WO2021254455A1 - 背光亮度值的调节方法、装置、电子设备和存储介质 - Google Patents

背光亮度值的调节方法、装置、电子设备和存储介质 Download PDF

Info

Publication number
WO2021254455A1
WO2021254455A1 PCT/CN2021/100694 CN2021100694W WO2021254455A1 WO 2021254455 A1 WO2021254455 A1 WO 2021254455A1 CN 2021100694 W CN2021100694 W CN 2021100694W WO 2021254455 A1 WO2021254455 A1 WO 2021254455A1
Authority
WO
WIPO (PCT)
Prior art keywords
backlight
curve
screen brightness
target
brightness value
Prior art date
Application number
PCT/CN2021/100694
Other languages
English (en)
French (fr)
Inventor
刘佳健
Original Assignee
闻泰科技(深圳)有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 闻泰科技(深圳)有限公司 filed Critical 闻泰科技(深圳)有限公司
Publication of WO2021254455A1 publication Critical patent/WO2021254455A1/zh

Links

Images

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • 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
    • G09G2320/0613—The adjustment depending on the type of the information to be displayed
    • G09G2320/062—Adjustment of illumination source parameters

Definitions

  • the present disclosure relates to the technical field of backlight brightness, and in particular to a method, device, electronic equipment and storage medium for adjusting the brightness value of the backlight.
  • LCD Liquid Crystal Display
  • LED Light-Emitting Diode, diode
  • a purely linear backlight brightness curve is generally used to determine the LCD backlight brightness value, which varies with the percentage of screen brightness.
  • the backlight brightness value With the increase of, the backlight brightness value also increases linearly, and because the LCD power consumption is proportional to the backlight brightness value, it will cause the LCD to have a poor temperature rise index, and also cause the LCD to have a lower battery life.
  • one of the objectives of the present disclosure is to provide a method, device, electronic device and storage medium for adjusting the brightness value of the backlight, which can better alleviate the problem of poor temperature rise indicators of the LCD, and can also effectively improve the LCD Battery life.
  • an embodiment of the present disclosure provides a backlight brightness value adjustment method, including: obtaining the current screen brightness value of the screen to be adjusted; and determining the current screen brightness value according to a pre-configured two-segment backlight curve The corresponding target screen brightness percentage; calculate the product of the target screen brightness percentage and the upper limit of the preset backlight level interval to obtain the target backlight level at which the target screen brightness percentage is located; based on where the target screen brightness percentage is Determine the backlight current value corresponding to the current screen brightness value; adjust the backlight brightness value of the screen to be adjusted based on the backlight current value.
  • the two-segment backlight curve is configured to represent the first mapping relationship between the screen brightness value and the screen brightness percentage.
  • a control chip and an EC chip are provided in the terminal; the control chip determines that the current screen brightness value corresponds to the current screen brightness value based on the first mapping relationship represented in the pre-configured two-segment backlight curve The target screen brightness percentage of the target screen; the product of the target screen brightness percentage and the upper limit value of the preset backlight level interval is calculated by the control chip to obtain the target backlight level at which the target screen brightness percentage is located; through the control chip The target backlight level is passed to the EC chip.
  • the step of determining the backlight current value corresponding to the current screen brightness value based on the target backlight level at which the target screen brightness percentage is located includes: The corresponding relationship between the empty ratios is to determine the target duty ratio corresponding to the target backlight level; and the backlight current value corresponding to the current screen brightness value is determined based on the target duty ratio.
  • an EC chip and a backlight driver IC are provided in the terminal; the EC chip is used to determine the target corresponding to the target backlight level based on the pre-configured correspondence between the backlight level and the duty cycle. And pass the target duty ratio to the backlight driver IC; the backlight driver IC determines the backlight current value corresponding to the current screen brightness value based on the target duty ratio.
  • the backlight driver IC adjusts the backlight brightness value of the screen to be adjusted based on the backlight current value.
  • the method further includes: reading a pre-determined initial backlight curve; wherein the initial backlight curve is configured to represent a second mapping relationship between the screen brightness value and the screen brightness percentage; adjusting The initial backlight curve obtains the two-segment backlight curve.
  • 0-40% of the screen brightness percentage is taken as the first interval, and 40%-100% as the second interval.
  • a control chip and a storage chip are configured in the terminal, and the storage chip is configured to store an initial backlight curve; through the control chip, a pre-determined initial backlight curve is read from the storage chip ; Adjust the initial backlight curve through the control chip to obtain the two-segment backlight curve.
  • the two-segment backlight curve obtained after adjusting the initial backlight curve is stored by the storage chip; the two-segment backlight curve is directly called by the control chip.
  • a control chip is configured in the terminal, the terminal is in communication with a server, and the server stores an initial backlight curve; acquiring the initial backlight curve transmitted by the server; The chip adjusts the initial backlight curve to obtain the two-segment backlight curve.
  • the terminal is in communication connection with a brightness measurement device; the terminal device obtains the current screen brightness value measured by the brightness measurement device.
  • the terminal is in communication connection with the server, and the server is in communication connection with the brightness measuring device; the terminal obtains the current screen brightness value transmitted by the server; wherein, the current screen brightness value transmitted by the server Is the current screen brightness value measured by the brightness measurement device.
  • an embodiment of the present disclosure further provides a backlight brightness value adjustment device, including: a brightness value acquisition module configured to acquire the current screen brightness value of the screen to be adjusted; and a current value determination module configured to A pre-configured two-segment backlight curve determines the target screen brightness percentage corresponding to the current screen brightness value; calculates the product of the target screen brightness percentage and the upper limit of the preset backlight level interval to obtain the target screen brightness percentage The target backlight level; based on the target backlight level at which the target screen brightness percentage is located, determine the backlight current value corresponding to the current screen brightness value; the backlight adjustment module is configured to adjust the standby based on the backlight current value Adjust the backlight brightness value of the screen.
  • a brightness value acquisition module configured to acquire the current screen brightness value of the screen to be adjusted
  • a current value determination module configured to A pre-configured two-segment backlight curve determines the target screen brightness percentage corresponding to the current screen brightness value; calculates the product of the target screen brightness percentage and the upper limit of
  • the two-segment backlight curve includes a first mapping relationship between a screen brightness value and a screen brightness percentage.
  • an embodiment of the present disclosure further provides an electronic device, including a memory and one or more processors, the memory stores computer-readable instructions, and the computer-readable instructions are When executed by one or more processors, the one or more processors are caused to execute the steps of any one of the methods provided in the foregoing embodiments.
  • the embodiment of the present disclosure further provides one or more non-volatile computer-readable storage media storing computer-readable instructions.
  • the computer-readable instructions are executed by one or more processors, , Causing the one or more processors to execute the steps for implementing the method described in any one of the foregoing embodiments.
  • FIG. 1a is a schematic diagram of an application environment of a method for adjusting the brightness value of a backlight according to an embodiment of the present disclosure
  • FIG. 1b is a schematic diagram of the connection of an electronic device provided by an embodiment of the disclosure.
  • FIG. 2 is a schematic flowchart of a method for adjusting the brightness value of a backlight according to an embodiment of the disclosure
  • FIG. 3 is a schematic diagram of an initial backlight curve provided by an embodiment of the disclosure.
  • FIG. 4 is a schematic diagram of a two-segment backlight curve provided by an embodiment of the disclosure.
  • FIG. 5 is a schematic diagram of analyzing a backlight power consumption factor provided by an embodiment of the present disclosure
  • FIG. 6 is a schematic flowchart of another method for adjusting the brightness value of a backlight according to an embodiment of the present disclosure
  • FIG. 7 is a schematic structural diagram of a backlight brightness value adjustment device provided by an embodiment of the disclosure.
  • FIG. 8 is a schematic structural diagram of an electronic device provided by an embodiment of the disclosure.
  • the current solutions for adjusting the backlight brightness of LCD screens mainly include the following two: First, the backlight brightness is adjusted through the Qualcomm backlight PWM (Pulse Width Modulation) hardware design.
  • This solution can include Qualcomm SCO (System-on-a- Chip, system-on-chip) PWM, EC (Embed Controller, embedded controller) chip PWM and LCD built-in PWM three hardware designs, for example, Qualcomm SCO chip or EC chip to Backlight Driver IC (backlight driver IC) Output PWM duty cycle, the backlight driver IC adjusts the LCD backlight current according to the change of the PWM duty cycle, thereby controlling the brightness change of the backlight source LED; second, the EC chip sends a PWM signal to control the backlight brightness.
  • Qualcomm backlight PWM Pulse Width Modulation
  • both of the above two solutions use a purely linear backlight brightness curve. Therefore, the above two solutions will cause the LCD to have a poor temperature rise index, and also cause the LCD to have a lower battery life.
  • the implementation of the present disclosure provides a method, device, electronic equipment and storage medium for adjusting the brightness value of the backlight, which can better alleviate the problem of poor temperature rise indicators of the LCD, and can also effectively improve the battery life of the LCD time.
  • the method for adjusting the brightness value of the backlight can be applied to the application environment as shown in FIG. 1a.
  • the backlight brightness value adjustment method is applied to the backlight brightness adjustment system.
  • the system includes a terminal 102 and a server 104. Wherein, the terminal 102 and the server 104 communicate through the network.
  • the terminal 102 obtains the current screen brightness value of the screen to be adjusted, and then determines the backlight current value corresponding to the current screen brightness value according to the pre-configured two-segment backlight curve, so as to adjust the backlight brightness value of the screen to be adjusted based on the backlight current value.
  • the terminal may be an electronic device equipped with an LCD screen.
  • the electronic device may not be limited to various televisions, personal computers, and notebook computers.
  • the server 104 may be configured as an independent server or a server cluster composed of multiple servers. accomplish.
  • a pre-configured two-segment backlight curve or an initial backlight curve can be stored by the server, and the initial backlight curve can be used to generate a two-segment backlight curve.
  • the adjustment system further includes a brightness measurement device 106.
  • the current screen brightness value of the screen is measured by the brightness measuring device 106.
  • the brightness measuring device 106 transmits the current screen brightness value to the terminal 102 or the server 104.
  • the server 104 transmits the current screen brightness value to the terminal 102.
  • the terminal 102 is in communication connection with the server 104
  • the brightness measurement device 106 is in communication connection with the terminal 102 and/or the server 104.
  • the terminal 102 includes a control chip, an EC chip, and a backlight driving IC.
  • the control chip, the EC chip and the backlight drive IC are connected in sequence.
  • the illustrated flow chart of a method for adjusting the brightness value of a backlight mainly includes the following steps S202 to S206:
  • Step S202 Obtain the current screen brightness value of the screen to be adjusted.
  • the screen to be adjusted may be an LCD screen in the terminal 102 whose backlight brightness is to be adjusted, and the physical unit of the screen brightness value is nit (nits).
  • the brightness measurement device can be used to measure the current screen brightness value of the LCD screen.
  • the terminal and the brightness measuring device can communicate through the network, and then the brightness measuring device automatically uploads the measured current screen brightness value to the terminal for measurement, and the terminal will obtain the current screen brightness value.
  • the server and the brightness measurement device can communicate through the network. The brightness measurement device uploads the measured current screen brightness value to the server, and the server transmits the current screen brightness value to the terminal, so that the terminal Obtain the current screen brightness value from the server.
  • the terminal is in communication connection with the brightness measurement device; the terminal device obtains the current screen brightness value measured by the brightness measurement device.
  • the terminal is in communication connection with the server, and the server is in communication connection with the brightness measurement device; the terminal obtains the current screen brightness value transmitted by the server; where the current screen brightness value transmitted by the server is the current value measured by the brightness measurement device Screen brightness value.
  • Step S204 Determine the backlight current value corresponding to the current screen brightness value according to the pre-configured two-segment backlight curve.
  • the two-segment backlight curve includes a linear interval and a non-linear interval.
  • the two-segment backlight curve is configured to represent the first mapping relationship between the screen brightness value and the screen brightness percentage.
  • the two-segment backlight curve can be compared to the prior art The pure linear backlight brightness curve is adjusted.
  • the third mapping relationship between the screen brightness percentage and the backlight current value can also be configured, so that the terminal can combine the first mapping relationship represented by the two-segment backlight curve and the foregoing third mapping relationship.
  • the third mapping relationship may include multiple sub-mapping relationships, such as the sub-mapping relationship between the screen brightness percentage and the backlight level, and the sub-mapping between the backlight level and the PWM duty cycle Relationship, sub-mapping relationship between PWM duty cycle and backlight current value, etc.
  • the terminal is provided with a control chip, an EC chip, and a backlight driver IC, and the control chip in the terminal determines the current screen brightness value based on the first mapping relationship represented by the pre-configured two-segment backlight curve Corresponding to the target screen brightness percentage, and calculate the product of the target screen brightness percentage and the upper limit of the preset backlight level interval to obtain the target backlight level at which the target screen brightness percentage is located, that is, determine the target backlight level at which the target screen brightness percentage is located ,
  • the control chip transfers the target backlight level to the EC chip, and the EC chip determines the target duty cycle corresponding to the target backlight level according to the pre-configured correspondence between the backlight level and the duty cycle, that is, calculates the PWM duty cycle based on the target backlight level.
  • the duty cycle (target duty cycle), and the target duty cycle is passed to the backlight driver IC.
  • the backlight driver IC determines the backlight current value corresponding to the current screen brightness value according to the PWM duty cycle (target duty cycle), and completes the action of calculating the backlight current value.
  • control chip determines the target screen brightness percentage corresponding to the current screen brightness value based on the first mapping relationship represented by the pre-configured two-segment backlight curve; the control chip calculates the target screen brightness percentage Multiply the product with the upper limit value of the preset backlight level interval to obtain the target backlight level at which the target screen brightness percentage is located; the target backlight level is transmitted to the EC chip through the control chip.
  • the EC chip determines the target duty cycle corresponding to the target backlight level based on the pre-configured correspondence between the backlight level and the duty cycle, and transmits the target duty cycle to the backlight driver IC ; Determine the backlight current value corresponding to the current screen brightness value based on the target duty cycle through the backlight driver IC.
  • Step S206 Adjust the backlight brightness value of the screen to be adjusted based on the backlight current value.
  • the backlight driver IC in the terminal can adjust the backlight brightness value of the screen to be adjusted based on the backlight current value, and the user can experience the brightness change of the backlight brightness value of the screen to be adjusted.
  • the backlight brightness value of the screen to be adjusted is adjusted based on the backlight current value through the backlight driver IC.
  • the foregoing backlight brightness value adjustment method uses a two-segment backlight curve including a linear interval and a non-linear interval to determine the backlight current value corresponding to the current screen brightness value, and then adjusts the backlight brightness of the screen based on the current value.
  • the two-segment backlight curve provided by the embodiments of the present disclosure better optimizes the corresponding relationship between the screen brightness value and the backlight current value. , Thereby reducing the power consumption of the screen to be adjusted, which can better alleviate the problem of poor temperature rise index of the screen to be adjusted, and can effectively improve the battery life of the screen to be adjusted.
  • the embodiment of the present disclosure also provides a two-segment backlight curve acquisition method, which may be performed before the above step S204 is executed.
  • the pre-determined initial backlight curve can be read, and then the initial backlight curve can be adjusted to obtain a two-segment backlight curve.
  • the initial backlight curve is configured to represent the second mapping relationship between the screen brightness value and the screen brightness percentage.
  • the terminal may be equipped with a storage chip configured to store the initial backlight curve. When the backlight brightness value of the screen to be adjusted of the terminal needs to be adjusted, the control chip can directly read the pre-measured value from the storage chip.
  • Initial backlight curve The initial backlight curve can also be stored in a designated storage area in the server.
  • the server sends the initial backlight curve to the terminal through network communication, that is, the server stores the initial backlight curve; the terminal obtains the initial backlight curve transmitted by the server. So that the control chip of the terminal adjusts the initial backlight curve to obtain the required two-segment backlight curve, that is, the control chip adjusts the initial backlight curve to obtain the two-segment backlight curve.
  • the terminal is equipped with a control chip and a memory chip, and the memory chip is configured to store the initial backlight curve; through the control chip, the pre-determined initial backlight curve is read from the memory chip; and the initial backlight curve is adjusted by the control chip. Backlight curve, a two-segment backlight curve is obtained.
  • the terminal is equipped with a control chip
  • the terminal communicates with the server, and the server stores the initial backlight curve; obtains the initial backlight curve transmitted by the server; adjusts the initial backlight curve through the control chip to obtain a two-segment backlight curve.
  • the present disclosure exemplarily provides an embodiment for adjusting the initial backlight curve to obtain a two-segment backlight curve, see the following steps a to c:
  • Step a Divide the initial backlight curve into a first interval and a second interval.
  • the initial backlight curve is a pure linear curve.
  • the embodiment of the present disclosure exemplarily provides a screen brightness value and a percentage of screen brightness in the initial backlight curve (that is, , PWM%), as shown in Table 1.
  • 0-40% of the screen brightness percentage in the initial backlight curve may be used as the first interval, and 40%-100% of the screen brightness percentage may be used as the second interval.
  • Step b Perform nonlinear interpolation processing on the first interval of the initial backlight curve to obtain the nonlinear interval.
  • smoother nonlinearity can be used for data interpolation processing to obtain the nonlinear interval of the two-segment backlight brightness curve.
  • Step c Perform linear interpolation smoothing processing on the second interval of the initial backlight curve to obtain a linear interval.
  • the 100% to 40% interval in the initial backlight curve may be processed by linear interpolation smoothing processing to obtain the linear interval of the two-segment backlight brightness curve.
  • the screen brightness percentage takes the maximum screen brightness value of 250nit as the upper limit, and the screen brightness value is reduced evenly for every 2% percentage.
  • the terminal processes the initial backlight curve according to the above steps a to c, and obtains a schematic diagram of a two-segment backlight curve as shown in FIG. 4, where the 0-40% interval is a non-linear interval, and 40% The ⁇ 100% interval is a linear interval.
  • the embodiment of the present disclosure can obtain the two-segment backlight curve based on the initial backlight curve, and then convert the obtained two-segment backlight curve.
  • the memory chip is configured to store the two-segment backlight curve obtained after adjusting the initial backlight curve.
  • the control chip can directly retrieve the two-segment backlight curve from the storage chip, thereby improving the efficiency of adjusting the backlight brightness value to a certain extent.
  • the two-segment backlight curve obtained after adjusting the initial backlight curve is stored by the storage chip; the two-segment backlight curve is directly called by the control chip.
  • the embodiment of the present disclosure provides a specific implementation manner for determining the backlight current value corresponding to the current screen brightness value according to a pre-configured two-segment backlight curve, wherein the two-segment backlight curve is configured To represent the first mapping relationship between the screen brightness value and the screen brightness percentage, refer to the following steps 1 to 3 for details:
  • Step 1 Determine the target screen brightness percentage corresponding to the current screen brightness value according to the pre-configured two-segment backlight curve.
  • Table 2 when the control chip of the terminal knows the current screen brightness value of the screen to be adjusted, it can search for the target screen brightness percentage corresponding to the current screen brightness value based on the first mapping relationship shown in Table 2. For example, when the current screen brightness value is 250nit, the control chip determines that the screen brightness percentage is 100% by looking up the table.
  • Step 2 Calculate the target backlight level at which the target screen brightness percentage is within the preset backlight level interval.
  • the preset backlight level interval may be 0-255.
  • the control chip may use ACPI (Advanced Configuration and Power Management Interface) function to determine the target backlight level at which the target screen brightness percentage is located.
  • ACPI Advanced Configuration and Power Management Interface
  • Step 3 Determine the backlight current value corresponding to the current screen brightness value based on the target backlight level at which the target screen brightness percentage is located.
  • the target duty ratio corresponding to the target backlight level may be determined according to the pre-configured correspondence between the backlight level and the duty cycle, and then the backlight corresponding to the current screen brightness value may be determined based on the target duty ratio. Current value.
  • the BLCP interface function can be used to transfer the target backlight level to the EC chip, and the EC chip determines the target duty cycle corresponding to the target backlight level according to the pre-configured correspondence between the backlight level and the duty cycle, and then based on the backlight
  • the driver IC determines the backlight current value according to the target duty cycle output by the EC chip.
  • the embodiment of the present disclosure analyzes the backlight power consumption factor, refer to the backlight power consumption shown in FIG. 5 Schematic diagram of factor analysis.
  • the backlight power consumption influence factor mainly includes two aspects: software factor and hardware factor.
  • software factors include backlight brightness curve factors and CABC (Content Adaptive Brightness Control, backlight dynamic mechanism) factors.
  • Backlight brightness curve factors include user-defined curves and benchmarking machine curves.
  • CABC factors include Disable CABC when playing video backlight current consumption.
  • Constant and Enable CABC playback video backlight current consumption dynamics, etc.; hardware factors also include backlight LED current limiting resistance setting factors and backlight individual LED lamp bead power difference factors, backlight LED current limiting resistance setting factors in the resistance setting the maximum brightness value (For example, the maximum brightness value of the mobile phone screen is 360nit), the power difference factor of individual LED lamp beads in the backlight needs to be controlled and defined by the screen manufacturer.
  • the method for adjusting the brightness of the backlight provided in the application embodiment is proposed for the factor of the backlight brightness curve.
  • the embodiment of the present disclosure further provides another method for adjusting the brightness value of the backlight.
  • Schematic flow chart. The method is executed by a terminal equipped with an LCD screen.
  • the terminal is equipped with a control chip, an EC chip and a backlight driver IC.
  • the method mainly includes the following steps S602 to S608:
  • Step S602 Determine the backlight level in response to the sliding operation on the backlight brightness bar in the Windows interface.
  • the user needs to use the brightness measurement device to measure the current screen brightness value of the Windows interface. After the terminal obtains the measured current screen brightness value, it can determine the backlight level corresponding to the current screen brightness value based on the two-segment backlight curve, and then Use the ACPI function to determine the backlight level in accordance with the method shown in step 2 above.
  • the BLCP interface in the ACPI function is used to transmit the PWM duty cycle to the EC chip based on the backlight level.
  • the backlight level can also be called 256 gray scales;
  • N represents the PWM duty cycle;
  • the Gamma value represents a parameter of the corresponding characteristics of the LCD device brightness.
  • the Gamma value is usually a constant and can be configured by the terminal manufacturer.
  • step S606 the backlight driving IC adjusts the backlight current value based on the PWM duty ratio.
  • step S608 the backlight brightness value is adjusted according to the backlight current value.
  • the backlight brightness value adjustment method optimizes the mapping relationship between the screen brightness value and the screen brightness percentage through the two-segment backlight brightness curve, without affecting the subjective and objective characteristics of the LCD device. It reduces the power consumption of the backlight, thereby improving the temperature rise scene and improving the overall battery life indicator time of the whole machine.
  • an embodiment of the present disclosure provides a backlight brightness value adjustment device. See FIG. 7 for a schematic structural diagram of a backlight brightness value adjustment device. Include the following parts:
  • the brightness value obtaining module 702 is configured to obtain the current screen brightness value of the screen to be adjusted.
  • the current value determining module 704 is configured to determine the backlight current value corresponding to the current screen brightness value according to a pre-configured two-segment backlight curve; wherein, the two-segment backlight curve includes a linear area and a non-linear area.
  • the backlight adjustment module 706 is configured to adjust the backlight brightness value of the screen to be adjusted based on the backlight current value.
  • the aforementioned backlight brightness value adjustment device uses a two-segment backlight curve including a linear interval and a non-linear interval to determine the backlight current value corresponding to the current screen brightness value, and then adjusts the backlight brightness of the screen based on the current value.
  • the two-segment backlight curve provided by the embodiments of the present disclosure better optimizes the corresponding relationship between the screen brightness value and the backlight current value. , Thereby reducing the power consumption of the screen to be adjusted, which can better alleviate the problem of poor temperature rise index of the screen to be adjusted, and can effectively improve the battery life of the screen to be adjusted.
  • the two-segment backlight curve includes the first mapping relationship between the screen brightness value and the screen brightness percentage; the current value determining module 704 is further configured to: determine the current screen according to the pre-configured two-segment backlight curve The target screen brightness percentage corresponding to the brightness value; calculate the target backlight level of the target screen brightness percentage within the preset backlight level interval; determine the backlight current value corresponding to the current screen brightness value based on the target backlight level where the target screen brightness percentage is located .
  • the current value determining module 704 is further configured to calculate the product of the target screen brightness percentage and the upper limit value of the preset backlight level interval to obtain the target backlight level at which the target screen brightness percentage is located.
  • the current value determining module 704 is further configured to: determine the target duty cycle corresponding to the target backlight level according to the pre-configured correspondence between the backlight level and the duty cycle; and determine the current value based on the target duty cycle.
  • the above-mentioned device further includes a curve adjustment module configured to: read a pre-determined initial backlight curve; wherein the initial backlight curve is configured to represent a second mapping relationship between the screen brightness value and the screen brightness percentage; Adjust the initial backlight curve to obtain a two-segment backlight curve.
  • a curve adjustment module configured to: read a pre-determined initial backlight curve; wherein the initial backlight curve is configured to represent a second mapping relationship between the screen brightness value and the screen brightness percentage; Adjust the initial backlight curve to obtain a two-segment backlight curve.
  • the curve adjustment module is further configured to: divide the initial backlight curve into a first interval and a second interval; perform nonlinear interpolation processing on the first interval of the initial backlight curve to obtain the nonlinear interval; The second interval of the curve is smoothed by linear interpolation to obtain a linear interval.
  • the embodiments of the present disclosure provide an electronic device, and the electronic device may be a computer device.
  • the electronic device includes a processor and one or more memories; the memory stores computer-readable instructions, and when the computer-readable instructions are executed by the processor, the one or more processors execute any one of the foregoing embodiments. The method described in the item.
  • the embodiments of the present disclosure also provide one or more non-volatile computer-readable storage media storing computer-readable instructions.
  • the computer-readable instructions are executed by one or more processors, the one or more processors execute The steps of the method described in any one of the above embodiments are implemented.
  • the electronic device 100 includes a processor 80, a memory 81, a bus 82, and a communication interface 83.
  • the processor 80, the communication interface 83, and the memory 81 pass through the bus 82.
  • Connect; the processor 80 is configured to execute executable modules stored in the memory 81, such as computer-readable instructions.
  • the memory 81 may include a high-speed random access memory (RAM, Random Access Memory), and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.
  • RAM Random Access Memory
  • non-volatile memory non-volatile memory
  • the communication connection between the network element of the system and at least one other network element is realized through at least one communication interface 83 (which may be wired or wireless), and the Internet, a wide area network, a local network, a metropolitan area network, etc. may be used.
  • any reference to memory, storage, database or other media used in the embodiments provided in the present disclosure may include non-volatile and/or volatile memory.
  • Non-volatile memory may include read only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory.
  • Volatile memory may include random access memory (RAM) or external cache memory.
  • RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous chain Channel (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM) and memory bus dynamic RAM (RDRAM), etc.
  • the bus 82 may be an ISA bus, a PCI bus, an EISA bus, or the like.
  • the bus can be divided into an address bus, a data bus, or a control bus.
  • Only one bidirectional arrow is used in FIG. 8, but it does not mean that there is only one bus or one type of bus.
  • the memory 81 is configured to store a program, and the processor 80 executes the program after receiving an execution instruction.
  • the method executed by the device disclosed in any of the foregoing embodiments of the present disclosure may be applied to the processor 80, or The processor 80 is implemented.
  • the processor 80 may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps of the foregoing method can be completed by an integrated logic circuit of hardware in the processor 80 or instructions in the form of software.
  • the aforementioned processor 80 may be a general-purpose processor, including a central processing unit (Central Processing Unit, CPU for short), a network processor (Network Processor, NP), etc.; it may also be a digital signal processor (Digital Signal Processing, DSP for short), etc. ), Application Specific Integrated Circuit (ASIC for short), Field-Programmable Gate Array (FPGA for short) or other programmable logic devices, discrete gates or transistor logic devices or discrete hardware components.
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present disclosure can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present disclosure may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field, such as random access memory, flash memory or read-only memory, programmable read-only memory, or electrically erasable programmable memory or registers.
  • the storage medium is located in the memory 81, and the processor 80 reads the information in the memory 81, and completes the steps of the above method in combination with its hardware.
  • the computer-readable instruction product of the readable storage medium provided in the embodiments of the present disclosure includes a computer-readable storage medium storing program code, and the instructions included in the program code can be configured to execute the method described in the previous method embodiment For specific implementation, refer to the foregoing method embodiment, which is not repeated here.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of the present disclosure essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present disclosure.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disks or optical disks and other media that can store program codes. .
  • the foregoing method uses a two-segment backlight curve including a linear interval and a non-linear interval to determine the backlight current value corresponding to the current screen brightness value, and then adjusts the backlight brightness of the screen to be adjusted based on the current value.
  • the two-segment backlight curve provided by the embodiment of the present invention better optimizes the corresponding relationship between the screen brightness value and the backlight current value, thereby The power consumption of the screen to be adjusted is reduced, and the problem of poor temperature rise index of the screen to be adjusted can be better alleviated, and the battery life of the screen to be adjusted can also be effectively improved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

一种背光亮度值的调节方法、装置、电子设备(100)和存储介质，包括：获取待调节屏幕的当前屏幕亮度值(S202)；根据预先配置的两段式背光曲线，确定当前屏幕亮度值对应的背光电流值(S204)；其中，两段式背光曲线包括线性区间和非线性区间；基于背光电流值调节待调节屏幕的背光亮度值(S206)。调节方法可以较好地缓解LCD存在整机温升指标差的问题，还可以有效提高LCD的续航时间。

Description

背光亮度值的调节方法、装置、电子设备和存储介质
相关申请的交叉引用
本公开要求于2020年06月18日提交中国专利局的申请号为2020105635675、名称为“背光亮度值的调节方法、装置、电子设备和存储介质”的中国专利申请的优先权，其全部内容通过引用结合在本公开中。
技术领域
本公开涉及背光亮度技术领域，尤其是涉及一种背光亮度值的调节方法、装置、电子设备和存储介质。
背景技术
LCD(Liquid Crystal Display，液晶显示器)是一种需要利用LED(Light-Emitting Diode，二极管)作为背光源的显示器，目前通常采用纯线性的背光亮度曲线确定LCD的背光亮度值，随着屏幕亮度百分比的增加，背光亮度值也随之线性增长，又由于LCD功耗与该背光亮度值呈正比，因此将导致LCD存在整机温升指标差，同时还致使LCD续航时间较低。
发明内容
有鉴于此，本公开的目的之一为提供一种背光亮度值的调节方法、装置、电子设备和存储介质，可以较好地缓解LCD存在整机温升指标差的问题，还可以有效提高LCD的续航时间。
在一个实施例中，本公开实施例提供了一种背光亮度值的调节方法，包括：获取待调节屏幕的当前屏幕亮度值；根据预先配置的两段式背光曲线，确定所述当前屏幕亮度值对应的目标屏幕亮度百分比；计算所述目标屏幕亮度百分比和预设背光等级区间的上限值的乘积，得到所述目标屏幕亮度百分比所处的目标背光等级；基于所述目标屏幕亮度百分比所处的目标背光等级，确定所述当前屏幕亮度值对应的背光电流值；基于所述背光电流值调节所述待调节屏幕的背光亮度值。
在一种可能的实现方式中，所述两段式背光曲线配置成表征屏幕亮度值和屏幕亮度百分比之间的第一映射关系。
在一种可能的实现方式中，终端中设置有控制芯片和EC芯片；通过所述控制芯片基于预先配置的两段式背光曲线中所表征的第一映射关系，确定所述当前屏幕亮度值对应的目标屏幕亮度百分比；通过所述控制芯片计算所述目标屏幕亮度百分比和预设背光等级区间的上限值的乘积，得到所述目标屏幕亮度百分比所处的目标背光等级；通过所述控制芯片将目标背光等级 传递至所述EC芯片。
在一种可能的实现方式中，所述基于所述目标屏幕亮度百分比所处的目标背光等级，确定所述当前屏幕亮度值对应的背光电流值的步骤，包括：根据预先配置的背光等级与占空比之间的对应关系，确定所述目标背光等级对应的目标占空比；基于所述目标占空比确定所述当前屏幕亮度值对应的背光电流值。
在一种可能的实现方式中，终端中设置有EC芯片和背光驱动IC；通过所述EC芯片基于预先配置的背光等级与占空比之间的对应关系，确定所述目标背光等级对应的目标占空比，并将目标占空比传递至所述背光驱动IC；通过所述背光驱动IC基于所述目标占空比确定所述当前屏幕亮度值对应的背光电流值。
在一种可能的实现方式中，通过所述背光驱动IC基于所述背光电流值调节所述待调节屏幕的背光亮度值。
在一种可能的实现方式中，所述方法还包括：读取预先测定的初始背光曲线；其中，所述初始背光曲线配置成表征屏幕亮度值和屏幕亮度百分比之间的第二映射关系；调整所述初始背光曲线得到所述两段式背光曲线。
在一种可能的实现方式中，其中，所述两段式背光曲线包括线性区间和非线性区间；所述调整所述初始背光曲线得到所述两段式背光曲线的步骤，包括：将所述初始背光曲线划分为第一区间和第二区间；对所述初始背光曲线的第一区间进行非线性插值处理，得到所述非线性区间；对所述初始背光曲线的第二区间进行线性插值平滑处理，得到所述线性区间。
在一种可能的实现方式中，将所述屏幕亮度百分比的0～40％作为第一区间，40％～100％作为第二区间。
在一种可能的实现方式中，终端中配置有控制芯片和存储芯片，所述存储芯片配置成存储初始背光曲线；通过所述控制芯片，从所述存储芯片中读取预先测定的初始背光曲线；通过所述控制芯片调整所述初始背光曲线，得到所述两段式背光曲线。
在一种可能的实现方式中，通过所述存储芯片存储调整所述初始背光曲线后得到的所述两段式背光曲线；通过所述控制芯片直接调用所述两段式背光曲线。
在一种可能的实现方式中，终端中配置有控制芯片，所述终端与服务器通信连接，所述服务器中存储有初始背光曲线；获取所述服务器传输的所述初始背光曲线；通过所述控制芯片调整所述初始背光曲线得到所述两段式背光曲线。
在一种可能的实现方式中，终端与亮度测量设备通信连接；所述终端设备获取所述亮度测量设备测量得到的所述当前屏幕亮度值。
在一种可能的实现方式中，终端与服务器通信连接，所述服务器与亮度测量设备通信连接； 所述终端获取所述服务器传输的当前屏幕亮度值；其中，所述服务器传输的当前屏幕亮度值为所述亮度测量设备测量得到的当前屏幕亮度值。
在一个可能地实施例中，本公开实施例还提供一种背光亮度值的调节装置，包括：亮度值获取模块，配置成获取待调节屏幕的当前屏幕亮度值；电流值确定模块，配置成根据预先配置的两段式背光曲线，确定所述当前屏幕亮度值对应的目标屏幕亮度百分比；计算所述目标屏幕亮度百分比和预设背光等级区间的上限值的乘积，得到所述目标屏幕亮度百分比所处的目标背光等级；基于所述目标屏幕亮度百分比所处的目标背光等级，确定所述当前屏幕亮度值对应的背光电流值；背光调整模块，配置成基于所述背光电流值调节所述待调节屏幕的背光亮度值。
在一种可能的实现方式中，所述两段式背光曲线包括屏幕亮度值和屏幕亮度百分比之间的第一映射关系。
在一个可能地实施例中，本公开实施例还提供一种电子设备，包括存储器及一个或多个处理器，所述存储器中储存有计算机可读指令，所述计算机可读指令被所述一个或多个处理器执行时，使得所述一个或多个处理器执行上述实施例提供的任一项所述的方法的步骤。
在一个可能地实施例中，本公开实施例还提供一个或多个存储有计算机可读指令的非易失性计算机可读存储介质，所述计算机可读指令被一个或多个处理器执行时，使得所述一个或多个处理器执行实现上述实施例中的任一项所述的方法的步骤。
本公开的其他特征和优点将在随后的说明书中阐述，并且，部分地从说明书中变得显而易见，或者通过实施本公开而了解。本公开的目的和其他优点在说明书、权利要求书以及附图中所特别指出的结构来实现和获得。
为使本公开的上述目的、特征和优点能更明显易懂，下文特举可选实施例，并配合所附附图，作详细说明如下。
附图说明
为了更清楚地说明本公开具体实施方式或现有技术中的技术方案，下面将对具体实施方式或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本公开的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1a为本公开实施例提供的一种背光亮度值的调节方法的应用环境示意图；
图1b为本公开实施例提供的一种电子设备的连接示意图；
图2为本公开实施例提供的一种背光亮度值的调节方法的流程示意图；
图3为本公开实施例提供的一种初始背光曲线的示意图；
图4为本公开实施例提供的一种两段式背光曲线的示意图；
图5为本公开实施例提供的一种背光功耗因子的分析示意图；
图6为本公开实施例提供的另一种背光亮度值的调节方法的流程示意图；
图7为本公开实施例提供的一种背光亮度值的调节装置的结构示意图；
图8为本公开实施例提供的一种电子设备的结构示意图。
具体实施方式
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合实施例对本公开的技术方案进行清楚、完整地描述，显然，所描述的实施例是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
目前调整LCD屏幕背光亮度的方案主要包括以下两种：其一，通过高通背光PWM(Pulse Width Modulation，脉冲宽度调制技术)硬件设计调控背光亮度，该方案可以包括高通SCO(System-on-a-Chip，系统单晶片)的PWM、EC(Embed Controller，嵌入式控制器)芯片的PWM和LCD自带的PWM三种硬件设计，例如，高通SCO芯片或EC芯片向Backlight Driver IC(背光驱动IC)输出PWM占空比，背光驱动IC根据PWM占空比的变化调整LCD背光电流大小，从而控制背光源LED的亮度变化；其二，通过EC芯片发送PWM信号控制背光亮度。然而上述两种方案均采用的是纯线性的背光亮度曲线，因此上述两种方案将导致LCD存在整机温升指标差，同时还致使LCD续航时间较低。为改善上述问题，本公开实施提供了一种背光亮度值的调节方法、装置、电子设备和存储介质，可以较好地缓解LCD存在整机温升指标差的问题，还可以有效提高LCD的续航时间。
本公开实施例提供的背光亮度值的调节方法，可以应用于如图1a所示的应用环境中。该背光亮度值的调节方法应用于背光亮度的调节系统中。该系统包括终端102与服务器104。其中，终端102与服务器104通过网络进行通信。通过终端102获取待调节屏幕的当前屏幕亮度值，然后根据预先配置的两段式背光曲线，确定当前屏幕亮度值对应的背光电流值，从而基于该背光电流值调节待调节屏幕的背光亮度值。其中，终端可以为配置有LCD屏幕的电子设备，电子设备可以单不限于是各种电视机、个人计算机和笔记本电脑等，服务器104可以配置成独立的服务器或者是多个服务器组成的服务器集群来实现。
请参考图1b，在一种可能的实现方式中，可以通过服务器存储预先配置的两段式背光曲线或初始背光曲线，初始背光曲线可用于生成两段式背光曲线。
在一种可能的实现方式中，调节系统还包括亮度测量设备106。通过亮度测量设备106测 量屏幕的当前屏幕亮度值。亮度测量设备106将当前屏幕亮度值传输给终端102或者服务器104。在亮度测量设备106将当前屏幕亮度值传输给服务器104的情况下，服务器104将当前屏幕亮度值传输给终端102。
可能地，本公开实施例中，终端102与服务器104通信连接，亮度测量设备106与终端102和/或服务器104通信连接。
可能地，终端102包括控制芯片、EC芯片以及背光驱动IC。控制芯片、EC芯片以及背光驱动IC依次连接。
为便于对本实施例进行理解，首先对本公开实施例所公开的一种背光亮度值的调节方法进行详细介绍，本实施例主要以该方法应用于图1a中的终端102来举例说明，参见图2所示的一种背光亮度值的调节方法的流程示意图，该方法主要包括以下步骤S202至步骤S206：
步骤S202，获取待调节屏幕的当前屏幕亮度值。
其中，待调节屏幕可以为终端102中待调节背光亮度的LCD屏幕，屏幕亮度值的物理单位为nit(尼特)。在实际应用中，可以利用亮度测量设备测量LCD屏幕的当前屏幕亮度值。在一种实施方式中，终端与亮度测量设备之间可以通过网络进行通信，然后由亮度测量设备将测量得到的当前屏幕亮度值自动上传测量至终端，终端将得到的当前屏幕亮度值。在另一种实施方式中，服务器与亮度测量设备之间可以通过网络进行通信，由亮度测量设备将测量得到的当前屏幕亮度值上传至服务器，服务器将当前屏幕亮度值传输给终端，从而使终端从该服务器中获取当前屏幕亮度值。
在一种可能的实现方式中，终端与亮度测量设备通信连接；终端设备获取亮度测量设备测量得到的当前屏幕亮度值。
在一种可能的实现方式中，终端与服务器通信连接，服务器与亮度测量设备通信连接；终端获取服务器传输的当前屏幕亮度值；其中，服务器传输的当前屏幕亮度值为亮度测量设备测量得到的当前屏幕亮度值。
步骤S204，根据预先配置的两段式背光曲线，确定当前屏幕亮度值对应的背光电流值。
其中，两段式背光曲线包括线性区间和非线性区间，两段式背光曲线配置成表征屏幕亮度值和屏幕亮度百分比之间的第一映射关系，两段式背光曲线可通过对现有技术中纯线性的背光亮度曲线进行调整得到。在一种实施方式中，还可以对屏幕亮度百分比与背光电流值之间的第三映射关系进行配置，从而终端可以结合两段式背光曲线所表征的第一映射关系和上述第三映射关系，确定当前屏幕亮度值对应的背光电流值，其中，第三映射关系可包括多个子映射关系，诸如屏幕亮度百分比与背光等级之间的子映射关系、背光等级与PWM占空比之间的子映射关系、PWM占空比与背光电流值之间的子映射关系等。在一种具体的实施方式中，终端中设置 有控制芯片、EC芯片和背光驱动IC，终端内的控制芯片基于预先配置的两段式背光曲线中所表征的第一映射关系确定当前屏幕亮度值对应的目标屏幕亮度百分比，并计算目标屏幕亮度百分比和预设背光等级区间的上限值的乘积，得到目标屏幕亮度百分比所处的目标背光等级，即确定该目标屏幕亮度百分比所在的目标背光等级，控制芯片将目标背光等级传递至EC芯片，由EC芯片根据预先配置的背光等级与占空比之间的对应关系，确定目标背光等级对应的目标占空比，即基于目标背光等级计算PWM占空比(目标占空比)，并将目标占空比传递至背光驱动IC。再由背光驱动IC根据PWM占空比(目标占空比)确定当前屏幕亮度值对应的背光电流值，完成计算背光电流值的动作。
在一种可能的实现方式中，通过控制芯片基于预先配置的两段式背光曲线中所表征的第一映射关系，确定当前屏幕亮度值对应的目标屏幕亮度百分比；通过控制芯片计算目标屏幕亮度百分比和预设背光等级区间的上限值的乘积，得到目标屏幕亮度百分比所处的目标背光等级；通过控制芯片将目标背光等级传递至EC芯片。
在一种可能的实现方式中，通过EC芯片基于预先配置的背光等级与占空比之间的对应关系，确定目标背光等级对应的目标占空比，并将目标占空比传递至背光驱动IC；通过背光驱动IC基于目标占空比确定当前屏幕亮度值对应的背光电流值。
步骤S206，基于背光电流值调节待调节屏幕的背光亮度值。
在一种具体的实施方式中，可通过终端中的背光驱动IC基于背光电流值调节待调节屏幕的背光亮度值，用户即可体验到待调节屏幕的背光亮度值的明暗变化。
在一种可能的实现方式中，通过背光驱动IC基于背光电流值调节待调节屏幕的背光亮度值。
本公开实施例提供的上述背光亮度值的调节方法，利用包含有线性区间和非线性区间的两段式背光曲线确定当前屏幕亮度值对应的背光电流值，进而基于电流值对待调节屏幕的背光亮度进行调节，相较于现有技术中采用纯线性的背光亮度曲线调节背光亮度值，本公开实施例提供的两段式背光曲线较好的优化了屏幕亮度值与背光电流值之间的对应关系，从而降低了待调节屏幕所需的功耗，进而可以较好地缓解待调节屏幕存在整机温升指标差的问题，还可以有效提高待调节屏幕的续航时间。
本公开实施例还提供了一种两段式背光曲线的获取方式，该方式可以在执行上述步骤S204之前进行。在一种实施方式中，可以读取预先测定的初始背光曲线，然后调整初始背光曲线得到两段式背光曲线。其中，初始背光曲线配置成表征屏幕亮度值和屏幕亮度百分比之间的第二映射关系。在一些实施方式中，终端中可配置有存储芯片，配置成存储初始背光曲线，在需要对终端的待调节屏幕的背光亮度值进行调节时，控制芯片可直接从存储芯片中读取预先 测定的初始背光曲线；初始背光曲线也可存储于服务器中的指定存储区域，服务器通过网络通信将初始背光曲线发送至终端，即服务器中存储有初始背光曲线；终端获取服务器传输的初始背光曲线。以使终端的控制芯片对初始背光曲线进行调整得到所需的两段式背光曲线，即控制芯片调整初始背光曲线得到两段式背光曲线。
在一种可能的实现方式中，终端中配置有控制芯片和存储芯片，存储芯片配置成存储初始背光曲线；通过控制芯片，从存储芯片中读取预先测定的初始背光曲线；通过控制芯片调整初始背光曲线，得到两段式背光曲线。
在一种可能的实现方式中，终端中配置有控制芯片，终端与服务器通信连接，服务器中存储有初始背光曲线；获取服务器传输的初始背光曲线；通过控制芯片调整初始背光曲线得到两段式背光曲线。
具体的，本公开示例性提供了一种调整初始背光曲线得到两段式背光曲线的实施方式，参见如下步骤a至步骤c：
步骤a，将初始背光曲线划分为第一区间和第二区间。参见图3所示的一种初始背光曲线的示意图，可见初始背光曲线为纯线性曲线，另外，本公开实施例还示例性提供了一种初始背光曲线中屏幕亮度值与屏幕亮度百分比(也即，PWM％)之间的第二映射关系，如表1所示。在一种实施方式中，可将初始背光曲线中屏幕亮度百分比的0～40％作为第一区间，将屏幕亮度百分比的40％～100％作为第二区间。
表1
PWM％ 屏幕亮度值
100％ 500
90％ 450
80％ 405
70％ 356
60％ 310
50％ 260
40％ 210
30％ 155
20％ 100
10％ 50
0％ 4
步骤b，对初始背光曲线的第一区间进行非线性插值处理，得到非线性区间。在一种实施方式中，可以针对初始背光曲线中40％至0％区间，利用更为平滑的非线性作数据插值处理，得到两段式背光亮度曲线的非线性区间。
步骤c，对初始背光曲线的第二区间进行线性插值平滑处理，得到线性区间。在一种实施方式中，可以针对初始背光曲线中100％至40％区间，利用线性插值平滑处理进行处理，得 到两段式背光亮度曲线的线性区间。具体的，屏幕亮度百分比以最大屏幕亮度值250nit为上限，每2％百分比为刻度均分降低屏幕亮度值。
在具体实现时，终端按照上述步骤a至步骤c对初始背光曲线进行处理，得到如图4所示的一种两段式背光曲线的示意图，其中0～40％区间为非线性区间，40％～100％区间为线性区间，另外参见表2，用以表征两段式背光曲线中屏幕亮度值与屏幕亮度百分比之间的第一映射关系。另外，为加快调节背光亮度值的效率，由于终端的初始背光曲线通常是不变的，因此本公开实施例在基于初始背光曲线得到两段式背光曲线后，可将得到的两段式背光曲线直接存储于存储芯片内，即存储芯片配置成存储调整初始背光曲线后得到的两段式背光曲线。在后续调节终端的背光亮度值时，控制芯片可直接从存储芯片内调取该两段式背光曲线，从而在一定程度上提高调节背光亮度值的效率。在一种可能的实现方式中，通过存储芯片存储调整初始背光曲线后得到的两段式背光曲线；通过控制芯片直接调用两段式背光曲线。
表2
Figure PCTCN2021100694-appb-000001
为便于对上述步骤S204进行理解，本公开实施例提供了一种根据预先配置的两段式背光 曲线，确定当前屏幕亮度值对应的背光电流值的具体实施方式，其中，两段式背光曲线配置成表征屏幕亮度值和屏幕亮度百分比之间的第一映射关系，具体参见如下步骤1至步骤3：
步骤1，根据预先配置的两段式背光曲线，确定当前屏幕亮度值对应的目标屏幕亮度百分比。以上述表2为例，终端的控制芯片在得知待调节屏幕的当前屏幕亮度值时，可以基于表2中所示的第一映射关系查找当前屏幕亮度值对应的目标屏幕亮度百分比。例如，当前屏幕亮度值为250nit时，控制芯片通过查表确定屏幕亮度百分比为100％。
步骤2，计算目标屏幕亮度百分比在预设背光等级区间内所处的目标背光等级。其中，预设背光等级区间可以为0～255。在一种实施方式中，控制芯片可以采用ACPI(Advanced Configuration and Power Management Interface，高级配置和电源管理接口)函数确定目标屏幕亮度百分比所处的目标背光等级，具体的，在ACPI函数中的高通BLCP(backlight level CP)接口函数中，计算目标屏幕亮度百分比和预设背光等级区间的上限值的乘积，得到目标屏幕亮度百分比所处的目标背光等级。例如，屏幕亮度百分比为60％时，背光等级为255*60％＝153级。
步骤3，基于目标屏幕亮度百分比所处的目标背光等级，确定当前屏幕亮度值对应的背光电流值。在一种实施方式中，可以首先根据预先配置的背光等级与占空比之间的对应关系，确定目标背光等级对应的目标占空比，然后基于目标占空比确定当前屏幕亮度值对应的背光电流值。具体的，可以利用BLCP接口函数将目标背光等级传递给EC芯片，由EC芯片根据预先配置的背光等级与占空比之间的对应关系，确定目标背光等级对应的目标占空比，进而基于背光驱动IC根据EC芯片输出的目标占空比确定背光电流值。
为了解现有的背光亮度调节方法致使LCD存在整机温升指标差以及续航时间段等问题的因素，本公开实施例对背光功耗因子进行分析，参见图5所示的一种背光功耗因子的分析示意图，首先背光功耗影响因子主要包括软件因素和硬件因素两个方面。其中，软件因素又包括背光亮度曲线因素和CABC(Content Adaptive Brightness Control，背光动态机制)因素，背光亮度曲线因素包括用户自定义曲线和对标机曲线，CABC因素包括Disable CABC时播放视频背光耗流恒定和Enable CABC时播放视频背光耗流动态等；硬件因素又包括背光LED限流电阻设定因素和背光个体LED灯珠功率差异因素，背光LED限流电阻设定因素中电阻设定最大亮度值(例如，手机屏幕最大亮度值360nit)，背光个体LED灯珠功率差异因素需要由屏幕厂家管控定义。申请实施例提供的背光亮度的调整方法，为针对背光亮度曲线因素提出的。
为便于对上述实施例提供的背光亮度值的调节方法进行理解，本公开实施例进一步提供了另一种背光亮度值的调节方法，参见图6所示的另一种背光亮度值的调节方法的流程示意图，该方法由配置有LCD屏幕的终端执行，终端中设置有控制芯片、EC芯片和背光驱动IC，该 方法主要包括以下步骤S602至步骤S608：
步骤S602，响应针对Windows界面中背光亮度条的滑动操作，确定背光等级。在具体实现时，需要用户利用亮度测量设备测量Windows界面的当前屏幕亮度值，终端在获取测量得到的当前屏幕亮度值后，可基于两段式背光曲线确定当前屏幕亮度值对应的背光等级，进而利用ACPI函数按照上述步骤2所示的方法确定背光等级。
步骤S604，基于背光等级利用ACPI函数中的BLCP接口将PWM占空比传递给EC芯片。在一种实施方式中，可以按照如下公式计算PWM占空比：背光等级＝(N/255)^Gamma值。其中，背光等级也可称之为256灰阶；N表示PWM占空比；Gamma值表示LCD器件亮度相应特性的一个参数，Gamma值通常为常数，可由终端的厂商配置。
步骤S606，背光驱动IC基于PWM占空比调整背光电流值。
步骤S608，根据背光电流值调节背光亮度值。
综上所述，本公开实施例提供的背光亮度值的调节方法，通过两段式背光亮度曲线优化了屏幕亮度值与屏幕亮度百分比之间的映射关系，在不影响LCD器件主客观特性的前提下降低了背光功耗，从而改善了温升场景，并提高了整机整体续航指标时间。
应该理解的是，虽然图2-6的流程图中的各个步骤按照箭头的指示依次显示，但是这些步骤并不是必然按照箭头指示的顺序依次执行。除非本文中有明确的说明，这些步骤的执行并没有严格的顺序限制，这些步骤可以以其它的顺序执行。而且，图2-6中的至少一部分步骤可以包括多个子步骤或者多个阶段，这些子步骤或者阶段并不必然是在同一时刻执行完成，而是可以在不同的时刻执行，这些子步骤或者阶段的执行顺序也不必然是依次进行，而是可以与其它步骤或者其它步骤的子步骤或者阶段的至少一部分轮流或者交替地执行。
对于前述实施例提供的上述背光亮度值的调节方法，本公开实施例提供了一种背光亮度值的调节装置，参见图7所示的一种背光亮度值的调节装置的结构示意图，该装置主要包括以下部分：
亮度值获取模块702，配置成获取待调节屏幕的当前屏幕亮度值。
电流值确定模块704，配置成根据预先配置的两段式背光曲线，确定当前屏幕亮度值对应的背光电流值；其中，两段式背光曲线包括线性区域和非线性区域。
背光调整模块706，配置成基于背光电流值调节待调节屏幕的背光亮度值。
本公开实施例提供的上述背光亮度值的调节装置，利用包含有线性区间和非线性区间的两段式背光曲线确定当前屏幕亮度值对应的背光电流值，进而基于电流值对待调节屏幕的背光亮度进行调节，相较于现有技术中采用纯线性的背光亮度曲线调节背光亮度值，本公开实施例提供的两段式背光曲线较好的优化了屏幕亮度值与背光电流值之间的对应关系，从而降低了待调 节屏幕所需的功耗，进而可以较好地缓解待调节屏幕存在整机温升指标差的问题，还可以有效提高待调节屏幕的续航时间。
在一种实施方式中，两段式背光曲线包括屏幕亮度值和屏幕亮度百分比之间的第一映射关系；电流值确定模块704还配置成：根据预先配置的两段式背光曲线，确定当前屏幕亮度值对应的目标屏幕亮度百分比；计算目标屏幕亮度百分比在预设背光等级区间内所处的目标背光等级；基于目标屏幕亮度百分比所处的目标背光等级，确定当前屏幕亮度值对应的背光电流值。
在一种实施方式中，电流值确定模块704还配置成：计算目标屏幕亮度百分比和预设背光等级区间的上限值的乘积，得到目标屏幕亮度百分比所处的目标背光等级。
在一种实施方式中，电流值确定模块704还配置成：根据预先配置的背光等级与占空比之间的对应关系，确定目标背光等级对应的目标占空比；基于目标占空比确定当前屏幕亮度值对应的背光电流值。
在一种实施方式中，上述装置还包括曲线调整模块，配置成：读取预先测定的初始背光曲线；其中，初始背光曲线配置成表征屏幕亮度值和屏幕亮度百分比之间的第二映射关系；调整初始背光曲线得到两段式背光曲线。
在一种实施方式中，曲线调整模块还配置成：将初始背光曲线划分为第一区间和第二区间；对初始背光曲线的第一区间进行非线性插值处理，得到非线性区间；对初始背光曲线的第二区间进行线性插值平滑处理，得到线性区间。
本公开实施例所提供的装置，其实现原理及产生的技术效果和前述方法实施例相同，为简要描述，装置实施例部分未提及之处，可参考前述方法实施例中相应内容。
本公开实施例提供了一种电子设备，电子设备可以为计算机设备。具体的，该电子设备包括处理器和一个或多个存储器；存储器中存储有计算机可读指令，计算机可读指令被处理器执行时，使得一个或多个处理器执行上述实施方式中的任意一项所述的方法。
本公开实施例还提供了一个或多个存储有计算机可读指令的非易失性计算机可读存储介质，计算机可读指令被一个或多个处理器执行时，使得一个或多个处理器执行实现上述实施方式中的任意一项所述的方法的步骤。
图8为本公开实施例提供的一种电子设备的结构示意图，该电子设备100包括：处理器80，存储器81，总线82和通信接口83，处理器80、通信接口83和存储器81通过总线82进行连接；处理器80配置成执行存储器81中存储的可执行模块，例如计算机可读指令。
其中，存储器81可能包含高速随机存取存储器(RAM，Random Access Memory)，也可能还包括非不稳定的存储器(non-volatile memory)，例如至少一个磁盘存储器。通过至少一个通信接口83(可以是有线或者无线)实现该系统网元与至少一个其他网元之间的通信连接， 可以使用互联网，广域网，本地网，城域网等。其中，本公开所提供的各实施例中所使用的对存储器、存储、数据库或其它介质的任何引用，均可包括非易失性和/或易失性存储器。非易失性存储器可包括只读存储器(ROM)、可编程ROM(PROM)、电可编程ROM(EPROM)、电可擦除可编程ROM(EEPROM)或闪存。易失性存储器可包括随机存取存储器(RAM)或者外部高速缓冲存储器。作为说明而非局限，RAM以多种形式可得，诸如静态RAM(SRAM)、动态RAM(DRAM)、同步DRAM(SDRAM)、双数据率SDRAM(DDRSDRAM)、增强型SDRAM(ESDRAM)、同步链路(Synchlink)DRAM(SLDRAM)、存储器总线(Rambus)直接RAM(RDRAM)、直接存储器总线动态RAM(DRDRAM)以及存储器总线动态RAM(RDRAM)等。
总线82可以是ISA总线、PCI总线或EISA总线等。所述总线可以分为地址总线、数据总线或控制总线等。为便于表示，图8中仅用一个双向箭头表示，但并不表示仅有一根总线或一种类型的总线。
其中，存储器81配置成存储程序，处理器80在接收到执行指令后，执行所述程序，前述本公开实施例任一实施例揭示的装置所执行的方法可以应用于处理器80中，或者由处理器80实现。
处理器80可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过处理器80中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器80可以是通用处理器，包括中央处理器(Central Processing Unit，简称CPU)、网络处理器(Network Processor，简称NP)等；还可以是数字信号处理器(Digital Signal Processing，简称DSP)、专用集成电路(Application Specific Integrated Circuit，简称ASIC)、现成可编程门阵列(Field-Programmable Gate Array，简称FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件或分立硬件组件。可以实现或者执行本公开实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本公开实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存或只读存储器，可编程只读存储器或者电可擦写可编程存储器或寄存器等本领域成熟的存储介质中。该存储介质位于存储器81，处理器80读取存储器81中的信息，结合其硬件完成上述方法的步骤。
本公开实施例所提供的可读存储介质的计算机可读指令产品，包括存储了程序代码的计算机可读存储介质，所述程序代码包括的指令可配置成执行前面方法实施例中所述的方法，具体实现可参见前述方法实施例，在此不再赘述。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一 个计算机可读取存储介质中。基于这样的理解，本公开的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本公开各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
最后应说明的是：以上所述实施例，仅为本公开的具体实施方式，用以说明本公开的技术方案，而非对其限制，本公开的保护范围并不局限于此，尽管参照前述实施例对本公开进行了详细的说明，本领域的普通技术人员应当理解：任何熟悉本技术领域的技术人员在本公开揭露的技术范围内，其依然可以对前述实施例所记载的技术方案进行修改或可轻易想到变化，或者对其中部分技术特征进行等同替换；而这些修改、变化或者替换，并不使相应技术方案的本质脱离本公开实施例技术方案的精神和范围，都应涵盖在本公开的保护范围之内。因此，本公开的保护范围应所述以权利要求的保护范围为准。
工业实用性
首先获取待调节屏幕的当前屏幕亮度值，并根据预先配置的两段式背光曲线(包括线性区间和非线性区间)，确定当前屏幕亮度值对应的背光电流值，然后基于背光电流值调节待调节屏幕的背光亮度值。上述方式利用包含有线性区间和非线性区间的两段式背光曲线确定当前屏幕亮度值对应的背光电流值，进而基于电流值对待调节屏幕的背光亮度进行调节。相较于现有技术中采用纯线性的背光亮度曲线调节背光亮度值，本发明申请实施例提供的两段式背光曲线较好的优化了屏幕亮度值与背光电流值之间的对应关系，从而降低了待调节屏幕所需的功耗，进而可以较好地缓解待调节屏幕存在整机温升指标差的问题，还可以有效提高待调节屏幕的续航时间。

Claims (18)

  1. 一种背光亮度值的调节方法，其特征在于，包括：
    获取待调节屏幕的当前屏幕亮度值；
    根据预先配置的两段式背光曲线，确定所述当前屏幕亮度值对应的目标屏幕亮度百分比；
    计算所述目标屏幕亮度百分比和预设背光等级区间的上限值的乘积，得到所述目标屏幕亮度百分比所处的目标背光等级；
    基于所述目标屏幕亮度百分比所处的目标背光等级，确定所述当前屏幕亮度值对应的背光电流值；
    基于所述背光电流值调节所述待调节屏幕的背光亮度值。
  2. 根据权利要求1所述的方法，其特征在于，所述两段式背光曲线配置成表征屏幕亮度值和屏幕亮度百分比之间的第一映射关系。
  3. 根据权利要求2所述的方法，其特征在于，终端中设置有控制芯片和EC芯片；
    通过所述控制芯片基于预先配置的两段式背光曲线中所表征的第一映射关系，确定所述当前屏幕亮度值对应的目标屏幕亮度百分比；
    通过所述控制芯片计算所述目标屏幕亮度百分比和预设背光等级区间的上限值的乘积，得到所述目标屏幕亮度百分比所处的目标背光等级；
    通过所述控制芯片将目标背光等级传递至所述EC芯片。
  4. 根据权利要求1所述的方法，其特征在于，所述基于所述目标屏幕亮度百分比所处的目标背光等级，确定所述当前屏幕亮度值对应的背光电流值的步骤，包括：
    根据预先配置的背光等级与占空比之间的对应关系，确定所述目标背光等级对应的目标占空比；
    基于所述目标占空比确定所述当前屏幕亮度值对应的背光电流值。
  5. 根据权利要求4所述的方法，其特征在于，终端中设置有EC芯片和背光驱动IC；
    通过所述EC芯片基于预先配置的背光等级与占空比之间的对应关系，确定所述目标背光等级对应的目标占空比，并将目标占空比传递至所述背光驱动IC；
    通过所述背光驱动IC基于所述目标占空比确定所述当前屏幕亮度值对应的背光电流值。
  6. 根据权利要求5所述的方法，其特征在于，通过所述背光驱动IC基于所述背光电流值调节所述待调节屏幕的背光亮度值。
  7. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    读取预先测定的初始背光曲线；其中，所述初始背光曲线配置成表征屏幕亮度值和屏幕亮度百分比之间的第二映射关系；
    调整所述初始背光曲线得到所述两段式背光曲线。
  8. 根据权利要求7所述的方法，其特征在于，其中，所述两段式背光曲线包括线性区间和非线性区间；所述调整所述初始背光曲线得到所述两段式背光曲线的步骤，包括：
    将所述初始背光曲线划分为第一区间和第二区间；
    对所述初始背光曲线的第一区间进行非线性插值处理，得到所述非线性区间；
    对所述初始背光曲线的第二区间进行线性插值平滑处理，得到所述线性区间。
  9. 根据权利要求8所述的方法，其特征在于，将所述屏幕亮度百分比的0～40％作为第一区间，40％～100％作为第二区间。
  10. 根据权利要求7-9中任意一项所述的方法，其特征在于，终端中配置有控制芯片和存储芯片，所述存储芯片配置成存储初始背光曲线；
    通过所述控制芯片，从所述存储芯片中读取预先测定的初始背光曲线；
    通过所述控制芯片调整所述初始背光曲线，得到所述两段式背光曲线。
  11. 根据权利要求10所述的方法，其特征在于，通过所述存储芯片存储调整所述初始背光曲线后得到的所述两段式背光曲线；
    通过所述控制芯片直接调用所述两段式背光曲线。
  12. 根据权利要求7-9中任意一项所述的方法，其特征在于，终端中配置有控制芯片，所述终端与服务器通信连接，所述服务器中存储有初始背光曲线；
    获取所述服务器传输的所述初始背光曲线；
    通过所述控制芯片调整所述初始背光曲线得到所述两段式背光曲线。
  13. 根据权利要求1所述的方法，其特征在于，终端与亮度测量设备通信连接；
    获取所述亮度测量设备测量得到的所述当前屏幕亮度值。
  14. 根据权利要求1所述的方法，其特征在于，终端与服务器通信连接，所述服务器与亮度测量设备通信连接；
    获取所述服务器传输的当前屏幕亮度值；
    其中，所述服务器传输的当前屏幕亮度值为所述亮度测量设备测量得到的当前屏幕亮度值。
  15. 一种背光亮度值的调节装置，其特征在于，包括：
    亮度值获取模块，配置成获取待调节屏幕的当前屏幕亮度值；
    电流值确定模块，配置成根据预先配置的两段式背光曲线，确定所述当前屏幕亮度值对应的目标屏幕亮度百分比；计算所述目标屏幕亮度百分比和预设背光等级区间的上限值的乘积，得到所述目标屏幕亮度百分比所处的目标背光等级；基于所述目标屏幕亮度百分比所处的目标背光等级，确定所述当前屏幕亮度值对应的背光电流值；
    背光调整模块，配置成基于所述背光电流值调节所述待调节屏幕的背光亮度值。
  16. 根据权利要求15所述的装置，其特征在于，所述两段式背光曲线包括屏幕亮度值和屏幕亮度百分比之间的第一映射关系。
  17. 一种电子设备，其特征在于，包括存储器及一个或多个处理器，所述存储器中储存有计算机可读指令，所述计算机可读指令被所述一个或多个处理器执行时，使得所述一个或多个处理器执行如权利要求1至14任一项所述的方法的步骤。
  18. 一个或多个存储有计算机可读指令的非易失性计算机可读存储介质，其特征在于，所述计算机可读指令被一个或多个处理器执行时，使得所述一个或多个处理器执行实现权利要求1至14中任一项所述的方法的步骤。
PCT/CN2021/100694 2020-06-18 2021-06-17 背光亮度值的调节方法、装置、电子设备和存储介质 WO2021254455A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010563567.5A CN111681614B (zh) 2020-06-18 2020-06-18 背光亮度值的调节方法、装置、电子设备和存储介质
CN202010563567.5 2020-06-18

Publications (1)

Publication Number Publication Date
WO2021254455A1 true WO2021254455A1 (zh) 2021-12-23

Family

ID=72436694

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/100694 WO2021254455A1 (zh) 2020-06-18 2021-06-17 背光亮度值的调节方法、装置、电子设备和存储介质

Country Status (2)

Country Link
CN (1) CN111681614B (zh)
WO (1) WO2021254455A1 (zh)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111681614B (zh) * 2020-06-18 2021-09-14 上海闻泰电子科技有限公司 背光亮度值的调节方法、装置、电子设备和存储介质
CN112382245A (zh) * 2020-11-20 2021-02-19 深圳市创智成科技股份有限公司 一种背光调节方法、装置、系统和存储介质
CN112667188A (zh) * 2020-12-28 2021-04-16 长沙湘计海盾科技有限公司 一种显示器亮度控制方法，装置，系统，电子终端及可读存储介质
CN113129847B (zh) * 2021-04-13 2022-07-12 Tcl华星光电技术有限公司 背光亮度控制方法、装置及显示设备
CN113260110B (zh) * 2021-04-28 2023-03-24 广州彩熠灯光股份有限公司 亮度控制方法、装置、设备及存储介质

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060209005A1 (en) * 2005-03-02 2006-09-21 Massoud Pedram Dynamic backlight scaling for power minimization in a backlit TFT-LCD
CN101645231A (zh) * 2009-04-02 2010-02-10 青岛海信电器股份有限公司 一种显示器的背光亮度调整方法和装置
CN102248922A (zh) * 2011-03-09 2011-11-23 奇瑞汽车股份有限公司 一种汽车背光控制系统及其控制方法
CN105427815A (zh) * 2016-01-12 2016-03-23 浙江德景电子科技有限公司 一种调整背光亮度的方法和装置
CN106448578A (zh) * 2016-12-22 2017-02-22 广东欧珀移动通信有限公司 显示屏背光控制方法、装置和计算机设备
CN109859721A (zh) * 2019-04-02 2019-06-07 Oppo广东移动通信有限公司 显示屏亮度调节方法、装置、移动终端以及存储介质
CN110599967A (zh) * 2019-09-19 2019-12-20 深圳市万普拉斯科技有限公司 图像显示方法、装置、电子设备及可读存储介质
CN111681614A (zh) * 2020-06-18 2020-09-18 上海闻泰电子科技有限公司 背光亮度值的调节方法、装置、电子设备和存储介质

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101295467B (zh) * 2007-04-29 2011-06-01 瑞昱半导体股份有限公司 对比控制装置及其控制方法
KR101320018B1 (ko) * 2007-12-04 2013-10-18 삼성디스플레이 주식회사 광원 모듈과 이의 구동 방법 및 이를 포함하는 표시 장치
CN102930850B (zh) * 2012-11-16 2015-07-15 Tcl显示科技（惠州）有限公司 Gamma曲线调试方法和系统

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060209005A1 (en) * 2005-03-02 2006-09-21 Massoud Pedram Dynamic backlight scaling for power minimization in a backlit TFT-LCD
CN101645231A (zh) * 2009-04-02 2010-02-10 青岛海信电器股份有限公司 一种显示器的背光亮度调整方法和装置
CN102248922A (zh) * 2011-03-09 2011-11-23 奇瑞汽车股份有限公司 一种汽车背光控制系统及其控制方法
CN105427815A (zh) * 2016-01-12 2016-03-23 浙江德景电子科技有限公司 一种调整背光亮度的方法和装置
CN106448578A (zh) * 2016-12-22 2017-02-22 广东欧珀移动通信有限公司 显示屏背光控制方法、装置和计算机设备
CN109859721A (zh) * 2019-04-02 2019-06-07 Oppo广东移动通信有限公司 显示屏亮度调节方法、装置、移动终端以及存储介质
CN110599967A (zh) * 2019-09-19 2019-12-20 深圳市万普拉斯科技有限公司 图像显示方法、装置、电子设备及可读存储介质
CN111681614A (zh) * 2020-06-18 2020-09-18 上海闻泰电子科技有限公司 背光亮度值的调节方法、装置、电子设备和存储介质

Also Published As

Publication number Publication date
CN111681614A (zh) 2020-09-18
CN111681614B (zh) 2021-09-14

Similar Documents

Publication Publication Date Title
WO2021254455A1 (zh) 背光亮度值的调节方法、装置、电子设备和存储介质
US10430239B2 (en) Method and system for predicting task completion of a time period based on task completion rates of prior time periods using machine learning
US20190103062A1 (en) Method and apparatus for compensating for brightness of display device
WO2020191707A1 (zh) 一种显示图像的方法、装置
WO2023147727A1 (zh) 功耗调节方法、装置、存储设备及非易失性可读存储介质
CN104412261B (zh) 用户界面内容个性化系统
US9329663B2 (en) Processor power and performance manager
US20170115725A1 (en) Current sense accuracy improvement for mosfet rds (on) sense based voltage regulator by adaptive temperature compensation
US9710053B2 (en) Mechanism for facilitating power extension service at computing devices by one or more power saving techniques
CN110489622B (zh) 对象信息的分享方法、装置、计算机设备和存储介质
CN103109306B (zh) 用于低功率架构的亮度增强方法、系统和设备
CN110413475B (zh) 一种校正服务器功耗测量值的方法和装置
CN106462374B (zh) 电子设备和控制其输出特性的方法
US11669762B2 (en) Apparatus and method for forecasted performance level adjustment and modification
CN110928587A (zh) 控制方法和控制装置
WO2019024204A1 (zh) 一种温度采集方法、终端及存储介质
WO2019019753A1 (zh) 提供健康报告的判断方法、装置、计算机设备和存储介质
CN114635868B (zh) 散热风扇转速控制方法、装置、计算机设备和存储介质
WO2020103027A1 (zh) 网络功耗调整方法、网络功耗调整装置及移动终端
US20150170346A1 (en) Image Compensation Value Computation
TWI694463B (zh) 資料儲存設備及其資料預測方法
CN113311926A (zh) 风扇调速方法和装置、电子设备、计算机可读存储介质
WO2021254526A1 (zh) 一种内存的工作频率调整方法、智能终端及存储介质
Hong et al. LGC-DVS: Local gamma correction-based dynamic voltage scaling for android smartphones with AMOLED displays
US9261098B2 (en) Fan speed and memory regulator control based on memory margin

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21825816

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21825816

Country of ref document: EP

Kind code of ref document: A1