CN117012099A - Display equipment - Google Patents

Abstract

The application discloses display equipment which is used for timely identifying and solving abnormal conditions of a curled screen in a moving process and improving user experience. The display device includes a curled screen; a driving assembly for driving the curled screen to be unfolded or curled; a monitoring assembly for monitoring the height of the curled screen during the unwinding or curling of the curled screen; a controller for performing: in the process of expanding or curling the curled screen according to a preset speed curve and displaying a preset image according to a preset height curve, detecting that the height of the curled screen is unchanged within a preset time, and stopping expanding or curling the curled screen and displaying the preset image; and controlling the curled screen to enter a reset state so that the curled screen is unfolded or curled again according to the preset speed curve after returning to a relative zero point, and displaying a preset image again according to the preset height curve by the curled screen.

Description

Display equipment

The present application is a divisional application of China patent office, application No. 202110298436.3, filed on 19/03/2021, entitled "display device", the entire contents of which are incorporated herein by reference.

Technical Field

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

Background

The laser television adopts a laser light source as a display light source and forms images by matching with a projection display technology, is provided with a special projection screen, and can receive broadcast television programs or internet television programs. In the related art, a laser television adopts a screen which is unfolded from top to bottom, and also adopts a screen which is unfolded from bottom to top in a television cabinet. The latter is to set the optical machine and the curled screen in the TV cabinet, when the TV is turned on, the screen will rise slowly from the TV cabinet, and the image of the optical machine will be printed in the global position behind. However, during the ascent or descent of the screen, an abnormal condition such as a screen jam may occur. If the abnormal situation is not handled in time, the screen is blocked at a certain position for a long time, and even partial elements can be damaged, and the user experience is poor.

Disclosure of Invention

The embodiment of the application provides a display device which is used for timely identifying and solving abnormal conditions of a curled screen in a moving process and improving user experience.

In a first aspect, there is provided a display device including:

Curling the screen;

a driving assembly for driving the curled screen to be unfolded or curled;

a monitoring assembly for monitoring the height of the curled screen during the unwinding or curling of the curled screen;

a controller for performing:

in the process of expanding or curling the curled screen according to a preset speed curve and displaying a preset image according to a preset height curve, detecting that the height of the curled screen is unchanged within a preset time, and stopping expanding or curling the curled screen and displaying the preset image;

and controlling the curled screen to enter a reset state so that the curled screen is unfolded or curled again according to the preset speed curve after returning to a relative zero point, and displaying a preset image again according to the preset height curve by the curled screen.

In a second aspect, there is provided a display device including:

curling the screen;

a driving assembly for driving the curled screen to be unfolded or curled;

the monitoring component is used for monitoring abnormal state information of the driving component;

a controller for performing:

in the process of expanding or curling the curled screen according to a preset speed curve and displaying a preset image according to a preset height curve, abnormal state information sent by a monitoring component is received, and the expanding or curling of the curled screen and the displaying of the preset image are stopped;

And controlling the curled screen to enter a reset state so that the curled screen is unfolded or curled again according to the preset speed curve after returning to a relative zero point, and displaying a preset image again according to the preset height curve by the curled screen.

In a third aspect, there is provided a display device including:

curling the screen;

a driving assembly for driving the curled screen to be unfolded or curled;

a monitoring assembly for monitoring the height of the curled screen during the unwinding or curling of the curled screen;

a controller for performing:

in the process of expanding or curling the curled screen according to a preset speed curve and displaying a preset image according to a preset height curve, detecting that the height of the curled screen is unchanged within a preset time, and suspending expanding or curling the curled screen and displaying the preset image;

and controlling the curled screen to display a user interface, wherein the user interface comprises abnormal information prompt information.

In some embodiments, the controller performs controlling the curled screen display user interface in the following manner:

determining an effective display area and a non-effective display area of the user interface according to the current curled screen height;

the non-effective display area is blacked out, and abnormal information prompt information is set at a preset position of the effective display area, so that a processed user interface is obtained;

And controlling the curled screen to display the processed user interface.

