CN112437284A

CN112437284A - Projection picture correction method, terminal equipment and display equipment

Info

Publication number: CN112437284A
Application number: CN202011322273.XA
Authority: CN
Inventors: 侯进良; 宋虎; 片兆峰; 崔会会; 田鹏升
Original assignee: Hisense Visual Technology Co Ltd
Current assignee: Hisense Visual Technology Co Ltd
Priority date: 2020-11-23
Filing date: 2020-11-23
Publication date: 2021-03-02
Also published as: WO2022105344A1

Abstract

The invention discloses a projection picture correction method, terminal equipment and display equipment, which respond to a second correction operation input by a user according to an operation guide page and establish communication connection with the display equipment; the operation guide page is a page which is displayed by the display equipment after receiving the first correction operation and is used for guiding a user to start the coordination correction at the terminal equipment; collecting a correction chart displayed by display equipment, and calculating correction parameters according to the correction chart; and sending the correction parameters to the display equipment so that the display equipment corrects the laser signals by using the correction parameters. According to the method and the device, manual correction of a user is not needed, the terminal does not send the correction chart to the display device after collecting and correcting the chart, the correction parameters are directly calculated at the terminal according to the chart, time consumed by transmission of the chart is eliminated, the correction parameters are not needed to be calculated at the display device, the operation pressure of the display device is reduced, the display device can realize quick correction according to the parameters fed back by the terminal, and the correction efficiency is improved.

Description

Projection picture correction method, terminal equipment and display equipment

Technical Field

The invention relates to the field of laser televisions, in particular to a projection picture correction method, terminal equipment and display equipment.

Background

The imaging principle of the laser television is that a video signal is separated into image signals of three primary colors of RGB, laser with corresponding intensity is respectively controlled to be emitted by a semiconductor laser generator of the three primary colors of RGB, and after modulation output and signal synchronous control, laser beams are projected onto a screen based on an ultra-short-focus projection technology, so that a user can watch a projection picture. The laser television has the advantages of eye protection, energy conservation, high spectral purity, high cost performance and the like, and has good application prospect.

Because the laser television adopts laser projection imaging, a projection picture may exceed or be smaller than a framing range of a screen frame, so that the projection effect is reduced, and for the situation, the geometric correction of the projection picture is needed, so that the corrected projection picture and the screen frame can be better matched, and the geometric correction mode is generally divided into manual correction and automatic correction.

The manual correction needs a user to manually adjust a projection area, so that the operation is complicated, and the correction efficiency is low; the current automatic correction scheme is that a mobile terminal shoots a projection correction graphic card displayed on a screen of a laser television, then the projection correction graphic card is sent to the laser television, and the laser television carries out image processing on the graphic card and then gives correction parameters.

Disclosure of Invention

In order to solve the problems discussed in the background art, the present invention provides a projection image correction method, a terminal device, and a display device.

A first aspect provides a terminal device, including:

a display for displaying a correction page;

the image collector is used for shooting a correction chart on the display equipment;

the communicator is used for being in communication connection with the display device and the server;

a controller configured to perform:

establishing a communication connection with the display device in response to a second correction operation input by the user according to the operation guidance page; the operation guide page is a page which is displayed by the display equipment after receiving the first correction operation and is used for guiding a user to start the coordination correction at the terminal equipment;

controlling an image collector to collect a correction chart displayed by display equipment, and calculating correction parameters according to the correction chart;

and sending the correction parameters to the display equipment so that the display equipment corrects the laser signals by using the correction parameters.

In some embodiments, after establishing the communication connection with the display device, the controller is further configured to perform:

loading a deep learning model and a correction page from a server side; wherein the deep learning model is used for calculating correction parameters; the correction page comprises a first control, a second control and a window used for displaying shooting preview of the correction chart, the first control is used for finishing the correction process when being triggered, and the second control is used for reacquiring the correction chart when being triggered and correcting again.

In some embodiments, prior to calculating the correction parameters from the correction chart, the controller is further configured to perform:

preprocessing the correction graph card by utilizing OpenCV.JS, wherein the preprocessing comprises binarization and edge detection;

if the screen frame is not identified in the preprocessed correction graph card, continuously collecting the correction graph card;

if the screen frame is identified in the preprocessed correction chart, the correction parameters are calculated.

In some embodiments, the controller is configured to calculate the correction parameter as follows:

carrying out affine transformation on a screen frame in the preprocessed correction graph card;

and inputting the correction graph card obtained after affine transformation into the deep learning model for calculation, and finally outputting the correction parameters by the deep learning model.

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

controlling an image collector to collect a target graphic card, wherein the target graphic card is a graphic card which is updated and displayed by display equipment after laser signals are corrected;

controlling the window to display the target graphic card;

responding to the operation of triggering the first control after the user views the target graphic card, and ending the current correction flow;

and responding to the operation of triggering the second control after the user views the target graphic card, and re-correcting according to the acquired target graphic card.

In some embodiments, the controller is configured to establish a communication connection with the display device as follows:

receiving a broadcast packet sent by the display device;

analyzing the identification information of the display equipment contained in the broadcast packet;

adding the identification information of the display equipment into an equipment list; the device list stores identification information of a plurality of devices in the same network with the terminal device;

and responding to the selection operation of the identification information of the display equipment in the equipment list, and establishing the TCP connection between the terminal equipment and the display equipment.

A second aspect provides a display device comprising:

the display is used for projecting and displaying the operation guide page and the correction chart;

the communicator is used for being in communication connection with the terminal equipment;

a controller configured to perform:

in response to receiving the first correction operation, controlling a display to display an operation guidance page, and transmitting a broadcast packet to the terminal device; the operation guide page is used for guiding a user to start coordination correction on the terminal equipment; the broadcast packet is used for requesting to establish communication connection with the terminal equipment, and the broadcast packet contains identification information of the display equipment;

after communication connection is established with the terminal equipment, controlling a display to display a correction graphic card;

and the receiving terminal equipment corrects the laser signal by using the correction parameters according to the correction parameters calculated by the correction chart.

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

generating a target graphic card based on the corrected laser signal;

and controlling a display to update and display the target graphic card, wherein the target graphic card is used for determining to finish the current correction process or re-correct after being collected by an image collector of the terminal equipment.

