A method for adjusting the image quality of a display device and the display device itself.

Abstract

This application provides a method for adjusting the image quality of a display device and a display device in general. The method includes: abstracting the user as an abstract point and detecting the positional relationship between the abstract point and the screen, specifically detecting the positional relationship between the abstract point and different screen partitions. Then, based on the positional relationship between different screen partitions and the abstract point, image quality parameters for different screen partitions are determined. Since the positional relationship between different screen partitions and the abstract point is different, the resulting image quality parameters for different screen partitions are also different. Finally, the image quality of the corresponding screen partition is adjusted according to the different image quality parameters. In this way, in scenarios where the display device has a large screen size, the image quality can be adjusted separately according to the positional relationship between different screen partitions and the user, avoiding uniform image quality adjustment for different areas of the screen and presenting the user with diverse image quality adjustment effects.

Description

Technical Field

[0001] This invention relates to the field of display technology, and in particular to a method for adjusting the image quality of a display device and a display device thereof. Background Technology

[0002] A display device is a terminal device capable of outputting a specific display image. A display device provides a user interface (UI) for interactive operation on a screen. The UI can display different application display areas, which are used to display text and graphic interactive information. Users can adjust the image quality based on their interaction with the display device.

[0003] When users view a display device, the image quality they require differs depending on their viewing distance. For example, when close to the screen, the screen needs to display details clearly, while when far away, such details are less important. Furthermore, due to the large size of display devices, different areas of the screen vary significantly in distance from the user, resulting in different image quality requirements for different areas.

[0004] Currently, there is no display device that can adjust the image quality of the screen display based on the distance between the user and the screen in scenarios with larger screen sizes. Summary of the Invention

[0005] This application provides a method for adjusting the image quality of a display device and a display device that can be applied to scenarios with large screen sizes, enabling the adjustment of the image quality displayed on the screen based on the distance between the user and the screen.

[0006] In a first aspect, some embodiments of this application provide a display device, including:

[0007] The monitor is configured to display images;

[0008] A location detection component is configured to detect the location state of an abstract point of the user and generate a status signal based on the location state.

[0009] The controller is configured as follows:

[0010] Determine the screen partitions of the screen, wherein the screen is divided into at least two screen partitions;

[0011] The status signal is obtained from the position detection component, and the positional relationship between different screen partitions and the abstract point is determined based on the status signal;

[0012] Based on the positional relationship between different screen partitions and the abstract point, the image quality parameters of different screen partitions are determined, and the image quality of the corresponding screen partitions is adjusted according to the determined different image quality parameters.

[0013] Secondly, some embodiments of this application provide a method for adjusting the image quality of a display device, including:

[0014] Determine the screen partitions of the screen, wherein the screen is divided into at least two screen partitions;

[0015] A status signal is obtained from the location detection component, and the positional relationship between different screen partitions and the abstract point is determined based on the status signal, wherein the status signal is a signal generated based on the position status, and the position status is the status information obtained by the location detection component from detecting the user's abstract point;

[0016] Based on the positional relationship between different screen partitions and the abstract point, the image quality parameters of different screen partitions are determined, and the image quality of the corresponding screen partitions is adjusted according to the determined different image quality parameters.

[0017] As can be seen from the above technical solutions, the display device and image quality adjustment method provided in the above embodiments abstract the user as an abstract point and detect the positional relationship between this abstract point and the screen, specifically the positional relationship between the abstract point and different screen partitions. Then, based on the positional relationship between different screen partitions and the abstract point, the image quality parameters of different screen partitions are determined. Since the positional relationship between different screen partitions and the abstract point is different, the obtained image quality parameters for different screen partitions are also different. Finally, the image quality of the corresponding screen partition is adjusted according to the different image quality parameters. In this way, in scenarios where the display device has a large screen size, the image quality can be adjusted separately according to the positional relationship between different screen partitions and the user, avoiding uniform image quality adjustment for different areas of the screen, and presenting users with diverse image quality adjustment effects. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram illustrating an operational scenario between a display device and a control device provided in an embodiment of this application.

[0020] Figure 2A hardware configuration block diagram of the control device 100 provided in the embodiments of this application;

[0021] Figure 3 A hardware configuration block diagram of a display device 200 provided in an embodiment of this application;

[0022] Figure 4 This is a software configuration diagram of the display device 200 provided in the embodiments of this application;

[0023] Figure 5 This is a schematic diagram illustrating a usage scenario of the display device 200 provided in an embodiment of this application.

[0024] Figure 6 This is a schematic diagram of the process by which a display device 200 performs a screen quality adjustment method according to an embodiment of this application.

[0025] Figure 7a A hardware connection block diagram of some functional modules for implementing the image quality adjustment method provided in the embodiments of this application;

[0026] Figure 7b A hardware connection block diagram of some functional modules for implementing a picture quality adjustment method according to an embodiment of this application;

[0027] Figure 8 This is a schematic diagram of the structure of a liquid crystal television provided in an embodiment of this application;

[0028] Figure 9 This is a schematic diagram of the backlight distribution provided in an embodiment of this application;

[0029] Figure 10 This is a schematic diagram illustrating the principle of millimeter-wave radar position detection provided in an embodiment of this application.

[0030] Figure 11 A schematic diagram illustrating the principle of determining the distance between an abstract point and a millimeter-wave radar, provided for embodiments of this application;

[0031] Figure 12 A schematic diagram illustrating another principle for determining the distance between an abstract point and a millimeter-wave radar, provided as an embodiment of this application;

[0032] Figure 13 A schematic diagram illustrating the principle of determining the projection point position as provided in an embodiment of this application;

[0033] Figure 14 A schematic diagram illustrating the process of determining image quality parameters based on the positional relationship between different screen partitions and abstract points, provided in an embodiment of this application.

[0034] Figure 15 This is a schematic diagram illustrating the fitting relationship between the first parameter coefficient and the vertical distance provided in an embodiment of this application.

[0035] Figure 16 This is a schematic diagram showing the corresponding positions of the initial parameters provided in the embodiments of this application;

[0036] Figure 17 A schematic diagram illustrating another principle for determining the position of a projection point, provided in an embodiment of this application;

[0037] Figure 18 A coordinate graph showing the relationship between the level of the second parameter coefficient and the second parameter coefficient provided in the embodiments of this application;

[0038] Figure 19 A schematic diagram illustrating the screen display effect after image quality adjustment, provided in an embodiment of this application.

[0039] Figure 20 A schematic diagram illustrating another principle for determining the distance between an abstract point and a millimeter-wave radar, provided as an embodiment of this application;

[0040] Figure 21 A schematic diagram illustrating another principle for determining the position of a projection point, provided in an embodiment of this application;

[0041] Figure 22 A schematic diagram illustrating another screen display effect after image quality adjustment, provided in an embodiment of this application.

[0042] Figure 23 A schematic diagram illustrating another screen display effect after image quality adjustment, provided in an embodiment of this application.

[0043] Figure 24 A schematic diagram illustrating another screen display effect after image quality adjustment, provided in an embodiment of this application.

[0044] Figure 25 A schematic diagram illustrating another screen display effect after image quality adjustment, provided in an embodiment of this application.

[0045] Figure 26 A flowchart illustrating the specific implementation of the screen image quality adjustment method for the display device 200 provided in this application embodiment. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of this application clearer, exemplary embodiments of this application will be clearly and completely described below in conjunction with the exemplary embodiments and corresponding drawings. Obviously, the described exemplary embodiments are only a part of the embodiments of this application, and not all of them.

[0047] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the implementation of some embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.

[0048] The terms "first," "second," "third," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar or related objects or entities, and do not necessarily imply a specific order or sequence, unless otherwise specified. It should be understood that such terms are interchangeable where appropriate.

[0049] The terms “comprising” and “having”, and any variations thereof, are intended to cover but not exclude inclusion, for example, a product or device that includes a range of components is not necessarily limited to all of the components that are clearly listed, but may include other components that are not clearly listed or that are inherent to such product or device.

[0050] The display device provided in this application can have various implementation forms, such as a television, a smart television, a laser projection device, a monitor, an electronic bulletin board, an electronic table, etc. Figure 1 and Figure 2 This is one specific embodiment of the display device of this application.

[0051] Figure 1 This is a schematic diagram illustrating an operational scenario between a display device and a control device in an exemplary embodiment of this application. Figure 1 As shown, the user can operate the display device 200 through the mobile terminal 300 and the control device 100.