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

responding to an instruction input by a user to continue unfolding or curling the curled screen, and re-drawing a speed curve and a height curve according to the current curled screen height, the curled screen total height, the curled screen rising time and the curled screen rising total time;

controlling a curled screen to unwind or curl the curled screen according to a redevelopred speed curve;

and controlling the curled screen to display a preset image according to the redevelopment height curve.

In a fourth aspect, there is provided a display device including:

curling the screen;

a driving assembly for driving the curled screen to be unfolded or curled;

the monitoring component is used for monitoring abnormal state information of the driving component;

a controller for performing:

in the process of expanding or curling the curled screen according to a preset speed curve and displaying a preset image according to a preset height curve, receiving abnormal state information sent by a monitoring component, and suspending expanding or curling the curled screen and displaying the preset image;

and controlling the curled screen to display a user interface, wherein the user interface comprises abnormal information prompt information.

In some embodiments, the controller performs controlling the curled screen display user interface in the following manner:

determining an effective display area and a non-effective display area of the user interface according to the current curled screen height;

the non-effective display area is blacked out, and abnormal information prompt information is set at a preset position of the effective display area, so that a processed user interface is obtained;

and controlling the curled screen to display the processed user interface.

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

responding to an instruction of continuing to unfold or curl the curled screen input by a user, and re-drafting a speed curve and a height curve according to the current curled screen height, the total height of the curled screen, the rising time of the curled screen and the rising total time of the curled screen;

controlling the curled screen to expand or curl the curled screen according to the redevelopred speed curve;

and controlling the curled screen to display a preset image according to the redevelopment height curve.

In a fifth aspect, there is provided a display device including:

curling the screen;

the driving assembly is connected with the curled screen and used for driving the curled screen to move upwards or downwards;

The monitoring component is used for monitoring state information of the driving component;

a controller for performing:

and responding to a starting instruction input by a user, detecting that the current curled screen is not at an absolute zero position, controlling the curled screen to enter a reset state, enabling the curled screen to rise again according to a preset curve after returning to the relative zero position, and enabling the projection component to project a preset image again according to the preset curve.

In a sixth aspect, there is provided a display device including:

curling the screen;

a projection assembly;

a driving assembly for driving the curled screen to be unfolded or curled;

a monitoring assembly for monitoring the height of the curled screen during the unwinding or curling of the curled screen;

a controller for performing:

responding to a starting instruction input by a user, detecting that the current curled screen is not in an absolute zero position, and drawing a speed curve and a height curve according to the current curled screen height and the total height of the curled screen;

controlling a curled screen to unwind or curl the curled screen according to a speed curve;

and controlling the curled screen to display a preset image according to the height curve.

In the above embodiment, when it is detected that the abnormal situation of the curled screen occurs and the screen cannot be continuously expanded or curled in the process of expanding or curling the curled screen according to the preset speed curve and displaying the preset image according to the preset height curve, the curled screen may be controlled to enter the reset state so as to be expanded or curled again and display the preset image after returning to the relative zero point, or after the abnormal situation is solved, the curled screen is expanded or curled according to the redeveloped speed curve and the preset image is displayed according to the redeveloped height curve. Therefore, the user can timely identify and solve the abnormal situation of the curled screen in the moving process, and the user experience is improved.

Drawings

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 a perspective view of a display device 200 according to some embodiments;

fig. 6 illustrates a front view of a display device 200 according to some embodiments;

fig. 7 shows a schematic diagram of a curl screen curl in a display device 200 according to some embodiments;

fig. 8 illustrates a schematic diagram of a rolled screen unrolling in a display device 200 according to some embodiments;

FIG. 9 illustrates a timing diagram for non-abnormal operation of a display device;

FIG. 10 illustrates an image display schematic;

FIG. 11 illustrates a preset speed profile;

FIG. 12 illustrates a graph of time versus curl screen height for a display device in an abnormal situation;

FIG. 13 illustrates a timing diagram for operation in the event of an abnormality of a display device;

FIG. 14 is a diagram schematically illustrating a display of an anomaly information prompt box;

FIG. 15 is a diagram schematically illustrating another display of an anomaly information prompt box;

FIG. 16 illustrates a graph of time versus curl screen height for another display device exception condition;

fig. 17 exemplarily shows a timing chart of another operation in the case of an abnormality of the display device.

