a display device, including:
a screen configured to be rollably lifted;
a driving assembly configured to drive the screen to be unfolded or curled;
the monitoring component is configured to monitor the state of the screen when the screen moves to the top end, and feed back the state information of the screen to the controller;
a controller configured to:
and when the screen is determined to be in a non-horizontal state according to the state information, controlling the driving component to drive the lowest side of the screen to continuously rise, and not driving the highest side of the screen to continuously rise at the same time until the screen returns to the horizontal state.
In a second aspect, the present embodiment provides a method for correcting a screen of a display device, where the method is applied when the screen moves to the top, and includes:
when the screen is determined to be in a non-horizontal state according to the state information, the driving component is controlled to drive the lowest side of the screen to continuously rise, and meanwhile, the highest side of the screen is not driven to continuously rise until the screen returns to the horizontal state, wherein the screen is configured to be capable of rolling up and down, the driving component is configured to drive the screen to be unfolded or rolled, and the state information is fed back to the controller after the monitoring component monitors the state of the screen.
According to the display device and the screen correction method of the display device, after the screen rises to the top end, the state of the screen is monitored in real time by the monitoring assembly, and whether the screen is in a horizontal state or not is judged according to the state information of the screen. And if the screen is determined to be in a non-horizontal state, controlling the driving component to drive the lowest side of the screen to continuously rise, and not driving the highest side of the screen to continuously rise at the same time until the screen returns to the horizontal state. According to the embodiment of the application, the screen level can be guaranteed after the screen rises to the top, so that the watching experience of a user is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
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 overall appearance schematic of a display device 200 according to some embodiments;
FIG. 6 illustrates a schematic front view of a display device 200 according to some embodiments;
FIG. 7 illustrates a right-side schematic view of a display device 200 according to some embodiments;
FIG. 8 shows a schematic right-view of yet another display device 200 in accordance with some embodiments;
FIG. 9 illustrates a schematic front view of yet another display device 200 in accordance with some embodiments;
FIG. 10 illustrates a graph showing a lifting curve of a screen in display device 200, according to some embodiments;
FIG. 11 illustrates an interactive signaling diagram of components in display device 200 in accordance with some embodiments;
FIG. 12 illustrates a screen correction method flow diagram for a display device according to some embodiments;
FIG. 13 illustrates a flow diagram of a method for screen correction for a further display device according to some embodiments;
FIG. 14 illustrates a flow chart of a method for screen correction for a display device according to some embodiments.
Detailed Description
To make the purpose and embodiments of the present application clearer, the following will clearly and completely describe the exemplary embodiments of the present application with reference to the attached drawings in the exemplary embodiments of the present application, and it is obvious that the described exemplary embodiments are only a part of the embodiments of the present application, and not all of the embodiments.
It should be noted that the brief descriptions of the terms in the present application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of the present application. These terms should be understood in their ordinary and customary meaning unless otherwise indicated.
The terms "first," "second," "third," and the like in the description and claims of this application and in the above-described drawings are used for distinguishing between similar or analogous objects or entities and not necessarily for describing a particular sequential or chronological order, unless otherwise indicated. It is to be understood that the terms so used are interchangeable under appropriate circumstances.
The terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a product or apparatus that comprises a list of elements is not necessarily limited to all elements expressly listed, but may include other elements not expressly listed or inherent to such product or apparatus.
The term "module" refers to any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic, or combination of hardware or/and software code that is capable of performing the functionality associated with that element.
Fig. 1 is a schematic diagram of a usage scenario of a display device according to an embodiment. As shown in fig. 1, the display apparatus 200 is also in data communication with a server 400, and a user can operate the display apparatus 200 through the smart device 300 or the control device 100.
In some embodiments, the control apparatus 100 may be a remote controller, and the communication between the remote controller and the display device includes at least one of an infrared protocol communication or a bluetooth protocol communication, and other short-distance communication methods, and controls the display device 200 in a wireless or wired manner. The user may control the display apparatus 200 by inputting a user instruction through at least one of a key on a remote controller, a voice input, a control panel input, and the like.
In some embodiments, the smart device 300 may include any of a mobile terminal 300A, a tablet, a computer, a laptop, an AR/VR device, and the like.
In some embodiments, the smart device 300 may also be used to control the display device 200. For example, the display device 200 is controlled using an application program running on the smart device.