[0052] In some embodiments, the control device 100 may be a remote control. Communication between the remote control and the display device includes infrared protocol communication, Bluetooth protocol communication, and other short-range communication methods, controlling the display device 200 wirelessly or via wired means. Users can control the display device 200 by inputting user commands through buttons on the remote control, voice input, control panel input, etc.

[0053] In some embodiments, a smart device 300 (such as a mobile terminal, tablet computer, computer, laptop computer, etc.) may also be used to control the display device 200. For example, an application running on the smart device may be used to control the display device 200.

[0054] In some embodiments, the display device may receive instructions not through the aforementioned smart devices or control devices, but through touch or gestures.

[0055] In some embodiments, the display device 200 can also be controlled in ways other than the control device 100 and the smart device 300. For example, it can be controlled by directly receiving the user's voice commands through a module configured inside the display device 200 for acquiring voice commands, or it can be controlled by receiving the user's voice commands through a voice control device set outside the display device 200.

[0056] In some embodiments, the display device 200 also communicates with the server 400. The display device 200 may communicate via a local area network (LAN), wireless local area network (WLAN), and other networks. The server 400 may provide various content and interactive features to the display device 200. The server 400 may be a cluster or multiple clusters, and may include one or more types of servers.

[0057] Figure 2 An exemplary block diagram of the hardware configuration of the control device 100 according to an exemplary embodiment is shown. Figure 2 As shown, 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 user input operation commands and convert them into commands that the display device 200 can recognize and respond to, thus acting as an intermediary for interaction between the user and the display device 200. Figure 3 The display device 200 includes at least one of the following: 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.

[0058] In some embodiments, the controller includes a processor, a video processor, an audio processor, a graphics processor, RAM, ROM, and a first to an nth interface for input / output. The display 260 includes a display screen assembly for presenting images, a driving assembly for driving image display, components for receiving image signals output from the controller, displaying video content, image content, and a menu control interface, as well as a user interface. The display 260 may be a liquid crystal display, an OLED display, or a projection display, and may also be a projection device and a projection screen.

[0059] The communicator 220 is a component used to communicate with external devices or servers according to various communication protocol types. For example, the communicator may include at least one of the following: a Wi-Fi module, a Bluetooth module, a wired Ethernet module, other network communication protocol chips or near-field communication protocol chips, and an infrared receiver. The display device 200 can establish the transmission and reception of control signals and data signals with the external control device 100 or the server 400 through the communicator 220.

[0060] The user interface can be used to receive control signals from the control device 100 (such as an infrared remote control).

[0061] Detector 230 is used to collect signals from the external environment or to interact with the external environment. For example, detector 230 includes a light receiver, a sensor for collecting ambient light intensity; or, detector 230 includes an image acquisition device, such as a camera, which can be used to collect external environmental scenes, user attributes, or user interaction gestures; or, detector 230 includes a sound acquisition device, such as a microphone, for receiving external sounds.

[0062] The external device interface 240 may include, but is not limited to, one or more of the following: High Definition Multimedia Interface (HDMI), analog or high-definition component input interface (component), composite video input interface (CVBS), USB input interface (USB), RGB port, etc. It may also be a composite input / output interface formed by multiple interfaces mentioned above.

[0063] The tuner / demodulator 210 receives broadcast television signals via wired or wireless means, and demodulates audio and video signals, such as EPG data signals, from multiple wireless or wired broadcast television signals.

[0064] In some embodiments, 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.

[0065] The controller 250 controls the operation of the display device and responds to user operations through various software control programs stored in the memory. The controller 250 controls the overall operation of the display device 200. For example, in response to receiving a user command to select a UI object to display on the monitor 260, the controller 250 can execute operations related to the object selected by the user command.

[0066] In some embodiments, the controller includes at least one of a central processing unit (CPU), a video processor, an audio processor, a graphics processing unit (GPU), RAM (random access memory), ROM (read-only memory), a first to an nth interface for input / output, a communication bus, etc.

[0067] Users can input commands through a graphical user interface (GUI) displayed on the monitor 260, and the user input interface receives the user input commands through the GUI. Alternatively, users can input commands by entering specific sounds or gestures, and the user input interface receives the user input commands by recognizing the sounds or gestures through sensors.

[0068] A "user interface" is the medium through which an application or operating system interacts and exchanges information with the user. It converts information from its internal form to a form that the user can accept. A common form of user interface is the graphical user interface (GUI), which refers to a user interface related to computer operation displayed graphically. It can be an icon, window, control, or other interface element displayed on the screen of an electronic device. Controls can include visual interface elements such as icons, buttons, menus, tabs, text boxes, dialog boxes, status bars, navigation bars, and widgets.

[0069] like Figure 4 As shown, the display device system is divided into three layers, from top to bottom: the application layer, the middleware layer, and the hardware layer.

[0070] The application layer mainly includes commonly used applications on TVs, as well as the application framework. The commonly used applications are mainly browser-based applications, such as HTML5 apps, and native apps.

[0071] An application framework is a complete program model that has all the basic functions required by standard application software, such as file access, data exchange, etc., as well as the user interface for these functions (toolbar, status bar, menu, dialog box).

[0072] Native apps can support online or offline access, push notifications, or access to local resources.

[0073] The middleware layer includes various television protocols, multimedia protocols, and system components. Middleware can use the basic services (functions) provided by system software to connect different parts of application systems or different applications on the network, achieving resource sharing and function sharing.

[0074] The hardware layer mainly includes the HAL interface, hardware, and drivers. The HAL interface is a unified interface for all TV chips, with the specific logic implemented by each chip. The drivers mainly include: audio drivers, display drivers, Bluetooth drivers, camera drivers, Wi-Fi drivers, USB drivers, HDMI drivers, sensor drivers (such as fingerprint sensors, temperature sensors, pressure sensors, etc.), and power drivers.

[0075] In some embodiments, when a user uses the display device 200, the required image quality differs depending on whether the user is close to the screen or far from it. For example, when the user is close to the screen, the screen needs to display details clearly, thus requiring stronger noise reduction; when the user is far from the screen, details are less important, resulting in weaker noise reduction. If the display device 200 is large, the distance between different areas of the screen and the user varies significantly, leading to different image quality requirements for different areas of the screen.

[0076] For example, such as Figure 5 The diagram illustrates a usage scenario of the display device 200. The user is standing on the right side of the display device 200. Because the user is closer to the right side, the right side needs to display more detail, thus requiring enhanced noise reduction. Conversely, the user is farther from the left side, so the left side does not need to display more detail, and therefore does not require enhanced noise reduction. The display device 200 typically adjusts the image quality uniformly across all areas of the screen and cannot adjust the image quality separately based on the user's position relative to different areas of the screen.

[0077] In view of the above problems, some embodiments of this application provide a display device 200. To facilitate understanding of the technical solutions in some embodiments of this application, the steps are described in detail below with reference to some specific embodiments and accompanying drawings. Figure 6 Figure 7 is a schematic flowchart illustrating the image quality adjustment method performed by a display device 200 according to some embodiments of this application. Figure 7 is a hardware connection block diagram of some functional modules of the display device 200 according to some embodiments of this application.

[0078] like Figure 7a or Figure 7b As shown, the functional modules of the display device 200 involved in this method mainly include: a controller 250, a power supply, a backlight driver module, a TCON (Timer Control Register, logic board) module, a display 260, a position detection component, a memory, and an ambient light sensor. The functional modules mentioned above are only for illustrating the scheme description and are not intended to implement all the functional modules of this application.

[0079] The power supply module is the power output module for the entire display device 200, providing power to all modules of the display device 200. The backlight driver module provides different current outputs to the backlight devices of the monitor, controlling screen brightness and local dimming. The TCON module controls the screen display on the monitor and adjusts the screen display parameters.

[0080] like Figure 7a As shown, the position detection component may consist only of a radar component. The radar component detects the position of targets within a preset area. It transmits electromagnetic waves into the preset area and receives the echo signals reflected by the targets. The targets within the preset area are the users within that area. The radar component reports the echo signals reflected by the targets to the controller 250. The controller 250 processes the data returned by the radar component using an algorithm to calculate the target's position information, i.e., the positional relationship between the target and the display device 200. Here, the calculation of the target's position information is handled by the controller 250.