A third aspect provides a projection picture correction method in a terminal device, the method further comprising:

collecting a correction chart displayed by display equipment, and calculating correction parameters according to the correction chart;

A fourth aspect provides a projection picture correction method in a display apparatus, including:

in response to receiving the first correction operation, displaying an operation guidance page, and transmitting a broadcast packet to the terminal device; the operation guide page is used for guiding a user to start coordination correction on the terminal equipment; the broadcast packet is used for requesting to establish communication connection with the terminal equipment, and the broadcast packet contains identification information of the display equipment;

after establishing communication connection with the terminal equipment, displaying a correction graphic card;

In the technical scheme provided by the application, the double-end communication interaction between the terminal equipment and the display equipment is mainly related, after the display equipment end receives a first correction operation, the first correction operation is, for example, starting a geometric correction application 1 in the display equipment, an operation guide page is displayed, after a user sees an instruction of the operation guide page, a second correction operation is input in the terminal equipment, and the second correction operation is, for example, starting a geometric correction application 2 in the terminal, so that the communication connection between the display equipment and the terminal is established. At the moment, the display equipment end projects and displays the correction chart card, the image collector in the terminal shoots the image of the correction chart card, then the correction parameters are calculated in the terminal according to the correction chart card, then the correction parameters are sent to the display equipment, and the display equipment can directly use the correction parameters to correct the laser signals, so that the picture projection effect is improved. According to the method and the device, manual correction of a user is not needed, the terminal does not send the correction chart to the display device after collecting and correcting the chart, the correction parameters are directly calculated at the terminal according to the chart, time consumed by transmission of the chart is eliminated, the correction parameters are not needed to be calculated at the display device, the operation pressure of the display device is reduced, the display device can realize quick correction according to the parameters fed back by the terminal, and the correction efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings to be accessed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic diagram illustrating an operation scenario between a display device 200 and a control apparatus 100;

fig. 2 is a block diagram illustrating a hardware configuration of the display device 200 in fig. 1;

fig. 3 is a block diagram schematically showing a hardware configuration of the control apparatus 100 in fig. 1;

fig. 4 is a schematic diagram illustrating a software configuration in the display device 200 in fig. 1;

FIG. 5 is a schematic diagram illustrating an icon control interface display of an application on display device 200;

fig. 6 is a schematic diagram illustrating a conventional display device displaying an operation guidance page;

fig. 7 is a schematic diagram illustrating a conventional display device displaying a calibration chart;

fig. 8 is a schematic diagram illustrating a page jumped after a conventional terminal device scans a two-dimensional code;

fig. 9 is a schematic diagram illustrating a conventional terminal device when acquiring a correction chart;

fig. 10 is a schematic diagram illustrating a software architecture among a terminal device, a display device and a server according to the present application;

fig. 11 is a logic diagram illustrating interaction among a terminal device, a display device, and a server;

fig. 12 is a schematic view illustrating an operation guidance page displayed by the display device in the present application;

fig. 13 is an interface diagram illustrating a terminal device display device list;

fig. 14 is a schematic diagram illustrating a terminal device displaying a correction page.

Detailed Description

To make the objects, embodiments and advantages of the present application clearer, the following description of exemplary embodiments of the present application will clearly and completely describe the exemplary embodiments of the present application with reference to the accompanying drawings in the exemplary embodiments of the present application, and it is to be understood that the described exemplary embodiments are only a part of the embodiments of the present application, and not all of the embodiments.

All other embodiments, which can be derived by a person skilled in the art from the exemplary embodiments described herein without inventive step, are intended to be within the scope of the claims appended hereto. In addition, while the disclosure herein has been presented in terms of one or more exemplary examples, it should be appreciated that aspects of the disclosure may be implemented solely as a complete embodiment.

It should be noted that the brief descriptions of the terms in the present application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of the present application. These terms should be understood in their ordinary and customary meaning unless otherwise indicated.

The terms "first," "second," "third," and the like in the description and claims of this application and in the above-described drawings are used for distinguishing between similar or analogous objects or entities and are not necessarily intended to limit the order or sequence of any particular one, Unless otherwise indicated. It is to be understood that the terms so accessed are interchangeable under appropriate circumstances such that the terms first, second, third, etc. are, for example, capable of implementation in sequences other than those illustrated or otherwise described herein with respect to the embodiments of the application.

Furthermore, the terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a product or device that comprises a list of elements is not necessarily limited to those elements explicitly listed, but may include other elements not expressly listed or inherent to such product or device.

The term "module," as referred to herein, refers to any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic, or combination of hardware and/or software code that is capable of performing the functionality associated with that element.

The term "remote control" as referred to in this application refers to a component of an electronic device, such as the display device disclosed in this application, that is typically wirelessly controllable over a relatively short distance. Generally access infrared and/or Radio Frequency (RF) signals and/or bluetooth to connect with the electronic device, and may also include WiFi, wireless USB, bluetooth, motion sensor, etc. For example: the hand-held touch remote controller replaces most of the physical built-in hard keys in the common remote control device with the user interface in the touch screen.

The term "gesture" as referred to in this application refers to a user action through a change in hand shape or hand motion to convey an intended idea, action, purpose, or result.

Fig. 1 is a schematic diagram illustrating an operation scenario between a display device and a control apparatus according to an embodiment. As shown in fig. 1, a user may operate the display device 200 through the terminal device 300 and the control apparatus 100.

In some embodiments, the control apparatus 100 may be a remote controller, and the communication between the remote controller and the display device includes an infrared protocol communication or a bluetooth protocol communication, and other short-distance communication methods, etc., and the display device 200 is controlled by a wireless method or other wired methods. The wireless mode may be direct connection or non-direct connection, and may or may not be a route. The user may input a user command through a key on a remote controller, voice input, control panel input, etc. to control the display apparatus 200. Such as: the user can input a corresponding control command through a volume up/down key, a channel control key, up/down/left/right moving keys, a voice input key, a menu key, a power on/off key, etc. on the remote controller, to implement the function of controlling the display device 200.

In some embodiments, mobile terminals, tablets, computers, laptops, and other intelligent end devices may also be accessed to control the display device 200. For example, accessing an application running on the smart device controls the display device 200. The application, through configuration, may provide the user with various controls in an intuitive User Interface (UI) on a screen associated with the smart device.

In some embodiments, the terminal device 300 may install a software application with the display device 200, implement connection communication through a network communication protocol, and implement the purpose of one-to-one control operation and data communication. Such as: the terminal device 300 and the display device 200 can establish a control instruction protocol, synchronize a remote control keyboard to the terminal device 300, and control the display device 200 by controlling a user interface on the terminal device 300. The audio and video content displayed on the terminal device 300 can also be transmitted to the display device 200, so as to realize the synchronous display function.

As also shown in fig. 1, the display apparatus 200 also performs data communication with the server 400 through various communication means. The display device 200 may be allowed to be communicatively connected through a Local Area Network (LAN), a Wireless Local Area Network (WLAN), and other networks. The server 400 may provide various contents and interactions to the display apparatus 200. Illustratively, the display device 200 receives software program updates, or accesses a remotely stored digital media library, by sending and receiving information, as well as Electronic Program Guide (EPG) interactions. The server 400 may be a cluster or a plurality of clusters, and may include one or more types of servers. Other web service contents such as video on demand and advertisement services are provided through the server 400.

