WO2023221051A1 - Procédé et appareil de réglage de rétroéclairage, dispositif et support de stockage - Google Patents

Procédé et appareil de réglage de rétroéclairage, dispositif et support de stockage Download PDF

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Publication number
WO2023221051A1
WO2023221051A1 PCT/CN2022/093927 CN2022093927W WO2023221051A1 WO 2023221051 A1 WO2023221051 A1 WO 2023221051A1 CN 2022093927 W CN2022093927 W CN 2022093927W WO 2023221051 A1 WO2023221051 A1 WO 2023221051A1
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WIPO (PCT)
Prior art keywords
brightness
adjustment
backlight brightness
backlight
target
Prior art date
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PCT/CN2022/093927
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English (en)
Chinese (zh)
Inventor
曾双耀
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北京小米移动软件有限公司
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Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to PCT/CN2022/093927 priority Critical patent/WO2023221051A1/fr
Priority to CN202280004377.7A priority patent/CN115668349A/zh
Publication of WO2023221051A1 publication Critical patent/WO2023221051A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations
    • H04M19/047—Vibrating means for incoming calls
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72448—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/725—Cordless telephones

Definitions

  • the present disclosure relates to the field of display technology, and in particular, to a backlight adjustment method, device, equipment and storage medium.
  • embodiments of the present disclosure provide a backlight adjustment method, device, equipment and storage medium to solve the defects in the related technology.
  • a backlight adjustment method is provided, applied to a terminal device, and the method includes:
  • the terminal device In response to detecting that the terminal device satisfies the backlight adjustment condition, obtain the current backlight brightness of the terminal device screen, where the current backlight brightness includes the current brightness of the backlight module of the terminal device screen;
  • the current backlight brightness is adjusted to a predetermined target adjustment brightness based on the backlight brightness adjustment step size.
  • the terminal device meets backlight adjustment conditions, including:
  • the automatic adjustment function of the screen color temperature of the terminal device is turned on.
  • the method further includes determining the target adjustment brightness in advance based on:
  • the first initial backlight brightness includes the backlight brightness when the automatic color temperature adjustment function of the terminal device screen is turned off;
  • the target adjustment brightness is determined based on the backlight adjustment parameter and the first initial backlight brightness.
  • the target adjusted brightness is higher than the current backlight brightness
  • Adjusting the current backlight brightness to a predetermined target adjustment brightness based on the backlight brightness adjustment step size includes:
  • the first preset process includes: in response to detecting that the first target difference is greater than the backlight brightness Adjust the step size to increase the current backlight brightness by the backlight brightness adjustment step size, and the first target difference is the difference between the target adjustment brightness and the current backlight brightness;
  • the current backlight brightness is adjusted upward to the target adjustment brightness.
  • the terminal device meets backlight adjustment conditions, including:
  • the terminal equipment screen color temperature automatic adjustment function is switched from the on state to the off state.
  • the method further includes determining the target adjustment brightness in advance based on:
  • the second initial backlight brightness includes the backlight brightness when the automatic color temperature adjustment function of the terminal device screen is turned off;
  • the second initial backlight brightness is determined as the target adjusted brightness.
  • the target adjusted brightness is lower than the current backlight brightness
  • Adjusting the current backlight brightness to a predetermined target adjustment brightness based on the backlight brightness adjustment step size includes:
  • the second preset process includes: in response to detecting that the second target difference is greater than the backlight brightness. Adjust the step size to lower the current backlight brightness by the backlight brightness adjustment step size, and the second target difference is the difference between the current backlight brightness and the target adjustment brightness;
  • the current backlight brightness is lowered to the target adjustment brightness.
  • a backlight adjustment device applied to terminal equipment, and the device includes:
  • a current backlight acquisition module configured to acquire the current backlight brightness of the terminal device screen in response to detecting that the terminal device satisfies the backlight adjustment condition, where the current backlight brightness includes the current brightness of the backlight module of the terminal device screen;
  • an adjustment step size determination module configured to determine the backlight brightness adjustment step size according to the current backlight brightness
  • a backlight brightness adjustment module configured to adjust the current backlight brightness to a predetermined target adjustment brightness based on the backlight brightness adjustment step size.
  • the terminal device meets backlight adjustment conditions, including:
  • the automatic adjustment function of the screen color temperature of the terminal device is turned on.
  • the device further includes a first brightness determination module
  • the first brightness determination module includes:
  • a first brightness acquisition unit configured to acquire the first initial backlight brightness of the terminal device screen, where the first initial backlight brightness includes the backlight brightness when the color temperature automatic adjustment function of the terminal device screen is turned off;
  • an adjustment parameter determination unit configured to determine the backlight adjustment parameter of the terminal device based on the current color temperature of the terminal device screen
  • a first brightness determination unit configured to determine the target adjustment brightness based on the backlight adjustment parameter and the first initial backlight brightness.
  • the target adjusted brightness is higher than the current backlight brightness
  • the backlight brightness adjustment module includes:
  • a first loop unit configured to loop through a first preset process until the first target difference is less than or equal to the backlight brightness adjustment step.
  • the first preset process includes: in response to detecting the first target If the difference is greater than the backlight brightness adjustment step, the current backlight brightness is increased by the backlight brightness adjustment step, and the first target difference is the difference between the target adjustment brightness and the current backlight brightness;
  • a brightness upward adjustment unit configured to increase the current backlight brightness to the target adjustment brightness in response to detecting that the first target difference is less than or equal to the backlight brightness adjustment step.
  • the terminal device meets backlight adjustment conditions, including:
  • the terminal equipment screen color temperature automatic adjustment function is switched from the on state to the off state.
  • the device further includes a second brightness determination module
  • the second brightness determination module includes:
  • the second brightness acquisition unit acquires the second initial backlight brightness of the terminal device screen, where the second initial backlight brightness includes the backlight brightness when the automatic color temperature adjustment function of the terminal device screen is turned off;
  • a second brightness determination unit is configured to determine the second initial backlight brightness as the target adjustment brightness.
  • the target adjusted brightness is lower than the current backlight brightness
  • the backlight brightness adjustment module includes:
  • a second loop unit configured to loop through a second preset process until the second target difference is less than or equal to the backlight brightness adjustment step.
  • the second preset process includes: in response to detecting the second target If the difference is greater than the backlight brightness adjustment step, the current backlight brightness is adjusted downward by the backlight brightness adjustment step, and the second target difference is the difference between the current backlight brightness and the target adjustment brightness;
  • a brightness down-adjustment unit configured to lower the current backlight brightness to the target adjustment brightness in response to detecting that the second target difference is less than or equal to the backlight brightness adjustment step.
  • a terminal device where the device includes:
  • the processor is configured to, when executing the computer program, implement:
  • the terminal device In response to detecting that the terminal device satisfies the backlight adjustment condition, obtain the current backlight brightness of the terminal device screen, where the current backlight brightness includes the current brightness of the backlight module of the terminal device screen;
  • the current backlight brightness is adjusted to a predetermined target adjustment brightness based on the backlight brightness adjustment step size.
  • a computer-readable storage medium is provided, a computer program is stored thereon, and when executed by a processor, the program implements:
  • the terminal device In response to detecting that the terminal device meets the backlight adjustment condition, obtain the current backlight brightness of the terminal device screen, where the current backlight brightness includes the current brightness of the backlight module of the terminal device screen;
  • the current backlight brightness is adjusted to a predetermined target adjustment brightness based on the backlight brightness adjustment step size.
  • the present disclosure obtains the current backlight brightness of the terminal device screen in response to detecting that the terminal device satisfies the backlight adjustment condition, and determines the backlight brightness adjustment step size based on the current backlight brightness, and then based on the backlight brightness adjustment step size Adjusting the current backlight brightness to a predetermined target adjustment brightness can realize gradual adjustment of the backlight brightness, avoid sudden changes in screen brightness, and thereby avoid discomfort to the user's eyes, thereby improving the user's visual experience.
  • Figure 1 is a flow chart of a backlight adjustment method according to an exemplary embodiment of the present disclosure
  • Figure 2 is a flowchart showing how to determine the target adjustment brightness according to an exemplary embodiment of the present disclosure
  • FIG. 3 is a flowchart showing how to adjust the current backlight brightness to a predetermined target adjustment brightness based on the backlight brightness adjustment step according to an exemplary embodiment of the present disclosure
  • Figure 4 is a flowchart showing how to determine the target adjustment brightness according to yet another exemplary embodiment of the present disclosure
  • Figure 5 is a flowchart showing how to adjust the current backlight brightness to a predetermined target adjustment brightness based on the backlight brightness adjustment step size according to yet another exemplary embodiment of the present disclosure
  • Figure 6 is a flow chart of a backlight adjustment method according to yet another exemplary embodiment of the present disclosure.
  • Figure 7 is a block diagram of a backlight adjustment device according to an exemplary embodiment of the present disclosure.
  • Figure 8 is a block diagram of a backlight adjustment device according to yet another exemplary embodiment of the present disclosure.
  • Figure 9 is a block diagram of a terminal device according to an exemplary embodiment of the present disclosure.
  • terminal devices can support automatic color temperature adjustment function. For example, when the ambient color temperature is too cold (too white), the terminal device screen can automatically adjust to the same white temperature; when the environment is too warm (too yellow), the terminal device screen can automatically adjust to the same yellowish temperature.
  • the inventor found that when the color temperature is automatically adjusted, the brightness of the screen will be reduced, so the backlight of the screen needs to be adjusted.
  • the backlight brightness of the screen is usually directly adjusted to the target adjustment brightness (i.e., the adjusted backlight value), which will cause a sudden change in screen brightness, causing discomfort to the user's eyes, and thus affecting the user's visual experience.
  • the present disclosure proposes the following backlight adjustment methods, devices, equipment and storage media to solve the above problems in related technologies.
  • Figure 1 is a flow chart of a backlight adjustment method according to an exemplary embodiment; the method of this embodiment can be applied to terminal devices with screens (such as smart phones, tablets, laptops, desktop computers, etc.).
  • terminal devices with screens such as smart phones, tablets, laptops, desktop computers, etc.
  • the method includes the following steps S101-S103:
  • step S101 in response to detecting that the terminal device satisfies the backlight adjustment condition, obtain the current backlight brightness of the screen of the terminal device.
  • the current backlight brightness of the screen of the terminal device can be obtained.
  • the current backlight brightness includes the current brightness of the backlight module of the terminal device screen.
  • the above situation where the terminal device meets the backlight adjustment conditions may include:
  • the terminal device screen color temperature automatic adjustment function (such as true color display function) is turned on; or,
  • the automatic adjustment function of the screen color temperature of the terminal device is switched from the on state to the off state.
  • step S102 the backlight brightness adjustment step is determined according to the current backlight brightness.
  • the backlight brightness adjustment step may be determined based on the current backlight brightness.
  • the backlight brightness adjustment step can be set smaller, and when the current backlight brightness is high, the backlight brightness adjustment step can be set larger, that is, the backlight brightness adjustment step is the same as the current backlight brightness adjustment step.
  • Backlight brightness is positively related.
  • the backlight brightness can be adjusted quickly and delicately.
  • the calculation method of the backlight brightness adjustment step can be as shown in the following formula (1-1):
  • step b/k+c; (1-1)
  • k and c are adjustable coefficients, which can be obtained by developers such as visual effects based on actual measured values debugged by terminal equipment. It can be seen from the formula (1-1) that the backlight brightness adjustment step step has a linear function relationship with the current backlight brightness b, and 1/k is the slope of the linear function, and c is the intercept of the linear function on the y-axis. .
  • the current backlight adjustment mode is the automatic adjustment mode or the manual adjustment mode. If the current backlight adjustment mode is the automatic adjustment mode, the backlight brightness adjustment step is determined based on the current backlight brightness; if the current backlight adjustment mode is the manual adjustment mode, the current backlight brightness is directly adjusted to the target adjustment brightness.
  • step S103 the current backlight brightness is adjusted to a predetermined target adjustment brightness based on the backlight brightness adjustment step size.
  • the current backlight brightness can be adjusted to a predetermined target adjustment brightness based on the backlight brightness adjustment step.
  • the current backlight brightness can be gradually increased to the target adjustment brightness based on the backlight brightness adjustment step; and when the target adjustment brightness is lower than the current backlight brightness, the current backlight brightness can be gradually adjusted to the target adjustment brightness.
  • the current backlight brightness is gradually adjusted downward to the target adjustment brightness based on the backlight brightness adjustment step size.
  • the number of adjustments is calculated, and it is determined whether the number of adjustments is greater than a preset number threshold. It can be understood that every time the current backlight brightness is adjusted according to the backlight brightness adjustment step, the number of adjustments is increased by 1. If the number of adjustments is greater than the number threshold, the operation of adjusting the current backlight brightness to the predetermined target adjustment brightness based on the backlight brightness adjustment step is stopped, that is, the current backlight brightness is no longer adjusted based on the backlight brightness adjustment step, even if the current backlight brightness has not been adjusted yet.
  • Adjust to the target adjustment brightness if the number of adjustments is less than or equal to the number threshold, continue to adjust the current backlight brightness based on the backlight brightness adjustment step until the current backlight brightness is adjusted to the target adjustment brightness.
  • the number threshold is determined based on the backlight adjustable range of the terminal device screen, and can also be set according to specific needs. This embodiment does not impose specific restrictions on the setting method of the number threshold.
  • the method of adjusting the current backlight brightness to a predetermined target adjustment brightness based on the backlight brightness adjustment step can be seen in FIG. 3 or FIG. 5 below, and will not be described in detail here.
  • the method of this embodiment obtains the current backlight brightness of the terminal device screen in response to detecting that the terminal device satisfies the backlight adjustment condition, and determines the backlight brightness adjustment step according to the current backlight brightness, and then Adjusting the current backlight brightness to a predetermined target adjustment brightness based on the backlight brightness adjustment step can realize gradual adjustment of the backlight brightness, avoid sudden changes in screen brightness, and thereby avoid discomfort to the user's eyes, thereby improving user visual experience.
  • FIG. 2 is a flow chart illustrating how to determine the target adjustment brightness according to an exemplary embodiment of the present disclosure; this embodiment uses how to determine the target adjustment brightness as an example to illustrate based on the above embodiment.
  • the methods for determining the target adjustment brightness are different.
  • the terminal device meets the backlight adjustment conditions, including the automatic adjustment function of the screen color temperature of the terminal device being turned on.
  • the backlight adjustment method of this embodiment also includes determining the target adjustment brightness based on the following steps S201-S203 in advance:
  • step S201 the first initial backlight brightness of the terminal device screen is obtained.
  • the first initial backlight brightness of the terminal device screen can be recorded before the automatic color temperature adjustment function is turned on, that is, the backlight brightness of the terminal device screen when the automatic color temperature adjustment function is turned off.
  • step S202 the backlight adjustment parameter of the terminal device is determined based on the current color temperature of the screen of the terminal device.
  • the brightness loss of the screen needs to be adjusted through backlight adjustment.
  • the current color temperature of the screen of the terminal device can be obtained, and then the backlight adjustment parameters of the terminal device are determined based on the current color temperature.
  • determining the backlight adjustment parameters of the terminal device based on the current color temperature can be as shown in the following formula (2-1):
  • MCCTBLC k1*cct 2 +k2*cct+k3; (2-1)
  • MCCTBLC is the backlight adjustment parameter, and its value is less than 1; cct is the current color temperature of the terminal device screen.
  • step S203 the target adjustment brightness is determined based on the backlight adjustment parameter and the first initial backlight brightness.
  • the target adjustment brightness may be determined based on the backlight adjustment parameter and the first initial backlight brightness.
  • the target adjustment brightness can be determined based on the ratio of the first initial backlight brightness and the backlight adjustment parameter, that is, the target adjustment brightness can be determined based on the following formula (2-2):
  • v1 is the target adjustment brightness when the terminal device screen color temperature automatic adjustment function is turned on
  • v is the first initial backlight brightness
  • this embodiment obtains the first initial backlight brightness of the terminal device screen and determines the backlight adjustment parameter of the terminal device based on the current color temperature of the terminal device screen, and then based on the backlight adjustment parameter and The first initial backlight brightness determines the target adjustment brightness, which can accurately determine the target adjustment brightness based on the first initial backlight brightness of the terminal device screen and the current color temperature of the terminal device screen.
  • Figure 3 is a flow chart showing how to adjust the current backlight brightness to a predetermined target adjustment brightness based on the backlight brightness adjustment step size according to an exemplary embodiment of the present disclosure; this embodiment is based on the above embodiment.
  • An exemplary explanation is given as an example of how to adjust the current backlight brightness to a predetermined target adjustment brightness based on the backlight brightness adjustment step size.
  • the current backlight brightness is adjusted in different ways.
  • the terminal device meets the backlight adjustment conditions, including that the terminal device screen color temperature automatic adjustment function is turned on, so the target adjustment brightness is higher than the current backlight brightness.
  • the automatic color temperature adjustment function is turned on, the color temperature of the screen will be automatically adjusted, which will cause the brightness of the screen to decrease. Therefore, the backlight of the screen needs to be adjusted upward at this time, so the target adjustment brightness is higher than the current Backlight brightness.
  • the above-mentioned step S103 of adjusting the current backlight brightness to a predetermined target adjustment brightness based on the backlight brightness adjustment step includes the following steps S301-S303:
  • step S301 determine whether the first target difference is greater than the backlight brightness adjustment step: if it is greater than the backlight brightness adjustment step, execute step S302; if less than or equal to the backlight brightness adjustment step, execute step S303;
  • step S302 increase the current backlight brightness by the backlight brightness adjustment step
  • step S303 the current backlight brightness is adjusted upward to the target adjustment brightness.
  • the first target difference value that is, the difference between the target adjustment brightness and the current backlight brightness
  • the first target difference value can be calculated, and then it is determined whether the first target difference value is greater than the backlight brightness adjustment step size.
  • step S302 determines whether the first target difference (that is, the difference between the target adjustment brightness and the current backlight brightness b' after adjustment) is greater than the backlight brightness adjustment step long step; if it is still greater than the backlight brightness adjustment step, execute step S302 again; execute steps S301-S302 in a loop until the first target difference is less than or equal to the backlight brightness adjustment step, and then execute step S303, that is, increase the current backlight brightness. Adjust the brightness to the target.
  • FIG. 4 is a flowchart showing how to determine the target adjustment brightness according to yet another exemplary embodiment of the present disclosure; this embodiment is based on the above embodiment and takes how to determine the target adjustment brightness as an example to illustrate.
  • the methods for determining the target adjustment brightness are different.
  • the terminal device satisfies the backlight adjustment condition, which includes switching the screen color temperature automatic adjustment function of the terminal device from an on state to an off state.
  • the backlight adjustment method of this embodiment also includes determining the target adjustment brightness in advance based on the following steps S401-S402:
  • step S401 obtain the second initial backlight brightness of the terminal device screen.
  • the second initial backlight brightness of the terminal device screen can be recorded before the automatic color temperature adjustment function is turned on, that is, the backlight brightness of the terminal device screen when the automatic color temperature adjustment function is turned off.
  • step S402 the second initial backlight brightness is determined as the target adjustment brightness.
  • the second initial backlight brightness may be determined as the target adjustment brightness.
  • this embodiment can achieve the second initial backlight based on the terminal device screen by obtaining the second initial backlight brightness of the terminal device screen and determining the second initial backlight brightness as the target adjustment brightness. Brightness Accurately determines the target adjustment brightness.
  • Figure 5 is a flow chart showing how to adjust the current backlight brightness to a predetermined target adjustment brightness based on the backlight brightness adjustment step size according to another exemplary embodiment of the present disclosure; this embodiment is based on the above embodiment.
  • the above takes an example of how to adjust the current backlight brightness to a predetermined target adjustment brightness based on the backlight brightness adjustment step size as an example.
  • the current backlight brightness is adjusted in different ways.
  • the terminal device meets the backlight adjustment conditions, including the automatic adjustment function of the screen color temperature of the terminal device being switched from the on state to the off state, so the target adjustment brightness is lower than the current backlight brightness.
  • the automatic color temperature adjustment function when the automatic color temperature adjustment function is turned on, the color temperature of the screen will automatically adjust, which will cause the brightness of the screen to decrease, so the backlight of the screen will be adjusted upward. Therefore, when the automatic color temperature adjustment function is switched from the on state to the off state, in order to prevent the screen from being too bright, the backlight of the screen needs to be adjusted downward, so the target adjustment brightness is lower than the current backlight brightness.
  • the target adjustment brightness i.e., the adjusted backlight value
  • the gradient adjustment method described below is also used.
  • the above-mentioned step S103 of adjusting the current backlight brightness to a predetermined target adjustment brightness based on the backlight brightness adjustment step includes the following steps S501-S503:
  • step S501 determine whether the second target difference is greater than the backlight brightness adjustment step: if it is greater than the backlight brightness adjustment step, execute step S502; if less than or equal to the backlight brightness adjustment step, execute step S503;
  • step S502 lower the current backlight brightness by the backlight brightness adjustment step
  • step S503 the current backlight brightness is lowered to the target adjustment brightness.
  • the second target difference value that is, the difference between the current backlight brightness and the target adjustment brightness
  • the second target difference value can be calculated, and then it is determined whether the second target difference value is greater than the backlight brightness adjustment step size.
  • step S502 determines whether the second target difference (that is, the difference between the current backlight brightness b' and the target adjustment brightness) is greater than the backlight brightness adjustment step; If it is still greater than the backlight brightness adjustment step, then step S502 is executed again; steps S501-S502 are executed in a loop until the second target difference is less than or equal to the backlight brightness adjustment step, and then step S503 is executed, that is, the current backlight brightness is lowered to the Target adjusts brightness.
  • Figure 6 is a flow chart of a backlight adjustment method according to another exemplary embodiment of the present disclosure; as shown in Figure 6, in this embodiment, in order to perform backlight adjustment, the following steps can be performed:
  • the current backlight brightness is the current brightness of the backlight module of the terminal device screen
  • the initial backlight brightness is the backlight brightness when the color temperature automatic adjustment function of the terminal device screen is turned off (for example, the initial backlight brightness can be when the color temperature automatic adjustment function is turned off).
  • the target adjustment brightness v1 is determined based on the backlight adjustment parameter MCCTBLC and the initial backlight brightness v;
  • the target adjustment brightness can be determined based on the ratio of the initial backlight brightness and the backlight adjustment parameter, that is, the target adjustment brightness can be determined based on the following formula (6-1):
  • the backlight adjustment parameter MCCTBLC can be calculated based on the current color temperature cct of the terminal device screen, specifically as shown in the following formula (6-2):
  • MCCTBLC k1*cct 2 +k2*cct+k3; (6-2)
  • the value of MCCTBLC is less than 1, and k1, k2, and k3 can be obtained by visual effects developers based on actual measured values debugged by terminal equipment.
  • the automatic adjustment mode means that the terminal device turns on the automatic brightness adjustment mode
  • the manual adjustment mode means that the user manually triggers the backlight adjustment, such as manually sliding the backlight bar, etc.
  • the backlight adjustment mode is the automatic adjustment mode, determine the appropriate backlight brightness adjustment step step according to the current screen backlight brightness b;
  • the calculation method of the backlight brightness adjustment step can be shown in the following formula (6-3):
  • k and c are adjustable coefficients, which can be obtained by developers such as visual effects based on actual measured values debugged by terminal equipment. It can be seen from formula (6-3) that the backlight brightness adjustment step step has a linear function relationship with the current backlight brightness b, and 1/k is the slope of the linear function, and c is the intercept of the linear function on the y-axis. .
  • the target adjustment brightness is determined as v (that is, the value recorded before the automatic color temperature adjustment function is turned on). backlight brightness);
  • the backlight adjustment mode is the automatic adjustment mode, determine the appropriate backlight brightness adjustment step step according to the current screen backlight brightness b;
  • step 5 For the process of adjusting the backlight brightness step, please refer to step 5) above, and will not be described in detail here.
  • the backlight adjustment mode is manual adjustment mode, there is no need to use gradual backlight adjustment, and the target brightness b1 of the current step is directly set to v;
  • the times threshold N may be determined based on the backlight adjustable range of the terminal device screen. For example, if the maximum backlight value of the terminal device is 16383, and MCCTBLC can calculate its minimum value according to the formula, step also has a minimum value, such as 3, so the maximum value of N can be determined based on the following formula (6-4)
  • the current backlight brightness is quickly and smoothly adjusted by determining the appropriate backlight brightness adjustment step based on different current backlight brightness, and the screen brightness can be adjusted almost imperceptibly. , reducing the irritation to the user's eyes caused by changes in screen brightness, which can improve the user's visual experience.
  • Figure 7 is a block diagram of a backlight adjustment device according to an exemplary embodiment of the present disclosure; the device of this embodiment can be applied to terminal devices with screens (such as smart phones, tablets, laptops, desktop computers, etc.).
  • the device includes: a current backlight acquisition module 110, an adjustment step determination module 120, and a backlight brightness adjustment module 130, where:
  • the current backlight acquisition module 110 is configured to acquire the current backlight brightness of the terminal device screen in response to detecting that the terminal device satisfies the backlight adjustment condition.
  • the current backlight brightness includes the current brightness of the backlight module of the terminal device screen. ;
  • the adjustment step size determination module 120 is used to determine the backlight brightness adjustment step size according to the current backlight brightness
  • the backlight brightness adjustment module 130 is configured to adjust the current backlight brightness to a predetermined target adjustment brightness based on the backlight brightness adjustment step size.
  • the device of this embodiment obtains the current backlight brightness of the terminal device screen in response to detecting that the terminal device satisfies the backlight adjustment condition, and determines the backlight brightness adjustment step according to the current backlight brightness, and then Adjusting the current backlight brightness to a predetermined target adjustment brightness based on the backlight brightness adjustment step can realize gradual adjustment of the backlight brightness, avoid sudden changes in screen brightness, and thereby avoid discomfort to the user's eyes, thereby improving user visual experience.
  • FIG 8 is a block diagram of a backlight adjustment device according to another exemplary embodiment of the present disclosure; the device of this embodiment can be applied to terminal devices with screens (such as smart phones, tablet computers, notebook computers, desktop computers, etc. .
  • the current backlight acquisition module 210, the adjustment step determination module 220 and the backlight brightness adjustment module 230 have the same functions as the current backlight acquisition module 110, the adjustment step determination module 120 and the backlight brightness adjustment module 130 of the embodiment shown in Figure 7 are the same and will not be described in detail here.
  • the above terminal equipment meets the backlight adjustment conditions, including:
  • the automatic adjustment function of the screen color temperature of the terminal device is turned on.
  • the above device may further include a first brightness determination module 240;
  • the first brightness determination module 240 may include:
  • the first brightness acquisition unit 241 is used to acquire the first initial backlight brightness of the terminal device screen, where the first initial backlight brightness includes the backlight brightness when the automatic color temperature adjustment function of the terminal device screen is turned off;
  • the adjustment parameter determination unit 242 is configured to determine the backlight adjustment parameter of the terminal device based on the current color temperature of the terminal device screen;
  • the first brightness determination unit 243 is configured to determine the target adjustment brightness based on the backlight adjustment parameter and the first initial backlight brightness.
  • the target adjusted brightness is higher than the current backlight brightness
  • the backlight brightness adjustment module 230 may include:
  • the first loop unit 231 is configured to loop the first preset process until the first target difference is less than or equal to the backlight brightness adjustment step.
  • the first preset process includes: in response to detecting the first If the target difference is greater than the backlight brightness adjustment step, the current backlight brightness is increased by the backlight brightness adjustment step, and the first target difference is the difference between the target adjustment brightness and the current backlight brightness;
  • the brightness upward adjustment unit 232 is configured to increase the current backlight brightness to the target adjustment brightness in response to detecting that the first target difference is less than or equal to the backlight brightness adjustment step.
  • the above terminal device meets the backlight adjustment conditions, which may include:
  • the terminal equipment screen color temperature automatic adjustment function is switched from the on state to the off state.
  • the above device may further include a second brightness determination module 250;
  • the second brightness determination module 250 may include:
  • the second brightness acquisition unit 251 acquires the second initial backlight brightness of the terminal device screen, where the second initial backlight brightness includes the backlight brightness when the automatic color temperature adjustment function of the terminal device screen is turned off;
  • the second brightness determination unit 252 is configured to determine the second initial backlight brightness as the target adjustment brightness.
  • the target adjusted brightness is lower than the current backlight brightness
  • the backlight brightness adjustment module 230 may include:
  • the second loop unit 233 is configured to loop through a second preset process until the second target difference is less than or equal to the backlight brightness adjustment step.
  • the second preset process includes: in response to detecting the second If the target difference is greater than the backlight brightness adjustment step, the current backlight brightness is adjusted downward by the backlight brightness adjustment step, and the second target difference is the difference between the current backlight brightness and the target adjustment brightness;
  • the brightness down-adjustment unit 234 is configured to lower the current backlight brightness to the target adjustment brightness in response to detecting that the second target difference is less than or equal to the backlight brightness adjustment step.
  • Figure 9 is a block diagram of a terminal device according to an exemplary embodiment.
  • the device 900 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, or the like.
  • device 900 may include one or more of the following components: a processing component 902, a memory 904, a power supply component 906, a multimedia component 908, an audio component 910, an input/output (I/O) interface 912, a sensor component 914, and communications component 916.
  • a processing component 902 a memory 904
  • a power supply component 906 a multimedia component 908, an audio component 910, an input/output (I/O) interface 912, a sensor component 914, and communications component 916.
  • I/O input/output
  • Processing component 902 generally controls the overall operations of device 900, such as operations associated with display, phone calls, data communications, camera operations, and recording operations.
  • the processing component 902 may include one or more processors 920 to execute instructions to complete all or part of the steps of the above method.
  • processing component 902 may include one or more modules that facilitate interaction between processing component 902 and other components.
  • processing component 902 may include a multimedia module to facilitate interaction between multimedia component 908 and processing component 902.
  • Memory 904 is configured to store various types of data to support operations at device 900 . Examples of such data include instructions for any application or method operating on device 900, contact data, phonebook data, messages, pictures, videos, etc.
  • Memory 904 may be implemented by any type of volatile or non-volatile storage device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EEPROM), Programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read-only memory
  • EEPROM erasable programmable read-only memory
  • EPROM Programmable read-only memory
  • PROM programmable read-only memory
  • ROM read-only memory
  • magnetic memory flash memory, magnetic or optical disk.
  • Power supply component 906 provides power to the various components of device 900 .
  • Power supply components 906 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to device 900 .
  • Multimedia component 908 includes a screen that provides an output interface between the device 900 and the user.
  • the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user.
  • the touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide action.
  • multimedia component 908 includes a front-facing camera and/or a rear-facing camera.
  • the front camera and/or the rear camera may receive external multimedia data.
  • Each front-facing camera and rear-facing camera can be a fixed optical lens system or have a focal length and optical zoom capabilities.
  • Audio component 910 is configured to output and/or input audio signals.
  • audio component 910 includes a microphone (MIC) configured to receive external audio signals when device 900 is in operating modes, such as call mode, recording mode, and speech recognition mode. The received audio signals may be further stored in memory 904 or sent via communications component 916 .
  • audio component 910 also includes a speaker for outputting audio signals.
  • the I/O interface 912 provides an interface between the processing component 902 and a peripheral interface module, which may be a keyboard, a click wheel, a button, etc. These buttons may include, but are not limited to: Home button, Volume buttons, Start button, and Lock button.
  • Sensor component 914 includes one or more sensors that provide various aspects of status assessment for device 900 .
  • the sensor component 914 can detect the open/closed state of the device 900, the relative positioning of components, such as the display and keypad of the device 900, and the sensor component 914 can also detect a change in position of the device 900 or a component of the device 900. , the presence or absence of user contact with device 900 , device 900 orientation or acceleration/deceleration and temperature changes of device 900 .
  • Sensor assembly 914 may also include a proximity sensor configured to detect the presence of nearby objects without any physical contact.
  • Sensor assembly 914 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications.
  • the sensor component 914 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
  • Communication component 916 is configured to facilitate wired or wireless communications between device 900 and other devices.
  • the device 900 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, 4G or 5G, or a combination thereof.
  • the communication component 916 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel.
  • the communications component 916 also includes a near field communications (NFC) module to facilitate short-range communications.
  • NFC near field communications
  • the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.
  • RFID radio frequency identification
  • IrDA infrared data association
  • UWB ultra-wideband
  • Bluetooth Bluetooth
  • device 900 may be configured by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable Gate array (FPGA), controller, microcontroller, microprocessor or other electronic component implementation for performing the above method.
  • ASICs application specific integrated circuits
  • DSPs digital signal processors
  • DSPDs digital signal processing devices
  • PLDs programmable logic devices
  • FPGA field programmable Gate array
  • controller microcontroller, microprocessor or other electronic component implementation for performing the above method.
  • a non-transitory computer-readable storage medium including instructions such as a memory 904 including instructions, which are executable by the processor 920 of the device 900 to complete the above method is also provided.
  • the non-transitory computer-readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.

Abstract

La présente divulgation porte sur un procédé et un appareil de réglage de rétroéclairage, un dispositif et un support de stockage. Le procédé consiste : en réponse à la détection qu'un dispositif terminal satisfait à une condition de réglage de rétroéclairage, à acquérir la luminosité de rétroéclairage actuelle d'un écran de dispositif terminal, la luminosité de rétroéclairage actuelle comprenant la luminosité actuelle d'un module de rétroéclairage de l'écran de dispositif terminal ; en fonction de la luminosité de rétroéclairage actuelle, à déterminer une longueur de pas de réglage de luminosité de rétroéclairage ; et, sur la base de la longueur de pas de réglage de luminosité de rétroéclairage, à régler la luminosité de rétroéclairage actuelle à une luminosité de réglage cible prédéterminée. La présente divulgation permet de régler la luminosité de rétroéclairage de l'écran de dispositif terminal d'une manière modifiée progressivement, de telle sorte qu'il est possible d'empêcher la luminosité de l'écran d'être modifiée soudainement, protégeant ainsi un utilisateur contre un inconfort oculaire, et améliorant l'expérience visuelle de l'utilisateur.
PCT/CN2022/093927 2022-05-19 2022-05-19 Procédé et appareil de réglage de rétroéclairage, dispositif et support de stockage WO2023221051A1 (fr)

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PCT/CN2022/093927 WO2023221051A1 (fr) 2022-05-19 2022-05-19 Procédé et appareil de réglage de rétroéclairage, dispositif et support de stockage
CN202280004377.7A CN115668349A (zh) 2022-05-19 2022-05-19 背光调整方法、装置、设备及存储介质

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CN113612882A (zh) * 2021-08-17 2021-11-05 RealMe重庆移动通信有限公司 屏幕亮度调节方法、装置、存储介质以及终端

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US20050156949A1 (en) * 2003-12-24 2005-07-21 Tatung Co., Ltd. Method of brightness adjustment for a display device
CN102404440A (zh) * 2010-09-17 2012-04-04 联芯科技有限公司 自动调节背光亮度的方法及装置
CN103247281A (zh) * 2012-02-13 2013-08-14 联想(北京)有限公司 一种调整显示亮度的方法及电子设备
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