[0081] like Figure 7b As shown, the position detection component can also include a radar component and a signal processing module. The radar component is still used to detect the position status of targets within a preset area. The radar component emits electromagnetic waves into the preset area and receives the echo signals reflected by the targets. The targets within the preset area are the users within the preset area. The radar component transmits the echo signals reflected by the targets to the signal processing module. The signal processing module processes the data returned by the radar component using algorithms to calculate the target's position information and then reports it to the controller 250. Then, the controller 250 determines the positional relationship between the target and the display device 200 based on the target's position information reported by the signal processing module. Here, the calculation process of the target's position information is handled by the signal processing module. In this way, the controller 250 does not need to pay attention to the calculation process of the target's position information, thus reducing the computational burden on the controller 250.

[0082] In scenarios where the location detection component only includes a radar component, the radar component and the controller 250 can communicate, allowing the controller 250 to periodically acquire the echo signals received by the radar component. In scenarios where the location detection component includes both a radar component and a signal processing module, the signal processing module communicates with the controller 250. This allows the controller 250 to periodically query and parse the user's location information calculated by the signal processing module.

[0083] This application embodiment can also determine whether the user is within a preset area based on the user's location information.

[0084] Specifically, if the target is within a preset area, this can mean that the distance between the target and the display device 200 is within a preset distance range. For example, if the preset distance range is 0.5 meters to 3 meters, then if the distance between the user and the display device 200 is greater than 0.5 meters and less than 3 meters, it indicates that the user is within the preset area, and the process of adjusting the screen image quality as described in this application can be performed by detecting the positional relationship between the user and the display device 200. Conversely, if the distance between the user and the display device 200 is less than 0.5 meters or greater than 3 meters, it indicates that the user is not within the preset area, and the process of adjusting the screen image quality as described in this application can be omitted.

[0085] The memory stores parameters, such as image quality parameters and ambient light brightness parameters for the current scene. The ambient light sensor detects the brightness of the current environment.

[0086] It should be noted that the method of this application can be applied to the scenario where the screen image quality is determined for the first time after the display device 200 is started, or it can be applied to the scenario where the screen image quality is re-determined based on the screen image quality parameters before the user moves in front of the display device 200 after the screen is displayed with certain image quality parameters and the user's position after the user moves.

[0087] like Figure 6 As shown, in some embodiments of this application, the controller 250 is configured to perform the following steps S100-S400, the details of which are as follows:

[0088] Step S100: Determine the screen partitions of the screen, wherein the screen is divided into at least two screen partitions;

[0089] LCD (Liquid Crystal Display) has become the mainstream product in the current display field. The working principle of LCD is based on the electro-optic effect of liquid crystals. When electricity is applied, the liquid crystal molecules align in an orderly manner, allowing light to pass through smoothly; when electricity is de-energized, the arrangement of liquid crystal molecules becomes disordered, making it difficult for light to pass through. This achieves a light threshold-like control effect on light. Through the color matching function of color filters, it can produce images with different gray levels and various colors, ultimately presenting a rich and colorful display effect. However, because LCDs cannot emit light themselves, a backlight assembly that can achieve uniform light emission needs to be installed on the back of the LCD panel.

[0090] The backlight assembly is typically placed directly below the LCD panel. For example, as Figure 8In the schematic diagram of the LCD TV structure shown, the backlight assembly mainly consists of a backlight source, a light guide plate, etc. The backlight source mainly includes cold cathode fluorescent lamps and light-emitting diodes. The backlight sources are evenly distributed directly below the LCD panel. Therefore, the number of backlight sources used is related to the size of the LCD panel; that is, the number of backlight sources used is related to the screen size, and the larger the screen size, the more backlight sources are usually used. It can be seen that in this embodiment, when dividing the screen into zones, it is necessary to divide it according to the distribution of the backlight sources below the LCD panel.

[0091] Figure 9 This is a schematic diagram of the backlight distribution in an embodiment of this application, as shown below. Figure 9 As shown, the entire backlight matrix of this screen includes 135 backlights and comprises M partitions in direction A and N screen partitions in direction B. If M=3 and N=3, the screen is divided into 3 screen partitions in direction A and 3 screen partitions in direction B, that is, the screen is finally divided as follows. Figure 13 The nine screen partitions shown are Q1-Q9. This application embodiment can also divide the screen into other partitions. For example, if M=5 and N=3, the screen can be divided into five partitions in direction A and three partitions in direction B, resulting in a final screen partition of 15 partitions. This application embodiment also provides a function to set screen partitions, allowing users to manually set partitions according to their actual needs and then adjust the image quality of each partition based on the settings. For example, the backlight matrix in the above embodiment includes at least two screen partitioning methods. These two methods can be listed in the screen partitioning menu, and users can select one method by isomorphic selection.

[0092] As can be seen in this embodiment, different screen partitioning can be performed for screens with different backlight matrices. The above two screen partitioning methods assume that each screen partition is ultimately configured with the same number of backlights. In practical applications, the assumption of even backlight distribution can be disregarded, and screen partitioning can be performed without even backlight distribution, depending on the actual application. The screen partitioning can be pre-defined.

[0093] Step S200: Obtain the status signal from the position detection component, and determine the position between different screen partitions and the abstract point based on the status signal;

[0094] Step S300: Determine the image quality parameters of different screen partitions according to the positional relationship between the different screen partitions and the abstract point;

[0095] If the position detection component includes a radar component, the status signal is the echo signal received by the radar component and reflected by the user. The positional relationship between different screen partitions and the abstract point is determined based on the status signal. Specifically, the controller 250 calculates the position information of the abstract point based on the echo signal, and then determines the positional relationship between different screen partitions and the abstract point based on this position information. The position information of the abstract point includes angle information and distance information. The angle information is the angle of the user relative to the radar component, and the distance information is the distance of the user relative to the radar component.

[0096] If the position detection component includes a radar component and a signal processing module, then the status signal is the position information of the abstract point obtained by the signal processing module after processing the echo signal algorithm. The signal processing module reports the calculated position information to the controller 250, and then the controller 250 determines the positional relationship between different screen partitions and the abstract point based on this position information.

[0097] The radar component used in this embodiment can be a millimeter-wave radar. Millimeter-wave radar waveguides are characterized by their small size, light weight, and high spatial resolution. The small size and light weight of millimeter-wave radar make it a better fit for the display device 200 than other types of radar, thus meeting the requirements of the thin and light design of the display device 200. High spatial resolution indicates a stronger ability to identify targets, making it more effective for detecting targets within a preset area. Furthermore, millimeter-wave radar can identify multiple targets, making it suitable for applications in home environments where multiple users utilize the display device 200.

[0098] Millimeter-wave radar emits electromagnetic waves with a wide coverage area, which can cover the viewing area of ​​display device 200, i.e., the preset area. Therefore, millimeter-wave radar can fully detect targets within the preset area. Furthermore, when the millimeter-wave radar is running, controller 250 can acquire detection data from the millimeter-wave radar at regular time intervals.

[0099] Figure 10 This is a schematic diagram illustrating the position detection principle of a millimeter-wave radar according to an embodiment of this application. The millimeter-wave radar is installed within the bezel of the display device 200, typically at the center of the lower side of the screen. It can also be installed at other locations on the display device 200, provided the installation location allows it to transmit electromagnetic waves to a predetermined area of ​​the display device 200. The millimeter-wave radar can transmit FMCW (Frequency Modulated Continuous Wave) signals, whose instantaneous frequency changes linearly with time.

[0100] Millimeter-wave radar transmits continuous waves at different frequencies during frequency sweeping. There is a certain frequency difference between the echo reflected by the target and the transmitted signal. The distance information between the target and the millimeter-wave radar can be obtained by measuring the frequency difference.

[0101] Millimeter-wave radar is equipped with at least three receiving antennas, which are distributed vertically and horizontally within the radar system, meaning they are not aligned in a straight line. The physical basis of angle measurement by millimeter-wave radar lies in the linear propagation of electromagnetic waves in a homogeneous medium and the directivity of the radar antennas. Because the antennas are arranged linearly at equal intervals along the horizontal (or elevation) direction, for a target echo at a certain angle, there is a phase difference between the signals received by the multiple antennas. Millimeter-wave radar uses this phase difference and the fixed relationship between the target angle to perform angle measurement. Therefore, by simultaneously comparing the phase difference of the echo signals between multiple receiving antennas, the angle information of the target relative to the millimeter-wave radar can be obtained.

[0102] Based on the distance and angle information between the target and the millimeter-wave radar, the positional relationship between different screen partitions and the target can be obtained, that is, the positional relationship between different screen partitions and the user can be obtained.

