WO2022001854A1 - 显示设备及投影组件校正方法 - Google Patents

显示设备及投影组件校正方法 Download PDF

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Publication number
WO2022001854A1
WO2022001854A1 PCT/CN2021/102289 CN2021102289W WO2022001854A1 WO 2022001854 A1 WO2022001854 A1 WO 2022001854A1 CN 2021102289 W CN2021102289 W CN 2021102289W WO 2022001854 A1 WO2022001854 A1 WO 2022001854A1
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WIPO (PCT)
Prior art keywords
screen
projection
area
image area
image
Prior art date
Application number
PCT/CN2021/102289
Other languages
English (en)
French (fr)
Inventor
贾亚洲
初德进
王秉清
吴汉勇
王之奎
刘清友
李晓平
陈许
甄凌云
马会会
司洪龙
于硕
张安祺
刘晋
Original Assignee
海信视像科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202110298436.3A external-priority patent/CN114125518B/zh
Application filed by 海信视像科技股份有限公司 filed Critical 海信视像科技股份有限公司
Priority to CN202180046274.2A priority Critical patent/CN116391357A/zh
Publication of WO2022001854A1 publication Critical patent/WO2022001854A1/zh

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/58—Projection screens collapsible, e.g. foldable; of variable area
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2380/00—Specific applications
    • G09G2380/02—Flexible displays

Definitions

  • the present application relates to the technical field of display devices, and in particular, to a display device and a method for calibrating projection components.
  • Laser TV is a TV product that uses a laser light source as a display light source and cooperates with projection display technology to form images. It is equipped with a special projection screen and can receive radio TV programs or Internet TV programs. In addition to the top-down unfolding screen, the laser TV also uses the bottom-up unfolding screen from the TV cabinet. The latter specifically sets the optical machine and the lifting screen in the TV cabinet. When the TV is turned on, the screen is removed from the TV cabinet. The middle slowly rises, and the image of the optical machine will hit the global position behind.
  • Some embodiments of the present application provide a display device, including: a screen configured to be rolled up and down; a projection assembly configured to project an image to the screen; a driving assembly configured to drive the screen to unfold or curl; monitoring a component configured to monitor the image of the projected image area of the projection component on the screen during the movement of the screen, and to feed back image information of the projected image area to the controller;
  • a controller configured to: when it is determined according to the image information and the information of the reference area that the projection image area is not in a forward projection state, calculate a projection area adjustment according to a deviation value between the projection image area and the reference area parameters, wherein, when the projected image area is in a forward projection state, the projected image area coincides with the reference area, and the deviation value includes a vertical deviation value and an angular deviation value; the parameters are adjusted according to the projection area, Adjusting the light emitting angle of the projection assembly so that the projected image area coincides with the reference area.
  • the controller is configured to: continuously capture a plurality of images of the screen, determine a change area on the screen according to the plurality of images of the screen, and determine the change area on the screen for the projected image area.
  • the controller is configured to: calculate a deviation value of the projected image area from the reference area according to the image information and the information of the reference area, where the deviation value is greater than or equal to the deviation
  • the threshold value it is determined that the projected image area is not in the forward projection state
  • the deviation value is smaller than the deviation threshold value, it is determined that the projected image area is in the front projection state.
  • the controller is configured to adjust the position and angle of the projection assembly.
  • the controller is configured to: divide the projected image area into a plurality of pixel units, and use an image algorithm to determine whether an abnormal pixel unit exists in the plurality of pixel units, wherein the abnormal pixel unit is A pixel unit deviating from a preset position; when it is determined that there is at least one abnormal pixel unit in the plurality of pixel units, it is determined that the projected image area is not in a flat state; when it is determined that there is no abnormal pixel unit in the plurality of pixel units, it is determined that the The projected image area is in a flat state.
  • the controller is configured to: when it is determined that the projected image area is not in a flat state, adjust the light exit angle of the projection assembly, so as to restore the position of the abnormal pixel unit to the predetermined level. set location.
  • Some embodiments of the present application provide a method for calibrating a projection component. The method is applied during the movement of the screen, including:
  • a projection area adjustment parameter is calculated according to the deviation value between the projected image area and the reference area, wherein the image The information is the information of the image of the projected image area projected on the screen by the projection component monitored by the monitoring component.
  • the projected image area is in a forward projection state, the projected image area coincides with the reference area, and the deviation value includes vertical Deviation value and angle deviation value; according to the projection area adjustment parameter, adjust the light exit angle of the projection component, so that the projection image area coincides with the reference area.
  • the specific step of determining whether the projection image area is in a front projection state according to the image information and the information of the reference area is: calculating the projection according to the image information and the information of the reference area The deviation value between the image area and the reference area, when the deviation value is greater than or equal to the deviation threshold value, it is determined that the projected image area is not in the forward projection state; when the deviation value is smaller than the deviation threshold value, it is determined that the The projected image area is in the forward projection state.
  • the method further includes: dividing the projected image area into a plurality of pixel units, and using an image algorithm to determine whether an abnormal pixel unit exists in the plurality of pixel units, wherein the abnormal pixel unit is a deviation from a predetermined pixel unit.
  • the method further includes: when it is determined that the projected image area is not in a flat state, adjusting the light exit angle of the projection component to restore the position of the abnormal pixel unit to the preset position .
  • FIG. 1 is a schematic diagram of an operation scenario between a display device and a control apparatus according to one or more embodiments of the present application;
  • FIG. 2 is a block diagram of a hardware configuration of a display device 200 according to one or more embodiments of the present application;
  • FIG. 3 is a block diagram of the hardware configuration of the control device 100 according to one or more embodiments of the present application;
  • FIG. 4 is a schematic diagram of software configuration in a display device 200 according to one or more embodiments of the present application.
  • 5A-5B are schematic structural diagrams of a curling laser device according to one or more embodiments of the present application.
  • 6-8 are schematic diagrams of components of a curling laser device according to one or more embodiments of the present application.
  • FIG. 9 is a schematic diagram of image projection according to one or more embodiments of the present application.
  • 10A-10B are schematic diagrams of software of a curling laser device according to one or more embodiments of the present application.
  • 11-13, 14A-14B, 15, 16A-16C, and 17 are schematic diagrams of image cropping according to one or more embodiments of the present application.
  • FIG. 18 is a schematic diagram of a display interface according to one or more embodiments of the present application.
  • 19-22 are schematic diagrams of screen states according to one or more embodiments of the present application.
  • 25-28 are schematic diagrams of projected images according to one or more embodiments of the present application.
  • 29 is a flowchart of a method for calibrating a projection assembly according to one or more embodiments of the present application.
  • 30-32 are schematic diagrams of velocity curves according to one or more embodiments of the present application.
  • FIG. 1 is a schematic diagram of an operation scenario between a display device and a control device according to one or more embodiments of the present application.
  • a user can operate the display device 200 through a mobile terminal 300 and the control device 100 .
  • the control apparatus 100 may be a remote control, and the communication between the remote control and the display device includes infrared protocol communication, Bluetooth protocol communication, and wireless or other wired ways to control the display device 200 .
  • the user can control the display device 200 by inputting user instructions through keys on the remote control, voice input, control panel input, and the like.
  • mobile terminals, tablet computers, computers, notebook computers, and other smart devices may also be used to control the display device 200 .
  • the mobile terminal 300 may install a software application with the display device 200 to implement connection communication through a network communication protocol, so as to achieve the purpose of one-to-one control operation and data communication.
  • the audio and video content displayed on the mobile terminal 300 may also be transmitted to the display device 200 to realize a synchronous display function.
  • the display device 200 also performs data communication with the server 400 through various communication methods.
  • the display device 200 may be allowed to communicate via local area network (LAN), wireless local area network (WLAN), and other networks.
  • the server 400 may provide various contents and interactions to the display device 200 .
  • the display device 200 may be a liquid crystal display, an OLED display, or a projection display device.
  • the display device 200 may additionally provide an intelligent network television function that provides a computer-supported function in addition to the function of broadcasting and receiving television.
  • FIG. 2 exemplarily shows a configuration block diagram of the control apparatus 100 according to an exemplary embodiment.
  • 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 device 100 can receive the user's input operation instruction, and convert the operation instruction into an instruction that the display device 200 can recognize and respond to, and play an intermediary role between the user and the display device 200 .
  • the communication interface 130 is used for external communication, and includes at least one of a WIFI chip, a Bluetooth module, NFC or an alternative module.
  • the user input/output interface 140 includes at least one of a microphone, a touchpad, a sensor, a key or an alternative module.
  • FIG. 3 is a block diagram showing a hardware configuration of the display apparatus 200 according to an exemplary embodiment.
  • the display device 200 includes a tuner 210 , a communicator 220 , a detector 230 , an external device interface 240 , a controller 250 , a display 260 , an audio output interface 270 , a memory, a power supply, and a user interface 280 .
  • the controller includes a central processing unit, a video processing unit, an audio processing unit, a graphics processing unit, a RAM, a ROM, and a first interface to an nth interface for input/output.
  • the display 260 may be at least one of a liquid crystal display, an OLED display, a touch display, and a projection display, and may also be a projection device and a projection screen.
  • the tuner-demodulator 210 receives broadcast television signals through wired or wireless reception, and demodulates audio and video signals, such as EPG data signals, from a plurality of wireless or wired broadcast television signals.
  • the detector 230 is used to collect external environment or external interaction signals.
  • the controller 250 and the tuner 210 may be located in different separate devices, that is, the tuner 210 may also be located in an external device of the main device where the controller 250 is located, such as an external set-top box.
  • the controller 250 controls the operation of the display device and responds to user operations.
  • the controller 250 controls the overall operation of the display apparatus 200 .
  • a user may input a user command on a graphical user interface (GUI) displayed on the display 260, and the user input interface receives the user input command through the graphical user interface (GUI).
  • GUI graphical user interface
  • the user may input a user command by inputting a specific sound or gesture, and the user input interface recognizes the sound or gesture through a sensor to receive the user input command.
  • a "user interface” is a medium interface for interaction and information exchange between an application program or an operating system and a user, which enables conversion between an internal form of information and a form acceptable to the user.
  • the commonly used form of user interface is Graphical User Interface (GUI), which refers to a user interface related to computer operations displayed in a graphical manner. It can be an icon, window, control and other interface elements displayed on the display screen of the electronic device, wherein the control can include icons, buttons, menus, tabs, text boxes, dialog boxes, status bars, navigation bars, Widgets, etc. at least one of the visual interface elements.
  • GUI Graphical User Interface
  • FIG. 4 is a schematic diagram of software configuration in the display device 200 according to one or more embodiments of the present application.
  • the system is divided into four layers. Layer)
  • the Application Framework layer referred to as the "framework layer”
  • the Android runtime (Android runtime)
  • the system library layer referred to as the “system runtime layer”
  • the kernel layer contains at least one of the following drivers: audio driver, display driver, Bluetooth driver, camera driver, WIFI driver, USB driver, HDMI driver, sensor driver (such as fingerprint sensor, temperature sensor, pressure sensor, etc.), and power supply drive etc.
  • FIGS. 5A-5B are schematic structural diagrams of a curling laser device according to one or more embodiments of the present application
  • FIGS. 6-8 are schematic diagrams of components of a curling laser device according to one or more embodiments of the present application; FIGS. 5A and 5B 6.
  • the rolling screen 275 in this embodiment can be driven by the driving component 276 to complete the rolling or extending action.
  • the drive assembly 276 includes a plurality of sets of lifting assemblies and beams 231, each set of lifting assemblies includes a lifting frame 232, a lifting motor 233 and a reduction gear set 234; the first end of the lifting frame 232 is rotatably connected to the base 21, and the The two ends are rotatably connected to the beam 231 , the reduction gear set 234 is respectively connected to the lift motor 233 and the lift frame 232 , and the second side of the curling screen 275 is fixedly connected to the beam 231 ; the lift motor 233 can drive the lift frame through the reduction gear set 234 When the lift frame 232 is lifted, the beam 231 is supported to unwind and roll the screen 275 .
  • the lift motor 233 and the reduction gear set 234 are fixed on the base 21 , and the reduction gear set 234 is fixedly connected to the first end of the lift frame 232 .
  • the gears included in the reduction gear set 234 are rotatably fixed on the base 21 through the gear bracket, or the gears in the reduction gear set 234 except the gears connected with the lift frame 232 and/or the lift motor 233 can be rotatably fixed on the base 21 through the gear bracket. It is rotatably fixed on the base 21 .
  • the curling screen 275 can be in three states: the first is that the curling screen 275 needs to be curled up in a non-playing scene to reduce the occupied space of the display device. At this time, the curling screen 275 is in a rolling state. For details, please refer to FIG. 7 . In the second play scenario, the curling screen 275 needs to be extended, so that the extended screen can carry the media resources projected by the projection component 278 . For details, please refer to Figure 8.
