CN115953965A

CN115953965A - Display device and display parameter adjustment method

Info

Publication number: CN115953965A
Application number: CN202111170228.1A
Authority: CN
Inventors: 何营昊; 王英俊; 于新磊
Original assignee: Hisense Visual Technology Co Ltd
Current assignee: Hisense Visual Technology Co Ltd
Priority date: 2021-10-08
Filing date: 2021-10-08
Publication date: 2023-04-11

Abstract

The application provides a display device and a display parameter adjusting method. The display device includes a display, a light sensor, and a controller. Wherein the display is configured to display a target image, the light sensor is configured to acquire an ambient color temperature of an environment in which the display device is located, and the controller is configured to: and acquiring the color temperature of the target environment collected by the optical sensor, and acquiring target display parameters corresponding to the color temperature of the target environment according to the preset display parameter corresponding relation. And then the display parameters of the target image are adjusted to the target display parameters, so that the display equipment can automatically adjust the display parameters, and meanwhile, the display parameters can be ensured to be adaptive to the surrounding environment, the display effect of the display equipment is improved, and the user experience is stronger.

Description

Display device and display parameter adjustment method

Technical Field

The present application relates to the field of display device technologies, and in particular, to a display device and a display parameter adjustment method.

Background

The display device refers to a terminal device capable of outputting a specific display picture, such as a smart television, a mobile terminal, a smart advertisement screen, a projector, and the like. Along with the rapid development of display equipment, the function of the display equipment is more and more abundant, the performance is more and more powerful, the bidirectional man-machine interaction function can be realized, and various functions such as audio and video, entertainment, data and the like are integrated, so that the diversified and personalized requirements of users are met.

The display device may also apply many intelligent control techniques, for example the display device has an automatic backlight adjustment function. When the display device starts the automatic backlight adjusting function, the brightness change of the external environment can be sensed, and the current backlight brightness is automatically adjusted to the target backlight brightness corresponding to the environment brightness, so that the brightness of the external environment is adapted, and the viewing experience of a user under different ambient lights is improved.

However, when the automatic backlight adjustment function is turned on, the display device can only adjust the backlight brightness of the display device according to the ambient brightness, and other display parameters of the display device, such as color temperature, cannot be adjusted, so that the overall display effect of the display device is poor, and the experience of the user is poor.

Disclosure of Invention

The invention provides a display device and a display parameter adjusting method. The problem that in the related art, the overall display effect of the display equipment is poor and the experience of a user is poor is solved.

In a first aspect, the present application provides a display device comprising a display, a light sensor, and a controller. Wherein the display is configured to display the target image; the light sensor is configured to acquire an ambient color temperature of an environment where the display device is located; the controller is configured to perform the steps of:

acquiring a target environment color temperature collected by a light sensor; acquiring target display parameters corresponding to the target environmental color temperatures according to preset display parameter corresponding relations, wherein the display parameter corresponding relations represent display parameters corresponding to different environmental color temperatures; and adjusting the display parameters of the target image to the target display parameters.

In some implementations, the controller is further configured to: in the step of obtaining the target display parameters corresponding to the target environmental color temperature according to the preset display parameter corresponding relation,

converting the target ambient color temperature to a display color temperature; determining a target color temperature interval where the display color temperature is located; and acquiring display parameters corresponding to the target color temperature interval according to the display parameter corresponding relation, and taking the display parameters as target display parameters.

In some implementations, the controller is further configured to: after performing the step of converting the target ambient color temperature into a display color temperature,

judging whether the display color temperature is in a preset color temperature threshold value; if yes, executing a step of determining a target color temperature interval corresponding to the display color temperature; if not, no processing is performed.

In some implementations, the controller is further configured to:

when an instruction which indicates to display an image function interface and is input by a user is responded, controlling a display to display the image function interface, wherein the image function interface comprises a plurality of image function options including an environment color temperature adjusting function; and when a selection instruction which is input in the image function interface by a user and is used for selecting the environmental color temperature adjusting function is detected, a step of determining a target display parameter corresponding to the target environmental color temperature is executed.

In some implementations, the controller is further configured to: after the step of obtaining the target ambient color temperature collected by the light sensor is performed,

responding to an instruction which is input by a user and indicates to start an environment brightness adjusting function, and converting the target environment color temperature into environment brightness; determining a target brightness interval where the environment brightness is located; when the display is a first type display, acquiring a target PLC curve corresponding to the target brightness interval and adjusting the backlight brightness of the display equipment according to the target PLC curve; when the display is a second-type display, acquiring target brightness corresponding to the target brightness interval and adjusting backlight brightness of the display equipment to the target brightness; and acquiring a target gamma curve corresponding to the target brightness interval and adjusting the brightness of each pixel point in the target image according to the target gamma curve.

In some implementations, the controller is further configured to: in the step of acquiring the PLC curve corresponding to the target brightness interval;

acquiring an initial PLC curve of display equipment; acquiring a PLC curve offset corresponding to the target brightness interval according to a preset PLC curve offset relation; and adjusting the initial PLC curve according to the PLC curve offset to obtain a target PLC curve.

In some implementations, the controller is further configured to: in the step of acquiring the target gamma curve corresponding to the target brightness interval;

acquiring an initial gamma curve of the display equipment; acquiring a gamma curve offset corresponding to the target brightness interval according to a preset gamma curve offset relation; and adjusting the initial gamma curve according to the gamma curve offset to obtain a target gamma curve.

In some implementations, the controller is further configured to: after the step of determining the target color temperature interval in which the display color temperature is located is performed,

judging whether the target brightness interval is a preset brightness interval or not; if the target brightness interval is a preset brightness interval, taking the display parameter corresponding to the first color temperature interval as a target display parameter, and executing the step of adjusting the display parameter of the target image to the target display parameter; and if the target brightness interval is not the preset brightness interval, executing the step of acquiring the display parameters corresponding to the target color temperature interval according to the display parameter corresponding relation.

In some implementations, the controller is further configured to: after performing the step of determining the target color temperature interval in which the display color temperature is located,

judging whether the target brightness interval is a preset brightness interval or not; if the target brightness interval is a preset brightness interval, when the display is a first type of display, acquiring a first PLC curve corresponding to the first brightness interval and adjusting the backlight brightness of the display equipment according to the first PLC curve, and when the display is a second type of display, acquiring first brightness corresponding to the first brightness interval and adjusting the backlight brightness of the display equipment to the first brightness; and acquiring a first gamma curve corresponding to a first brightness interval and adjusting the brightness of each pixel point in the target image according to the first gamma curve.

In a second aspect, the present application provides a display parameter adjusting method, applied to a display device, including:

According to the technical scheme, the display equipment and the display parameter adjusting method can acquire the color temperature of the target environment collected by the optical sensor and acquire the target display parameters corresponding to the color temperature of the target environment according to the preset display parameter corresponding relation. And then the display parameters of the target image are adjusted to the target display parameters, so that the display equipment can automatically adjust the display parameters, and meanwhile, the display parameters can be ensured to be adaptive to the surrounding environment, the display effect of the display equipment is improved, and the user experience is stronger.

Drawings

In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without any creative effort.