In some embodiments, the smart device 300 and the display device may also be used for communication of data.
In some embodiments, the display device 200 may also be controlled in a manner other than the control apparatus 100 and the smart device 300, for example, the voice instruction control of the user may be directly received by a module configured inside the display device 200 to obtain a voice instruction, or may be received by a voice control apparatus provided outside the display device 200.
In some embodiments, the display device 200 is also in data communication with a server 400. The display device 200 may be allowed to be communicatively connected through a Local Area Network (LAN), a Wireless Local Area Network (WLAN), and other networks. The server 400 may provide various contents and interactions to the display apparatus 200. The server 400 may be a cluster or a plurality of clusters, and may include one or more types of servers.
In some embodiments, software steps executed by one step execution agent may be migrated on demand to another step execution agent in data communication therewith for execution. Illustratively, software steps performed by the server may be migrated to be performed on a display device in data communication therewith, and vice versa, as desired.
Fig. 2 exemplarily shows a block diagram of a configuration of the control apparatus 100 according to an exemplary embodiment. As shown in fig. 2, the control device 100 includes a controller 110, a communication interface 130, a user input/output interface 140, a memory, and a power supply. The control apparatus 100 may receive an input operation instruction from a user and convert the operation instruction into an instruction recognizable and responsive by the display device 200, serving as an interaction intermediary between the user and the display device 200.
In some embodiments, the communication interface 130 is used for external communication, and includes at least one of a WIFI chip, a bluetooth module, NFC, or an alternative module.
In some embodiments, the user input/output interface 140 includes at least one of a microphone, a touchpad, a sensor, a key, or an alternative module.
Fig. 3 shows a hardware configuration block diagram of the display apparatus 200 according to an exemplary embodiment.
In some embodiments, the display apparatus 200 includes at least one of a tuner demodulator 210, a communicator 220, a detector 230, an external device interface 240, a controller 250, a display 260, an audio output interface 270, a memory, a power supply, a user interface.
In some embodiments the controller comprises a central processor, a video processor, an audio processor, a graphics processor, a RAM, a ROM, a first interface to an nth interface for input/output.
In some embodiments, the display 260 includes a display screen component for displaying pictures, and a driving component for driving image display, a component for receiving image signals from the controller output, displaying video content, image content, and menu manipulation interface, and a user manipulation UI interface, etc.
In some embodiments, the display 260 may be at least one of a liquid crystal display, an OLED display, and a projection display, and may also be a projection device and a projection screen.
In some embodiments, the tuner demodulator 210 receives broadcast television signals via wired or wireless reception, and demodulates audio/video signals, such as EPG data signals, from a plurality of wireless or wired broadcast television signals.
In some embodiments, communicator 220 is a component for communicating with external devices or servers according to various communication protocol types. For example: the communicator may include at least one of a Wifi module, a bluetooth module, a wired ethernet module, and other network communication protocol chips or near field communication protocol chips, and an infrared receiver. The display apparatus 200 may establish transmission and reception of control signals and data signals with the control device 100 or the server 400 through the communicator 220.
In some embodiments, the detector 230 is used to collect signals of the external environment or interaction with the outside. For example, detector 230 includes a light receiver, a sensor for collecting ambient light intensity; alternatively, the detector 230 includes an image collector, such as a camera, which may be used to collect external environment scenes, attributes of the user, or user interaction gestures, or the detector 230 includes a sound collector, such as a microphone, which is used to receive external sounds.
In some embodiments, the external device interface 240 may include, but is not limited to, the following: high Definition Multimedia Interface (HDMI), analog or data high definition component input interface (component), composite video input interface (CVBS), USB input interface (USB), RGB port, and the like. The interface may be a composite input/output interface formed by the plurality of interfaces.
In some embodiments, the controller 250 and the modem 210 may be located in different separate devices, that is, the modem 210 may also be located in an external device of the main device where the controller 250 is located, such as an external set-top box.
In some embodiments, the controller 250 controls the operation of the display device and responds to user operations through various software control programs stored in memory. The controller 250 controls the overall operation of the display apparatus 200. For example: in response to receiving a user command for selecting a UI object to be displayed on the display 260, the controller 250 may perform an operation related to the object selected by the user command.