The display device 200 may be a liquid crystal display, an OLED display, a projection display device. The particular display device type, size, resolution, etc. are not limiting, and those skilled in the art will appreciate that the display device 200 may be modified in performance and configuration as desired.

The display apparatus 200 may additionally provide an intelligent network tv function of a computer support function including, but not limited to, a network tv, an intelligent tv, an Internet Protocol Tv (IPTV), and the like, in addition to the broadcast receiving tv function.

A hardware configuration block diagram of a display device 200 according to an exemplary embodiment is exemplarily shown in fig. 2.

In some embodiments, at least one of the controller 250, the tuner demodulator 210, the communicator 220, the detector 230, the input/output interface 255, the display 275, the audio output interface 285, the memory 260, the power supply 290, the user interface 265, and the external device interface 240 is included in the display apparatus 200.

In some embodiments, a display 275 receives image signals originating from the first processor output and displays video content and images and components of the menu manipulation interface.

In some embodiments, the display 275, includes a display component for presenting a picture, and a drive component that drives the display of an image.

In some embodiments, the video content is displayed from broadcast television content, or alternatively, from various broadcast signals that may be received via wired or wireless communication protocols. Alternatively, various image contents received from the network communication protocol and sent from the network server side can be displayed.

In some embodiments, the display 275 is used to present a user-manipulated UI interface generated in the display apparatus 200 and used to control the display apparatus 200.

In some embodiments, a driver assembly for driving the display is also included, depending on the type of display 275.

In some embodiments, display 275 is a projection display and may also include a projection device and a projection screen.

In some embodiments, communicator 220 is a component for communicating with external devices or external servers according to various communication protocol types. For example: the communicator may include at least one of a WIFI module 221, a bluetooth module 222, a wired ethernet module 223, and other network communication protocol modules or near field communication protocol modules, and an infrared receiver, so that the communicator 220 may receive a control signal of the control device 100 according to the control of the controller 250, and implement the control signal as a signal type such as a WIFI signal, a bluetooth signal, and a radio frequency signal.

In some embodiments, the display apparatus 200 may establish control signal and data signal transmission and reception with the external control device 100 or the content providing apparatus through the communicator 220.

In some embodiments, the user interface 265 may be configured to receive infrared control signals from a control device 100 (e.g., an infrared remote control, etc.).

In some embodiments, the detector 230 is a signal used by the display device 200 to collect an external environment or interact with the outside.

In some embodiments, the detector 230 includes a light receiver, a sensor for collecting the intensity of ambient light, and parameters changes can be adaptively displayed by collecting the ambient light, and the like.

In some embodiments, the detector 230 may further include an image collector, such as a camera, etc., which may be configured to collect external environment scenes, collect attributes of the user or gestures interacted with the user, adaptively change display parameters, and recognize user gestures, so as to implement a function of interaction with the user.

In some embodiments, the detector 230 may also include a temperature sensor or the like, such as by sensing ambient temperature.

In some embodiments, the display apparatus 200 may adaptively adjust a display color temperature of an image. For example, the display apparatus 200 may be adjusted to display a cool tone when the temperature is in a high environment, or the display apparatus 200 may be adjusted to display a warm tone when the temperature is in a low environment.

In some embodiments, the detector 230 may also be a sound collector or the like, such as a microphone, which may be used to receive the user's voice. Illustratively, a voice signal including a control instruction of the user to control the display device 200, or to collect an ambient sound for recognizing an ambient scene type, so that the display device 200 can adaptively adapt to an ambient noise.

In some embodiments, as shown in fig. 2, the input/output interface 255 is configured to allow data transfer between the controller 250 and external other devices or other controllers 250. Such as receiving video signal data and audio signal data of an external device, or command instruction data, etc.

In some embodiments, the external device interface 240 may include, but is not limited to, the following: the interface can be any one or more of a high-definition multimedia interface (HDMI), an analog or data high-definition component input interface, a composite video input interface, a USB input interface, an RGB port and the like. The plurality of interfaces may form a composite input/output interface.

In some embodiments, as shown in fig. 2, the tuning demodulator 210 is configured to receive a broadcast television signal through a wired or wireless receiving manner, perform modulation and demodulation processing such as amplification, mixing, resonance, and the like, and demodulate an audio and video signal from a plurality of wireless or wired broadcast television signals, where the audio and video signal may include a television audio and video signal carried in a television channel frequency selected by a user and an EPG data signal.

In some embodiments, the frequency points demodulated by the tuner demodulator 210 are controlled by the controller 250, and the controller 250 can send out control signals according to user selection, so that the modem responds to the television signal frequency selected by the user and modulates and demodulates the television signal carried by the frequency.

In some embodiments, the broadcast television signal may be classified into a terrestrial broadcast signal, a cable broadcast signal, a satellite broadcast signal, an internet broadcast signal, or the like according to the broadcasting system of the television signal. Or may be classified into a digital modulation signal, an analog modulation signal, and the like according to a modulation type. Or the signals are classified into digital signals, analog signals and the like according to the types of the signals.

In some embodiments, the controller 250 and the modem 210 may be located in different separate devices, that is, the modem 210 may also be located in an external device of the main device where the controller 250 is located, such as an external set-top box. Therefore, the set top box outputs the television audio and video signals modulated and demodulated by the received broadcast television signals to the main body equipment, and the main body equipment receives the audio and video signals through the first input/output interface.

In some embodiments, the controller 250 controls the operation of the display device and responds to user operations through various software control programs stored in memory. The controller 250 may control the overall operation of the display apparatus 200. For example: in response to receiving a user command for selecting a UI object to be displayed on the display 275, the controller 250 may perform an operation related to the object selected by the user command.

In some embodiments, the object may be any one of selectable objects, such as a hyperlink or an icon. Operations related to the selected object, such as: displaying an operation connected to a hyperlink page, document, image, or the like, or performing an operation of a program corresponding to the icon. The user command for selecting the UI object may be a command input through various input means (e.g., a mouse, a keyboard, a touch pad, etc.) connected to the display apparatus 200 or a voice command corresponding to a voice spoken by the user.

As shown in fig. 2, the controller 250 includes at least one of a Random Access Memory 251 (RAM), a Read-Only Memory 252 (ROM), a video processor 270, an audio processor 280, other processors 253 (e.g., a Graphics Processing Unit (GPU), a Central Processing Unit 254 (CPU), a Communication Interface (Communication Interface), and a Communication Bus 256(Bus), which connects the respective components.

In some embodiments, RAM 251 is used to store temporary data for the operating system or other programs that are running.