FIG. 1 illustrates a usage scenario of a display device according to some embodiments;

fig. 2 illustrates a hardware configuration block diagram of the control apparatus 100 according to some embodiments;

fig. 3 illustrates a hardware configuration block diagram of the display apparatus 200 according to some embodiments;

FIG. 4 illustrates a software configuration diagram in the display device 200 according to some embodiments;

FIG. 5 shows a schematic diagram of a user interface in some embodiments;

FIG. 6 is a schematic diagram of a display device displaying confirmation information of an ambient color temperature adjustment mode in some embodiments;

FIG. 7 illustrates an interaction flow diagram for components of a display device in some embodiments;

FIG. 8 is a schematic diagram that illustrates a color temperature anomaly cue interface in some embodiments;

FIG. 9 is a schematic diagram illustrating the adjustment of white balance values by the display device in some embodiments;

FIG. 10 illustrates a schematic diagram of a graphical function interface in some embodiments;

FIG. 11 is a schematic diagram that illustrates the automatic brightness adjustment of a display device in some embodiments;

FIG. 12 is a schematic diagram that illustrates an ambient brightness exception prompt interface in some embodiments;

FIG. 13 shows a flow chart of the display device adjusting the brightness of different types of displays;

FIG. 14 illustrates a flow diagram for adjusting backlight brightness of a display device in some embodiments;

FIG. 15 illustrates a flow diagram for adjusting the brightness of a target image in some embodiments;

FIG. 16 shows a flow diagram for adjusting backlight brightness of a display device in some embodiments;

FIG. 17 is a schematic diagram illustrating brightness adjustment of a display device in some embodiments;

FIG. 18 shows a flow diagram for adjusting the brightness of a display device in some embodiments;

FIG. 19 shows a flow diagram of one embodiment of a display parameter adjustment method.

Detailed Description

To make the purpose and embodiments of the present application clearer, the following will clearly and completely describe the exemplary embodiments of the present application with reference to the attached drawings in the exemplary embodiments of the present application, and it is obvious that the described exemplary embodiments are only a part of the embodiments of the present application, and not all the embodiments.

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

The terms "first," "second," "third," and the like in the description and claims of this application and in the above-described drawings are used for distinguishing between similar or analogous objects or entities and not necessarily for describing a particular sequential or chronological order, unless otherwise indicated. It is to be understood that the terms so used are interchangeable under appropriate circumstances. The terms "comprises" and "comprising," as well as any variations thereof, are intended to cover a non-exclusive inclusion, such that a product or device that comprises a list of elements is not necessarily limited to all of the elements explicitly listed, but may include other elements not expressly listed or inherent to such product or device. The term "module" refers to any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic, or combination of hardware and/or software code that is capable of performing the functionality associated with that element.

Fig. 1 is a schematic diagram of a usage scenario of a display device according to an embodiment. As shown in fig. 1, the display apparatus 200 is also in data communication with a server 400, and a user can operate the display apparatus 200 through the smart device 300 or the control device 100.

In some embodiments, the control apparatus 100 may be a remote controller, and the communication between the remote controller and the display device includes at least one of an infrared protocol communication or a bluetooth protocol communication, and other short-distance communication methods, and controls the display device 200 in a wireless or wired manner. The user may control the display apparatus 200 by inputting a user instruction through at least one of a key on a remote controller, a voice input, a control panel input, and the like.

In some embodiments, the smart device 300 may include any of a mobile terminal, a tablet, a computer, a laptop, an AR/VR device, and the like.

In some embodiments, the smart device 300 may also be used to control the display device 200. For example, the display device 200 is controlled using a camera application running on the smart device.

In some embodiments, the smart device 300 and the display device may also be used for communication of data.

In some embodiments, the display device 200 may also be controlled in a manner other than the control apparatus 100 and the smart device 300, for example, the voice command control of the user may be directly received through a module configured inside the display device 200 to obtain the voice command, or may be received through a voice control apparatus provided outside the display device 200.

In some embodiments, the display device 200 is also in data communication with a server 400. The display device 200 may be allowed to be communicatively connected through a Local Area Network (LAN), a Wireless Local Area Network (WLAN), and other networks. The server 400 may provide various contents and interactions to the display apparatus 200. The server 400 may be a cluster or a plurality of clusters, and may include one or more types of servers.

In some embodiments, software steps executed by one step execution agent may migrate to another step execution agent in data communication therewith for execution as needed. Illustratively, software steps performed by the server may be migrated to be performed on a display device in data communication therewith, and vice versa, as desired.

Fig. 2 exemplarily shows a block diagram of a configuration of the control apparatus 100 according to an exemplary embodiment. As shown in fig. 2, the control device 100 includes a controller 110, a communication interface 130, a user input/output interface 140, a memory, and a power supply. The control apparatus 100 may receive an input operation instruction from a user and convert the operation instruction into an instruction recognizable and responsive by the display device 200, serving as an interaction intermediary between the user and the display device 200.

In some embodiments, the communication interface 130 is used for external communication, and includes at least one of a WIFI chip, a bluetooth module, NFC, or an alternative module.

In some embodiments, the user input/output interface 140 includes at least one of a microphone, a touchpad, a sensor, a key, or an alternative module.

Fig. 3 shows a hardware configuration block diagram of the display apparatus 200 according to an exemplary embodiment.

In some embodiments, the display apparatus 200 includes at least one of a tuner demodulator 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, a user interface.

In some embodiments the controller comprises a central processor, a video processor, an audio processor, a graphics processor, a RAM, a ROM, a first interface to an nth interface for input/output.

In some embodiments, the display 260 includes a display screen component for displaying pictures, and a driving component for driving image display, a component for receiving image signals from the controller output, displaying video content, image content, and menu manipulation interface, and a user manipulation UI interface, etc.

In some embodiments, the display 260 may be at least one of a liquid crystal display, an OLED display, and a projection display, and may also be a projection device and a projection screen.

In some embodiments, the tuner demodulator 210 receives broadcast television signals via wired or wireless reception and demodulates audio/video signals, such as EPG data signals, from a plurality of wireless or wired broadcast television signals.

In some embodiments, communicator 220 is a component for communicating with external devices or servers according to various communication protocol types. For example: the communicator may include at least one of a Wifi module, a bluetooth module, a wired ethernet module, and other network communication protocol chips or near field communication protocol chips, and an infrared receiver. The display apparatus 200 may establish transmission and reception of a control signal and a data signal with the control device 100 or the server 400 through the communicator 220.

In some embodiments, the detector 230 is used to collect signals of the external environment or interaction with the outside. For example, detector 230 includes a light receiver, a sensor for collecting the intensity of ambient light; alternatively, the detector 230 includes an image collector, such as a camera, which can be used to collect external environment scenes, attributes of the user, or user interaction gestures, or the detector 230 includes a sound collector, such as a microphone, which is used to receive external sounds.

In some embodiments, the external device interface 240 may include, but is not limited to, the following: high Definition Multimedia Interface (HDMI), analog or data high definition component input interface (component), composite video input interface (CVBS), USB input interface (USB), RGB port, and the like. The interface may be a composite input/output interface formed by the plurality of interfaces.

In some embodiments, the controller 250 and the modem 210 may be located in different separate devices, that is, the modem 210 may also be located in an external device of the main device where the controller 250 is located, such as an external set-top box.