  • the third is a transition state (not shown) in which the curling screen 275 is in a state of transition between the rolled state and the expanded state during the upward or downward movement of the curling screen 275 .
  • the roll-up screen 275 can carry the media assets projected by the projection component 278, presenting the media assets to the user.
  • the curling screen 275 can also be an OLED screen, which directly displays media resources to the user.
  • the media resource may be an image or a video, wherein the video is displayed as a frame-by-frame image, so in this embodiment, the media resource may be collectively referred to as an image.
  • the curled screen 275 may be a diffuse screen, or a retrograde screen.
  • the drive assembly 276, connected to the curling screen 275, is configured to drive the curling screen 275 to move, including upward movement or downward movement.
  • the driving component 276 can drive the curling screen 275 to rewind or extend based on the control of the controller 250 .
  • the drive assembly 276 may be a retractable crawler or a motor in some embodiments.
  • the motor can be set with a motor at the left and right ends of the screen, or a reel lift motor can be set in the middle of the screen, and a motor can be set at the left and right ends of the lift screen. Reel lift motor.
  • the monitoring component 277 includes an image collector, and accordingly, the information monitored by the monitoring component 277 may be image information.
  • the monitoring component 277 includes a camera, and the corresponding monitoring information can be obtained by taking pictures of the screen.
  • the number of cameras 279 may be one or more, wherein, at least one camera has a camera area that is a curled screen area, and the camera is used to take pictures of the screen and display images during the lifting process. When the number of cameras is 2, the two cameras are respectively arranged on two sides of the projection assembly.
  • the camera can be rotated on a horizontal plane, and when it is necessary to take a picture of the screen and display an image, the camera is rotated to the screen orientation; when it is required to take a photo of the user, the camera is rotated to the user.
  • the monitoring assembly 277 includes an angle monitor to monitor the real-time rotational angle of the drive assembly 276 .
  • the monitoring component 277 includes a gravitational acceleration sensor. During the rotation of the driving component 276, by monitoring the information of the gravity sensor in three directions of the space coordinate system (x, y, z), any arbitrary information of the driving component 276 can be obtained. The posture corresponding to the moment. The rotation angle of the driving assembly 276 is calculated according to the attitude.
  • 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 curling screen. When a foreign object is detected above the curling screen, the curling screen ascending process can be temporarily suspended.
  • the screen curling and unrolling may be that the screen rises from bottom to top or descends from top to bottom, or can be unrolled from left to right or right to left.
  • the present application describes the direction and form of screen curling and unrolling Not limited.
  • the user presses the power-on button of the control device or the power-on button on the display device to power on the projection assembly and the controller.
  • the control slide is opened and the notification screen rises to offset zero.
  • the sliding cover is used to cover the top of the screen in the rolled state when the screen is in the rolled state, so as to prevent dust from falling on the surface of the screen.
  • the screen control system and the start-up display service are run.
  • the screen control system is connected to the monitoring component, and the status parameters of the drive component are obtained through the monitoring component, so as to obtain information such as the height and status of the screen, and the start-up display service is ready to play Preset image.
  • the preset image may be a preset picture, a preset animation or video, or a preset start-up advertisement or the like.
  • the controller will poll and send instructions to the monitoring component, so as to obtain information such as the current status and height of the screen provided by the monitoring component.
  • the controller judges whether the current screen is at a position relative to the zero point according to the height and status information of the screen. If the current screen does not reach the relative zero position, judge whether the difference between the time when the notification screen rises to the relative zero point and the current time exceeds the preset time difference; if the difference between the time when the notification screen rises to the relative zero point and the current time does not exceed the preset time difference If the difference between the time when the notification screen rises to the relative zero point and the current time exceeds the preset time difference, it means that the detection is overtime and an alarm prompt will be issued.
  • FIG. 9 is a schematic diagram of image projection according to one or more embodiments of the present application.
  • the graphic image service collects layers (layers) drawn by different applications, synthesizes a bitmap, and combines the The image is sent to the projection component so that the projection component projects the image onto the screen.
  • the preset speed curve refers to a curve between time and screen height
  • the preset height curve refers to a curve between time and preset image display height.
  • the preset height curve and the preset speed curve can be consistent from the relative zero point to the highest point.
  • the control of the screen rising according to the preset speed curve and the power-on display service playing the preset image according to the preset height curve may be performed simultaneously, or may be performed sequentially.
  • FIGS. 10A-10B are schematic diagrams of software of a curling laser device according to one or more embodiments of the present application.
  • the software architecture includes: a geometric computing service is used to connect a camera to capture images, Real-time processing is performed and the calculation results are fed back to the on-screen control system of the controller.
  • the geometric calculation service also includes data acquisition, data processing, feature calculation, and result distribution.
  • the screen control system is used to control the screen, perform automatic geometric correction, and provide real-time screen rising status information to upper-layer applications.
  • the screen control system also includes: transport layer, protocol layer, business layer, etc.; the application includes startup animation, setting, and shutdown animation, all of which are used to control the playback of the current effective display interface in real time through the screen control system; the graphic image service is responsible for synthesizing and displaying images, The graphic image service also includes: a media player, a graphic image processing module, and the like.
  • the camera collects data and sends it to the geometric computing service; the geometric computing service calculates the curling or unfolding state of the current screen and the display area state of the laser display in real time; In the unfolded state, the speed of the left and right motors is dynamically adjusted to keep the screen horizontal; the laser projection matrix is dynamically adjusted according to the state of the display area displayed by the laser, so as to achieve the effect that the optical-mechanical projection is always forward; applications such as boot animation can read the curl or Expand the status information, dynamically adjust the effective display area in the current business module to match the height of the screen display; the boot animation and other uses are displayed through the graphic image service.
  • the step of obtaining the height of the screen includes: the controller obtains image information of the current screen through an image collector, and measures the height of the screen according to the image information to obtain the height of the current screen. Determine whether the height of the current screen is lower than the display height of the preset image; wherein, 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 the preset height curve and the current time.
  • the current preset image is divided into the first image and the second image according to the height of the screen; for example, the controller may The width of the screen is used to generate a display area; the first coordinate corresponding to the display area is read; the image corresponding to the first coordinate in the preset image is the second image, and the rest of the images are the first image.
  • the first coordinate system is established with the lower left corner of the screen as the origin.
  • the second coordinate system is established with the lower left corner of the preset image as the origin.
  • the coordinate system 1 is the first Coordinate system
  • coordinate system 2 is the second coordinate system.
  • the size of the screen is 1920mm*1080mm
  • the screen can be cut into 1920*1080 display blocks, and the coordinate value of each display block in the first coordinate system is known .
  • the controller calculates that the height of the screen is 678mm at a certain moment, and 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 the second image, and the rest of the images are the first images.
  • FIG. 12 The image corresponding to the first coordinate in the preset image is the second image, and the rest of the images are the first images.
  • the size of the screen is 1920mm*1080mm.
  • the controller calculates that the height of the screen is 678mm at a certain moment, the image corresponding to the preset image with a height of 678mm from the bottom is the second image, and the rest of the images are the first image.
  • Blackout processing is performed on the first image to obtain a processed image; for example, a floating layer window can be set on the upper layer of the first image, 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,
  • the final processed image can be seen in Figure 14A.
  • the color of each pixel in the first image may be set to black, and the finally obtained processed image may refer to FIG. 14B .
  • the graphic image service divides and masks the preset image, it sends the processed image to the projection component, so that the projection component projects the processed image on the screen.
  • the screen continues to rise according to the preset speed curve and the preset image is projected according to the preset height curve.
  • the processed image projected out can refer to FIG. 15 .
  • the methods provided by some embodiments of the present application are also applicable to the shutdown process.
  • the current preset image is cut into the first image and the second image according to the height of the screen, and the projection component is controlled to project the first image on the current screen.
  • the projection component is controlled to project the first image on the current screen.
  • the screen for example, crop the preset image horizontally at the height of the screen from the top to obtain the first image and the second image.
  • the upper part of the laser projection area can be replaced by a black image or black pixels.
  • the graphic image service combines the black image with the first image after coordinate transformation. into a processed image, and display the processed image on the current screen.
  • the coordinate transformation method subtracts the difference between the highest point of the screen and the current screen height from the ordinate of the first image, and the abscissa remains unchanged.
  • the size of the screen is 1920mm*1080mm
  • the screen can be cut into 1920*1080 display blocks, and the coordinate value of each display block in the first coordinate system is known.
  • the controller calculates that the height of the screen is 678mm at a certain moment, and the preset image is horizontally cropped at a height of 678mm from the top to obtain the first image and the second image. As shown in Fig.
  • the coordinates of the current first image are (1080,0)(1080,1)...(1080,1920);(1079,0)(1079,1)...(1079,1920);... ...(402,0)(402,1)...(402,1920); the difference between the highest point of the screen and the current screen height is 402.
  • the ordinate of the first image is subtracted by 402 to obtain the first image.
  • the coordinates of the image are (402,0)(402,1)...(402,1920);(401,0)(401,1)...(401,1920);...(0,0)(0, 1)...(0,1920), as shown in Figure 16B.
  • the upper part of the laser projection area can be replaced by an all-black image or all-black pixels, and the graphic image service merges the all-black image and the coordinate-transformed first image into a processed image, as shown in FIG. 16C .
  • the graphic image service After the graphic image service performs cropping, coordinate conversion, and blackout processing on the preset image, it sends the processed image to the projection component, so that the projection component projects the processed image on the screen.
  • the projected image in the process of the screen rising, the projected image can be referred to FIG. 17 .
  • the methods provided by some embodiments of the present application are also applicable to the shutdown process.
  • the preset image is cropped to be the same height as the current screen, and when the projection component projects the image, only the current screen area is projected. This method only has laser projection on the screen and no projection outside the screen, which is more in line with the design constraints and will not leak light to the outside of the screen.
  • the user presses the power-on button of the control device or the power-on button on the display device to power on the projection assembly and the controller, the controller notifies the screen to rise, the system blocks sound and keys, and the projection assembly does not project images,
  • the boot animation program cyclically detects the current screen rising status by reading GPIO, etc. After the screen rises to the highest point, the boot animation program notifies the projection component to project the image, and releases the button shielding and sound shielding to enter the main system.
  • the user powers up the projection assembly and the controller by pressing the power button of the control device or pressing the power button on the display device. The controller notifies that the screen goes up and, at the same time, blocks keystrokes and sounds.
  • the projection assembly does not project an image, but the image is still playing in the background.
  • the purpose of shielding the buttons and sounds is to prevent the sound attached to the image from being played or the user accidentally pressing the button on the control device to trigger the corresponding function, so as to make the user mistakenly think that there is an error in the operation of the display device, delay the boot process, and cause a bad user experience.
  • the projection component is controlled to project a preset image and release the key and sound shielding; wherein, the preset height can be half of the total height of the screen.
  • FIG. 18 is a schematic diagram of a display interface according to one or more embodiments of the present application.
  • the screen When it is detected that the screen has risen to the preset height, the screen will display a prompt message, prompting "the screen is starting, press any key to turn on the screen” and release the key shield. At this time, only the font is colored, and other areas are black, such as shown in Figure 18. If it is detected that the user manually triggers the button after the prompt information is displayed, the screen brightening action is triggered, and the projection component is controlled to project a preset image and cancel the sound shielding.
  • the preset image rises according to the preset speed curve; the height of the screen is obtained in real time, if the height of the screen is lower than the display height of the preset image, the preset image is processed according to the height of the screen, so that the display height of the preset image is the same as that of the screen. Match the rising height; if it is not detected that the user manually triggers the button after the prompt message is displayed, and after the screen rises to the highest point, control the projection component to project the preset image and release the sound shielding.
  • the height of the first side of the screen and the height of the second side of the screen are the same, and the screen is in a horizontal state.
  • 19-22 are schematic diagrams of screen states according to one or more embodiments of the present application; as shown in FIG. 19 , during the rising process of the screen, the height of the first side of the screen is inconsistent with the height of the second side of the screen, then the screen is not horizontal state.
  • the step of judging whether the screen is horizontal by using the image information of the screen collected by the image collector is: according to the collected screen image information and the reference position information of the image collector, calculate The height of the first side and the height of the second side of the screen, namely the height of the first side and the height of the second side. If the absolute value of the height difference between the height of the first side and the height of the second side is less than or equal to the difference threshold, it is determined that the screen is in a horizontal state. If the absolute value of the height difference between the height of the first side and the height of the second side is greater than the difference threshold, it is determined that the screen is in a non-horizontal state.
  • the difference threshold may be empirical data pre-stored in the controller.
  • the monitoring assembly includes an angle monitor
  • the display device includes two groups of driving assemblies, and the rotation angle information of the two groups of driving assemblies is respectively monitored by the angle monitors. The heights on both sides are calculated separately from the rotation angle information.