[0103] For ease of explanation in this embodiment, the user is abstracted as an abstract point, and the positional relationship between the screen partition and the user is the relationship between the screen partition and the abstract point. Since the final image quality adjustment aims to improve the user's viewing experience, the method in this embodiment essentially adjusts the image quality based on the positional relationship between the user's eyes and the screen partition. Therefore, the abstract point here can be the midpoint of the line connecting the user's two eyes.

[0104] Based on the distance and angle information between the user and the millimeter-wave radar, the millimeter-wave radar is essentially used as the origin of a three-dimensional coordinate system. The specific location of the abstract point in this three-dimensional space can be obtained based on the distance and angle information between the abstract point and the origin. Furthermore, the positional relationship between each screen partition and the millimeter-wave radar is also original data determined at the factory of the display device 200; that is, the specific location of each screen partition in this three-dimensional space is also fixed data. Therefore, based on the position information of the abstract point in this three-dimensional space and the position information of each screen partition in this three-dimensional space, the positional relationship between each screen partition and the abstract point can be obtained.

[0105] Therefore, based on the above, the positional relationship may include vertical distance and non-vertical distance, whereby the vertical distance represents the projection distance of the abstract point onto the plane of the screen.

[0106] Figure 11 and Figure 12 A schematic diagram illustrating the principle of determining the distance between the abstract point and the millimeter-wave radar. Wherein, Figure 11 The view angle is the top view angle of the display device. Figure 12 The view angle is the side view angle of the display device.

[0107] like Figure 11 As shown, the positional relationship between the abstract point and the millimeter-wave radar includes: the straight-line distance between the abstract point and the millimeter-wave radar is R0 (the distance of the line connecting the abstract point and the center point of the millimeter-wave radar, the length of the line projected onto the plane (the plane perpendicular to the screen) where the center point of the millimeter-wave radar is located is R1, and the length of the line projected onto the plane (the plane perpendicular to the screen) where the abstract point is located is R2), and the horizontal angle between the line connecting the abstract point and the millimeter-wave radar and the center line of the millimeter-wave radar is θ.

[0108] like Figure 12 As shown, the positional relationship between the abstract point and the millimeter-wave radar also includes the vertical angle α between the line connecting the abstract point and the millimeter-wave radar and the center line of the millimeter-wave radar.

[0109] based on Figure 11 and Figure 12 The positional relationship between the abstract point and the millimeter-wave radar is shown in the diagram. Based on trigonometric relationships, the height of the abstract point relative to the millimeter-wave radar is H0 = R2 * sinα. The projection distance of the abstract point onto the plane of the screen is L0 = R1 * cosθ, where L0 is the vertical distance between the abstract point and the screen. Similarly, the horizontal distance between the abstract point and the millimeter-wave radar can be calculated as S0 = R1 * sinθ.

[0110] Since all screen partitions are on the same plane, the vertical distance between the abstract point and all screen partitions is the same. Therefore, the vertical distance between the abstract point and all screen partitions can be determined based on this projection distance. The vertical distance between the abstract point and all screen partitions is the projection distance L0.

[0111] After projecting the abstract point onto the screen containing the screen, a projection point is obtained. The distance between each screen partition and the millimeter-wave radar is a parameter known at the time of manufacture of the display device. Similarly, the distance between each screen partition is also a known parameter, where the distance between each screen can be the straight-line distance between the center points of each screen. Based on the horizontal distance S0, the height H0, and the distance between each screen, the non-perpendicular distance between the abstract point and each screen partition can be determined.

[0112] For example, such as Figure 13 As shown, for ease of explanation, assume that the projection point of a certain abstract point, determined by the horizontal distance S0 and height H0, coincides exactly with the center point of screen partition Q6. Therefore, the distance between screen partition Q1 and the projection point is exactly the straight-line distance between the center point of screen partition Q1 and the center point of screen partition Q6. Similarly, the distances between other screen partitions and the projection point are also the straight-line distances between the center point of each screen partition and the center point of screen partition Q6. That is, except for screen partition Q6, the non-perpendicular distances between other screen partitions and the abstract point are the straight-line distances between the center point of each screen partition and the center point of screen partition Q6.

[0113] Based on the above process for determining vertical and non-vertical distances, such as Figure 14 As shown, the controller 250 determines the image quality parameters of different screen partitions based on the positional relationship between different screen partitions and the abstract point, and performs the following steps:

[0114] Step S201: Determine the first parameter coefficient of all screen partitions based on the vertical distance, wherein the first parameter coefficient of all screen partitions is the same;

[0115] The first parameter coefficient is a picture quality parameter adjustment coefficient determined based on the vertical distance between the abstract point and the entire display screen; that is, the picture quality parameter adjustment coefficient is determined based on the vertical distance between the user and the entire display screen. As mentioned above, if the user is close to the screen, the screen needs to display more picture details, while if the user is far from the screen, the screen does not need to display more picture details.

[0116] The image quality parameters that need to be adjusted based on the user's distance from the screen can include: noise reduction (NR), super resolution (SR), and brightness. It should be noted that when adjusting screen image quality based on the user's distance, the adjustable image quality parameters are not limited to noise reduction, super resolution, and brightness; other image quality parameters can also be adjusted to present a better image quality.

[0117] In addition, to save computing resources, only one image quality parameter can be adjusted. For example, to quickly adjust the image quality, only the brightness parameter can be adjusted. In this embodiment, the screen's noise reduction parameter, super-resolution parameter, and brightness parameter can be adjusted by different modules. For example, the brightness parameter can be adjusted by the backlight driver module, and the super-resolution parameter and noise reduction parameter can be adjusted by the TCON module.

[0118] Noise reduction parameters primarily target image noise reduction. Digital images are often subject to noise interference from imaging equipment and the external environment during digitization and transmission. Image noise reduction can employ methods such as mean filters and median filters to filter out noise in the image. Image noise reduction can make the image display clearer and better reveal image details. Therefore, generally, the closer the user is to the screen, the stronger the noise reduction effect needs to be.

[0119] Super-resolution imaging is a method of image stretching that can process low-quality images into high-quality ones. It involves expanding the pixels in the original image based on their information, typically using sampling methods. In display devices, super-resolution involves stretching, comparing, and correcting the original image to output a more suitable image for display, ultimately enhancing visual clarity. Brightness, on the other hand, refers to screen brightness, the maximum luminance a screen can achieve under white light. Since LCD monitors rely on backlights for illumination, increasing screen brightness is primarily achieved by increasing the backlight brightness.

[0120] The display device system has a built-in fitting curve for image quality parameters, which is the proportional relationship between the adjustment coefficient of image quality parameters and the vertical distance between the user and the screen. Figure 15 The coordinate graph shown includes the noise reduction fitting curve, the super-resolution fitting curve, and the brightness fitting curve. For the sake of convenience in explaining the solution, the noise reduction fitting curve, the super-resolution fitting curve, and the brightness fitting curve are all presented as straight lines. Figure 15 In the coordinate graph shown, the horizontal axis represents the vertical distance between the user and the screen, and the vertical axis represents the first parameter coefficient of the image quality parameters, i.e., the adjustment ratio of each image quality parameter. In practical applications, since adjusting the image quality parameters may require consideration of factors beyond just the user's distance to the screen, the first parameter coefficient may not have a linear relationship with the distance. Therefore, the first parameter coefficient and the vertical distance between the user and the screen may not be as linear as... Figure 15 The relationship shown is not linear, but nonlinear.

[0121] like Figure 15 As shown, the noise reduction parameters, super-resolution parameters, and brightness parameters all have an initial parameter, which can be set by the user. Figure 16 The image quality parameters adapted to the initial position are shown. These initial parameters can be the default parameters set by the display device at the factory, i.e., when the user is in the initial position, the vertical distance between the user and the screen is L. c At this time, the noise reduction parameters, super-resolution parameters, and brightness parameters are all the initial parameters set by this default setting. The initial parameters for noise reduction, super-resolution, and brightness can be denoted as A, B, and C, respectively. Correspondingly, if the user's vertical distance from the screen is L... c When the first parameter coefficient is 1, that is, if the user's vertical distance from the screen is L... c At this time, there is no need to adjust the screen image quality based on the vertical distance. The first parameter coefficients of the noise reduction parameter, super-resolution parameter, and brightness parameter are denoted as x1, y1, and z1, respectively.