In some embodiments, the controller 250 controls the operation of the display device and responds to user operations through various software control programs stored in memory. The controller 250 controls the overall operation of the display apparatus 200. For example: in response to receiving a user command for selecting a UI object to be displayed on the display 260, the controller 250 may perform an operation related to the object selected by the user command.

In some embodiments, the object may be any one of selectable objects, such as a hyperlink, an icon, or other actionable control. The operations related to the selected object are: displaying an operation connected to a hyperlink page, document, image, or the like, or performing an operation of a program corresponding to the icon.

In some embodiments the controller comprises at least one of a Central Processing Unit (CPU), a video processor, an audio processor, a Graphics Processing Unit (GPU), a rammanaccess Memory, a RAM, a ROM (Read-only Memory), a first to nth interface for input/output, a communication Bus (Bus), and the like.

In some embodiments, a graphics processor for generating various graphics objects, such as: at least one of an icon, an operation menu, and a user input instruction display figure. The graphic processor comprises an arithmetic unit which carries out operation by receiving various interactive instructions input by a user and displays various objects according to display attributes; the system also comprises a renderer for rendering various objects obtained based on the arithmetic unit, wherein the rendered objects are used for being displayed on a display.

In some embodiments, a user may enter user commands on a Graphical User Interface (GUI) displayed on display 260, and the user input interface receives the user input commands through the Graphical User Interface (GUI). Alternatively, the user may input the user command by inputting a specific sound or gesture, and the user input interface receives the user input command by recognizing the sound or gesture through the sensor.

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

In some embodiments, user interface 280 is an interface that may be used to receive control inputs (e.g., physical buttons on the body of the display device, or the like).

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

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

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

When the automatic backlight adjustment function is started, the display device can only adjust the backlight brightness of the display device according to the ambient brightness, and other display parameters of the display device, such as color temperature and the like, cannot be adjusted, so that the overall display effect of the display device is poor, and the experience of a user is poor.

A display device includes a display, a light sensor, and a controller.

In some embodiments, the display is used to display a target image, where the target image may be various media assets acquired from a network signal source, such as videos, pictures, and the like, and the target image may also be some UI interfaces of the display device, such as a user interface, and the like. FIG. 5 illustrates a schematic diagram of a user interface in some embodiments. When the user controls the display device to be powered on, the controller controls the display to display a user interface, the user interface includes a first navigation bar 500, a second navigation bar 510, a function bar 520, and a content display area 530, and the function bar 520 includes a plurality of function controls such as "view record", "my favorite", and "my application". The content displayed in the content display area 530 changes according to the selected controls in the first navigation bar 500 and the second navigation bar 510. For example, when the application panel page is applied, the user may trigger to enter the corresponding application panel by clicking a "my applications" control to input a display instruction for the application panel page.

In some embodiments, the light sensor is a color temperature sensor for collecting an ambient color temperature of an environment in which the display device is located, and the ambient color temperature may be an ambient light RGB value of the environment in which the display device is located. The optical sensor can be used as a detector to be arranged in the display device, and can also be used as an external device to be externally connected on the display device. For the light sensor externally connected to the display equipment, the light sensor can be connected to an external device interface of the display equipment and connected into the display equipment, and the ambient color temperature collected by the light sensor can be sent to the display equipment.

In some embodiments, the controller may obtain a target ambient color temperature collected by the light sensor. After the target environment color temperature is obtained, the controller can adjust the display parameters of the display device by combining the current target environment color temperature, so that the display parameters of the display device can be adapted to the environment, and the display effect is improved. Specifically, the display parameters of the target image in the display, such as a white balance value, may be adjusted.

Specifically, the display device has an ambient color temperature adjustment function. When the display equipment starts the function of adjusting the ambient color temperature, the display parameters can be automatically adjusted according to the ambient color temperature, so that the display effect is improved. The display device may be provided with an ambient color temperature adjustment mode. In the ambient color temperature adjustment mode, the display device may automatically adjust display parameters according to the ambient color temperature.

In some embodiments, the user may transmit the ambient color temperature adjustment mode instruction to the display apparatus by operating a designated key of the remote controller. And binding the corresponding relation between the environmental color temperature adjusting mode command and the remote controller key in advance in the actual application process. For example, an ambient color temperature adjustment mode key is arranged on the remote controller, when a user touches the key, the remote controller sends an ambient color temperature adjustment mode instruction to the controller, and at the moment, the controller controls the display device to enter an ambient color temperature adjustment mode. When the user touches the key again, the controller may control the display device to exit the ambient color temperature adjustment mode.

In some embodiments, the corresponding relationship between the ambient color temperature adjustment mode command and the plurality of remote controller keys may also be bound in advance, and when the user touches the plurality of keys bound to the ambient color temperature adjustment mode command, the remote controller issues the ambient color temperature adjustment mode command. In a feasible embodiment, the keys bound by the ambient color temperature adjustment mode command are direction keys (left, down, left, down) in sequence, that is, the remote controller sends the ambient color temperature adjustment mode command to the controller only when the user continuously touches the keys (left, down, left, down) within a preset time. By adopting the binding method, the situation that the environmental color temperature adjusting mode instruction is sent out due to misoperation of a user can be avoided. The embodiments of the present application are merely exemplary in providing several binding relationships between the ambient color temperature adjustment mode command and the key, and the binding relationship between the ambient color temperature adjustment mode command and the key may be set according to habits of a user in an actual application process, which is not limited herein.

In some embodiments, the user may send an ambient color temperature adjustment mode instruction to the display device by means of voice input using a sound collector, such as a microphone, of the display device to control the display device to enter the ambient color temperature adjustment mode. An intelligent voice system can be arranged in the display device, and the intelligent voice system can recognize voice of a user so as to extract instruction content input by the user. The user can input a preset awakening word through the microphone so as to start the intelligent voice system, and the controller can respond to the instruction input by the user. And inputting an ambient color temperature adjusting mode instruction within a certain time, so that the display equipment enters an ambient color temperature adjusting mode. For example, the user may enter "a certain classmate" to activate the intelligent speech system. And inputting 'entering an environment color temperature adjusting mode', and realizing sending an environment color temperature adjusting mode instruction to the display equipment.

In some embodiments, the user may send the ambient color temperature adjustment mode instruction to the display device through a preset gesture. The display device may detect the user's behavior through an image collector, such as a camera. When the user makes a preset gesture, the user may be considered to send an ambient color temperature adjustment mode instruction to the display device. For example, it can be set as: when the V-shaped word drawn by the user is detected, the user is judged to input an environmental color temperature adjusting mode instruction to the display device. The user can also send an ambient color temperature adjustment mode instruction to the display device through a preset action. For example, it may be set as: when it is detected that the user lifts up the left foot and the right hand at the same time, it is determined that the user inputs an ambient color temperature adjustment mode instruction to the display device.

In some embodiments, when the user controls the display device using the smart device, for example, using a mobile phone, an ambient color temperature adjustment mode instruction may also be sent to the display device. In the process of practical application, a control can be set in the mobile phone, whether the mobile phone enters the environmental color temperature adjusting mode or not can be selected through the control, so that an environmental color temperature adjusting mode instruction is sent to the controller, and at the moment, the controller can control the display equipment to enter the environmental color temperature adjusting mode.