  • the display device includes two groups of driving components, and the two groups of driving components respectively drive two sides of the screen to move. According to the rotation angle information of the two groups of driving components monitored respectively, the heights of the two sides are calculated respectively.
  • the specific process of determining whether the projected image area is in the front projection state is as follows: comparing the projected image area with the reference area, and calculating a deviation value between the projected image area and the reference area.
  • a deviation threshold is preset in the controller, and the deviation threshold is the maximum allowable deviation predicted by experience and does not affect the user's viewing experience. If the deviation value between the projected image area and the reference area is greater than or equal to the deviation threshold, the projected image area is not in the forward projection state. If the deviation value between the projected image area and the reference area is less than the deviation threshold, the projected image area is in the forward projection state.
  • the offset value includes a vertical offset value and an angular offset value.
  • there is an angular deviation value between the projected image area and the reference area in the following embodiments, the default deviation value is greater than the deviation threshold value).
  • there is a vertical distance deviation value between the projected image area and the reference area in the following embodiments, there is a vertical distance deviation value between the projected image area and the reference area.
  • the controller is configured to perform: during the movement of the screen, obtain image information of the projected image area from the monitoring component. Compare the image information with the reference area, and calculate the deviation value between the projected image area and the reference area. If at least one of the vertical deviation value and the angular deviation value is greater than or equal to the corresponding deviation threshold, it is determined that the projected image area is not Forward status. According to the deviation value between the projected image area and the reference area, the projected area adjustment parameter is calculated. Finally, adjust the light-emitting angle of the projection component according to the projection area adjustment parameters, so that the projected image area and the reference area coincide.
  • adjusting the light exit angle of the projection assembly may be by fixing the projection assembly on an adjustment mechanism, and adjusting the light exit angle of the projection assembly through the adjustment mechanism.
  • the projection assembly is fixed on a six-degree-of-freedom adjustment platform, and the position and inclination angle of the projection assembly are realized through the moving pair and the rotating pair of the six-degree-of-freedom adjustment platform, so as to realize the adjustment of the light-emitting angle of the projection assembly.
  • the horizontal angular deviation of the projected image area is greater than the angular deviation threshold, and the vertical distance deviation is smaller than the distance deviation threshold.
  • the angle deviation value is 5°, which exceeds 1° of the angle deviation threshold.
  • the adjustment angle parameter of the projection area is calculated to be 4° ⁇ 5°, that is, the light output angle of the projection component is rotated 4° ⁇ 5° clockwise until the angle deviation value is less than the angle deviation threshold.
  • the projected image area coincides with the reference area, and the adjustment of the projection assembly is completed.
  • the tilt angle and position of the projection assembly are adjusted and adjusted at the same time.
  • the angle deviation value is 5°, which exceeds 1° of the angle deviation threshold value.
  • the adjustment angle parameter of the projection area is calculated to be 4° ⁇ 5°, that is, the light exit angle of the projection component is rotated 4° ⁇ 5° clockwise, so that the angle deviation value is smaller than the angle deviation threshold.
  • the vertical distance deviation value is 3.5cm, which exceeds the distance deviation threshold of 0.5cm.
  • the adjustment distance parameter of the projection area is calculated as 3cm ⁇ 3.5cm, that is, the position of the projection component is moved to the left by 3cm ⁇ 3.5cm, so that the vertical distance deviation value is smaller than the distance deviation threshold.
  • the horizontal angle deviation of the projected image area is less than the angle deviation threshold, and the vertical distance deviation is greater than the distance deviation threshold, it is only necessary to adjust the vertical distance deviation so that the vertical distance deviation value is smaller than the distance deviation threshold.
  • the screen in the projected image area can be in a flat state according to the image information fed back by the monitoring component, and if not, the light exit angle of the projection component can be adjusted so that the screen in the projected image area is in the visual state
  • the top is flat.
  • 23-24 are schematic diagrams of screen flatness according to one or more embodiments of the present application. Specifically, as shown in FIG. 23 , the projected image area can be divided into a plurality of pixel units. If the projection component normally projects an image on the screen, each pixel will appear at a preset position according to the actual image. If there is an abnormality in the pixel unit, the abnormal pixel of the black dot as shown in Figure 24 deviates from the preset position and appears in other positions.
  • the light-emitting angle of the projection assembly can be adjusted, so that the abnormal pixels can visually return to the preset position from other positions.
  • the projection component can have multiple light emitting points, each light emitting point is responsible for a pixel area.
  • the light emitting angle of the specific light emitting point in the pixel area is adjusted separately, so that the pixel area is The position is restored from the position of FIG. 24 to the position of FIG. 23 .
  • the controller is configured to perform: obtaining image information of the projected image area from the monitoring component as the screen is raised to the top. Compare the image information with the reference area, calculate the deviation value between the projected image area and the reference area, if at least one of the horizontal deviation value, vertical deviation value and angular deviation value is greater than or equal to the corresponding deviation threshold, then determine the projection The image area is not in front projection. According to the deviation value between the projected image area and the reference area, the projected area adjustment parameter is calculated. Finally, adjust the light-emitting angle of the projection component according to the projection area adjustment parameters, so that the projected image area and the reference area coincide. The processing of the vertical deviation value and the angular deviation value will not be described in detail.
  • the tilt angle and position of the projection assembly are adjusted simultaneously.
  • the angle deviation value is 5°, which exceeds 1° of the angle deviation threshold value.
  • the adjustment angle parameter of the projection area is calculated to be 4° ⁇ 5°, that is, the light exit angle of the projection component is rotated 4° ⁇ 5° clockwise, so that the angle deviation value is smaller than the angle deviation threshold.
  • the horizontal deviation value is 2.5cm, which exceeds the distance deviation threshold of 0.5cm.
  • the adjustment distance parameter of the projection area is calculated to be 2cm ⁇ 2.5cm, that is, the position of the projection component is moved upward by 2cm ⁇ 2.5cm, so that the horizontal deviation value is smaller than the distance deviation threshold.
  • the horizontal angular deviation of the projected image area is greater than the angular deviation threshold, and both the vertical and horizontal deviations are greater than the distance deviation threshold, the position and tilt angle of the projection assembly are adjusted simultaneously.
  • the specific adjustment method refer to the above-mentioned embodiment. In the embodiment shown in FIG.
  • the user inputs instructions that control the movement of the screen.
  • the controller is configured to perform: Step S3101: in response to an instruction input by the user to control the movement of the screen, the screen is raised according to the preset speed curve, and at the same time, the preset image is played according to the preset height curve; Step S3102: Real-time acquisition of the state of the drive assembly information, the state of the screen, and the image of the projected image area of the projection assembly on the screen; Step S3103: Determine the height of the current screen according to the state information of the drive assembly; Step S3104: Determine whether the height of the current screen is lower than the display height of the preset image ; If the height of the screen is lower than the display height of the preset image, execute step S3105.
  • Step S3105 Crop the preset image so that the preset image after the cropping matches the height of the screen; if the height of the screen is not lower than the display height of the preset image, step S3107 is performed.
  • Step S3107 determine whether the screen is in a horizontal state; if the screen is not in a horizontal state, go to step S3108;
  • step S3108 adjust the drive assembly so that the drive assembly drives the screen to adjust to a horizontal state; if the screen is in a horizontal state, go to step S3109 ;
  • Step S3109 determine whether the projected image area is in a front projection state; if the projected image area is not in a front projection state, perform step S3110;
  • Step S3110 issue adjustment parameters to the projection assembly, so that the projection assembly is adjusted according to the adjustment parameters ; if the projected image area is in the forward projection state, execute step S3106;
  • step S3106 continue to ascend the screen according to the preset speed curve and display the preset image according to the preset height curve
  • the screen is controlled to curl or unroll according to the preset speed curve and the preset image is displayed according to the preset height curve, the status information of the screen is acquired in real time, and the preset image is cropped according to the status information.
  • Adjust the light-emitting angle of the drive assembly and the projection assembly so that it can adjust the level of the lifting screen during the curling or unrolling process and after the curling or unrolling is completed, the front projection of the light-mechanical projection area and/or the image display area matches the height of the screen to improve user experience .
  • FIG. 29 is a flowchart of a method for calibrating a projection component according to one or more embodiments of the present application.
  • some embodiments of the present application provide a method for calibrating a projection component of a display device, and the method is applied in the process of moving a screen. , which includes the following steps: Step 1. During the movement of the screen, the monitoring component monitors the image of the projected image area of the projection component on the screen, and feeds back the image information of the projected image area to the controller.
  • Step 2 Calculate the projection area adjustment parameter according to the deviation value between the projection image area and the reference area, wherein, when the projection image area is in a front projection state, the projection image area and the reference area coincide, When the projected image area is not in a forward projection state, the deviation value includes a vertical deviation value and an angular deviation value.
  • Step 3 Adjust the light-emitting angle of the projection component according to the projection area adjustment parameters, so that the projection image area and the reference area coincide.
  • the specific step of determining whether the projection image area is in a front projection state according to the image information and the information of the reference area is: calculating the projection according to the image information and the information of the reference area The deviation value between the image area and the reference area, when the deviation value is greater than or equal to the deviation threshold value, it is determined that the projected image area is not in the forward projection state; when the deviation value is smaller than the deviation threshold value, it is determined that the The projected image area is in the forward projection state.
  • the method further includes: dividing the projected image area into a plurality of pixel units, and using an image algorithm to determine whether an abnormal pixel unit exists in the plurality of pixel units, wherein the abnormal pixel unit is a deviation from a predetermined pixel unit.
  • the method further includes: when it is determined that the projected image area is not in a flat state, adjusting the light exit angle of the projection component to restore the position of the abnormal pixel unit to the preset position .
  • the preset speed curve refers to a curve between time and the height of the curling screen
  • the preset height curve refers to a curve between time and preset image display height.
  • the curve of time vs. curl screen height and the curve of time vs. preset image display height can be the same or different.
  • FIGS. 30-32 are schematic diagrams of speed curves according to one or more embodiments of the present application.
  • the preset speed curve adopts the default ascending curve parameters of the display device when it leaves the factory, as shown in route 1 of FIG. 30 .
  • route 1 of FIG. 30 due to the inherent characteristics of mechanical equipment, the influence of temperature and humidity in north and south, temperature and humidity in winter and summer, and mechanical aging on machinery, there is a loss in the rise of machinery.
  • the performance of the same machinery may be different, or even The performance of two mechanical devices of the same specification is not the same.
  • One is that the screen TV is gradually aging, and the rotation speed decreases, which causes the screen to lift up longer than before, as shown in route 2 in Figure 30; The actual height should be lower or higher, as shown in line 3 in Figure 30.
  • Hmax is the total height of the screen rising this time
  • t is the current time
  • Tmax is the total time that the screen is rising this time.
  • the actual height and ascent time of each ascent will be used as the basis, and stored in the historical database as a reference for the next startup.
  • the specific implementation method is as follows: 1. In the interface design, design an interface for adding the screen to rise according to the parameters (pass the current rising height and the total time to the screen as parameters). 2. Each time the machine is powered on, the parameters of the current boot (for example, the ascent time, according to the real-time altitude, the total duration through the curve formula, inversely deduce the speed, acceleration and other information of the current ascent). 3.
  • the user interface shows that the system fits a new rising curve according to the calculated parameters.
  • the control screen display image rises.
  • the serial port command is sent to the monitoring component, and it rises synchronously. 5.
  • the parameters of this startup will be included in the rising curve database again for the next startup.
  • the height of the curling screen specifically refers to the distance between the highest point of the curling screen and the bottom (absolute zero point) of the curling screen.
  • the method for calculating the height of the curling screen includes: the controller obtains the number of rotations of the driving component through the monitoring component; the screen display calculation service run by the controller calculates the height of the current curling screen according to the number of rotations of the driving component,
  • the specific formula is:
  • H is the height of the current curling screen
  • r1 is the inner diameter of the reel
  • h is the thickness of the curling screen
  • x is the current number of turns
  • r2 is the current maximum radius.
  • the curling screen is controlled to enter a reset state, so that the curling screen returns to a relative zero point and then rises again according to a preset speed curve, and the projection component projects a preset image according to a preset height curve again.
  • a graph of time versus curling screen height is shown in Figure 31.
  • the reset state refers to re-entering the normal boot process after the curling screen is lowered to the absolute zero point.
  • the screen control system when the screen control system polls and sends an instruction to the monitoring component to obtain the current state, height and abnormal information of the curling screen, it controls the graphic image service to stop sending images to the projection component; controls the curling screen to enter a reset (reset) ) state, when the curling screen drops to the absolute zero point and then rises to the relative zero point, the screen control system sends a screen-raising command to control the curling screen to rise according to the preset speed curve, and at the same time, notify the graphic image service to send the image to the preset curve according to the preset curve.
  • the projection assembly projects onto the curled screen.
  • the screen control system still needs to poll and send an instruction to the monitoring component to obtain information such as the current state and height of the curling screen.
