CN113938727B

CN113938727B - Display equipment

Info

Publication number: CN113938727B
Application number: CN202110297021.4A
Authority: CN
Inventors: 贾亚洲; 吴汉勇; 马会会; 司洪龙; 甄凌云; 刘清友; 王之奎; 李晓平; 陈许
Original assignee: Hisense Visual Technology Co Ltd
Current assignee: Hisense Visual Technology Co Ltd
Priority date: 2020-06-29
Filing date: 2021-03-19
Publication date: 2023-05-05
Anticipated expiration: 2041-03-19
Also published as: CN113938729A; CN113938725B; CN113938725A; CN114125518A; CN114125518B; CN113938726A; CN113938728A; CN113938727A; CN113938730A; CN113938726B; CN113938730B

Abstract

The application discloses display device to make the image that the screen expansion or curls in-process show match with the effective display area of screen, the image of showing can rise along with the screen rises, avoids the image to spill outside the screen, promotes user experience. The display device includes: a projection assembly; a screen; a drive assembly; the monitoring component is used for monitoring state information in the process of expanding or curling the screen and feeding back the state information of the screen to the controller; a controller for performing: in the process that the screen is unfolded or curled according to a preset speed curve and the projection component projects a preset image according to a preset height curve, determining the height of the current screen according to the state information of the screen; if the height of the current screen is lower than the display height of the preset image, dividing the preset image into a first image and a second image according to the height of the current screen, wherein the height of the second image is not greater than the height of the current screen; the projection component is controlled to project a preset image so that the screen only displays a second image.

Description

Display equipment

The present application claims priority from chinese patent application filed at 29 of month 06 in 2020, chinese patent office, application number 202010603016.7, title of invention "a 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, when the screen is lifted to the highest point from the television cabinet, the image of the optical machine can be totally projected to the global position during starting, and the screen is not lifted to the highest point at the moment, so that the image of the optical machine leaks out of the screen, and if the background of the projection area of the optical machine outside the screen is not white or has a smooth surface, the color of the projected image is wrong or has a dazzling feel, so that the user experience is poor.

Disclosure of Invention

The embodiment of the application provides a display device, so that an image displayed in the process of expanding or curling a screen is matched with an effective display area of the screen, the displayed image can rise along with the rising of the screen, the image is prevented from leaking out of the screen, and the user experience is improved.

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

a projection assembly;

a screen configured to be curlable up and down;

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

the monitoring component is used for monitoring state information in the process of unfolding or curling the screen and feeding back the state information of the screen to the controller;

a controller for performing:

determining the height of the current screen according to the state information of the screen in the process that the screen is unfolded or curled according to a preset speed curve and the projection component projects a preset image according to a preset height curve;

if the height of the current screen is lower than the display height of the preset image, dividing the preset image into a first image and a second image according to the height of the current screen, wherein the height of the second image is not greater than the height of the current screen;

and controlling the projection assembly to project a preset image so that the screen only displays the second image.

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

if the height of the screen is not lower than the display height of the preset image, continuing to expand or curl the screen according to the preset speed curve and projecting the preset image according to the preset height curve.

In some embodiments, the controller performs controlling the projection assembly to project a preset image such that the screen displays only the second image in the following manner:

setting a floating layer window loaded with a black interface on the upper layer of the first image, or setting the pixel point of the first image to be black to obtain a processed preset image;

and controlling the projection assembly to project the processed preset image.

In some embodiments, the status information of the screen includes a number of rotations of the driving assembly or image information of the screen, and the controller performs determining the height of the current screen according to the status information of the screen in the following manner:

calculating the height of the current screen according to the rotation number of the driving assembly;

or determining the height of the current screen according to the image information of the screen.

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

a projection assembly;

a screen configured to be curlable up and down;

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

A controller for performing:

if the height of the current screen is lower than the display height of the preset image, cutting the preset image into a first image and a second image according to the height of the current screen, wherein the height of the first image is not greater than the height of the current screen;

and performing coordinate conversion processing on the first image so that the screen displays the first image.

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

In some embodiments, the status information of the screen includes a number of rotations of the driving assembly, and the controller performs determining the height of the current screen according to the status information of the screen in the following manner:

and calculating the height of the current screen according to the rotation number of the driving assembly.

In some embodiments, the status information of the screen includes image information of the screen, and the controller performs determining the height of the current screen according to the status information of the screen in the following manner:

And determining the height of the current screen according to the image information of the screen.