[0122] Based on the method described above for determining the vertical distance between the abstract point and the screen, the vertical distance L0 between the abstract point and the screen is determined. Then, based on the initial vertical distance L...c The relationship between the actual detected vertical distance L0 and the actual vertical distance L0, and based on, for example Figure 15 The noise reduction fitting curve, super-resolution fitting curve, and brightness fitting curve shown determine the first parameter coefficients of each image quality parameter. For example, according to the noise reduction fitting curve, the smaller the vertical distance between the abstract point and the screen, the larger the first parameter coefficient of the noise reduction parameter. That is, the greater the vertical distance between the user and the screen, the stronger the noise reduction effect required. The formula for calculating the first parameter coefficient of the noise reduction parameter is: Where m is the value at the intersection of the noise reduction fitting curve and the horizontal axis.

[0123] Based on the super-resolution fitting curve, it can be concluded that the smaller the vertical distance between the abstract point and the screen, the smaller the first parameter coefficient of the super-resolution parameters. In other words, the smaller the vertical distance between the user and the screen, the weaker the required super-resolution effect. The formula for calculating the first parameter coefficient of the super-resolution parameters is as follows: Where n is the absolute value of the intersection of the noise reduction fitting curve and the horizontal axis.

[0124] Based on the brightness fitting curve, it can be concluded that the smaller the vertical distance between the abstract point and the screen, the smaller the first parameter coefficient of the brightness parameter. In other words, the smaller the vertical distance between the user and the screen, the lower the required screen brightness. The formula for calculating the first parameter coefficient of the brightness parameter is as follows: Where p is the absolute value of the intersection of the brightness fitting curve and the horizontal axis.

[0125] Step S202: Determine the distance information between different screen partitions and projection points based on the non-perpendicular distance, and determine the second parameter coefficients of different screen partitions based on the distance information, wherein the projection point is the point obtained by projecting the abstract point onto the plane where the screen is located;

[0126] After determining the first parameter coefficients of all screen partitions based on the vertical distance between the abstract point and the screen, the distance information between different screen partitions and the projection point is then determined based on the non-vertical distance between different screen partitions and the projection point, and the second parameter coefficients of the screen partitions are then determined based on the distance information.

[0127] The first parameter coefficient is the adjustment ratio of the image quality parameters. The second parameter coefficient is the adjustment ratio for different screen partitions based on the first parameter coefficient, determined according to the distance between the different screen partitions and the user. The second parameter coefficient is a coefficient determined based on the non-perpendicular distance between the different screen partitions and the abstract point. After projecting the abstract point onto the plane of the screen, a projection point is obtained. Therefore, the distance information between the abstract point and different screen partitions is actually the straight-line distance between the projection point and the center point of the different screen partitions.

[0128] like Figure 13As shown, the projection point of a certain abstract point onto the plane of the screen coincides with the center point of screen partition Q6. The distance information between other screen partitions and the abstract point, besides screen partition Q6, is the straight-line distance between the center point of each screen partition and the center point of screen partition Q6. Then, the second parameter coefficient can be determined based on the different distances between each screen partition and the projection point.

[0129] In this embodiment, the screen partition closer to the projection point has a larger second parameter coefficient, and the screen partition farther from the projection point has a smaller second parameter coefficient. This means that the screen partition closer to the projection point has a stronger image quality parameter adjustment intensity, and the screen partition farther from the projection point has a weaker image quality parameter adjustment intensity. This allows for different adjustments to the image quality parameters of different screen partitions based on their actual distance from the user. Since the projection point falls on screen partition Q6, the second parameter coefficient of screen partition Q6 is the largest; for example, the second parameter coefficient of screen partition Q6 can be 100%. Screen partitions Q3 and Q9 are equidistant from the projection point, and, except for screen partition Q6, have the smallest distance between them and the projection point. Therefore, the second parameter coefficients of screen partitions Q3 and Q9 can be 90%, and so on, to obtain the second parameter coefficients of other screen partitions.

[0130] Step S203: Determine the image quality parameters of different screen partitions based on the first parameter coefficient and the second parameter coefficient corresponding to different screen partitions.

[0131] In this embodiment of the application, after determining the first parameter coefficient of all screen partitions and the second parameter coefficient corresponding to different screen partitions, the first parameter coefficient and the second parameter coefficient corresponding to different screen partitions can be directly multiplied to obtain the final image quality parameter adjustment ratio coefficient of different screen partitions.

[0132] For example, Figure 13 In the screen partitions shown, all screen partitions have the same first parameter coefficient: x1, y1, and z1 for the noise reduction parameter, super-resolution parameter, and brightness parameter, respectively. The second parameter coefficient for screen partition Q6 is 100%, while the second parameter coefficients for screen partitions Q3 and Q9 are 90%, and so on. Therefore, the final image quality parameter adjustment ratios for screen partition Q6 are x1, y1, and z1, and the final image quality parameter adjustment ratios for screen partitions Q3 and Q9 are 90%*x1, 90%*y1, and 90%*z1. The final image quality parameter adjustment ratios for other screen partitions can be obtained using the same method.

[0133] The noise reduction parameters, super-resolution parameters, and brightness parameters all have an initial parameter, and the vertical distance between the user and the screen is the initial distance L. cAt this time, the noise reduction parameters, super-resolution parameters, and brightness parameters are all the initial parameters set by this default setting. The initial parameters for noise reduction, super-resolution, and brightness can be denoted as A, B, and C, respectively. Correspondingly, if the user's vertical distance from the screen is L... c When the first parameter coefficient is 1, that is, if the user's vertical distance from the screen is L... c At this time, there is no need to adjust the screen image quality. After determining the final image quality parameter adjustment ratio coefficient for each screen partition based on the above embodiment, the final image quality parameter adjustment ratio for each screen partition is multiplied by the initial parameters A, B, and C respectively to obtain the final value of each image quality parameter for each screen partition.

[0134] For example, if the final image quality parameter adjustment ratios for screen partition Q6 are x1, y1, and z1, then the final noise reduction parameters, super-resolution parameters, and brightness parameters for screen partition Q6 are A*x1, B*y1, and C*z1, respectively. If the final image quality parameter adjustment ratios for screen partitions Q3 and Q9 are 90%*x1, 90%*y1, and 90%*z1, then the final noise reduction parameters, super-resolution parameters, and brightness parameters for screen partitions Q3 and Q9 are A*90%*x1, B*90%*y1, and C*90%*z1, respectively. Other screen partitions can also obtain their final noise reduction parameters, super-resolution parameters, and brightness parameters using the same method, based on their respective final image quality parameter adjustment ratios and initial parameters.

[0135] Step S400: Adjust the image quality of the corresponding screen partition according to the determined different image quality parameters.

[0136] After determining the image quality parameters for all screen partitions, the image quality of the corresponding screen partitions is adjusted according to these parameters. This allows for the determination of image quality parameters for different screen partitions based on their actual distance from the user, and ultimately, the adjustment of the image quality of each screen partition according to these parameters to present a diverse range of image quality effects to the user.

[0137] Figures 11 to 13 After the abstract point shown is projected onto the plane of the screen, the projected point falls on the screen, meaning it falls within the screen's area. Therefore, the screen partition where the projected point is located can be defined as the first region. The distance information between the projected points of different screen partitions is the planar distance between the different screen partitions and the first region. When the controller 250 executes the process of determining the distance information between different screen partitions and the projected point based on the non-perpendicular distance, and determining the second parameter coefficient of different screen partitions based on the distance information, it is configured as follows:

[0138] Different screen partitions are determined based on the non-vertical distance, and their planar distances from the first region are also determined.

[0139] The second parameter coefficients for different screen partitions are determined based on the planar distance, wherein the second parameter coefficient of the first region is the largest among all the second parameter coefficients, and the second parameter coefficients for different screen partitions decrease as the planar distance increases.

[0140] For example, such as Figure 13 As shown, the projection point falls on screen partition Q6, therefore screen partition Q6 can be defined as the first region. Then, the second parameter coefficients of the other screen partitions decrease as the planar distance between the screen partitions and the first region increases. Here, the planar distance can be the straight-line distance between the center point of each screen partition and the center point of the first region.

[0141] like Figure 17 As shown, the projection point falls at the intersection of two screen partitions, Q5 and Q6. The area formed by stitching together screen partitions Q5 and Q6 can be defined as the first region, and the center point of the first region is the midpoint of the intersection line between screen partitions Q5 and Q6. The planar distance between different screen partitions and the first region is the straight-line distance between the center point of each screen partition and the midpoint of the intersection line.

[0142] In some embodiments, after determining the first region, other screen partitions can be further divided into different regions according to the planar distance range level, wherein screen partitions belonging to the same planar distance range level are divided into the same region. Then, the second parameter coefficient of each screen partition is determined based on the different regions. Screen partitions divided into the same region have the same second parameter coefficient.