In some embodiments, ROM252 is used to store instructions for various system boots.

In some embodiments, the ROM252 is used to store a Basic Input Output System (BIOS). The system is used for completing power-on self-test of the system, initialization of each functional module in the system, a driver of basic input/output of the system and booting an operating system.

In some embodiments, when the power-on signal is received, the display device 200 starts to power up, the CPU executes the system boot instruction in the ROM252, and copies the temporary data of the operating system stored in the memory to the RAM 251 so as to start or run the operating system. After the start of the operating system is completed, the CPU copies the temporary data of the various application programs in the memory to the RAM 251, and then, the various application programs are started or run.

In some embodiments, processor 254 is used to execute operating system and application program instructions stored in memory. And executing various application programs, data and contents according to various interactive instructions received from the outside so as to finally display and play various audio and video contents.

In some demonstrative embodiments, processor 254 may include a plurality of processors. The plurality of processors may include a main processor and one or more sub-processors. A main processor for performing some operations of the display apparatus 200 in a pre-power-up mode and/or operations of displaying a screen in a normal mode. One or more sub-processors for one operation in a standby mode or the like.

In some embodiments, the graphics processor 253 is used to generate various graphics objects, such as: icons, operation menus, user input instruction display graphics, and the like. The display device comprises an arithmetic unit which carries out operation by receiving various interactive instructions input by a user and displays various objects according to display attributes. And the system comprises a renderer for rendering various objects obtained based on the arithmetic unit, wherein the rendered objects are used for being displayed on a display.

In some embodiments, the video processor 270 is configured to receive an external video signal, and perform video processing such as decompression, decoding, scaling, noise reduction, frame rate conversion, resolution conversion, image synthesis, and the like according to a standard codec protocol of the input signal, so as to obtain a signal that can be displayed or played on the direct display device 200.

In some embodiments, video processor 270 includes a demultiplexing module, a video decoding module, an image synthesis module, a frame rate conversion module, a display formatting module, and the like.

The demultiplexing module is used for demultiplexing the input audio and video data stream, and if the input MPEG-2 is input, the demultiplexing module demultiplexes the input audio and video data stream into a video signal and an audio signal.

And the video decoding module is used for processing the video signal after demultiplexing, including decoding, scaling and the like.

And the image synthesis module is used for carrying out superposition mixing processing on the GUI signal input by the user or generated by the user and the video image after the zooming processing by the graphic generator so as to generate an image signal for display.

The frame rate conversion module is configured to convert an input video frame rate, such as a 60Hz frame rate into a 120Hz frame rate or a 240Hz frame rate, and the normal format is implemented in, for example, an interpolation frame mode.

The display format module is used for converting the received video output signal after the frame rate conversion, and changing the signal to conform to the signal of the display format, such as outputting an RGB data signal.

In some embodiments, the graphics processor 253 and the video processor may be integrated or separately configured, and when the graphics processor and the video processor are integrated, the graphics processor and the video processor may perform processing of graphics signals output to the display, and when the graphics processor and the video processor are separately configured, the graphics processor and the video processor may perform different functions, respectively, for example, a GPU + frc (frame Rate conversion) architecture.

In some embodiments, the audio processor 280 is configured to receive an external audio signal, decompress and decode the received audio signal according to a standard codec protocol of the input signal, and perform noise reduction, digital-to-analog conversion, and amplification processes to obtain an audio signal that can be played in a speaker.

In some embodiments, video processor 270 may comprise one or more chips. The audio processor may also comprise one or more chips.

In some embodiments, the video processor 270 and the audio processor 280 may be separate chips or may be integrated together with the controller in one or more chips.

In some embodiments, the audio output, under the control of controller 250, receives sound signals output by audio processor 280, such as: the speaker 286, and an external sound output terminal of a generating device that can output to an external device, in addition to the speaker carried by the display device 200 itself, such as: external sound interface or earphone interface, etc., and may also include a near field communication module in the communication interface, for example: and the Bluetooth module is used for outputting sound of the Bluetooth loudspeaker.

The power supply 290 supplies power to the display device 200 from the power input from the external power source under the control of the controller 250. The power supply 290 may include a built-in power supply circuit installed inside the display apparatus 200, or may be a power supply interface installed outside the display apparatus 200 to provide an external power supply in the display apparatus 200.

A user interface 265 for receiving an input signal of a user and then transmitting the received user input signal to the controller 250. The user input signal may be a remote controller signal received through an infrared receiver, and various user control signals may be received through the network communication module.

In some embodiments, the user inputs a user command through the control apparatus 100 or the terminal device 300, the user input interface responds to the user input through the controller 250 according to the user input, and the display device 200 responds to the user input through the controller 250.

In some embodiments, a user may enter user commands on a Graphical User Interface (GUI) displayed on the display 275, and the user input interface receives the user input commands through the Graphical User Interface (GUI). Alternatively, the user may input the user command by inputting a specific sound or gesture, and the user input interface receives the user input command by recognizing the sound or gesture through the sensor.

In some embodiments, a "user interface" is a media interface for interaction and information exchange between an application or operating system and a user that enables conversion between an internal form of information and a form that is acceptable to the user. A commonly used presentation form of the User Interface is a Graphical User Interface (GUI), which refers to a User Interface related to computer operations and displayed in a graphical manner. It may be an interface element such as an icon, window, control, etc. displayed in the display of the electronic device, where the control may include a visual interface element such as an icon, button, menu, tab, text box, dialog box, status bar, navigation bar, Widget, etc.

The memory 260 includes a memory storing various software modules for driving the display device 200. Such as: various software modules stored in the first memory, including: at least one of a basic module, a detection module, a communication module, a display control module, a browser module, and various service modules.

The base module is a bottom layer software module for signal communication between various hardware in the display device 200 and for sending processing and control signals to the upper layer module. The detection module is used for collecting various information from various sensors or user input interfaces, and the management module is used for performing digital-to-analog conversion and analysis management.

For example, the voice recognition module comprises a voice analysis module and a voice instruction database module. The display control module is used for controlling the display to display the image content, and can be used for playing the multimedia image content, UI interface and other information. And the communication module is used for carrying out control and data communication with external equipment. And the browser module is used for executing a module for data communication between browsing servers. And the service module is used for providing various services and modules including various application programs. Meanwhile, the memory 260 may store a visual effect map for receiving external data and user data, images of various items in various user interfaces, and a focus object, etc.

Fig. 3 exemplarily shows a block diagram of a configuration of the control apparatus 100 according to an exemplary embodiment. As shown in fig. 3, the control device 100 includes a controller 110, a communication interface 130, a user input/output interface, a memory, and a power supply.