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

a projection assembly;

a screen configured to be curlable up and down;

the driving assembly is used for driving the screen to be unfolded;

the monitoring component is used for monitoring state information in the screen unfolding process and feeding back the state information of the screen to the controller, and the state information is used for determining the screen height;

a controller for performing:

shielding keys and sounds in the process that the screen is unfolded according to a preset speed curve;

when the screen height is detected to reach the preset height, controlling the projection assembly to project a preset image according to a preset height curve and removing keys and sound shielding;

if the height of the screen is lower than the display height of the preset image, dividing the preset image into a first image and a second image according to the height of the current screen, wherein the height of the second image is not greater than the height of the current screen;

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

a projection assembly;

a screen configured to be curlable up and down;

The driving assembly is used for driving the screen to be unfolded;

a controller for performing:

In the above embodiment, the display device notifies the screen to expand or curl and prepare to display the preset image, determines the height of the screen according to the state information of the screen, if the height of the screen is lower than the display height of the preset image, divides or cuts the current preset image according to the height of the screen, so that the displayed image is matched with the effective display area of the screen, the displayed image rises along with the rising of the screen, the image is prevented from leaking out of the screen, 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 an image display schematic;

FIG. 10 illustrates a preset speed profile;

FIG. 11 is a schematic view schematically showing a state of a lifting screen during lifting;

FIG. 12A illustrates a coordinate system diagram;

FIG. 12B illustrates a schematic diagram of a display area in coordinates;

FIG. 12C illustrates a schematic diagram of a display image in coordinates;

FIG. 13 schematically illustrates a schematic of a display image;

FIG. 14A illustrates a processed image;

FIG. 14B illustrates another processed image;

fig. 15 is a schematic view schematically showing a state during the lifting of another lifting screen;

FIG. 16A illustrates a processed image projected during the ascent of a lift screen;

FIG. 16B illustrates a processed image projected during lowering of a lift screen;

FIG. 17A illustrates a display image cropping result in a coordinate system;

FIG. 17B schematically illustrates a first image coordinate conversion;

FIG. 17C illustrates yet another processed image;

FIG. 18A illustrates another processed image projected during the ascent of a lift screen;

FIG. 18B illustrates another processed image projected during lowering of the lift screen;

fig. 19 illustrates a user interface schematic.

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 foregoing 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 "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 that are expressly listed or inherent to such product or apparatus, 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 component 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 component 260 includes a display screen component for presenting a picture, and a driving component for driving an image display, a component for receiving an image signal from the controller output, displaying video content, image content, and a menu manipulation interface, and a user manipulation UI interface, etc.

In some embodiments, the display assembly 260 may specifically further include a projection assembly and a lift screen that receives the projected image of the projection assembly.

In some embodiments, the display assembly 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.

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 user-acceptable form. 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 (abbreviated as "application layer"), an application framework layer (Application Framework) layer (abbreviated as "framework layer"), a An Zhuoyun row (Android run) and a system library layer (abbreviated as "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 the related art, the projection component projects the image to the global position in the starting process, and the screen does not rise to the highest point at this time, so that the image of the optical engine leaks out of the screen, and if the background of the projection area of the optical engine outside the screen is not white or the surface is smooth, the color of the projected image is error or dazzling, so that the user experience is poor.

To solve the above problems, embodiments of the present application provide a workflow of a display device.

In some embodiments, the screen curl and expand in the present application may be the screen rise from bottom to top or 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 in the present application.

Taking the example of the screen rising in the starting process, the user can power up the projection component and the controller by pressing the starting key of the control device or pressing the starting key on the display device. After the controller is powered on, the sliding cover is controlled to be opened, and the 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 screen in a curled state when the screen is in a rolled state, and dust is prevented from falling on the surface of the screen. Meanwhile, the controller runs a screen control system and a startup display 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 screen is acquired, and the startup display service is ready to play 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.

In the process of ascending the screen, the controller polls and sends an instruction to the monitoring component, so that the current state, the height and other information of the screen provided by the monitoring component are obtained. And the controller judges whether the current screen is at the position of the relative zero point according to the height and state information of the screen.

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

if the difference value between the time when the notification screen rises to the relative zero point and the current time does not exceed the preset time difference, continuously judging whether the current screen is at the position of the relative zero point;

if the difference value between the time when the notification screen rises to the relative zero point and the current time exceeds the preset time difference, the detection is overtime, and an alarm prompt is sent out.

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 a 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 above three conditions.

If the current screen reaches the position of the relative zero point, the control screen rises according to a preset speed curve, and the startup display service displays a preset image according to a preset height curve.

