CN116416910A - Brightness adjusting method and device of LED display device, display device and system - Google Patents

Brightness adjusting method and device of LED display device, display device and system Download PDF

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Publication number
CN116416910A
CN116416910A CN202111394355.XA CN202111394355A CN116416910A CN 116416910 A CN116416910 A CN 116416910A CN 202111394355 A CN202111394355 A CN 202111394355A CN 116416910 A CN116416910 A CN 116416910A
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brightness
led display
display unit
display device
determining
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Chinese (zh)
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王勇
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Qstech Co Ltd
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Qstech 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]
    • 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

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The invention relates to a brightness adjusting method, a device, a display device and a system of an LED display device, wherein the brightness adjusting method of the LED display device comprises the following steps: acquiring the working time of the LED display unit, and determining a brightness attenuation predicted value of the LED display unit corresponding to the working time according to the working time and a preset brightness-time attenuation curve; acquiring a current brightness parameter value of the LED display unit, and determining a target brightness parameter value according to the current brightness parameter value and a brightness attenuation predicted value; and adjusting the brightness value of the LED display unit to be a target brightness parameter value. According to the brightness adjusting method of the LED display device, the brightness parameters of each LED display unit of the LED display device can be adjusted in real time according to the working time length of the LED display unit, so that the display effect of the LED display device cannot be deteriorated along with the time, and the user experience is improved.

Description

Brightness adjusting method and device of LED display device, display device and system
Technical Field
The present invention relates to the technical field of display devices, and in particular, to a method, an apparatus, a display device, and a system for adjusting brightness of an LED display device.
Background
Generally, an LED (light-emitting diode) display device has a better display effect when shipped from a factory or in an initial use period. However, as the service time is prolonged, there is a different degree of light attenuation for each different color LED bead. After the LED display device is used for a long time, the display effect of the LED display device is poorer and worse due to the light attenuation of each LED lamp bead, and bad experience is brought to a user.
Disclosure of Invention
In order to overcome the problems in the related art, the embodiment of the application provides a brightness adjusting method, a device, a display device and a system of an LED display device, wherein the brightness adjusting method of the LED display device can adjust brightness parameters of the LED display device in real time according to working time of the LED display device, so that display effect of the LED display device cannot be deteriorated along with time, and user experience is improved.
According to a first aspect of embodiments of the present application, there is provided a brightness adjustment method of an LED display device, including the steps of: acquiring the working time of the LED display unit, and determining a brightness attenuation predicted value of the LED display unit corresponding to the working time according to the working time and a preset brightness-time attenuation curve;
acquiring a current brightness parameter value of the LED display unit, and determining a target brightness parameter value according to the current brightness parameter value and a brightness attenuation predicted value;
and adjusting the brightness value of the LED display unit to be a target brightness parameter value.
According to a second aspect of embodiments of the present application, there is provided a brightness adjustment device of an LED display apparatus, including:
the first determining module is used for obtaining the working time of the LED display unit and determining a brightness attenuation predicted value of the LED display unit corresponding to the working time according to the working time and a preset brightness-time attenuation curve;
the second determining module is used for obtaining the current brightness parameter value of the LED display unit and determining a target brightness parameter value according to the current brightness parameter value and the brightness attenuation predicted value;
and the adjusting module is used for adjusting the brightness value of the LED display unit to be a target brightness parameter value.
According to a third aspect of embodiments of the present application, there is provided a display device comprising a processor, a memory, and an LED display screen;
the LED display screen comprises a plurality of LED display units, and the LED display units are combined to form a display picture corresponding to the video source when being lightened;
the memory is electrically connected with the processor and is provided with a plurality of memory cells,
wherein the memory stores a computer program adapted to be loaded by the processor and to perform the method of brightness adjustment of the LED display device according to any of the embodiments above.
According to a fourth aspect of embodiments of the present application, there is provided a brightness adjustment system of an LED display device, including: a luminance detection device and the display device of the above embodiment, the luminance detection device being electrically connected to the display device;
the brightness detection device is used for collecting brightness of each LED display unit of the display device to obtain brightness detection data, and sending the brightness detection data to the display device.
According to a fifth aspect of embodiments of the present application, there is provided a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the brightness adjustment method of any one of the embodiments above.
By applying the technical scheme, the working time of the LED display unit is acquired, the brightness attenuation value is determined by combining the brightness-time attenuation curve, the target brightness parameter value is determined based on the current brightness parameter value and the brightness attenuation value of the LED display unit, and the brightness value of the LED display unit is adjusted to be the target brightness parameter value. When the brightness values of all the LED display units are adjusted to be the target brightness parameter values, the brightness of the LED display units at the initial use stage is recovered, so that the display effect of the LED display device is not deteriorated along with the time, and the user experience is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.
For a better understanding and implementation, the present invention is described in detail below with reference to the drawings.
Drawings
FIG. 1 is a schematic diagram of a brightness adjustment system according to an alternative embodiment of the present invention;
FIG. 2 is a flow chart of a brightness adjustment method according to an alternative embodiment of the invention;
FIG. 3 is a flow chart of a method for obtaining a luminance versus time decay curve according to an alternative embodiment of the present invention;
FIG. 4 is a flow chart of a luminance versus time decay curve fitting method according to an alternative embodiment of the present invention;
FIG. 5 is a schematic diagram of a luminance versus time decay curve according to an alternative embodiment of the present invention;
FIG. 6 is a flow chart of a method for calculating a target brightness parameter value according to an alternative embodiment of the invention;
fig. 7 is a schematic view of a brightness adjusting device according to an alternative embodiment of the present invention;
fig. 8 is a schematic structural view of a display device according to an alternative embodiment of the present invention.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the invention. Rather, they are merely examples of apparatus and methods consistent with aspects of the invention as detailed in the accompanying claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.
It should be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the invention. The word "if"/"if" as used herein may be interpreted as "at … …" or "at … …" or "in response to a determination", depending on the context.
LED display device usually has better display effect when dispatching from the factory, but along with the extension of live time, each different colored LED lamp pearl can exist the light attenuation of different degree, and after using for a longer time, because the light attenuation of each LED lamp pearl can lead to LED display device's display effect to be worse and worse, brings bad experience for the user.
Based on the technical problems, the brightness adjustment method, the device, the display device and the system of the LED display device in the embodiments of the present application are intended to determine a corresponding brightness attenuation predicted value according to a working time length of an LED display unit and a preset brightness-time attenuation curve, and determine a target brightness parameter value according to a current brightness parameter value and the brightness attenuation predicted value of the LED display unit, so as to obtain corresponding target brightness parameter values of each LED display unit of the LED display screen. And then, the brightness parameters of the corresponding LED display units are adjusted according to the target brightness parameter values, so that the display effect of the display equipment cannot be deteriorated along with the time, the display equipment has better display effect in the whole service period, and the user experience is improved.
Referring to fig. 1, fig. 1 is a schematic diagram of a brightness adjusting system according to an alternative embodiment of the invention.
The application environment of the brightness adjusting method of the LED display device is a brightness adjusting system of the LED display device, and the brightness adjusting method of the LED display device can adjust the brightness parameters of the LED display screen of the LED display device in real time according to the working time of the LED display screen, so that the LED display screen can keep a better display effect at any time, and the user experience is improved.
The brightness adjustment system of the LED display device includes: a display device and a brightness detection device.
The display device is an LED display device comprising an LED display screen 100, a display driving device 200 and a memory. Wherein the LED display screen 100 comprises a plurality of LED display units 101; the driving signal output end of the display driving device 200 is connected with the LED display screen 100, and the display driving device 200 is used for driving each LED display unit 101 of the LED display screen 100 to be lightened, and when a plurality of LED display units are lightened and present different colors, the LED display units are combined to form a complete image picture, so that the LED display screen 100 displays picture content corresponding to a video source. The LED display unit 101 may include a single LED lamp bead, or may include a display unit formed by combining a plurality of LED lamp beads, which is not limited in this application.
The display driving device 200 may be a main control device processor of a display device, or may be other controllers capable of controlling display of an LED display screen. The display driving device 200 counts the working time length of each LED display unit 101 when driving each LED display unit 101 of the LED display 100 to light, thereby obtaining the working time length of each LED display unit 101, then determines a luminance attenuation prediction value corresponding to the working time length according to the working time length and a preset luminance-time attenuation curve, obtains the current luminance parameter value of each LED display unit 101, determines a plurality of target luminance parameter values according to the current luminance parameter value and the luminance attenuation prediction value, and adjusts the luminance parameters of the corresponding LED display units 101 according to the plurality of target luminance parameter values, so that the display effect of the LED display device is not deteriorated with the lapse of time, and user experience is improved.
The memory of the display device is used for storing a computer program adapted to be loaded by the processor and to perform the method of brightness adjustment of the LED display device.
The brightness detection device 300 is connected to the display driving device 200 of the display device, and is used for collecting brightness of each LED display unit of the display device to obtain brightness detection data and transmitting the brightness detection data to the display driving device 200 of the display device.
The brightness detection device 300 is disposed towards the LED display screen 100, and is configured to collect and detect the brightness of each LED display unit 101 when the LED display screen 100 is in operation, so as to obtain the actual brightness of each LED display unit 101 of the LED display screen 100 in each working stage, thereby facilitating fitting a brightness-time decay curve with higher accuracy, and improving the accuracy of brightness adjustment of the LED display screen 100.
The brightness detection device 300 may be a conventional brightness detection device, and the brightness detection method may be a detection method carried by the brightness detection device, or other detection methods. In this embodiment, the brightness detection device 300 may be an LED distribution photometer, which can have a better brightness detection effect.
According to a first aspect of embodiments of the present application, a method for adjusting brightness of an LED display device is provided.
The brightness adjustment method of the LED display device of the present invention is described below in connection with various embodiments.
Fig. 2 is a flowchart of a brightness debugging method according to an alternative embodiment of the invention.
A brightness adjustment method of an LED display device, comprising the steps of:
s1: acquiring the working time length of the LED display unit, and determining a brightness attenuation predicted value of the LED display unit corresponding to the working time length according to the working time length and a preset brightness-time attenuation curve.
In this embodiment of the present invention, since the image content corresponding to each LED display unit is different, the lighting duration may be different, that is, the working duration of each LED display unit is different, and finally, the light attenuation of each LED display unit is also different, so that each LED display unit may exhibit different light attenuation curves, and when the brightness parameters of each LED display unit are adjusted, each target brightness parameter value is also different, so as to ensure that the display image of the whole LED display screen can be timely adjusted to an optimal display effect, the brightness attenuation prediction value needs to be determined according to the brightness-time attenuation curve corresponding to each LED display unit, so that the target brightness parameter value is determined to perform real-time adjustment on the brightness parameters of each LED display unit, thereby keeping the display image moment of the LED display screen at the optimal display effect.
In an alternative embodiment, each LED display unit has a corresponding luminance versus time decay curve.
The brightness-time decay curve can be obtained by fitting according to the actually measured brightness data of the LED display screen, so that the brightness-time decay curve which is more consistent with the actual brightness decay of the LED display unit can be obtained. Alternatively, the luminance versus time decay curve may be set by the inventors based on business experience or may be derived from other known materials.
Optionally, if the luminance-time decay curve is obtained by fitting actual measurement luminance data of the LED display screen, the method further includes a step of obtaining the luminance-time decay curve before step S1.
Fig. 3 is a flowchart of a brightness-time decay curve acquisition method according to an alternative embodiment of the invention.
Acquiring a luminance versus time decay curve, comprising:
s11: and acquiring brightness detection data of the LED display unit within a preset time period.