[0143] For example, such as Figure 13 As shown, the projection point falls on screen partition Q6, which is designated as the first region. Based on the square meter distances between other screen partitions and screen partition Q6, and the planar distance range levels, screen partitions Q2, Q3, Q5, Q8, and Q9 are in the second planar distance range level. That is, screen partitions Q2, Q3, Q5, Q8, and Q9 are closer to the first region than other screen partitions. Therefore, screen partitions Q2, Q3, Q5, Q8, and Q9 are further divided into the same region, forming the second region. Screen partitions Q1, Q4, and Q7 are farther from the first region than other screen partitions. Therefore, screen partitions Q1, Q4, and Q7 are divided into the same region, forming the third region.

[0144] In this embodiment of the application, corresponding second parameter coefficient levels can also be set for different regions. For example... Figure 18 As shown, the highest level of the second parameter coefficient in the first region is d1, which can take the value 1; the second parameter coefficient level in the second region is d2, which can take the value 2 / 3; the second parameter coefficient level in the third region is d3, which can take the value 1 / 3; and the second parameter coefficient level in the fourth region is d4, which takes the value 0. The second parameter coefficients at each level do not necessarily have an arithmetic sequence relationship. In this embodiment, these second parameter coefficient levels can be pre-stored in the system. When determining the second parameter coefficients for different screen partitions, the corresponding chart for that level can be directly retrieved from the system. The coefficient level is determined based on the region where the screen partition is located, and then different second parameter coefficients are determined based on the level.

[0145] Accordingly, the adjusted screen quality in the above example is as follows: Figure 19 As shown, screen partition Q6 is located in the first region with the highest setting, and its second parameter coefficient is 1. Therefore, the image quality adjustment intensity of screen partition Q6 is the greatest. Screen partitions Q2, Q3, Q5, Q8, and Q9 are located in the second region, and their second parameter coefficient is 2 / 3. Therefore, the image quality adjustment intensity of screen partitions Q2, Q3, Q5, Q8, and Q9 is lower than that of screen partition Q6. Screen partitions Q1, Q4, and Q7 are located in the third region, and their second parameter coefficient is 1 / 3. Therefore, the image quality adjustment intensity of screen partitions Q1, Q4, and Q7 is lower than that of screen partition Q6. The final image quality adjustment intensity of screen partitions Q1, Q4, and Q7 can be presented to the user as follows: Figure 19 The image quality adjustment shown is not a uniform adjustment of the image quality across the entire screen.

[0146] Figure 20 and Figure 21 After the abstract point shown is projected onto the plane of the screen, the projected point falls outside the screen, that is, outside the screen area. Therefore, the virtual screen partition where the projected point is located (here, the virtual screen partition is not the actual screen partition, but a screen partition virtually set to determine the screen area) can be determined as the first region. The screen partition closest to the first region is determined as the second region, and the distance information is the planar distance between different screen partitions and the second region. When the controller 250 executes the determination of the distance information between different screen partitions and the projection point based on the non-perpendicular distance, and determines the second parameter coefficient of different screen partitions based on the distance information, it can also be configured as follows:

[0147] Different screen partitions are determined based on the non-vertical distance, and their planar distances to the second region are also determined.

[0148] The second parameter coefficients for different screen partitions are determined based on the planar distance, wherein the second parameter coefficient for the second region is the largest among all second parameter coefficients. The second parameter coefficients for different screen partitions decrease as the planar distance increases, and the second parameter coefficient for the second region is smaller than that for the first region. In other words, when the projection point falls outside the screen, the overall screen adjustment ratio is smaller than that when the projection point falls on the screen.

[0149] like Figure 21 As shown, the projection point falls on virtual screen partition Q10, therefore virtual screen partition Q10 can be defined as the first region, where screen partitions Q10, Q11, and Q12 are all virtual screen partitions. Then, the second parameter coefficients of each screen partition are determined based on the planar distances between the other screen partitions and the first region. Screen partition Q3 is closest to virtual screen partition Q10, therefore screen partition Q3 can be defined as the second region; similarly, screen partitions Q2, Q5, and Q6 are all within the same distance range from the second region, therefore screen partitions Q2, Q5, and Q6 can be defined as the third region; screen partitions Q1, Q4, Q7, Q8, and Q9 are all within the same distance range from the third region, therefore screen partitions Q1, Q4, Q7, Q8, and Q9 can be defined as the fourth region.

[0150] Accordingly, the adjusted screen quality in the above example is as follows: Figure 22 As shown, screen partition Q3 is located in the second region, with a setting of d2 and a determined second parameter coefficient of 1 / 3. Therefore, the image quality adjustment intensity of screen partition Q6 is the greatest. Screen partitions Q2, Q5, and Q6 are located in the third region, with a setting of d3 and a determined second parameter coefficient of 1 / 3. Therefore, the image quality adjustment intensity of screen partitions Q2, Q5, and Q6 is lower than that of screen partition Q3. Screen partitions Q1, Q4, Q7, Q8, and Q9 are located in the fourth region, with a setting of d4 and a determined second parameter coefficient of 0. Therefore, screen partitions Q1, Q4, Q7, Q8, and Q9 do not require image quality adjustment. Ultimately, the image quality can be presented to the user as follows: Figure 22 The image quality adjustment shown is not a uniform adjustment of the image quality across the entire screen.

[0151] As can be seen from the above embodiments, the screen image quality adjustment method of this application can be applied not only to scenarios where the user's abstract point is projected within the screen range, but also to scenarios where the user's abstract point is projected outside the screen range, thereby adapting to various possible user positions and further presenting diverse image quality adjustment effects.

[0152] In some embodiments, after adjusting the image quality of the corresponding screen partition according to different image quality parameters, if the radar component detects a change in the distance between the abstract point and the screen again, it can redetermine the image quality parameters based on the changed distance, and readjust the image quality of each screen partition according to the redetermined image quality parameters. The change in the distance between the abstract point and the screen can be categorized into the following three cases:

[0153] In the first scenario, if the vertical distance changes but the non-vertical distance remains unchanged, the first parameter coefficient of the screen partition can be redefined based on the changed vertical distance. At the same time, the second parameter coefficients of all screen partitions are not changed. Based on the redefined first parameter data and the original second parameter coefficients, the image quality parameters of different screen partitions are redefined, and the image quality of the corresponding screen partitions is adjusted according to the redefined different image quality parameters.

[0154] For example, such as Figure 16 As shown, when the distance between the abstract point and the screen is 2 meters, the position for configuring the initial image quality parameters for the display device is defined as follows: when the vertical distance between the abstract point and the screen is 2 meters, the first parameter coefficient is 1. When the vertical distance between the abstract point and the screen is 2 meters, the image quality of the corresponding screen partition is adjusted based on this first parameter coefficient and the second parameter coefficient determined according to the above embodiment. Then, the radar component detects a change in the vertical distance between the abstract point and the screen, for example, moving from a vertical distance of 2 meters to a vertical distance of 1 meter. Based on the noise reduction fitting curve, the super-resolution fitting curve, and the brightness fitting curve, the first parameter coefficient is redefined as 1.6, 0.7, and 0.6, respectively. Then, based on the redefined first parameter coefficients of 1.6, 0.7, and 0.6, and the original second parameter coefficients, the noise reduction parameters, super-resolution parameters, and brightness parameters are redefined, respectively.

[0155] The second scenario is that the non-vertical distance changes while the vertical distance remains unchanged. In this case, the second parameter coefficients of each screen partition can be re-determined based on the changed non-vertical distance, while the first parameter coefficients of all screen partitions remain unchanged. Based on the re-determined second parameter coefficients and the original first parameter coefficients, the image quality parameters of different screen partitions are re-determined, and the image quality of the corresponding screen partitions is adjusted according to the re-determined different image quality parameters.

[0156] For example, in Figure 11 and Figure 12 In the diagram, the vertical angle between the line connecting the abstract point to the millimeter-wave radar and the centerline of the millimeter-wave radar is updated from α to α′. Then, according to trigonometric relationships, the height of the abstract point relative to the millimeter-wave radar is updated from H0 = R² * sinα to H0 = R² * sinα′. Based on the updated height value, in... Figure 13 In the process, the projection point of the abstract point moves from screen partition Q6 to screen partition Q9. Correspondingly, the first region is updated from screen partition Q6 to screen partition Q9. Therefore, the second parameter coefficient of screen partition Q9 is maximized and determined as the maximum level d1. Screen partition Q6 changes from being located in the first region to being located in the second region, so the second parameter coefficient of screen partition Q6 is determined as level d2. Then, the second parameter coefficient levels of other screen partitions are re-determined according to the method in the above embodiment. Finally, the image quality parameters of different screen partitions are re-determined based on the re-determined second parameter coefficients and the original first parameter coefficients. Ultimately, the image quality can be presented to the user as follows: Figure 23 The image quality adjustment effect shown.

