WO2019201021A1 - 一种电子设备的显示屏背光亮度控制方法和电子设备 - Google Patents

一种电子设备的显示屏背光亮度控制方法和电子设备 Download PDF

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Publication number
WO2019201021A1
WO2019201021A1 PCT/CN2019/076938 CN2019076938W WO2019201021A1 WO 2019201021 A1 WO2019201021 A1 WO 2019201021A1 CN 2019076938 W CN2019076938 W CN 2019076938W WO 2019201021 A1 WO2019201021 A1 WO 2019201021A1
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Prior art keywords
display
backlight brightness
display screen
electronic device
screen
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PCT/CN2019/076938
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English (en)
French (fr)
Inventor
王剑平
杨定洲
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中兴通讯股份有限公司
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Publication of WO2019201021A1 publication Critical patent/WO2019201021A1/zh

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • G09G3/3413—Details of control of colour illumination sources
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • 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
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/14—Display of multiple viewports

Definitions

  • the present invention relates to a multi-display technology, and more particularly to a display backlight brightness control method for an electronic device, an electronic device, and a computer readable storage medium.
  • embodiments of the present invention provide a display backlight brightness control method for an electronic device, an electronic device, and a computer readable storage medium, which can automatically adjust the backlight brightness of each display screen to the same value, and satisfy End user needs.
  • the embodiment of the present invention discloses a display backlight brightness control method for an electronic device, where the electronic device includes N display screens, and N is greater than 1. a natural number; the method includes: determining display content of each display screen; determining backlight brightness of each display screen according to display content of each display screen; at least two of the N display screens have different backlight brightness In the display screen, the backlight brightness of at least one of the N display screens is adjusted so that the backlight brightness of the N display screens is the same.
  • An embodiment of the present invention further discloses an electronic device, where the electronic device includes a memory, a processor, and N display screens, where N is a natural number greater than 1; wherein the memory is used to store a computer program; Performing a computer program stored in the memory to: determine a display content of each display screen; determine a backlight brightness of each display screen according to a display content of each display screen; the N display screens When there are at least two display screens with different backlight brightness, the backlight brightness of at least one of the N display screens is adjusted so that the backlight brightness of the N display screens is the same.
  • the embodiment of the invention further discloses a computer readable storage medium, wherein the computer program is stored thereon, and the computer program is executed by the processor to implement the steps of the display screen backlight brightness control method of any one of the above electronic devices.
  • an embodiment of the present invention further provides a computer program product, the computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions When the program instructions are executed by a computer, the computer is caused to perform the methods described in the various aspects above.
  • FIG. 1 is a schematic diagram of a hardware structure of an electronic device according to an embodiment of the present invention.
  • FIG. 2 is a flowchart 1 of a method for controlling brightness of a display screen backlight of an electronic device according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of implementing backlight brightness control of a display screen of a dual-screen electronic device according to an embodiment of the present invention
  • FIG. 4 is a second flowchart of a backlight backlight brightness control method for an electronic device according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of another hardware structure of an electronic device according to an embodiment of the present invention.
  • the electronic device can be a fixed terminal such as a computer, or a mobile terminal such as a mobile phone, a tablet computer, or a notebook computer; the display screen can be provided by using a backlight.
  • the display screen of the light source may be, for example, a liquid crystal display (LCD), an LED (Light Emitting Diode) display, or the like.
  • FIG. 1 is a schematic diagram of a hardware structure of an electronic device according to an embodiment of the present invention.
  • the electronic device may include a first display screen 101 to an Nth display screen 102, and the electronic device may further include a central processing unit (Central). Processing Unit (CPU) 103, first memory 104, sensor 105, and other peripherals 106, and the like.
  • CPU Central
  • CPU central processing unit
  • the first memory 104 may be a volatile memory, such as a random access memory (RAM), or a non-volatile memory, such as only Read-Only Memory (ROM), flash memory, Hard Disk Drive (HDD) or Solid-State Drive (SSD); or a combination of the above types of memory, and to the CPU Provide instructions and data.
  • RAM random access memory
  • ROM Read-Only Memory
  • HDD Hard Disk Drive
  • SSD Solid-State Drive
  • the type of the sensor 105 is not limited.
  • the sensor 105 may be a temperature sensor, a distance sensor, an acceleration sensor, etc.
  • other peripheral devices may be peripheral devices such as a keyboard and a USB flash drive.
  • the CPU can read the data in the memory or write the data to the memory; the CPU can also control the working state of the display, sensor or other peripherals.
  • a first embodiment of the present invention describes a method for controlling brightness of a display screen backlight of an electronic device, which may include N display screens connected to each other by a connecting member, where N is a natural number greater than 1; obviously, when N is equal to 2
  • the electronic device may be a dual-screen electronic device.
  • N is greater than 2
  • the electronic device is an electronic device having two display screens or more; that is, the embodiment of the present invention is not only suitable for dual-screen electronic devices, but also suitable for two display devices. The above electronic devices.
  • Step 201 determining display content of each display screen; in actual application, processing When controlling each display, it can read the display content data of each display to determine the display content of each display; in one example, in the electronic device using CABC function, set by the content analyzer circuit
  • the content analyzer circuit can read and analyze the display content of each display screen, and the content analyzer circuit can be implemented in one chip or can be stored in the processor in the form of a program.
  • Step 202 Determine the backlight brightness of each display screen according to the display content of each display screen.
  • an implementation manner of this step may be: acquiring an input backlight brightness value of each display screen, where each Input backlight brightness values of the display screens include backlight brightness values input to each display screen of the electronic device, or backlight brightness values of each display screen determined according to the ambient light intensity of the electronic device; Display content, correct the input backlight brightness value of each display to get the backlight brightness of each display.
  • the input backlight brightness values of the display screen may be the same or different; in one example, the input backlight brightness values of the respective display screens are parameters directly input by the end user, and at this time, the input backlight brightness values of the respective display screens may be The same or different; in another example, the input backlight brightness values of the respective display screens are determined by the ambient light intensity of the electronic device. If the same algorithm is used to determine the input backlight brightness values of the respective display screens, then each The input backlight brightness value of the display is the same.
  • the ambient light intensity of an electronic device can be acquired by an ambient light sensor.
  • another implementation manner of this step may be: determining the backlight brightness of each display screen according to the display content of each display screen and using the CABC method.
  • CABC is a dynamic screen backlight brightness control method. This technology can adjust the relationship between the grayscale value of the image and the brightness of the screen backlight according to the image content displayed on the screen, and effectively reduce the brightness of the screen backlight while substantially maintaining The display of the image.
  • the mode of the CABC corresponding to each display screen may be determined according to the type of display content of each display screen; here, the type of the display content may be a UI picture, a still image, a moving image, or the like.
  • CABC modes corresponding to the respective display screens may be the same or different; in one example, for the dual-screen electronic device, when both display screens display pictures, the two display screens correspond to CABC The modes are all in STILL mode; in another example, for a dual-screen electronic device, one display shows a still picture and the other display video, then the CABC mode corresponding to one display is STILL mode, and the other display The corresponding CABC mode is MOVIE mode.