In some embodiments, as shown in FIG. 9, the graphical image service gathers layers (layers) drawn by different applications, synthesizes an image (bitmap), and sends the synthesized image to the projection component so that the projection component projects the image onto a screen.

In some embodiments, the predetermined speed profile is a profile of time versus screen height, and the predetermined height profile is a profile of time versus display height of the predetermined image. The preset height profile and the preset speed profile may be consistent with each other from a relative zero point to a highest point.

In some embodiments, the control screen may be raised according to a preset speed profile and the startup display service may be performed simultaneously or sequentially with playing the preset image according to a preset height profile.

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. 10. 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: real-time height h=hmax ^＊ (Math.cos((t/Tmax+1) ^＊ Math.PI)/2.0f)+0.5f)；

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.

After the control screen ascends according to a preset speed curve and the startup display service broadcasts and displays a preset image according to a preset height curve, the height of the screen is obtained, and in the application, the height of the screen specifically refers to the distance between the highest point of the screen and the bottom (absolute zero point) of the screen.

In some embodiments, the step of obtaining the height of the screen comprises:

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

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

r2＝r1+xh

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

In some embodiments, the step of obtaining the height of the screen comprises:

the controller acquires the image information of the current screen through the image collector, and measures the height of the screen according to the image information to obtain the height of the current screen.

Judging whether the height of the current screen is lower than the display height of a preset image (such as a preset image);

the height of the current screen is obtained according to the information fed back by the monitoring component, and the display height of the preset image can be obtained according to a preset height curve and the current time, namely, the display height of the preset image can be obtained by knowing the preset height curve and the time.

In some embodiments, as shown in fig. 11, if the height h1 of the current screen is lower than the display height h2 of the preset image, the current preset image is divided into a first image and a second image according to the height of the screen;

there are various implementations of dividing the current preset image into a first image and a second image according to the height of the screen.

For example, the controller may generate the display area according to the height of the screen and the width of the screen; reading a first coordinate corresponding to the display area; the image corresponding to the first coordinate in the preset image is a second image, and the rest images are first images. In the technical scheme shown in the embodiment of the application, the first coordinate system is established by taking the lower left corner of the screen as the origin. And establishing a second coordinate system by taking the lower left corner of the preset image as an origin. A schematic diagram of the coordinate system is exemplarily shown in fig. 12A. Wherein, the coordinate system 1 is a first coordinate system, and the coordinate system 2 is a second coordinate system.

In some embodiments, the screen is 1920mm in size as it rises ^＊ 1080mm, can cut the screen into 1920 correspondingly ^＊ 1080 display tiles, each display tile having a coordinate value in the first coordinate system that is known. In the process of moving the screen upwards, at a certain moment, the controller calculates that the height of the screen is 678mm, the corresponding display area can be referred to as 12B, a schematic diagram of the display area in coordinates is exemplarily shown in fig. 12B, and it can be seen that the first coordinates corresponding to the display area are: (0, 0) (0, 1.) (0, 1920); (1, 0) (1, 1.) (1, 1920); ...... (678,0) (678,1)...... (678, 1920). The image corresponding to the first coordinate in the preset image is a second image, and the rest images are first images. Referring specifically to fig. 12C, a schematic diagram of a preset image in coordinates is schematically shown in fig. 12C.

For another example, an image corresponding to a screen height from the bottom end in the preset image is a second image, and the rest of images are first images.

In some embodiments, the screen is 1920mm in size as it rises ^＊ 1080mm. In the process of upward movement of the screen, at a certain moment, the controller calculates that the height of the screen is 678mm, the image corresponding to the preset image, which is 678mm away from the bottom end, is a second image, and the rest images are first images. Referring specifically to fig. 13, fig. 13 is a schematic diagram illustrating a preset image according to a feasible embodiment.

Black shading is carried out on the first image, and a processed image is obtained;

there are various implementations of the black out process for the first image.

For example, a floating layer window may be disposed on the upper layer of the first image, where the size of the floating layer window is equal to the size of the first image, and the floating layer window is used to load the black interface, and the resulting processed image may be referred to as fig. 14A, where a processed image is exemplarily shown in fig. 14A.

For another example, the color of each pixel in the first image may be set to black, and the resulting processed image may be referred to as fig. 14B, where a processed image is exemplarily shown in fig. 14B.

The method of performing the black out process on the first image may be any of the above methods, but is not limited to the above method.

After the graphic image service divides and blackens the preset image, the processed image is sent to the projection component, so that the projection component projects the processed image on a screen.