Detailed Description

For the purposes of making the objects and embodiments of the present application more apparent, an exemplary embodiment of the present application will be described in detail below with reference to the accompanying drawings in which exemplary embodiments of the present application are illustrated, it being apparent that the exemplary embodiments described are only some, but not all, of the embodiments of the present application.

It should be noted that the brief description of the terminology in the present application is for the purpose of facilitating understanding of the embodiments described below only 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-described figures 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 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 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 function as an 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 assembly, an OLED display assembly, and a projection display assembly, and may also be a projection device and a projection screen. The projection screen, the curl screen, the lift screen and the screen in the present application may all refer to the same 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, or the like. 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 for selecting a UI object to be displayed on the display component 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, which renders various objects obtained based on the arithmetic unit, wherein the rendered objects are used for being displayed on the display component.

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 component 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 (referred to as an "application layer"), an application framework layer (Application Framework layer) (referred to as a "framework layer"), a An Zhuoyun row (Android run) and a system library layer (referred to as a "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.

As shown in fig. 5 and 6, the curled screen 275 of the present embodiment may be driven by the driving assembly 276 to perform a winding or stretching operation. Accordingly, the curled screen 275 may be in three states: the first is that the curled screen 275 needs to be rolled up in a non-playing scene to reduce the footprint of the display device. At this time, the curled screen 275 is in a rolled state, and particularly, reference may be made to fig. 7. The second type of scene that is played requires the curled screen 275 to be extended so that the extended screen can carry the media assets projected by the projection component 278. See fig. 8 for details. The third is that the curl screen 275 is in an excessive state (not shown) between the rolled state and the extended state during the upward movement or the downward movement of the curl screen 275.

The curled screen 275 of the present embodiment may carry media assets projected by the projection component 278 for presentation to a user. The curled screen 275 may also be an OLED screen, displaying media assets directly to the user. The media assets can be images or videos, where the videos are presented in a frame-by-frame image, and thus in this embodiment the media assets can be collectively referred to as images.

In some possible embodiments, the curled screen 275 may be a diffuse reflective screen, or a regression screen.

A drive assembly 276 coupled to the curled screen 275 and configured to drive movement of the curled screen 275, the movement comprising upward movement or downward movement. The driving assembly 276 may bring the screen 275 up or down based on the control of the controller 250.

In some possible embodiments the drive assembly 276 may be a retractable track device or a motor. The motor can be respectively arranged at the left end and the right end of the screen, a scroll lifting motor can be arranged at the middle section of the screen, and the motor can be respectively arranged at the left end and the right end of the lifting screen, and meanwhile, a scroll lifting motor is arranged at the middle section of the lifting screen.

Monitoring component 277, in some possible embodiments, the monitoring component 277 includes an image collector, and accordingly, the information monitored by the monitoring component 277 may be image information. Specifically, the monitoring component 277 may be a camera, and the corresponding monitored information may be obtained through a picture of a screen taken. The number of cameras 279 may be one or more, wherein the image capturing area of at least one camera is a curled screen area, and the camera is used for capturing pictures of a screen and a display image during lifting. 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.

Monitoring assembly 277, in some possible embodiments, monitoring assembly 277 includes an angle monitor, and correspondingly, the real-time rotation angle of drive assembly 276 monitored by monitoring assembly 277. In another possible embodiment, the monitoring assembly 277 may also be a gravitational acceleration sensor, and the corresponding pose of the driving assembly 276 is obtained at any time during rotation of the driving assembly 276 by monitoring the information of the gravitational sensor in the 3 directions of the spatial coordinate system (x, y, z). The rotation angle of the drive assembly 276 is calculated from the pose.

The monitoring component 277, in some possible embodiments, the monitoring component 277 includes an infrared sensor, and the information monitored by the corresponding monitoring component 277 is whether there is a foreign object above the curled screen, and when a foreign object above the curled screen is detected, the rising process of the curled screen can be suspended in time.