  • the rising height of the curling screen and the display height of the image are kept in sync.
  • the monitoring component feeds back the state to the screen control system, and the curling screen is lifted up.
  • the step of keeping the rising height of the curling screen and the display height of the image in a synchronized state specifically includes: acquiring the height of the current curling screen in real time, and comparing the height of the current curling screen with the display height of the image. If the height of the current curling screen is lower than the display height of the image, the image will be cropped to the same size as the height of the curling screen, and the area of the non-curling screen will be blacked out; if the height of the current curling screen is not lower than the display height of the image, continue to follow the The preset curve rises to curl the screen and display the image.
  • the projection assembly is controlled to project a user interface on the curling screen, and the user interface includes abnormal information prompt information.
  • the abnormal information prompt information includes abnormal information prompt text and abnormal information prompt box.
  • the abnormal information prompt box has a certain height, which can be set as a preset height.
  • the steps of controlling the projection component to project the user interface include: determining the effective display area and the non-effective display area of the user interface according to the current height of the curling screen; masking the non-effective display area; judging whether the current curling screen height exceeds a preset height; When the height of the curling screen does not exceed the preset height, set the abnormal information prompt text at the preset position of the effective display area to obtain the processed user interface; if the current curling screen height exceeds the preset height, set the abnormal information prompt box in The preset position of the effective display area is obtained, and the processed user interface is obtained; the projection component is controlled to project the processed user interface onto the curling screen.
  • the user interface When the height of the curling screen does not exceed the preset height, the user interface displays the abnormal message prompt text, .
  • the user interface displays an abnormal information prompt box, and the abnormal information prompt box can be displayed in the center.
  • the abnormal state and the fault code of the abnormal state can be displayed in the abnormal information prompt text or abnormal information prompt box.
  • the fault is cleared. For example, during the ascending process of the curling screen, it is detected that a foreign object has moved into the ascending range of the curling screen. When the curling screen is stopped, the abnormal information prompt box will be displayed. After the user moves the foreign object out of the rising range of the curling screen, select the "Continue" control and issue an instruction to continue to ascend the curling screen.
  • the controller In response to the user's instruction to continue to ascend the curling screen, the controller redraws the speed curve according to the current curling screen height, the total height of the curling screen, the time that the curling screen has risen and the total rising time of the curling screen; and controls the curling screen according to the redrawn
  • the speed curve rises and curls the screen; at the same time, the projection component is controlled to project a preset image on the curling screen according to the speed curve.
  • the velocity curve formula can be expressed as:
  • Hmax is the total height of the screen rising this time
  • t is the current time
  • Tmax is the total time that the screen is rising this time.
  • Curl screen rise and image display can use the same curve formula.
  • the current curve state is determined by the incoming vertex height Hmax and Tmax.
  • the method of redrawing the speed curve is as follows: when the screen stops abnormally, the screen should continue to be raised after the failure recovery.
  • the formula for calculating the running curve during this recovery is:
  • the graphic image service is controlled to suspend sending images to the projection component; the graphic image service is controlled to send the abnormal information
  • the prompt box is sent to the projection unit; the user issues an instruction to continue to rise and curl the screen after troubleshooting; the screen control system can send the re-drawn speed curve together with the screen raising command to the drive unit, and the drive unit is controlled according to the newly-drawn rising curve
  • the graphic image service is notified to send the image to the projection component to project on the curling screen according to the rearranged rising curve.
  • the screen control system still needs to poll and send commands to the monitoring component to obtain information such as the current state and height of the curling screen.
  • the rising height of the curling screen and the display height of the image are kept in sync.
  • the monitoring component feeds back the state to the screen control system, and the curling screen is lifted up.
  • the above method is also applicable to the situation where the curled screen drops when the device is turned off, and details are not described herein again.
  • the controller detects that the current curling screen is not at the absolute zero position in response to the power-on command input by the user, and in some embodiments, controls the curling screen to enter a reset state, so that the curling screen returns to the relative zero position and then restarts. Ascent according to the preset speed curve, the projection component re-projects the preset image according to the preset height curve.
  • a rising curve is drawn up according to the current height of the curling screen and the total height of the curling screen; wherein, the time to rise to the current height of the curling screen can be determined according to the current height of the curling screen and a preset curve, and the total rising time is subtracted from the height of the current curling screen. Go to the time corresponding to the current altitude, you can get the time required to rise from the current position to the highest point, and then the speed curve and the altitude curve can be redrawn.