In some embodiments, as shown in fig. 15, if the height h1 of the current screen is not lower than the display height h2 of the preset image, the screen is continuously raised according to the preset speed profile and the preset image is projected according to the preset height profile.

In the above embodiment, the projected processed image can be referred to as fig. 16A during the screen rising.

In some embodiments, the method provided in the embodiments of the present application is also applicable to a shutdown process, and the specific process is not described in detail. During the screen drop, the projected processed image may be referred to in fig. 16B.

In other embodiments, as shown in fig. 11, if the height h1 of the current screen is lower than the display height h2 of the preset image, the current preset image is cropped into a first image and a second image according to the height of the screen, and the projection assembly is controlled to project the first image on the current screen;

in some embodiments, the current preset image is cropped into a first image and a second image according to the height of the screen, and the projection component is controlled to project the first image on the current screen, specifically including:

and transversely cutting the preset image at the position with the height from the top end being the height of the screen to obtain a first image and a second image. In the technical scheme shown in the embodiment of the application, the first coordinate system is established by taking the lower left corner of the screen as the origin. And establishing a second coordinate system by taking the lower left corner of the preset image as an origin. As shown in fig. 12A, the coordinate system 1 is a first coordinate system, and the coordinate system 2 is a second coordinate system. And moving the first image to the lower part of the laser projection area after coordinate conversion, wherein the upper part of the laser projection area can be replaced by a full black image or full black pixels, and combining the full black image and the first image after coordinate conversion into a processed image by the graphic image service, and displaying the processed image on the current screen.

In some embodiments, the coordinate conversion is performed by subtracting the difference between the highest point of the screen and the current screen height from the ordinate of the first image, and the abscissa is unchanged.

For example: when the screen is lifted, the size of the screen is 1920mm ^＊ 1080mm, can cut the screen into 1920 correspondingly ^＊ 1080 display tiles, each display tile having a coordinate value in the first coordinate system that is known. Screen panelIn the process of moving the screen upwards, the controller calculates that the height of the screen is 678mm at a certain moment, and the corresponding display area can be referred to as 12A. And transversely cutting the preset image at the position with the height of 678mm from the top end to obtain a first image and a second image. As shown in fig. 17A, the coordinates of the current first image are (1080,0) (1080,1.) (1080, 1920); (1079,0) (1079,1) the term "(1079, 1920); ....and (402,0) (402,1))..the (402, 1920); the difference between the highest point of the screen and the current screen height is 402, and the coordinates of the first image are (402,0) (402,1) after coordinate conversion, that is, the ordinate of the first image is subtracted by 402, and the coordinates of the first image are (402, 1920); (401,0) (401,1) the term "(401, 1920); ....(0, 0) (0, 1))..(0, 1920), as shown in fig. 17B. The upper portion of the laser projection area may be replaced by a full black image or full black pixels, and the graphic image service combines the full black image with the coordinate-converted first image into a processed image, as shown in fig. 17C.

The graphic image service cuts out, converts coordinates and blackens the preset image, and then sends the processed image to the projection component so that the projection component projects the processed image on a screen.

In the above embodiment, the projected image during the screen rising can be referred to as fig. 18A.

In some embodiments, the method provided in the embodiments of the present application is also applicable to a shutdown process, and the specific process is not repeated. During the screen drop, the projected image may be referred to as fig. 18B.

In the above embodiment, the projection area of the laser component is unchanged, the part leaking out of the screen is blacked out, and only the second image which is not blacked out can be seen on the screen; or alternatively, the upper part of the image is projected onto the screen, and the rest is blacked out. The above manner can be implemented without changing hardware, only modifying software, and the upper layer application does not need to be changed.

In other embodiments, after the current screen height is obtained, the preset image is cut out to be the same as the current screen height, and only the current screen area is projected when the projection component projects the image. The mode only has laser projection at the screen, no projection exists outside the screen, the design constraint is more met, light cannot leak outside the screen, but hardware equipment such as a projection component and the like is required to be changed, and the development period is long.

In some embodiments, the user presses a start key of the control device or presses a start key on the display device, so that the projection assembly and the controller are powered on, the controller notifies the screen to ascend, the system shields sound and keys, the projection assembly does not project images, the start animation program circularly detects the current ascending state of the screen by reading GPIO and the like, and after the screen ascends to the highest point, the start animation program notifies the projection assembly to project images, releases the key shielding, releases the sound shielding and enters the main system.