In some embodiments, as shown in fig. 9, after the controller is powered on, the screen control system and the graphic image service are operated, and the sliding cover on the curled screen is controlled to be opened, the driving assembly is controlled to drive the curled screen to rise to a relative zero point (offset zero point or reference zero point), and the screen control system polls and sends a command to the monitoring assembly to acquire the current state and the height of the curled screen. And after the curled screen rises to the relative zero point, sending a screen rising instruction to the driving assembly to enable the driving assembly to rise the curled screen according to a preset speed curve, and informing the graphic image service to send the image to the projection assembly to be projected on the curled screen according to a preset height curve. In the process, the screen control system polls and sends an instruction to the monitoring component to acquire the current state and the height of the curled screen, if abnormal conditions occur, abnormal information is also sent to the screen control system, and the screen control system corrects the rising height of the curled screen according to the abnormal information and a preset curve. The rising height of the curled screen and the display height of the image are kept in a synchronized state. When the curled screen rises to the highest point, the monitoring component feeds back the state to the screen control system, and the curled screen rises completely.

In the related art, an abnormal situation such as a screen jam occurs during the ascending or descending of the screen. If the abnormal situation is not handled in time, the screen is blocked at a certain position for a long time, and even partial elements can be damaged, and the user experience is poor.

In some embodiments, the controller controls the curled screen to stop rising if no significant change in screen height is detected within a preset time, indicating that the screen is stuck.

In some embodiments, to ensure that the curled screen may rise smoothly to the highest point, infrared sensors are provided on the television cabinet or on both sides of the projection assembly, the infrared sensors being used to detect whether a foreign object above the curled screen blocks the curled screen from rising. If the infrared sensor detects a foreign object above the curled screen, the signal is sent to the controller. At this point, the curled screen will not be able to continue to rise.

In some embodiments, the curled screen can perform self-checking, when the curled screen detects that the curled screen is abnormal, abnormal information is sent to the controller through the monitoring component, and the controller can control the curled screen to stop rising after receiving the information.

In order to solve the above problems, an embodiment of the present application provides a workflow of a display device.

In some embodiments, the screen curl and expand can be the screen rise from bottom to top or the screen fall from top to bottom, or the screen curl and expand from left to right or from right to left, and the direction of the screen curl and expand is not limited by the application. Taking the example of rising of the curled screen during the starting process, the user can power up the projection component and the controller by pressing the start key of the control device or pressing the start key on the display device. After the controller is powered on, the sliding cover is controlled to be opened, and the curled screen is notified to rise to a relative zero point (offset zero point). The sliding cover is used for covering the upper part of the curled screen in the curled state when the curled screen is in the rolled state, and dust is prevented from falling on the surface of the curled screen. Meanwhile, the controller runs a screen control system and a graphic image service after being electrified, wherein the screen control system is connected with a monitoring component, and the monitoring component is used for acquiring state parameters of a driving component, so that information such as the height and the state of a curled screen is acquired, and the graphic image service is ready for playing a preset image.

In some embodiments, the preset image may be a preset picture, a preset animation or video, a preset start-up advertisement, or the like.

During the rising process of the curled screen, the controller can poll and send an instruction to the monitoring component, so that the current state, the height and other information of the curled screen provided by the monitoring component are obtained.

In some embodiments, the state of the curled screen includes: "failure state", "suspended state", "reset", "rising to offset", "offset waiting", "rising to target height", "reaching set height", "waiting at set height", "falling to offset", and "falling to absolute zero", etc.

In some embodiments, the screen control system operated by the controller sends protocol instructions conforming to a modbus (a serial communication protocol) based protocol specification to obtain information such as the current state and height of the curled screen provided by the monitoring component.

The controller judges whether the current curled screen is at a position of a relative zero point according to the height of the curled screen and the state information, namely, judges whether the current screen state is an 'offset waiting' state.

If the current curled screen does not reach the position of the relative zero point, judging whether the difference value between the time for informing the curled screen to rise to the relative zero point and the current time exceeds a preset time difference or not;

if the difference value between the time for informing the curled screen to rise to the relative zero point and the current time does not exceed the preset time difference, continuously judging whether the current curled screen is at the position of the relative zero point;

And if the difference value between the time for notifying the curled screen to rise to the relative zero point and the current time exceeds the preset time difference, indicating that the detection is overtime, and sending out an alarm prompt.