In some embodiments, the object may be any one of selectable objects, such as a hyperlink, an icon, or other actionable control. The operations related to the selected object are: displaying an operation connected to a hyperlink page, document, image, or the like, or performing an operation of a program corresponding to the icon.
In some embodiments the controller comprises at least one of a Central Processing Unit (CPU), a video processor, an audio processor, a Graphics Processing Unit (GPU), a RAM Random Access Memory (RAM), a ROM (Read-Only Memory), a first to nth interface for input/output, a communication Bus (Bus), and the like.
A CPU processor. For executing operating system and application program instructions stored in the memory, and executing various application programs, data and contents according to various interactive instructions receiving external input, so as to finally display and play various audio-video contents. The CPU processor may include a plurality of processors. E.g. comprising a main processor and one or more sub-processors.
In some embodiments, a graphics processor for generating various graphics objects, such as: at least one of an icon, an operation menu, and a user input instruction display figure. The graphic processor comprises an arithmetic unit, which performs operation by receiving various interactive instructions input by a user and displays various objects according to display attributes; the system also comprises a renderer for rendering various objects obtained based on the arithmetic unit, wherein the rendered objects are used for being displayed on a display.
In some embodiments, the video processor is configured to receive an external video signal, and perform at least one of video processing such as decompression, decoding, scaling, noise reduction, frame rate conversion, resolution conversion, and image synthesis according to a standard codec protocol of the input signal, so as to obtain a signal displayed or played on the direct display device 200.
In some embodiments, the video processor includes at least one of a demultiplexing module, a video decoding module, an image composition module, a frame rate conversion module, a display formatting module, and the like. The demultiplexing module is used for demultiplexing the input audio and video data stream. And the video decoding module is used for processing the video signal after demultiplexing, including decoding, scaling and the like. And the image synthesis module is used for carrying out superposition mixing processing on the GUI signal input by the user or generated by the user and the video image after the zooming processing by the graphic generator so as to generate an image signal for display. And the frame rate conversion module is used for converting the frame rate of the input video. And the display formatting module is used for converting the received video output signal after the frame rate conversion, and changing the signal to be in accordance with the signal of the display format, such as an output RGB data signal.
In some embodiments, the audio processor is configured to receive an external audio signal, decompress and decode the received audio signal according to a standard codec protocol of the input signal, and perform at least one of noise reduction, digital-to-analog conversion, and amplification processing to obtain a sound signal that can be played in the speaker.
In some embodiments, a user may enter user commands on a Graphical User Interface (GUI) displayed on display 260, and the user input interface receives the user input commands through the Graphical User Interface (GUI). Alternatively, the user may input the user command by inputting a specific sound or gesture, and the user input interface receives the user input command by recognizing the sound or gesture through the sensor.
In some embodiments, a "user interface" is a media interface for interaction and information exchange between an application or operating system and a user that enables conversion between an internal form of information and a form that is acceptable to the user. A commonly used presentation form of the User Interface is a Graphical User Interface (GUI), which refers to a User Interface related to computer operations and displayed in a graphical manner. It may be an interface element such as an icon, a window, a control, etc. displayed in the display screen of the electronic device, where the control may include at least one of an icon, a button, a menu, a tab, a text box, a dialog box, a status bar, a navigation bar, a Widget, etc. visual interface elements.
In some embodiments, user interface 280 is an interface that may be used to receive control inputs (e.g., physical buttons on the body of the display device, or the like).
In some embodiments, a system of a display device may include a Kernel (Kernel), a command parser (shell), a file system, and an application program. The kernel, shell, and file system together make up the basic operating system structure that allows users to manage files, run programs, and use the system. After power-on, the kernel is started, kernel space is activated, hardware is abstracted, hardware parameters are initialized, and virtual memory, a scheduler, signals and interprocess communication (IPC) are operated and maintained. And after the kernel is started, loading the Shell and the user application program. The application program is compiled into machine code after being started, and a process is formed.
Referring to fig. 4, in some embodiments, the system is divided into four layers, which are, from top to bottom, an Application (Applications) layer (referred to as an "Application layer"), an Application Framework (Application Framework) layer (referred to as a "Framework layer"), an Android runtime (Android runtime) layer and a system library layer (referred to as a "system runtime library layer"), and a kernel layer.
In some embodiments, at least one application program runs in the application program layer, and the application programs may be windows (windows) programs carried by an operating system, system setting programs, clock programs or the like; or an application developed by a third party developer. In particular implementations, the application packages in the application layer are not limited to the above examples.