In some embodiments, when the user controls the display device using the cell phone, a continuous click command may be issued to the cell phone. The continuous click command refers to: in a preset period, the number of times that a user clicks the same area of the mobile phone touch screen exceeds a preset threshold value. For example: when the user continuously clicks a certain area of the mobile phone touch screen for 3 times within 1s, the user is regarded as a continuous clicking instruction. After receiving the continuous click command, the mobile phone can send an ambient color temperature adjustment mode command to the display device, so that the controller controls the display device to enter an ambient color temperature adjustment mode.

In some embodiments, when the user uses the mobile phone to control the display device, the following may also be set: when the touch pressure value of a user on a certain area of the mobile phone touch screen exceeds a preset pressure threshold value, the mobile phone can send an ambient color temperature adjusting mode instruction to the display device.

An option of an ambient color temperature adjustment mode may also be set in the UI interface of the display device, and when the user clicks the option, the display device may be controlled to enter or exit the ambient color temperature adjustment mode.

In some embodiments, to prevent the user from triggering the ambient color temperature adjustment mode by mistake, when the controller receives the ambient color temperature adjustment mode command, the controller may control the display to display ambient color temperature adjustment mode confirmation information, so that the user performs a secondary confirmation to determine whether to control the display device to enter the ambient color temperature adjustment mode. Fig. 6 is a schematic diagram illustrating the display of the confirmation information of the ambient color temperature adjustment mode in the display device according to some embodiments.

Figure 7 illustrates a flow diagram for interaction of components of a display device in some embodiments.

When the display device enters the environment color temperature adjusting mode, the controller can acquire the target environment color temperature collected by the optical sensor firstly and adjust the display parameters of the display device according to the target environment color temperature, so that the display parameters can adapt to the environment where the display device is located, and the display effect is improved.

In some embodiments, after obtaining the target ambient color temperature, the controller may first convert the target ambient color temperature to the display color temperature. In the embodiment of the present application, the display color temperature refers to a CCT value (correlated color temperature) and the correlated color temperature refers to a kelvin rating value at which a color composition of the light source is closest to human perception of the color. Specifically, the controller may convert the target ambient color temperature into a CCT value by using a CCT algorithm, so as to obtain a display color temperature corresponding to an environment where the display device is currently located. For example, the target ambient color temperature may be processed by using a mccarmy correlated color temperature calculation formula, and the display color temperature may be obtained.

In some embodiments, in order to ensure the accuracy of the correlated color temperature, a sampling period and sampling times, for example, 10s and 4 times, may be preset. That is, the light sensor may continuously sample the ambient color temperature 4 times according to the period of 10, so as to obtain four ambient color temperatures. The controller can convert the four environmental color temperatures into CCT numerical values respectively, and obtain an average CCT numerical value of the four CCT numerical values, so that the average CCT numerical value is used as a display color temperature, the accuracy of correlated color temperature is improved, and the acquired environmental color temperature is more stable.

In some embodiments, after the display color temperature is obtained, the controller may detect the display color temperature, and determine whether the ambient color temperature of the environment where the display device is located is normal by determining whether the display color temperature is in the range of the color temperature threshold. In view of the acceptance of the color temperature by the human eye, when the color temperature is too small, the penetration of the light effect is strong, and when the color temperature is too large, the penetration of the light effect is weak, in both cases the human eye will feel uncomfortable. Therefore, a color temperature threshold value [ a, b ] can be preset, and can be [ 0, 7500K ]. And if the controller detects that the display color temperature is not in the range of the color temperature threshold value, judging that the ambient color temperature of the environment where the display equipment is located is abnormal, at the moment, the controller cannot adjust the display parameters of the display equipment, and judging whether the display color temperature corresponding to the next ambient color temperature is in the range of the color temperature threshold value or not after the light sensor obtains the next ambient color temperature. The color temperature threshold value can be set by a manufacturer of the display device, different manufacturers can set different color temperature threshold values, and the color temperature threshold values can also be set the same, and the embodiment of the application is not limited. When the display color temperature is detected to be within the range of the color temperature threshold value, the current display color temperature is considered to be normal, namely the ambient color temperature of the environment where the display equipment is located is normal, and the controller can adjust the display parameters of the display equipment according to the display color temperature.

In some embodiments, after the controller determines that the ambient color temperature of the environment in which the display device is located is abnormal, the controller may control the display to display a color temperature abnormality prompting interface, where the color temperature abnormality prompting interface is used to prompt the user to: the ambient color temperature of the environment where the current display device is located is an abnormal state, and a user can detect whether the optical sensor has a fault. FIG. 8 is a schematic diagram of a color temperature anomaly prompting interface in some embodiments.

In some embodiments, the controller may adjust the display parameters of the display device according to the converted display color temperature of the target ambient color temperature. Specifically, the controller may detect the display color temperature, determine a color temperature interval where the display color temperature is located, and obtain the target color temperature interval. In the embodiment of the present application, the color temperature interval refers to: and dividing the correlated color temperature into various interval ranges according to a preset color temperature threshold value by combining subjective evaluation of human beings on the correlated color temperature. By judging the range of the displayed color temperature, the color temperature range of the current displayed color temperature can be determined.

For example, the display color temperature may be divided into 6 color temperature sections as shown in table 1.

TABLE 1 color temperature interval

Color temperature interval	Minimum value of interval	Maximum value of interval
			Level1	L0	L1
Level2	L1	L2
			Level3	L2	L3
Level4	L3	L4
			Level5	L4	L5
Level6	L5	L6

Wherein: [ L0, L6 ] is a preset color temperature threshold value. L0, L1, L2, L3, L4, L5, L6 are boundary values of 6 color temperature intervals, and satisfy the relationship of L6> L5> L4> L3> L2> L1> L0. The color temperature range of the Level1 between the first color temperature zones is L0-L1, and can be 0-1500K. The color temperature range of the Level2 between the second color temperature regions is L1-L2, and can be 1500K-3000K. The color temperature range of the Level3 between the third color temperature zones is L2-L3, and can be 3000K-4500K. The color temperature range of the Level4 between the fourth color temperature regions is L3-L4, and can be 4500K-5500K. The color temperature range of the fifth color temperature interval Level5 is L4-L5, and may be 5500K-6500K. The color temperature range of the sixth color temperature interval Level6 is L5-L6, and may be 6500K-7500K. From the first color temperature interval to the sixth color temperature interval, the penetrating power of the light effect is gradually weakened. The controller may determine a target color temperature section where the display color temperature is located. For example, if the current display color temperature is in the range of L2-L3, the target color temperature interval in which the current display color temperature is located is the third color temperature interval Level3. It should be noted that, when the color temperature is small, the penetrating power of the light effect is strong, and the color tone is warm; when the color temperature is larger, the penetrating power of the light effect is weaker, and the color tone is colder. The third color temperature interval may be set as a normal color temperature interval, the first and second color temperature intervals may be warm color temperature intervals, and the fourth, fifth, and sixth color temperature intervals may be cold color temperature intervals.

In some embodiments, after the target color temperature interval where the display color temperature is located is determined, the display parameters corresponding to the target color temperature interval may be acquired. For each color temperature interval, display parameters corresponding to each color temperature interval may be preset, and the display parameters may include a white balance value, a contrast, color saturation, and the like. Specifically, a display parameter corresponding relationship may be preset, and the display parameter corresponding relationship is used to represent display parameters corresponding to each color temperature interval. Because the display color temperature can be determined according to the environmental color temperature, so that the color temperature interval is determined, the display parameter corresponding relation can also be used for representing the display parameters corresponding to different environmental color temperatures.

Taking a white balance value as an example, each color temperature interval corresponds to one white balance value, and when the color temperature is small, the white balance value can be set to be relatively small; when the color temperature is large, the white balance value may be set relatively large. Therefore, from the first color temperature section to the sixth color temperature section, the white balance value can be set from small to large. Table 2 shows display parameters corresponding to the color temperature intervals in some embodiments.

Table 2 shows the parameter correspondence

For example: when it is detected that the target color temperature interval where the display color temperature is located is a third color temperature interval Level3, it may be determined that the display parameters corresponding to the current target color temperature interval are: white balance value B3, contrast D3, and color saturation Y3. Meanwhile, the display parameters corresponding to the target color temperature interval can be set as target display parameters.

In some embodiments, the controller may adjust the display parameters of the display device according to the target display parameters. Specifically, the controller may adjust the display parameter of the target image to the target display parameter. For example, the initial display parameters of the display device are: white balance value B0, contrast D0, and color saturation Y0. When it is detected that the target color temperature interval where the color temperature is displayed is the Level4 between the fourth color temperature zones, the display parameter corresponding to the Level4 between the fourth color temperature zones can be determined, and the display parameter of the display device is updated to the display parameter corresponding to the Level4 between the fourth color temperature zones. I.e. the white balance value of the display device is updated from B0 to B4, the contrast of the display device is updated from D0 to D4, and the color saturation of the display device is updated from Y0 to Y4. Therefore, the display parameters of the display equipment can be automatically adjusted according to the ambient color temperature.

In some embodiments, when adjusting the white balance value according to the ambient color temperature, a white balance value adjustment amount may be preset for each color temperature interval, that is, the display parameter correspondence relationship is used to represent the white balance value adjustment amount corresponding to each color temperature interval. For example, the initial white balance value of the display device is B0, which can be expressed by RGB, where R is R0, G is G0, and B is B0. Each color temperature interval corresponds to an adjustment amount, and when the color temperature interval is detected to be a warm color temperature interval, the white balance value is reduced, and the corresponding white balance value adjustment amount is a reduction amount, for example, the adjustment amount corresponding to the first color temperature interval is B1, which includes an R value adjustment amount R1, a G value G1, and a B value B1. Wherein r1, g1 and b1 may be the same or different. And for the corresponding display color temperature between the first color temperature zones, the white balance value adjusted by the display equipment is R0-R1, G0-G1 and B0-B1. The adjustment amount corresponding to the second color temperature range is b2, and it should be noted that the color temperature of the first color temperature range is smaller than that of the second color temperature range, so the degree of warm tone is deeper, and the white balance value needs to be set smaller, that is, b1> b2. In the embodiment of the present application, the third color temperature interval is set as the normal color temperature interval, and the corresponding white balance value is the initial white balance value. In the fourth-sixth color temperature interval, the white balance value adjustment amounts are b4, b5 and b6 in sequence. The degree of cool tone gradually deepens, and thus the corresponding white balance value adjustment amount b4< b5< b6. Fig. 9 illustrates a schematic diagram of the display device adjusting the white balance value in some embodiments. When the display color temperature corresponding to the ambient color temperature is detected to be the first color temperature interval, the white balance value of the display device is reduced, the adjusted white balance value is R0-R1, G0-G1, and B0-B1.

In some embodiments, a detection period, for example, 10min, may be preset, and in each detection period, the display device may automatically adjust the display parameters according to the ambient color temperature. When the detection period is reached, the controller can control the light sensor to acquire the ambient color temperature at the current moment again, so that the display color temperature at the current moment is obtained. Furthermore, the controller can determine a color temperature interval corresponding to the display color temperature at the current moment, so as to determine a new target display parameter, and update the current display parameter of the display device to the new target display parameter, so that the display parameter adapts to the environmental color temperature at the current moment, so as to continuously improve the display effect of the display device and improve the user experience.

In some embodiments, considering that, for the display device, in addition to the display parameters, the brightness of the display device may also affect the user experience, the embodiments of the present application may also automatically adjust the relevant brightness of the display device according to the ambient brightness to adapt to the current ambient brightness. That is, the display apparatus may have an ambient brightness adjustment function in addition to the user ambient color temperature adjustment function. When the display equipment starts the ambient brightness adjusting function, the display equipment can be controlled to enter an ambient brightness adjusting mode, and the brightness of the display equipment is automatically adjusted according to the ambient brightness, so that the display effect is improved.

In some embodiments, the user may control whether the display device turns on the ambient color temperature adjustment function and/or the ambient brightness adjustment function. Specifically, the user may input an instruction to the display device instructing to display the image function interface. When the instruction is received, the controller may control the display to display the image function interface. FIG. 10 illustrates a schematic diagram of a graphical function interface in some embodiments. The image function interface comprises a plurality of image function options supported by the display equipment, and comprises the following steps: the system comprises a screen brightness mode adjusting function, an environment color temperature adjusting function, an environment brightness adjusting function, a regional light control adjusting function and a factory setting restoring function. Under the screen brightness mode adjusting function, a user can select a standard mode, a high-performance mode and an energy-saving mode; under the regional light control adjusting function, a user can select three kinds of regional light control, namely high, medium and low; the user can also turn on or off the ambient color temperature adjustment function and the ambient brightness adjustment function. The user can control whether the display equipment starts each image function or not through the image function interface.

When the user selects to start the environment color temperature adjusting function, the controller can control the display device to enter an environment color temperature adjusting mode, determine a target display parameter corresponding to the current target environment color temperature, and adjust the display parameter of the display device to the target display parameter.

When the user selects to start the ambient brightness adjusting function, the controller can also acquire the ambient brightness of the current environment where the display device is located, and automatically adjust the brightness of the display device according to the ambient brightness. Fig. 11 is a schematic diagram illustrating automatic brightness adjustment by a display device in some embodiments.

In some embodiments, when the display device enters the ambient brightness adjustment mode, the controller may first obtain the current ambient brightness. Specifically, a brightness sensor may be built in the display device, or may be externally connected to the display device through an external device interface. The current ambient brightness can be acquired by the brightness sensor.

In some embodiments, the controller may further obtain the current ambient brightness through the target ambient color temperature collected by the light sensor. Specifically, the controller may process the target ambient color temperature by using an algorithm for converting the color temperature into the brightness, so as to obtain the ambient brightness. For example, the ambient brightness may be obtained by using a weight calculation method, the target ambient color temperature may be an RGB value, and the ambient brightness may be obtained by previously assigning weight coefficients to the R value, the G value, and the B value, multiplying the R value, the G value, and the B value by the weight coefficients, and summing the R value, the G value, and the B value. The ambient brightness in the embodiment of the present application refers to luminous flux, i.e., lux value (lumen value). It should be noted that, if the brightness of the current environment of the display device is weak (for example, when the television is turned on without lighting at night), the Lux value is low, and at this time, the display device may set a relatively small brightness, so that the display device is more suitable for the current environment, and the played picture is not too dazzling. On the contrary, when the brightness of the surrounding environment is strong, the Lux value is large, and the display device can set a relatively large brightness, so that the picture of the display is bright enough, and human eyes can normally distinguish the television picture.

The ambient brightness is converted into a quantized Lux value, so that the intensity of the ambient brightness is judged, and the brightness which needs to be set currently by the display device is determined.

In some embodiments, after obtaining the ambient brightness, the controller may first detect the ambient brightness to determine whether the current ambient brightness is normal. Specifically, a brightness threshold may be set in advance. For example, if the range of the brightness values of the ambient light that can be collected by the brightness sensor is a-B, the range may be set as the brightness threshold. For another example, the luminance threshold may be obtained according to the color temperature threshold, and two adjacent points of the color temperature threshold are converted into corresponding luminances, and the two luminances are used as critical points of the luminance threshold, so as to determine the luminance threshold.

After determining the brightness threshold, the controller may determine whether the ambient brightness is within the range of the brightness threshold, so as to determine whether the ambient brightness of the environment where the display device is located is normal. When the ambient brightness is smaller than the minimum value of the brightness threshold, the ambient brightness is considered to be too weak at the moment, and human eyes are not suitable for using the display device in the current ambient brightness. That is, if the controller detects that the ambient brightness is not within the range of the brightness threshold, it determines that the ambient brightness of the environment in which the display device is located is abnormal. The brightness threshold may be set by a manufacturer of the display device, different manufacturers may set different ambient brightness, or the same ambient brightness, which is not limited in the embodiments of the present application. When the ambient brightness is detected to be within the range of the brightness threshold, the current ambient brightness is considered to be normal, and the controller can adjust the brightness of the display device according to the ambient brightness.

In some embodiments, when it is detected that the ambient brightness is not within the brightness threshold, that is, the ambient brightness of the environment where the display device is located is abnormal, the controller may control the display to display an ambient brightness abnormality prompting interface, where the ambient brightness abnormality prompting interface is configured to prompt the user to: the ambient brightness of the environment where the current display device is located is an abnormal state, and a user can detect whether the brightness sensor fails or not, and can also directly turn off the display device or adjust the brightness of the surrounding environment. FIG. 12 illustrates a schematic view of an ambient brightness exception prompt interface in some embodiments.

In some embodiments, the controller may adjust the brightness of the display device based on ambient brightness. Specifically, the controller may detect the ambient brightness, determine a brightness interval where the ambient brightness is located, and obtain a target brightness interval. In the embodiment of the present application, the luminance section refers to: and dividing the environment brightness according to a preset brightness threshold value to obtain each interval range by combining subjective evaluation of human beings on the environment brightness. By judging the range of the environment brightness, the target brightness range in which the current environment brightness is located can be determined.

Subjective human assessment of ambient light brightness can be divided into: particularly dark, normal, bright, etc. Taking four evaluations as an example, the luminance threshold may be divided into four evaluations, and each evaluation may correspond to one luminance interval or a plurality of luminance intervals. For example, the luminance threshold may be divided into 8 sections as a whole, where a particularly dark evaluation corresponds to 3 luminance sections, a dark evaluation corresponds to 2 luminance sections, a normal evaluation corresponds to 2 luminance sections, and a bright evaluation corresponds to 1 luminance section. Table 3 shows the division of the luminance sections.

TABLE 3

Luminance interval	Minimum value of interval	Maximum value of interval
			Level1	0	T1
Level2	T1	T2
			Level3	T2	T3
Level4	T3	T4
			Level5	T4	T5
Level6	T5	T6
			Level7	T6	T7
Level8	T7	T8

Wherein [ 0, T7 ] is a preset brightness threshold. 0,t 1, T2, T3, T4, T5, T6, T7, T8 are boundary values of 8 luminance sections, and satisfy the relationship of L8> L7> L6> L5> L4> L3> L2> L1> 0. From the first luminance section to the eighth luminance section, the ambient luminance is gradually increased. The brightness threshold value that can be set to the ambient brightness is 0-255. The ambient brightness 0-100 may be set to be a particularly dark evaluation type, and three brightness intervals may be provided, for example, a first brightness interval 0-30, a second brightness interval 30-65, and a third brightness interval 65-100. The ambient brightness 100-150 may be set to a dark evaluation type, and two brightness intervals may be provided, for example, a fourth brightness interval 100-125 and a fifth brightness interval 125-150. The ambient brightness 150-230 may be set to a normal evaluation type, and two brightness intervals may be provided, for example, a sixth brightness interval 150-190 and a seventh brightness interval 190-230. The ambient brightness 230-255 may be set to a bright evaluation type, and may be provided with a brightness section, for example, an eighth brightness section 230-255. The controller may determine a target brightness interval in which the ambient brightness is located. For example, if the current ambient brightness is in the range of L2-L3, the target brightness interval in which the current ambient brightness is located is the third brightness interval.

In some embodiments, two adjacent luminance intervals may be discontinuous. For example, the first luminance interval is (0 cd/m2, 10cd/m 2), and the second luminance interval may be (13 cd/m 2-50 cd/m 2). And a luminance section (10 cd/m2, 13cd/m 2) between the first luminance section and the second luminance section may be referred to as a luminance buffer section. The luminance buffer section is: when the brightness change of the ambient light is small, the human cannot respond to the small change, in this case, the human does not change the subjective evaluation of the ambient light brightness, and the brightness interval in which the ambient light brightness value is located in this case is called a brightness buffer interval. When the current environment brightness is detected to be in the brightness buffer interval, the controller does not adjust the brightness of the display device.

In some embodiments, after determining the target brightness interval in which the ambient brightness is located, the controller may adjust the brightness of the display device according to the target brightness interval. It should be noted that the material of the display may be different, and the parameter for measuring the brightness of the display may be different for different types of displays. For the first type of display, the backlight brightness can be measured by using a PLC curve. For the second type of display, the backlight brightness can be measured by the Pwm value.

In the embodiments of the present application, the first type of display refers to an OLED screen. An OLED (organic light-Emitting Diode) does not need a separate backlight or a color filter, can emit light by itself, generally comprises a light-Emitting Diode array, and each OLED pixel can distribute three colors of red, green and blue. The backlight brightness of the OLED screen can be obtained using a PLC curve.

A PLC (peak luminance control) curve may be applied to adjust screen luminance of a display employing the OLED. The abscissa of the PLC curve is the gray value of the display image, and the ordinate is the peak brightness of the display. The PLC curve adjusts the peak brightness of the display according to the gray value of the display image, so that the display picture has more stereoscopic impression. The backlight brightness of the first type of display can be further adjusted through the PLC curve corresponding to the ambient brightness.

In the embodiments of the present application, the second type of display refers to other screens than OLED screens, such as LED screens or LCD screens. Taking LCD screens as an example, LCDs (Liquid-crystal display) require a backlight source and can mix different colors based on white light passing through a color filter. The white light can form basic colors such as red, green and blue after passing through, and the light transmittance of each pixel point is controlled through current, so that the color of the pixel is controlled. The backlight brightness of an LCD screen can be represented by Pwm values.

Pwm (Pulse-width modulation) is a technique for controlling the brightness and darkness of the backlight by controlling the duty ratio of high and low levels in a time period, and the Pwm value can be used to measure the backlight of a display device. The backlight brightness of the second type display can be further adjusted through the Pwm value corresponding to the ambient brightness.

In some embodiments, the brightness of the display device may include, in addition to the backlight brightness, the brightness of the target image, i.e., the brightness of each pixel in the target image. The brightness of a target image can be measured by using a Gamma (Gamma) curve regardless of the first type display or the second type display.

The Gamma curve is used for representing the mapping relationship between the gray value and the brightness value of the pixel points of the image and is used for adjusting the brightness value of the pixel points of the image by combining the gray value of the pixel points of the image. The abscissa of the gamma curve represents the gray value, and the ordinate represents the brightness of the pixel point of the adjusted display image, i.e., the brightness of the pixel point color of the adjusted display image. For example, if the color of each pixel point may include red, green, and blue, the brightness of the color of the pixel point of the display image is adjusted, or the brightness ratio of the red, green, and blue of the pixel point of the display image is adjusted. The brightness of the pixel color can also be described as the brightness of the pixel color.

The brightness of the displayed image can be further adjusted through the gamma curve corresponding to the ambient brightness.

Fig. 13 shows a flow chart of the display device adjusting the brightness of different types of displays.

In some embodiments, the controller may first detect the type of display.

When the display is detected to be the first type display, the controller can acquire a target PLC curve and a target gamma curve corresponding to the target brightness interval. Furthermore, the backlight brightness of the display device can be adjusted according to the target PLC curve, and the brightness of each pixel point in the target image can be adjusted according to the target gamma curve.

In some embodiments, when acquiring the target PLC curve corresponding to the target luminance interval, the controller may first acquire an initial PLC curve of the display device. For the target brightness interval, the controller can obtain the PLC curve offset corresponding to the target brightness interval, and further, adjust the initial PLC curve by the PLC curve offset, so as to obtain the target PLC curve. FIG. 14 illustrates a flow diagram for adjusting backlight brightness of a display device in some embodiments.

In some embodiments, for each target brightness interval, a PLC curve offset corresponding to each target brightness interval may be preset. Specifically, a PLC curve offset corresponding relationship may be preset, and the PLC curve offset corresponding relationship is used to indicate a PLC curve offset amount corresponding to each target luminance section.

It should be noted that, for each target brightness interval, there may be a plurality of PLC curve offsets corresponding to the target brightness interval. The PLC curve may be a curve made up of a number of sub-segments, for example the range of gray values represented by the abscissa of the PLC curve may be normalized to a range of 0-255, i.e. the PLC curve may comprise 256 gray values. The initial PLC curve may be divided into P subsections, each subsection may include the same or different number of gray values, and each subsection may correspond to a PLC curve offset. The offset value may be an offset of a maximum luminance value (may also be referred to as peak luminance) corresponding to the gradation value. And offsetting the offset corresponding to the sub-section on the basis that each sub-section of the initial PLC curve comprises the maximum brightness value corresponding to each gray value, thereby obtaining the adjusted sub-section. And adjusting each subsection of the initial PLC curve according to the offset corresponding to each subsection in the target brightness interval to obtain the adjusted target PLC curve.

In some embodiments, when acquiring the target gamma curve corresponding to the target brightness interval, the controller may first acquire an initial gamma curve of the display device. For the target brightness interval, the controller may obtain a gamma curve offset corresponding to the target brightness interval. And adjusting the initial gamma curve through the gamma curve offset to obtain a target gamma curve.

In some embodiments, for each target brightness interval, the gamma curve offset corresponding to each target brightness interval may be preset. Specifically, a gamma curve offset corresponding relationship may be preset, and the gamma curve offset corresponding relationship is used to indicate a gamma curve offset corresponding to each target brightness interval.

It should be noted that, for each target brightness interval, there may be a plurality of gamma curve offsets corresponding to the target brightness interval. The gamma curve may be a curve obtained by sequentially connecting a plurality of points, that is, the gamma curve may include Q nodes, and the gray value range represented by the abscissa of the gamma curve may be normalized to a range of 0 to 255, that is, the gamma curve may include 256 gray values, the points corresponding to the Q gray values may be selected as the nodes, and the nodes are sequentially connected according to the order of the gray values from small to large, so that the gamma curve may be obtained. Each node of the initial gamma curve may correspond to a gamma curve offset. And adjusting each node according to the gamma curve offset corresponding to each node to obtain all the adjusted nodes, and then connecting all the nodes to obtain the target gamma curve. FIG. 15 illustrates a flow diagram for adjusting the brightness of a target image in some embodiments.

In some embodiments, after the target PLC curve and the target gamma curve are obtained, the backlight brightness of the display device and the brightness of each pixel point in the target image may be adjusted.

In some embodiments, if it is detected that the display is a second type display, the controller may obtain a target brightness corresponding to the target brightness interval and a target gamma curve. Further, the backlight brightness of the display device can be adjusted according to the target brightness, and the brightness of each pixel point in the target image can be adjusted according to the target gamma curve. The target luminance in the embodiment of the present application refers to a Pwm value.

In some embodiments, the Pwm value corresponding to each brightness interval may be preset. A Pwm value correspondence may be preset, and the Pwm value correspondence is used to indicate a Pwm value corresponding to each luminance section. After the target brightness corresponding to the target brightness interval is determined, the backlight brightness of the display device may be adjusted to the target brightness, that is, the Pwm value corresponding to the target brightness interval. FIG. 16 illustrates a flow diagram for adjusting backlight brightness of a display device in some embodiments.

When the display device displays the target image, the backlight brightness of the display device can be determined according to the target PLC curve or the target brightness, and the brightness of the target image can be determined according to the target gamma curve. When the ambient brightness is low, the brightness of the display device needs to be low so that the user does not feel too dazzling, and when the ambient brightness is high, the brightness of the display device needs to be high so that the user can clearly see the target image. The brightness interval corresponding to the ambient brightness is from the first brightness interval to the eighth brightness interval, and the brightness of the display device is gradually increased. In this embodiment of the present application, the brightness of the display device may be kept unchanged from the initial brightness under the ambient brightness corresponding to the sixth brightness interval and the seventh brightness interval. Fig. 17 is a diagram illustrating brightness adjustment of a display device in some embodiments. Wherein the initial brightness of the display device is: the backlight brightness is p0 and the image brightness is q0. When detecting that the ambient brightness corresponds to the eighth brightness interval, the human being evaluates the ambient brightness as bright, that is, the display device is in a bright environment, and the brightness of the display device needs to be increased. In the eighth luminance section, the luminance corresponding to the display device is the backlight luminance p8, the image luminance q8, and p8> p0, q8> q0.

In some embodiments, it is considered that when the ambient brightness is a particularly dark evaluation type, there is a probability that the display color temperature is inaccurate, so that the display parameters adapted to the environment cannot be set, resulting in a poor picture effect. Therefore, the controller may detect the target luminance section after determining the target color temperature section and the target luminance section. FIG. 18 illustrates a flow diagram for adjusting brightness of a display device in some embodiments.