In some embodiments, the alarm prompt may be to control the fault indicator light to illuminate; the alarm prompt information can also be displayed on the curled screen, and the prompt information comprises abnormal information; the alarm prompt can also be voice broadcast alarm prompt information, and the alarm prompt method of the embodiment of the application is not limited to the three conditions.

And if the current curled screen reaches the position of the relative zero point, controlling the curled screen to rise according to a preset curve, and playing the preset image by the graphic image service according to the preset curve.

In some embodiments, as shown in FIG. 10, the graphical image service gathers layers (layers) drawn by different applications, synthesizes an image (bitmap), and sends the synthesized image to the projection component to cause the projection component to project the image onto a curled screen.

In some embodiments, the predetermined speed profile is a profile of time versus height of the curled screen, and the predetermined height profile is a profile of time versus height of the predetermined image. The curve of time and the height of the curled screen and the curve of time and the height of the preset image display can be the same or different.

In some embodiments, the preset speed profile uses the default ascent profile parameters of the display device at the factory, as shown in route 1 of fig. 11. 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. There are two main aging problems at present, one is that the screen television gradually ages, the rotation speed is reduced, the screen is lifted longer than before, and the screen television is shown as a route 2 in fig. 10; the second is that the screen ages and the screen rises to a lower or higher level than the actual level, as shown by the path 3 of fig. 10.

In order to accommodate these differences, unified services are provided for users in different seasons throughout the country, and software is required to adaptively adjust gain parameters according to environments so as to ensure consistency of rising curves and consistency of rising services. Meanwhile, the method ensures that the total rising time of the machine is the same no matter where the machine is, and the total rising time of the machine is the same no matter which season the machine is in, so that a more stable software and hardware structure is provided for users.

The main technical means of the embodiment of the application is to prepare a set of ascending curve database. The curve formula is real-time height h=hmax (math.cos ((t/tmax+1) ×math.pi)/2.0 f) +0.5 f); wherein Hmax is the total height of the screen rising, t is the current time, and Tmax is the total duration of the screen rising.

The actual height and the rising time of each rising are used as the basis and stored in a historical database to be used as the reference basis for the next starting.

The specific implementation method is as follows:

1. in interface design, an interface is designed to increase the screen according to the parameters (the current rising height, total time is used as the parameters to be transmitted to the screen end).

2. Each time the power-on machine starts, the power-on parameters (for example, the rising time, the total duration and the like are reversely deduced according to the real-time height and the curve formula).

3. Because ageing and temperature and humidity are slowly influenced, nearly 10 times of starting can be taken as the basis for calculating the initial speed, the height and the acceleration of the starting.

4. The user interface display system fits a new rising curve according to the calculated parameters. The control screen displays an image rising. And simultaneously, a serial port command is sent to the monitoring assembly to synchronously rise.

5. When the screen rises to the highest point, the parameters of the current startup are calculated into the rising curve database again for the next startup.

In some embodiments, in the process of rising the curled screen according to the preset speed curve and projecting the preset image according to the preset height curve, if no change in the height of the curled screen is detected within the preset time, stopping projecting the preset image and rising the curled screen;

in some embodiments, in the process of rising the curled screen according to the preset speed curve and projecting the preset image according to the preset height curve, if the monitoring component is received to send abnormal state information, stopping projecting the preset image and stopping rising the curled screen;

in the present application, the height of the curled screen specifically refers to the distance of the highest point of the curled screen from the bottom (absolute zero) of the curled screen.

In some embodiments, a method of calculating a curled screen height includes:

the controller acquires the rotation number of the driving assembly through the monitoring assembly;

the screen display calculating service operated by the controller calculates the height of the current curled screen according to the rotation number of the driving component, and the specific formula is as follows:

r2＝r1+xh

wherein H is the height of the current curled screen, r1 is the inner diameter of the scroll, H is the thickness of the curled screen, x is the current number of turns, and r2 is the current maximum radius.