[0157] The third scenario is when both the non-vertical distance and the vertical distance change simultaneously. In this case, the first parameter coefficient of all screen partitions can be re-determined based on the changed vertical distance, and the second parameter coefficient of each screen partition can be re-determined based on the changed non-vertical distance. Based on the re-determined first parameter coefficient and the re-determined second parameter coefficient of each screen partition, the image quality parameters of different screen partitions can be re-determined, and the image quality of the corresponding screen partitions can be adjusted according to the re-determined different image quality parameters.

[0158] For example, in Figure 11 and Figure 12 In the diagram, the horizontal angle between the line connecting the abstract point to the millimeter-wave radar and the centerline of the millimeter-wave radar is updated from θ to θ′. Then, according to trigonometric relationships, the projected distance of the abstract point relative to the millimeter-wave radar is updated from L0 = R1 * cosθ to L0 = R1 * cosθ′, and the horizontal distance of the abstract point relative to the millimeter-wave radar is updated from S0 = R1 * sinθ to S0 = R1 * sinθ′. Correspondingly, the vertical distance between the abstract point and the screen is also updated to L0 = R1 * cosθ′. Therefore, the first parameter coefficient can be re-determined based on the updated vertical distance. The update of the horizontal distance of the abstract point relative to the millimeter-wave radar causes the projected point to move horizontally on the screen.

[0159] For example in Figure 13In the process, the projection point of the abstract point moves from screen partition Q6 to screen partition Q5, and the first region is updated from screen partition Q6 to screen partition Q5. Therefore, the second parameter coefficient of screen partition Q5 is the maximum, and it is determined to be the maximum level d1. Screen partition Q6 changes from being located in the first region to being located in the second region, so the second parameter coefficient of screen partition Q6 is determined to be level d2. Then, the second parameter coefficient levels of other screen partitions are re-determined according to the method in the above embodiment. Finally, the image quality parameters of different screen partitions are re-determined based on the re-determined first parameter coefficient and the re-determined second parameter coefficient. Ultimately, the image quality can be presented to the user as follows: Figure 24 The image quality adjustment effect shown.

[0160] Based on the above three scenarios of image quality adjustment schemes, it can be seen that in the image quality adjustment method of this application, no matter how the user moves, the first parameter coefficient and the second parameter coefficient can be determined according to the user's new position, and then the image quality parameters of different screen partitions can be determined according to the user's latest position, thereby adjusting the image quality of different screen partitions.

[0161] Users may move frequently while viewing the screen. If the image quality is changed every time a change in the user's position is detected, continuous parameter adjustments are required, which negatively impacts the user's viewing experience. In some embodiments, a change threshold can be preset. Parameters are only re-determined when the detected change in the user's position exceeds this threshold, avoiding continuous image quality updates. Both vertical distance change thresholds and non-vertical distance change thresholds can be set simultaneously. Then, based on these thresholds, it can be determined whether the first and second parameter coefficients need to be re-determined, respectively.

[0162] For example, both the vertical distance change threshold and the non-vertical distance change threshold are set to 0.5 meters. If the change in the vertical distance from the abstract point to the screen exceeds 0.5 meters, it is determined that the vertical distance has changed, and the first parameter coefficient is then re-determined based on the re-detected vertical distance. Conversely, if the change in the vertical distance from the abstract point to the screen does not exceed 0.5 meters, it is determined that the vertical distance has not changed, and the first parameter coefficient does not need to be re-determined. If the change in the non-vertical distance from the abstract point to the screen exceeds 0.5 meters, it is determined that the non-vertical distance has changed, and the second parameter coefficient is then re-determined based on the re-detected non-vertical distance.

[0163] The brightness parameters of each screen partition are determined based on the ambient light sensing data, a first parameter coefficient, and a second parameter coefficient. The ambient light sensing data is obtained from an ambient light sensor. The ambient light sensor detects the ambient light sensing data and stores it in a memory. When determining the brightness parameters of each screen partition, the controller 250 reads the latest sensing data from the memory. However, if the user is too close to the display device 200, it may interfere with the ambient light sensor. For example, if the ambient light sensor is blocked, and the surrounding environment darkens, the sensing data detected by the ambient light sensor may be less than the actual sensing data.

[0164] In some embodiments, to avoid the aforementioned problems, an ambient light sensor off-distance threshold can be set. If the distance between the user and the display device 200 is less than the off-distance threshold, the ambient light sensor is turned off, and the second light sensing data detected by the ambient light sensor before it is turned off is stored. Then, the brightness parameters of each screen partition are determined based on the second light sensing data, the first parameter coefficient, and the second parameter coefficient. If the distance between the user and the display device 200 is greater than the off-distance threshold, the ambient light sensor is not turned off. The ambient light sensor continues to detect ambient light sensing data and continuously updates the ambient light sensing data stored in the memory, so that the controller 250 obtains the latest ambient light sensing data from the memory, and then determines the brightness parameters of each screen partition based on the latest ambient light sensing data, the first parameter coefficient, and the second parameter coefficient.

[0165] The above embodiments all assume that the display device 200 only considers the viewing needs of one user, meaning that only one user exists within the preset area in front of the display device 200. If multiple users exist within the preset area in front of the display device 200, only the user closest to the display device 200 can be considered; that is, the image quality of the display device 200 screen is adjusted only based on the distance to the user closest to the display device 200. It is understood that if the display device 200 screen is large enough, the method of the embodiments of this application can also be applied to adjust the image quality of the display device 200 screen separately based on the distance between different users and the display device 200.

[0166] For example, such as Figure 25As shown, within the preset area of ​​the display device 200, there are users A and B. User A's abstract point 1 is projected onto the plane of the screen to obtain projection point 1, and user B's abstract point 2 is projected onto the plane of the screen to obtain projection point 2. The first parameter coefficient and the second parameter coefficient of the screen can then be determined based on projection point 1 and projection point 2, respectively. The first parameter coefficient can be determined based on the average distance between the vertical distance of abstract point 1 and the screen and the vertical distance between abstract point 2 and the screen. Then, screen partition Q6, where projection point 1 is located, is determined as the first region, and screen partition Q7, where projection point 2 is located, is also determined as the first region. Then, screen partitions Q2, Q3, Q4, Q5, Q8, and Q9, which are closest to the two first regions in non-perpendicular distance, are determined as the second region, and screen partition Q1, which is closest to the second region in non-perpendicular distance, is determined as the third region. Finally, the display can be presented to the user as shown in the image. Figure 25 The image quality adjustment effect shown is sufficient to simultaneously meet the screen quality adjustment needs of both user A and user B.

[0167] like Figure 26 The flowchart shown below illustrates the specific implementation process of the display device image quality adjustment method provided in this application embodiment:

[0168] S3010: Run the location detection component, and then the location detection component detects the user's location.

[0169] S3011: The position detection component first calculates the vertical distance between the user and the screen, and determines whether the user is within a preset area based on the vertical distance. If the user is not within the preset area, no operation is performed, and position detection continues.

[0170] S3012: If the user is within the preset area, the screen's image quality is initially set according to the user's position relative to the screen. The initially set parameters, namely the currently used NR and SR parameters, as well as the current brightness parameters obtained from the ambient light sensor, are stored in the memory.

[0171] S3013: Determine whether the vertical distance between the user and the screen is less than the ambient light sensor's off distance threshold.

[0172] S3014: If the vertical distance is less than the off distance threshold, write the current ambient light sensing data into the memory and turn off the ambient light sensor.

[0173] S3015: If the vertical distance is greater than the closing distance threshold, the ambient light sensor will continuously detect ambient light data.