In some embodiments, the user powers up the projection assembly and the controller by pressing a power-on key of the control device or pressing a power-on key on the display device. The controller notifies the screen to rise while masking the key and sound. During the ascent of the front screen, the projection assembly does not project an image, but the image is still playing in the background. The purpose of shielding the keys and the sounds is to prevent the sounds attached to the images from being played or the users from pressing the keys on the control device by mistake to trigger the corresponding functions, so that the users can mistakenly cause errors to occur to the display equipment in operation, the starting-up process is delayed, and the user experience is poor.

When the screen is detected to rise to a preset height, controlling the projection assembly to project a preset image and releasing the key and the sound shielding; wherein the preset height may be half of the total height of the screen.

In some embodiments, when it is detected that the screen is raised to a preset height, the screen displays a prompt message, the prompt screen is being activated, any key is pressed to lighten the screen "and the key mask is released, at this time, only the font is colored, and the other areas are black, as shown in fig. 19. If the fact that the user displays the prompt information is detected, the key is triggered manually, the action of lighting the screen is triggered, and the projection assembly is controlled to project a preset image and remove sound shielding. The preset image rises according to a preset speed curve; acquiring the height of a screen in real time, and if the height of the screen is lower than the display height of a preset image, processing the preset image according to the height of the screen so that the display height of the preset image is matched with the rising height of the screen; if the fact that the user does not detect that the user displays the prompt information is achieved, the key is triggered manually, and after the screen rises to the highest point, the projection assembly is controlled to project a preset image and the sound shielding is relieved.

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

1. A display device, characterized by comprising:

a projection assembly;

a screen configured to be curlable up and down;

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

the monitoring component is used for monitoring the state information and the foreign matter information in the process of unfolding or curling the screen and feeding back the state information and the foreign matter information of the screen to the controller;

a controller for performing:

determining the height of a current screen according to state information of the screen and suspending the screen unfolding process according to foreign matter information in the process that the screen is unfolded or curled according to a preset speed curve and the projection component projects a preset image according to a preset height curve, wherein the height and time of at least one unfolding or curling of the screen are stored in a historical database, and the preset speed curve is determined according to the height and time in the historical database in the later unfolding or coiling process of the screen;

controlling the projection assembly to project a preset image so that the screen only displays the second image;

Judging whether the current screen is at the position of the relative zero point according to the height and state information of the screen; if the current screen does not reach the position of the relative zero point, judging whether the difference value between the time for informing the screen to rise to the relative zero point and the current time exceeds a preset time difference; and if the difference value between the time when the notification screen rises to the relative zero point and the current time exceeds the preset time difference, sending out an alarm prompt.

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

3. The display device according to claim 1, wherein the controller performs control of the projection assembly to project a preset image such that the screen displays only the second image by:

and controlling the projection assembly to project the processed preset image.

4. The display apparatus according to claim 1, wherein the status information of the screen includes a number of rotations of the driving assembly or image information of the screen, and the controller performs the determination of the height of the current screen according to the status information of the screen by:

5. A display device, characterized by comprising:

a projection assembly;

a screen configured to be curlable up and down;

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

a controller for performing:

performing coordinate conversion processing on the first image so that the screen displays the first image;

6. The display device of claim 5, wherein the controller is further configured to perform:

7. The display device of claim 5, wherein the status information of the screen includes a number of rotations of the driving assembly, and wherein the controller performs determining a height of a current screen according to the status information of the screen by:

8. The display device according to claim 5, wherein the status information of the screen includes image information of the screen, and the controller performs the determination of the height of the current screen from the status information of the screen by:

9. A display device, characterized by comprising:

a projection assembly;

a screen configured to be curlable up and down;

the driving assembly is used for driving the screen to be unfolded;

the monitoring component is used for monitoring state information and foreign matter information in the screen unfolding process, feeding back the state information and the foreign matter information of the screen to the controller, wherein the state information is used for determining the height of the screen, and the foreign matter information is used for judging whether to pause the screen unfolding;

a controller for performing:

when the screen height is detected to reach the preset height, controlling the projection assembly to project prompt information and remove key shielding, and if a trigger instruction sent by a user is received after the prompt information is projected, controlling the projection assembly to project a preset image according to a preset height curve and remove sound shielding; if a trigger instruction sent by a user is not received after the prompt message is projected, controlling the projection assembly to project a preset image according to a preset height curve and removing sound shielding after the screen is completely unfolded;

10. A display device, characterized by comprising:

a projection assembly;

a screen configured to be curlable up and down;

the driving assembly is used for driving the screen to be unfolded;

A controller for performing: