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CN108053804B - Configuration method and device for power supply current of display terminal and readable storage medium - Google Patents

Configuration method and device for power supply current of display terminal and readable storage medium Download PDF

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CN108053804B
CN108053804B CN201711498641.4A CN201711498641A CN108053804B CN 108053804 B CN108053804 B CN 108053804B CN 201711498641 A CN201711498641 A CN 201711498641A CN 108053804 B CN108053804 B CN 108053804B
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brightness
current
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threshold
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CN108053804A (en
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何文辉
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Shenzhen TCL New Technology Co Ltd
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Shenzhen TCL New 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
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/10—Intensity circuits

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Abstract

The invention discloses a configuration method of power supply current of a display terminal, wherein the display terminal comprises more than one power supply, the display terminal is provided with more than two backlight areas, and the configuration method of the power supply current of the display terminal comprises the following steps: detecting the brightness of each backlight area of the display terminal; obtaining brightness related data based on the brightness of each backlight area, wherein the brightness related data comprises average brightness and maximum brightness difference; and configuring the supply current based on the average brightness and the maximum brightness difference. The invention also discloses a configuration device of the power supply current of the display terminal and a computer readable storage medium. The invention achieves the effects of not overloading the power supply and avoiding the dark brightness of the screen.

Description

Configuration method and device for power supply current of display terminal and readable storage medium
Technical Field
The invention relates to the technical field of terminals, in particular to a configuration method and device for power supply current of a display terminal and a readable storage medium.
Background
As a large screen is widely applied to terminals such as televisions, a trend of multi-power supply partition power supply is provided, and each power supply supplies power to a part of a large screen backlight area. In this power supply mode, when the luminance of different backlight areas is different, that is, there is a luminance difference in each backlight area, the load of one or more power supplies is light, and in addition, the power supply is overloaded, which may cause power supply overload protection or even burn out the power supply in case of serious. In order to avoid the power overload, the power supply current of the power supply can be limited, but at the same time, the problem that the screen brightness is dark and the standard brightness cannot be achieved is caused. Therefore, the terminal has a problem that the power load and the screen brightness cannot be simultaneously achieved.
Disclosure of Invention
The invention mainly aims to provide a configuration method and device for power supply current of a display terminal and a readable storage medium, and aims to solve the technical problem that in the prior art, a terminal cannot give consideration to both power supply load and screen brightness.
In order to achieve the above object, the present invention provides a method for configuring a supply current of a display terminal, where the display terminal includes more than one power supply, the display terminal is provided with more than two backlight areas, and the method for configuring the supply current of the display terminal includes the following steps:
detecting the brightness of each backlight area of the display terminal;
obtaining brightness related data based on the brightness of each backlight area, wherein the brightness related data comprises average brightness and maximum brightness difference;
and configuring the supply current based on the average brightness and the maximum brightness difference.
Preferably, the configuring of the supply current based on the average brightness and the maximum brightness difference includes:
calculating the average brightness of the display terminal and the maximum brightness difference between backlight areas according to the brightness of each backlight area; obtaining theoretical current according to the average brightness, the maximum brightness difference and a preset corresponding relation between the brightness and the current;
and configuring the supply current based on the theoretical current.
Preferably, the step of obtaining a theoretical current according to the average brightness, the maximum brightness difference, and a preset correspondence between brightness and current includes:
calculating a first current corresponding to the average brightness according to the average brightness and a preset corresponding relation between the brightness and a standard current;
calculating a second current corresponding to the average brightness according to the average brightness and a preset corresponding relation between the brightness and the multiple power supply currents;
and calculating theoretical currents corresponding to the average brightness and the maximum brightness difference according to the first current, the second current and the maximum brightness difference.
Preferably, the step of calculating the theoretical current corresponding to the average brightness and the maximum brightness difference according to the first current, the second current and the maximum brightness difference comprises:
by using a predetermined formula I ═ Ia*(K–ΔAPL)+IbΔ AP L, calculating a theoretical current corresponding to the average brightness and the maximum brightness difference;
wherein I is the calculated theoretical current, IaIs the first current, IbFor the second current, K is a preset brightness threshold, and Δ AP L is the maximum brightness difference.
Preferably, the step of calculating a first current corresponding to the average brightness according to the average brightness and a preset correspondence between the brightness and a standard current includes:
when the average brightness is smaller than a preset first minimum brightness threshold value, determining a preset maximum current threshold value as the first current;
when the average brightness is greater than or equal to the first lowest brightness threshold and less than a preset first middle brightness threshold, according to a preset formula
Ia＝Imax–(Imax–Imida)*(APLp-APLlowa)/(APLmida-APLlowa) Calculating the first current;
when the average brightness is greater than or equal to the first intermediate brightness threshold and less than or equal to a preset maximum brightness threshold, according to a preset formula
Ia＝Imida–(Imida–Ilow)*(APLp-APLmida)/(APLmax-APLmida) Calculating the first current;
wherein, AP LpFor the average luminance, AP LlowaIs the first minimum brightness threshold, AP LmidaFor the first intermediate brightness threshold, AP LmaxIs the maximum brightness threshold value, ImaxIs the maximum current threshold value, ImidaIs a preset first intermediate current threshold, IlowIs a preset minimum current threshold.