The control apparatus 100 is configured to control the display device 200 and may receive an input operation instruction of a user and convert the operation instruction into an instruction recognizable and responsive by the display device 200, serving as an interaction intermediary between the user and the display device 200. Such as: the user operates the channel up/down key on the control device 100, and the display device 200 responds to the channel up/down operation.

In some embodiments, the control device 100 may be a smart device. Such as: the control apparatus 100 may install various applications that control the display device 200 according to user demands.

In some embodiments, as shown in fig. 1, the terminal device 300 or other intelligent electronic device may function similarly to the control apparatus 100 after installing an application for manipulating the display device 200. Such as: the user may implement the function of controlling the physical keys of the apparatus 100 by installing an application, various function keys or virtual buttons of a graphical user interface available on the terminal device 300 or other intelligent electronic devices.

The controller 110 includes a processor 112 and RAM 113 and ROM 114, a communication interface 130, and a communication bus. The controller is used for controlling the operation of the control device 100, as well as the communication cooperation among the internal components and the external and internal data processing functions.

The communication interface 130 enables communication of control signals and data signals with the display apparatus 200 under the control of the controller 110. Such as: the received user input signal is transmitted to the display apparatus 200. The communication interface 130 may include at least one of a WiFi chip 131, a bluetooth module 132, an NFC module 133, and other near field communication modules.

A user input/output interface 140, wherein the input interface includes at least one of a microphone 141, a touch pad 142, a sensor 143, keys 144, and other input interfaces. Such as: the user can realize a user instruction input function through actions such as voice, touch, gesture, pressing, and the like, and the input interface converts the received analog signal into a digital signal and converts the digital signal into a corresponding instruction signal, and sends the instruction signal to the display device 200.

The output interface includes an interface that transmits the received user instruction to the display apparatus 200. In some embodiments, the interface may be an infrared interface or a radio frequency interface. Such as: when the infrared signal interface is used, the user input instruction needs to be converted into an infrared control signal according to an infrared control protocol, and the infrared control signal is sent to the display device 200 through the infrared sending module. The following steps are repeated: when the rf signal interface is used, a user input command needs to be converted into a digital signal, and then the digital signal is modulated according to the rf control signal modulation protocol and then transmitted to the display device 200 through the rf transmitting terminal.

In some embodiments, the control device 100 includes at least one of a communication interface 130 and an input-output interface 140. The control device 100 is configured with a communication interface 130, such as: the WiFi, bluetooth, NFC, etc. modules may transmit the user input command to the display device 200 through the WiFi protocol, or the bluetooth protocol, or the NFC protocol code.

And a memory 190 for storing various operation programs, data and applications for driving and controlling the control apparatus 100 under the control of the controller. The memory 190 may store various control signal commands input by a user.

And a power supply 180 for providing operation power support for each element of the control device 100 under the control of the controller. A battery and associated control circuitry.

In some embodiments, the system may include a Kernel (Kernel), a command parser (shell), a file system, and an application program. The kernel, shell, and file system together make up the basic operating system structure that allows users to manage files, run programs, and access the system. After power-on, the kernel is started, kernel space is activated, hardware is abstracted, hardware parameters are initialized, and virtual memory, a scheduler, signals and interprocess communication (IPC) are operated and maintained. And after the kernel is started, loading the Shell and the user application program. The application program is compiled into machine code after being started, and a process is formed.

Referring to fig. 4, in some embodiments, the system is divided into four layers, which are an Application (Applications) layer (abbreviated as "Application layer"), an Application Framework (Application Framework) layer (abbreviated as "Framework layer"), an Android runtime (Android runtime) and system library layer (abbreviated as "system runtime library layer"), and a kernel layer from top to bottom.

In some embodiments, at least one application program runs in the application program layer, and the application programs can be Window (Window) programs carried by an operating system, system setting programs, clock programs, camera applications and the like; or may be an application developed by a third party developer such as a hi program, a karaoke program, a magic mirror program, or the like. In specific implementation, the application packages in the application layer are not limited to the above examples, and may actually include other application packages, which is not limited in this embodiment of the present application.

The framework layer provides an Application Programming Interface (API) and a programming framework for the application program of the application layer. The application framework layer includes a number of predefined functions. The application framework layer acts as a processing center that decides to let the applications in the application layer act. The application program can access the resources in the system and obtain the services of the system in execution through the API interface.

As shown in fig. 4, in the embodiment of the present application, the application framework layer includes a manager (Managers), a Content Provider (Content Provider), a View System (View System), and the like, where the manager includes at least one of the following modules: an Activity Manager (Activity Manager) is used for interacting with all activities running in the system; the Location Manager (Location Manager) is used for providing the system service or application with the access of the system Location service; a Package Manager (Package Manager) for retrieving various information related to an application Package currently installed on the device; a Notification Manager (Notification Manager) for controlling display and clearing of Notification messages; a Window Manager (Window Manager) is used to manage the icons, windows, toolbars, wallpapers, and desktop components on a user interface.

In some embodiments, the activity manager is to: managing the life cycle of each application program and the general navigation backspacing function, such as controlling the exit of the application program (including switching the user interface currently displayed in the display window to the system desktop), opening, backing (including switching the user interface currently displayed in the display window to the previous user interface of the user interface currently displayed), and the like.

In some embodiments, the window manager is used to manage all window processes, such as obtaining display size, determining if there is a status bar, locking the screen, intercepting the screen, controlling display window changes (e.g., zooming out, dithering, distorting, etc.) and the like.

In some embodiments, the system runtime layer provides support for the upper layer, i.e., the framework layer, and when the framework layer is accessed, the android operating system runs the C/C + + library included in the system runtime layer to implement the functions to be implemented by the framework layer.

In some embodiments, the kernel layer is a layer between hardware and software. As shown in fig. 4, the core layer includes at least one of the following drivers: audio drive, display drive, bluetooth drive, camera drive, WIFI drive, USB drive, HDMI drive, sensor drive (such as fingerprint sensor, temperature sensor, touch sensor, pressure sensor, etc.), and so on.

In some embodiments, the kernel layer further comprises a power driver module for power management.

In some embodiments, software programs and/or modules corresponding to the software architecture of fig. 4 are stored in the first memory or the second memory shown in fig. 2 or 3.

In some embodiments, taking the magic mirror application (photographing application) as an example, when the remote control receiving device receives a remote control input operation, a corresponding hardware interrupt is sent to the kernel layer. The kernel layer processes the input operation into an original input event (including information such as a value of the input operation, a timestamp of the input operation, etc.). The raw input events are stored at the kernel layer. The application program framework layer obtains an original input event from the kernel layer, identifies a control corresponding to the input event according to the current position of the focus and uses the input operation as a confirmation operation, the control corresponding to the confirmation operation is a control of a magic mirror application icon, the magic mirror application calls an interface of the application framework layer to start the magic mirror application, and then the kernel layer is called to start a camera driver, so that a static image or a video is captured through the camera.