  • the curling screen is controlled to ascend the curling screen according to the re-drawn speed curve; the projection component is controlled to project a preset image on the curling screen according to the newly-drawn height curve.
  • the screen control system still needs to poll and send an instruction to the monitoring component to obtain information such as the current state and height of the curling screen.
  • the rising height of the curling screen and the display height of the image are kept in sync.
  • the monitoring component feeds back the state to the screen control system, and the curling screen is lifted up.

Abstract

本申请一些实施方式公开一种显示设备及投影组件校正方法，该方法包括：在根据投射图像区域的图像信息和基准区域的信息确定投射图像区域不为正投状态时，根据所述投射图像区域与所述基准区域的偏差值，计算投射区域调整参数，其中，所述图像信息为监测组件监测的投影组件在屏幕上投射图像区域的图像的信息，所述投射图像区域为正投状态时，所述投射图像区域与所述基准区域相重合，所述偏差值包括竖直偏差值和角度偏差值；根据所述投射区域调整参数，调整所述投影组件的出光角度，以使所述投射图像区域与所述基准区域相重合。

Description

显示设备及投影组件校正方法
本申请要求于2021年3月19日提交的、申请号为202110296908.1、申请名称为“一种显示设备”；于2021年3月19日提交的、申请号为202110298436.3、申请名称为“一种显示设备”；于2021年3月19日提交的、申请号为202110298469.8、申请名称为“显示设备的投影组件校正方法和显示设备”；于2021年3月19日提交的、申请号为202110298485.7、申请名称为“显示设备的屏幕校正方法和显示设备；于2021年3月19日提交的、申请号为202110297021.4、申请名称为“一种显示设备；于2020年6月29日提交的、申请号为202010603016.7、申请名称为“一种显示设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及显示设备技术领域，具体而言，涉及一种显示设备及投影组件校正方法。
背景技术
激光电视是采用激光光源作为显示光源并配合投影显示技术成像，配备专用投影幕，可接收广播电视节目或互联网电视节目的电视产品。激光电视除了采用自上而下展开的屏幕，还采用从电视柜中自下而上展开屏幕，后者具体是将光机和升降屏幕设置在电视柜中，当电视开启时，屏幕从电视柜中徐徐上升，光机的图像会打在后面的全局位置。
发明内容
本申请一些实施例提供一种显示设备，包括：屏幕，被配置为可卷曲升降；投影组件，被配置为向所述屏幕投射图像；驱动组件，被配置为驱动所述屏幕展开或卷曲；监测组件，被配置为在所述屏幕移动过程中，监测所述投影组件在所述屏幕上的投射图像区域的图像，并向控制器反馈所述投射图像区域的图像信息；
控制器，被配置为：在根据所述图像信息和基准区域的信息确定所述投射图像区域不为正投状态时，根据所述投射图像区域与所述基准区域的偏差值，计算投射区域调整参数，其中，所述投射图像区域为正投状态时，所述投射图像区域与所述基准区域相重合，所述偏差值包括竖直偏差值和角度偏差值；根据所述投射区域调整参数，调整所述投影组件的出光角度，以使所述投射图像区域与所述基准区域相重合。
在一些实施例中，所述控制器配置为：连续拍摄多张所述屏幕的图像，根据多张所述屏幕的图像确定在所述屏幕上的变化区域，将所述屏幕上的变化区域确定为所述投射图像区域。
在一些实施例中，所述控制器被配置为：根据所述图像信息和所述基准区域的信息计算所述投射图像区域与所述基准区域的偏差值，在所述偏差值大于或等于偏差阈值时，确定所述投射图像区域不为正投状态；在所述偏差值小于所述偏差阈值时，确定所述投射图像区域为正投状态。
在一些实施例中，所述控制器被配置为：调整所述投影组件的位置和角度。
在一些实施例中，所述控制器被配置为：将所述投射图像区域划分为多个像素单元，利用图像算法确定多个像素单元中是否存在异常像素单元，其中，所述异常像素单元为偏离预设位置的像素单元；在确定多个像素单元中存在至少一个异常像素单元时，确定所述投射图像区域不为平整状态；在确定多个像素单元中不存在异常像素单元时，确定所述投射图像区域为平整状态。
在一些实施例中，所述控制器被配置为：在确定所述投射图像区域不为平整状态时，调整所述投影组件的出光角度，以使所述异常像素单元的位置恢复至所述预设位置。
本申请一些实施例提供一种投影组件校正方法，所述方法应用于所述屏幕的移动过程中，包括：
在根据投射图像区域的图像信息和基准区域的信息确定投射图像区域不为正投状态时，根据所述投射图像区域与所述基准区域的偏差值，计算投射区域调整参数，其中，所述图像信息为监测组件监测的投影组件在屏幕上投射图像区域的图像的信息，所述投射图像区域为正投状态时，所述投射图像区域与所述基准区域相重合，所述偏差值包括竖直偏差值和角度偏差值；根据所述投射区域调整参数，调整所述投影组件的出光角度，以使所述投射图像区域与所述基准区域相重合。
在一些实施例中，根据所述图像信息和所述基准区域的信息确定所述投射图像区域是否为正投状态的具体步骤为：根据所述图像信息和所述基准区域的信息计算所述投射图像区域与所述基准区域的偏差值，在所述偏差值大于或等于偏差阈值时，确定所述投射图像区域不为正投状态；在所述偏差值小于所述偏差阈值使，确定所述投射图像区域为正投状态。
在一些实施例中，所述方法还包括：将所述投射图像区域划分为多个像素单元，利用图像算法确定多个像素单元中是否存在异常像素单元，其中，所述异常像素单元为偏离预设位置的像素单元；在确定多个像素单元中存在至少一个异常像素单元时，确定所述投射图像区域不为平整状态；在确定多个像素单元中不存在异常像素单元时，确定所述投射图像区域为平整状态。
在一些实施例中，所述方法还包括：在确定所述投射图像区域不为平整状态时，调整所述投影组件的出光角度，以使所述异常像素单元的位置恢复至所述预设位置。
附图说明
图1为根据本申请一个或多个实施例的显示设备与控制装置之间操作场景的示意图；
图2为根据本申请一个或多个实施例的显示设备200的硬件配置框图；
图3为根据本申请一个或多个实施例的控制设备100的硬件配置框图；
图4为根据本申请一个或多个实施例的显示设备200中软件配置示意图；
图5A-5B为根据本申请一个或多个实施例的卷曲激光设备结构示意图；
图6-图8为根据本申请一个或多个实施例的卷曲激光设备组成部分示意图；
图9为根据本申请一个或多个实施例的图像投影示意图；
图10A-10B为根据本申请一个或多个实施例的卷曲激光设备软件示意图；
图11-图13、图14A-图14B、图15、图16A-图16C、图17为根据本申请一个或多个实施例的图像裁剪示意图；
图18为根据本申请一个或多个实施例的显示界面示意图；
图19-图22为根据本申请一个或多个实施例的屏幕状态示意图；
图23-图24为根据本申请一个或多个实施例的屏幕平整度示意图；
图25-图28为根据本申请一个或多个实施例的投射图像示意图；
图29为根据本申请一个或多个实施例的投影组件校正方法流程图；
图30-图32为根据本申请一个或多个实施例的速度曲线示意图。
具体实施方式
为使本申请的目的、实施方式和优点更加清楚，下面将结合本申请示例性实施例中的附图，对本申请示例性实施方式进行清楚、完整地描述，显然，所描述的示例性实施例仅是本申请一部分实施例，而不是全部的实施例。
基于本申请描述的示例性实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请所附权利要求保护的范围。此外，虽然本申请中公开内容按照示范性一个或几个实例来介绍，但应理解，可以就这些公开内容的各个方面也可以单独构成一个完整实施方式。需要说明的是，本申请中对于术语的简要说明，仅是为了方便理解接下来描述的实施方式，而不是意图限定本申请的实施方式。除非另有说明，这些术语应当按照其普通和通常的含义理解。
图1为根据本申请一个或多个实施例的显示设备与控制装置之间操作场景的示意图，如图1所示，用户可通过移动终端300和控制装置100操作显示设备200。控制装置100可以是遥控器，遥控器和显示设备的通信包括红外协议通信、蓝牙协议通信，无线或其他有线方式来控制显示设备200。用户可以通过遥控器上按键，语音输入、控制面板输入等输入用户指令，来控制显示设备200。在一些实施例中，也可以使用移动终端、平板电脑、计算机、笔记本电脑、和其他智能设备以控制显示设备200。
在一些实施例中，移动终端300可与显示设备200安装软件应用，通过网络通信协议实现连接通信，实现一对一控制操作的和数据通信的目的。也可以将移动终端300上显示音视频内容传输到显示设备200上，实现同步显示功能显示设备200还与服务器400通过多种通信方式进行数据通信。可允许显示设备200通过局域网(LAN)、无线局域网(WLAN)和其他网络进行通信连接。服务器400可以向显示设备200提供各种内容和互动。显示设备200，可以液晶显示器、OLED显示器、投影显示设备。显示设备200除了提供广播接收电视功能之外，还可以附加提供计算机支持功能的智能网络电视功能。
图2示例性示出了根据示例性实施例中控制装置100的配置框图。如图2所示，控制装置100包括控制器110、通信接口130、用户输入/输出接口140、存储器、供电电源。控制装置100可接收用户的输入操作指令，且将操作指令转换为显示设备200可识别和响应的指令，起用用户与显示设备200之间交互中介作用。通信接口130用于和外部通信，包含WIFI芯片，蓝牙模块，NFC或可替代模块中的至少一种。用户输入/输出接口140包含麦克风，触摸板，传感器，按键或可替代模块中的至少一种。
图3示出了根据示例性实施例中显示设备200的硬件配置框图。如图3所示显示设备200包括调谐解调器210、通信器220、检测器230、外部装置接口240、控制器250、显示器260、音频输出接口270、存储器、供电电源、用户接口280中的至少一种。控制器包括中央处理器，视频处理器，音频处理器，图形处理器，RAM，ROM，用于输入/输出 的第一接口至第n接口。显示器260可为液晶显示器、OLED显示器、触控显示器以及投影显示器中的至少一种，还可以为一种投影装置和投影屏幕。调谐解调器210通过有线或无线接收方式接收广播电视信号，以及从多个无线或有线广播电视信号中解调出音视频信号，如以及EPG数据信号。检测器230用于采集外部环境或与外部交互的信号。控制器250和调谐解调器210可以位于不同的分体设备中，即调谐解调器210也可在控制器250所在的主体设备的外置设备中，如外置机顶盒等。
在一些实施例中，控制器250，通过存储在存储器上中各种软件控制程序，来控制显示设备的工作和响应用户的操作。控制器250控制显示设备200的整体操作。用户可在显示器260上显示的图形用户界面(GUI)输入用户命令，则用户输入接口通过图形用户界面(GUI)接收用户输入命令。或者，用户可通过输入特定的声音或手势进行输入用户命令，则用户输入接口通过传感器识别出声音或手势，来接收用户输入命令。
在一些实施例中，“用户界面”，是应用程序或操作系统与用户之间进行交互和信息交换的介质接口，它实现信息的内部形式与用户可以接受形式之间的转换。用户界面常用的表现形式是图形用户界面(Graphic User Interface，GUI)，是指采用图形方式显示的与计算机操作相关的用户界面。它可以是在电子设备的显示屏中显示的一个图标、窗口、控件等界面元素，其中控件可以包括图标、按钮、菜单、选项卡、文本框、对话框、状态栏、导航栏、Widget等可视的界面元素中的至少一种。
图4为根据本申请一个或多个实施例的显示设备200中软件配置示意图，如图4所示，将系统分为四层，从上至下分别为应用程序(Applications)层(简称“应用层”)，应用程序框架(Application Framework)层(简称“框架层”)，安卓运行时(Android runtime)和系统库层(简称“系统运行库层”)，以及内核层。内核层至少包含以下驱动中的至少一种：音频驱动、显示驱动、蓝牙驱动、摄像头驱动、WIFI驱动、USB驱动、HDMI驱动、传感器驱动(如指纹传感器，温度传感器，压力传感器等)、以及电源驱动等。
将在先申请文件，申请日：2020年2月5日，申请号：202010115288.2，名称：激光投影系统、投影屏幕的上升和下降控制方法；申请日：2020年2月5日，申请号：202010115275.5，名称：激光投影系统、投影屏幕的上升和下降控制方法；申请日：2020年2月5日，申请号：202010115286.3，名称：激光投影系统、投影屏幕的上升和下降控制方法；申请日：2020年11月27日，申请号：202011364537.8，名称：投影设备，全文引用到本申请中。
<硬件介绍>
图5A-5B为根据本申请一个或多个实施例的卷曲激光设备结构示意图，图6-图8为根据本申请一个或多个实施例的卷曲激光设备组成部分示意图；如图5A、图5B、图6所示，本实施例中的卷曲屏幕275可以在驱动组件276的带动下完成收卷或延展动作。驱动组件276包括多组升降组件和横梁231，每组升降组件包括升降架232、升降电机233和减速齿轮组234；升降架232的第一端与基座21可旋转连接，升降架232的第二端与横梁231可旋转连接，减速齿轮组234分别与升降电机233和升降架232连接，卷曲屏幕275的第二侧边与横梁231固定连接；升降电机233能够通过减速齿轮组234驱动升降架232升降，升降架232升起时撑起横梁231以展卷曲屏幕275。升降电机233和减速齿轮组234固定在基座21上，减速齿轮组234与升降架232的第一端固定连接。其中，减速齿轮组234包括的齿轮通过齿轮支架可旋转的固定在基座 21上，或者减速齿轮组234中除了与升降架232和/或升降电机233连接的齿轮之外其余齿轮通过齿轮支架可旋转的固定在基座21上。
在一些实施例中，卷曲屏幕275可以处于三种状态：第一种是在非播放的场景下需要将卷曲屏幕275收卷起来，以缩小显示设备的占用空间。此时，卷曲屏幕275处于收卷状态，具体的可以参阅图7。第二种在播放的场景下需要将卷曲屏幕275延展开来，以使得延展开的屏幕可以承载投影组件278投射的媒体资源。具体的可以参阅图8。第三种是卷曲屏幕275在向上移动或向下移动的过程中卷曲屏幕275处于收卷状态与延展状态之间的过度状态(未示出)。
在一些实施例中，卷曲屏幕275可以承载投影组件278投射的媒体资源，将媒体资源展示给用户。卷曲屏幕275也可以是OLED屏，直接显示媒体资源给用户。媒体资源可以是图像或视频，其中，视频是以一帧一帧的图像来展示的，因此在本实施例中可以将媒体资源统称为图像。在一些实施例中，卷曲屏幕275可以是漫反射屏幕，或者回归型屏幕。驱动组件276，连接卷曲屏幕275，被配置为驱动卷曲屏幕275移动，移动包括向上移动或向下移动。驱动组件276，可以基于控制器250的控制带动卷曲屏幕275收卷或延展。在一些实施例中驱动组件276可以是可卷收的履带装置,也可以是电机。电机可在屏幕的左右两端各设置一个电机，也可以在屏幕的中间段设置一个卷轴升降电机，还可以在升降屏幕的左右两端各设置一个电机，同时，在升降屏幕的中间段设置一个卷轴升降电机。
在一些实施例中，监测组件277包括图像采集器，相应的，监测组件277监测的信息可以是图像信息。具体的，监测组件277包括摄像头，相应的监测的信息可以是通过拍摄的屏幕的图片获得。摄像头279的数量可以是一个或多个，其中，至少有一个摄像头的摄像区域为卷曲屏幕区域，该摄像头用于拍摄升降过程中屏幕和显示图像的照片。当摄像头的数量为2个时，两个摄像头分别设于投影组件的两侧。在一些实施例中，摄像头可在水平面上旋转，当需要拍摄屏幕和显示图像照片时，将拍摄镜头旋转至屏幕方向；当需要拍摄用户照片时，将拍摄镜头旋转至用户。在一些实施例中，监测组件277包括角度监测器，用以监测驱动组件276的实时旋转角度。在一些实施例中，监测组件277包括重力加速度传感器，在驱动组件276旋转的过程中，通过监测重力传感器在空间坐标系(x，y，z)3个方向上的信息，获取驱动组件276任意时刻对应的姿态。在根据姿态至计算出驱动组件276的旋转角度。在一些实施例中，监测组件277包括红外传感器，相应的监测组件277监测到的信息是卷曲屏幕上方是否有异物，当检测到卷曲屏幕上方有异物时，可及时暂停卷曲屏幕上升过程。
在一些实施例中，屏幕卷曲和展开可以是屏幕由下至上上升或由上至下下降，也可以是由左到右展开或由右到左卷曲，本申请对屏幕卷曲和展开的方向和形式不做限定。
在一些实施例中，以开机过程中屏幕上升为例，用户通过按压控制装置的开机键或按压显示设备上的开机键，使得投影组件和控制器上电。控制器上电后，控制滑盖打开，通知屏幕上升至相对零点(offset zero)。其中，滑盖用于在屏幕在收卷状态时遮盖在卷曲状态屏幕的上方，防止灰尘落在屏幕表面。同时，控制器上电后运行屏幕控制系统和开机显示服务，其中，屏幕控制系统连接监测组件，通过监测组件获取驱动组件的状态参数，从而获取屏幕的高度和状态等信息，开机显示服务准备播放预设 图像。预设图像可以是预先设置图片，也可以是预先设置的动画或视频，还可以是预设设置的开机广告等。
在屏幕上升过程中，控制器会轮询发送指令给监测组件，从而获取监测组件提供的屏幕当前状态和高度等信息。控制器根据屏幕的高度和状态信息判断当前屏幕是否在相对零点的位置。如果当前屏幕未达到相对零点的位置，判断通知屏幕上升至相对零点的时间与当前时间的差值是否超过预设时间差；如果通知屏幕上升至相对零点的时间与当前时间的差值未超过预设时间差，继续判断当前屏幕是否在相对零点的位置；如果通知屏幕上升至相对零点的时间与当前时间的差值超过预设时间差，说明检测超时，发出报警提示。如果当前屏幕达到相对零点的位置，控制屏幕按照预设速度曲线上升，开机显示服务按照预设高度曲线显示预设图像。图9为根据本申请一个或多个实施例的图像投影示意图，如图9所示，图形图像服务将不同应用绘制的图层(layer)收集起来，合成一张图像(bitmap)，并将合成的图像发送至投影组件，以使投影组件将该图像投射到屏幕上。在一些实施例中，预设速度曲线是指时间与屏幕高度的曲线，预设高度曲线是指时间与预设图像显示高度的曲线。预设高度曲线与预设速度曲线可以在相对零点到最高点的曲线一致。在一些实施例中，控制屏幕按照预设速度曲线上升与开机显示服务按照预设高度曲线播放预设图像可同时进行，也可以先后进行。
<软件介绍>
在一些实施例中，图10A-10B为根据本申请一个或多个实施例的卷曲激光设备软件示意图，如图10A所示，软件架构包括：几何计算服务用于负责连接摄像头拍摄图像，对图像进行实时处理，并将计算结果反馈给控制器的屏幕控制系统。几何计算服务中还包括数据采集、数据处理、特征计算、结果分发等板块；屏幕控制系统用于负责控制屏幕、自动几何校正，并向上层应用实时提供屏幕上升状态信息。屏幕控制系统还包括：传输层、协议层、业务层等；应用包括开机动画、设置、关机动画，都通过屏幕控制系统来实时控制当前有效显示界面的播放；图形图像服务负责合成并显示图像，图形图像服务还包括：媒体播放器、图形图像处理模块等。
在一些实施例中，如图10B所示，摄像头采集数据，送入几何计算服务；几何计算服务实时计算当前屏幕的卷曲或展开状态和激光显示的显示区域状态；显示控制模块根据屏幕的卷曲或展开状态动态调整左右马达的速度，达到屏幕始终水平；根据激光显示的显示区域状态动态调整激光投射矩阵，达到光机投射始终正投的效果；开机动画等应用通过显示控制模块实时读取卷曲或展开状态信息，动态调整当前业务模块中的有效显示区域与屏幕显示高度匹配；开机动画等用用通过图形图像服务进行显示。
在一些实施例中，获取屏幕的高度的步骤包括：控制器通过图像采集器获取当前屏幕的图像信息，根据图像信息对屏幕高度进行测量，得到当前屏幕的高度。判断当前屏幕的高度是否低于预设图像的显示高度；其中，当前屏幕的高度是根据监测组件反馈的信息获取的，预设图像的显示高度可根据预设高度曲线和当前时间获得。
<图像裁剪和显示>
在一些实施例中，如果当前屏幕的高度低于预设图像的显示高度，则根据屏幕的高度将当前预设图像划分为第一图像和第二图像；例如，控制器可以根据屏幕的高度及屏幕的宽度，生成显示区域；读取显示区域对应的第一坐标；在预设图像中第一坐标对应的图像为第二图像，其余部分的图像为第一图像。以屏幕的左下角为原点建立 第一坐标系。以预设图像的左下角为原点建立第二坐标系。图11-图13、图14A-图14B、图15、图16A-图16C、图17为根据本申请一个或多个实施例的图像裁剪示意图；如图11所示，坐标系1为第一坐标系，坐标系2为第二坐标系。在一些实施例中，在屏幕上升时，屏幕的尺寸为1920mm*1080mm，相应的可以将屏幕切割成1920*1080个显示块，每个显示块在第一坐标系中的坐标值是已知的。屏幕向上移动的过程中，某一时刻控制器计算出屏幕的高度为678mm，显示区域对应的第一坐标为：(0,0)(0,1)……(0,1920)；(1,0)(1,1)……(1,1920)；……(678,0)(678,1)……(678,1920)。预设图像中第一坐标对应的图像为第二图像，其余的图像为第一图像，具体的可以参阅图12。
在一些实施例中，在屏幕上升时，屏幕的尺寸为1920mm*1080mm。屏幕向上移动的过程中，某一时刻控制器计算出屏幕的高度为678mm，预设图像的距离底端高度为678mm对应的图像为第二图像，其余图像为第一图像，具体的可以参阅图13。对第一图像进行遮黑处理，得到处理后的图像；例如，可以在第一图像上层设置一浮层窗口，浮层窗口的尺寸等于第一图像的尺寸，浮层窗口用于加载黑色界面，最终得到的处理后的图像可以参阅图14A。再例如，可以将第一图像中个像素点的颜色设置为黑色，最终得到的处理后的图像可以参阅图14B。图形图像服务对预设图像进行划分和遮黑处理后，将处理后的图像发送至投影组件，以使投影组件将处理后的图像投射在屏幕上。在一些实施例中，如果当前屏幕的高度不低于预设图像的显示高度，继续按照预设速度曲线上升屏幕并按照预设高度曲线投射预设图像。以上实施例中，在屏幕上升的过程中，投射出来的处理后的图像可以参阅图15。在一些实施例中，本申请一些实施例提供的方法同样适用于关机过程。
在一些实施例中，如果当前屏幕的高度低于预设图像的显示高度，则根据屏幕的高度将当前预设图像剪裁为第一图像和第二图像，控制投影组件将第一图像投射在当前屏幕上；例如：将预设图像在距离顶端高度为屏幕的高度处横向裁剪，得到第一图像和第二图像。将第一图像经过坐标转换后移至激光投射区域的下部分，激光投射区域的上部分可由全黑图像或全黑像素代替，图形图像服务将全黑图像与经过坐标转换后的第一图像合并成处理后的图像，将处理后的图像显示在当前屏幕上。
在一些实施例中，坐标转换的方式将第一图像的纵坐标减去屏幕最高点与当前屏幕高度的差值，横坐标不变。例如：在屏幕上升时，屏幕的尺寸为1920mm*1080mm，相应的可以将屏幕切割成1920*1080个显示块，每个显示块在第一坐标系中的坐标值是已知的。屏幕向上移动的过程中，某一时刻控制器计算出屏幕的高度为678mm，将预设图像在距离顶端高度为678mm处横向裁剪，得到第一图像和第二图像。如图16A所示，当前第一图像的坐标为(1080,0)(1080,1)……(1080,1920)；(1079,0)(1079,1)……(1079,1920)；……(402,0)(402,1)……(402,1920)；屏幕最高点与当前屏幕高度的差值为402，经过坐标转换，即第一图像的纵坐标减去402，得到第一图像的坐标为(402,0)(402,1)……(402,1920)；(401,0)(401,1)……(401,1920)；……(0,0)(0,1)……(0,1920)，如图16B所示。激光投射区域的上部分可由全黑图像或全黑像素代替，图形图像服务将全黑图像与经过坐标转换后的第一图像合并成处理后的图像，如图16C所示。图形图像服务对预设图像进行剪裁、坐标转换和遮黑处理后，将处理后的图像发送至投影组件，以使投影组件将处理后的图像投射在屏幕上。以上实施例 中，在屏幕上升的过程中，投射出来的图像可以参阅图17。在一些实施例中，本申请一些实施例提供的方法同样适用于关机过程。
在另一些实施例中，在获取到当前屏幕高度后，对预设图像进行裁剪，裁剪至与当前屏幕高度相同，投影组件投射图像时，仅投射当前屏幕区域。该方式仅屏幕处有激光投射，屏幕外无投射，更符合设计约束，不会漏光到屏幕外，但是需要对投影组件等硬件设备进行改动，开发周期较长。
在一些实施例中，用户通过按压控制装置的开机键或按压显示设备上的开机键，使得投影组件和控制器上电，控制器通知屏幕上升，系统屏蔽声音和按键，投射组件不投射图像，开机动画程序通过读取GPIO等方式循环检测当前屏幕上升状态，等屏幕上升至最高点后，开机动画程序通知投射组件投射图像，并解除按键屏蔽，解除声音屏蔽，进入主系统。在一些实施例中，用户通过按压控制装置的开机键或按压显示设备上的开机键，使得投影组件和控制器上电。控制器通知屏幕上升，同时，屏蔽按键和声音。在前期屏幕上升的过程中，投影组件并不投射图像，但是该图像仍在后台播放。屏蔽按键和声音的目的在于防止图像附带的声音播放出来或用户误按控制装置上的按键触发对应的功能，以使用户误以为显示设备在运行中出现差错，耽误开机进程，造成用户体验不好。当检测到屏幕上升至预设高度时，控制投影组件投射预设图像并解除按键和声音屏蔽；其中，预设高度可为屏幕总高度的一半。
在一些实施例中，图18为根据本申请一个或多个实施例的显示界面示意图。当检测到屏幕上升至预设高度时，屏幕显示提示信息，提示“屏幕正在启动中，按任意键亮屏”并解除按键屏蔽，此时，仅字体是有颜色的，其他区域为黑色，如图18所示。如果检测到用户在显示提示信息之后，手动触发按键，触发亮屏动作，控制投影组件投射预设图像并解除声音屏蔽。预设图像按照预设速度曲线上升；实时获取屏幕的高度，如果屏幕的高度低于预设图像的显示高度，根据屏幕的高度对预设图像进行处理，使得预设图像的显示高度与屏幕的上升高度相匹配；如果未检测到用户在显示提示信息之后，手动触发按键，等屏幕上升至最高点后，控制投影组件投射预设图像并解除声音屏蔽。
<投射图像区域和基准区域不匹配>
在一些实施例中，在屏幕上升过程中，屏幕的第一侧高度和第二侧高度一致，则屏幕的为水平状态。图19-图22为根据本申请一个或多个实施例的屏幕状态示意图；如图19所示，在屏幕上升过程中，屏幕的第一侧高度和第二侧高度不一致，则屏幕为非水平状态。在一些实施例中，如果监测组件包括图像采集器，则通过图像采集器采集的屏幕的图像信息，判断屏幕是否水平的步骤为：根据采集的屏幕图像信息和图像采集器的基准位置信息，计算屏幕的第一侧高度和第二侧高度，即第一侧高度和第二侧高度。如果第一侧高度和第二侧高度的高度差绝对值小于等于差异阈值，则确定屏幕为水平状态。如果第一侧高度和第二侧高度的高度差绝对值大于差异阈值，则确定屏幕为非水平状态。差异阈值可以是预先存储在控制器中的经验数据。在一些实施例中，如果监测组件包括角度监测器，则显示设备包括两组驱动组件，通过角度监测器分别监测两组驱动组件的旋转角度信息。通过旋转角度信息分别计算得到两侧高度。示例性的，显示设备包括两组驱动组件，两组驱动组件分别驱动屏幕的两侧移动。根据分别监测的两组驱动组件的旋转角度信息，分别计算得到两侧高度。
在屏幕的上升过程中，根据投影组件的原始参数，在屏幕上理论上具有可预测的投影区域，即基准区域，如图20所示的虚线框。当投影组件在屏幕上的投射图像区域与基准区域完全重合，即与基准区域相比较为水平状态且投射图像区域的位置与基准区域相比较未发生偏移。此时投射图像区域为正投状态。
在一些实施例中，确定投射图像区域是否为正投状态的具体过程为：将投射图像区域和基准区域进行比对，计算投射图像区域和基准区域之间的偏差值。控制器中预设有偏差阈值，偏差阈值为经过经验预测，不影响用户观看体验的允许的偏差最大值。如果投射图像区域与基准区域之间的偏差值大于或等于偏差阈值，则投射图像区域不为正投状态。如果投射图像区域与基准区域之间的偏差值小于偏差阈值，则投射图像区域为正投状态。