The framework layer provides an Application Programming Interface (API) and a programming framework for the application program of the application layer. The application framework layer includes a number of predefined functions. The application framework layer acts as a processing center that decides to let the applications in the application layer act. The application program can access the resources in the system and obtain the services of the system in execution through the API interface.
As shown in fig. 4, in the embodiment of the present application, the application framework layer includes a manager (Managers), a Content Provider (Content Provider), and the like, where the manager includes at least one of the following modules: an Activity Manager (Activity Manager) is used for interacting with all activities running in the system; the Location Manager (Location Manager) is used for providing the system service or application with the access of the system Location service; a Package Manager (Package Manager) for retrieving various information related to an application Package currently installed on the device; a Notification Manager (Notification Manager) for controlling display and clearing of Notification messages; a Window Manager (Window Manager) is used to manage the icons, windows, toolbars, wallpapers, and desktop components on a user interface.
In some embodiments, the activity manager is used to manage the lifecycle of the various applications as well as general navigational fallback functions, such as controlling exit, opening, fallback, etc. of the applications. The window manager is used for managing all window programs, such as obtaining the size of a display screen, judging whether a status bar exists, locking the screen, intercepting the screen, controlling the change of the display window (for example, reducing the display window, displaying a shake, displaying a distortion deformation, and the like), and the like.
In some embodiments, the system runtime layer provides support for the upper layer, i.e., the framework layer, and when the framework layer is used, the android operating system runs the C/C + + library included in the system runtime layer to implement the functions to be implemented by the framework layer.
In some embodiments, the kernel layer is a layer between hardware and software. As shown in fig. 4, the core layer includes at least one of the following drivers: audio drive, display driver, bluetooth drive, camera drive, WIFI drive, USB drive, HDMI drive, sensor drive (like fingerprint sensor, temperature sensor, pressure sensor etc.) and power drive etc..
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 rolling screen laser television adopts the curtain as a screen to display images, and a rollable driving assembly is designed on the side edge of the screen, so that the television can be unfolded from bottom to top. The rolling screen laser television places the screen in the bottom space, and when the user needs to watch the television, the driving assembly hidden in the box starts to work, and the rolling screen is slowly pushed out.
The screen of the rolling screen laser television is lifted and lowered by a driving component. In general, ideally, when the driving assembly drives the screen to rise to the top, the screen is in a horizontal state.
However, during the driving of the screen by the driving component, the two sides of the screen may not be horizontal. Taking the example that the driving assembly includes two sets of drivers, the two sets of drivers respectively drive the left and right sides of the screen to move. Usually, the two sets of drivers are set to have the same parameters, and the moving speeds of the two sides of the screen are the same, so that the screen is kept horizontal when being lifted to the top. However, due to the influence of mechanical characteristics and mechanical aging of the driving assembly, there may be a situation that in the screen moving process, two sets of driver parameters are different, and the moving speeds of two sides of the screen are inconsistent, so that when the screen rises to the top end, the screen is not horizontal, resulting in poor viewing experience of a user. Therefore, a television capable of ensuring a horizontal screen when the screen is moved to the top is desired.
In order to solve the above problems, the present application provides a display device, the structure of the display device can refer to fig. 5 and 6, and the interaction flow of each component of the display device can refer to fig. 11.
As can be seen from fig. 5 and 6, on the basis that the above-described embodiments show the display device, the display device further includes: a screen 275, a drive assembly 276, and a monitor assembly 277. In the embodiment of the present application, the display device may be a laser television or an OLED television, and the present application is not limited thereto. If the display device is a laser television, the display device also includes a projection assembly 278, and if the display device is an OLED television, the display device does not include the projection assembly 278.
The screen in this embodiment can be driven by the driving assembly to complete rolling or extending actions. Accordingly, the screen can be in three states: the first is that the screen needs to be rolled up in a non-playing scene to reduce the occupied space of the display device. At this time, the screen is in a rolling state, which can be specifically referred to in fig. 7. The second method needs to stretch the screen in the playing scene, so that the stretched screen can bear the media resources projected by the projection component. In particular, reference may be made to fig. 8. The third is that the screen is in a transition state (not shown) between the rolled state and the extended state during the upward movement or the downward movement of the screen.