The brightness detection data may be obtained by brightness detection of each LED display unit of the screen of the LED display device by the brightness detection device in a preset period of time, and each LED display unit has corresponding brightness detection data.
The length of the preset time period may be a time period set by the inventor according to service experience. For example, the service life of one LED display unit is 100000 hours, the actually measured brightness of the LED display unit after 100 hours of use may be 98.5-99.5% in the initial state, the actually measured brightness after 300 hours of use may be 97.5-98.5% in the initial state, and the actually measured brightness after 1000 hours of use may be 95.5-96.5% in the initial state. Thus, the preset time period may be 50 hours, 100 hours, or other time value. The longer the duration of the preset time period, the closer the obtained luminance-time decay curve is to the actual light decay degree of the LED display unit.
S12: and determining brightness detection values corresponding to the time nodes according to the brightness detection data.
Because each LED display unit exhibits different light attenuation during the operation process, in order to obtain a more suitable data processing amount and ensure the accuracy of the fitted brightness-time attenuation curve, a time interval needs to be set to obtain a corresponding brightness detection value, and the shorter the time interval is, the more accurate the fitted brightness-time attenuation curve is.
Alternatively, the time interval is any time interval between 10 seconds and 300 seconds.
When the time interval is 10 seconds, the obtained brightness-time decay curve is more consistent with the actual light decay degree due to the shorter time interval. When the time interval is 30 seconds, the fitted brightness-time attenuation curve is more consistent with the actual light attenuation degree at the moment due to the fact that the time interval is more proper, and the brightness parameter adjustment requirement can be met, so that the LED display screen shows better display image quality at all times. When the time interval is 300 seconds, the fitted brightness-time decay curve is basically consistent with the actual light decay degree because of the longer time interval, and the brightness parameter adjustment requirement can be basically met.
In this embodiment, the brightness detection data may be obtained by actually detecting the brightness of the LED display unit by the brightness detection device according to a preset time period, and then dividing the brightness detection data by the display device according to a preset time interval, so as to determine the brightness detection values corresponding to the time nodes.
In an alternative embodiment, the brightness detection data may be obtained by performing actual brightness detection on the LED display unit by the brightness detection device at preset time intervals in a preset time period, and the brightness detection values corresponding to the respective time nodes may be obtained according to the brightness detection data at the time.
S13: determining a plurality of actual brightness attenuation degrees according to the brightness detection values and the initial brightness values of the LED display units; the initial brightness value is the brightness value of the LED display unit in the initial use period.
S14: and determining a brightness-time attenuation curve according to each time node and a plurality of actual brightness attenuations.
And determining a brightness-time decay curve corresponding to the LED display unit so as to predict the decay degree of the LED display unit with the working time length, and adjusting the brightness parameter of the LED display unit to restore the brightness of the LED display unit to an initial state.
The brightness-time decay curve of other LED display units of the LED display screen can be determined by the brightness-time decay curve acquisition method, so that the brightness of the whole LED display screen can be conveniently adjusted.
In an alternative embodiment, as shown in fig. 4, fig. 4 is a flow chart of a brightness-time decay curve fitting method according to an alternative embodiment of the present invention.
Step S14 includes:
s141: and determining the corresponding relation between a plurality of actual brightness attenuations and each time node.
S142: and determining an initial curve according to the corresponding relation.
Optionally, after determining the correspondence between the actual luminance degradation degrees and each time node, a scatter diagram may be generated according to the correspondence, that is, a display diagram of the luminance degradation degrees and the time nodes is formed. Since each sampling point of the scatter diagram regularly presents the brightness attenuation degree of the LED display unit, the initial curve can be obtained more quickly.
S143: and adopting a preset fitting algorithm to fit the initial curve to obtain a brightness-time decay curve.
In this embodiment, the preset fitting algorithm is a least square method, which is a mathematical tool widely used in many data processing disciplines such as error estimation, uncertainty, system identification, prediction, and forecasting. In this embodiment, a least square method is adopted to fit the initial curve to obtain a brightness-time decay curve, so that a relatively accurate curve can be obtained.
In other embodiments, other fitting algorithms may be used to obtain the luminance versus time decay curve, and the invention is not limited thereto.
Referring to fig. 5, fig. 5 is a schematic diagram showing a luminance versus time decay curve according to an alternative embodiment of the present invention.
Fig. 5 shows a schematic diagram of luminance versus time decay curves of several LED display units in an LED display screen.
From fig. 5, three curves can be seen, namely a first curve 501, a second curve 502 and a third curve 503, respectively, where the horizontal axis of the graph where the luminance-time decay curve is located is the working time of the LED display unit, and the vertical axis is the luminance decay rate of the LED display unit, that is, the ratio between the current luminance and the initial luminance.
The first curve 501 is a luminance-time decay curve of a certain red LED display unit, that is, a luminance decay rate-time curve of a certain red LED lamp bead, wherein the actual luminance of the red LED lamp bead is about 97% of the initial state luminance after the red LED lamp bead is operated for 720 hours, and the actual luminance of the red LED lamp bead is lower than about 89% of the initial state luminance after the red LED lamp bead is operated for 6000 hours.
The second curve 502 is a luminance-time decay curve of a certain green LED display unit, that is, a luminance decay rate-time curve of a certain green LED lamp bead, where the actual luminance of the green LED lamp bead is about 98% of the initial state luminance after 720 hours of operation, and the actual luminance of the green LED lamp bead is about 88% of the initial state luminance after 6000 hours of operation.
The third curve 503 is a luminance-time decay curve of a certain blue LED display unit, that is, a luminance decay rate-time curve of a blue LED lamp bead, where the actual luminance of the blue LED lamp bead is about 96% of the initial state luminance after 720 hours of operation, and the actual luminance of the blue LED lamp bead is lower than 88% of the initial state luminance after 6000 hours of operation.
Step S2: and acquiring the current brightness parameter value of the LED display unit, and determining a target brightness parameter value according to the current brightness parameter value and the brightness attenuation predicted value.
Because each LED display unit is matched with the display screen content of the LED display screen, the working time of each LED display unit has a certain deviation, and the use deviation is irregular, the current brightness parameter value of each LED display unit needs to be obtained so as to calculate the target brightness parameter value to properly adjust the brightness parameter of the LED display unit.
In an alternative embodiment, as shown in fig. 6, fig. 6 is a flow chart of a method for calculating a target brightness parameter value according to an alternative embodiment of the present invention.
The step S2 comprises the following steps:
s21: and determining a brightness adjustment factor according to the brightness decay predicted value.
In this embodiment, the inverse of the predicted value of the luminance decay is determined first, and then the inverse is used as the luminance adjustment factor, so that the luminance adjustment factor corresponding to the luminance decay degree of the LED display screen can be obtained.
S22: and acquiring the current brightness parameter value of the LED display unit, and determining a target brightness parameter value according to the current brightness parameter value and the brightness adjustment factor.
The current brightness parameter value is a brightness parameter set value of the LED display unit, the current brightness parameter value and the brightness adjustment factor are subjected to sum operation to determine a target brightness parameter value, and after the target brightness parameter value is determined, the processor can output corresponding signals to control the corresponding LED display unit to perform brightness adjustment, so that the brightness of the corresponding LED display unit is restored to an initial state, the brightness of the whole LED display screen is restored to the initial state, and a good display effect is displayed.
S3: and adjusting the brightness value of the LED display unit to be a target brightness parameter value, so that the brightness of the whole LED display screen is restored to an initial state, and a good display effect is presented.
Because each LED display unit corresponds to a unique target brightness parameter value, when each LED display unit is regulated, the brightness of the whole LED display screen is regulated by properly regulating according to the corresponding target brightness parameter value.
By the brightness adjustment method of the LED display device, through obtaining the working time of the LED display unit, corresponding brightness attenuation predicted values are determined according to the working time and a preset brightness-time attenuation curve corresponding to the LED display unit, and a plurality of target brightness parameter values are determined according to the current brightness parameter values and the brightness attenuation predicted values of the LED display unit, so that the corresponding target brightness parameter values of each LED display unit of the LED display screen can be obtained, brightness parameters of the corresponding LED display unit can be adjusted according to the plurality of target brightness parameter values, the display effect of the LED display device cannot be deteriorated along with the time, namely, the LED display device has better display effect in the whole service period, and user experience is improved.
According to a second aspect of embodiments of the present application, there is provided a brightness adjustment device of an LED display apparatus.
Referring to fig. 7, fig. 7 is a schematic structural diagram of a brightness adjusting device according to an alternative embodiment of the invention.
A brightness adjustment device 700 of an LED display apparatus, comprising:
the first determining module 701 is configured to obtain a working time length of the LED display unit, and determine a brightness attenuation predicted value of the LED display unit corresponding to the working time length according to the working time length and a preset brightness-time attenuation curve;
a second determining module 702, configured to obtain a current brightness parameter value of the LED display unit, and determine a target brightness parameter value according to the current brightness parameter value and the brightness decay predicted value;
the adjusting module 703 is configured to adjust the brightness value of the LED display unit to a target brightness parameter value.
The device can be used for executing the content of the brightness adjusting method of the LED display device in the corresponding embodiment of the application, and has corresponding functions and beneficial effects. For details not disclosed in the embodiments of the brightness adjustment device of the LED display apparatus of the present application, please refer to the content of the brightness adjustment method of the LED display apparatus of the present application.
It should be noted that, in the brightness adjustment device provided in the above embodiment, when the brightness adjustment method of the LED display device is executed, only the division of the above functional modules is used as an example, in practical application, the above functional allocation may be performed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to perform all or part of the functions described above. In addition, the embodiments of the brightness adjustment device and the brightness adjustment method provided in the foregoing embodiments belong to the same concept, and the detailed process is shown in the embodiments, which are not repeated here.
According to a third aspect of the embodiments of the present application, referring to fig. 8, fig. 8 is a schematic structural diagram of a display device according to an alternative embodiment of the present invention.
The display device includes at least one processor 810, at least one network interface 820, a user interface 830, a memory 840, at least one communication bus 850, and an LED display. Wherein a communication bus 850 is used to enable connected communications between these components.
The user interface 830 may include an interface for interfacing with external components, and the optional user interface 830 may also include a standard wired interface, a wireless interface.
Network interface 820 may optionally include a standard wired interface, a wireless interface (e.g., a WIFI interface), among others.
Wherein processor 810 may include one or more processing cores. Processor 810 connects the various parts within the overall smart device 800 using various interfaces and lines, performing various functions of the debug device 800 and processing data by executing or executing instructions, programs, code sets, or instruction sets stored within the processor 810, and invoking data stored within memory 840. Alternatively, the processor 810 may be implemented in hardware in at least one of digital signal processing (Digital Signal Processing, DSP), field programmable gate array (Field-Programmable Gate Array, FPGA), programmable logic array (Programmable logic arrays, PLA). The processor 810 may integrate one or a combination of several of a central processing unit (Central Processing Unit, CPU), an image processor (Graphics Processing Unit, GPU), and a modem, etc. The CPU mainly processes an operating system, a user interface, an application program and the like; the GPU is used for rendering and drawing the content required to be displayed by the display screen; the modem is used to handle wireless communications. It will be appreciated that the modem may not be integrated into the processor 810 and may be implemented on a single chip.
The Memory 840 may include a random access Memory (Random Access Memory, RAM) or a Read-Only Memory (Read-Only Memory). Optionally, the memory 840 includes a non-transitory computer readable storage medium (non-transitory computer-readable storage medium). Memory 840 may be used to store instructions, programs, code sets, or instruction sets. The memory 840 may include a stored program area and a stored data area, wherein the stored program area may store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playing function, an image playing function, etc.), instructions for implementing the various method embodiments described above, etc.; the storage data area may store data or the like referred to in the above respective method embodiments. Memory 840 may also optionally be at least one storage device located remotely from the aforementioned processor 810. As shown in fig. 8, an operating system, a network communication module, a user interface module, and an operating application of the smart device may be included in the memory 840, which is one type of computer-readable storage medium.
The processor 810 may be used to invoke the operating application of the smart device stored in the memory 840 and perform the relevant operations in the brightness adjustment method of the LED display device in the above-described embodiments.
The LED display screen comprises a plurality of LED display units, and the LED display units are combined to form a display picture corresponding to the video source when being lightened.
The display device can be used for executing the content of the brightness adjusting method of the LED display device in the corresponding embodiment of the application, and has corresponding functions and beneficial effects.
According to a fourth aspect of embodiments of the present application, there is provided a brightness adjustment system of an LED display device.
As shown in fig. 1, a brightness adjustment system of an LED display device includes: the luminance detection apparatus 300 and the display apparatus of the above embodiment.
The detection signal output end of the brightness detection device 300 is connected with the processor 200 of the display device, namely, the signal input end of the display driving device 200, the brightness detection device 300 is arranged towards the LED display screen 100 of the display device, brightness of each LED display unit 101 of the LED display screen 100 is collected to obtain brightness detection data, and the brightness detection data are transmitted to the display driving device 200.
The display driving apparatus 200 receives the luminance detection data, determines a plurality of actual luminance attenuations by comparing the plurality of luminance detection data with the initial luminance value, and fits a luminance-time attenuation curve corresponding to each LED display unit 101 according to each time node and the plurality of actual luminance attenuations.
When the display driving device 200 drives each LED display unit 101 to be turned on, the working time length of each LED display unit 101 is obtained, and according to the working time length and the brightness-time attenuation curve corresponding to each LED display unit 101, the brightness attenuation predicted value corresponding to the working time length of each LED display unit 101 is determined; acquiring current brightness parameter values of each LED display unit 101, and determining a plurality of target brightness parameter values according to each current brightness parameter value and a brightness attenuation predicted value; the brightness parameters of the corresponding LED display units 101 are adjusted according to the several target brightness parameter values.
In an alternative embodiment, the brightness detection device 300 is an LED distribution photometer, and in other embodiments, the brightness detection device 300 may be another device capable of realizing brightness detection.
By applying the technical scheme, the working time of the LED display unit is acquired, the brightness attenuation value is determined by combining the brightness-time attenuation curve, the target brightness parameter value is determined based on the current brightness parameter value and the brightness attenuation value of the LED display unit, and the brightness value of the LED display unit is adjusted to be the target brightness parameter value. When the brightness values of all the LED display units are adjusted to be the target brightness parameter values, the brightness of the LED display units at the initial use stage is recovered, so that the display effect of the LED display device is not deteriorated along with the time, and the user experience is improved.
According to a fifth aspect of embodiments of the present application, there is provided a computer-readable storage medium, on which a computer program is stored, the computer program being adapted to be loaded by the processor and to perform the relevant operations in the method for brightness adjustment of an LED display device as described in the above embodiments, and having corresponding functions and advantageous effects.
Where computer-readable storage media includes both non-transitory and non-transitory, removable and non-removable media, information storage may be implemented by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer-readable storage media include, but are not limited to, phase-change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Disks (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer-readable storage media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises an element.
Note that the above is only a preferred embodiment of the present application and the technical principle applied. Those skilled in the art will appreciate that the present application is not limited to the particular embodiments described herein, but is capable of numerous obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the present application. Therefore, while the present application has been described in connection with the above embodiments, the present application is not limited to the above embodiments, but may include many other equivalent embodiments without departing from the spirit of the present application, the scope of which is defined by the scope of the appended claims.

Claims (10)

1. A brightness adjustment method of an LED display device, comprising the steps of:
acquiring the working time length of an LED display unit, and determining a brightness attenuation predicted value of the LED display unit corresponding to the working time length according to the working time length and a preset brightness-time attenuation curve;
acquiring a current brightness parameter value of the LED display unit, and determining a target brightness parameter value according to the current brightness parameter value and the brightness attenuation predicted value;
and adjusting the brightness value of the LED display unit to be the target brightness parameter value.
2. The method for adjusting brightness of an LED display device according to claim 1, wherein the step of obtaining the operating time of the LED display unit and determining the predicted value of brightness decay corresponding to the operating time of the LED display unit according to the operating time and a preset brightness-time decay curve, further comprises the steps of:
the luminance versus time decay curve is obtained.
3. The method of claim 2, wherein the acquiring the luminance-time decay curve comprises:
acquiring brightness detection data of the LED display unit within a preset time period;
determining brightness detection values corresponding to the time nodes according to the brightness detection data;
determining a plurality of actual brightness attenuation degrees according to the brightness detection values and the initial brightness values of the LED display units; wherein the initial brightness value is a brightness value of the LED display unit at the initial use stage;
and determining the brightness-time attenuation curve according to each time node and a plurality of actual brightness attenuations.
4. A method of adjusting the brightness of an LED display device according to claim 3, wherein said determining said brightness-time decay curve based on each time node and a number of said actual brightness decays comprises:
determining the corresponding relation between a plurality of actual brightness attenuation degrees and each time node;
determining an initial curve according to the corresponding relation;
and adopting a preset fitting algorithm to fit the initial curve to obtain a brightness-time decay curve.
5. The method of adjusting luminance of an LED display device according to any one of claims 1 to 4, wherein the obtaining a current luminance parameter value of an LED display unit and determining a target luminance parameter value from the current luminance parameter value and the luminance decay prediction value includes:
determining a brightness adjustment factor according to the brightness decay predicted value;
and acquiring a current brightness parameter value of the LED display unit, and determining a target brightness parameter value according to the current brightness parameter value and the brightness adjustment factor.
6. The method of claim 5, wherein determining a brightness adjustment factor based on the brightness decay prediction value comprises:
determining the reciprocal of the brightness decay predicted value, and taking the reciprocal as the brightness adjusting factor.
7. A brightness adjustment device for an LED display apparatus, comprising:
the first determining module is used for obtaining the working time length of the LED display unit and determining a brightness attenuation predicted value of the LED display unit corresponding to the working time length according to the working time length and a preset brightness-time attenuation curve;
the second determining module is used for obtaining the current brightness parameter value of the LED display unit and determining a target brightness parameter value according to the current brightness parameter value and the brightness attenuation predicted value;
and the adjusting module is used for adjusting the brightness value of the LED display unit to be the target brightness parameter value.
8. A display device comprising a processor, a memory, and an LED display screen;
the LED display screen comprises a plurality of LED display units, and the LED display units are combined to form a display picture corresponding to the video source when being lightened;
the memory is electrically connected to the processor,
wherein the memory stores a computer program adapted to be loaded by the processor and to perform the method of brightness adjustment of an LED display device according to any one of claims 1 to 6.
9. A brightness adjustment system for an LED display device, comprising: a luminance detection device and the display device according to claim 8, the display device being electrically connected to the luminance detection device;
the brightness detection device is used for collecting brightness of each LED display unit of the display device, obtaining brightness detection data and sending the brightness detection data to the display device.
10. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program is adapted to be loaded by the processor and to perform the method of brightness adjustment of an LED display device according to any one of claims 1 to 6.
CN202111394355.XA 2021-11-23 2021-11-23 Brightness adjusting method and device of LED display device, display device and system Pending CN116416910A (en)

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Application Number Priority Date Filing Date Title
CN202111394355.XA CN116416910A (en) 2021-11-23 2021-11-23 Brightness adjusting method and device of LED display device, display device and system

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