[0174] S3016: The location detection component continues to detect the user's location;

[0175] S3017: If, based on the aforementioned initial position, it is determined that the relative distance the user has moved is greater than the distance change threshold, the adjustment coefficients for the NR parameter, SR parameter, and brightness parameter are calculated according to the first parameter coefficient and the second parameter coefficient, respectively, based on the vertical and non-vertical distances between the user and the screen after movement. Then, based on the calculated adjustment coefficients for the NR parameter, SR parameter, and brightness parameter, the currently used NR parameter and SR parameter, and the current brightness parameter obtained from the ambient light sensor, the adjusted NR parameter, SR parameter, and brightness parameter are calculated. The currently used NR parameter and SR parameter are parameters obtained from memory, and the brightness parameter is obtained from memory (if the vertical distance is less than the closing distance threshold) or from the ambient light sensor (if the vertical distance is greater than or equal to the closing distance threshold).

[0176] S3018: Controller 250 sends the adjusted NR and SR parameters to the TCON module.

[0177] S3019: The TCON module adjusts the screen's noise reduction and super-resolution effects based on the adjusted NR and SR parameters. Simultaneously, the controller 250 sends the adjusted brightness parameters to the backlight driver module, which then adjusts the backlight brightness accordingly, thereby regulating the screen brightness.

[0178] It should be noted that after adjusting the screen quality using the steps described above, the radar component continues to detect the user's position. If the user is detected to be outside the preset area, even if the distance the user has moved exceeds a distance change threshold, no image quality adjustment is required. If the distance the user has moved exceeds the distance change threshold, but the user remains within the preset area after moving, the image quality can be adjusted according to the method described in the above embodiment.

[0179] The same or similar parts among the various embodiments in this specification can be referred to mutually, and will not be repeated here.

[0180] Those skilled in the art will clearly understand that the techniques in the embodiments of the present invention can be implemented using software plus necessary general-purpose hardware platforms. Based on this understanding, the technical solutions in the embodiments of the present invention, or the parts that contribute to the prior art, can be embodied in the form of software products. These computer software products can be stored in storage media, such as ROM / RAM, magnetic disks, optical disks, etc., and include several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods of various embodiments or certain parts of the embodiments of the present invention.

[0181] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0182] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. A display device, characterized in that, include: The monitor is configured to display images; A location detection component is configured to detect the location state of an abstract point of the user and generate a status signal based on the location state. The controller is configured as follows: Determine the screen partitions, wherein the screen is divided into at least two screen partitions; The status signal is obtained from the position detection component, and the positional relationship between different screen partitions and the abstract point is determined based on the status signal; the positional relationship includes vertical distance and non-vertical distance, and the vertical distance represents the projection distance of the abstract point onto the plane where the screen is located; The first parameter coefficient of all screen partitions is determined based on the vertical distance, and the first parameter coefficient of all screen partitions is the same; Based on the non-perpendicular distance, the distance information between different screen partitions and the projection point is determined, and the second parameter coefficient of different screen partitions is determined based on the distance information, wherein the projection point is the point obtained by projecting the abstract point onto the plane where the screen is located; Based on the first parameter coefficient and the second parameter coefficient corresponding to different screen partitions, the image quality parameters of different screen partitions are determined respectively; Adjust the image quality of the corresponding screen partition according to the determined image quality parameters.

2. The display device according to claim 1, characterized in that, If the projection point falls on the screen, the screen partition where the projection point is located is determined as a first region. The distance information is the planar distance between different screen partitions and the first region. The controller determines the distance information between different screen partitions and the projection point based on the non-perpendicular distance, and determines the second parameter coefficient of different screen partitions based on the distance information, configured as follows: Different screen partitions are determined based on the non-vertical distance, and their planar distances from the first region are also determined. The second parameter coefficients for different screen partitions are determined based on the planar distance, wherein the second parameter coefficient of the first region is the largest among all the second parameter coefficients, and the second parameter coefficients for different screen partitions decrease as the planar distance increases.

3. The display device according to claim 2, characterized in that, If the projection point falls outside the screen, the screen partition closest to the projection point is determined as the second region. The distance information is the planar distance between different screen partitions and the second region. The controller determines the distance information between different screen partitions and the projection point based on the non-vertical distance, and determines the second parameter coefficient of different screen partitions based on the distance information, configured as follows: Different screen partitions are determined based on the non-vertical distance, and their planar distances to the second region are also determined. The second parameter coefficients for different screen partitions are determined based on the planar distance, wherein the second parameter coefficient of the second region is the largest among all the second parameter coefficients, the second parameter coefficients of different screen partitions decrease as the planar distance increases, and the second parameter coefficient of the second region is smaller than the second parameter coefficient of the first region.

4. The display device according to claim 2, characterized in that, The controller determines the planar distance between different screen partitions and the first region based on the non-vertical distance, and determines the second parameter coefficient of different screen partitions based on the planar distance, configured as follows: Based on the planar distance between the screen partition and the first region, the screen partition is further divided into different regions according to the planar distance range level, wherein the screen partitions belonging to the same planar distance range level are divided into the same region; The second parameter coefficients for different screen partitions are determined based on the region, wherein the second parameter coefficients for screen partitions that are divided into the same region are determined to be the same.

5. The display device according to claim 1, characterized in that, After adjusting the image quality of the corresponding screen partition according to the different image quality parameters, the controller is further configured to: If a change in the vertical distance is detected, and no change in the non-vertical distance is detected, the first parameter coefficient of the screen partition is re-determined based on the changed vertical distance, while the second parameter coefficient of all screen partitions is not changed. Based on the re-determined first parameter coefficient and the second parameter coefficient corresponding to different screen partitions, the image quality parameters of different screen partitions are re-determined respectively, and the image quality of the corresponding screen partition is adjusted based on the re-determined different image quality parameters.

6. The display device according to claim 1, characterized in that, After adjusting the image quality of the corresponding screen partition according to the different image quality parameters, the controller is further configured to: If a change in the non-vertical distance is detected, and no change in the vertical distance is detected, the second parameter coefficients of all screen partitions are re-determined based on the changed non-vertical distance, while the first parameter coefficients are not changed. Based on the original first parameter coefficients and the re-determined second parameter coefficients corresponding to different screen partitions, the image quality parameters of different screen partitions are re-determined respectively, and the image quality of the corresponding screen partitions is adjusted based on the re-determined different image quality parameters.

7. The display device according to claim 1, characterized in that, After adjusting the image quality of the corresponding screen partition according to the different image quality parameters, the controller is further configured to: If a change is detected in both the vertical distance and the non-vertical distance, the first parameter coefficient is re-determined based on the changed vertical distance. Simultaneously, the second parameter coefficients for all screen partitions are re-determined based on the changed non-vertical distance. Furthermore, based on the re-determined first parameter coefficients and the re-determined second parameter coefficients corresponding to different screen partitions, the image quality parameters for different screen partitions are re-determined. Finally, the image quality of the corresponding screen partition is adjusted based on the re-determined different image quality parameters.

8. The display device according to claim 1, characterized in that, The image quality parameters include brightness parameters, and the controller is further configured to: If the vertical distance is greater than a preset distance threshold, the first light sensing data collected by the ambient light sensor is obtained, and the brightness parameters of different screen partitions are determined according to the first parameter coefficient, the second parameter coefficient corresponding to different screen partitions and the first light sensing data, and the brightness of the corresponding screen partition is adjusted according to the different brightness parameters. If the vertical distance is less than the preset distance threshold, the second light sensing data collected before the ambient light sensor is turned off is obtained, and the brightness parameters of different screen partitions are determined according to the first parameter coefficient, the second parameter coefficient corresponding to different screen partitions and the second light sensing data, and the brightness of the corresponding screen partitions is adjusted according to the different brightness parameters.

9. A method for adjusting the image quality of a display device, characterized in that, The image quality adjustment method for a display device includes: Determine the screen partitions, wherein the screen is divided into at least two screen partitions; A status signal is obtained from the position detection component, and the positional relationship between different screen partitions and abstract points is determined based on the status signal. The status signal is a signal generated based on the position status, which is the status information obtained by the position detection component from detecting the user's abstract points. The positional relationship includes vertical distance and non-vertical distance, where the vertical distance represents the projection distance of the abstract point onto the plane where the screen is located. A first parameter coefficient for all screen partitions is determined based on the vertical distance, and the first parameter coefficients for all screen partitions are the same. Based on the non-perpendicular distance, the distance information between different screen partitions and the projection point is determined, and the second parameter coefficient of different screen partitions is determined based on the distance information, wherein the projection point is the point obtained by projecting the abstract point onto the plane where the screen is located; Based on the first parameter coefficient and the second parameter coefficient corresponding to different screen partitions, the image quality parameters of different screen partitions are determined respectively; the image quality of the corresponding screen partitions is adjusted according to the determined different image quality parameters.

Images