In some embodiments, for a display device with a touch function, taking a split screen operation as an example, the display device receives an input operation (such as a split screen operation) applied to a display by a user, and the kernel layer may generate a corresponding input event according to the input operation and report the event to the application framework layer. The window mode (such as multi-window mode) corresponding to the input operation, the position and size of the window and the like are set by an activity manager of the application framework layer. And the window management of the application program framework layer draws a window according to the setting of the activity manager, then sends the drawn window data to the display driver of the kernel layer, and the display driver displays the corresponding application interface in different display areas of the display.

In some embodiments, as shown in fig. 5, the application layer containing at least one application may display a corresponding icon control in the display, such as: a live television application icon control, a Video On Demand (VOD) application icon control, a media center application icon control, an application center icon control, a game application icon control, and the like.

In some embodiments, the live television application may provide live television via different signal sources. For example, a live television application may access input providing television signals from cable television, radio broadcasts, satellite services, or other types of live television services. And, the live television application may display video of the live television signal on the display device 200.

In some embodiments, a video-on-demand application may provide video from different storage sources. Unlike live television applications, video on demand provides a video display from some storage source. For example, the video on demand may come from a server side of the cloud storage, from a local hard disk storage containing stored video programs.

In some embodiments, the media center application may provide various applications for multimedia content playback. For example, a media center, which may be other than live television or video on demand, may provide services that a user may access to various images or audio through a media center application.

In some embodiments, an application center may provide storage for various applications. The application may be a game, an application, or some other application associated with a computer system or other device that may be run on the smart television. The application center may obtain these applications from different sources, store them in local storage, and then be operable on the display device 200.

The above embodiments describe the hardware/software architecture and functional implementation of a conventional display device. The difference between the laser television and the conventional television is mainly in the imaging mode of a screen picture, the laser television separates a video signal into image signals of three primary colors of RGB, respectively controls a semiconductor laser generator of the three primary colors of RGB to emit laser with corresponding intensity, and projects laser beams onto a screen based on an ultra-short-focus projection technology after modulation output and signal synchronous control, so that a user can watch a projection picture. Other hardware/software configurations of the laser television can be adapted to conventional televisions or existing laser television products, and the same or similar parts are not described in detail herein.

Because the laser television adopts laser projection imaging, a projection picture may exceed or be smaller than a frame-defined range of a screen frame, so that the area deviation of the projection picture and a screen is large in vision, and the projection display effect is reduced.

Fig. 6 to 9 show UI operations of the conventional automatic geometry correction. The laser television is generally configured with a geometric correction application 1, after a user opens the geometric correction application 1 in a Settings menu, an operation guidance page as shown in fig. 6 is displayed, and operation instruction information and a two-dimensional code are displayed in the operation guidance page, for example, "scan a two-dimensional code below a terminal and operate according to a prompt," automatic geometric correction is implemented on the premise that the laser television and a terminal device must be in the same local area network (WiFi) to enable communication connection between the laser television and the terminal device, so that the terminal is used to cooperate with the laser television to correct a projection picture.

The terminal equipment can be a mobile terminal such as a mobile phone and a tablet personal computer, so that a user can conveniently hold the terminal by hand, the image collector of the terminal is adjusted to be aligned to the screen of the laser television, and a rear camera is generally adopted by the image collector of the terminal. When the laser television and the terminal are both in the same WiFi networking state, the user can scan the two-dimensional code in fig. 6 through a browser in the terminal device or other applications with two-dimensional code scanning functions, such as WeChat, QQ, and the like, and after the code scanning is successful, the communication connection between the terminal and the laser television is automatically established, and at this time, the laser television can be switched from the operation guidance page to the display interface of the correction graphic card shown in fig. 7. The dotted line in fig. 7 is the boundary of the current projection picture, and the graphic card generally includes a plurality of cross feature points arranged in an array within the projection range, and it is obvious that the projection picture has exceeded the framing range of the screen frame, and the outside of the screen frame has the out-of-limit cross feature points, which meet the conditions for performing geometric correction. Corresponding correction parameters can be given through the distribution of the cross feature points and the frame of the screen.

When the terminal device successfully scans the two-dimensional code, the link address corresponding to the two-dimensional code is identified, so that the page shown in fig. 8 is skipped, and the page shown in fig. 8 has operation information prompting the user to perform matching correction, such as "please shoot a picture card picture transversely at about 3 meters right in front of the television screen and upload", and prompt the user to pay attention to "please ensure that the television screen and the picture card are shot completely", that is, ensure that the screen frame and the picture card edge in fig. 7 are shot, so as to ensure the accuracy of subsequent correction. An image acquisition window is arranged in the middle of the image acquisition window, after a user clicks the '+' in the image acquisition window, an image preview shooting interface can be automatically popped up, the angle and the position of the rear camera are adjusted by the user to be aligned with the correction chart, the correction chart is completely captured through previewing, and then a shooting key of the camera can be clicked to shoot an image of the correction chart. As shown in fig. 9, the shot image is directly displayed in the image acquisition window, the user can check the shooting effect of the image, if the user confirms, the user clicks the "completion" control in fig. 9, and the terminal automatically uploads the shot image to the laser television terminal; if the user clicks the cancel control, the previously shot image is removed from the image acquisition window, the terminal restores the display interface of fig. 8, and the user can shoot the correction chart again until a satisfactory shooting effect is achieved.

After the laser television receives the image of the graphic card uploaded by the terminal, the image of the graphic card is processed by using a relevant image processing technology, such as image binarization, edge detection, geometric transformation and the like, then the coordinate distribution of the cross feature points is found out, the coordinates of the cross feature points can be processed and transformed, and finally the correction parameters are calculated. And the laser television calls a bottom layer interface and transmits the correction parameters to related hardware, so that the laser signal is corrected. After the correction is finished, the projection picture displayed on the television screen is updated, a user watches the projection picture to determine whether the correction effect is satisfied, if the user is satisfied, the correction can be finished, and the geometric correction application 1 is quitted; if the user is still unsatisfied with the corrected projection picture, the aforementioned correction operation is repeatedly performed in the page in fig. 8 until a satisfactory effect is achieved.

According to the existing automatic geometric correction scheme, a mobile terminal shoots a projection correction graphic card displayed on a screen of a laser television, then the projection correction graphic card is sent to the laser television, and the laser television carries out image processing on the graphic card and then gives correction parameters; on the other hand, the operation pressure of the laser television is increased, and the correction scheme requires more manual operations matched with the user, so that better and more automatic correction operation experience cannot be brought to the user.