And the driving component is connected with the screen and is configured to drive the screen to move, and the movement comprises upward movement or downward movement. And the driving component can drive the screen to be rolled or extended based on the control of the controller.
In some possible embodiments, the drive assembly may be a retractable crawler assembly or may be a motor. Can respectively set up a motor in both ends about the screen, also can set up a spool elevator motor in the interlude of screen, can also respectively set up a motor in both ends about the lift screen, simultaneously, set up a spool elevator motor in the interlude of lift screen.
The monitoring component, in some feasible embodiments, may be an image collector, and accordingly, the monitored state information of the screen may be image information. Specifically, the monitoring component may be a camera, and the state information of the corresponding monitored screen may be obtained by taking a picture of the screen. The number of the cameras 279 may be one or more, wherein the camera area of at least one camera is a screen lifting area, and the camera is used for taking pictures of a screen and a display image in the lifting process. When the quantity of camera was 2, two cameras were located the both sides of projection subassembly respectively. In some embodiments, the camera can rotate on a horizontal plane, and when a screen needs to be shot and an image photo needs to be displayed, the shooting lens is rotated to the direction of the screen; when the user picture needs to be taken, the shooting lens is rotated to the user.
The monitoring component sends the picture of the screen to the controller, and the controller calculates the position of the changed image in the picture according to the information of the picture and the reference value of the camera. The controller calculates the height of the lowest side and the height of the highest side of the screen according to the information of the picture of the screen and the reference value of the camera.
The monitoring component, in some feasible embodiments, may be an angle monitor, and accordingly, the monitored state information of the screen is calculated by monitoring the real-time rotation angle of the driving component. Specifically, a correspondence list of the rotation angle and the screen movement height is stored in the controller in advance. Each rotation angle corresponds to a moving height, and when the controller receives the angle information, the moving height corresponding to the angle information can be called from the list, namely the lifting height of the screen. And respectively acquiring the real-time rotation angles of the two groups of driving assemblies monitored by the two groups of monitors, and then acquiring the lowest side height and the highest side height of the screen.
The laser display device screen has a set of default ascending curve parameters when the laser display device screen leaves the factory. However, because of the influence of the inherent characteristics of the mechanical equipment, the temperature and humidity of north and south, the temperature and humidity of winter and summer, and the mechanical aging on the machinery, the mechanical lifting is lossy, and in a long process or in different environments, the performance of the same machinery may be different, even the performance of two pieces of mechanical equipment of the same specification is different. In order to accommodate these differences, software is required to adaptively adjust the gain parameters according to the environment, so as to ensure the consistency of the rising curves and the consistency of the rising services. Meanwhile, the total time of the machine is the same no matter where the machine is, and the total time of the machine is the same no matter which season, so that a more stable software and hardware structure is provided for a user.
In order to solve the above problems, the main technical means is to prepare a set of ascending curve database. As shown in fig. 10, the ascending curve (not shown) of the screen is divided into a reset phase, an acceleration phase, a uniform velocity phase and a deceleration phase. The reset phase is a process that the screen rises from the absolute zero point of the screen to the reference zero point, and the rising speed of the screen in the reset phase is an acceleration process. The acceleration phase is a process that the screen rises from a reference zero point, and the rising speed rises from a lower value to a higher value. And when the rising speed of the screen is increased to a preset constant speed, entering a uniform speed stage. And the screen continuously rises at the preset uniform speed and keeps rising at a uniform speed. When the height reaches the next highest point (the starting position of the deceleration stage), the ascending speed of the screen starts to be reduced, and the ascending process of the screen enters the deceleration stage until the screen ascends to the highest point. The embodiment of the application relates to a horizontal correction process of the screen after the screen rises to the highest point (top end).
As shown in fig. 6, when the screen rises to the top and the first side height and the second side height of the screen are consistent, the screen is in a horizontal state. As shown in fig. 9, when the screen rises to the top, the height of the first side of the screen is not consistent with the height of the second side of the screen, and the screen is in a non-horizontal state.
In some embodiments, the specific process of determining whether the screen is in the horizontal state is: and calculating the heights of the two sides according to the state information of the screen fed back by the monitoring component. And if the absolute value of the height difference between the two sides is less than or equal to the difference threshold value, determining that the screen is in a horizontal state. And if the absolute value of the height difference between the two sides is larger than the difference threshold value, determining that the screen is in a non-horizontal state.
In some embodiments, the specific step of determining that the screen has moved to the top is: when the current rise time or equals the rise time threshold, it is determined that the screen has moved to the top. Specifically, it may be: and timing the current rise time of the screen through a timer, and determining that the screen rises to the top if the current rise time is greater than or equal to a rise time threshold (generally equal to the rise time threshold). The rising time threshold is pre-stored in the controller to measure and calculate time. The screen may be raised from the absolute zero point of the screen to the top after the screen raising speed is determined to be a fixed value, and the average value may be calculated by a counter.
The interaction flow between the components of the display device is illustrated in fig. 11. The controller is configured to perform: after the screen moves to the top end, when the screen is determined to be in a non-horizontal state according to the state information of the screen monitored by the monitoring assembly, the driving assembly is controlled to drive the lowest side of the screen to continuously rise, and meanwhile, the highest side of the screen is not driven to continuously rise until the screen returns to the horizontal state.
According to the feasible embodiment, the monitoring component can be an image collector, and correspondingly, the state information of the screen monitored by the monitoring component is specifically the image information of the screen. Here, the monitoring subassembly can set up to two sets of image collector, and each image collector of group all gathers many pictures of screen per second to promote the degree of accuracy of gathering the image. The monitoring component sends the image information of the screen to the controller, and the controller analyzes the acquired image information of the screen according to an image algorithm to obtain the height of the lowest side and the height of the highest side of the screen. The image algorithm is specifically adopted, and the embodiment of the present application is not limited.
The driving assemblies in the embodiments of the present application may be a group or multiple groups. The embodiment of the application takes two sets of driving assemblies as an example, and describes a specific process for enabling a screen to restore to a horizontal state. The driving assembly in the embodiment of the present application may include a motor, and the controller in the embodiment of the present application directly controls the rotation of the motor, that is, controls the angular velocity of the motor. The motor converts its angular velocity into the linear velocity of the screen. A specific conversion formula is v ═ r ω, where v is the linear velocity of the screen, r is the radius of the rotating shaft, and ω is the angular velocity of the motor rotation. The screen in this application embodiment adopts curtain thickness less, ignores the change volume of the pivot radius size of screen in the rise or the decline in-process.
Based on the above embodiment, if the screen rises to the top, the screen is in a non-horizontal state. The moving time (during which the moving process of the lowest side is still constant) is calculated based on the absolute value of the height difference between the lowest side and the highest side and the current moving speed of the lowest side, i.e., the time it takes for the lowest side to move the absolute value of the height difference at the current moving speed.
And the driving component drives the lowest side to continuously rise at the current moving speed until the screen recovers to the horizontal state, namely the time for the lowest side to continuously rise reaches the moving time, and the screen recovers to the horizontal state.
In some embodiments, if the screen is raised to the top, the screen is not in a horizontal state. The drive component of the lowest side is controlled to drive the lowest side to continue rising, and simultaneously the drive component of the highest side is closed, namely the highest side is not driven to continue rising any more. And in the process of driving the lowest side to continuously rise, continuously receiving the state information of the screen fed back by the monitoring component, and continuously determining whether the screen recovers the horizontal state according to the state information. And if the screen is determined to be still in a non-horizontal state, continuously controlling the drive component at the lowest side to drive the lowest side to continuously rise. Until the screen is determined to be restored to the horizontal state according to the fed back state information.
An embodiment of the present application provides a method for correcting a screen of a display device, where the method is applied to a flowchart of a method for correcting a screen of a display device shown in fig. 12 when the screen moves to a top end, and the method includes the following steps:
step one, when the screen is determined to move to the top end, the monitoring assembly monitors the state of the screen and feeds back the state information of the screen to the controller.
And step two, the controller determines whether the screen is in a horizontal state according to the state information of the screen. And if the screen is in a non-horizontal state, controlling the driving component to drive the lowest side of the screen to continuously rise, and not driving the highest side of the screen to continuously rise at the same time until the screen returns to the horizontal state.
And if the screen is in a horizontal state, the screen is not continuously driven to rise. After determining that the screen is in the horizontal state, the state of the screen can be periodically monitored by the monitoring component during the use process of the display device, namely, the first step and the second step are periodically repeated. Therefore, the condition that the screen is not horizontal due to factors such as fatigue damage of components for supporting the screen in the using process can be avoided.
Based on the above method embodiment, the present application provides still another screen correction method for a display device, where the method is also applied to a flowchart of the screen correction method for a display device shown in fig. 13 when a screen moves to the top, and the method includes the following steps:
step one, when the screen is determined to move to the top end, the monitoring assembly monitors the state of the screen and feeds back the state information of the screen to the controller.
And step two, the controller calculates the height of the lowest side and the height of the highest side of the screen according to the image information of the screen, and simultaneously calculates the absolute value of the height difference between the lowest side and the highest side. The controller also prestores a difference threshold for the height difference. And if the absolute value of the height difference between the lowest side and the highest side is less than or equal to the difference threshold, determining that the screen is in a horizontal state, and ending the monitoring and correcting process without continuously driving the screen to rise.
And if the absolute value of the height difference between the lowest side and the highest side is greater than the difference threshold, determining that the screen is in a non-horizontal state, continuously driving the screen to ascend, and performing the step three.
And step three, calculating the moving time according to the absolute value of the height difference between the height of the lowest side and the height of the highest side of the screen and the current moving speed of the lowest side, namely the time required by the lowest side to move to the same height as the highest side.
And step four, the controller controls the driving component at the lowest side to drive the lowest side to rise at the current moving speed, and the driving component at the highest side is in a closed state at the moment. If the time that the driving component drives the lowest side to rise at the current moving speed does not reach the calculated moving time, the driving component continues to drive the lowest side to rise at the current moving speed.
And controlling the driving component at the lowest side to be closed when the time for which the driving component drives the lowest side to rise at the current moving speed reaches the calculated moving time. Thereby restoring the screen to a horizontal state.
Based on the above method embodiments, the present application provides still another screen correction method for a display device, where the method is also applied to a flowchart of the screen correction method for a display device shown in fig. 14 when a screen moves to the top, and the method includes the following steps:
step one, when the screen is determined to move to the top end, the monitoring assembly monitors the state of the screen and feeds back the state information of the screen to the controller.
And step two, the controller determines whether the screen is in a horizontal state according to the state information of the screen. And if the screen is in a non-horizontal state, performing the third step.
And step three, controlling the driving assembly at the lowest side to drive the lowest side to continuously rise, and simultaneously controlling the driving assembly at the highest side to close, namely the highest side does not continuously rise any more. And in the process of controlling the driving component at the lowest side to drive the lowest side to continuously rise, the monitoring component periodically feeds back the state information of the screen to the controller. The controller judges whether the screen reaches a horizontal state according to the state information of the screen.
If the screen is determined not to be in the horizontal state during the process that the driving assembly at the lowest side drives the lowest side to continuously rise, the step three is continued.
And if the screen is determined to be in a horizontal state in the process that the driving assembly at the lowest side drives the lowest side to continuously rise, performing the step four.
And step four, controlling the driving component at the lowest side to be closed, namely stopping driving the lowest side to continuously rise. Thereby restoring the screen to a horizontal state.
The same or similar contents in the embodiments of the present application may be referred to each other, and the related embodiments are not described in detail.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
The foregoing description, for purposes of explanation, has been presented in conjunction with specific embodiments. However, the illustrative discussions above are not intended to be exhaustive or to limit the embodiments to the precise forms disclosed above. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles and the practical application, to thereby enable others skilled in the art to best utilize the embodiments and various embodiments with various modifications as are suited to the particular use contemplated.
Claims (10)
1. A display device, comprising:
a screen configured to be rollably lifted;
a driving assembly configured to drive the screen to be unfolded or curled;
the monitoring component is configured to monitor the state of the screen when the screen moves to the top end, and feed back the state information of the screen to the controller;
a controller configured to:
and when the screen is determined to be in a non-horizontal state according to the state information, controlling the driving component to drive the lowest side of the screen to continuously rise, and not driving the highest side of the screen to continuously rise at the same time until the screen returns to the horizontal state.
2. The display device according to claim 1, wherein the specific step of determining that the screen moves to the top is: and when the current rise time is greater than or equal to a rise time threshold, determining that the screen moves to the top, wherein the rise time threshold is the time required for the screen prestored in the controller to rise from the absolute zero point of the screen to the top.
3. The display device according to claim 1, wherein it is determined whether the screen is in a horizontal state according to the state information, specifically:
calculating the height of the lowest side and the height of the highest side of the screen according to the state information;
determining that the screen is in a horizontal state when an absolute value of a height difference between the lowermost side and the uppermost side is less than or equal to a difference threshold;
determining that the screen is in a non-horizontal state when an absolute value of a height difference between the lowermost side and the uppermost side is greater than the difference threshold.
4. The display device according to claim 1, wherein before controlling the driving component to drive the lowermost side to continue rising, the controller is further configured to: calculating the moving time according to the absolute value of the height difference between the lowest side and the highest side and the current moving speed of the lowest side;
and driving the lowest side to continuously rise until the screen recovers the horizontal state, wherein the time is the moving time.
5. The display device according to claim 1, wherein the driving component is adjusted to control the driving component to drive the lowest side of the screen to continue to ascend, and not to drive the highest side of the screen to continue to ascend until the screen returns to a horizontal state, specifically:
controlling the driving component to drive the lowest side to continuously rise, not driving the highest side to continuously rise at the same time, and continuously determining whether the screen is in a horizontal state according to the state information of the screen fed back by the monitoring component;
and when the screen is determined to be still in a non-horizontal state, continuously controlling the driving assembly to drive the lowest side to continuously rise, and not driving the highest side to continuously rise at the same time until the screen returns to the horizontal state.
6. The display device according to claim 1, wherein the monitoring component includes two sets of image collectors, the two sets of image collectors are respectively disposed on two sides of the screen, the two sets of image collectors collect image information of the screen at the same time, and the state information of the screen is determined according to the image information of the screen collected by the two sets of image collectors at the same time.
7. A screen correction method of a display device is applied when the screen moves to the top, and comprises the following steps:
when the screen is determined to be in a non-horizontal state according to the state information, the driving component is controlled to drive the lowest side of the screen to continuously rise, and meanwhile, the highest side of the screen is not driven to continuously rise until the screen returns to the horizontal state, wherein the screen is configured to be capable of rolling up and down, the driving component is configured to drive the screen to be unfolded or rolled, and the state information is fed back to the controller after the monitoring component monitors the state of the screen.
8. The screen correction method of the display device according to claim 7, wherein the specific step of determining that the screen moves to the top is: and when the current rise time is greater than or equal to a rise time threshold, determining that the screen moves to the top, wherein the rise time threshold is the time required for the screen prestored in the controller to rise from the absolute zero point of the screen to the top.
9. The screen correction method of a display device according to claim 7, wherein before controlling the driving assembly to drive the lowermost side to continue rising, the method further comprises: calculating the moving time according to the absolute value of the height difference between the lowest side and the highest side and the current moving speed of the lowest side;
and driving the lowest side to continuously rise until the screen recovers the horizontal state, wherein the time is the moving time.
10. The screen correction method of the display device according to claim 7, wherein the driving component is adjusted to control the driving component to drive the lowest side of the screen to continue rising, and not drive the highest side of the screen to continue rising until the screen returns to the horizontal state, specifically:
controlling the driving component to drive the lowest side to continuously rise, not driving the highest side to continuously rise at the same time, and continuously determining whether the screen is in a horizontal state according to the state information of the screen fed back by the monitoring component;
and when the screen is determined to be still in a non-horizontal state, continuously controlling the driving assembly to drive the lowest side to continuously rise, and not driving the highest side to continuously rise at the same time until the screen returns to the horizontal state.
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| CN111314682A (en) * | 2020-04-01 | 2020-06-19 | 成都极米科技股份有限公司 | Curtain picture display method and device and projection equipment |
| CN114520893A (en) * | 2020-11-18 | 2022-05-20 | 成都极米科技股份有限公司 | Picture projection method and device, projection equipment and readable storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113938726A (en) | 2022-01-14 |
| CN113938725B (en) | 2023-05-05 |
| CN113938725A (en) | 2022-01-14 |
| CN114125518A (en) | 2022-03-01 |
| CN113938727B (en) | 2023-05-05 |
| CN114125518B (en) | 2023-05-05 |
| CN113938727A (en) | 2022-01-14 |
| CN113938730B (en) | 2023-05-05 |
| CN113938728A (en) | 2022-01-14 |
| CN113938726B (en) | 2023-03-31 |
| CN113938730A (en) | 2022-01-14 |
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