When the height of the curled screen is unchanged within the preset time, the screen is clamped. In some embodiments, the scrolling screen is controlled to enter a reset state such that the scrolling screen is raised again according to a preset speed profile after returning to a relative zero point, and the projection assembly projects the preset image again according to a preset height profile. In this process, a graph of time versus curl screen height is shown in fig. 12.

In some embodiments, the reset state refers to the normal power-on process being re-entered after the curled screen is reduced to an absolute zero.

In some embodiments, as shown in fig. 13, when the screen control system polls the monitoring component for sending instructions, the control graphics image service stops sending images to the projection component after the current state, height and anomaly information of the curled screen are obtained; and controlling the curled screen to enter a reset (reset) state, and when the curled screen is lowered to an absolute zero point and then raised to a relative zero point, sending a screen raising instruction by the screen control system, controlling the curled screen to rise according to a preset speed curve, and simultaneously informing a graphic image service to send an image to a projection component according to the preset curve to be projected on the curled screen. In the process of rising the curled screen again, the screen control system still needs to poll and send instructions to the monitoring component to acquire the current state, the height and other information of the curled screen. The rising height of the curled screen and the display height of the image are kept in a synchronized state. When the curled screen rises to the highest point, the monitoring component feeds back the state to the screen control system, and the curled screen rises completely.

In some embodiments, the step of maintaining the synchronous state of the rising height of the curled screen and the display height of the image specifically includes:

the height of the current curled screen is acquired in real time and compared with the display height of the image. If the height of the current curled screen is lower than the display height of the image, cutting the image into the same size as the height of the curled screen, and blackening the non-curled screen area; if the height of the current curled screen is not lower than the display height of the image, continuously rising the curled screen and displaying the image according to a preset curve.

In other embodiments, while the curl screen is being raised according to the preset speed profile and the preset image is being projected according to the preset height profile, if no change in the curl screen height is detected within the preset time, the projection of the preset image and the raising of the curl screen are paused;

in other embodiments, if the monitoring component sends abnormal state information during the process of rising the curled screen and projecting the preset image according to the preset curve, suspending the projection of the preset image and rising the curled screen;

after suspending the projection of the preset image and raising the curled screen, controlling the projection component to project a user interface on the curled screen, wherein the user interface comprises abnormal information prompt information.

In some embodiments, the anomaly information prompt includes an anomaly information prompt text and an anomaly information prompt box. The abnormal information prompt box has a certain height, and the height can be set to be a preset height. The step of controlling the projection assembly to project the user interface comprises:

determining an effective display area and a non-effective display area of the user interface according to the current curled screen height;

black out the non-effective display area;

judging whether the current height of the curled screen exceeds a preset height;

if the height of the current curled screen does not exceed the preset height, setting the abnormal information prompt text at the preset position of the effective display area to obtain a processed user interface;

if the current height of the curled screen exceeds the preset height, setting an abnormal information prompt box at a preset position of an effective display area to obtain a processed user interface;

the projection assembly is controlled to project the processed user interface onto the curled screen.

When the current curl screen height does not exceed the preset height, the user interface displays an abnormal information prompt text, as shown in fig. 14. When the current curl screen height exceeds the preset height, the user interface displays an abnormal information prompt box, which can be centrally displayed as shown in fig. 15. The abnormal information prompt text or the abnormal information prompt box can display an abnormal state and a fault code of the abnormal state, and further comprises a 'continue' control 141, a 'shutdown' control 142 and a 'restart' control 143. Wherein, when the user selects the "continue" control 141, the curled screen continues to perform the rising operation; when the user selects the "shutdown" control 142, the curled screen performs a lowering operation and after the curled screen is lowered to an absolute zero, the display device is powered off; when the user selects the "restart" control 143, the curled screen performs a lowering operation and re-enters the normal startup procedure after the curled screen falls to the absolute zero.

In some embodiments, the fault code is as shown in table 1.

TABLE 1

Cause of failure	Fault code
		Left and right lifting motor unbalance	ERR_Imbalanct
Left lift motor imbalance	ERR_LMovercurrent
		Unbalanced right lifting motor	ERR_RMovercurrent
Unbalance of reel lifting motor	ERR_CMovercurrent

In some embodiments, after the user views the fault code from the anomaly information prompt box and knows the cause of the fault, the fault is cleared, for example: in the process of rising the curled screen, it is detected that a foreign object moves into the rising range of the curled screen, at this time, the rising of the curled screen is stopped, an abnormal information prompt box is displayed, after the foreign object moves out of the rising range of the curled screen, the user selects the "continue" control 141, and issues an instruction to continue rising the curled screen.

