CN112863437A - Display apparatus and brightness control method - Google Patents

Display apparatus and brightness control method Download PDF

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Publication number
CN112863437A
CN112863437A CN202110057305.6A CN202110057305A CN112863437A CN 112863437 A CN112863437 A CN 112863437A CN 202110057305 A CN202110057305 A CN 202110057305A CN 112863437 A CN112863437 A CN 112863437A
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brightness
peak
control curve
illuminance
illumination
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Granted
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CN202110057305.6A
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CN112863437B (en
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刁玉洁
沈海杰
王烨东
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Hisense Visual Technology Co Ltd
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Hisense Visual Technology Co Ltd
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • G09G3/3413—Details of control of colour illumination sources
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

The embodiment of the application provides a display device and a brightness control method, relates to the technical field of display, and can dynamically adjust a peak brightness control curve according to the illumination intensity of the environment where the display device is located, so that screen brightness adjustment under different illumination intensities is realized, and the use experience of a user is improved. The method comprises the following steps: determining the target illumination of the environment where the display device is located; determining a corresponding target peak brightness control curve according to the target illuminance; and adjusting the brightness of the display equipment according to the target peak brightness control curve. The application is used for brightness adjustment of the display device.

Description

Display apparatus and brightness control method
Technical Field
The present application relates to the field of display technologies, and in particular, to a display device and a brightness control method.
Background
Currently, the displays commonly used include Liquid Crystal Displays (LCD) and organic light-emitting diodes (OLED), which have different brightness adjustment modes. As shown in fig. 1, a peak brightness control (PLC) curve for an LCD and an OLED is provided.
The overall brightness of the display is adjusted by the LCD through backlight, and the brightness of the backlight can be adjusted according to the illuminance of the environment where the LCD is located, so that the brightness of the display is adjusted, the LCD can provide comfortable brightness, the brightness adjustment curve of the LCD can be shown in figure 1, and the brightness of a full white field is the same as the brightness of a small-area bright picture field. In practice, because the OLED displays a large-area bright image in a large proportion, the brightness of the display is usually adjusted by the brightness of the large-area bright image; the PLC curve when the OLED adjusts the display according to the large-area bright image can be as shown in fig. 1, and when the environment where the OLED is located is dark, the brightness of the display is low, which affects the user experience.
Disclosure of Invention
The embodiment of the application provides a display device and a brightness control method, which can dynamically adjust a peak brightness control curve according to the illumination intensity of the environment where the display device is located, so that the screen brightness adjustment under different illumination intensities is realized, and the use experience of a user is improved.
In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:
in a first aspect, there is provided a display device comprising: a display and a controller.
Wherein the display is configured to: and displaying the picture.
The controller comprises a plurality of peak brightness control curves, and the plurality of peak brightness control curves correspond to a plurality of different illumination intensities; the controller is configured to:
determining the target illumination of the environment where the display device is located;
determining a corresponding target peak brightness control curve according to the target illuminance;
and adjusting the brightness of the display equipment according to the target peak brightness control curve.
In a second aspect, a brightness control method is provided, which is applied to the display device provided in the first aspect, and the display device includes a controller, the controller including a plurality of peak brightness control curves, the plurality of peak brightness control curves corresponding to a plurality of different illumination intensities; the method comprises the following steps:
determining the target illumination of the environment where the display device is located;
determining a corresponding target peak brightness control curve according to the target illuminance;
and adjusting the brightness of the display equipment according to the target peak brightness control curve.
The display device provided by the embodiment of the application can determine different peak brightness control curves according to different illuminance of the current environment where the display device is located, the peak brightness control curves can provide the peak point brightness required by a plurality of brightness adjustment for the display device, the ratio of bright pictures in the display is different according to the display device, the display can set the picture brightness to be different peak point brightness, comfortable visual impression is provided for a user, and user experience is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a peak luminance control curve of an LCD and an OLED provided in an embodiment of the present application;
fig. 2 is a schematic view of an operation scenario between a display device and a control apparatus according to an embodiment of the present disclosure;
FIG. 3 is a schematic diagram illustrating various peak luminance control curves of an OLED according to an embodiment of the present disclosure;
fig. 4 is a flowchart illustrating a brightness control method according to an embodiment of the present disclosure;
fig. 5 is a second flowchart illustrating a brightness control method according to an embodiment of the present application;
fig. 6 is a mapping diagram of an illumination brightness mapping table according to an embodiment of the present disclosure;
fig. 7 is a third schematic flowchart of a brightness control method according to an embodiment of the present application;
fig. 8 is a fourth schematic flowchart illustrating a brightness control method according to an embodiment of the present application;
fig. 9 is a schematic diagram of a target peak luminance control curve according to an embodiment of the present disclosure.
Detailed Description
To make the objects, embodiments and advantages of the present application clearer, the following description of exemplary embodiments of the present application will clearly and completely describe the exemplary embodiments of the present application with reference to the accompanying drawings in the exemplary embodiments of the present application, and it is to be understood that the described exemplary embodiments are only a part of the embodiments of the present application, and not all of the embodiments.
All other embodiments, which can be derived by a person skilled in the art from the exemplary embodiments described herein without inventive step, are intended to be within the scope of the claims appended hereto. In addition, while the disclosure herein has been presented in terms of one or more exemplary examples, it should be appreciated that aspects of the disclosure may be implemented solely as a complete embodiment.
It should be noted that the brief descriptions of the terms in the present application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of the present application. These terms should be understood in their ordinary and customary meaning unless otherwise indicated.
The terms "first," "second," "third," and the like in the description and claims of this application and in the above-described drawings are used for distinguishing between similar or analogous objects or entities and are not necessarily intended to limit the order or sequence of any particular one, Unless otherwise indicated. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.
Furthermore, the terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a product or device that comprises a list of elements is not necessarily limited to those elements explicitly listed, but may include other elements not expressly listed or inherent to such product or device.
The term "module," as used herein, refers to any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic, or combination of hardware and/or software code that is capable of performing the functionality associated with that element.
The term "remote control" as used in this application refers to a component of an electronic device (such as the display device disclosed in this application) that is typically wirelessly controllable over a relatively short range of distances. Generally, an infrared and/or Radio Frequency (RF) signal and/or bluetooth is used to connect with the electronic device, and may also include functional modules such as WiFi, wireless Universal Serial Bus (USB), bluetooth, and motion sensor. For example: the hand-held touch remote controller replaces most of the physical built-in hard keys in the common remote control device with the user interface in the touch screen.
Fig. 2 is a schematic diagram illustrating an operation scenario between a display device and a control apparatus according to an embodiment. As shown in fig. 2, the user may operate the display device 200 through the mobile terminal 300 and the control apparatus 100.
In some embodiments, the control apparatus 100 may be a remote controller, and the communication between the remote controller and the display device 200 includes an infrared protocol communication or a bluetooth protocol communication, and other short-distance communication methods, etc., and the display device 200 is controlled by wireless or other wired methods. The user may input a user instruction through a key on a remote controller, voice input, control panel input, etc. to control the display apparatus 200. Such as: the user may input a corresponding control command through a volume up/down key, a channel control key, up/down/left/right movement keys, a voice input key, a menu key, a power on/off key, etc. on the remote controller, to implement a function of controlling the display device 200.
In some embodiments, mobile terminals, tablets, computers, laptops, and other smart devices may also be used to control the display device 200. For example, the display device 200 is controlled using an application program running on the smart device. The application program can provide various controls for a user in an intuitive User Interface (UI) on a screen associated with the smart device through configuration.
In some embodiments, the mobile terminal 300 may install a software application with the display device 200 to implement connection communication through a network communication protocol for the purpose of one-to-one control operation and data communication. Such as: the control instruction protocol can be established between the mobile terminal 300 and the display device 200, the remote control keyboard is synchronized to the mobile terminal 300, and the function of controlling the display device 200 is realized by controlling the user interface on the mobile terminal 300; the audio and video content displayed on the mobile terminal 300 may also be transmitted to the display device 200, so as to implement a synchronous display function.
As also shown in fig. 2, the display apparatus 200 also performs data communication with the server 400 through various communication means. The display apparatus 200 may be allowed to make a communication connection through a Local Area Network (LAN), a Wireless Local Area Network (WLAN), and other networks. The server 400 may provide various contents and interactions to the display apparatus 200. Illustratively, the display device 200 receives software program updates, or accesses a remotely stored digital media library by sending and receiving information, and Electronic Program Guide (EPG) interactions. The server 400 may be a cluster or a plurality of clusters, and may include one or more types of servers. Other web service contents such as video on demand and advertisement services are provided through the server 400.
The display device 200 may be a liquid crystal display, an organic light-emitting diode (OLED) display, or a projection display device. The specific display device type, size, resolution, etc. are not limiting, and those skilled in the art will appreciate that the display device 200 may be modified in performance and configuration as desired.
The display apparatus 200 may additionally provide an intelligent network tv function providing a computer support function in addition to the broadcast receiving tv function, including but not limited to a network tv, an intelligent tv, an Internet Protocol Tv (IPTV), and the like.
As described in the background art, the LCD adjusts the brightness of the display through the backlight module, so that the brightness of the display can change with the change of the ambient light illumination, but the brightness of the full white field is the same as the brightness of the small-area bright picture field, that is, after the brightness corresponding to the current ambient light illumination is determined, the brightness of the display does not change. Therefore, the brightness of the display can be adjusted by the LCD according to the ambient light illumination, so that the problem that the brightness of the display is too high and glaring in a dark environment, the brightness of the display is too low in a bright environment, the contrast is not good is solved, and the user experience is improved. The OLED is a self-luminous display device, although the display brightness of the OLED can change with the change of the ambient light illuminance, when the display displays different bright picture ratios, the display brightness also changes, which seriously affects the user experience of the OLED.
Illustratively, as shown in fig. 3, a peak luminance control curve for adjusting the luminance of the display by the OLED is provided, and fig. 3 shows a corresponding peak luminance control curve when the OLED adjusts the luminance of the display according to a large-area bright picture and a corresponding peak luminance control curve when the luminance of the display is adjusted according to a small-area picture. When the OLED adjusts the brightness of the display according to the large-area bright picture brightness curve, the brightness change of the display is not obvious, and a user cannot sense the corresponding brightness change; when the brightness of the display is adjusted according to the brightness curve of the small-area bright picture, the brightness of the large-area bright picture is too low, and the user experience is affected. Although there is a method for adjusting the brightness of the display by using the two brightness curves, the method still has the problems of insignificant brightness change and low brightness.
In view of the above problems, an embodiment of the present application provides a display device, which can associate a peak brightness control curve of the display device with the illuminance of an environment where the display device is located, and limit a brightness variation range of the display device through the peak brightness on the peak brightness control curve, so as to provide a comfortable impression for the display device under different illuminances, and also avoid the problems that the brightness of the display device is too low and the brightness variation is not obvious, thereby improving user experience.
As shown in fig. 4, an embodiment of the present application provides a brightness control method applied to a display device, where the display device at least includes a display and a controller. In some embodiments, the display device herein is an OLED device.
Wherein the display is configured to: and displaying the picture. The controller is configured to perform the steps of:
s101, determining the target illuminance of the environment where the display device is located.
Specifically, the display device may be a television, or may be a self-light emitting display device such as a mobile phone, and for example, the display device may be the display device 200 shown in fig. 1. Depending on the display device, the process of determining the ambient light level of the display device by the controller is different.
For example, when the display device is a television, if the user starts the television, the controller may detect a target illuminance of an environment where the current television is located. When the display device is a mobile phone, if the user controls the mobile phone to be started, the controller can also detect the target illuminance of the current environment where the mobile phone is located; of course, when the mobile phone is in the screen unlocking and locking state, the controller may also detect the illuminance of the current environment where the mobile phone is located.
In some embodiments, the controller may include a light sensing device for detecting a target illumination of an environment where the display device is currently located; of course, a person skilled in the art may also determine the target illuminance of the environment where the display device is located by other methods, which is not limited to this embodiment of the present application.
And S102, determining a corresponding target peak brightness control curve according to the target illuminance.
Specifically, in this embodiment of the present application, the display device may adjust the brightness of its display according to a peak brightness control curve, where the peak brightness control curve may indicate the brightness of the display corresponding to different average image levels (APLs), for example, the brightness of the display corresponding to a first APL is a first brightness, and the brightness corresponding to a second APL is a second brightness, and so on.
After the target illuminance of the environment where the display device is located is determined in step S101, a corresponding target peak luminance control curve may be determined according to the target illuminance.
In some embodiments, the controller includes a plurality of peak brightness control curves corresponding to a plurality of different light levels. As shown in fig. 5, step S102 may specifically be:
and determining a corresponding target peak brightness control curve according to the target illumination and the illumination brightness mapping table.
The illumination brightness mapping table is used for indicating the corresponding relation between the illumination and the peak brightness control curve.
Specifically, the illumination brightness mapping table herein includes mapping relationships between a plurality of peak brightness control curves and illumination intervals. The controller may determine an illumination interval in which the illumination is located according to a target illumination of an environment in which the display device is located, and determine a corresponding target peak luminance control curve from the illumination luminance mapping table according to the illumination interval.
For example, the illumination intensity mapping table may be as shown in table 1 below:
TABLE 1
Figure BDA0002901112090000071
As shown in table 1, the illumination brightness mapping table includes a plurality of peak brightness control curves, and corresponds to a first peak brightness control curve if the illumination interval is 0-50 lux; when the illumination interval is 50-100lux, corresponding to a second peak brightness control curve; when the illumination interval is 100-. The first peak luminance control curve is a peak luminance control curve corresponding to an illumination interval of 0-50lux, and the second peak luminance control curve is a peak luminance control curve corresponding to an illumination interval of 50-100lux, and so on, which is not repeated herein. Of course, the illuminance interval division in table 1 is merely exemplary, and those skilled in the art may set it as needed.
APL1-APL8 in table 1 are 8 peak points on the peak luminance control curve, and the luminance values of different peak luminance control curves at the 8 peak points are different, for example, the luminance values of the first peak luminance control curve at the 8 peak points are a1, a2, …, and A8, respectively, that is, the luminance of the first peak luminance control curve at the peak point APL1 is a1, the luminance at the peak point APL2 is a2, and so on; the brightness values of the second peak brightness control curve at the 8 peak points are respectively B1, B2, … and B8, and so on, C1-C8, D1-D8 and E1-E8 are respectively the brightness values of the third peak brightness control curve, the fourth peak brightness control curve and the fifth peak brightness control curve at the 8 peak points APL1-APL 8. As shown in fig. 6, the map of table 1 is shown, where the luminance value of APL1 is highest, the luminance value of APL8 is lowest, and the luminance of these peak points decreases smoothly from APL1 to APL 8. Fig. 6 shows only a part of the peak luminance control curves, and the intersections of the respective peak luminance control curves with the broken lines in the figure are the peak points of these peak luminance control curves, such as APL1, APL2, and so on.
If the target illuminance of the environment where the display device is located, which is determined in step S101, is 70lux, and the target illuminance is located in an illuminance interval of 50-100lux, it may be determined according to the illuminance mapping table that the peak luminance control curve corresponding to the illuminance is a second peak luminance control curve, that is, the peak luminance control curve corresponding to the peak point luminance of B1-B8; if the target illuminance of the environment where the display device is located is 300lux and the target illuminance is located in the illuminance interval 200lux 300lux, the peak luminance control curve corresponding to the illuminance may be determined to be a fourth peak luminance control curve according to the illuminance mapping table, that is, the peak luminance control curve corresponding to the peak point luminance D1-D8.
In this embodiment, 0 to 50lux means that the illumination interval is greater than 0lux and less than or equal to 50 lux; the illumination interval of 50-100lux is greater than 50lux and less than or equal to 100lux, and so on, and other illumination intervals are not described herein again.
In some embodiments, APL1-APL8 may be APL 25%, APL 35%, APL 45%, APL 55%, APL 65%, APL 75%, APL 85%, and APL 100% in this order, and the display brightness of the display device may be adjusted at the brightness corresponding to these peak points. Of course, the APL ratios corresponding to these peak points may also be set by those skilled in the art, and this embodiment is not limited thereto.
In some embodiments, the display device may further comprise a memory configured to: and storing the illumination brightness mapping table. At this time, the controller may acquire the illumination brightness mapping table from the memory and determine a corresponding target peak brightness control curve in combination with the target illumination. Of course, in some embodiments, the illumination intensity mapping table may also be stored in the controller.
In some embodiments, as shown in fig. 7, before step S101, the controller may be further configured to determine an illumination intensity mapping table, which may be determined by:
s201, determining a peak brightness control curve of the display device in each illumination interval according to the initial peak brightness control curve and a preset formula.
Wherein the predetermined formula is related to the comfort illuminance of the illuminance interval.
Specifically, the preset formula here may be:
P′i＝(Pi/Px)*L；
P″i＝R*P′i。
wherein, PiControlling the brightness of the peak point on the curve for the initial peak brightness, PxIs the brightness corresponding to the APL with the highest bright picture ratio in the display device, L is the comfortable illuminance, P ', of the environment where the display device is currently located'iThe illuminance of a peak point on the peak brightness control curve corresponding to the initial peak brightness control curve; p ″)iThe brightness of the corresponding peak point on the peak brightness control curve is shown, R is the reflection coefficient, and R is less than 1. The initial peak luminance control curve is a default luminance adjustment curve of the display device, and the controller may adjust the luminance of the display device according to the initial peak luminance control curve when the peak luminance control curve is not set by the display device.
For example, the brightness of each peak point on the initial peak brightness control curve may be, in order: p1＝255，P2＝225，P3＝205，P4＝185，P5＝165，P6＝145，P7＝120，P 8100. If the display device is in the illumination area 300-Comfortable illuminance L under lux is 350lux, R is 0.4, PxBrightness corresponding to APL5 (i.e. P)x＝P5) Then, the illuminance of each peak point on the peak brightness control curve may be in turn:
P′1＝(P1/P5)*L＝(255/165)*350；
P′2＝(P2/P5)*L＝(225/165)*350；
P′3＝(P3/P5)*L＝(205/165)*350；
P′4＝(P4/P5)*L＝(185/165)*350；
P′5＝(P5/P5)*L＝(1655/165)*350；
P′6＝(P6/P5)*L＝(145/165)*350；
P′7＝(P7/P5)*L＝(120/165)*350；
P′8＝(P8/P5)*L＝(100/165)*350。
then, according to the preset formula, the brightness of each peak point on the peak brightness control curve may be determined in turn as follows:
P″1＝R*P′1＝(255/165)*350*0.4＝216.4；
P″2＝R*P′2＝(225/165)*350*0.4＝190.9；
P″3＝R*P′3＝(205/165)*350*0.4＝173.9；
P″4＝R*P′4＝(185/165)*350*0.4＝157.0；
P″5＝R*P′5＝(165/165)*350*0.4＝140；
P″6＝R*P′6＝(145/165)*350*0.4＝123.0；
P″7＝R*P′7＝(120/165)*350*0.4＝101.8；
P″8＝R*P′8＝(100/165)*350*0.4＝84.8。
medicine for relaxing muscles and jointsWhen the illuminance L is 350lux, the luminance belongs to the illuminance interval 300-2、190.9cd/m2、173.9cd/m2、157.0cd/m2、140cd/m2、123.0cd/m2、101.8cd/m2And 84.8cd/m2. And determining the corresponding peak brightness control curve according to the brightness of each peak point on the peak brightness control curve.
Similarly, the peak luminance control curves of other illuminance intervals may also be determined according to the same method, for example, the luminance of each peak point on the initial peak luminance control curve may sequentially be: p1＝255，P2＝225，P3＝205，P4＝185，P5＝165，P6＝145，P7＝120，P 8100. If the comfortable illuminance L of the display device is 150lux under the illuminance interval of 100-xBrightness corresponding to APL5 (i.e. P)x＝P5) Then, the illuminance of each peak point on the peak brightness control curve may be in turn:
P′1＝(P1/P5)*L＝(255/165)*150；
P′2＝(P2/P5)*L＝(225/165)*150；
P′3＝(P3/P5)*L＝(205/165)*150；
P′4＝(P4/P5)*L＝(185/165)*150；
P′5＝(P5/P5)*L＝(1655/165)*150；
P′6＝(P6/P5)*L＝(145/165)*150；
P′7＝(P7/P5)*L＝(120/165)*150；
P′8＝(P8/P5)*L＝(100/165)*150。
then, according to the preset formula, the brightness of each peak point on the peak brightness control curve may be determined in turn as follows:
P″1＝R*P′1＝(255/165)*150*0.4＝92.7；
P″2＝R*P′2＝(225/165)*150*0.4＝81.8；
P″3＝R*P′3＝(205/165)*150*0.4＝74.5；
P″4＝R*P′4＝(185/165)*150*0.4＝67.3；
P″5＝R*P′5＝(165/165)*150*0.4＝60；
P″6＝R*P′6＝(145/165)*150*0.4＝52.7；
P″7＝R*P′7＝(120/165)*150*0.4＝43.6；
P″8＝R*P′8＝(100/165)*150*0.4＝36.4。
since the luminance values belong to the luminance range of 100-2、81.8cd/m2、74.5cd/m2、67.3cd/m2、60cd/m2、52.7cd/m2、43.6cd/m2And 36.4cd/m2. And determining the corresponding peak brightness control curve according to the brightness of each peak point on the peak brightness control curve.
Since the comfortable illuminance is different for each illuminance interval, the peak luminance control curves determined for each illuminance interval according to the above method are also different.
The preset formula is only exemplary, and in some embodiments, a person skilled in the art may set the preset formula according to needs, but it should be noted that the preset formula needs to be related to the comfortable illumination intensity of the illumination interval where the display device is currently located.
It should be noted that the comfortable illuminance in each illuminance interval may be preset by a person skilled in the art according to experiments, and the comfortable illuminance is not only the current position of the display deviceThe illumination of the environment is also related to the display size of the display device. For example, in the illumination interval of 50-100lux, if the display of the display device is 65 inches, the comfortable illumination of the display device in the illumination interval of 50-100lux may be 70 lux; if the display of the display device is 55 inches, the comfortable illumination of the display device in the illumination interval of 50-100lux may be 80 lux. Brightness P corresponding to APL with highest bright picture ratio in different display devicesxIt can be different, for example, the APL with the highest bright frame ratio in the OLED TV can be APL5, in this case Px＝P5(ii) a The APL with the highest bright picture ratio in the OLED mobile phone may be APL3, where P is the highestx＝P3。
In some embodiments, the peak brightness control curve includes N peak points, where N ≧ 2. In practice, a person skilled in the art may also configure different numbers of peak points for the peak luminance control curve according to different display devices (such as a television and a mobile phone), and may configure 8 peak points for the peak luminance control curve if the display device is a television; when the display device is a mobile phone, 10 peak points and the like can be configured for the peak brightness control curve. It should be noted that the initial peak brightness control curve of the display device corresponds to the peak point of the peak brightness control curve, that is, the number of the peak points of the initial peak brightness control curve and the peak brightness control curve is the same, and the peak points correspond to one another.
In some embodiments, depending on the environment of the display device, as shown in fig. 8, step S201 may include:
s2011a, if the illuminance is in the first illuminance interval and the first brightness determined according to the preset formula is greater than the second brightness, determining the second brightness as the brightness of the peak brightness control curve corresponding to the first peak point.
The first brightness is the brightness of the peak brightness control curve corresponding to the first peak point, the second brightness is the brightness of the initial brightness control curve corresponding to the first peak point, and the first peak point is any one of the peak points.
S2012a, if the illuminance is in the first illuminance interval and the first brightness determined according to the preset formula is less than or equal to the second brightness, determining the first brightness as the brightness of the peak brightness control curve corresponding to the first peak point.
Specifically, the first peak point here is P mentioned aboveiThe first illumination interval here refers to an illumination interval of the indoor environment, for example, the first illumination interval may be 0 to 350 lux. In this embodiment, the illuminance of the environment where the display device is located is divided into a plurality of illumination intervals, for example, as shown in table 1, the illumination intervals include 0-50lux, 50-100lux, 100-200lux, and the like, and the illumination intervals may determine different peak luminance control curves according to the above preset formula.
In some embodiments, when the luminance of the environment where the display device is located is in the first illuminance interval according to the peak luminance control curve corresponding to each illumination interval, the luminance of each peak point needs to be further determined according to the above steps S2011a and S2012 a.
For example, the brightness of each peak point on the initial peak brightness control curve may be, in order: p1＝255，P2＝225，P3＝205，P4＝185，P5＝165，P6＝145，P7＝120，P 8100. If the comfortable illuminance L of the display device is 350lux under the illuminance interval 300-xBrightness corresponding to APL5 (i.e. P)x＝P5) Then, the determined brightness of each peak point on the peak brightness control curve is sequentially: p ″)1＝216.4，P″2＝190.9，P″3＝173.9，P″4＝157.0，P″5＝140，P″6＝123.0，P″7＝101.8，P″884.8. Since the brightness (first brightness) of each peak point on the peak brightness control curve determined here is less than or equal to the brightness (second brightness) of the corresponding peak point on the initial peak brightness control curve, that is, the first brightness determined according to the preset formula is less than or equal to the second brightness, then these first brightness can be determined as the peak brightnessThe brightness of each peak point on the value brightness control curve. The first peak point here may be a peak point APL1, APL2, APL3, APL4, or the like.
For another example, the brightness of each peak point on the initial peak brightness control curve may be in turn: p1＝255，P2＝225，P3＝205，P4＝185，P5＝165，P6＝145，P7＝120，P 8100. If the comfortable illuminance L of the display device is 350lux under the illuminance interval 300-xBrightness corresponding to APL5 (i.e. P)x＝P5) Then, the brightness of each peak point on the peak brightness control curve may be in turn:
P″1＝(255/165)*350*0.5＝270.5；
P″2＝(225/165)*350*0.5＝238.6；
P″3＝(205/165)*350*0.5＝217.4；
P″4＝(185/165)*350*0.5＝196.2；
P″5＝(165/165)*350*0.5＝175；
P″6＝(145/165)*350*0.5＝153.8；
P″7＝(120/165)*350*0.5＝127.3；
P″8＝(100/165)*350*0.5＝106.1。
since the first illumination interval is 0-350lux and the brightness of each peak point is the brightness of each peak point on the peak brightness control curve corresponding to the illumination interval 300-. The luminance of each peak point on the peak luminance control curve corresponding to the third illuminance interval may be adjusted according to step S2011a, and the second luminance of each peak point is determined as the luminance of the peak point on the peak luminance control curve, i.e., P ″.1＝255，P″′2＝225，P″′3＝205，P″′4＝185，P″′5＝165，P″′6＝145，P″′7＝120，P″′8100, here P'1、P″′2、...、P″′8That is, the finally determined brightness of each peak point on the peak brightness control curve corresponding to the third illumination interval.
In some embodiments, the brightness corresponding to the first peak point may be further determined by:
s2011b, if the illuminance is in the second illuminance interval, determining the first brightness determined according to the preset formula as the brightness of the peak brightness control curve corresponding to the first peak point.
Specifically, the second illumination interval herein refers to an illumination interval of the outdoor environment, for example, the second illumination interval is greater than 350 lux. Since the fourth illumination interval is located in the second illumination interval, the brightness of each peak point on the peak brightness control curve corresponding to the fourth illumination interval can be the actually calculated brightness, i.e. P ″1＝255，P″2＝238.6，P″3＝217.4，P″4＝196.2，P″5＝175，P″6＝153.8，P″7＝127.3，P″8106.1. Since here the maximum brightness of the display device is 255, P ″' will be used here1Is set to 255. Here P ″)1、P″2、...、P″8That is, the finally determined brightness of each peak point on the peak brightness control curve corresponding to the fourth illumination interval is obtained.
S2013, determining a peak brightness control curve according to the brightness corresponding to the first peak point.
Specifically, the first peak point may be any peak point on the peak brightness control curve, so that the brightness of the first peak point is determined according to the above steps, that is, the brightness of any peak point on the peak brightness control curve is determined, and the peak brightness control curve may be determined according to the brightness of the peak points.
Further, the above steps may also determine the brightness of any peak point on the peak brightness control curve corresponding to each illumination interval, and further may determine the peak brightness control curve corresponding to each illumination interval.
The process of determining the peak luminance control curve according to the luminance of each peak point can refer to technical means commonly used in the art, and will not be described herein.
S202, determining an illumination brightness mapping table according to a peak brightness control curve of the display device in each illumination interval.
Specifically, if the illuminance interval is divided into a first illuminance interval, a second illuminance interval, …, and a pth illuminance interval, and the peak points on the peak brightness control curve include APL1, APL2, …, and APL Q, the brightness of each peak point on the peak brightness control curve corresponding to the illuminance intervals can be determined according to the above steps, and then the corresponding peak brightness control curve can be determined according to the brightness of the peak points. P is the division number of the illumination interval, Q is the number of peak points on the peak brightness control curve
And determining an illumination brightness mapping table according to the peak brightness control curves corresponding to the illumination intervals.
For example, the illumination intensity mapping table may be as shown in table 2 below:
TABLE 2
Interval of illumination APL 1 APL 2 APL 3 … APL Q
1 First illumination interval A1 A2 A3 … AQ
2 Second illumination interval B1 B2 B3 … BQ
3 Third illuminance interval C1 C2 C3 … CQ
… … … … … … …
P Interval of P-th illumination … … … … …
And S103, adjusting the brightness of the display device according to the target peak brightness control curve.
Specifically, the target peak luminance control curve is a peak luminance control curve corresponding to the current illuminance of the display device. For example, the illumination brightness mapping table is shown in table 1, and if the current illumination intensity of the display device is 250lux, the target peak brightness control curve corresponding to the display device at this time may be determined as a fourth peak brightness control curve according to the illumination brightness mapping table; if the current illuminance of the display device is 500lux, the target peak brightness control curve corresponding to the display device at this time may be determined to be a fifth peak brightness control curve according to the illumination mapping table.
For example, if the target peak luminance control curve is as shown in fig. 9, when the bright frame occupancy in the display of the display device is 25% APL, the controller adjusts the luminance of the display to the luminance of the peak point APL 1; when the bright picture ratio in the display of the display device is 35% APL, the controller adjusts the brightness of the display to the brightness of the peak APL 2.
In some embodiments, when the ratio of bright frames in the display of the display device is different from the ratio of bright frames corresponding to the respective peak points, the brightness of the display at this time may be adjusted to the brightness corresponding to the peak point with the similar ratio of bright frames. For example, when the ratio of bright frames in the display is 20%, the controller adjusts the brightness of the display to the brightness of the peak point APL 1; when the ratio of the bright picture in the display is 31%, the controller adjusts the brightness of the display to the brightness of the peak point APL 2.
In some embodiments, each peak luminance control curve in the illumination luminance mapping table further includes a luminance threshold, where the luminance threshold refers to a maximum luminance value (e.g., luminance corresponding to the peak point APL 1) and a minimum luminance value (e.g., luminance corresponding to the peak point APL 8) in the peak luminance control curve, and when the controller adjusts the luminance of the display according to the peak luminance control curve, the luminance adjustment range may not exceed the threshold, so as to avoid that the adjusted luminance of the display is too high or too low, which affects user experience.
The display equipment provided by the embodiment of the application can determine the corresponding peak brightness control curve according to the illuminance of the environment where the display equipment is located, so that the brightness display suitable for the illuminance is determined, a comfortable impression can be provided for a user, and the user experience is improved; in addition, in the embodiment, the peak brightness control curve is not only related to the illuminance of the environment where the display device is located, but also related to the brightness corresponding to the APL with the highest picture occupation ratio in the display device, so that the brightness of the display device can be adjusted according to the illuminance, the occupation ratio of the bright picture of the display device can be considered, and the situation that the brightness of the display device is adjusted too high or too low in the same illuminance interval can be avoided, thereby further improving the viewing experience of the user.
An embodiment of the application provides a display device, which comprises a display and a controller.
Wherein the display is configured to: and displaying the picture.
The controller includes a plurality of peak brightness control curves corresponding to a plurality of different light levels.
The controller is configured to: determining the target illumination of the environment where the display device is located; determining a corresponding target peak brightness control curve according to the target illuminance; and adjusting the brightness of the display equipment according to the target peak brightness control curve.
In some embodiments, the controller is further configured to: determining a corresponding target peak brightness control curve according to the target illumination and the illumination brightness mapping table; the illumination brightness mapping table is used for indicating the corresponding relation between the illumination and the peak brightness control curve.
In some embodiments, the illumination intensity mapping table may be determined by: determining a peak brightness control curve of the display device in each illumination interval according to the initial peak brightness control curve and a preset formula; the preset formula is related to the comfortable illuminance of the illuminance interval; and determining an illumination brightness mapping table according to the peak brightness control curve of the display device in each illumination interval. The illumination intensity mapping table may be determined by the controller.
In some embodiments, the peak brightness control curve may be determined by: when the illuminance is in the first illuminance interval, if the first brightness determined according to the preset formula is greater than the second brightness, determining the second brightness as the brightness of the peak brightness control curve corresponding to the first peak point; the first brightness is the brightness of the peak brightness control curve corresponding to the first peak point, and the second brightness is the brightness of the initial brightness control curve corresponding to the first peak point; when the illuminance is in the first illuminance interval, if the first brightness determined according to the preset formula is less than or equal to the second brightness, determining the first brightness as the brightness of the peak brightness control curve corresponding to the first peak point; and determining a peak brightness control curve according to the brightness corresponding to the first peak point.
In some embodiments, the brightness corresponding to the first peak point may also be determined by: and when the illuminance is in the second illuminance interval, determining the first brightness determined according to the preset formula as the brightness of the peak brightness control curve corresponding to the first peak point.
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, it should be understood by those of ordinary skill in the art 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 the modifications or the substitutions do not make the essence of the corresponding technical solutions 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 (10)

1. A display device, comprising:
a display;
a controller comprising a plurality of peak brightness control curves corresponding to a plurality of different light illuminances, the controller configured to:
determining a target illuminance of an environment in which the display device is located;
determining a corresponding target peak brightness control curve according to the target illuminance;
and adjusting the brightness of the display equipment according to the target peak brightness control curve.
2. The display device of claim 1, wherein the controller is further configured to: and determining the corresponding target peak brightness control curve according to the target illumination and an illumination brightness mapping table, wherein the illumination brightness mapping table is used for indicating the corresponding relation between the illumination and the peak brightness control curve.
3. The display device of claim 2, wherein the illumination intensity map is determined by:
determining the peak brightness control curve of the display device in each illumination interval according to an initial peak brightness control curve and a preset formula; the preset formula is related to the comfortable illuminance of the illuminance interval;
and determining the illumination brightness mapping table according to the peak brightness control curve of the display device in each illumination interval.
4. The display device of claim 3, wherein the peak brightness control curve is determined by:
when the illuminance is in a first illuminance interval, if the first brightness determined according to the preset formula is greater than the second brightness, determining the second brightness as the brightness of the peak brightness control curve corresponding to the first peak point; the first brightness is the brightness of the peak brightness control curve corresponding to the first peak point, and the second brightness is the brightness of the initial brightness control curve corresponding to the first peak point;
when the illuminance is in a first illuminance interval, if the first brightness determined according to the preset formula is less than or equal to the second brightness, determining the first brightness as the brightness of the peak brightness control curve corresponding to the first peak point;
and determining the peak brightness control curve according to the brightness corresponding to the first peak point.
5. The display device according to claim 4, wherein the brightness corresponding to the first peak point is further determined by:
and when the illuminance is in a second illuminance interval, determining the first brightness determined according to the preset formula as the brightness of the peak brightness control curve corresponding to the first peak point.
6. A brightness control method is applied to a display device, the display device comprises a controller, the controller comprises a plurality of peak brightness control curves, and the plurality of peak brightness control curves correspond to a plurality of different illumination intensities; the method comprises the following steps:
determining a target illuminance of an environment in which the display device is located;
determining a corresponding target peak brightness control curve according to the target illuminance;
and adjusting the brightness of the display equipment according to the target peak brightness control curve.
7. The luminance control method according to claim 6, wherein the controller determining a corresponding target peak luminance control curve according to the illuminance includes:
determining the corresponding target peak brightness control curve according to the target illumination and an illumination brightness mapping table; the illumination brightness mapping table is used for indicating the corresponding relation between the illumination and the peak brightness control curve.
8. The luminance control method according to claim 7, wherein the illumination luminance mapping table is determined by:
determining the peak brightness control curve of the display device in each illumination interval according to an initial peak brightness control curve and a preset formula; the preset formula is related to the comfortable illuminance of the illuminance interval;
and determining the illumination brightness mapping table according to the peak brightness control curve of the display device in each illumination interval.
9. The method of claim 8, wherein the determining the peak-luminance control curve of the display device at each illumination interval according to the initial peak-luminance control curve and the preset formula comprises:
if the illuminance is in a first illuminance interval and the first brightness determined according to the preset formula is greater than the second brightness, determining the second brightness as the brightness of the peak brightness control curve corresponding to the first peak point; the first brightness is the brightness of the peak brightness control curve corresponding to the first peak point, and the second brightness is the brightness of the initial brightness control curve corresponding to the first peak point;
if the illuminance is in a first illuminance interval and the first brightness determined according to the preset formula is less than or equal to the second brightness, determining the first brightness as the brightness of the peak brightness control curve corresponding to the first peak point;
and determining the peak brightness control curve according to the brightness corresponding to the first peak point.
10. The luminance control method according to claim 9, wherein determining the luminance corresponding to the first peak point further comprises:
and if the illuminance is in a second illuminance interval, determining the first brightness determined according to the preset formula as the brightness of the peak brightness control curve corresponding to the first peak point.
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