Preferably, the step of calculating a second current corresponding to the average brightness according to the average brightness and a preset correspondence between the brightness and the multiple power supply currents includes:
when the average brightness is smaller than a preset second lowest brightness threshold value, determining a preset maximum current threshold value as the second current;
when the average brightness is greater than or equal to the second lowest brightness threshold and less than a preset second middle brightness threshold, according to a preset formula
Ib＝Imax–(Imax–Imidb)*(APLp-APLlowb)/(APLmidb-APLlowb) Calculating the second current;
when the average brightness is greater than or equal to the second intermediate brightness threshold and less than or equal to a preset maximum brightness threshold, according to a preset formula
Ib＝Imidb–(Imidb–Ilow)*(APLp-APLmidb)/(APLmax-APLmidb) Calculating the second current;
wherein, AP LpFor the average luminance, AP LlowbThe second minimum brightness threshold, AP LmidbFor the second intermediate brightness threshold, AP LmaxIs the maximum brightness threshold value, ImaxIs the maximum current threshold value, ImidbIs a preset second intermediate current threshold, IlowIs a preset minimum current threshold.
Preferably, one of the power supplies corresponds to one of the backlight regions and supplies power to the corresponding backlight region.
Preferably, the number of the power sources is one, and the power sources supply power to the more than two backlight areas.
In addition, in order to achieve the above object, the present invention further provides a device for configuring a supply current of a display terminal, including: the display terminal comprises a memory, a processor and a power supply current configuration program stored on the memory and capable of running on the processor, wherein the power supply current configuration program realizes the steps of the configuration method of the power supply current of the display terminal when being executed by the processor.
Furthermore, to achieve the above object, the present invention further provides a computer-readable storage medium, having a power supply current configuration program stored thereon, which when executed by a processor implements the steps of the configuration method of the power supply current of the display terminal as described above.
According to the scheme provided by the invention, the brightness of each backlight area of the display terminal is detected, the brightness related data is obtained based on the brightness of each backlight area, the brightness related data comprises average brightness and maximum brightness difference, and the power supply current is configured based on the average brightness and the maximum brightness difference, so that the power supply of the display terminal is realized to supply power to the backlight area by the configured power supply current. The configured supply current is determined according to the average brightness and the maximum brightness difference, namely, the overall brightness condition of the screen and the brightness difference condition of the bright and dark areas are considered, so that the supply current is not excessive to cause the overload of a power supply, and is not too small to cause the dark brightness of the screen. Therefore, the effects of not overloading the power supply and avoiding the dark brightness of the screen are achieved.
Drawings
Fig. 1 is a schematic structural diagram of a hardware operating environment of a display terminal according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating a first embodiment of a method for configuring a supply current of a display terminal according to the present invention;
FIG. 3 is a graph illustrating an alternative luminance versus standard current according to an embodiment of the present invention;
FIG. 4 is a graph illustrating an alternative luminance versus multiple power supply currents according to an embodiment of the present invention;
fig. 5 is a graph illustrating an alternative luminance versus balanced supply current according to an embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The solution of the embodiment of the invention is mainly as follows: the method comprises the steps of detecting the brightness of each backlight area of the display terminal, obtaining brightness related data based on the brightness of each backlight area, wherein the brightness related data comprise average brightness and maximum brightness difference, and configuring power supply current based on the average brightness and the maximum brightness difference, so that the power supply of the display terminal supplies power to the backlight area with the configured power supply current. By the technical scheme of the embodiment of the invention, the problem that the terminal cannot give consideration to both power supply load and screen brightness is solved.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a hardware operating environment of a display terminal according to an embodiment of the present invention.
In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in itself. Thus, "module", "component" or "unit" may be used mixedly.
As shown in fig. 1, the display terminal may include: a processor 1001, a communication bus 1002, a user interface 1003, a network interface 1004, a memory 1005, one or more power supplies (not shown), two or more backlight areas (not shown). The display terminal comprises a power supply, a display screen and a display screen, wherein the power supply is used for supplying power to more than two backlight areas of the display terminal; or, the display terminal comprises a plurality of power supplies, one power supply corresponds to one backlight area, and each power supply supplies power to the corresponding backlight area. A communication bus 1002 is used to enable connection communications between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the display terminal configuration shown in fig. 1 is not intended to be limiting of display terminals and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a kind of computer storage medium, may include therein an operating system, a network communication module, a user interface module, and a power supply current configuration program.