The controller responds to the instruction of continuously rising the curled screen input by the user, and re-formulates a speed curve according to the current curled screen height, the total height of the curled screen, the rising time of the curled screen and the rising total time of the curled screen; and controlling the curled screen to rise according to the redevelophed speed curve; meanwhile, the projection component is controlled to project a preset image on the curled screen according to the speed curve.

In some embodiments, the speed profile formula may be expressed as:

Real-time height h=hmax (math.cos ((t/tmax+1) math.pi)/2.0 f) +0.5 f)

Wherein Hmax is the total height of the screen rising, t is the current time, and Tmax is the total duration of the screen rising.

The same curve formula can be used for the scrolling screen rising and the image display. The current curve state is determined by the incoming vertex heights Hmax and Tmax.

The speed curve is re-drawn as follows:

when the screen is abnormally stopped, the screen is continuously lifted by fault recovery, the time T2=T-T1 of the left lifting can be obtained according to the time T1 which is lifted before the fault, and the time H2=H-H1 of the left lifting can be obtained according to the time H1 which is lifted before the fault, so that the total lifting height H is unchanged

The operation curve formula during the recovery is calculated as follows:

h＝H2*(Math.cos((t/T2+1)*Math.PI)/2.0f)+0.5f)。

in the above process, the time versus height curve of the curled screen is shown in fig. 16.

In some embodiments, as shown in fig. 17, after the screen control system polls the monitoring component for a command to acquire the current state, height and anomaly information of the curled screen, the graphic image service is controlled to suspend sending the image to the projection component; controlling the graphic image service to send an abnormal information prompt box to the projection component; after the fault is removed, the user sends out an instruction for continuously lifting the curled screen; the screen control system can send the re-formulated speed curve and the screen rising instruction to the driving component, the driving component controls the rising of the curled screen according to the re-formulated rising curve, and meanwhile, the graphic image service is informed to send the image to the projection component to be projected on the curled screen according to the re-formulated rising curve. In the process of continuously rising the curled screen, the screen control system still needs to poll and send instructions to the monitoring component to acquire the current state, the height and other information of the curled screen. The rising height of the curled screen and the display height of the image are kept in a synchronized state. When the curled screen rises to the highest point, the monitoring component feeds back the state to the screen control system, and the curled screen rises completely.

In some embodiments, the above method is also applicable to the case that the curled screen is lowered when the machine is turned off, and will not be described herein.

During the rising or falling of the curled screen, an unexpected power failure may occur, so that the curled screen is stopped at a position other than the absolute zero point. When the device is restarted, the controller responds to a starting instruction input by a user, detects that the current curled screen is not at an absolute zero position, and in some embodiments, controls the curled screen to enter a reset state so as to enable the curled screen to rise again according to a preset speed curve after returning to the relative zero position, and the projection component projects a preset image again according to a preset height curve. In other embodiments, the rising curve is formulated based on the current curled screen height and the overall curled screen height; the time for rising to the current curled screen height can be determined according to the current curled screen height and a preset curve, the time corresponding to the current height is subtracted from the total rising time, the time required for rising to the highest point from the current position can be obtained, and the speed curve and the height curve can be drawn again. Controlling the curled screen to rise according to the redevelopred speed curve; the projection component is controlled to project a preset image on the curled screen according to the redefined height curve.

In the process of rising the curled screen again, the screen control system still needs to poll and send instructions to the monitoring component to acquire the current state, the height and other information of the curled screen. The rising height of the curled screen and the display height of the image are kept in a synchronized state. When the curled screen rises to the highest point, the monitoring component feeds back the state to the screen control system, and the curled screen rises completely.

In some embodiments, the curled screen may be an OLED curled screen, unlike the above embodiments, the projection component is not required to project the preset image onto the curled screen, but the preset image is displayed directly through the curled screen.