If the target brightness interval is the preset brightness interval, and the brightness interval corresponding to the especially dark evaluation type is set in the embodiment of the application, the controller does not adjust the display parameters of the display device according to the display parameters of the target color temperature interval, but directly takes the display parameters corresponding to the first color temperature interval as the target display parameters, and then adjusts the display parameters of the display device according to the target display parameters. If the target brightness interval is not the brightness interval corresponding to the especially dark evaluation type, the controller may take the display parameter of the target color temperature interval as the target display parameter, and then adjust the display parameter of the display device according to the target display parameter.

In some embodiments, if the target brightness interval is a preset brightness interval, the controller adjusts the brightness of the display device according to the first brightness interval.

When the display is a first-type display, the controller may directly adjust the backlight brightness of the display device according to the first brightness interval, specifically, adjust the initial PLC curve according to the PLC curve offset corresponding to the first brightness interval to obtain a first PLC curve corresponding to the first brightness interval, and adjust the backlight brightness of the display device according to the first PLC curve. When the display is a second type display, the controller directly determines a first brightness corresponding to the first brightness interval, that is, a Pwm value corresponding to the first brightness interval, and adjusts the backlight brightness of the display device to the first brightness.

Meanwhile, the controller can directly adjust the brightness of the target image according to the first brightness interval. Specifically, the initial gamma curve may be adjusted according to the gamma curve offset corresponding to the first brightness interval to obtain a first gamma curve corresponding to the first brightness interval, and the brightness of the target image may be adjusted according to the first gamma curve.

In some embodiments, if the target brightness interval is a preset brightness interval, the controller may also continue to adjust the brightness of the display device according to the target brightness interval, or may adjust the brightness of the display device according to any one of the preset brightness intervals, that is, all brightness intervals corresponding to the especially dark evaluation type. The embodiments of the present application are not particularly limited.

An embodiment of the present application further provides a display parameter adjustment method, which is applied to a display device, and as shown in fig. 19, the method includes:

step 1901, a target ambient color temperature collected by the light sensor is obtained.

Step 1902, obtaining a target display parameter corresponding to the target ambient color temperature according to a preset display parameter corresponding relationship, where the display parameter corresponding relationship represents display parameters corresponding to different ambient color temperatures.

Step 1903, adjusting the display parameters of the target image to the target display parameters.

The same and similar parts in the embodiments in this specification are referred to each other, and are not described herein again.

Those skilled in the art will readily appreciate that the techniques of the embodiments of the present invention may be implemented using software plus any required general purpose hardware platform. Based on such understanding, the technical solutions in the embodiments of the present invention may be essentially or partially implemented in the form of software products, which may be stored in a storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and include instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method in the embodiments or some parts of the embodiments of the present invention.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the scope of the technical solutions of the embodiments of the present application.

The foregoing description, for purposes of explanation, has been presented in conjunction with specific embodiments. However, the illustrative discussions above are not intended to be exhaustive or to limit the embodiments to the precise forms disclosed above. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles and the practical application, to thereby enable others skilled in the art to best utilize the embodiments and various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. A display device, comprising:

a display configured to display a target image;

the light sensor is configured to acquire the ambient color temperature of the environment where the display device is located;

a controller configured to:

acquiring a target environment color temperature acquired by a light sensor;

acquiring target display parameters corresponding to the target environmental color temperature according to a preset display parameter corresponding relation, wherein the display parameter corresponding relation represents display parameters corresponding to different environmental color temperatures;

and adjusting the display parameters of the target image to the target display parameters.

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

in the step of obtaining the target display parameter corresponding to the target ambient color temperature according to the preset display parameter corresponding relation,

converting the target ambient color temperature to a display color temperature;

determining a target color temperature interval where the display color temperature is located;

and acquiring display parameters corresponding to the target color temperature interval according to the display parameter corresponding relation, and taking the display parameters as target display parameters.

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

after performing the step of converting the target ambient color temperature to a display color temperature,

judging whether the display color temperature is in a preset color temperature threshold value or not;

if yes, executing a step of determining a target color temperature interval corresponding to the display color temperature; if not, no processing is performed.

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

when an instruction which indicates to display an image function interface and is input by a user is responded, controlling a display to display the image function interface, wherein the image function interface comprises a plurality of image function options including an environment color temperature adjusting function;

and when a selection instruction which is input in the image function interface by a user and is used for selecting the environmental color temperature adjusting function is detected, executing a step of determining target display parameters corresponding to the target environmental color temperature.

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

after the step of obtaining the target ambient color temperature collected by the light sensor is performed,

responding to an instruction which is input by a user and indicates to start an environment brightness adjusting function, and converting the target environment color temperature into environment brightness;

determining a target brightness interval where the ambient brightness is located;

when the display is a first type display, acquiring a target PLC curve corresponding to the target brightness interval and adjusting the backlight brightness of the display equipment according to the target PLC curve; when the display is a second-type display, acquiring target brightness corresponding to the target brightness interval and adjusting backlight brightness of the display equipment to the target brightness;

and acquiring a target gamma curve corresponding to the target brightness interval and adjusting the brightness of each pixel point in the target image according to the target gamma curve.

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

in the step of acquiring the PLC curve corresponding to the target brightness interval;

acquiring an initial PLC curve of display equipment;

acquiring a PLC curve offset corresponding to the target brightness interval according to a preset PLC curve offset relation;

and adjusting the initial PLC curve according to the PLC curve offset to obtain a target PLC curve.

7. The display device according to claim 5, wherein the controller is further configured to:

in the step of acquiring the target gamma curve corresponding to the target brightness interval;

acquiring an initial gamma curve of the display equipment;

acquiring a gamma curve offset corresponding to the target brightness interval according to a preset gamma curve offset relation;

and adjusting the initial gamma curve according to the gamma curve offset to obtain a target gamma curve.

8. The display device according to claim 5, wherein the controller is further configured to:

after performing the step of determining the target color temperature interval in which the display color temperature is located,

judging whether the target brightness interval is a preset brightness interval or not;

if the target brightness interval is a preset brightness interval, taking the display parameter corresponding to the first color temperature interval as a target display parameter, and executing the step of adjusting the display parameter of the target image to the target display parameter;

and if the target brightness interval is not the preset brightness interval, executing the step of acquiring the display parameters corresponding to the target color temperature interval according to the display parameter corresponding relation.

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

if the target brightness interval is a preset brightness interval, when the display is a first type of display, acquiring a first PLC curve corresponding to the first brightness interval and adjusting the backlight brightness of the display equipment according to the first PLC curve, and when the display is a second type of display, acquiring first brightness corresponding to the first brightness interval and adjusting the backlight brightness of the display equipment to the first brightness;

and acquiring a first gamma curve corresponding to a first brightness interval and adjusting the brightness of each pixel point in the target image according to the first gamma curve.

10. A display parameter adjusting method is applied to display equipment and is characterized by comprising the following steps:

acquiring a target environment color temperature collected by a light sensor;

acquiring target display parameters corresponding to the target environmental color temperatures according to preset display parameter corresponding relations, wherein the display parameter corresponding relations represent display parameters corresponding to different environmental color temperatures;