In order to solve the above technical problem, in some embodiments of the present application, as shown in fig. 10, a software architecture of the correction procedure may involve three links of the display device 200, the terminal device 300, and the server 400.

In some embodiments, the display device 200 (i.e., the laser television side) includes at least an underlying hardware interface, a connection layer, a control layer, and a UI layer; the UI layer is used to display pages such as an operation guidance page and a correction chart in the geometry correction application 1; the connection layer implements communication connection between the display device 200 and the terminal device 300, such as TCP (Transmission Control Protocol) connection, and is configured to receive the correction parameter calculated and sent by the terminal device 300; the control layer is used for realizing UI control, connection control and correction control, and comprises a correction request receiving a user, control of display and update of a correction chart card, analysis of correction parameters and transmission of the correction parameters to a bottom hardware interface, so that the control hardware corrects the laser signals.

In some embodiments, the server 400 is used for training and storing the correction parameter calculation model, providing an access portal of the terminal correction page and a related js (javascript) script library, and storing a related graphic card, and the like. The deep learning model takes a correction graph card as input and calculates and outputs correction parameters through the model; the correction page is a page displayed by the acquisition correction chart when the terminal device 300 cooperates with the correction. After the terminal device 300 establishes the TCP connection with the display device 200, it needs to load resources such as a correction page, a deep learning model, a JS script library, and the like from the server 400 to the local memory, and then formally start the correction process. According to the method and the system, resources such as the training model and the JS script for correcting the parameters are preset in the server 400, and only the resources need to be loaded to the memory when the terminal equipment 300 is used, so that the storage burden of the terminal equipment 300 can be relieved, and the running performance of the terminal equipment 300 is not affected. Wherein, the correction parameter calculation model can adopt a deep learning model.

In some embodiments, the terminal device 300 communicates with the display device 200 and the server 400, respectively, and the terminal device 300 and the display device 200 need to be in the same local area network. For example, the display device 200 may send the broadcast packet in UDP periodically so that other devices connected to the same lan can receive the broadcast packet to request a communication connection with the other devices. That is to say, the terminal device 300 also receives the broadcast packet, and establishes a TCP connection with the display device 200 according to the broadcast packet, and after the TCP connection is successful, the terminal device 300 loads resources such as a correction page, a deep learning model, a JS script library, and the like from the server 400 to the local memory, and then automatically takes a correction graphic card by using the local rear-facing camera; preprocessing the correction chart, recognizing a screen frame in the correction chart, performing affine transformation and the like on the screen frame, calculating correction parameters by using a deep learning model, and sending the correction parameters to the display device 200. The terminal device 300 may have the geometry correction application 2 installed therein, and the terminal device 300 may perform a relevant correction procedure by controlling the geometry correction application 2. The geometric correction application 1 in the display device 200 and the geometric correction application 2 in the terminal device 300 are matched with each other, so that linkage correction between the display device 200 and the terminal device 300 is realized, automatic and efficient geometric correction of a projection picture is realized, and the display effect of the projection picture is improved.

In some embodiments, as the interactive logic diagram shown in fig. 11, the following describes the correction logic for implementing the linkage coordination of the display device 200, the terminal device 300, and the server 400:

(A) display device 200 side: the user starts the geometry correction application 1 in the Settings menu (this action is named as the first correction operation in this application), which corresponds to the initiation of a correction request; after the geometry correction application 1 is started, the controller 250 controls the display 275 to display an operation guidance page, and sends a UDP (User Datagram Protocol) broadcast packet to the terminal device 300 at regular time, where the broadcast packet includes identification information of the display device 200, and the identification information includes, for example, an MAC address, an IP address, and/or a device name, so that the terminal device 300 can identify a device initiating a connection request, and after establishing a TCP connection with the terminal device 300, the display 275 displays a correction map card; as shown in fig. 12, in the present application, only prompt information is displayed in the operation guidance page, for example, "please open the geometry correction application 2 of the terminal and start the coordination correction of the terminal," and the user checks the prompt information, that is, the geometry correction application 2 can be started at the terminal device 300 (this action operation is named as a second correction operation in the present application), the operation guidance page of fig. 12 does not include a two-dimensional code, that is, the display device 200 and the terminal device 300 are not connected in a manner of scanning the two-dimensional code in the present application, but the display device 200 and the terminal device 300 must be in a networked state under the same WiFi.

(B) Terminal equipment 300 side: after the geometry correction application 2 is started, receiving a broadcast packet sent by the display device 200, and analyzing the identification information of the display device 200 contained in the broadcast packet; adding the identification information of the display device 200 into a device list, wherein the device list stores identification information of a plurality of devices in the same network with the terminal device 300, the device list is in a dynamic updating state, and when a device sends a connection request to the terminal device 300 in the same WiFi scene, the identification information of the device is recorded in the device list, so that a user can select a connection object from the device list conveniently; the terminal device 300 pops up a device list as shown in fig. 13 on the application interface, the identification information of all devices of which the connection has been currently initiated is shown in the device list, the user selects the identification information of the display device 200 in the device list, and the terminal device 300 establishes the TCP connection with the selected display device 200 in response to the selection operation of the user. For example, the device list shown in fig. 13 includes three devices, the device names are laser TV1, laser TV2, and laser TV3, respectively, and when the user wants to correct the projection screen of laser TV1, the user clicks on laser TV1 to obtain the selected focus of laser TV1, and then clicks on the "confirm correct" control, laser TV1 becomes the target of correction.

(C) Terminal equipment 300 side: loading resources such as a deep learning model and a JS script library from the server 400 end to a local memory, loading resources of a correction page from the server 400 end, and controlling a display of the local end to display the correction page as shown in fig. 14, wherein the correction page in fig. 14 comprises a first control, a second control and a window; after all resources are loaded, the JS script automatically starts the rear camera of the terminal device 300, shooting preview is started, a picture of the shooting preview of the correction chart card is always displayed in a window of the correction page, a user can adjust the shooting position/angle of the rear camera through the window preview, then the rear camera automatically collects images of one frame of the correction chart card every preset period, and sends the collected image frames to a controller in the terminal device 300 for image processing and correction parameter calculation. Because use the JS script after the loading correction page to automatically start the rear camera to the rear camera can shoot the picture card image at the automatic timing, so the user only needs to adjust the rear camera just to the television screen, and guarantee the completeness of screen and picture card can, need not to carry out other extra operations, promoted user experience.