在一些实施例中，偏差值包括竖直偏差值和角度偏差值。如图20所示，投射图像区域与基准区域之间存在角度偏差值(以下实施例均默认偏差值大于偏差阈值)。如图23所示，投射图像区域与基准区域之间存在竖直距离偏差值。如图22所示，投射图像区域与基准区域之间既存在竖直距离偏差，又存在角度偏差。本申请一些实施例是基于屏幕处于移动过程中，屏幕的上边缘处于移动过程中，因此本申请一些实施例的偏差可以不考虑水平方向上的偏差。
在一些实施例中，控制器被配置为执行:在屏幕移动过程中，从监测组件获取投射图像区域的图像信息。将图像信息和基准区域作比较，计算投射图像区域与基准区域的偏差值，如果竖直偏差值和角度偏差值中的至少一个值大于或等于与其对应的偏差阈值，则确定投射图像区域不为正投状态。根据投射图像区域与基准区域的偏差值，计算投射区域调整参数。最后根据投射区域调整参数调整投影组件的出光角度，以使投射图像区域与基准区域相重合。
在一些实施例中，调节投影组件的出光角度可以是将投影组件固定在调节机构上，通过调节机构调节投影组件的出光角度。例如，将投影组件固定在六自由度调节平台上，通过六自由度调节平台的移动副和转动副实现投影组件的位置和倾斜角度，从而实现对投影组件出光角度的调节。示例性的，如图20所示的实施例中，投射图像区域的水平角度偏差大于角度偏差阈值，而竖直距离偏差小于距离偏差阈值。例如角度偏差值为5°，超过角度偏差阈值的1°。则根据角度偏差值计算出投射区域调整角度参数为4°～5°，即将投影组件的出光角度顺时针旋转4°～5°，直至角度偏差值小于角度偏差阈值。此时从用户的视角观看，投射图像区域与基准区域重合，完成投影组件的调节。
如图21所示的实施例中，投射图像区域的水平角度偏差大于角度偏差阈值，同时竖直距离偏差大于距离偏差阈值，则同时调节调整投影组件的倾斜角度和位置。例如，例如角度偏差值为5°，超过角度偏差阈值的1°。则根据角度偏差值计算出投射区域调整角度参数为4°～5°，即将投影组件的出光角度顺时针旋转4°～5°，使得角度偏差值小于角度偏差阈值。竖直距离偏差值为3.5cm，超过距离偏差阈值的0.5cm。则根据竖直距离偏差值计算出投射区域调整距离参数为3cm～3.5cm，即将投影组件的位置向左移动3cm～3.5cm，使得竖直距离偏差值小于距离偏差阈值。如图22所示的实施例中，投射图像区域的水平角度偏差小于角度偏差阈值，同时竖直距离偏差大于距离偏差阈值，则只需要调整竖直距离偏差，使得竖直距离偏差值小于距离偏差阈值。具体 调节方法参考上述实施例。
<屏幕平整度的检测与调节>
在一些实施例中，还可以根据监测组件反馈的图像信息，确定投射图像区域的屏幕是否为平整状态，如果不为平整状态，可通过调整投影组件的出光角度，使得投射图像区域的屏幕在视觉上是平整状态。图23-图24为根据本申请一个或多个实施例的屏幕平整度示意图。具体的，如图23所示，可以将投射图像区域划分为多个像素单元，如果投射组件正常在屏幕上投射图像，则每一个像素会按照实际图像，出现在预设位置上。如果像素单元出现异常，如图24所示的黑色圆点的异常像素，偏离预设位置，而出现在其他位置上。为了解决上述问题，可以调整投影组件的出光角度，使得异常像素从其他位置从视觉上回复到预设位置。具体的，投影组件可以有多个出光点，每个出光点负责一个像素区域，当出现图24所示的异常像素时，单独调整该像素区域的特定出光点的出光角度，使得该像素区域的位置从图24的位置恢复到图23的位置。
<投影区域的检测和调整>
在一些实施例中，控制器被配置为执行:在屏幕升至顶端，从监测组件获取投射图像区域的图像信息。将图像信息和基准区域作比较，计算投射图像区域与基准区域的偏差值，如果水平偏差值、竖直偏差值和角度偏差值中的至少一个值大于或等于与其对应的偏差阈值，则确定投射图像区域不为正投状态。根据投射图像区域与基准区域的偏差值，计算投射区域调整参数。最后根据投射区域调整参数调整投影组件的出光角度，以使投射图像区域与基准区域相重合。关于竖直偏差值和角度偏差值处理不在赘述。
图25-图28为根据本申请一个或多个实施例的投射图像示意图。如图25所示的实施例中，投射图像区域的水平角度偏差大于角度偏差阈值，同时水平偏差大于距离偏差阈值，则同时调节调整投影组件的倾斜角度和位置。例如，例如角度偏差值为5°，超过角度偏差阈值的1°。则根据角度偏差值计算出投射区域调整角度参数为4°～5°，即将投影组件的出光角度顺时针旋转4°～5°，使得角度偏差值小于角度偏差阈值。水平偏差值为2.5cm，超过距离偏差阈值的0.5cm。则根据竖直偏差值计算出投射区域调整距离参数为2cm～2.5cm，即将投影组件的位置向上移动2cm～2.5cm，使得水平偏差值小于距离偏差阈值。如图26所示的实施例中，投射图像区域的水平角度偏差大于角度偏差阈值，同时竖直偏差和水平偏差均大于距离偏差阈值，则同时调整投影组件位置和倾斜角度。具体调节方法参考上述实施例。如图27所示的实施例中，投射图像区域的水平角度偏差小于角度偏差阈值，同时水平偏差大于距离偏差阈值，则只需要调整投影组件位置。具体调节方法参考上述实施例。如图28所示的实施例中，投射图像区域的水平角度偏差小于角度偏差阈值，同时竖直偏差和水平偏差均大于距离偏差阈值，则同时调整投影组件的左右位置和上下位置。具体调节方法参考上述实施例。
在一些实施例中，用户输入控制屏幕移动的指令。控制器被配置为执行：步骤S3101：响应于用户输入的控制屏幕移动的指令，按照预设速度曲线上升屏幕，同时，按照预设高度曲线播放预设图像；步骤S3102：实时获取驱动组件的状态信息、屏幕的状态和投影组件在屏幕上的投射图像区域的图像；步骤S3103：根据驱动组件的状态信息确定当前屏幕的高度；步骤S3104：判断当前屏幕的高度是否低于预设图像的显示高度；如果屏幕的高度低于预设图像的显示高度，执行步骤S3105。步骤S3105： 裁剪预设图像，以使裁剪后预设图像与所述屏幕的高度匹配；如果屏幕的高度不低于预设图像的显示高度，执行步骤S3107。步骤S3107：判断屏幕是否为水平状态；如果屏幕不为水平状态，执行步骤S3108；步骤S3108：调节驱动组件，以使驱动组件驱动所述屏幕调整至水平状态；如果屏幕为水平状态，执行步骤S3109；步骤S3109：判断投射图像区域是否为正投状态；如果投射图像区域不为正投状态，执行步骤S3110；步骤S3110：向投影组件下发调整参数，以使投影组件根据所述调整参数进行调整；如果投射图像区域为正投状态，执行步骤S3106；步骤S3106：继续按照预设速度曲线上升屏幕并按照预设高度曲线显示预设图像；步骤S3111：判断当前屏幕高度是否到达最高点；如果当前屏幕高度未到达最高点，执行步骤S3102。如果当前屏幕高度到达最高点，结束进程。在上述实施例中，用户输入屏幕卷曲或展开指令后，控制屏幕按照预设速度曲线卷曲或展开并按照预设高度曲线显示预设图像，实时获取屏幕的状态信息，根据状态信息裁剪预设图像、调整驱动组件和投影组件的出光角度，以使其在卷曲或展开过程和卷曲或展开完成后调整升降屏幕水平、光机投射区域正投和/或图像显示区域与屏幕高度匹配，提升用户体验。
<投影组件校正方法>
图29为根据本申请一个或多个实施例的投影组件校正方法流程图，参考图29，本申请一些实施例提供一种显示设备的投影组件校正方法，所述方法应用于屏幕的移动过程中，所述包括以下步骤：步骤一、在屏幕的移动过程中，监测组件监测投影组件在屏幕上的投射图像区域的图像，并向控制器反馈所述投射图像区域的图像信息。步骤二、根据所述投射图像区域与所述基准区域的偏差值，计算投射区域调整参数，其中，所述投射图像区域为正投状态时，所述投射图像区域与所述基准区域相重合，所述投射图像区域不为正投状态时，所述偏差值包括竖直偏差值和角度偏差值。步骤三、根据所述投射区域调整参数，调整所述投影组件的出光角度，以使所述投射图像区域与所述基准区域相重合。
在一些实施例中，根据所述图像信息和所述基准区域的信息确定所述投射图像区域是否为正投状态的具体步骤为：根据所述图像信息和所述基准区域的信息计算所述投射图像区域与所述基准区域的偏差值，在所述偏差值大于或等于偏差阈值时，确定所述投射图像区域不为正投状态；在所述偏差值小于所述偏差阈值使，确定所述投射图像区域为正投状态。
在一些实施例中，所述方法还包括：将所述投射图像区域划分为多个像素单元，利用图像算法确定多个像素单元中是否存在异常像素单元，其中，所述异常像素单元为偏离预设位置的像素单元；在确定多个像素单元中存在至少一个异常像素单元时，确定所述投射图像区域不为平整状态；在确定多个像素单元中不存在异常像素单元时，确定所述投射图像区域为平整状态。
在一些实施例中，所述方法还包括：在确定所述投射图像区域不为平整状态时，调整所述投影组件的出光角度，以使所述异常像素单元的位置恢复至所述预设位置。
具体的实现步骤可以参考上述实施例的介绍，这里不再重复说明。
<速度曲线>
在一些实施例中，预设速度曲线是指时间与卷曲屏幕高度的曲线，预设高度曲线是指时间与预设图像显示高度的曲线。时间与卷曲屏幕高度的曲线与时间与预设图像 显示高度的曲线可以相同，也可以不同。在一些实施例中，图30-图32为根据本申请一个或多个实施例的速度曲线示意图，预设速度曲线采用显示设备出厂时默认的上升曲线参数，如图30的路线1所示。但是由于机械设备的固有特性、南北温湿度、冬夏温湿度、机械老化对机械的影响，机械上升是存在损耗的，在漫长的过程中或差异的环境中，同一个机械的表现可能不同，甚至同一规格两个机械设备的表现就不相同。目前主要有两种老化问题，一个是屏幕电视逐渐老化，转速下降，导致屏幕抬起的时间比之前要长，如图30的路线2所示；第二个是屏幕老化，屏幕上升的高度比实际高度要低或者高，如图30的路线3所示。
本申请一些实施例提供一套上升曲线数据库。曲线公式:
实时高度h＝Hmax*(Math.cos((t/Tmax+1)*Math.PI)/2.0f)+0.5f)
公式1
其中，Hmax为本次屏幕升起的总高度，t为当前时间，Tmax为本次屏幕升起的总时长。将每次上升的实际高度和上升时间作为依据，存到历史数据库中，作为下次开机的参考依据。具体实现方法如下：1、在接口设计上，设计增加屏幕根据参数来上升的接口(将本次上升高度，总时间作为参数传给屏幕端)。2、每次开机会将本次开机的参数(例如，上升时间，根据实时高度，总时长通过曲线公式，反推出本次上升的速度，加速度等信息)。3、由于老化，温湿度都是慢慢影响的，因此可以取近10次开机，作为计算本次开机的初始速度，高度，加速度的依据。4、用户界面显示系统根据计算出的参数，拟合一条新的上升曲线。控制屏幕显示图像上升。同时发送串口命令给监测组件，同步上升。5、当屏幕上升到最高点，将本次开机的参数，再次计入上升曲线数据库，供下次开机使用。
在一些实施例中，在按照预设速度曲线上升卷曲屏幕并按照预设高度曲线投射预设图像的过程中，如果检测到预设时间内卷曲屏幕高度未发生变化，停止投射预设图像和上升卷曲屏幕；在一些实施例中，在按照预设速度曲线上升卷曲屏幕并按照预设高度曲线投射预设图像的过程中，如果接收到监测组件发送异常状态信息，停止投射预设图像且停止上升卷曲屏幕；其中，卷曲屏幕的高度具体是指卷曲屏幕的最高点与卷曲屏幕底部(绝对零点)的距离。
在一些实施例中，卷曲屏幕高度的计算方法包括：控制器通过监测组件获取驱动组件的旋转圈数；控制器运行的屏幕显示计算服务根据驱动组件的旋转圈数，计算当前卷曲屏幕的高度，具体公式为：
Figure PCTCN2021102289-appb-000001
r2＝r1+xh  公式2
其中，H为当前卷曲屏幕的高度，r1为卷轴内径，h为卷曲屏幕厚度，x为当前转动圈数，r2为当前最大半径。当预设时间内卷曲屏幕高度未发生变化，说明此时屏幕已经卡住。在一些实施例中，控制卷曲屏幕进入复位状态，以使卷曲屏幕回到相对零点后重新按照预设速度曲线上升，所述投影组件重新按照预设高度曲线投射预设图像。在该过程中，时间与卷曲屏幕高度的曲线图如图31所示。在一些实施例中，复位状态是指将卷曲屏幕降至绝对零点后，再重新进入正常的开机流程。
在一些实施例中，当屏幕控制系统轮询发送指令给监测组件，获取卷曲屏幕的当 前状态、高度和异常信息后，控制图形图像服务停止将图像发送至投影组件；控制卷曲屏幕进入复位(reset)状态，当卷曲屏幕降至绝对零点后又上升到相对零点时，屏幕控制系统发送升屏指令，控制卷曲屏幕按预设速度曲线上升，同时，通知图形图像服务按照预设曲线将图像发送给投影组件投射到卷曲屏幕上。在卷曲屏幕重新上升的过程中，屏幕控制系统仍需要轮询发送指令给监测组件，获取卷曲屏幕的当前状态、高度等信息。卷曲屏幕的上升高度和图像的显示高度保持同步状态。当卷曲屏幕上升至最高点时，监测组件将该状态反馈给屏幕控制系统，卷曲屏幕上升完成。
在一些实施例中，卷曲屏幕的上升高度和图像的显示高度保持同步状态的步骤具体包括：实时获取当前卷曲屏幕的高度，并将当前卷曲屏幕的高度与图像的显示高度作比较。如果当前卷曲屏幕的高度低于图像的显示高度，则将图像裁剪成与卷曲屏幕高度相同的大小，非卷曲屏幕区域遮黑处理；如果当前卷曲屏幕的高度不低于图像的显示高度，继续按照预设曲线上升卷曲屏幕和显示图像。在一些实施例中，在按照预设速度曲线上升卷曲屏幕并按照预设高度曲线投射预设图像的过程中，如果检测到预设时间内卷曲屏幕高度未发生变化，暂停投射预设图像和上升卷曲屏幕；
<屏幕异常>
在一些实施例中，在按照预设曲线上升卷曲屏幕并投射预设图像的过程中，如果接收到监测组件发送异常状态信息，暂停投射预设图像和上升卷曲屏幕；在暂停投射预设图像和上升卷曲屏幕之后，控制投影组件投射用户界面于卷曲屏幕上，用户界面包括异常信息提示信息。在一些实施例中，异常信息提示信息包括异常信息提示文字和异常信息提示框。异常信息提示框具有一定高度，可将该高度设为预设高度。控制投影组件投射用户界面的步骤包括：根据当前卷曲屏幕高度确定用户界面的有效显示区域和非有效显示区域；将非有效显示区域遮黑处理；判断当前卷曲屏幕高度是否超过预设高度；如果当前卷曲屏幕高度未超过预设高度时，将异常信息提示文字设置在有效显示区域的预设位置，得到处理后的用户界面；如果当前卷曲屏幕高度超过预设高度时，将异常信息提示框设置在有效显示区域的预设位置，得到处理后的用户界面；控制投影组件将处理后的用户界面投射至卷曲屏幕上。当卷曲屏幕高度未超过预设高度时，用户界面显示异常信息提示文字，。当当前卷曲屏幕高度超过预设高度时，用户界面显示异常信息提示框，异常信息提示框可居中显示。在异常信息提示文字或异常信息提示框中可显示异常状态和该异常状态的故障码。
在一些实施例中，当用户从异常信息提示框中查看到故障码并知道故障原因后，清除该故障，例如：在卷曲屏幕上升过程中，检测到有异物移入到卷曲屏幕上升的范围，此时，停止卷曲屏幕上升并显示异常信息提示框，用户在将异物移出卷曲屏幕上升的范围后，选中“继续”控件，发出继续上升卷曲屏幕的指令。控制器响应于用户输入的继续上升卷曲屏幕的指令，根据当前卷曲屏幕高度、卷曲屏幕总高度、卷曲屏幕已上升时间和卷曲屏幕上升总时间，重新拟定速度曲线；并控制卷曲屏幕根据重新拟定的速度曲线上升卷曲屏幕；同时，控制投影组件根据速度曲线投射预设图像于卷曲屏幕上。在一些实施例中，速度曲线公式可表示为:
实时高度h＝Hmax*(Math.cos((t/Tmax+1)*Math.PI)/2.0f)+0.5f) 公式3
其中，Hmax为本次屏幕升起的总高度，t为当前时间，Tmax为本次屏幕升起的总时长。
卷曲屏幕上升与图像显示可采用同一曲线公式。通过传入的顶点高度Hmax和Tmax来确定本次曲线状态。如图32所示，重新拟定速度曲线方法如下：当屏幕异常停止时，故障恢复要继续升起屏幕，为保证总的升起时间T不变，可以根据故障之前已升起的时间T1，得出剩下抬起的时长T2＝T-T1，为保证总的升起高度H不变，可以根据故障之前已升起的时间H1，得出剩下抬起的时长H2＝H-H1。计算出本次恢复时运行曲线公式为：
h＝H2*(Math.cos((t/T2+1)*Math.PI)/2.0f)+0.5f)  公式4
在一些实施例中，当屏幕控制系统轮询发送指令给监测组件，获取卷曲屏幕的当前状态、高度和异常信息后，控制图形图像服务暂停将图像发送至投影组件；控制图形图像服务将异常信息提示框发送至投影组件；用户在排除故障后，发出继续上升卷曲屏幕的指令；屏幕控制系统可将重新拟定的速度曲线和升屏指令一同发送给驱动组件，驱动组件按照重新拟定的上升曲线控制卷曲屏幕上升，同时，通知图形图像服务按照重新拟定的上升曲线将图像发送给投影组件投射到卷曲屏幕上。在卷曲屏幕继续上升的过程中，屏幕控制系统仍需要轮询发送指令给监测组件，获取卷曲屏幕的当前状态、高度等信息。卷曲屏幕的上升高度和图像的显示高度保持同步状态。当卷曲屏幕上升至最高点时，监测组件将该状态反馈给屏幕控制系统，卷曲屏幕上升完成。在一些实施例中，以上方法同样适用于关机时卷曲屏幕下降的情况，在此不再赘述。
卷曲屏幕在上升或下降的过程中，可能发生意外断电的情况，使得卷曲屏幕停在非绝对零点的位置。当重新开机后，控制器响应于用户输入的开机指令，检测到当前卷曲屏幕未处于绝对零点位置，在一些实施例中，控制卷曲屏幕进入复位状态，以使卷曲屏幕回到相对零点位置后重新按照预设速度曲线上升，投影组件重新按照预设高度曲线投射预设图像。
在一些实施例中，根据当前卷曲屏幕高度和卷曲屏幕总高度，拟定上升曲线；其中，可根据当前卷曲屏幕高度以及预设曲线确定升至当前卷曲屏幕高度的时间，用总的升起时间减去当前高度对应的时间，可得到从当前位置升至最高点所需时间，即可重新拟定速度曲线和高度曲线。控制卷曲屏幕根据重新拟定的速度曲线上升卷曲屏幕；控制投影组件根据重新拟定的高度曲线投射预设图像于卷曲屏幕上。
在卷曲屏幕重新上升的过程中，屏幕控制系统仍需要轮询发送指令给监测组件，获取卷曲屏幕的当前状态、高度等信息。卷曲屏幕的上升高度和图像的显示高度保持同步状态。当卷曲屏幕上升至最高点时，监测组件将该状态反馈给屏幕控制系统，卷曲屏幕上升完成。
为了方便解释，已经结合具体的实施方式进行了上述说明。但是，上述在一些实施例中讨论不是意图穷尽或者将实施方式限定到上述公开的具体形式。根据上述的教导，可以得到多种修改和变形。上述实施方式的选择和描述是为了更好的解释原理以及实际的应用，从而使得本领域技术人员更好的使用实施方式以及适于具体使用考虑的各种不同的变形的实施方式。

Claims (10)

  1. 一种显示设备，包括：
    屏幕，被配置为可卷曲升降；
    投影组件，被配置为向所述屏幕投射图像；
    驱动组件，被配置为驱动所述屏幕展开或卷曲；
    监测组件，被配置为在所述屏幕移动过程中，监测所述投影组件在所述屏幕上的投射图像区域的图像，并向控制器反馈所述投射图像区域的图像信息；
    控制器，被配置为：
    在根据所述图像信息和基准区域的信息确定所述投射图像区域不为正投状态时，根据所述投射图像区域与所述基准区域的偏差值，计算投射区域调整参数，其中，所述投射图像区域为正投状态时，所述投射图像区域与所述基准区域相重合，所述偏差值包括竖直偏差值和角度偏差值；
    根据所述投射区域调整参数，调整所述投影组件的出光角度，以使所述投射图像区域与所述基准区域相重合。
  2. 根据权利要求1所述的显示设备，所述控制器配置为：
    连续拍摄多张所述屏幕的图像，根据多张所述屏幕的图像确定在所述屏幕上的变化区域，将所述屏幕上的变化区域确定为所述投射图像区域。
  3. 根据权利要求1所述的显示设备，所述控制器被配置为：
    根据所述图像信息和所述基准区域的信息计算所述投射图像区域与所述基准区域的偏差值，在所述偏差值大于或等于偏差阈值时，确定所述投射图像区域不为正投状态；
    在所述偏差值小于所述偏差阈值时，确定所述投射图像区域为正投状态。
  4. 根据权利要求1所述的显示设备，所述控制器被配置为：
    调整所述投影组件的位置和角度。
  5. 根据权利要求1所述的显示设备，所述控制器被配置为：
    将所述投射图像区域划分为多个像素单元，利用图像算法确定多个像素单元中是否存在异常像素单元，其中，所述异常像素单元为偏离预设位置的像素单元；
    在确定多个像素单元中存在至少一个异常像素单元时，确定所述投射图像区域不为平整状态；
    在确定多个像素单元中不存在异常像素单元时，确定所述投射图像区域为平整状态。
  6. 根据权利要求5所述的显示设备，所述控制器被配置为：
    在确定所述投射图像区域不为平整状态时，调整所述投影组件的出光角度，以使所述异常像素单元的位置恢复至所述预设位置。
  7. 一种显示设备的投影组件校正方法，包括：
    在屏幕移动过程中，在根据投射图像区域的图像信息和基准区域的信息确定投射图像区域不为正投状态时，根据所述投射图像区域与所述基准区域的偏差值，计算投射区域调整参数，其中，所述图像信息为监测组件监测的投影组件在屏幕上投射图像区域的图像的信息，所述投射图像区域为正投状态时，所述投射图像区域与所述基准区域相重合，所述偏差值包括竖直偏差值和角度偏差值；
    根据所述投射区域调整参数，调整所述投影组件的出光角度，以使所述投射图像区域 与所述基准区域相重合。
  8. 根据权利要求7所述投影组件校正方法，根据所述图像信息和所述基准区域的信息确定所述投射图像区域是否为正投状态的具体步骤为：
    根据所述图像信息和所述基准区域的信息计算所述投射图像区域与所述基准区域的偏差值，在所述偏差值大于或等于偏差阈值时，确定所述投射图像区域不为正投状态；
    在所述偏差值小于所述偏差阈值使，确定所述投射图像区域为正投状态。
  9. 根据权利要求7所述投影组件校正方法，所述方法还包括：
    将所述投射图像区域划分为多个像素单元，利用图像算法确定多个像素单元中是否存在异常像素单元，其中，所述异常像素单元为偏离预设位置的像素单元；
    在确定多个像素单元中存在至少一个异常像素单元时，确定所述投射图像区域不为平整状态；
    在确定多个像素单元中不存在异常像素单元时，确定所述投射图像区域为平整状态。
  10. 根据权利要求9所述的投影组件校正方法，所述方法还包括：
    在确定所述投射图像区域不为平整状态时，调整所述投影组件的出光角度，以使所述异常像素单元的位置恢复至所述预设位置。
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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115225877A (zh) * 2022-07-15 2022-10-21 湖南省谛源光学科技有限公司 一种投影设备的投影同步显示方法、系统及装置
CN117250902A (zh) * 2023-11-20 2023-12-19 石家庄学院 基于物联网的云教室的设备控制系统及方法
CN117288095B (zh) * 2023-11-27 2024-02-13 浙江极氪汽车研究开发有限公司 一种门槛照地灯的检测装置及方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102263920A (zh) * 2010-05-25 2011-11-30 精工爱普生株式会社 投影仪及投射状态调整方法
CN102611822A (zh) * 2012-03-14 2012-07-25 海信集团有限公司 投影仪及其投影图像校正方法
CN104536250A (zh) * 2014-06-30 2015-04-22 江苏红叶视听器材股份有限公司 大尺寸卷动幕
US20160119602A1 (en) * 2014-10-27 2016-04-28 Canon Kabushiki Kaisha Control apparatus, control method, and storage medium
CN106937101A (zh) * 2017-03-22 2017-07-07 成都市极米科技有限公司 投影区域校正方法及系统
CN107547880A (zh) * 2016-06-24 2018-01-05 上海顺久电子科技有限公司 一种投影成像的自动校正方法、装置及激光电视
CN109005394A (zh) * 2018-09-19 2018-12-14 青岛海信激光显示股份有限公司 一种投影图像的校正方法及投影机
CN109413402A (zh) * 2018-11-09 2019-03-01 四川长虹电器股份有限公司 适应任意屏幕的图像校正系统及方法

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9329827B2 (en) * 2004-12-29 2016-05-03 Funmobility, Inc. Cropping of images for display on variably sized display devices
JP4466535B2 (ja) * 2005-10-24 2010-05-26 セイコーエプソン株式会社 プロジェクタ
US20100060547A1 (en) * 2008-09-11 2010-03-11 Sony Ericsson Mobile Communications Ab Display Device and Method for Displaying Images in a Variable Size Display Area
KR101892959B1 (ko) * 2012-08-22 2018-08-29 삼성전자주식회사 플렉서블 디스플레이 장치 및 플렉서블 디스플레이 장치의 제어 방법
CN204229113U (zh) * 2014-12-01 2015-03-25 联想(北京)有限公司 投影屏及电子设备
KR20160123620A (ko) * 2015-04-16 2016-10-26 삼성전자주식회사 디스플레이 장치 및 디스플레이 방법
KR102359544B1 (ko) * 2015-06-22 2022-02-08 엘지전자 주식회사 변형 가능한 디스플레이 장치 및 그의 동작 방법
KR102359550B1 (ko) * 2015-08-26 2022-02-08 엘지전자 주식회사 플렉서블 디스플레이 장치 및 그의 동작 방법
CN205080358U (zh) * 2015-09-23 2016-03-09 上海晶唐智能科技有限公司 一种投影框架幕
JP6753049B2 (ja) * 2015-10-09 2020-09-09 セイコーエプソン株式会社 プロジェクター、及び、プロジェクターの制御方法。
KR102500060B1 (ko) * 2015-11-18 2023-02-16 삼성전자주식회사 전자 장치 및 이의 제어 방법
US10684543B2 (en) * 2016-04-12 2020-06-16 Corning Incorporated Smart window projection screen
US20180137840A1 (en) * 2016-11-17 2018-05-17 Fuji Xerox Co., Ltd. Terminal apparatus and non-transitory computer readable medium
CN107481555A (zh) * 2017-08-11 2017-12-15 青岛江河湖海创新技术研究院有限公司 一种多媒体教学用室内远距离教学设备
CN109270783A (zh) * 2018-10-19 2019-01-25 深圳御光新材料有限公司 一种全息投影幕布
CN110851214B (zh) * 2019-09-29 2021-01-29 深圳市火乐科技发展有限公司 投影画面控制方法及相关产品
CN110830716B (zh) * 2019-11-08 2021-08-27 南京星云数字技术有限公司 图像生成方法、装置、计算机设备和存储介质
CN111273511B (zh) * 2020-02-25 2022-04-19 青岛海信激光显示股份有限公司 激光投影系统、投影屏幕的上升和下降控制方法

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102263920A (zh) * 2010-05-25 2011-11-30 精工爱普生株式会社 投影仪及投射状态调整方法
CN102611822A (zh) * 2012-03-14 2012-07-25 海信集团有限公司 投影仪及其投影图像校正方法
CN104536250A (zh) * 2014-06-30 2015-04-22 江苏红叶视听器材股份有限公司 大尺寸卷动幕
US20160119602A1 (en) * 2014-10-27 2016-04-28 Canon Kabushiki Kaisha Control apparatus, control method, and storage medium
CN107547880A (zh) * 2016-06-24 2018-01-05 上海顺久电子科技有限公司 一种投影成像的自动校正方法、装置及激光电视
CN106937101A (zh) * 2017-03-22 2017-07-07 成都市极米科技有限公司 投影区域校正方法及系统
CN109005394A (zh) * 2018-09-19 2018-12-14 青岛海信激光显示股份有限公司 一种投影图像的校正方法及投影机
CN109413402A (zh) * 2018-11-09 2019-03-01 四川长虹电器股份有限公司 适应任意屏幕的图像校正系统及方法

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