CN113938725B - 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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- CN113938725B CN113938725B CN202110296907.7A CN202110296907A CN113938725B CN 113938725 B CN113938725 B CN 113938725B CN 202110296907 A CN202110296907 A CN 202110296907A CN 113938725 B CN113938725 B CN 113938725B
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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
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
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- H—ELECTRICITY
- 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. If the screen is determined to be in a horizontal state, the driving assembly is not adjusted, and thus, the moving state of the screen is not required to be adjusted. If it is determined that the screen is not in a horizontal state, the drive assembly is adjusted so that the first side of the screen moves at the adjusted speed. Finally, the moving speeds of the first side and the second side of the screen are consistent while the screen is restored to the horizontal state. According to the method and the device for achieving the screen horizontal movement, the screen horizontal movement can be guaranteed in the screen movement process, and therefore user watching experience is improved.
Description
The present application claims priority from the chinese patent office, application number 202010603016.7, chinese patent application entitled "a display device", filed 29 in month 06 of 2020, the entire contents of which are incorporated herein by reference.
Technical Field
The application relates to the technical field of display equipment, in particular to a screen correction method of display equipment and the display equipment.
Background
The roll screen laser television adopts a curtain as a screen to display images, and a driving component capable of being rolled is designed at the side edge of the screen, so that the television can be unfolded from bottom to top. The screen is placed in the bottom space by the roll screen laser television, and when the television is needed to be seen, a driving component hidden in the box can start to work, so that the screen rolled into a group is slowly pushed out.
The screen of the roll screen laser television is lifted and lowered by means of a driving assembly. In a normal ideal state, the screen is always kept in a horizontal state during the process of driving the screen to rise and fall by the driving component.
However, in the process of driving the screen by the driving assembly, there is a possibility that both sides of the screen are not horizontal. Taking the driving assembly as an example, the driving assembly comprises two groups of drivers, and the two groups of drivers respectively drive the left side and the right side of the screen to move. Typically, the two sets of drivers are set to have the same parameters and the speed of movement is uniform across the screen to maintain the screen in a horizontal state. However, due to the influence of mechanical characteristics and mechanical aging of the driving assembly, there may be a case that in the process of moving the screen, two groups of driver parameters are different, and moving speeds of two sides of the screen are inconsistent, so that the screen is not horizontal, which results in poor viewing experience of a user. There is therefore a need for a television that can ensure screen level during screen movement.
Disclosure of Invention
The application provides a screen correction method of display equipment and the display equipment, which are used for solving the problem that the prior display equipment has poor watching experience of a user due to the influence of mechanical characteristics and mechanical ageing of a driving component and possibly the condition that a screen is not horizontal in the screen moving process.
In a first aspect, the present embodiment provides a display apparatus, including:
a screen configured to be curlable up and down;
a driving assembly configured to drive the screen to be unfolded or curled;
a monitoring component configured to monitor a state of the screen during the unfolding or rolling process of the screen and feed back the state information of the screen to a controller;
a controller configured to:
when the screen is determined to be in a non-horizontal state according to the state information, adjusting the driving assembly to enable the driving assembly to drive the first side of the screen to move according to the adjusted speed, and enabling the moving speed of the first side and the moving speed of the second side of the screen to be consistent while the screen is restored to the horizontal state;
the drive assembly is not adjusted when the screen is determined to be in a horizontal state based on the state information.
In a second aspect, the present embodiment provides a screen correction method of a display device, the method being applied to a process in which a screen is in an expanded or curled state, including:
adjusting a driving assembly to enable the driving assembly to drive a first side of the screen to move according to the adjusted speed when the screen is in a non-horizontal state according to state information of the screen fed back by a monitoring assembly, and enabling the moving speeds of the first side and a second side of the screen to be consistent when the screen is restored to the horizontal state, wherein the driving assembly is configured to drive the screen to be unfolded or curled;
and when the screen is determined to be in a horizontal state according to the state information of the screen fed back by the monitoring component, the driving component is not regulated.
According to the display device and the screen correction method of the display device, the monitoring component is utilized to monitor the state of the screen in real time, and whether the screen is in a horizontal state is judged according to the state information of the screen. If the screen is determined to be in a horizontal state, the driving assembly is not adjusted, and thus, the moving state of the screen is not required to be adjusted. If it is determined that the screen is not in a horizontal state, the drive assembly is adjusted so that the first side of the screen moves at the adjusted speed. Finally, the moving speeds of the first side and the second side of the screen are consistent while the screen is restored to the horizontal state. According to the method and the device for achieving the screen horizontal movement, the screen horizontal movement can be guaranteed in the screen movement process, and therefore user watching experience 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 that are 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 other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 illustrates a usage scenario of a display device according to some embodiments;
fig. 2 shows a hardware configuration block diagram of the control apparatus 100 according to some embodiments;
fig. 3 illustrates a hardware configuration block diagram of a display device 200 according to some embodiments;
FIG. 4 illustrates a software configuration diagram in a display device 200 according to some embodiments;
fig. 5 illustrates an overall external schematic view of a display device 200 according to some embodiments;
FIG. 6 illustrates a schematic front view of a display device 200 in accordance with some embodiments;
FIG. 7 illustrates a right-side schematic view of a display device 200 in accordance with some embodiments;
FIG. 8 illustrates a schematic right-hand 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 schematic diagram of a lift profile of a screen in a display device 200 according to some embodiments;
FIG. 11 illustrates an interaction signaling diagram for 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 screen correction method flowchart for yet another display device, in accordance with some embodiments.
Detailed Description
For purposes of clarity and implementation of the present application, the following description will make clear and complete descriptions of exemplary implementations of the present application with reference to the accompanying drawings in which exemplary implementations of the present application are illustrated, it being apparent that the exemplary implementations described are only some, but not all, of the examples of the present application.
It should be noted that the brief description of the terms in the present application is only for convenience in understanding the embodiments described below, and is not intended to limit the embodiments of the present application. Unless otherwise indicated, these terms should be construed in their ordinary and customary meaning.
The terms "first," second, "" third and the like in the description and in the claims and in the above drawings are used for distinguishing between similar or similar 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," "comprising," and "having," 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 explicitly 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 function 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 device 200 is also in data communication with a server 400, and a user can operate the display device 200 through the smart device 300 or the control apparatus 100.
In some embodiments, the control apparatus 100 may be a remote controller, and the communication between the remote controller and the display device 200 includes at least one of infrared protocol communication or bluetooth protocol communication, and other short-range communication modes, and the display device 200 is controlled by a wireless or wired mode. 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 one of a mobile terminal, tablet, computer, notebook, AR/VR device, etc.
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 running on a smart device.
In some embodiments, the smart device 300 and the display device 200 may also be used for communication of data.
In some embodiments, the display device 200 may also perform control 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 through a module configured inside the display device 200 device for acquiring voice commands, or the voice command control of the user may be received through a voice control apparatus configured outside the display device 200 device.
In some embodiments, the display device 200 is also in data communication with a server 400. The display device 200 may be permitted to make communication connections via 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 device 200. The server 400 may be a cluster, or may be multiple clusters, and may include one or more types of servers.
In some embodiments, software steps performed by one step execution body may migrate on demand to be performed on another step execution body in data communication therewith. For example, software steps executed by the server may migrate to be executed on demand on a display device in data communication therewith, and vice versa.
Fig. 2 exemplarily shows a block diagram of a configuration of the control apparatus 100 in accordance with 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 of a user and convert the operation instruction into an instruction recognizable and responsive to the display device 200, and may act as an intermediary for interaction between the user and the display device 200.
In some embodiments, the communication interface 130 is configured to communicate with the outside, including 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, keys, or an alternative module.
Fig. 3 shows a hardware configuration block diagram of the display device 200 in accordance with an exemplary embodiment.
In some embodiments, display apparatus 200 includes at least one of a modem 210, a communicator 220, a detector 230, an external device interface 240, a controller 250, a display 260, an audio output interface 270, 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, RAM, ROM, a first interface for input/output to an nth interface.
In some embodiments, the display 260 includes a display screen component for presenting a picture, and a driving component for driving an image display, for receiving an image signal from the controller output, for displaying video content, image content, and components of a 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 modem 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, or other network communication protocol chip or a near field communication protocol chip, 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 capturing the intensity of ambient light; alternatively, the detector 230 includes an image collector such as a camera, which may be used to collect external environmental scenes, user attributes, or user interaction gestures, or alternatively, the detector 230 includes a sound collector such as a microphone, or the like, 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, etc. The input/output interface may be a composite input/output interface formed by a plurality of interfaces.
In some embodiments, the controller 250 and the modem 210 may be located in separate devices, i.e., the modem 210 may also be located in an external device to the main device in which the controller 250 is located, such as an external set-top box or the like.
In some embodiments, the controller 250 controls the operation of the display device and responds to user operations through various software control programs stored on the memory. The controller 250 controls the overall operation of the display apparatus 200. For example: in response to receiving a user command to select 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 operable control. The operations related to the selected object are: displaying an operation of connecting to a hyperlink page, a document, an image, or the like, or executing an operation of a program corresponding to the icon.
In some embodiments the controller includes at least one of a central processing unit (Central Processing Unit, CPU), video processor, audio processor, graphics processor (Graphics Processing Unit, GPU), RAM Random Access Memory, RAM), ROM (Read-Only Memory, ROM), first to nth interfaces 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 received from the outside, so as to finally display and play various audio and video contents. The CPU processor may include a plurality of processors. Such as one main processor and one or more sub-processors.
In some embodiments, a graphics processor is used to generate various graphical objects, such as: at least one of icons, operation menus, and user input instruction display graphics. The graphic processor comprises an arithmetic unit, which is used for receiving various interactive instructions input by a user to operate and displaying various objects according to display attributes; the device 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, perform at least one of decompression, decoding, scaling, noise reduction, frame rate conversion, resolution conversion, image composition, and the like according to a standard codec protocol of an input signal, and obtain a signal that is displayed or played on the directly displayable device 200.
In some embodiments, the video processor includes at least one of a demultiplexing module, a video decoding module, an image compositing 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 demultiplexed video signal, including decoding, scaling and the like. And an image synthesis module, such as an image synthesizer, for performing superposition mixing processing on the graphic generator and the video image after the scaling processing according to the GUI signal input by the user or generated 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 frame rate into a video output signal and changing the video output signal to be in accordance with a display format, such as outputting RGB data signals.
In some embodiments, the audio processor is configured to receive an external audio signal, decompress and decode according to a standard codec protocol of an input signal, and at least one of noise reduction, digital-to-analog conversion, and amplification, to obtain a sound signal that can be played in the speaker.
In some embodiments, a user may input a user command through a Graphical User Interface (GUI) displayed on the display 260, and the user input interface receives the user input command 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 recognizes the sound or gesture through the sensor to receive the user input command.
In some embodiments, a "user interface" is a media interface for interaction and exchange of information between an application or operating system and a user that enables conversion between an internal form of information and a form acceptable to the user. A commonly used presentation form of the user interface is a graphical user interface (Graphic User Interface, GUI), which refers to a user interface related to computer operations that is displayed in a graphical manner. It may be an interface element such as an icon, a window, a control, etc. displayed in a display screen of the electronic device, where the control may include at least one of 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, the user interface 280 is an interface (e.g., physical keys on a display device body, or the like) that may be used to receive control inputs.
In some embodiments, a system of display devices may include a Kernel (Kernel), a command parser (shell), a file system, and an application program. The kernel, shell, and file system together form the basic operating system architecture that allows users to manage files, run programs, and use the system. After power-up, the kernel is started, the kernel space is activated, hardware is abstracted, hardware parameters are initialized, virtual memory, a scheduler, signal and inter-process communication (IPC) are operated and maintained. After the kernel is started, shell and user application programs are loaded again. The application program is compiled into machine code after being started to form a process.
Referring to FIG. 4, in some embodiments, the system is divided into four layers, from top to bottom, an application layer (simply "application layer"), an application framework layer (Application Framework) layer (simply "framework layer"), a An Zhuoyun row (Android run) and a system library layer (simply "system runtime layer"), and a kernel layer, respectively.
In some embodiments, at least one application program is running in the application program layer, and these application programs may be a Window (Window) program of an operating system, a system setting program, a clock program, or the like; or may be 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 (application programming interface, API) and programming framework for application programs of the application layer. The application framework layer includes a number of predefined functions. The application framework layer corresponds to a processing center that decides to let the applications in the application layer act. Through the API interface, the application program can access the resources in the system and acquire the services of the system in the execution.
As shown in fig. 4, the application framework layer in the embodiment of the present application includes a manager (manager), 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 to interact with all activities that are running in the system; a Location Manager (Location Manager) is used to provide system services or applications with access to system Location services; a Package Manager (Package Manager) for retrieving various information about an application Package currently installed on the device; a notification manager (Notification Manager) for controlling the display and clearing of notification messages; a Window Manager (Window Manager) is used to manage bracketing icons, windows, toolbars, wallpaper, and desktop components on the user interface.
In some embodiments, the activity manager is used to manage the lifecycle of the individual applications as well as the usual navigation rollback functions, such as controlling the exit, opening, fallback, etc. of the applications. The window manager is used for managing all window programs, such as obtaining the size of the display screen, judging whether a status bar exists or not, locking the screen, intercepting the screen, controlling the change of the display window (for example, reducing the display window to display, dithering display, distorting display, etc.), etc.
In some embodiments, the system runtime layer provides support for the upper layer, the framework layer, and when the framework layer is in use, the android operating system runs the C/C++ libraries contained 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 kernel layer contains at least one of the following drivers: audio drive, display drive, bluetooth drive, camera drive, WIFI drive, USB drive, HDMI drive, sensor drive (e.g., fingerprint sensor, temperature sensor, pressure sensor, etc.), and power supply drive, etc.
In some embodiments, the display device may directly enter the display interface of the signal source selected last time after being started, or the 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, etc., and after the user selects a different signal source, the display may display the content obtained from the different signal source.
The roll screen laser television adopts a curtain as a screen to display images, and a driving component capable of being rolled is designed at the side edge of the screen, so that the television can be unfolded from bottom to top. The screen is placed in the bottom space by the roll screen laser television, and when the television is needed to be seen, a driving component hidden in the box can start to work, so that the screen rolled into a group is slowly pushed out.
The screen of the roll screen laser television is lifted and lowered by means of a driving assembly. In a normal ideal state, the screen is always kept in a horizontal state during the process of driving the screen to rise and fall by the driving component.
However, in the process of driving the screen by the driving assembly, there is a possibility that both sides of the screen are not horizontal. Taking the driving assembly as an example, the driving assembly comprises two groups of drivers, and the two groups of drivers respectively drive the left side and the right side of the screen to move. Typically, the two sets of drivers are set to have the same parameters and the speed of movement is uniform across the screen to maintain the screen in a horizontal state. However, due to the influence of mechanical characteristics and mechanical aging of the driving assembly, there may be a case that in the process of moving the screen, two groups of driver parameters are different, and moving speeds of two sides of the screen are inconsistent, so that the screen is not horizontal, which results in poor viewing experience of a user.
In order to solve the above-mentioned problem, the present application provides a display device, the structure of the display device may refer to fig. 5 and fig. 6, and the interaction flow of each component of the display device may refer to fig. 11.
As can be seen from fig. 5 and 6, the display device further includes, on the basis of the display device shown in the above embodiments: a screen 275, a drive assembly 276, and a monitoring assembly 277. The display device in the embodiment of the application may be a laser television or an OLED television, which is not limited in this application. 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 a projection assembly 278.
The screen in the embodiment can complete rolling or extending action under the drive of the driving component. Accordingly, the screen may 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 rolled state, and specifically, fig. 7 may be referred to. The second type of screen needs to be extended in the playing scene, so that the extended screen can bear the media resource projected by the projection component. See fig. 8 for details. The third is an excessive state (not shown) in which the screen is between the rolled state and the extended state during upward movement or downward movement.
And a driving assembly connected to the screen and configured to drive the screen to move, the movement including upward movement or downward movement. The driving component can drive the screen to roll or extend based on the control of the controller.
In some possible embodiments the drive assembly may be a retractable track device or a motor. The left end and the right end of the screen are respectively provided with a motor, the middle section of the screen is also provided with a scroll lifting motor, the left end and the right end of the lifting screen are respectively provided with a motor, and meanwhile, the middle section of the lifting screen is provided with a scroll lifting motor.
The monitoring component, in some possible embodiments, may be an image collector, and correspondingly, the status information of the monitored screen may be image information. Specifically, the monitoring component may be a camera, and the status information of the corresponding monitored screen may be obtained through a photographed picture of the screen. The number of cameras can be one or more, wherein the image pickup area of at least one camera is a lifting screen area, and the camera is used for taking pictures of a screen and a display image in the lifting process. When the quantity of cameras is 2, two cameras are located projection assembly's both sides respectively. In some embodiments, the camera may be rotated in a horizontal plane, rotating the taking lens to the screen orientation when it is desired to take a screen and display an image photograph; when a photograph of a user needs to be taken, the photographing 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 change image in the picture according to the information of the picture and the reference value of the camera. The controller calculates the first side height and the second side height of the screen according to the information of the picture of the screen and the reference value of the camera. In this embodiment, when the first side is the left side, the second side is the right side, and when the first side is the right side, the second side is the left side.
The monitoring component, in some feasible embodiments, may be an angle monitor, and accordingly, the status information of the monitored screen is calculated by monitoring the real-time rotation angle of the driving component. Specifically, a corresponding list of the rotation angle and the screen movement height is stored in advance in the controller. Each rotation angle corresponds to a movement height, and when the controller receives the angle information, the movement height corresponding to the angle information can be called from the list, namely the rising height of the screen. And respectively acquiring real-time rotation angles of the two groups of driving assemblies monitored by the two groups of monitors, and acquiring the first side height and the second side height of the screen.
The screen of the laser display device will have a default set of ascending curve parameters when shipped from the factory. However, due to the inherent characteristics of the mechanical equipment, the north-south humiture, the winter-summer humiture and the mechanical aging effect on the machinery, the mechanical rising is lossy, and the performance of the same machinery may be different even if the performance of two mechanical equipment with the same specification is different in a long process or in different environments. To accommodate these differences, software is required to adaptively adjust the gain parameters according to the environment to ensure consistency of the rising curves and consistency of the rising traffic.
In order to solve the above problems, a main technical means is to prepare a set of ascending curve database. As a rising curve (a falling curve is not shown) shown in fig. 10, a rising process of the screen is divided into a reset phase, an acceleration phase, a uniform velocity phase, and a deceleration phase. The reset stage is the 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 stage is due to the acceleration process. The acceleration phase is the process of the screen rising from the reference zero point, and the rising speed rises from a lower value to a higher value. When the rising speed of the screen is raised to a preset constant speed, a constant speed stage is entered. The screen continues to rise at the preset average speed and keeps rising at a constant speed. When the height reaches the next highest point (the start position of the deceleration stage), the screen rising speed starts to decrease, and the screen rising process enters the deceleration stage until the screen rises to the highest point. The embodiment of the application relates to screen correction (comprising a rising process and a falling process) in a uniform speed stage.
As shown in fig. 6, in the process of raising the screen, the first side height and the second side height of the screen are identical, and the screen is in a horizontal state. As shown in fig. 9, in the course of the screen rising, the first side height and the second side height of the screen are not uniform, and the screen is in a non-horizontal state.
In some embodiments, if the monitoring component includes an image collector, the step of determining whether the screen is horizontal through image information of the screen collected by the image collector is:
and calculating the first side height and the second side height of the screen, namely the first side height and the second side height, according to the acquired screen image information and the reference position information of the image acquisition device. And if the absolute value of the difference between the heights of the first side and the second side is smaller than or equal to a difference threshold value, determining that the screen is in a horizontal state. If the absolute value of the difference between the first side height and the second side height is greater than the difference threshold, the screen is determined to be in a non-horizontal state. The variance threshold may be empirical data pre-stored in the controller.
In some embodiments, if the monitoring assembly includes an angle monitor, the display device includes two sets of driving assemblies, the rotation angle information of the two sets of driving assemblies being monitored by the angle monitor, respectively. And respectively calculating the heights of the two sides through the rotation angle information. The display device includes two sets of driving assemblies that respectively drive two sides of the screen to move. And respectively calculating the heights of the two sides according to the rotation angle information of the two groups of driving components which are respectively monitored.
The flow of interaction between the components of the display device is illustrated schematically in fig. 11. The controller is configured to perform: in the moving process of the screen, when the screen is determined to be in a non-horizontal state according to the state information of the screen monitored by the monitoring component, the driving component is regulated so that the driving component drives the first side of the screen to move according to the regulated speed, and the moving speed of the first side and the second side of the screen is consistent while the screen is restored to the horizontal state.
And when the screen is determined to be in a horizontal state according to the state information of the screen monitored by the monitoring component, the driving component is not regulated, namely, the screen is driven to move according to the original speed.
In some embodiments, the speed of movement of the highest side of the screen may be adjusted with reference to the lowest side of the screen. That is, if the height of the first side is higher than the height of the second side, the movement speed of the first side is adjusted to actually reduce the movement speed of the first side while maintaining the movement speed of the second side unchanged.
In some embodiments, the speed of movement of the lowest side of the screen may be adjusted with reference to the highest side of the screen. I.e. if the height of the first side is lower than the height of the first side, the movement speed of the first side is adjusted to actually increase the movement speed of the first side, while the movement speed of the second side is maintained unchanged.
The driving components can be one group or multiple groups. In the embodiment of the application, two groups of driving components are taken as examples, and a specific process of adjusting speed is described.
The two sets of driving components in the embodiment of the application are used for driving the first side movement and the second side movement of the screen respectively. In the embodiment of the application, the controller directly controls the rotation of the driving assembly, namely, controls the angular speed of the motor. The motor converts its angular velocity into a linear velocity of the screen. The specific conversion formula is v=rω, wherein v is the linear speed of the screen, r is the radius of the rotating shaft, and ω is the angular speed of the motor rotation. The curtain thickness that adopts of screen in this embodiment of application is less, ignores the variation in the pivot radius size of screen in the rising or decline process.
Based on the above embodiment, if the screen is in the process of rising and the height of the first side is lower than the height of the second side, it is explained that the moving speed of the first side is slower than the moving speed of the second side. The movement speed of the first side is adjusted with respect to the second side to actually increase the movement speed of the first side. The specific process of adjusting the moving speed of the first side is as follows:
and determining the movement speed increment of the first side of the screen according to the height difference Z between the height of the first side of the screen and the height of the second side of the screen and the preset adjustment time T (the adjustment is expected to be completed within the preset adjustment time). The initial calculation formula of the movement speed increment is as follows: dν=z/T.
And determining the increment compensation quantity of the moving speed of the first side of the screen according to the height difference between the first side of the screen and the second side of the screen and the current rising time. The calculation formula of the increment compensation quantity dd v of the moving speed is as follows: [ TH2/t-H/t ]]-[TH1/t-H/t]. Wherein TH2 and TH1 are the first side height and the second side height of the screen, respectively. t is the current rising time, H is the theoretical height of the current screen rising, and the calculation formula is as follows:
wherein r2=r1+xh, r1 is the inner diameter of the reel, h is the screen thickness, x is the current number of turns, and r2 is the maximum radius of the reel when the screen is not unwound.
And while the moving speed of the first side is increased by the moving speed increment (at the moment, the moving speed increment is a positive value), adjusting the moving speed increment by using a step-back algorithm until the moving speed increment is reduced to a moving speed increment supplementary value. At this time, the heights of the first side and the second side are identical, and at the same time, the moving speeds of the first side and the second side are identical, so that it is ensured that the heights of the first side and the second side are identical, that is, the screen is kept in a horizontal state, in the process of continuing to lift.
Here, the specific process of adjusting the movement speed increment by using the step-back algorithm is as follows: the value of the current movement speed increment is divided by a step-back value every interval preset for an interval time, for example, the value of the current movement speed increment may be divided by two. And taking the obtained movement speed increment as the movement speed increment adopted in the next preset interval time.
Illustratively, the movement speed increment adjustment value is issued every 500ms, i.e. stepped back every 500 ms. According to the back-stepping algorithm of dv2, dv2/2 and dv2/4 … dd v, the screen moving speed is adjusted in an increment mode according to the moving speed after back stepping. The monitoring component monitors in real time whether the state of the screen is level while adjusting the movement speed increment using a step-back algorithm. If the screen is monitored to be in a horizontal state, directly issuing a movement speed increment supplementary value dd v to the movement speed of the first side of the screen. If the screen is not in the horizontal state, continuing to issue the moving speed increment to the moving speed of the first side of the screen in a stepping-back algorithm mode until the moving speed increment steps back to the moving speed increment supplementary value dd upsilon.
In some embodiments, the movement speed increment can also be adjusted by using a non-stepping-back algorithm, which comprises the following specific steps: and the moving speed of the first side is regulated at all times in a moving speed increment, and when the regulated time reaches the preset regulating time, the moving speed increment is directly reduced to a moving speed increment supplementary value dd upsilon.
In some embodiments, if the screen is in the process of being raised and the height of the first side is greater than the height of the second side, this indicates that the first side is moving faster than the second side. The movement speed of the first side is adjusted with respect to the second side so as to actually reduce the movement speed of the first side. The specific process for adjusting the moving speed of the first side is as follows: while decreasing the moving speed of the first side by a moving speed increment (at which time the moving speed increment is negative), the moving speed increment is adjusted by a step-back algorithm until the moving speed increment decreases to a moving speed increment supplement value. The calculation method of the movement speed increment and the movement speed increment supplement value refers to the above embodiment.
In some embodiments, if the screen is in the process of being lowered and the height of the first side is lower than the height of the second side, this indicates that the first side moves faster than the second side moves. The movement speed of the first side is adjusted with respect to the second side in effect to reduce the movement speed of the first side while maintaining the movement speed of the second side unchanged. The specific process of adjusting the first side moving speed may refer to the above embodiment, and this embodiment is not repeated.
In some embodiments, if the screen is in the process of being lowered and the height of the first side is higher than the height of the second side, this indicates that the speed of movement of the first side is slower than the speed of movement of the second side. The movement speed of the first side is adjusted with respect to the second side in effect to increase the movement speed of the first side while maintaining the movement speed of the second side unchanged. The specific process of adjusting the first side moving speed may refer to the above embodiment, and this embodiment is not repeated.
An embodiment of the present application provides a screen correction method of a display device, as shown in a flowchart of the screen correction method of the display device in fig. 12, including the following steps:
step one, the screen is in the process of unfolding or curling (only a constant speed stage is involved), and the monitoring component 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. If the screen is in a non-horizontal state, the controller adjusts the driving assembly so that the driving assembly drives the first side of the screen to move at the adjusted speed, and so that the moving speeds of the first side and the second side of the screen are consistent while the screen is restored to the horizontal state.
If the screen is in a horizontal state, the driving components are not adjusted, namely, the two sides of the screen move according to the original speed. And meanwhile, the monitoring component continues to monitor the state of the screen and periodically sends the state information of the screen to the controller.
Based on the above method embodiments, the present application provides a screen correction method of a display device, as shown in a flowchart of the screen correction method of the display device in fig. 13, including the following steps:
step one, the screen is in the process of unfolding or curling (only a constant speed stage is involved), and the monitoring component 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 first side height and the second side height of the screen according to the state information of the screen, and simultaneously calculates the absolute value of the height difference between the first side and the second side. The controller also stores a difference threshold value of the height difference in advance. If the absolute value of the height difference between the first side and the second side is smaller than or equal to the difference threshold value, the screen is determined to be in a horizontal state, the driving assembly does not need to be adjusted, and the first step is returned again.
If the absolute value of the height difference between the first side and the second side is larger than the difference threshold value, the screen is determined to be in a non-horizontal state, and the driving assembly needs to be adjusted to carry out the step three.
And thirdly, adjusting the moving speed of the first side of the screen by taking the second side of the screen as a reference, namely adjusting the moving speed of the first side without adjusting the moving speed of the second side, so that the heights of the first side and the second side are consistent (the absolute value of the height difference is smaller than or equal to a difference threshold value), and meanwhile, the moving speeds of the first side and the second side are consistent. Alternatively, the moving speed of the second side of the screen is adjusted with the first side of the screen as a reference, that is, the moving speed of the first side is not adjusted, but the moving speed of the second side is adjusted so that the heights of the first side and the second side are uniform, and the moving speeds of the first side and the second side are uniform. For a specific adjustment of the movement speed reference is made to the above-described display device embodiments.
The same or similar content may be referred to each other in various embodiments of the present application, and the related embodiments are not described in detail.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution 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 scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions 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 (7)
1. A display device, characterized by comprising:
a screen configured to be curlable up and down;
a driving assembly configured to drive the screen to be unfolded or curled;
a monitoring component configured to monitor a state of the screen and feed back state information of the screen to a controller in a process of expanding or curling the screen, wherein the monitoring component can monitor the state of the screen at any moment;
a controller configured to:
when the screen is in a non-horizontal state according to the state information, determining a moving speed increment for adjusting the moving speed of the first side according to the height difference of the first side and the second side and a preset adjusting time, determining a moving speed increment supplementary value for adjusting the moving speed of the first side according to the height difference of the first side and the second side and the current rising time, adjusting the moving speed of the first side in an increment mode of the moving speed, dividing the current value of the moving speed increment by a step-out value every preset interval time to obtain the moving speed increment adopted by the next preset interval time until the moving speed increment is adjusted to the moving speed increment supplementary value, then enabling the driving assembly to drive the first side of the screen to move according to the adjusted speed, enabling the moving speeds of the first side and the second side of the screen to be consistent while the moving speed increment is adjusted by a step-out algorithm, monitoring whether the state of the screen is horizontal or not by the monitoring assembly in real time, if the moving speed increment of the first side is adjusted to the first side, continuing to move the moving speed of the screen in a step-out mode until the screen is not monitored to be the moving speed supplementary to the first side;
The drive assembly is not adjusted when the screen is determined to be in a horizontal state based on the state information.
2. The display device according to claim 1, wherein determining whether the screen is in a horizontal state based on the status information is specifically:
calculating the first side height and the second side height of the screen according to the state information;
determining that the screen is in a horizontal state when the absolute value of the height difference between the first side height and the second side height is less than or equal to a difference threshold;
and determining that the screen is in a non-horizontal state when the absolute value of the height difference between the first side height and the second side height is greater than the difference threshold.
3. The display device of claim 2, wherein the monitoring component includes an image collector, the status information is image information of the screen collected by the image collector, and the first side height and the second side height are calculated from the image information.
4. The display device according to claim 2, wherein the monitoring component includes an angle monitor configured to monitor a rotation angle of the driving component, the status information is information determined according to a rotation angle of the driving component and a movement correspondence relation between the rotation angle of the driving component and a movement distance of the screen.
5. The display device of claim 1, wherein prior to determining whether the screen is in a horizontal state based on the state information, the controller is further configured to:
and controlling the driving assembly to drive the screen to move to the reference zero position when the screen is not moved to the reference zero position.
6. A screen correction method for a display device, wherein the method is applied to a screen in a process of unfolding or curling, and a monitoring component can monitor a state of the screen at any moment, and the method comprises the following steps:
determining a moving speed increment for adjusting the moving speed of the first side according to the height difference of the first side and the second side and a preset adjusting time when the screen is in a non-horizontal state according to the state information of the screen fed back by a monitoring component, determining a moving speed increment for adjusting the moving speed of the first side according to the height difference of the first side and the second side and a current rising time, determining a moving speed increment supplementary value for adjusting the moving speed of the first side according to the height difference of the first side and the second side, adjusting the moving speed of the first side by the moving speed increment, dividing the current value of the moving speed increment by a step-back value every preset interval time, obtaining the moving speed increment adopted by the next preset interval time until the moving speed increment is adjusted to the moving speed increment supplementary value, then enabling a driving component to drive the first side of the screen to move according to the adjusted speed, enabling the moving speed of the first side and the second side of the screen to be consistent while the screen is restored to a horizontal state, enabling the driving component to be configured to drive the screen to be unfolded or curled, enabling the moving speed of the screen to adjust the moving speed of the first side while the moving speed increment by a step-back algorithm to adjust the moving speed, enabling the monitoring component to move to the first side to the monitor the moving speed to the screen to the monitor the moving speed of the first side until the screen to be in a state, and if the moving speed of the screen is in a state of the first side, and the monitoring component is a state, and if the moving speed is a state, and continues to move to the screen is a monitoring component is increased to the moving speed;
And when the screen is determined to be in a horizontal state according to the state information of the screen fed back by the monitoring component, the driving component is not regulated.
7. The screen correction method of a display device according to claim 6, wherein determining whether the screen is in a horizontal state based on the state information is specifically:
calculating the first side height and the second side height of the screen according to the state information;
when the absolute value of the height difference between the first side height and the second side height is smaller than or equal to a difference threshold value, determining that the screen is in a horizontal state;
and determining that the screen is in a non-horizontal state when the absolute value of the height difference between the first side height and the second side height is greater than the difference threshold.
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| CN202180046281.2A CN116391155A (en) | 2020-06-29 | 2021-06-25 | Display device and screen correction method |
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| CN202110296907.7A Active CN113938725B (en) | 2020-06-29 | 2021-03-19 | Screen correction method of display device and display device |
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| CN202110298513.5A Active CN113938730B (en) | 2020-06-29 | 2021-03-19 | Projection assembly correction method of display device and display device |
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| CN202110298513.5A Active CN113938730B (en) | 2020-06-29 | 2021-03-19 | Projection assembly correction method of display device and display device |
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| CN117288095B (en) * | 2023-11-27 | 2024-02-13 | 浙江极氪汽车研究开发有限公司 | Detection device and method for threshold floor lamp |
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| CN113938730A (en) | 2022-01-14 |
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