The processor 1001 and the memory 1005 in the display terminal of the present invention may be provided in a configuration device of the power supply current of the display terminal, which calls the power supply current configuration program stored in the memory 1005 through the processor 1001 and performs the following operations:
detecting the brightness of each backlight area of the display terminal;
obtaining brightness related data based on the brightness of each backlight area, wherein the brightness related data comprises average brightness and maximum brightness difference;
and configuring the supply current based on the average brightness and the maximum brightness difference.
Further, the processor 1001 may call a supply current configuration program stored in the memory 1005, and also perform the following operations:
calculating the average brightness of the display terminal and the maximum brightness difference between backlight areas according to the brightness of each backlight area; obtaining theoretical current according to the average brightness, the maximum brightness difference and a preset corresponding relation between the brightness and the current;
and configuring the supply current based on the theoretical current.
Further, the processor 1001 may call a supply current configuration program stored in the memory 1005, and also perform the following operations:
calculating a first current corresponding to the average brightness according to the average brightness and a preset corresponding relation between the brightness and a standard current;
calculating a second current corresponding to the average brightness according to the average brightness and a preset corresponding relation between the brightness and the multiple power supply currents;
and calculating theoretical currents corresponding to the average brightness and the maximum brightness difference according to the first current, the second current and the maximum brightness difference.
Further, the processor 1001 may call a supply current configuration program stored in the memory 1005, and also perform the following operations:
by using a predetermined formula I ═ Ia*(K–ΔAPL)+Ib*ΔAPLCalculating theoretical current corresponding to the average brightness and the maximum brightness difference;
wherein I is the calculated theoretical current, IaIs the first current, IbFor the second current, K is a preset brightness threshold, and Δ AP L is the maximum brightness difference.
Further, the processor 1001 may call a supply current configuration program stored in the memory 1005, and also perform the following operations:
when the average brightness is smaller than a preset first minimum brightness threshold value, determining a preset maximum current threshold value as the first current;
when the average brightness is greater than or equal to the first lowest brightness threshold and less than a preset first middle brightness threshold, according to a preset formula
Ia＝Imax–(Imax–Imida)*(APLp-APLlowa)/(APLmida-APLlowa) Calculating the first current;
when the average brightness is greater than or equal to the first intermediate brightness threshold and less than or equal to a preset maximum brightness threshold, according to a preset formula
Ia＝Imida–(Imida–Ilow)*(APLp-APLmida)/(APLmax-APLmida) Calculating the first current;
wherein, AP LpFor the average luminance, AP LlowaIs the first minimum brightness threshold, AP LmidaFor the first intermediate brightness threshold, AP LmaxIs the maximum brightness threshold value, ImaxIs the maximum current threshold value, ImidaIs a preset first intermediate current threshold, IlowIs a preset minimum current threshold.
Further, the processor 1001 may call a supply current configuration program stored in the memory 1005, and also perform the following operations:
when the average brightness is smaller than a preset second lowest brightness threshold value, determining a preset maximum current threshold value as the second current;
when the average brightness is greater than or equal to the second lowest brightness threshold and less than a preset second middle brightness threshold, according to a preset formula
Ib＝Imax–(Imax–Imidb)*(APLp-APLlowb)/(APLmidb-APLlowb) Calculating the second current;
when the average brightness is greater than or equal to the second intermediate brightness threshold and less than or equal to a preset maximum brightness threshold, according to a preset formula
Ib＝Imidb–(Imidb–Ilow)*(APLp-APLmidb)/(APLmax-APLmidb) Calculating the second current;
wherein, AP LpFor the average luminance, AP LlowbThe second minimum brightness threshold, AP LmidbFor the second intermediate brightness threshold, AP LmaxIs the maximum brightness threshold value, ImaxIs the maximum current threshold value, ImidbIs a preset second intermediate current threshold, IlowIs a preset minimum current threshold.
According to the scheme, the display terminal power supply supplies power to the backlight area with the configured supply current by detecting the brightness of each backlight area of the display terminal, obtaining brightness related data based on the brightness of each backlight area, wherein the brightness related data comprises the average brightness and the maximum brightness difference, and configuring the supply current based on the average brightness and the maximum brightness difference. The configured supply current is determined according to the average brightness and the maximum brightness difference, namely, the overall brightness condition of the screen and the brightness difference condition of the bright and dark areas are considered, so that the supply current is not excessive to cause the overload of a power supply, and is not too small to cause the dark brightness of the screen. Therefore, the effects of not overloading the power supply and avoiding the dark brightness of the screen are achieved.
Based on the hardware structure, the embodiment of the configuration method for the power supply current of the display terminal is provided.
Referring to fig. 2, fig. 2 is a flowchart illustrating a configuration method of a power supply current of a display terminal according to a first embodiment of the present invention.
In a first embodiment, the method for configuring the power supply current of the display terminal includes the following steps:
step S10, detecting the brightness of each backlight area of the display terminal;
step S20, obtaining brightness related data based on the brightness of each backlight area, where the brightness related data includes an average brightness and a maximum brightness difference;
in step S30, a supply current is configured based on the average brightness and the maximum brightness difference.
In this embodiment, the display terminal includes, but is not limited to, a television, a computer, or the like having a large screen, the display terminal includes one or more power supplies, and the display terminal is provided with two or more backlight areas. The display terminal comprises a power supply, a display screen and a display screen, wherein the power supply is used for supplying power to more than two backlight areas of the display terminal; or, the display terminal includes a plurality of power supplies, one power supply corresponds to one backlight area, and each power supply supplies power to the corresponding backlight area, that is, the display terminal supplies power in a partitioned manner. For example, suppose that a display terminal screen corresponds to a backlight area 1, a backlight area 2, a backlight area 3, a backlight area 4, a backlight area 5 and a backlight area 6, the display terminal comprises a power supply 1, a power supply 2 and a power supply 3, the power supply 1 is adopted by the display terminal to supply power to the backlight area 1 and the backlight area 2, the power supply 2 is adopted to supply power to the backlight area 3 and the backlight area 4, and the power supply 3 is adopted to supply power to the backlight area 5 and the backlight area 6.
In order to ensure that the power supply of the display terminal is not overloaded and that the display terminal screen is not dark, a proper supply current needs to be configured for the power supply of the display terminal, and the configuration of the supply current is described in detail below.
Specifically, the display terminal first detects the current brightness of each backlight area, for example, if the display terminal screen has n corresponding backlight areas, the display terminal detects that the current brightness of the n backlight areas is AP L respectively1、APL2、APL3、……、APLn。
After detecting the current brightness of each backlight area, the display terminal obtains corresponding brightness associated data according to the brightness of each backlight area. The brightness-related data includes an average brightness and a maximum brightness difference. After obtaining the brightness-related data, the display terminal performs configuration of the supply current based on the obtained average brightness and the maximum brightness difference.
Optionally, the step S30 includes:
step a, calculating the average brightness of the display terminal and the maximum brightness difference between backlight areas according to the brightness of each backlight area; obtaining theoretical current according to the average brightness, the maximum brightness difference and a preset corresponding relation between the brightness and the current;
and b, configuring the power supply current based on the theoretical current.
Again taking the above-listed example as an example, assume that the current brightness of each of the n backlight regions is AP L1、APL2、APL3、……APLnThen calculate the average brightness AP L corresponding to the current brightness of the n backlight areaspComprises the following steps:
APLp＝(APL1+APL2+APL3+……+APLn)/n；
at the same time, the n luminances AP L are respectively determined1、APL2、APL3、……APLnHighest brightness AP L in (1)a＝MAX(APLi) I 1, 2, … … n, and minimum brightness AP Lb＝MIN(APLj) J 1, 2, … … n, according to the determined maximum brightness AP LaAnd minimum brightness AP LbThe maximum luminance difference Δ AP L between the backlight areas is calculated as:
ΔAPL＝APLa-APLb。
in this embodiment, a corresponding relationship between the brightness and the current is also preset, and optionally, the corresponding relationship between the brightness and the current is setThe average brightness AP L corresponding to each backlight region is obtained by calculationpAnd the maximum brightness difference Δ AP L, according to the average brightness AP LpAnd the maximum brightness difference delta AP L, and obtaining the corresponding theoretical current I, for example, firstly, according to the corresponding relation between the average brightness and the current, determining the average brightness AP L corresponding to each backlight area obtained by calculationpAnd calculating theoretical current I corresponding to the maximum brightness difference delta AP L according to the determined undetermined current and the corresponding relation between the maximum brightness difference and the current, wherein after the theoretical current I is calculated, the display terminal configures power supply current according to the theoretical current I.
The theoretical current I is the average brightness AP L corresponding to each backlight areapAnd the maximum brightness difference Δ AP L, that is, the overall brightness of the screen and the brightness difference between the bright and dark areas are also referred to, so that the configured supply current is not too large to cause the overload of the power supply, nor too small to cause the dark brightness of the screen.
After the theoretical current I is calculated, the display terminal configures a power supply current according to the theoretical current I, so that the driving power supply supplies power to the backlight area at the theoretical current I.
Optionally, in the process of using the display terminal, the brightness of each backlight area of the screen of the display terminal is likely to change continuously, so further, a corresponding detection period is preset, the display terminal detects the brightness of each backlight area of the display terminal at regular time according to the preset detection period, and calculates and obtains a corresponding newly matched theoretical current I according to the currently detected latest backlight area brightness, so as to configure the power supply current according to the new theoretical current I, that is, continuously update and configure the power supply current, thereby ensuring that the power supply current is not too large to cause overload of the power supply, and not too small to cause dark screen brightness, and further improving user experience.
In the scheme provided by this embodiment, the power supply of the display terminal is implemented by detecting the brightness of each backlight area of the display terminal, obtaining brightness-related data based on the brightness of each backlight area, where the brightness-related data includes an average brightness and a maximum brightness difference, and configuring the power supply current based on the average brightness and the maximum brightness difference, so as to supply power to the backlight area with the configured power supply current. The configured supply current is determined according to the average brightness and the maximum brightness difference, namely, the overall brightness condition of the screen and the brightness difference condition of the bright and dark areas are considered, so that the supply current is not excessive to cause the overload of a power supply, and is not too small to cause the dark brightness of the screen. Therefore, the effects of not overloading the power supply and avoiding the dark brightness of the screen are achieved.
Further, a second embodiment of the configuration method for a power supply current of a display terminal according to the present invention is provided based on the first embodiment, and in this embodiment, the step a includes:
step A, calculating a first current corresponding to the average brightness according to the average brightness and a corresponding relation between preset brightness and standard current;
b, calculating a second current corresponding to the average brightness according to the average brightness and a corresponding relation between preset brightness and multiple power supply currents;
and C, calculating theoretical currents corresponding to the average brightness and the maximum brightness difference according to the first current, the second current and the maximum brightness difference.
In this embodiment, a corresponding relationship between the luminance and the standard current is preset, for example, as shown in fig. 3, a corresponding relationship curve diagram between the luminance and the standard current is established; and presetting the corresponding relation between the brightness and the multiple power supply currents, for example, as shown in fig. 4, establishing a corresponding graph of the relation between the brightness and the multiple power supply currents. After the average brightness and the maximum brightness difference corresponding to each backlight area are obtained through calculation, the display terminal calculates a first current corresponding to the average brightness according to the obtained average brightness and based on the corresponding relation between the preset brightness and the standard current. And calculating a second current corresponding to the average brightness based on a preset corresponding relation between the brightness and the multiple power supply currents according to the obtained average brightness.
After the first current and the second current are obtained through calculation, the display terminal calculates theoretical currents corresponding to the average brightness and the maximum brightness difference according to the maximum brightness difference between the backlight areas and the first current and the second current. Optionally, the step C includes:
step C1, using preset formula I ═ Ia*(K–ΔAPL)+IbΔ AP L, calculating a theoretical current corresponding to the average brightness and the maximum brightness difference;
wherein I is the calculated theoretical current, IaIs the first current, IbFor the second current, K is a preset brightness threshold, and Δ AP L is the maximum brightness difference.
Alternatively, in order to configure a suitable supply current, a corresponding formula for calculating the current magnitude is preset: i ═ Ia*(K–ΔAPL)+IbΔ AP L, where I is the theoretical current to be calculated, IaIs a calculated first current, IbIn order to calculate the second current, Δ AP L is the maximum luminance difference between the backlight regions, and K is a preset luminance threshold value.
When the first current I is obtained by calculationaAnd a second current IbThen, the display terminal calculates the first current I according to the maximum brightness difference Δ AP L between the backlight areasaAnd a second current IbUsing the above formula I ═ Ia*(K–ΔAPL)+IbΔ AP L calculates a corresponding theoretical current I, and configures a power supply current according to the theoretical current I, thereby controlling the power supply to supply the backlight area with the current I.
Adopting the above calculation formula I ═ Ia*(K–ΔAPL)+IbWhen calculating the theoretical current I by delta AP L, the larger the maximum brightness difference delta AP L is, the closer the theoretical current I is to the second current IbConversely, the smaller the maximum brightness difference Δ AP L, the closer the theoretical current I is to the first current Ia。
Optionally, the step a includes:
step a1, when the average brightness is smaller than a preset first minimum brightness threshold, determining a preset maximum current threshold as the first current;
step A2, when the average brightness is greater than or equal to the first lowest brightness threshold and less than a preset first middle brightness threshold, according to a preset formula
Ia＝Imax–(Imax–Imida)*(APLp-APLlowa)/(APLmida-APLlowa) Calculating the first current;
step A3, when the average brightness is greater than or equal to the first intermediate brightness threshold and less than or equal to the preset maximum brightness threshold, according to a preset formula
Ia＝Imida–(Imida–Ilow)*(APLp-APLmida)/(APLmax-APLmida) Calculating the first current;
wherein, AP LpFor the average luminance, AP LlowaIs the first minimum brightness threshold, AP LmidaFor the first intermediate brightness threshold, AP LmaxIs the maximum brightness threshold value, ImaxIs the maximum current threshold value, ImidaIs a preset first intermediate current threshold, IlowIs a preset minimum current threshold.
Alternatively, if the correspondence relationship between the preset luminance and the standard current is as shown in fig. 3, in the figure, the abscissa represents the average luminance AP LpMagnitude, ordinate, representing the corresponding first current IaSize, wherein the average luminance AP LpThere is a corresponding maximum brightness threshold AP LmaxA first intermediate brightness threshold AP LmidaA first minimum brightness threshold AP LlowaFirst current IaCorresponding to the maximum current threshold ImaxA first intermediate current threshold ImidaMinimum current threshold Ilow。
According to FIG. 3, it can be obtained thatAverage brightness AP LpLess than the first minimum brightness threshold AP LlowaAt first, the maximum current threshold value I is setmaxIs determined as a first current IaThat is to say,
Ia＝Imax，APLp＜APLlowa；
when the average brightness AP LpGreater than or equal to the first minimum brightness threshold AP LlowaAnd is less than the first intermediate brightness threshold AP LmidaWhile calculating the first current IaComprises the following steps:
Ia＝Imax–(Imax–Imida)*(APLp-APLlowa)/(APLmida-APLlowa)，APLlowa≤APLp＜APLmida；
when the average brightness AP LpGreater than or equal to the first intermediate brightness threshold AP LmidaAnd is less than or equal to the maximum brightness threshold AP LmaxWhile calculating the first current IaComprises the following steps:
Ia＝Imida–(Imida–Ilow)*(APLp-APLmida)/(APLmax-APLmida)，APLmida≤APLp≤APLmax。
optionally, the step B includes:
step B1, when the average brightness is smaller than a preset second minimum brightness threshold, determining a preset maximum current threshold as the second current;
step B2, when the average brightness is greater than or equal to the second lowest brightness threshold and less than a preset second middle brightness threshold, according to a preset formula
Ib＝Imax–(Imax–Imidb)*(APLp-APLlowb)/(APLmidb-APLlowb) Calculating the second current;
step B3, when the average brightness is greater than or equal to the second intermediate brightness threshold and less than or equal to the preset maximum brightness threshold, according to the preset formula
Ib＝Imidb–(Imidb–Ilow)*(APLp-APLmidb)/(APLmax-APLmidb) Calculating the second current;
wherein, AP LpFor the average luminance, AP LlowbThe second minimum brightness threshold, AP LmidbFor the second intermediate brightness threshold, AP LmaxIs the maximum brightness threshold value, ImaxIs the maximum current threshold value, ImidbIs a preset second intermediate current threshold, IlowIs a preset minimum current threshold.
Alternatively, if the preset correspondence relationship between the luminance and the multi-power-supply current is as shown in fig. 4, in the figure, the abscissa represents the average luminance AP LpMagnitude, ordinate, representing the corresponding second current IbSize, wherein the average luminance AP LpThere is a corresponding maximum brightness threshold AP LmaxA second intermediate brightness threshold AP LmidbA second minimum brightness threshold AP LlowbSecond current IbCorresponding to the maximum current threshold ImaxA second intermediate current threshold ImidbMinimum current threshold Ilow。
As can be seen from FIG. 4, when the average luminance AP LpLess than the second minimum brightness threshold AP LlowbAt first, the maximum current threshold value I is setmaxIs determined as a second current IbThat is to say,
Ib＝Imax，APLp＜APLlowb；
when the average brightness AP LpGreater than or equal to the second minimum brightness threshold AP LlowbAnd is less than the second intermediate brightness threshold AP LmidbWhile calculating the second current IbComprises the following steps:
Ib＝Imax–(Imax–Imidb)*(APLp-APLlowb)/(APLmidb-APLlowb)，APLlowb≤APLp＜APLmidb；
when the average brightness AP LpGreater than or equal to a second intermediate brightness thresholdAPLmidbAnd is less than or equal to the maximum brightness threshold AP LmaxWhile calculating the second current IbComprises the following steps:
Ib＝Imidb–(Imidb–Ilow)*(APLp-APLmidb)/(APLmax-APLmidb)，APLmidb≤APLp≤APLmax。
after calculating the corresponding first current IaAnd a second current IbThen, according to the first current IaA second current IbAnd a maximum brightness difference Δ AP L, using the formula I ═ Ia*(K–ΔAPL)+IbΔ AP L, calculating to obtain corresponding theoretical current i, optionally according to average brightness AP LpA graph of the relationship between the luminance and the balanced supply current is established with the theoretical current I obtained by calculation, as shown in fig. 5.
Then, the power supply current is configured according to the theoretical current I obtained by calculation, and specific operations can be referred to the description in the first embodiment, which is not described herein again.
In the scheme provided by this embodiment, a first current corresponding to the average brightness is calculated according to the average brightness of each backlight area and the corresponding relationship between the preset brightness and the standard current; calculating a second current corresponding to the average brightness according to the average brightness and a corresponding relation between preset brightness and multiple power supply currents; and then calculating theoretical current corresponding to the average brightness and the maximum brightness difference according to the first current, the second current and the maximum brightness difference, and configuring the power supply current with the theoretical current. Since the theoretical current is obtained by calculating the first current, the second current and the maximum brightness difference, the reliability of the power supply current configuration is further improved.
Furthermore, an embodiment of the present invention further provides a computer-readable storage medium, where a supply current configuration program is stored on the computer-readable storage medium, and when executed by a processor, the supply current configuration program implements the following operations:
detecting the brightness of each backlight area of the display terminal;
obtaining brightness related data based on the brightness of each backlight area, wherein the brightness related data comprises average brightness and maximum brightness difference;
and configuring the supply current based on the average brightness and the maximum brightness difference.
Further, the supply current configuration program when executed by the processor further implements the following operations:
calculating the average brightness of the display terminal and the maximum brightness difference between backlight areas according to the brightness of each backlight area; obtaining theoretical current according to the average brightness, the maximum brightness difference and a preset corresponding relation between the brightness and the current;
and configuring the supply current based on the theoretical current.
Further, the supply current configuration program when executed by the processor further implements the following operations:
calculating a first current corresponding to the average brightness according to the average brightness and a preset corresponding relation between the brightness and a standard current;
calculating a second current corresponding to the average brightness according to the average brightness and a preset corresponding relation between the brightness and the multiple power supply currents;
and calculating theoretical currents corresponding to the average brightness and the maximum brightness difference according to the first current, the second current and the maximum brightness difference.
Further, the supply current configuration program when executed by the processor further implements the following operations:
by using a predetermined formula I ═ Ia*(K–ΔAPL)+IbΔ AP L, calculating a theoretical current corresponding to the average brightness and the maximum brightness difference;
wherein I is the calculated theoretical current, IaIs the first current, IbFor the second current, K is a preset brightness threshold, and Δ AP L is the maximum brightness difference.
Further, the supply current configuration program when executed by the processor further implements the following operations:
when the average brightness is smaller than a preset first minimum brightness threshold value, determining a preset maximum current threshold value as the first current;
when the average brightness is greater than or equal to the first lowest brightness threshold and less than a preset first middle brightness threshold, according to a preset formula
Ia＝Imax–(Imax–Imida)*(APLp-APLlowa)/(APLmida-APLlowa) Calculating the first current;
when the average brightness is greater than or equal to the first intermediate brightness threshold and less than or equal to a preset maximum brightness threshold, according to a preset formula
Ia＝Imida–(Imida–Ilow)*(APLp-APLmida)/(APLmax-APLmida) Calculating the first current;
wherein, AP LpFor the average luminance, AP LlowaIs the first minimum brightness threshold, AP LmidaFor the first intermediate brightness threshold, AP LmaxIs the maximum brightness threshold value, ImaxIs the maximum current threshold value, ImidaIs a preset first intermediate current threshold, IlowIs a preset minimum current threshold.
Further, the supply current configuration program when executed by the processor further implements the following operations:
when the average brightness is smaller than a preset second lowest brightness threshold value, determining a preset maximum current threshold value as the second current;
when the average brightness is greater than or equal to the second lowest brightness threshold and less than a preset second middle brightness threshold, according to a preset formula
Ib＝Imax–(Imax–Imidb)*(APLp-APLlowb)/(APLmidb-APLlowb) Calculating the second current;
when the average brightness is greater than or equal to the second intermediate brightness threshold and less than or equal to a preset maximum brightness threshold, according to a preset formula
Ib＝Imidb–(Imidb–Ilow)*(APLp-APLmidb)/(APLmax-APLmidb) Calculating the second current;
wherein, AP LpFor the average luminance, AP LlowbThe second minimum brightness threshold, AP LmidbFor the second intermediate brightness threshold, AP LmaxIs the maximum brightness threshold value, ImaxIs the maximum current threshold value, ImidbIs a preset second intermediate current threshold, IlowIs a preset minimum current threshold.
In the scheme provided by this embodiment, the power supply of the display terminal is implemented by detecting the brightness of each backlight area of the display terminal, obtaining brightness-related data based on the brightness of each backlight area, where the brightness-related data includes an average brightness and a maximum brightness difference, and configuring the power supply current based on the average brightness and the maximum brightness difference, so as to supply power to the backlight area with the configured power supply current. The configured supply current is determined according to the average brightness and the maximum brightness difference, namely, the overall brightness condition of the screen and the brightness difference condition of the bright and dark areas are considered, so that the supply current is not excessive to cause the overload of a power supply, and is not too small to cause the dark brightness of the screen. Therefore, the effects of not overloading the power supply and avoiding the dark brightness of the screen are achieved.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system 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 system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a terminal, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (8)

1. A configuration method of power supply current of a display terminal is characterized in that the display terminal comprises a plurality of power supplies, external input current of the plurality of power supplies is defined as multi-power supply current, the display terminal is provided with more than two backlight areas, and the configuration method of the power supply current of the display terminal comprises the following steps:
detecting the brightness of each backlight area of the display terminal;
obtaining brightness related data based on the brightness of each backlight area, wherein the brightness related data comprises average brightness and maximum brightness difference;
calculating the average brightness of the display terminal and the maximum brightness difference between backlight areas according to the brightness of each backlight area;
calculating a first current corresponding to the average brightness according to the average brightness and a preset corresponding relation between the brightness and a standard current;
calculating a second current corresponding to the average brightness according to the average brightness and a preset corresponding relation between the brightness and the multiple power supply currents;
calculating theoretical currents corresponding to the average brightness and the maximum brightness difference according to the first current, the second current and the maximum brightness difference;
and configuring the supply current based on the theoretical current.
2. The method as claimed in claim 1, wherein the step of calculating theoretical currents corresponding to the average brightness and the maximum brightness difference according to the first current, the second current and the maximum brightness difference comprises:
by using a predetermined formula I ═ Ia*(K–ΔAPL)+IbΔ AP L, calculating a theoretical current corresponding to the average brightness and the maximum brightness difference;
wherein I is the calculated theoretical current, IaIs the first current, IbFor the second current, K is a preset brightness threshold, and Δ AP L is the maximum brightness difference.
3. The method as claimed in claim 1, wherein the step of calculating the first current corresponding to the average brightness according to the average brightness and the corresponding relationship between the preset brightness and the standard current comprises:
when the average brightness is smaller than a preset first minimum brightness threshold value, determining a preset maximum current threshold value as the first current;
when the average brightness is greater than or equal to the first lowest brightness threshold and less than a preset first middle brightness threshold, according to a preset formula
Ia＝Imax–(Imax–Imida)*(APLp-APLlowa)/(APLmida-APLlowa) Calculating the first current;
when the average brightness is greater than or equal to the first intermediate brightness threshold and less than or equal to a preset maximum brightness threshold, according to a preset formula
Ia＝Imida–(Imida–Ilow)*(APLp-APLmida)/(APLmax-APLmida) Calculating the first current;
wherein, AP LpFor the average luminance, AP LlowaIs the first minimum brightness threshold, AP LmidaFor the first intermediate brightness threshold, AP LmaxIs the maximum brightness threshold value, ImaxIs the maximum current threshold value, ImidaIs a preset first intermediate current threshold, IlowIs a preset minimum current threshold.
4. The method as claimed in claim 1, wherein the step of calculating the second current corresponding to the average brightness according to the average brightness and the corresponding relationship between the preset brightness and the multiple power supply currents comprises:
when the average brightness is smaller than a preset second lowest brightness threshold value, determining a preset maximum current threshold value as the second current;
when the average brightness is greater than or equal to the second lowest brightness threshold and less than a preset second middle brightness threshold, according to a preset formula
Ib＝Imax–(Imax–Imidb)*(APLp-APLlowb)/(APLmidb-APLlowb) Calculating the second current;
when the average brightness is greater than or equal to the second intermediate brightness threshold and less than or equal to a preset maximum brightness threshold, according to a preset formula
Ib＝Imidb–(Imidb–Ilow)*(APLp-APLmidb)/(APLmax-APLmidb) Calculating the second current;
wherein, AP LpFor the average luminance, AP LlowbIs the second lowest brightnessThreshold, AP LmidbFor the second intermediate brightness threshold, AP LmaxIs the maximum brightness threshold value, ImaxIs the maximum current threshold value, ImidbIs a preset second intermediate current threshold, IlowIs a preset minimum current threshold.
5. The method as claimed in claim 1, wherein one of the power supplies corresponds to one of the backlight regions and supplies power to the corresponding backlight region.
6. The method for configuring power supply current of display terminal according to claim 1, wherein the number of the power supplies is one, and the power supplies supply power to the two or more backlight areas.
7. A configuration device of a supply current of a display terminal is characterized by comprising the following components: memory, a processor and a supply current configuration program stored on the memory and executable on the processor, the supply current configuration program when executed by the processor implementing the steps of the method of configuring a display terminal supply current according to any one of claims 1-6.
8. A computer-readable storage medium, characterized in that a supply current configuration program is stored on the computer-readable storage medium, which, when being executed by a processor, implements the steps of the method for configuring a display terminal supply current according to any one of claims 1-6.
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