In the above embodiment, when it is detected that the abnormal situation of the curled screen occurs and the screen cannot be continuously expanded or curled in the process of expanding or curling the curled screen according to the preset speed curve and displaying the preset image according to the preset height curve, the curled screen may be controlled to enter the reset state so as to be expanded or curled again and display the preset image after returning to the relative zero point, or after the abnormal situation is solved, the curled screen is expanded or curled according to the redeveloped speed curve and the preset image is displayed according to the redeveloped height curve. Therefore, the user can timely identify and solve the abnormal situation of the curled screen in the moving process, and the user experience is improved.

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 application has been described in detail with reference to the foregoing embodiments, it will 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 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 (8)

1. A display device, characterized by comprising:

a rollable screen;

A driving assembly for driving the curled screen to be unfolded or curled;

a monitoring component for monitoring the current state and height of the screen;

a controller for performing:

in the process of expanding or curling the screen according to a preset speed curve, abnormal screen operation state information sent by a monitoring component is received, and an abnormal prompt is sent to a user;

and responding to an instruction of continuing to unfold or curl the screen input by a user, controlling the screen to enter a reset state so as to unfold or curl the screen again according to the preset speed curve after the screen returns to a relative zero point, and displaying a preset image again according to the preset height curve by the screen.

2. The display device of claim 1, wherein the reset state is a normal power-on procedure re-entered after the curled screen is reduced to an absolute zero.

3. The display device of claim 1, wherein the control graphics image service stops sending images to the screen while receiving screen operation abnormality status information sent by the monitoring component and sending abnormality cues to the user.

4. A display device according to claim 3, wherein the controller executes instructions for continuing to unwind or curl the screen in response to user input, controls the screen to enter a reset state to unwind or curl the screen again according to the preset speed profile after returning to a relative zero point, the screen again displaying a preset image according to the preset height profile, and is further configured to:

After receiving the current state, the height and the abnormal information of the screen, which are acquired by the monitoring component, the monitoring component controls the graphic image service to stop sending the image to the screen;

controlling the screen to enter a reset state, when the screen is lowered to a relative zero point, sending a screen lifting instruction, controlling the screen to lift according to a preset speed curve, and simultaneously informing a graphic image service to send an image to the screen according to the preset curve;

and continuously acquiring the current state and the height information of the screen in the process of re-rising the screen so as to control the rising height of the screen and the display height of the image to keep a synchronous state.

5. The display device according to claim 4, wherein the controller performing control of the rising height of the screen and the display height of the image to maintain a synchronous state is further configured to:

acquiring the height of a current screen in real time, and comparing the height of the screen with the display height of an image;

if the height of the current screen is lower than the display height of the image, cutting the image into the same size as the height of the curled screen, and blackening the non-curled screen area;

if the height of the current screen is not lower than the display height of the image, continuously rising the curled screen and displaying the image according to a preset curve.

6. A display device, characterized by comprising:

a rollable screen;

a driving assembly for driving the curled screen to be unfolded or curled;

a monitoring assembly for monitoring the height of the curled screen during the unwinding or curling of the curled screen;

a controller for performing:

in the process of expanding or curling the curled screen according to a preset speed curve and displaying a preset image according to a preset height curve, if the fact that the screen height does not change within a preset time is detected, the expanding or curling of the curled screen and the displaying of the preset image are suspended;

and controlling the curled screen to display a user interface, wherein the user interface comprises abnormal information prompt information.

7. The display device of claim 6, wherein the controller performs controlling the curled screen display user interface by:

determining an effective display area and a non-effective display area of the user interface according to the current screen height;

the non-effective display area is blacked out, and abnormal information prompt information is set at a preset position of the effective display area, so that a processed user interface is obtained;

and controlling a screen to display the processed user interface.

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

responding to an instruction input by a user to continue unfolding or curling the screen, and re-drafting a speed curve and a height curve according to the current screen height, the total screen height, the screen rising time and the curled screen rising total time;

controlling a curled screen to unwind or curl the curled screen according to a redevelopred speed curve;

and controlling the curled screen to display a preset image according to the redevelopment height curve.