  • the method may include: obtaining the input backlight brightness value of each display screen, and inputting the backlight brightness value of each display screen.
  • the backlight brightness value of each display screen input to each display of the electronic device or the backlight brightness value of each display screen according to the ambient light intensity of the electronic device; according to the display content of each display screen, and each display by the CABC method
  • the input backlight brightness value of the screen is corrected to obtain the backlight brightness of each display.
  • the input backlights of the N display screens have the same brightness value; it can be understood that if the input backlight brightness values of the N display screens are the same, but the display contents of the N display screens are different, according to the CABC method.
  • the resulting backlight brightness of the N display screens may be different; thus, in order to make the backlight brightness of each display screen the same, it is necessary to adjust the backlight brightness of at least one display screen according to the CABC method.
  • this step may be implemented by a processor or the like; in another example, the electronic device may include a driving chip of each display screen and a backlight chip of each display screen, wherein the driving chip of each display screen may acquire each The display content of the display screen and the input backlight brightness value of each display screen, and the CABC method is used to determine the backlight brightness of each display screen; the driving chip of each display screen can also send the backlight brightness of the corresponding display screen to the corresponding backlight.
  • the driver chip of each display screen can transmit backlight brightness to the backlight chip through a Pulse Width Modulation (PWM) signal.
  • PWM Pulse Width Modulation
  • the PWM signal duty ratio can be used to indicate the brightness of the transmitted backlight;
  • the driving chip of each display screen can directly transmit the PWM waveform to the PWM adjusting pin of the backlight chip, thereby adjusting the backlight brightness of the corresponding display screen, and realizing the power consumption control of the backlight.
  • the backlight chip of each display screen can drive the corresponding backlight to emit light according to the received signal.
  • Step 203 When there are at least two display screens with different backlight brightness in the N display screens, adjust the backlight brightness of at least one of the N display screens to make the backlights of the N display screens The brightness is the same.
  • the input backlight brightness value of the at least one display screen may be adjusted to obtain the at least one display Adjusting the input backlight brightness value of the screen; correcting the adjusted input backlight brightness value of the at least one display screen according to the display content of the at least one display screen to obtain the adjusted at least one display screen Backlight brightness.
  • the backlight brightness of the display screen is adjusted; it can be understood that, according to the content described above, after adjusting the input backlight brightness value of the display screen, The brightness of the backlight of the display changes. At this time, the PWM signal generated by the backlight chip changes accordingly.
  • the adjustment range of the input backlight brightness value of the display screen is determined according to the backlight brightness of the adjusted N display screens, that is, it is necessary to ensure that the backlight brightness of the N display screens is the same after the input backlight brightness value of the display screen is adjusted.
  • the adjusted input backlight brightness value of the at least one display screen may be modified. Yes: The adjusted input backlight brightness value of the at least one display screen is corrected by CABC.
  • the method for correcting the input backlight brightness value by using the CABC method may be: determining a correction ratio value according to the display content, the correction ratio value Between 0 and 1; then, the input backlight brightness value can be multiplied by the corrected scale value to get the backlight brightness of the display; when it is necessary to adjust the backlight brightness of the display to the backlight brightness value of the other display, due to a period of The display content of the display remains unchanged during the time, so the correction ratio value corresponding to the display remains unchanged, according to the correction ratio value corresponding to the display screen and the backlight brightness value of the display screen that needs to be obtained after adjustment (ie, the other one The backlight brightness value of the display is at), and the adjusted input backlight brightness value of the display is calculated.
  • the backlight brightness of the first display screen is A.
  • the backlight brightness of the first display screen needs to be adjusted to the backlight brightness B of the second display screen, firstly according to the initial input backlight brightness value of the first display screen.
  • two display screens of the dual screen electronic device can be respectively recorded as a first display screen and a second display screen; initially, the first display screen and the second display screen
  • the input backlight brightness values of the screen are the same, both are 160; the first display and the second display display different contents, and the backlight brightness of the first display screen according to the CABC function is 140, according to the CABC function.
  • the backlight brightness of the two display screens is 150; since the backlight brightness of the two display screens is different according to the CABC function, the input backlight brightness values of the first display screen and/or the second display screen can be adjusted at this time, so that The brightness of the backlights of the two displays according to the CABC function is the same.
  • At least one of the N display screens described above is: a display screen other than the display screen with the lowest backlight brightness among the N display screens, that is, if at least two of the N display screens exist A display with different backlight brightness, only lowers the backlight brightness of the other displays other than the display with the lowest backlight brightness in the N display screens, so that the backlight brightness of the N display screens is equal to the backlight before adjustment
  • the backlight brightness of the display with the lowest brightness it can be seen that when the backlight brightness adjustment mode is adopted, since only the backlight brightness of the display screen is lowered, the power consumption of the display can be effectively reduced.
  • this step may be implemented by a processor or the like; in another example, this step may be implemented by using the driving chip of each display screen described above and the backlight chip of each display screen.
  • the display driver chip of the intelligent terminal on the market supports the CABC function.
  • the existing CABC function supports four modes, namely, OFF mode, UI mode, STILL mode, and MOVING mode, respectively, and different CABC values are set corresponding to the registers;
  • the OFF mode means that the CABC function is turned off, and its corresponding CABC value is 0;
  • the UI mode is adapted to the display of the user interface, and the power consumption when displaying the user interface (UI) picture is optimized, and the picture quality is guaranteed as much as possible. It saves 10% ⁇ 15% power consumption, and its corresponding CABC value is 1.
  • the STILL mode is suitable for the display of static images and optimizes the power consumption when displaying still pictures. In this mode, the picture quality loss is within an acceptable range.
  • MOVIE mode is suitable for dynamic image display optimization to display power consumption when dynamic pictures, this mode will minimize power consumption, but will bring Partial loss of picture quality can save 30%+ power consumption, and its corresponding CABC value is 3.
  • the CABC mode of multiple display screens can be set to the same CABC mode, for example, for a smart terminal device with dual display screens, the CABC values of the two display screens Both are 2, that is, the CABC mode of both displays is STILL mode.
  • the backlight brightness of each display may be different, and the end user's requirement for the backlight brightness of each display is generally the same, thus, the above display backlight brightness control scheme Can not meet the needs of users.
  • the display screens may be The backlight brightness of at least one display is adjusted so that the backlight brightness of the N display screens is the same; thus, the backlight brightness of each display screen can be automatically adjusted to the same value, which satisfies the user's requirement for the brightness consistency of the display backlight.
  • a dual-screen electronic device is taken as an example to illustrate an implementation manner of a display backlight brightness control method.
  • FIG. 3 is a schematic structural diagram of implementing backlight brightness control of a dual-screen electronic device according to an embodiment of the present invention. As shown in FIG. 3, two display screens of a dual-screen electronic device are respectively recorded as a primary screen and a secondary screen, and FIG.
  • the illustrated structure may include a main screen driving chip 301, a sub-screen driving chip 302, a main screen backlight chip 303, a sub-screen backlight chip 304, a first LED backlight 305 and a second LED backlight 306; wherein the main screen driving chip 301 and the sub-screen The driving chip 302 respectively obtains the input backlight brightness values; the main screen driving chip can obtain the main screen display content, and corrects the input backlight brightness value by using the CABC method to obtain the backlight brightness of the main screen, and the backlight brightness of the main screen is occupied by the PWM signal.
  • the ratio is sent to the main screen backlight chip; the sub-screen driver chip can obtain the sub-screen display content, and the CABC mode is used to correct the input backlight brightness value to obtain the backlight brightness of the sub-screen, and the backlight brightness of the sub-screen is passed through the PWM signal.
  • the aspect ratio is sent to the secondary screen backlight chip; the main screen backlight chip 303 can drive the first LED backlighting device according to the received signal.
  • the first LED backlight panel backlight can be based;
  • the sub-panel has a backlight 304 can move the second chip LED backlight operates according to the received signal, where the second backlight LED backlight may be provided for the secondary display.
  • the main screen driving chip can transmit data to the main screen backlight chip by means of wireless digital control signals; the sub screen driving chip can send data to the sub screen backlight chip by means of wireless digital control signals; in a specific example, the main screen The backlight chip can be a TPS61165, and the secondary backlight chip can be packaged with a Power Management IC (PMIC).
  • PMIC Power Management IC
  • the input backlight brightness values of the main screen and the sub screen are the same. It can be seen that when the display contents of the main screen and the sub screen are different, the backlight brightness of the main screen and the sub screen according to the CABC method are different (main screen driving chip) There is a difference in the duty cycle of the PWM signal outputted by the sub-screen driver chip, which in turn affects the user experience.
  • the PWM signal duty ratio outputted by the main screen driving chip and the sub-screen driving chip can be respectively read, and the PWM signal with high duty ratio can be driven by the corresponding backlight chip to drive the LED backlight to emit a backlight with higher brightness.
  • the PWM signal with low duty cycle can be driven by the corresponding backlight chip to drive the LED backlight to emit a backlight with lower brightness; therefore, the input backlight brightness value of one of the display screens can be adjusted, so that the backlight brightness of the main screen and the sub screen are achieved.
  • the method for adjusting the input backlight brightness value of the display screen has been described in the first embodiment of the present invention, and details are not described herein again.
  • the input backlight brightness value of the display screen corresponding to the PWM signal of the duty cycle can be lowered, which can reduce the power consumption of the display of the electronic device.
  • Step 401 Acquire a CABC value of each display screen and an input backlight brightness value.
  • the CABC value of the main screen and the CABC value of the secondary screen are both 2, that is, the CABC modes of the main screen and the secondary screen are both STILL mode.
  • the input backlights of the main screen and the secondary screen have the same brightness value, both of which are Bx.
  • Step 402 Read the duty cycle Xa of the PWM signal obtained by the main screen according to the CABC mode, and the duty ratio Xb of the PWM signal obtained by the secondary screen according to the CABC mode.
  • Step 403 Determine whether Xa is greater than or equal to Xb. If yes, go to step 404. If no, go to step 405.
  • Step 404 Adjust the input backlight brightness value of the main screen to (Xb/Xa)*Bx.
  • Step 405 Adjust the input backlight brightness value of the secondary screen to (Xa/Xb)*Bx.
  • the input backlight brightness values of the main screen and the sub screen are both 255.
  • the backlight brightness of the main screen according to the CABC method is 240 (actually represented by the duty cycle of the PWM signal), according to CABC
  • the secondary screen has a backlight brightness of 250.
  • the input backlight brightness value of the secondary screen can be corrected, and the input backlight brightness value of the secondary screen is corrected to 240*(255/250), thus, the secondary screen
  • the backlight brightness of the secondary screen obtained according to the CABC method is the same as the backlight brightness of the main screen obtained according to the CABC method, and is 240.
  • the input backlight brightness value of the display screen can be adjusted by a feedback algorithm, and the PWM signal of the value to each backlight chip is obtained.
  • the duty cycle is consistent, which eliminates the effects of inconsistent backlight brightness on the various displays brought by CABC.
  • the display content of each display screen may be first determined; then, the type of display content of each display screen is determined; when the display content of at least two of the N display screens is not At the same time, for the display screen displaying different types of display content, different CABC modes are used to control the backlight brightness.
  • the display content type of the display screen may include a UI interface, a still image, a moving image, and the like.
  • different CABC values may be used when the display content types of the main screen and the secondary screen of the dual-screen electronic device are different for different application scenarios; when the dual-screen electronic device is in the child mode, a video such as an animation may be displayed on the main screen. Content to attract the line of sight of the child being photographed; at the same time, the shooting preview interface is displayed on the secondary screen; at this time, since the display content of the main screen is not directly viewed by the end user, the CABC mode of the main screen can be set to the MOVIE mode, and the secondary screen is The CABC mode is set to STILL mode.
  • the virtual button when the dual-screen electronic device is in the game mode, the virtual button may be displayed on the main screen, and the game interface may be displayed on the secondary screen; the game interface displayed on the secondary screen may be operated by using the virtual button displayed on the main screen, that is,
  • the main screen can be used as a game controller.
  • the main screen When the main screen is used as a game controller, the main screen does not need to achieve a high display effect.
  • the CABC mode of the main screen can be set to the MOVIE mode to reduce the power consumption of the main screen.
  • different CABC modes can be set for different scenes (display screens) in single-screen mode.
  • the CABC value is set in combination with the usage scenario; for example, for the display screen as the gamepad, the display effect is not high, and the CABC value of the display screen where the gamepad is located can be set to 2, which has the purpose of reducing the power consumption of the display.
  • the backlight mode brightness can be controlled by using the CABC mode of the same mode for the N display screens.
  • the third embodiment of the present invention may be implemented by using a processor or the like, or may be implemented based on the driving chip of each display screen and the backlight chip of each display screen described above.
  • the remaining power of the electronic device may be first acquired by the processor of the electronic device. Then, when the processor determines that the remaining power of the electronic device is lower than the power threshold, the CABC of each display of the electronic device may be used. The mode is set to MOVIE mode to reduce the power consumption of the display.
  • the power threshold may be preset in actual demand. For example, when the remaining power is presented in percentage, the power threshold may be between 10% and 30%, and optionally, the power threshold is 20%.
  • a fifth embodiment of the present invention provides an electronic device according to the display screen brightness control method of the electronic device according to the foregoing embodiment of the present invention.
  • FIG. 5 is a schematic diagram of another hardware structure of an electronic device according to an embodiment of the present invention.
  • the electronic device may include a second memory 501, a processor 502, and N display screens 503, where N is a natural number greater than 1.
  • the second memory 501 is configured to store a computer program;
  • the processor 502 is configured to execute a computer program stored in the memory to implement the steps of: determining display content of each display screen;
  • the display content of the screen determines the backlight brightness of each display screen; when there are at least two display screens having different backlight brightness in the N display screens, the backlight brightness of at least one of the N display screens
  • the adjustment is made such that the backlights of the N display screens have the same brightness.
  • the second memory 501 may be a volatile memory such as a RAM; or a non-volatile memory such as a ROM, a flash memory, an HDD or a solid state hard disk SSD; or a combination of the above types of memories, and Processor 502 provides instructions and data.
  • a volatile memory such as a RAM
  • a non-volatile memory such as a ROM, a flash memory, an HDD or a solid state hard disk SSD; or a combination of the above types of memories
  • Processor 502 provides instructions and data.
  • the processor 502 may be an Application Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a Digital Signal Processing Device (DSPD), or a programmable logic device (Programmable). At least one of a Logic Device (PLD), a Field Programmable Gate Array (FPGA), a CPU, a controller, a microcontroller, and a microprocessor. It is to be understood that, for the different devices, the electronic device for implementing the above-mentioned processor functions may be other, which is not specifically limited in the embodiment of the present invention.
  • ASIC Application Specific Integrated Circuit
  • DSP Digital Signal Processor
  • DSPD Digital Signal Processing Device
  • PROM programmable logic device
  • PLD Logic Device
  • FPGA Field Programmable Gate Array
  • the processor 502 is specifically configured to execute a computer program stored in the memory, and implements the steps of: acquiring an input backlight brightness value of each display screen, where the input backlight brightness value of each display screen includes an input. a backlight brightness value to each display of the electronic device, or a backlight brightness value of each display screen determined according to the ambient light intensity of the electronic device; an input to each display screen according to the display content of each display screen The backlight brightness values are corrected to give the backlight brightness of each display.
  • the input backlight brightness values of the N display screens are the same.
  • the processor 502 is specifically configured to execute a computer program stored in the memory, and implements the following steps: adjusting an input backlight brightness value of the at least one display screen to obtain an adjustment of the at least one display screen And inputting the backlight brightness value; and adjusting the adjusted input backlight brightness value of the at least one display screen according to the display content of the at least one display screen to obtain the adjusted backlight brightness of the at least one display screen.
  • the processor 502 is specifically configured to execute a computer program stored in the memory, and implement the following steps: after determining display content of each display screen, determining a type of display content of each display screen; When the display contents of at least two of the display screens are different, the backlight brightness is controlled by a different CABC mode for the display screen displaying different types of display contents.
  • the processor 502 is further configured to execute a computer program stored in the memory, and implement the following steps: acquiring a remaining power of the electronic device; when the remaining power of the electronic device is lower than a power threshold, The mode of the CABC of each display screen of the electronic device is determined to be the MOVIE mode.
  • a sixth embodiment of the present invention provides a computer readable storage medium.
  • the computer program instructions corresponding to the display backlight brightness control method of the electronic device in the embodiment may be stored in an optical disk, a hard disk, and a U.
  • a storage medium such as a disk
  • the computer program instructions corresponding to the display backlight brightness control method of the electronic device in the storage medium are read or executed by an electronic device, implementing the electronic device of any of the foregoing embodiments The steps of the display backlight brightness control method.
  • Embodiments of the present invention provide a computer program product, the computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions, when the program instructions are executed by a computer
  • the computer is caused to perform the method of any of the above method embodiments.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention can take the form of a hardware embodiment, a software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

一种电子设备的显示屏亮度控制方法、一种电子设备和计算机可读存储介质，其中电子设备包括N个显示屏；方法包括：确定每个显示屏的显示内容（201）；根据每个显示屏的显示内容，并确定出每个显示屏的背光亮度（202）；N个显示屏中至少存在两个具有不同背光亮度的显示屏时，对N个显示屏中至少一个显示屏的背光亮度进行调整，使N个显示屏的背光亮度相同（203）。

Description

一种电子设备的显示屏背光亮度控制方法和电子设备 技术领域
本发明涉及多屏显示技术，尤其涉及一种电子设备的显示屏背光亮度控制方法、电子设备和计算机可读存储介质。
背景技术
目前，随着智能手机的广泛应用，手机显示技术逐渐成为研究的热点；在当前的手机显示领域，不仅存在单显示屏的手机，还存在双屏手机甚至多屏手机；对于存在两个显示屏或两个以上显示屏的手机，各显示屏的屏幕亮度通常是不一致的，例如，在各个显示屏显示不同的内容时，各显示屏通常采用不同的屏幕亮度确定方式，可能导致各个显示屏的背光亮度不同；然而，终端用户对各个显示屏背光亮度的需求通常是相同的，如此，上述的显示屏背光亮度控制方案不能满足用户的需求。
发明内容
为解决现有存在的技术问题，本发明实施例提供一种电子设备的显示屏背光亮度控制方法、电子设备和计算机可读存储介质，能够自动将各个显示屏的背光亮度调整至相同值，满足终端用户的需求。
为达到上述目的，本发明实施例的技术方案是这样实现的：本发明实施例公开了一种电子设备的显示屏背光亮度控制方法，所述电子设备包括N个显示屏，N为大于1的自然数；所述方法包括：确定每个显示屏的显示内容；根据每个显示屏的显示内容，确定出每个显示屏的背光亮度；所述N个显示屏中至少存在两个具有不同背光亮度的显示屏时，对所述N个显示屏中至少一个显示屏的背光亮度进行调整，使所述N个显示屏的背光亮度相同。
本发明实施例还公开了一种电子设备，所述电子设备包括存储器、处理器、以及N个显示屏，N为大于1的自然数；其中，所述存储器用于存储计算机程序；所述处理器用于执行所述存储器中存储的计算机程序，以 实现以下步骤：确定每个显示屏的显示内容；根据每个显示屏的显示内容，确定出每个显示屏的背光亮度；所述N个显示屏中至少存在两个具有不同背光亮度的显示屏时，对所述N个显示屏中至少一个显示屏的背光亮度进行调整，使所述N个显示屏的背光亮度相同。
本发明实施例还公开了一种计算机可读存储介质，其上存储有计算机程序，该计算机程序被处理器执行时实现上述任意一种电子设备的显示屏背光亮度控制方法的步骤。
为实现上述发明目的，本发明实施例还提供了一种计算机程序产品，所述计算机程序产品包括存储在非暂态计算机可读存储介质上的计算机程序，所述计算机程序包括程序指令，当所述程序指令被计算机执行时，使所述计算机执行以上各个方面所述的方法。
附图说明
图1为本发明实施例的电子设备的一个硬件结构示意图；
图2为本发明实施例的电子设备的显示屏背光亮度控制方法的流程图一；
图3为本发明实施例中实现双屏电子设备的显示屏背光亮度控制的一个结构示意图；
图4为本发明实施例的电子设备的显示屏背光亮度控制方法的流程图二；
图5为本发明实施例的电子设备的另一个硬件结构示意图。
具体实施方式
以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。本发明实施例可以应用于具有多个显示屏的电子设备中，这里，电子设备可以是计算机等固定终端，也可以是手机、平板电脑、笔记本电脑等移动终端；显示屏可以是采用背光提供的光源的显示屏，例如，可以是液晶显示屏(Liquid Crystal Display，LCD)、LED(Light Emitting Diode)显 示屏等。
这里，上述记载的显示屏可以采用图像适应性亮度控制(Content Adaptive Brightness Control，CABC)方式控制背光亮度，显示屏对应的CABC模式可以是OFF模式、UI模式、STILL模式或MOVING模式。图1为本发明实施例的电子设备的一个硬件结构示意图，如图1所示，该电子设备可以包括第1显示屏101至第N显示屏102，该电子设备还可以包括中央处理器(Central Processing Unit，CPU)103、第一存储器104、传感器105和其它外设106等。
在实际应用中，上述第一存储器104可以是易失性存储器(volatile memory)，例如随机存取存储器(Random-Access Memory，RAM)；或者非易失性存储器(non-volatile memory)，例如只读存储器(Read-Only Memory，ROM)，快闪存储器(flash memory)，硬盘(Hard Disk Drive，HDD)或固态硬盘(Solid-State Drive，SSD)；或者上述种类的存储器的组合，并向CPU提供指令和数据。
这里，并不对上述传感器105的种类进行限定，例如，上述传感器105可以是温度传感器、距离传感器、加速度传感器等，其他外设可以是键盘、U盘等外设。
实际实施时，CPU可以读取存储器中的数据，或者向存储器中写入数据；CPU还可以控制显示屏、传感器或其他外设的工作状态。
基于上述记载的电子设备，提出以下各实施例。
第一实施例
本发明第一实施例记载了一种电子设备的显示屏背光亮度控制方法，该电子设备可以包括通过连接部件相互连接的N个显示屏，N为大于1的自然数；显然，当N等于2时，电子设备可以是双屏电子设备，当N大于2时，电子设备为具有两个显示屏以上的电子设备；也就是说，本发明实施例不仅适合双屏电子设备，而且适合两个显示屏以上的电子设备。
图2为本发明实施例的电子设备的显示屏背光亮度控制方法的流程图一，如图2所示，该流程可以包括：步骤201：确定每个显示屏的显示内 容；实际应用中，处理器控制每个显示屏工作时，可以读取每个显示屏的显示内容数据，进而确定每个显示屏的显示内容；一个示例中，在采用CABC功能的电子设备中，设置由内容分析器电路，该内容分析器电路可以读取并分析每个显示屏的显示内容，该内容分析器电路可以集合在一个芯片中实现，也可以以程序的形式存储在处理器中。
步骤202：根据每个显示屏的显示内容，确定出每个显示屏的背光亮度；可选地，本步骤的一种实现方式可以是：获取每个显示屏的输入背光亮度值，所述每个显示屏的输入背光亮度值包括输入至电子设备的每个显示屏的背光亮度值，或根据所述电子设备的环境光强确定的每个显示屏的背光亮度值；根据每个显示屏的显示内容，对每个显示屏的输入背光亮度值进行修正，得出每个显示屏的背光亮度。
这里，显示屏的输入背光亮度值可以相同，也可以不同；在一个示例中，各个显示屏的输入背光亮度值均是终端用户直接输入的参数，此时，各个显示屏的输入背光亮度值可以相同，也可以不同；在另一示例中，各个显示屏的输入背光亮度值均是由电子设备的环境光强确定的，如果采用相同的算法确定各个显示屏的输入背光亮度值，此时各个显示屏的输入背光亮度值是相同的。
实际应用中，电子设备的环境光强可以由环境光传感器采集得到。
可选地，本步骤的另一种实现方式可以是：根据每个显示屏的显示内容，并采用CABC方式确定出每个显示屏的背光亮度。CABC是一种动态的屏幕背光亮度控制方式，该技术可以根据屏幕显示的图像内容来调整该图像的灰阶值与屏幕背光亮度之间的关系，在有效的降低屏幕背光亮度的同时，基本保持图像的显示效果。
实际应用中，可以根据每个显示屏的显示内容的类型，确定每个显示屏对应的CABC的模式；这里，显示内容的类型可以是UI图片、静态图像、动态图像等。
可以理解的是，各个显示屏对应的CABC的模式可以相同，也可以不同；在一个示例中，对于双屏电子设备而言，两个显示屏均显示图片时，两个显示屏对应的CABC的模式均为STILL模式；在另一个示例中，对 于双屏电子设备而言，一个显示屏显示静态图片、另一个显示视频，则一个显示屏对应的CABC的模式为STILL模式，另一个显示屏的对应的CABC模式为MOVIE模式。
实际实施时，根据每个显示屏的显示内容，并采用CABC方式确定出每个显示屏的背光亮度，可以包括：获取每个显示屏的输入背光亮度值，每个显示屏的输入背光亮度值为输入至电子设备的每个显示屏的背光亮度值或根据电子设备的环境光强确定的每个显示屏的背光亮度值；根据每个显示屏的显示内容，并采用CABC方式对每个显示屏的输入背光亮度值进行修正，得出每个显示屏的背光亮度。
可选的，上述记载的N个显示屏的输入背光亮度值相同；可以理解的是，如果N个显示屏的输入背光亮度值相同，但是这N个显示屏的显示内容不同，则根据CABC方式得出的N个显示屏的背光亮度可能是不同的；如此，为了使各个显示屏的背光亮度相同，就需要对根据CABC方式得出的至少一个显示屏的背光亮度进行调整。
在一个示例中，本步骤可以利用处理器等实现；在另一个示例中，电子设备可以包括各个显示屏的驱动芯片和各个显示屏的背光芯片，其中，每个显示屏的驱动芯片可以获取每个显示屏的显示内容以及各个显示屏的输入背光亮度值，并采用CABC方式确定每个显示屏的背光亮度；每个显示屏的驱动芯片还可以将对应显示屏的背光亮度发送至对应的背光芯片；实际实施时，每个显示屏的驱动芯片可以通过脉冲宽度调制(Pulse Width Modulation，PWM)信号向背光芯片发送背光亮度，这里，可以使用PWM信号占空比表示发送的背光亮度；在一个示例中，每个显示屏的驱动芯片可以将的PWM波形直接传输到背光芯片的PWM调节脚，进而调整相应的显示屏的背光亮度，实现对背光源的功耗控制。这里，每个显示屏的背光芯片可以根据接收到的信号驱动相应的背光灯发光。
步骤203：所述N个显示屏中至少存在两个具有不同背光亮度的显示屏时，对所述N个显示屏中至少一个显示屏的背光亮度进行调整，使所述N个显示屏的背光亮度相同。
可选地，对于对N个显示屏中至少一个显示屏的背光亮度进行调整的 方式，在一个示例中，可以对所述至少一个显示屏的输入背光亮度值进行调整，得到所述至少一个显示屏的调整后的输入背光亮度值；根据所述至少一个显示屏的显示内容，对所述至少一个显示屏的调整后的输入背光亮度值进行修正，得到所述至少一个显示屏的调整后的背光亮度。
也就是说，通过对显示屏的输入背光亮度值进行调整，实现对显示屏的背光亮度的调整；可以理解的是，根据上述记载的内容，在对显示屏的输入背光亮度值进行调整后，显示屏的背光亮度发生变化，此时，背光芯片生成的PWM信号会发生相应的变化。
这里，显示屏的输入背光亮度值的调整幅度是根据调整后N个显示屏的背光亮度确定的，即需要确保显示屏的输入背光亮度值调整后N个显示屏的背光亮度相同。
进一步地，如果在确定每个显示屏的显示内容后，采用CABC方式确定出每个显示屏的背光亮度，则对所述至少一个显示屏的调整后的输入背光亮度值进行修正的实现方式可以是：采用CABC对所述至少一个显示屏的调整后的输入背光亮度值进行修正。
对于调整显示屏的输入背光亮度值的实现方式，示例性地，根据显示内容，采用CABC方式对输入背光亮度值进行修正的方式可以是：根据显示内容，确定一个修正比例值，该修正比例值处于0到1之间；然后，可以将输入背光亮度值乘以修正比例值得到显示屏的背光亮度；在需要将显示屏的背光亮度调整至另一个显示屏的背光亮度值时，由于在一段时间内显示屏的显示内容保持不变，因而该显示屏对应的修正比例值保持不变，可以根据显示屏对应的修正比例值以及调整后需要得到的显示屏的背光亮度值(即上述另一显示屏的背光亮度值在)，计算得出显示屏的调整后的输入背光亮度值。例如，初始时，第一显示屏的背光亮度为A，当需要将第一显示屏的背光亮度调整至第二显示屏的背光亮度B时，首先根据初始时第一显示屏的输入背光亮度值C和第一显示屏的背光亮度A，得出第一显示屏对应的修正比例值R，R＝A/C；则有：第一显示屏的调整后的输入背光亮度值为B/R，显然，根据第一显示屏的调整后的输入背光亮度值B/R、以及第一显示屏对应的修正比例值R，可以得出第一显示屏调整后 的背光亮度为B/R*R＝B，也就是说，第一显示屏调整后的背光亮度与第二显示屏的背光亮度相同。
在一个具体的示例中，对于双屏电子设备而言，可以将双屏电子设备的两个显示屏分别记为第一显示屏和第二显示屏；初始时，第一显示屏和第二显示屏的输入背光亮度值相同，均为160；第一显示屏和第二显示屏所显示的内容不同，根据CABC功能得出的第一显示屏的背光亮度为140，根据CABC功能得出的第二显示屏的背光亮度为150；由于根据CABC功能得出的两个显示屏的背光亮度不同，此时，可以对第一显示屏和/或第二显示屏的输入背光亮度值进行调整，使根据CABC功能得出的两个显示屏的背光亮度相同。
可选地，上述记载的N个显示屏中至少一个显示屏为：N个显示屏中除去背光亮度最低的显示屏之外的其他显示屏，也就是说，如果N个显示屏中至少存在两个具有不同背光亮度的显示屏，只调低N个显示屏中除去背光亮度最低的显示屏之外的其他显示屏的背光亮度，使调整后使N个显示屏的背光亮度均等于调整前背光亮度最低的显示屏的背光亮度；可以看出，采用这种背光亮度调整方式时，由于仅仅存在对显示屏的背光亮度的调低操作，因而可以有效地降低显示屏的功耗。
需要说明的是，上述N个显示屏的背光亮度相同时，则可以直接结束流程。
在一个示例中，本步骤可以利用处理器等实现；在另一个示例中，本步骤可以利用上述记载的各个显示屏的驱动芯片和各个显示屏的背光芯片实现。
目前市场上智能终端的显示屏驱动芯片都支持CABC功能，现有的CABC功能支持4种模式，分别为OFF模式、UI模式、STILL模式以及MOVING模式，分别对应寄存器设定不同的CABC值；其中，OFF模式代表CABC功能关闭，其对应的CABC值为0；UI模式适应于用户界面的显示，优化显示用户界面(User Interface，UI)图片时的功耗，尽可能的保证图片质量的同时可节省10％～15％的功耗，其对应的CABC值为1；STILL模式适应于静态图像的显示，优化显示静态图片时的功耗，该 模式下图片质量损耗在可接受的范围内，同时可节省20％～30％的功耗，其对应的CABC值为2；MOVIE模式适应于动态图像的显示优化显示动态图片时的功耗，该模式下会最大限度的降低功耗，但是会带来图片质量的部分损耗，可节省30％+的功耗，其对应的CABC值为3。
在实际实施时，对于具有多个显示屏的电子设备，可以将多个显示屏的CABC模式设置为相同的CABC模式，例如，对于具有双显示屏的智能终端设备，两个显示屏的CABC值均为2，即两个显示屏的CABC模式均为STILL模式。
可以看出，如果各个显示屏显示不同的内容，则可能导致各个显示屏的背光亮度不同，而终端用户对各个显示屏背光亮度的需求通常是相同的，如此，上述的显示屏背光亮度控制方案不能满足用户的需求。
针对上述问题，本发明实施例中，在采用CABC方式确定出每个显示屏的背光亮度后，如果N个显示屏中至少存在两个具有不同背光亮度的显示屏，则可以对个显示屏中至少一个显示屏的背光亮度进行调整，使N个显示屏的背光亮度相同；如此，能够自动将各个显示屏的背光亮度调整至相同值，满足用户对显示屏背光亮度一致性的要求。
第二实施例
为了能够更加体现本发明的目的，在本发明第一实施例的基础上，进行进一步的举例说明。
本发明第二实施例中，以双屏电子设备为例，说明显示屏背光亮度控制方法的实现方式。
图3为本发明实施例中实现双屏电子设备的显示屏背光亮度控制的一个结构示意图，如图3所示，双屏电子设备的两个显示屏分别记为主屏和副屏，图3所示的结构可以包括主屏驱动芯片301、副屏驱动芯片302、主屏背光芯片303、副屏背光芯片304、第一LED背光灯305和第二LED背光灯306；其中，主屏驱动芯片301和副屏驱动芯片302分别获取各自的输入背光亮度值；主屏驱动芯片可以获取主屏显示内容，并采用CABC方式对输入的背光亮度值进行修正，得到主屏的背光亮度，将主屏的背光 亮度通过PWM信号占空比的方式发送至主屏背光芯片；副屏驱动芯片可以获取副屏显示内容，并采用CABC方式对输入的背光亮度值进行修正，得到副屏的背光亮度，将副屏的背光亮度通过PWM信号占空比的方式发送至副屏背光芯片；主屏背光芯片303可以根据接收的信号驱动第一LED背光灯工作，这里，第一LED背光灯可以为主屏提供背光；同样地，副屏背光芯片304可以根据接收的信号却动第二LED背光灯工作，这里，第二LED背光灯可以为副屏提供背光。
示例性地，主屏驱动芯片可以通过无线数字控制信号的方式向主屏背光芯片发送数据；副屏驱动芯片可以通过无线数字控制信号的方式向副屏背光芯片发送数据；在一个具体的示例中，主屏背光芯片的型号可以是TPS61165，副屏背光芯片可以封装有电源管理集成电路(Power Management IC，PMIC)。
这里，主屏和副屏的输入背光亮度值是相同的，可以看出，在主屏和副屏的显示内容不同时，根据CABC方式得出的主屏和副屏的背光亮度是不同的(主屏驱动芯片和副屏驱动芯片输出的PWM信号占空比存在差异)，进而会影响用户体验。
针对上述问题，可以分别读取主屏驱动芯片和副屏驱动芯片输出的PWM信号占空比，由于占空比高的PWM信号经过相应的背光芯片处理后可以驱动LED背光灯发出亮度较高的背光，占空比低的PWM信号经过相应的背光芯片处理后可以驱动LED背光灯发出亮度较低的背光；因而，可以调整其中一个显示屏的输入背光亮度值，使得主屏和副屏的背光亮度达到一致；这里，显示屏的输入背光亮度值的调整方式已经在本发明第一实施例中作出说明，这里不再赘述。
可选地，可以将占空比稿的PWM信号对应的显示屏的输入背光亮度值调低，这样可以降低电子设备的显示屏的功耗。
图4为本发明实施例的电子设备的显示屏背光亮度控制方法的流程图二，如图4所示，该流程可以包括：步骤401：获取每个显示屏的CABC值以及输入背光亮度值。
这里，根据两个显示屏的显示内容，得出主屏的CABC值和副屏的 CABC值均为2，也就是说，主屏和副屏的CABC模式均为STILL模式。主屏和副屏的输入背光亮度值相同，均为Bx。
步骤402：读取主屏根据CABC方式得出的PWM信号占空比Xa、以及副屏根据CABC方式得出的PWM信号占空比Xb。
步骤403：判断Xa是否大于或等于Xb，如果是，则执行步骤404，如果否，则执行步骤405。
步骤404：将主屏的输入背光亮度值调整为(Xb/Xa)*Bx。
步骤405：将副屏的输入背光亮度值调整为(Xa/Xb)*Bx。
在一个具体的示例中，主屏和副屏的输入背光亮度值均为255，初始时，根据CABC方式得出的主屏的背光亮度为240(实际上以PWM信号占空比进行表示)，根据CABC方式得出的副屏的背光亮度为250。
根据上述实施例的电子设备的显示屏背光亮度控制方法，可以对副屏的输入背光亮度值进行修正，将副屏的输入背光亮度值修正为240*(255/250)，如此，对副屏的输入背光亮度值修正后，根据CABC方式得出的副屏的背光亮度与根据CABC方式得出的主屏的背光亮度相同，均为240。
也就是说，本发明实施例中，在利用CABC方式得出各个显示屏的背光亮度的基础上，可以通过反馈算法调节显示屏的输入背光亮度值，是得出数值至各个背光芯片的PWM信号占空比一致，从而可以消除CABC带来的各个显示屏的背光亮度不一致的影响。
第三实施例
本发明第三实施例中，可以首先确定每个显示屏的显示内容；然后，确定每个显示屏的显示内容的类型；当N个显示屏中的至少两个显示屏的显示内容的类型不同时，针对显示不同类型的显示内容的显示屏，采用不同的CABC的模式控制背光亮度。
这里，显示屏的显示内容类型可以包括UI界面、静态图像、动态图像等。
下面以上述记载的双屏电子设备为例示例性地说明本发明第三实施例 的实现方式。
在一个示例中，针对不同的应用场景，双屏电子设备的主屏和副屏的显示内容类型不同时，可以采用不同的CABC值；双屏电子设备处于儿童模式时，可以在主屏显示动画等视频内容，以吸引被拍摄儿童的视线；同时，在副屏显示拍摄预览界面；此时，由于主屏的显示内容并非是终端用户直接观看，可以将主屏的CABC模式设置为MOVIE模式，并将副屏的CABC模式设置为STILL模式。
在另一示例中，双屏电子设备处于游戏模式时，可以采用主屏显示虚拟按键，副屏显示游戏界面；针对副屏显示的游戏界面，可以采用主屏显示的虚拟按键进行操作，也就是说，主屏可以作为游戏手柄，当主屏作为游戏手柄时，不需要主屏实现很高的显示效果，此时，可以将主屏的CABC模式设置为MOVIE模式，以降低主屏的功耗。
可以看出，在多屏电子设备中，针对不同的显示内容可以设置不同的CABC模式，在不影响用户体验的场景下，可以实现降低功耗的作用。
可选的，单屏模式下也可以针对不同的场景(显示画面)设置不同的CABC模式，CABC的值设置的越高，功耗下降越大，但是会带来一些显示效果的下降，所以需要结合使用场景进行CABC值的设置；例如，对于作为游戏手柄的显示屏，对于显示效果要求不高，可以将游戏手柄所在显示屏的CABC值设置为2，已达到降低显示屏功耗的目的。
需要说明的是，当N个显示屏的显示内容的类型相同时，针对N个显示屏可以采用相同模式的CABC的模式控制背光亮度。
本发明第三实施例可以采用处理器等实现，也可以基于上述记载的各个显示屏的驱动芯片和各个显示屏的背光芯片实现。
第四实施例
本发明第四实施例中，可以由电子设备的处理器首先获取电子设备的剩余电量，然后，上述处理器确定电子设备的剩余电量低于电量阈值时，可以将电子设备的各个显示屏的CABC模式设置为MOVIE模式，以降低显示屏的功耗。
这里，电量阈值可以实际需求预先设置，例如，剩余电量以百分比形式呈现时，电量阈值可以在10％到30％之间，可选的，电量阈值为20％。
第五实施例
针对本发明前述实施例的电子设备的显示屏亮度控制方法，本发明第五实施例提出了一种电子设备。
图5为本发明实施例的电子设备的另一个硬件结构示意图，如图5所示，该电子设备可以包括第二存储器501、处理器502、以及N个显示屏503，N为大于1的自然数；其中，所述第二存储器501用于存储计算机程序；所述处理器502用于执行所述存储器中存储的计算机程序，以实现以下步骤：确定每个显示屏的显示内容；根据每个显示屏的显示内容，确定出每个显示屏的背光亮度；所述N个显示屏中至少存在两个具有不同背光亮度的显示屏时，对所述N个显示屏中至少一个显示屏的背光亮度进行调整，使所述N个显示屏的背光亮度相同。
在实际应用中，上述第二存储器501可以是易失性存储器，例如RAM；或者非易失性存储器，例如ROM，快闪存储器，HDD或固态硬盘SSD；或者上述种类的存储器的组合，并向处理器502提供指令和数据。
上述处理器502可以为特定用途集成电路(Application Specific Integrated Circuit，ASIC)、数字信号处理器(Digital Signal Processor，DSP)、数字信号处理装置(Digital Signal Processing Device，DSPD)、可编程逻辑装置(Programmable Logic Device，PLD)、现场可编程门阵列(Field Programmable Gate Array，FPGA)、CPU、控制器、微控制器、微处理器中的至少一种。可以理解地，对于不同的设备，用于实现上述处理器功能的电子器件还可以为其它，本发明实施例不作具体限定。
示例性地，所述处理器502具体用于执行所述存储器中存储的计算机程序，实现以下步骤：获取每个显示屏的输入背光亮度值，所述每个显示屏的输入背光亮度值包括输入至电子设备的每个显示屏的背光亮度值，或根据所述电子设备的环境光强确定的每个显示屏的背光亮度值；根据每个显示屏的显示内容，对每个显示屏的输入背光亮度值进行修正，得出每个 显示屏的背光亮度。
示例性地，所述N个显示屏的输入背光亮度值相同。
示例性地，所述处理器502具体用于执行所述存储器中存储的计算机程序，实现以下步骤：对所述至少一个显示屏的输入背光亮度值进行调整，得到所述至少一个显示屏的调整后的输入背光亮度值；根据所述至少一个显示屏的显示内容，对所述至少一个显示屏的调整后的输入背光亮度值进行修正，得到所述至少一个显示屏的调整后的背光亮度。
示例性地，所述处理器502具体用于执行所述存储器中存储的计算机程序，实现以下步骤：确定每个显示屏的显示内容后，确定每个显示屏的显示内容的类型；所述N个显示屏中的至少两个显示屏的显示内容的类型不同时，针对显示不同类型的显示内容的显示屏，采用不同的CABC的模式控制背光亮度。
示例性地，所述处理器502还用于执行所述存储器中存储的计算机程序，实现以下步骤：获取所述电子设备的剩余电量；所述电子设备的剩余电量低于电量阈值时，将所述电子设备的各个显示屏的CABC的模式确定为MOVIE模式。
第六实施例
本发明第六实施例提出了一种计算机可读存储介质，具体来讲，本实施例中的一种电子设备的显示屏背光亮度控制方法对应的计算机程序指令可以被存储在光盘，硬盘，U盘等存储介质上，当存储介质中的与一种电子设备的显示屏背光亮度控制方法对应的计算机程序指令被一电子设备读取或被执行时，实现前述实施例的任意一种电子设备的显示屏背光亮度控制方法的步骤。
第七实施例
本发明实施例提供了一种计算机程序产品，所述计算机程序产品包括存储在非暂态计算机可读存储介质上的计算机程序，所述计算机程序包括程序指令，当所述程序指令被计算机执行时，使所述计算机执行上述任意 方法实施例中的方法。
本领域内的技术人员应明白，本发明的实施例可提供为方法、系统、或计算机程序产品。因此，本发明可采用硬件实施例、软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
以上所述，仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围。

Claims (10)

  1. 一种电子设备的显示屏背光亮度控制方法，其中，所述电子设备包括N个显示屏，N为大于1的自然数；所述方法包括：
    确定每个显示屏的显示内容；
    根据每个显示屏的显示内容，确定出每个显示屏的背光亮度；
    所述N个显示屏中至少存在两个具有不同背光亮度的显示屏时，对所述N个显示屏中至少一个显示屏的背光亮度进行调整，使所述N个显示屏的背光亮度相同。
  2. 根据权利要求1所述的方法，其中，所述根据每个显示屏的显示内容，确定出每个显示屏的背光亮度，包括：
    获取每个显示屏的输入背光亮度值，所述每个显示屏的输入背光亮度值包括输入至电子设备的每个显示屏的背光亮度值，或根据所述电子设备的环境光强确定的每个显示屏的背光亮度值；
    根据每个显示屏的显示内容，对每个显示屏的输入背光亮度值进行修正，得出每个显示屏的背光亮度。
  3. 根据权利要求2所述的方法，其中，所述N个显示屏的输入背光亮度值相同。
  4. 根据权利要求2所述的方法，其中，所述对所述N个显示屏中至少一个显示屏的背光亮度进行调整，包括：
    对所述至少一个显示屏的输入背光亮度值进行调整，得到所述至少一个显示屏的调整后的输入背光亮度值；
    根据所述至少一个显示屏的显示内容，对所述至少一个显示屏的调整后的输入背光亮度值进行修正，得到所述至少一个显示屏的调整后的背光亮度。
  5. 根据权利要求1所述的方法，其中，确定每个显示屏的显示内容后，所述方法还包括：
    确定每个显示屏的显示内容的类型；
    所述N个显示屏中的至少两个显示屏的显示内容的类型不同时，针对显示 不同类型的显示内容的显示屏，采用不同的图像适应性亮度控制CABC的模式控制背光亮度。
  6. 根据权利要求1所述的方法，其中，所述方法还包括：
    获取所述电子设备的剩余电量；
    所述电子设备的剩余电量低于电量阈值时，将所述电子设备的各个显示屏的CABC的模式确定为MOVIE模式。
  7. 一种电子设备，其中，所述电子设备包括存储器、处理器、以及N个显示屏，N为大于1的自然数；其中，
    所述存储器用于存储计算机程序；
    所述处理器用于执行所述存储器中存储的计算机程序，以实现以下步骤：
    确定每个显示屏的显示内容；
    根据每个显示屏的显示内容，确定出每个显示屏的背光亮度；
    所述N个显示屏中至少存在两个具有不同背光亮度的显示屏时，对所述N个显示屏中至少一个显示屏的背光亮度进行调整，使所述N个显示屏的背光亮度相同。
  8. 根据权利要求7所述的电子设备，其中，所述处理器用于执行所述存储器中存储的计算机程序，以实现以下步骤：
    获取每个显示屏的输入背光亮度值，所述每个显示屏的输入背光亮度值包括输入至电子设备的每个显示屏的背光亮度值，或根据所述电子设备的环境光强确定的每个显示屏的背光亮度值；
    根据每个显示屏的显示内容，对每个显示屏的输入背光亮度值进行修正，得出每个显示屏的背光亮度。
  9. 根据权利要求8所述的电子设备，其中，所述处理器用于执行所述存储器中存储的计算机程序，以实现以下步骤：
    对所述至少一个显示屏的输入背光亮度值进行调整，得到所述至少一个显示屏的调整后的输入背光亮度值；
    根据所述至少一个显示屏的显示内容，对所述至少一个显示屏的调整后的输入背光亮度值进行修正，得到所述至少一个显示屏的调整后的背光亮度。
  10. 一种计算机可读存储介质，其上存储有计算机程序，其中，该计算机程序被处理器执行时实现权利要求1至6任一项所述的方法的步骤。
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