(D) Terminal equipment 300 side: the correction graph card is preprocessed by using OpenCV.JS, wherein the preprocessing can comprise image processing modes such as denoising, binarization, edge detection and the like, and in addition, user privacy information related to the image can be removed through preprocessing, so that the user privacy is protected, the safety during image display is improved, the preprocessing process can be realized by referring to the prior art, and the details are not repeated in the embodiment; then judging whether a screen frame is identified in the preprocessed correction chart; if the screen frame is not identified in the current frame, the correction parameters cannot be calculated, the current frame belongs to an invalid picture card, the invalid picture card can be filtered, and the correction picture card is continuously collected and executed; if the screen frame meeting the condition can be identified in the current frame, wherein the condition is, for example, the constraint from the screen size, the current frame belongs to an effective graphic card, and affine transformation is carried out on the screen frame identified in the correction graphic card after the current preprocessing; the correction chart obtained after the affine transformation processing is input to the deep learning model to be calculated, the correction parameters are output by the deep learning model, and then the correction parameters are sent to the display device 200 through the TCP connection channel. The correction parameters are such as the vertex position of the projection plane, the midpoint position of each boundary on the projection plane and the like, and the range and the boundary of the projection plane are changed by adjusting the positions of the key points, so that the projection plane can be better matched with the screen frame, and the display effect of the projection picture is improved.

Since the user holds the terminal device 300 to adjust the rear camera, the manual operation cannot ensure that the photographed correction chart is forward, for example, the rear camera may have an inclination in a certain direction/angle, which may cause the screen frame in the correction chart to have an obvious skew or not to be a strict rectangle, which may present a parallelogram, which may cause the actual range of the screen frame to be identified inaccurately, and thus, the correction parameter cannot be calculated accurately. In contrast, affine transformation is carried out on the screen frame identified in the image of the image card, so that the screen frame in the corrected image card is transformed into a forward rectangle, and the accuracy and reliability of the calculation result of the deep learning model are improved. The affine transformation can be implemented by referring to the prior art, and the detailed description of the present application is omitted.

(E) Display device 200 side: receiving and analyzing the correction parameters sent by the terminal equipment 300, calling a bottom hardware interface, and transmitting the correction parameters to corresponding hardware, so that the hardware is controlled to correct the laser signals according to the correction parameters; then, generating a target graphic card based on the corrected laser signal; the display 275 is controlled to update and display the target graphic card, that is, the target graphic card replaces the graphic card before correction, so that the update of the correction graphic card is completed on the display device side.

(F) Terminal equipment 300 side: controlling the rear camera to collect the target graphic card and controlling a window in the correction page to display the target graphic card, so that a user can visually judge whether the correction enables the projection picture to reach the satisfactory effect or not by seeing the corrected and updated target graphic card; if the user is satisfied with the correction effect, triggering a first control in the correction page, that is, "satisfied" in fig. 14, thereby ending the current correction flow, the terminal device 300 may exit the geometry correction application 2, and the display device 200 may exit the geometry correction application 1 as well; if the user is not satisfied with the correction effect, a second control in the correction page is triggered, namely, the image of the target graphic card is corrected again according to the steps (D) to (F) until the effect satisfied by the user is achieved, namely, the image is corrected again in the step 14.

In some embodiments, the terminal device 300 should include at least a display for displaying the correction page, a communicator for communicatively connecting the display device 200 and the server 400, and a controller configured to execute a control flow in the projection screen correction method referred to at the terminal device 300 side. The other hardware and software configurations of the terminal device 300 are not limited.

Embodiments of a display device, a method for correcting a projection picture executed in a display device, a terminal device, and a method for correcting a projection picture executed in a terminal device may refer to the corresponding embodiments with each other, and for details, refer to the foregoing related descriptions, which are not repeated herein. In addition, the image processing process of the correction chart is not limited in the application, and the method for calculating the correction parameters is not limited to the deep learning model, and the calculation model of the correction parameters can be flexibly formulated in the server 400 according to the practical application. The UI provided in this application is merely exemplary, particularly subject to actual product configuration and application.

According to the technical scheme, the projection picture of the laser television is corrected through linkage cooperation among the multi-terminal devices, after the display device end receives the first correction operation, the first correction operation is that the geometric correction application 1 in the display device is started, the operation guide page is displayed, after the user sees the indication of the operation guide page, the second correction operation is input in the terminal device, the second correction operation is that the geometric correction application 2 in the terminal is started, and then the communication connection between the display device and the terminal is achieved through the device list without scanning the two-dimensional code. At this time, the display device end projects and displays the correction chart, an image collector (namely a rear camera) in the terminal shoots an image of the correction chart, then a series of image processing is carried out on the correction chart so as to improve the calculation precision of the correction parameters, then the correction parameters are calculated in the terminal according to the correction chart and sent to the display device, and the display device can directly use the correction parameters to correct the laser signals, so that the picture projection effect is improved. According to the method, the manual correction of a user is not needed, the terminal collects and corrects the graphic card, the graphic card is not sent to the display device, the correction parameters are directly calculated at the terminal according to the graphic card, time consumption in transmission of the graphic card is eliminated, the correction parameters are not needed to be calculated at the display device, the operation pressure of the display device is reduced, the display device can realize quick correction according to the parameters fed back by the terminal, the correction efficiency, the accuracy and the correction effect of the projection picture of the laser television are improved, the user operation is simpler and faster, and the user experience is improved.

Those skilled in the art will readily appreciate that the techniques of the embodiments of the present invention may be implemented as software plus a required general purpose hardware platform. In a specific implementation, the invention also provides a computer storage medium, which can store a program. When the computer storage medium is located in the display device 200, the program may include the program steps involved in the aforementioned projection picture correction method that the controller 250 is configured to perform when executed; when the computer storage medium is located in the terminal device 300, the program when executed may include program steps involved in a projection picture correction method that a controller in the terminal device 300 is configured to perform. The computer storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM) or a Random Access Memory (RAM).

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. The specification and examples are to be regarded in an illustrative manner only and are not intended to limit the scope of the present invention. With a true scope and spirit of the invention being indicated by the following claims.

Claims

1. A terminal device, comprising:

a display for displaying a correction page;

a controller configured to perform:

2. The terminal device according to claim 1, wherein after establishing the communication connection with the display device, the controller is further configured to perform:

3. The terminal device of claim 1, wherein prior to calculating correction parameters from the correction chart, the controller is further configured to perform:

4. A terminal device according to claim 3, wherein the controller is configured to calculate the correction parameter as follows:

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

controlling the window to display the target graphic card;

6. The terminal device of claim 1, wherein the controller is configured to establish a communication connection with the display device as follows:

receiving a broadcast packet sent by the display device;

7. A display device, comprising:

a controller configured to perform:

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

generating a target graphic card based on the corrected laser signal;

9. A method for correcting a projection picture in a terminal device is characterized by comprising the following steps:

10. A method of correcting a projection picture in a display device, comprising: