WO2016015587A1 - 一种显示设备的背光调节方法、显示设备、计算机程序产品及计算机可读存储介质 - Google Patents

一种显示设备的背光调节方法、显示设备、计算机程序产品及计算机可读存储介质 Download PDF

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Publication number
WO2016015587A1
WO2016015587A1 PCT/CN2015/084822 CN2015084822W WO2016015587A1 WO 2016015587 A1 WO2016015587 A1 WO 2016015587A1 CN 2015084822 W CN2015084822 W CN 2015084822W WO 2016015587 A1 WO2016015587 A1 WO 2016015587A1
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WIPO (PCT)
Prior art keywords
brightness
value
display device
photosensitive
image sensor
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PCT/CN2015/084822
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English (en)
French (fr)
Inventor
邓伟成
栾心林
唐纯杰
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/10—Intensity circuits

Definitions

  • the present disclosure relates to the field of electronic technologies, and in particular, to a backlight adjustment method of a display device, a display device, a computer program product, and a computer readable storage medium.
  • Today's mobile terminal devices such as mobile phones, generally have the function of automatically adjusting the brightness of the screen backlight, which is usually implemented by a photosensitive sensor.
  • the photosensitive sensor adjusts the brightness of the screen by sensing the brightness of the current ambient light, and increases the brightness of the screen when the ambient light is strong; and reduces the brightness of the screen when the ambient light is weak.
  • the photosensitive sensor is affected by factors such as the structure of the opening, the transmittance of the glass, and the difference in the spectrum of the light wave, and cannot truly reflect the perceived light of the human eye in a dark environment.
  • the main purpose of the present disclosure is to provide a backlight adjustment method, a display device, a computer program product, and a computer readable storage medium of a display device, which can overcome the aperture structure, glass transmittance, and light spectrum of the photosensitive sensor in the prior art. Influences such as differences can not truly reflect the human eye's perceived light in the dark environment, and the data collected is very errory.
  • a first aspect of the embodiments of the present disclosure provides a backlight adjustment method of a display device, including:
  • Adjusting the display according to the photosensitive brightness value, a first brightness value of a current environment detected by a first image sensor of the display device, and a second brightness value of a current environment detected by a second image sensor of the display device The backlight brightness of the device.
  • an embodiment of the present disclosure further provides a display device, the display device including a photo sensor, a first image sensor, and a second image sensor, the display device further comprising:
  • a receiving module configured to receive a photosensitive brightness value obtained by the photosensitive sensor detecting a current ambient brightness
  • a processing module configured to: according to the photosensitive brightness value received by the receiving module, a first brightness value of a current environment detected by the first image sensor, and a second brightness value of a current environment detected by the second image sensor Adjusting the backlight brightness of the display device.
  • an embodiment of the present disclosure further provides a computer program product that, when executed, causes a computer to implement a backlight adjustment method of the above display device.
  • an embodiment of the present disclosure further provides a computer readable recording medium having the above computer program product recorded therein.
  • the photosensitive sensor Since the photosensitive sensor is affected by factors such as the aperture structure, the transmittance of the glass, and the difference in the spectrum of the light wave, it cannot reflect the perceived brightness of the human eye in a low light environment, and the current ambient brightness value acquired by the image sensor is sensitive in a low light environment. Stable, it can accurately capture the subtle changes in the current ambient light. Accordingly, embodiments of the present disclosure adjust the backlight brightness of a display device based on the lightness brightness value and the current ambient brightness value detected by the first image sensor and the second image sensor of the display device.
  • the true brightness value of the current environment is more responsive, and the backlight brightness correspondingly adjusted is more suitable for human eyes to view, thereby improving the user experience.
  • FIG. 1 is a schematic flow chart of a first embodiment of a backlight adjustment method of the present disclosure
  • FIG. 2 is a schematic flow chart of a second embodiment of a backlight adjustment method of the present disclosure
  • FIG. 3 is a schematic flow chart of a third embodiment of a backlight adjustment method of the present disclosure.
  • FIG. 4 is a schematic flow chart of a fourth embodiment of a backlight adjustment method of the present disclosure.
  • FIG. 5 is a schematic flow chart of a fifth embodiment of a backlight adjustment method of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a first embodiment of a display device of the present disclosure.
  • FIG. 7 is a schematic structural view of a third embodiment of a display device of the present disclosure.
  • FIG. 8 is a schematic structural view of a fifth embodiment of a display device of the present disclosure.
  • FIG. 1 is a schematic flow chart of a first embodiment of a backlight adjustment method of a display device of the present disclosure.
  • the backlight adjustment method includes:
  • step S11 the current ambient brightness is detected by the photosensitive sensor of the display device to obtain a photosensitive brightness value.
  • the photosensitive sensor may be turned on by the display device in the background, or automatically detected after the backlight of the display device is turned on, or opened by a user-defined operation.
  • Step S12 adjusting the backlight brightness of the display device according to the lightness brightness value, the first brightness value of the current environment detected by the first image sensor of the display device, and the second brightness value of the current environment detected by the second image sensor of the display device.
  • the first image sensor and the second image sensor of the display device can be simultaneously activated, and the brightness of the current ambient light is detected simultaneously with the photosensitive sensor to save detection time, save the steps before the backlight adjustment, and provide the user with accurate time in the first time. Backlight brightness.
  • first image sensor and the second image sensor of the display device may also be sequentially activated to detect the current ambient light with the photosensitive sensor. To save system resources and reduce equipment energy consumption.
  • the first image sensor and the second image sensor are sequentially activated.
  • the brightness of the current ambient light is detected using the image sensor and the photosensitive sensor that can be activated normally; if the first image sensor and the second image are The sensor can not start normally, then the backlight brightness is not adjusted, and a prompt window pops up on the display device screen to remind the user to check whether the current display device status is positive. often.
  • the camera sensor image signal processor can provide a parameter value (ie, a first brightness value or a second brightness value) regarding the current ambient brightness: camera luma.
  • the camera brightness value is mainly used to calculate the shutter time in the camera module.
  • the current camera brightness value as the current ambient brightness value detected by the image sensor.
  • the camera brightness value is sensitive and stable in low light environment, which can accurately capture the subtle changes of the current ambient light.
  • the feedback is fast and the reliability is high.
  • the camera brightness value can assist the photo sensor to make a correct judgment on the brightness of the current ambient light. .
  • the first image sensor is preferably a front image sensor on the display device and the second image sensor is a rear image sensor on the display device.
  • the first image sensor may be an image sensor of a front camera of the mobile phone
  • the second image sensor may be an image sensor of a rear camera of the mobile phone.
  • the front image sensor is in the same brightness environment as the user's eyes. Therefore, the current ambient brightness value collected by the front image sensor can accurately obtain the ambient light brightness perceived by the user's eyes, according to the front. The ambient brightness value obtained by the image sensor to adjust the backlight brightness can lead to a better user experience.
  • the rear image sensor assists the front image sensor to assist the detection of the current ambient brightness, so that the display device has an overall judgment on the ambient brightness, prevents misjudgment caused by uneven illumination of the environment, and improves the reliability of the brightness detection.
  • the photosensitive sensor Since the photosensitive sensor is affected by factors such as the aperture structure, the transmittance of the glass, and the difference in the spectrum of the light wave, it cannot reflect the perceived brightness of the human eye in a low light environment, and the current ambient brightness value acquired by the image sensor is sensitive in a low light environment. Stable, it can accurately capture the subtle changes in the current ambient light. Accordingly, embodiments of the present disclosure adjust the backlight brightness of a display device based on the lightness brightness value and the current ambient brightness value detected by the first image sensor and the second image sensor of the display device.
  • the true brightness value of the current environment is more responsive, and the corresponding backlight brightness is more suitable for human eye viewing, thereby improving the user experience.
  • the image sensor and the photosensor can be used to detect the brightness of the current ambient light, and the hardware resources of the display device are fully utilized to further improve The reliability of ambient brightness detection.
  • FIG. 2 is a schematic flowchart of a second embodiment of a backlight adjustment method of a display device of the present disclosure.
  • the backlight adjustment method includes:
  • step S21 the current ambient brightness is detected by the photosensitive sensor of the display device to obtain a photosensitive brightness value.
  • the photosensitive sensor may be turned on by the display device in the background, or automatically detected after the backlight of the display device is turned on, or opened by a user-defined operation.
  • Step S22 adjusting backlight brightness of the display device according to the lightness brightness value and the current ambient brightness value, wherein the current ambient brightness value is a maximum value of the first brightness value and the second brightness value.
  • the current ambient brightness value may be that the first brightness value and the second brightness value are simultaneously taken once and compared to obtain a larger value; or the first brightness value and the second brightness value may be simultaneously taken multiple times, and The maximum value obtained by comparing all the values; the average value of the first brightness value is averaged, and the plurality of values taken by the second brightness value are averaged, and the two average numbers are compared. The larger value.
  • the first brightness value and the second brightness value are each taken 8 times at the same time, and the time interval is 50 ms, and the larger 4 of the 8 values of the first brightness value are taken and the average is calculated.
  • the first brightness average taking the larger of the 8 values of the second brightness value and calculating the average, defined as the second brightness average
  • the current ambient brightness value is the first brightness average and the first The larger value obtained by comparing the two brightness averages.
  • the maximum value of the first brightness value and the second brightness value is used as the current ambient brightness value, and the backlight brightness is adjusted according to the lightness brightness value and the current ambient brightness value, so that the backlight brightness can be guaranteed for the user in the current maximum ambient brightness condition. Use to enhance the user experience.
  • the larger value of the first brightness average value and the second brightness average value as the environment brightness value, it is possible to effectively avoid interference caused by the detection of ambient light brightness due to factors such as instantaneous flash, and improve the current ambient brightness value. Get reliability.
  • FIG. 3 is a schematic flowchart of a third embodiment of a backlight adjustment method of a display device of the present disclosure.
  • the backlight adjustment method includes:
  • Step S31 detecting the current ambient brightness by the photosensitive sensor of the display device to obtain a photosensitive brightness value.
  • the photosensitive sensor may be displayed by default in the background of the display device or detected by the display device. It is automatically turned on after the backlight is turned on, or is turned on by a user-defined operation.
  • Step S32 determining that the photosensitive brightness value is within a preset photosensitive brightness range, and detecting a change in the current ambient brightness by the photosensitive sensor to obtain a photosensitive brightness change value.
  • the preset photosensitive brightness range is specifically the brightness range corresponding to the low light environment, and the specific range value may be [1, 20) lux.
  • the so-called light-sensitive brightness change value is the difference between the light-sensitive brightness value currently obtained by the photosensitive sensor and the light-sensitive brightness value obtained in the previous cycle (which may be predefined according to the situation). After the photosensitive brightness value periodically detected by the photosensitive sensor falls into the preset photosensitive brightness range only once or continuously, it can be determined that the photosensitive brightness value is within the preset photosensitive brightness range.
  • the photosensitive brightness value periodically detected by the photosensitive sensor falls into the preset photosensitive brightness range after a plurality of times (for example, 8 times), and then the photosensitive brightness value is determined to be in a preset photosensitive brightness range, thereby avoiding the photosensitive jitter. Brings the image sensor on and off frequently.
  • step S33 the photosensitive brightness change value is compared with the first threshold. If the light brightness change value is greater than the first threshold, step S34 is performed, and if it is less than the first threshold, step S35 is performed.
  • the photosensitive brightness change value is greater than 10 lux
  • the ambient brightness of the display device is changed, and the image brightness value as the first brightness value and the second brightness value is acquired by the camera sensor image signal processor.
  • the backlight brightness is adjusted based on the current ambient brightness value, so that the current backlight brightness is more suitable for the current user's use environment.
  • Step S34 The current ambient brightness is detected by the first image sensor and the second image sensor to obtain a current ambient brightness value, and the backlight brightness is adjusted according to the current ambient brightness value.
  • the backlight brightness may be adjusted only according to the current ambient brightness value, or may be based on the first brightness value, the second brightness value, and the current light sensitivity.
  • the brightness value adjusts the brightness of the backlight.
  • step S35 the current backlight brightness is kept unchanged.
  • the ongoing camera assist determination can be immediately stopped without the need for an automatic backlight (so-called camera assist determination is to turn on the camera sensor image signal processor and acquire the image brightness value as the ambient brightness value).
  • camera assist determination is to turn on the camera sensor image signal processor and acquire the image brightness value as the ambient brightness value.
  • the case where the automatic backlight is not needed includes the following: the automatic backlight is automatically turned off while the mobile phone is running; the screen state enters the dark screen, or the screen is off (the manual screen is off or the timeout is off); the proximity sensor state is switched to be close; the mobile phone is in the battery state.
  • the super power saving mode does not start the camera assisted judgment; enter the call In the state, the call, the incoming call, and the answering state do not start the camera assisted judgment; when the auxiliary judgment is in progress, the above state occurs, and the auxiliary judgment needs to be stopped immediately.
  • the camera assisted judgment is not turned on in any of the above cases.
  • the photosensitive brightness value is periodically acquired by the photosensitive sensor, and the photosensitive brightness value is preset.
  • the first image sensor and the second image sensor are used to obtain the current ambient brightness value, and the current image brightness value is successfully obtained by the first image sensor and the second image sensor when the photosensitive brightness change value is greater than the first threshold. After that, turn it off to save power and avoid the purpose of frequently turning on the first image sensor and the second image sensor.
  • FIG. 4 is a schematic flowchart of a fourth embodiment of a backlight adjustment method of a display device of the present disclosure.
  • the backlight adjustment method includes:
  • step S41 the current ambient brightness is detected by the photosensitive sensor of the display device to obtain a photosensitive brightness value.
  • the photosensitive sensor may be turned on by the display device in the background, or automatically detected after the backlight of the display device is turned on, or opened by a user-defined operation.
  • Step S42 if the photosensitive brightness value is outside the preset photosensitive brightness range and enters the preset photosensitive brightness range, the first image sensor and the second image sensor are turned on to detect the current ambient brightness, and the current ambient brightness value is obtained, and according to the current The ambient brightness value adjusts the backlight brightness.
  • the preset brightness range is specifically a brightness range corresponding to a low light environment, and the specific range value may be [1, 17) lux.
  • “turning on the first image sensor and the second image sensor to detect the current ambient brightness, obtaining the current ambient brightness value, and adjusting the backlight brightness according to the current ambient brightness value” is the same as step S34 described in detail above, so here Do not repeat them.
  • the preset light-sensitive brightness range is redefined to [1, 20) lux, which effectively prevents the ambient brightness from approaching 17 lux.
  • the display device repeatedly switches between different lighting environments, which imposes a burden on the system.
  • the corresponding camera sensor image signal processor is turned on and the image brightness value as the ambient brightness value is acquired, and the change of the current ambient brightness is detected by the light sensor to obtain the lightness brightness. Change value. If the photosensitive brightness change value is greater than the first threshold, detecting the current ambient brightness by the first image sensor and the second image sensor, The current ambient brightness value is obtained, and the backlight brightness is adjusted according to the current ambient brightness value; if the photosensitive brightness change value is less than the first threshold, the current backlight brightness is maintained.
  • the photosensitive sensor detects that the photosensitive brightness value still does not fall within the range of [1, 20) lux, it is judged that the current environment has exited the low light environment, and the preset photosensitive brightness range value is restored [1, 17) lux.
  • the camera assists the determination and adjusts the brightness of the backlight to give the user a fast and accurate use experience.
  • FIG. 5 is a schematic flowchart of a fifth embodiment of a backlight adjustment method of a display device of the present disclosure.
  • the backlight adjustment method includes:
  • step S51 the current ambient brightness is detected by the photosensitive sensor of the display device to obtain a photosensitive brightness value.
  • the photosensitive sensor may be turned on by the display device in the background, or automatically detected after the backlight of the display device is turned on, or opened by a user-defined operation.
  • Step S52 determining that the photosensitive brightness value is greater than the upper limit value of the preset photosensitive brightness range, adjusting the backlight brightness of the display device based on the photosensitive brightness value.
  • the photosensitive brightness value is greater than the upper limit of the preset photosensitive brightness range
  • system resources are saved, the image brightness is determined to be assisted, and the brightness of the backlight is controlled by the photosensitive sensor.
  • Step S53 determining that the photosensitive brightness value is less than the lower limit value of the preset photosensitive brightness range, detecting the current ambient brightness by the first image sensor and the second image sensor, and obtaining the current ambient brightness value, if the current ambient brightness value is less than the second Threshold, the preset minimum backlight brightness is taken as the current backlight brightness.
  • the photosensitive brightness value is not greater than the upper limit of the preset light-sensitive brightness range, it is further determined whether the light-sensitive brightness value is less than a lower limit value of the preset light-sensitive brightness range.
  • the lower limit value tends to 0 lux.
  • the photosensor detects that the current photosensitive brightness value is 0 lux
  • the current image brightness value is detected by the first image sensor and the second image sensor to determine whether the current ambient brightness value is less than the second threshold value.
  • the second threshold value is a brightness value corresponding to the usage environment of the all black environment, and if yes, determining that the current display device usage environment is an all black environment, so that Use the minimum backlight brightness as the current backlight brightness.
  • the lower limit value of the photosensitive brightness range is redefined as 2 lux.
  • the display device may be a display device with a backlight adjustment function such as a mobile phone, a tablet computer, an MP3, an MP4, or a notebook computer.
  • FIG. 6 is a schematic structural diagram of a first embodiment of a display device of the present disclosure.
  • the display device 100 includes a photosensor 110, a first image sensor 120, a second image sensor 130, a receiving module 140, and a processing module 150.
  • the receiving module 140 is respectively connected to the photosensor 110 and the processing module 150, and is configured to receive the photosensitive brightness value obtained by the photosensor to detect the current ambient brightness.
  • the processing module 150 is connected to the first image sensor 120, the second image sensor 130, and the receiving module 140, respectively, for determining the current brightness of the current environment detected by the photosensor 110, and the current environment detected by the first image sensor 120.
  • the first brightness value and the second brightness value of the current environment detected by the second image sensor 130 adjust the backlight brightness of the display device 100.
  • the first image sensor 120 and the second image sensor 130 of the display device 100 can be simultaneously activated, and the brightness of the current ambient light is detected simultaneously with the photosensitive sensor 110 to save detection time and save the steps before the backlight adjustment.
  • the first time is Users provide accurate backlight brightness.
  • first image sensor 120 and the second image sensor 130 of the display device 100 may also be sequentially activated to detect the current ambient light with the photosensor 110, respectively.
  • the first image sensor 120 and the second image sensor 130 are sequentially activated.
  • the brightness of the current ambient light is detected using the image sensor that can be activated normally and the photosensitive sensor 110; if the first image sensor 120 And the second image sensor 130 cannot start normally. Move, the backlight brightness is not adjusted, and a prompt window pops up on the display device screen to remind the user to check whether the current display device status is normal.
  • the camera sensor image signal processor can provide a parameter value (ie, a first brightness value or a second brightness value) regarding the current ambient brightness: the camera brightness.
  • the camera brightness value is mainly used in the camera module to calculate the shutter time. Here we can use the camera brightness value as the current ambient brightness value detected by the image sensor.
  • the camera brightness value is sensitive and stable in low light environment, which can accurately capture the subtle changes of the current ambient light.
  • the feedback is fast and the reliability is high.
  • the current camera brightness value can assist the photosensor to make the correct brightness of the current ambient light. Judge.
  • the first image sensor 120 is preferably a front image sensor on the display device 100
  • the second image sensor 130 is a rear image sensor on the display device 100
  • the first image sensor may be an image sensor of a front camera of the mobile phone
  • the second image sensor may be an image sensor of a rear camera of the mobile phone.
  • the front image sensor is in the same brightness environment as the user's eyes. Therefore, the current ambient brightness value collected by the front image sensor can accurately obtain the ambient light brightness perceived by the user's eyes, according to the front. The ambient brightness value obtained by the image sensor to adjust the backlight brightness can lead to a better user experience.
  • the rear image sensor assists the front image sensor to assist the detection of the current ambient brightness, so that the display device has an overall judgment on the ambient brightness, prevents misjudgment caused by uneven illumination of the environment, and improves the reliability of the brightness detection.
  • the photosensitive sensor Since the photosensitive sensor is affected by factors such as the aperture structure, the transmittance of the glass, and the difference in the spectrum of the light wave, it cannot reflect the perceived brightness of the human eye in a low light environment, and the current ambient brightness value acquired by the image sensor is sensitive in a low light environment. Stable, it can accurately capture the subtle changes in the current ambient light. Accordingly, embodiments of the present disclosure adjust the backlight brightness of a display device based on the lightness brightness value and the current ambient brightness value detected by the first image sensor and the second image sensor of the display device.
  • the true brightness value of the current environment is more responsive, and the corresponding backlight brightness is more suitable for human eye viewing, thereby improving the user experience.
  • the image sensor and the photosensor 110 can be used to detect the brightness of the current ambient light, and the hardware of the display device 100 is fully utilized. Resources have been further improved Reliability of ambient brightness detection.
  • the second embodiment of the display device of the present disclosure is different from the first embodiment of the display device described above, the processing module 150 is specifically configured to use the light-sensitive brightness value received by the receiving module 140, and the current The ambient brightness value is adjusted to adjust the backlight brightness of the display device 100, and the current ambient brightness value is a maximum value of the first brightness value and the second brightness value.
  • the current ambient brightness value may be that the first brightness value and the second brightness value are simultaneously taken once and compared to obtain a larger value; or the first brightness value and the second brightness value may be simultaneously taken multiple times, and The maximum value obtained by comparing all the values; the average value of the first brightness value is averaged, and the plurality of values taken by the second brightness value are averaged, and the two average numbers are compared. The larger value.
  • the first brightness value and the second brightness value are each taken 8 times at the same time, and the time interval is 50 ms, and the larger 4 of the 8 values of the first brightness value are taken and the average is calculated.
  • the first brightness average taking the larger of the 8 values of the second brightness value and calculating the average, defined as the second brightness average
  • the current ambient brightness value is the first brightness average and the first The larger value obtained by comparing the two brightness averages.
  • the maximum value of the first brightness value and the second brightness value is used as the current ambient brightness value, and the backlight brightness is adjusted according to the lightness brightness value and the current ambient brightness value, so that the backlight brightness can be guaranteed for the user in the current maximum ambient brightness condition. Use to enhance the user experience.
  • the larger value of the first brightness average value and the second brightness average value as the environment brightness value, it is possible to effectively avoid interference caused by the detection of ambient light brightness due to factors such as instantaneous flash, and improve the current ambient brightness value. Get reliability.
  • FIG. 7 is a schematic structural diagram of a third embodiment of a display device of the present disclosure.
  • the processing module 150 includes:
  • the photosensitive brightness change value obtaining unit 151 is configured to determine that the light-sensitive brightness value detected by the light-sensitive sensor 110 is within a preset light-sensitive brightness range, and the photo-sensing sensor 110 detects a change in the current ambient brightness to obtain a light-sensitive brightness change value.
  • the preset photosensitive brightness range is specifically the brightness range corresponding to the low light environment, and the specific range value may be [1, 20) lux.
  • the so-called light-sensitive brightness change value is the difference between the light-sensitive brightness value currently obtained by the photosensitive sensor and the light-sensitive brightness value obtained in the previous cycle (which may be predefined according to the situation). Passing After the photosensitive brightness value periodically detected by the photosensitive sensor falls into the preset photosensitive brightness range only once or continuously, it can be determined that the photosensitive brightness value is within the preset photosensitive brightness range.
  • the photosensitive brightness value periodically detected by the photosensitive sensor falls into the preset photosensitive brightness range after a plurality of times (for example, 8 times), and then the photosensitive brightness value is determined to be in a preset photosensitive brightness range, thereby avoiding the photosensitive jitter. Brings the image sensor on and off frequently.
  • the first adjusting unit 152 is configured to detect the current image sensor 120 and the second image sensor 130 by using the first image sensor 120 and the second image sensor 130 if the photosensitive brightness change value acquired by the light-sensitive brightness change value acquiring unit 151 is greater than a first threshold The ambient brightness is obtained, and the current ambient brightness value is obtained, and the backlight brightness is adjusted according to the current ambient brightness value; if the photosensitive brightness change value is less than the first threshold, the current backlight brightness is kept unchanged.
  • the photosensitive brightness change value is greater than 10 lux
  • the ambient brightness of the display device is changed, and the image brightness value as the first brightness value and the second brightness value is acquired by the camera sensor image signal processor.
  • the backlight brightness is adjusted based on the current ambient brightness value, so that the current backlight brightness is more suitable for the current user's use environment.
  • the backlight brightness may be adjusted only according to the current ambient brightness value, or may be according to the first brightness value and the second brightness value. Adjust the backlight brightness with the current lightness value.
  • the ongoing camera assist determination can be immediately stopped without the need for an automatic backlight (so-called camera assist determination is to turn on the camera sensor image signal processor and acquire the image brightness value as the ambient brightness value).
  • camera assist determination is to turn on the camera sensor image signal processor and acquire the image brightness value as the ambient brightness value.
  • the case where the automatic backlight is not needed includes the following: the automatic backlight is automatically turned off while the mobile phone is running; the screen state enters the dark screen, or the screen is off (the manual screen is off or the timeout is off); the proximity sensor state is switched to be close; the mobile phone is in the battery state. Switch to the super power-saving mode.
  • the super power-saving mode does not start the camera-assisted judgment; when entering the call state, the camera-assisted judgment is not started in the call, incoming call, and answering state; the above state occurs when the auxiliary judgment is being performed.
  • the camera assisted judgment is not turned on in any of the above cases.
  • the photosensitive brightness value is periodically acquired by the photosensitive sensor, and the photosensitive brightness value is preset. Photosensitive brightness range, and the photosensitive brightness change value is greater than When the first threshold is used, the first image sensor and the second image sensor are turned on to obtain the current ambient brightness value, and after the first image sensor and the second image sensor obtain the current ambient brightness value successfully, the device is turned off to save power and Avoid the purpose of frequently turning on the first image sensor and the second image sensor.
  • the processing module 150 is further configured to: if the photosensitive brightness value received by the receiving module 140 is Setting the photosensitive brightness range outside the preset photosensitive brightness range, turning on the first image sensor 120 and the second image sensor 130 to detect the current ambient brightness, obtaining the current ambient brightness value, and according to the The current ambient brightness value adjusts the backlight brightness.
  • the preset brightness range is specifically a brightness range corresponding to a low light environment, and the specific range value may be [1, 17) lux.
  • “turning on the first image sensor and the second image sensor to detect the current ambient brightness, obtaining the current ambient brightness value, and adjusting the backlight brightness according to the current ambient brightness value” is the same as step S34 described in detail above, so here Do not repeat them.
  • the preset light-sensitive brightness range is redefined to [1, 20) lux, which effectively prevents the ambient brightness from approaching 17 lux.
  • the display device repeatedly switches between different lighting environments, which imposes a burden on the system.
  • the corresponding camera sensor image signal processor is turned on and the image brightness value as the ambient brightness value is acquired, and the change of the current ambient brightness is detected by the light sensor to obtain the lightness brightness. Change value. If the photosensitive brightness change value is greater than the first threshold, the current ambient brightness is detected by the first image sensor and the second image sensor to obtain a current ambient brightness value, and the backlight brightness is adjusted according to the current ambient brightness value; if the photosensitive brightness change value is less than the first threshold, Keep the current backlight brightness unchanged.
  • the photosensitive sensor detects that the photosensitive brightness value still does not fall within the range of [1, 20) lux, it is judged that the current environment has exited the low light environment, and the preset photosensitive brightness range value is restored [1, 17) lux.
  • the camera assists the determination and adjusts the brightness of the backlight to give the user a fast and accurate use experience.
  • FIG. 8 is a schematic structural diagram of a fifth embodiment of a display device of the present disclosure.
  • the processing module 150 includes:
  • the second adjusting unit 153 is configured to determine that the light-sensitive brightness value received by the receiving module 140 is greater than an upper limit value of the preset light-sensitive brightness range, and then adjust the display device 100 based on the light-sensitive brightness value. Backlight brightness;
  • the third adjusting unit 154 is configured to determine that the photosensitive brightness value received by the receiving module 140 is less than a lower limit value of the preset photosensitive brightness range, and then passes through the first image sensor 120 and the second image.
  • the sensor 130 detects the current ambient brightness to obtain the current ambient brightness value. If the current ambient brightness value is less than the second threshold, the preset minimum backlight brightness is used as the current backlight brightness.
  • the photosensitive brightness value is greater than the upper limit of the preset photosensitive brightness range
  • system resources are saved, the image brightness is determined to be assisted, and the brightness of the backlight is controlled by the photosensitive sensor.
  • the photosensitive brightness value is not greater than the upper limit of the preset light-sensitive brightness range, it is further determined whether the light-sensitive brightness value is less than a lower limit value of the preset light-sensitive brightness range.
  • the lower limit value tends to 0 lux.
  • the photosensor detects that the current photo brightness value is 0 lux
  • the current image brightness value is detected by the first image sensor 120 and the second image sensor 130 to determine whether the current ambient brightness value is less than the second threshold.
  • the second threshold value is a brightness value corresponding to the usage environment, and the current environment of the display device 100 is determined to be a full black environment, and the minimum backlight brightness is used as the current backlight brightness.
  • the lower limit value of the photosensitive brightness range is redefined as 2 lux.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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Abstract

一种显示设备的背光调节方法及显示设备，包括通过所述显示设备（100）的光敏传感器（110）检测当前环境亮度，得到光敏亮度值；根据所述光敏亮度值、所述显示设备（100）的第一图像传感器（120）检测的当前环境的第一亮度值、以及所述显示设备（100）的第二图像传感器（130）检测的当前环境亮度的第二亮度值，调节所述显示设备（100）的背光亮度，该背光调节方法能够实现对环境光的准确判断，用户体验好。

Description

一种显示设备的背光调节方法、显示设备、计算机程序产品及计算机可读存储介质
相关申请的交叉参考
本申请主张在2014年07月31日在中国提交的中国专利申请号No.201410374560.3的优先权，其全部内容通过引用包含于此。
技术领域
本公开文本涉及电子技术领域，尤其涉及一种显示设备的背光调节方法、显示设备、计算机程序产品及计算机可读存储介质。
背景技术
现在的移动终端设备如手机一般都有自动调节屏幕背光亮度的功能，通常采用光敏传感器来实现。光敏传感器通过感知当前环境光亮度来调节屏幕亮度，当环境光强时，提高屏幕亮度；当环境光弱时，降低屏幕亮度。
在实现本发明过程中，发明人发现现有技术中存在如下问题：
光敏传感器受开孔结构、玻璃透光率、光波频谱差异等因素影响，无法在暗环境下真实反映人眼感知光亮。
发明内容
(一)要解决的技术问题
本公开文本的主要目的在于提供一种显示设备的背光调节方法、显示设备、计算机程序产品及计算机可读存储介质，能够克服现有技术中光敏传感器受开孔结构、玻璃透光率、光波频谱差异等因素影响，无法在暗环境下真实反映人眼感知光亮，且采集到的数据误差很大等问题。
(二)技术方案
相应的，本公开文本实施例的第一方面提供了一种显示设备的背光调节方法，包括：
通过所述显示设备的光敏传感器检测当前环境亮度，得到光敏亮度值； 以及
根据所述光敏亮度值、所述显示设备的第一图像传感器检测的当前环境的第一亮度值、以及所述显示设备的第二图像传感器检测的当前环境的第二亮度值，调节所述显示设备的背光亮度。
根据本公开文本实施例的第二方面，本公开文本实施例还提供了一种显示设备，所述显示设备包括光敏传感器、第一图像传感器和第二图像传感器，所述显示设备还包括：
接收模块，用于接收所述光敏传感器检测当前环境亮度得到的光敏亮度值；以及
处理模块，用于根据所述接收模块接收的所述光敏亮度值、所述第一图像传感器检测的当前环境的第一亮度值、以及所述第二图像传感器检测的当前环境的第二亮度值，调节所述显示设备的背光亮度。
根据本公开文本实施例的第三方面，本公开文本实施例还提供了一种计算机程序产品，当所述计算机程序产品被执行时使得计算机实现上述显示设备的背光调节方法。
根据本公开文本实施例的第四方面，本公开文本实施例还提供了一种计算机可读记录介质，在其中记录有上述计算机程序产品。
(三)有益效果
本公开文本实施例至少具有如下有益效果：
由于光敏传感器受开孔结构、玻璃透光率、光波频谱差异等因素影响，无法在弱光环境下真实反映人眼感知光亮，而图像传感器的获取的当前环境亮度值在弱光环境下敏感且稳定，可以精确的捕捉当前环境光线的细微改变。因此，本公开文本实施例根据光敏亮度值，以及显示设备的第一图像传感器、第二图像传感器检测的当前环境亮度值，调节显示设备的背光亮度。这样，结合光敏亮度值和第一图像传感器、第二图像传感器检测的当前环境亮度值，更能反应当前环境的真实亮度值，相应调节地背光亮度更适于人眼观看，从而提高了用户体验。
附图说明
为了更清楚地说明本公开文本实施例或现有技术中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开文本的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本公开文本显示设备的背光调节方法的第一实施例的流程示意图；
图2是本公开文本显示设备的背光调节方法的第二实施例的流程示意图；
图3是本公开文本显示设备的背光调节方法的第三实施例的流程示意图；
图4是本公开文本显示设备的背光调节方法的第四实施例的流程示意图；
图5是本公开文本显示设备的背光调节方法的第五实施例的流程示意图；
图6是本公开文本的显示设备的第一实施例的结构示意图；
图7是本公开文本的显示设备的第三实施例的结构示意图；以及
图8是本公开文本的显示设备的第五实施例的结构示意图。
具体实施方式
下面结合附图和实施例，对本公开文本的具体实施方式做进一步描述。以下实施例仅用于说明本公开文本，但不用来限制本公开文本的范围。
为使本公开文本实施例的目的、技术方案和优点更加清楚，下面将结合本公开文本实施例的附图，对本公开文本实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本公开文本的一部分实施例，而不是全部的实施例。基于所描述的本公开文本的实施例，本领域普通技术人员所获得的所有其他实施例，都属于本公开文本保护的范围。
除非另作定义，此处使用的技术术语或者科学术语应当为本公开文本所属领域内具有一般技能的人士所理解的通常意义。本公开文本专利申请说明书以及权利要求书中使用的“第一”、“第二”以及类似的词语并不表示任何 顺序、数量或者重要性，而只是用来区分不同的组成部分。同样，“一个”或者“一”等类似词语也不表示数量限制，而是表示存在至少一个。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。“上”、“下”、“左”、“右”、“前”、“后”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也相应地改变。
为了使本公开文本所解决的技术问题、技术方案及有益效果更加清楚明白，以下结合附图及实施例，对本公开文本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公开文本，并不用于限定本公开文本。
请参照图1，图1是本公开文本的显示设备的背光调节方法的第一实施例的流程示意图。该背光调节方法包括：
步骤S11，通过显示设备的光敏传感器检测当前环境亮度，得到光敏亮度值。
所述光敏传感器可以是显示设备后台默认开启的、或者是检测到显示设备背光开启后自动开启的、或者是由用户自定义操作开启的。
步骤S12，根据光敏亮度值、显示设备的第一图像传感器检测的当前环境的第一亮度值、以及显示设备的第二图像传感器检测的当前环境的第二亮度值，调节显示设备的背光亮度。
显示设备的第一图像传感器和第二图像传感器可以同时启动，与光敏传感器同时对当前环境光的明亮程度进行检测，以节约检测时间，节省背光调节前的步骤，第一时间为用户提供准确的背光亮度。
另外，显示设备的第一图像传感器和第二图像传感器也可以依次启动，分别与光敏传感器对当前环境光线进行检测。以节省系统资源，降低设备能耗。例如，在本实施例中，第一图像传感器和第二图像传感器为依次启动。
在本实施例中，若第一图像传感器和第二图像传感器之一无法正常启动，则使用可启动正常的图像传感器与光敏传感器检测当前环境光的明亮程度；若第一图像传感器和第二图像传感器均无法正常启动，则不调节背光亮度，并在显示设备屏幕上弹出提示窗口，提醒用户检查当前显示设备状态是否正 常。
摄像头传感器图像信号处理器(camera sensor isp)可以提供一个关于当前环境亮度的参数值(即第一亮度值或第二亮度值)：摄像亮度(camera luma)。摄像亮度值在摄像头(camera)模块主要用于计算快门时间。这里我们可以将当前摄像亮度值作为图像传感器检测的当前环境亮度值。
摄像亮度值在弱光环境下敏感且稳定，可以精确的捕捉当前环境光线的细微改变，反馈迅速、可靠性高，通过摄像亮度值可以辅助光敏传感器对当前环境光的明亮程度做出正确的判断。
在本实施例中，第一图像传感器优选地为显示设备上的前置图像传感器，第二图像传感器为显示设备上的后置图像传感器。以手机为例，所述第一图像传感器可以为手机的前置摄像头的图像传感器，所述第二图像传感器可以为手机的后置摄像头的图像传感器。一般情况下，前置的图像传感器与用户的眼睛处于同一亮度环境中，因此，通过前置的图像传感器采集的当前环境亮度值，更能准确获取用户眼睛所感知的环境光亮度，根据前置图像传感器获取的环境亮度值来调整背光亮度可以带来更佳的用户体验。同时，后置的图像传感器辅助前置图像传感器对当前环境亮度进行辅助检测，使显示设备对环境亮度具有整体判断，防止因环境光照不均匀导致的误判情况，提高亮度检测可靠性。
由于光敏传感器受开孔结构、玻璃透光率、光波频谱差异等因素影响，无法在弱光环境下真实反映人眼感知光亮，而图像传感器的获取的当前环境亮度值在弱光环境下敏感且稳定，可以精确的捕捉当前环境光线的细微改变。因此，本公开文本实施例根据光敏亮度值，以及显示设备的第一图像传感器、第二图像传感器检测的当前环境亮度值，调节显示设备的背光亮度。这样，结合光敏亮度值和第一图像传感器、第二图像传感器检测的当前环境亮度值，更能反应当前环境的真实亮度值，相应调节地背光亮度更适于人眼观看，提高了用户体验。同时，当所述第一图像传感器和第二图像传感器之一无法正常启动时，可使用可正常工作的图像传感器与光敏传感器检测当前环境光的明亮程度，充分利用显示设备的硬件资源，进一步提高了环境亮度检测的可靠性。
请参照图2，是本公开文本的显示设备的背光调节方法的第二实施例的流程示意图。该背光调节方法包括：
步骤S21，通过显示设备的光敏传感器检测当前环境亮度，得到光敏亮度值。
所述光敏传感器可以是显示设备后台默认开启的、或者是检测到显示设备背光开启后自动开启的、或者是由用户自定义操作开启的。
步骤S22，根据光敏亮度值，以及当前环境亮度值，调节所述显示设备的背光亮度，所述当前环境亮度值为第一亮度值和第二亮度值中的最大值。
当前环境亮度值可以是第一亮度值和第二亮度值各同时取值一次，并相比较得到的较大值；也可以是第一亮度值和第二亮度值各同时取值多次，并将所有值相比较得到的最大值；还可以是将第一亮度值所取的若干值取平均数，将第二亮度值所取的若干值取平均数，将上述两个平均数相比较得到的较大值。
在本实施例中，所述第一亮度值和第二亮度值各同时取值8次，取值时间间隔为50ms，取第一亮度值中8个数值中较大的4个并计算平均数，定义为第一亮度平均数，取第二亮度值中8个数值中较大的4个并计算平均数，定义为第二亮度平均数，当前环境亮度值为将第一亮度平均数与第二亮度平均数相比较得到的较大值。
以第一亮度值和第二亮度值的最大值作为当前环境亮度值，并根据光敏亮度值和当前环境亮度值调节背光亮度，使该背光亮度能保证在当前最大环境亮度的情况下供用户正常使用，提升用户使用体验。同时，通过以第一亮度平均值和第二亮度平均值的较大值作为环境亮度值的方案，能有效避免因瞬间闪光等因素对环境光明亮程度的检测造成干扰，提高当前环境亮度值的获取可靠性。
请参照图3，是本公开文本的显示设备的背光调节方法的第三实施例的流程示意图。该背光调节方法包括：
步骤S31，通过显示设备的光敏传感器检测当前环境亮度，得到光敏亮度值。
所述光敏传感器可以是显示设备后台默认开启的、或者是检测到显示设 备背光开启后自动开启的、或者是由用户自定义操作开启的。
步骤S32，确定所述光敏亮度值位于预设的光敏亮度范围之内，通过所述光敏传感器检测当前环境亮度的变化，得到光敏亮度变化值。
预设的光敏亮度范围具体为弱光环境所对应的亮度范围，其具体范围值可为[1，20)lux。所谓光敏亮度变化值即为光敏传感器当前获取的光敏亮度值和上一周期(该周期可以根据情况预定义)获取的光敏亮度值的差值。在通过光敏传感器周期性检测的光敏亮度值仅一次或连续多次落入预设的光敏亮度范围后，即可确定光敏亮度值位于预设的光敏亮度范围之内。本步骤中，优选光敏传感器周期性检测的光敏亮度值连续多次(如8次)落入预设的光敏亮度范围后，则确定光敏亮度值位于预设的光敏亮度范围，从而避免由于光敏抖动带来图像传感器的频繁开启和关闭。
步骤S33，将光敏亮度变化值与第一阈值比较，若光敏亮度变化值大于第一阈值，则执行步骤S34，若小于第一阈值，则执行步骤S35。
在本步骤中，若光敏亮度变化值大于10lux，则确定显示设备当前所处的环境亮度发生了改变，通过摄像头传感器图像信号处理器获取作为第一亮度值、第二亮度值的摄像亮度值，并基于当前环境亮度值对背光亮度进行调节，以使当前背光亮度更适合当前用户的使用环境。
步骤S34，通过所述第一图像传感器和所述第二图像传感器检测当前环境亮度，得到当前环境亮度值，根据当前环境亮度值调节背光亮度。
在本步骤中，在通过第一图像传感器和第二图像传感器成功获取当前环境亮度值后，可以仅根据当前环境亮度值调节背光亮度，也可以根据第一亮度值、第二亮度值和当前光敏亮度值调节背光亮度。
步骤S35，保持当前背光亮度不变。
在本实施例中，在不需要自动背光的情况下可以立即停止正在进行的摄像头辅助判断(所谓开启摄像头辅助判断即开启摄像头传感器图像信号处理器并获取作为环境亮度值的摄像亮度值)。其中不需要自动背光的情况包含以下几种：手机正在运行中自动关闭自动背光；屏幕状态进入暗屏，或者灭屏(手动灭屏或者超时灭屏)；接近传感器状态切换为靠近；手机续航状态切换为超级省电模式，同时，超级省电模式下一律不启动摄像头辅助判断；进入通话 状态，呼叫、呼入、接听状态下均不启动摄像头辅助判断；正在进行辅助判断时发生上面的状态，需要立即停止辅助判断时。上述任一情况均不开启摄像头辅助判断。
由于长时间开启第一图像传感器、第二图像传感器会很快消耗掉显示设备特别是手机的电能，因此，本公开文本实施例由光敏传感器周期性获取光敏亮度值，在光敏亮度值位于预设的光敏亮度范围，且光敏亮度变化值大于第一阈值时，才开启第一图像传感器、第二图像传感器获取当前环境亮度值，并在第一图像传感器、第二图像传感器获取当前环境亮度值成功后，将其关闭，以达到省电和避免频繁开启第一图像传感器、第二图像传感器的目的。
请参照图4，是本公开文本的显示设备的背光调节方法的第四实施例的流程示意图。该背光调节方法包括：
步骤S41，通过显示设备的光敏传感器检测当前环境亮度，得到光敏亮度值。
所述光敏传感器可以是显示设备后台默认开启的、或者是检测到显示设备背光开启后自动开启的、或者是由用户自定义操作开启的。
步骤S42，若光敏亮度值由预设的光敏亮度范围之外进入预设的光敏亮度范围之内，开启第一图像传感器和第二图像传感器检测当前环境亮度，得到当前环境亮度值，并根据当前环境亮度值调节背光亮度。
其中，预设的光敏亮度范围具体为弱光环境所对应的亮度范围，其具体范围值可为[1，17)lux。本步骤中，“开启第一图像传感器和第二图像传感器检测当前环境亮度，得到当前环境亮度值，并根据当前环境亮度值调节背光亮度”与在上文中详细介绍的步骤S34相同，故在此不赘述。
在确定光敏亮度值位于预设的光敏亮度范围之内(即弱光环境下)后，将预设的光敏亮度范围重新定义至[1，20)lux，可有效防止因环境亮度接近17lux而导致显示设备在不同的光线环境下反复切换，给系统造成负担。
进一步地，在确认显示设备当前位于弱光环境下时，开启相应的摄像头传感器图像信号处理器并获取作为环境亮度值的摄像亮度值，通过所述光敏传感器检测当前环境亮度的变化，得到光敏亮度变化值。若光敏亮度变化值大于第一阈值，通过第一图像传感器和第二图像传感器检测当前环境亮度， 得到当前环境亮度值，根据当前环境亮度值调节背光亮度；若光敏亮度变化值小于第一阈值，保持当前背光亮度不变。
进一步地，若光敏传感器检测到光敏亮度值仍有一次未落在[1，20)lux范围内，则判断当前环境退出了弱光环境，并恢复所述预设的光敏亮度范围值[1，17)lux。
通过对光敏亮度值的实时检测，在确认光敏亮度值进入预设的光敏亮度范围之内的第一时间，启动摄像头辅助判断并对背光亮度进行调节，给用户以快速准确的使用体验。
请参照图5，是本公开文本的显示设备的背光调节方法的第五实施例的流程示意图。该背光调节方法包括：
步骤S51，通过显示设备的光敏传感器检测当前环境亮度，得到光敏亮度值。
所述光敏传感器可以是显示设备后台默认开启的、或者是检测到显示设备背光开启后自动开启的、或者是由用户自定义操作开启的。
步骤S52，确定光敏亮度值大于预设的光敏亮度范围的上限值，则基于光敏亮度值，调节显示设备的背光亮度。
在本实施例中，当所述光敏亮度值大于所述预设的光敏亮度范围的上限时，为了简化判断流程，节省系统资源，关闭摄像亮度辅助判断，通过光敏传感器对背光亮度进行控制。
步骤S53，确定光敏亮度值小于预设的光敏亮度范围的下限值，则通过第一图像传感器和第二图像感器检测当前环境亮度，得到当前环境亮度值，若当前环境亮度值小于第二阈值，则将预设的最小背光亮度作为当前背光亮度。
当所述光敏亮度值不大于所述预设的光敏亮度范围的上限时，进一步判断所述光敏亮度值是否小于所述预设的光敏亮度范围的下限值，在本实施例中，取所述下限值趋于0lux，当光敏传感器检测到当前光敏亮度值为0lux时，通过第一图像传感器和第二图像传感器检测当前环境亮度值，判断当前环境亮度值是否小于第二阀值，在本实施例中，所述第二阀值为使用环境为全黑环境对应的亮度值，若是，则判断当前显示设备的使用环境为全黑环境，使 用最小背光亮度作为当前背光亮度。同理，为了进一步避免光敏抖动，在判断当前显示设备的使用环境为全黑环境后，将所述光敏亮度范围的下限值重定义为2lux。
通过实时对光敏亮度值进行检测，当所述光敏亮度值位于所述预设的光敏亮度范围之外时，提供相应的解决方案，能有效节约显示设备能源，节省系统资源。
上文对本公开文本的显示设备的背光调节方法的实施例作了详细介绍。下面将相应于上述方法的装置(即显示设备)作进一步阐述。其中，显示设备可以是手机、平板电脑、MP3、MP4或笔记本电脑等带背光调节功能的显示设备。
请参照图6，是本公开文本的显示设备的第一实施例的结构示意图。
显示设备100包括：光敏传感器110、第一图像传感器120、第二图像传感器130、接收模块140和处理模块150。
其中，接收模块140，分别与光敏传感器110和处理模块150连接，用于接收所述光敏传感器检测当前环境亮度得到的光敏亮度值。
处理模块150，分别与第一图像传感器120、第二图像传感器130和接收模块140连接，用于根据光敏传感器110检测到的当前环境的光敏亮度值、第一图像传感器120检测到的当前环境的第一亮度值、以及第二图像传感器130检测到的当前环境的第二亮度值，调节显示设备100的背光亮度。
显示设备100的第一图像传感器120和第二图像传感器130可以同时启动，与光敏传感器110同时对当前环境光的明亮程度进行检测，以节约检测时间，节省背光调节前的步骤，第一时间为用户提供准确的背光亮度。
另外，显示设备100的第一图像传感器120和第二图像传感器130也可以依次启动，分别与光敏传感器110对当前环境光线进行检测。以节省系统资源，降低设备能耗。例如，在本实施例中，第一图像传感器120和第二图像传感器130为依次启动。
在本实施例中，若第一图像传感器120和第二图像传感器130之一无法正常启动，则使用可启动正常的图像传感器与光敏传感器110检测当前环境光的明亮程度；若第一图像传感器120和第二图像传感器130均无法正常启 动，则不调节背光亮度，并在显示设备屏幕上弹出提示窗口，提醒用户检查当前显示设备状态是否正常。
摄像头传感器图像信号处理器可以提供一个关于当前环境亮度的参数值(即第一亮度值或第二亮度值)：摄像亮度。摄像亮度值在摄像头模块主要用于计算快门时间。这里我们可以将摄像亮度值作为图像传感器检测的当前环境亮度值。
摄像亮度值在弱光环境下敏感且稳定，可以精确的捕捉当前环境光线的细微改变，反馈迅速、可靠性高，通过当前摄像亮度值可以辅助光敏传感器对当前环境光的明亮程度做出正确的判断。
在本实施例中，第一图像传感器120优选为显示设备100上的前置图像传感器，第二图像传感器130为显示设备100上的后置图像传感器。以手机为例，所述第一图像传感器可以为手机的前置摄像头的图像传感器，所述第二图像传感器可以为手机的后置摄像头的图像传感器。一般情况下，前置的图像传感器与用户的眼睛处于同一亮度环境中，因此，通过前置的图像传感器采集的当前环境亮度值，更能准确获取用户眼睛所感知的环境光亮度，根据前置图像传感器获取的环境亮度值来调整背光亮度可以带来更佳的用户体验。同时，后置的图像传感器辅助前置图像传感器对当前环境亮度进行辅助检测，使显示设备对环境亮度具有整体判断，防止因环境光照不均匀导致的误判情况，提高亮度检测可靠性。
由于光敏传感器受开孔结构、玻璃透光率、光波频谱差异等因素影响，无法在弱光环境下真实反映人眼感知光亮，而图像传感器的获取的当前环境亮度值在弱光环境下敏感且稳定，可以精确的捕捉当前环境光线的细微改变。因此，本公开文本实施例根据光敏亮度值，以及显示设备的第一图像传感器、第二图像传感器检测的当前环境亮度值，调节显示设备的背光亮度。这样，结合光敏亮度值和第一图像传感器、第二图像传感器检测的当前环境亮度值，更能反应当前环境的真实亮度值，相应调节地背光亮度更适于人眼观看，提高了用户体验。同时，当所述第一图像传感器120和第二图像传感器130之一无法正常启动时，可使用可正常工作的图像传感器与光敏传感器110检测当前环境光的明亮程度，充分利用显示设备100的硬件资源，进一步提高了 环境亮度检测的可靠性。
作为本公开文本的显示设备的第二实施例，与上述显示设备的第一实施例不同的是，所述处理模块150具体用于根据所述接收模块140接收的所述光敏亮度值，以及当前环境亮度值，调节所述显示设备100的背光亮度，所述当前环境亮度值为所述第一亮度值和所述第二亮度值中的最大值。
当前环境亮度值可以是第一亮度值和第二亮度值各同时取值一次，并相比较得到的较大值；也可以是第一亮度值和第二亮度值各同时取值多次，并将所有值相比较得到的最大值；还可以是将第一亮度值所取的若干值取平均数，将第二亮度值所取的若干值取平均数，将上述两个平均数相比较得到的较大值。
在本实施例中，所述第一亮度值和第二亮度值各同时取值8次，取值时间间隔为50ms，取第一亮度值中8个数值中较大的4个并计算平均数，定义为第一亮度平均数，取第二亮度值中8个数值中较大的4个并计算平均数，定义为第二亮度平均数，当前环境亮度值为将第一亮度平均数与第二亮度平均数相比较得到的较大值。
以第一亮度值和第二亮度值的最大值作为当前环境亮度值，并根据光敏亮度值和当前环境亮度值调节背光亮度，使该背光亮度能保证在当前最大环境亮度的情况下供用户正常使用，提升用户使用体验。同时，通过以第一亮度平均值和第二亮度平均值的较大值作为环境亮度值的方案，能有效避免因瞬间闪光等因素对环境光明亮程度的检测造成干扰，提高当前环境亮度值的获取可靠性。
请参照图7，是本公开文本的显示设备的第三实施例的结构示意图。
与上述显示设备的第一实施例不同的是，所述处理模块150包括：
光敏亮度变化值获取单元151，用于确定所述光敏传感器110检测的光敏亮度值位于预设的光敏亮度范围之内，通过所述光敏传感器110检测当前环境亮度的变化，得到光敏亮度变化值。
预设的光敏亮度范围具体为弱光环境所对应的亮度范围，其具体范围值可为[1，20)lux。所谓光敏亮度变化值即为光敏传感器当前获取的光敏亮度值和上一周期(该周期可以根据情况预定义)获取的光敏亮度值的差值。在通过 光敏传感器周期性检测的光敏亮度值仅一次或连续多次落入预设的光敏亮度范围后，即可确定光敏亮度值位于预设的光敏亮度范围之内。本步骤中，优选光敏传感器周期性检测的光敏亮度值连续多次(如8次)落入预设的光敏亮度范围后，则确定光敏亮度值位于预设的光敏亮度范围，从而避免由于光敏抖动带来图像传感器的频繁开启和关闭。
第一调节单元152，用于若所述光敏亮度变化值获取单元151获取的所述光敏亮度变化值大于第一阈值，则通过所述第一图像传感器120和所述第二图像传感器130检测当前环境亮度，得到所述当前环境亮度值，并根据所述当前环境亮度值调节背光亮度；若所述光敏亮度变化值小于所述第一阈值，保持当前背光亮度不变。
在本步骤中，若光敏亮度变化值大于10lux，则确定显示设备当前所处的环境亮度发生了改变，通过摄像头传感器图像信号处理器获取作为第一亮度值、第二亮度值的摄像亮度值，并基于当前环境亮度值对背光亮度进行调节，以使当前背光亮度更适合当前用户的使用环境。
在本实施例中，在通过第一图像传感器120和第二图像传感器130成功获取当前环境亮度值后，可以仅根据当前环境亮度值调节背光亮度，也可以根据第一亮度值、第二亮度值和当前光敏亮度值调节背光亮度。
在本实施例中，在不需要自动背光的情况下可以立即停止正在进行的摄像头辅助判断(所谓开启摄像头辅助判断即开启摄像头传感器图像信号处理器并获取作为环境亮度值的摄像亮度值)。其中不需要自动背光的情况包含以下几种：手机正在运行中自动关闭自动背光；屏幕状态进入暗屏，或者灭屏(手动灭屏或者超时灭屏)；接近传感器状态切换为靠近；手机续航状态切换为超级省电模式，同时，超级省电模式下一律不启动摄像头辅助判断；进入通话状态，呼叫、呼入、接听状态下均不启动摄像头辅助判断；正在进行辅助判断时发生上面的状态，需要立即停止辅助判断时。上述任一情况均不开启摄像头辅助判断。
由于长时间开启第一图像传感器、第二图像传感器会很快消耗掉显示设备特别是手机的电能，因此，本公开文本实施例由光敏传感器周期性获取光敏亮度值，在光敏亮度值位于预设的光敏亮度范围，且光敏亮度变化值大于 第一阈值时，才开启第一图像传感器、第二图像传感器获取当前环境亮度值，并在第一图像传感器、第二图像传感器获取当前环境亮度值成功后，将其关闭，以达到省电和避免频繁开启第一图像传感器、第二图像传感器的目的。
作为本公开文本的显示设备的第四实施例，与上述显示设备100的第三实施例不同的是，所述处理模块150进一步用于若所述接收模块140接收的所述光敏亮度值由预设的光敏亮度范围之外进入预设的光敏亮度范围之内，开启所述第一图像传感器120和所述第二图像传感器130检测当前环境亮度，得到所述当前环境亮度值，并根据所述当前环境亮度值调节背光亮度。
其中，预设的光敏亮度范围具体为弱光环境所对应的亮度范围，其具体范围值可为[1，17)lux。本步骤中，“开启第一图像传感器和第二图像传感器检测当前环境亮度，得到当前环境亮度值，并根据当前环境亮度值调节背光亮度”与在上文中详细介绍的步骤S34相同，故在此不赘述。
在确定光敏亮度值位于预设的光敏亮度范围之内(即弱光环境下)后，将预设的光敏亮度范围重新定义至[1，20)lux，可有效防止因环境亮度接近17lux而导致显示设备在不同的光线环境下反复切换，给系统造成负担。
进一步地，在确认显示设备当前位于弱光环境下时，开启相应的摄像头传感器图像信号处理器并获取作为环境亮度值的摄像亮度值，通过所述光敏传感器检测当前环境亮度的变化，得到光敏亮度变化值。若光敏亮度变化值大于第一阈值，通过第一图像传感器和第二图像传感器检测当前环境亮度，得到当前环境亮度值，根据当前环境亮度值调节背光亮度；若光敏亮度变化值小于第一阈值，保持当前背光亮度不变。
进一步地，若光敏传感器检测到光敏亮度值仍有一次未落在[1，20)lux范围内，则判断当前环境退出了弱光环境，并恢复所述预设的光敏亮度范围值[1，17)lux。
通过对光敏亮度值的实时检测，在确认光敏亮度值进入预设的光敏亮度范围之内的第一时间，启动摄像头辅助判断并对背光亮度进行调节，给用户以快速准确的使用体验。
请参照图8，是本公开文本的显示设备的第五实施例的结构示意图。
与上述显示设备100的第一实施例不同的是，所述处理模块150包括：
第二调节单元153，用于确定所述接收模块140接收的所述光敏亮度值大于所述预设的光敏亮度范围的上限值，则基于所述光敏亮度值，调节所述显示设备100的背光亮度；以及
第三调节单元154，用于确定所述接收模块140接收的所述光敏亮度值小于所述预设的光敏亮度范围的下限值，则通过所述第一图像传感器120和所述第二图像感器130检测当前环境亮度，得到所述当前环境亮度值，若所述当前环境亮度值小于第二阈值，则将预设的最小背光亮度作为当前背光亮度。
在本实施例中，当所述光敏亮度值大于所述预设的光敏亮度范围的上限时，为了简化判断流程，节省系统资源，关闭摄像亮度辅助判断，通过光敏传感器对背光亮度进行控制。
当所述光敏亮度值不大于所述预设的光敏亮度范围的上限时，进一步判断所述光敏亮度值是否小于所述预设的光敏亮度范围的下限值，在本实施例中，取所述下限值趋于0lux，当光敏传感器检测到当前光敏亮度值为0lux时，通过第一图像传感器120和第二图像传感器130检测当前环境亮度值，判断当前环境亮度值是否小于第二阀值，在本实施例中，所述第二阀值为使用环境为全黑环境对应的亮度值，若是，则判断当前显示设备100的使用环境为全黑环境，使用最小背光亮度作为当前背光亮度。同理，为了进一步避免光敏抖动，在判断当前显示设备的使用环境为全黑环境后，将所述光敏亮度范围的下限值重定义为2lux。
通过实时对光敏亮度值进行检测，当所述光敏亮度值位于所述预设的光敏亮度范围之外时，提供相应的解决方案，能有效节约显示设备能源，节省系统资源。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，是可以通过计算机程序来指令相关的硬件来完成，所述的程序可存储于一计算机可读取存储介质中，该程序在执行时，可包括如上述各方法的实施例的流程。其中，所述的存储介质可为磁碟、光盘、只读存储记忆体(Read-Only Memory，ROM)或随机存储记忆体(RandomAccess Memory，RAM)等。
当本公开文本实施例提及“第一”、“第二”等序数词时，除非根据上下文 其确实表达顺序之意，应当理解为仅仅是起区分之用。
以上所述仅为本公开文本的较佳实施例而已，并不用以限制本公开文本，凡在本公开文本的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本公开文本的保护范围之内。

Claims (14)

  1. 一种显示设备的背光调节方法，包括如下步骤：
    通过所述显示设备的光敏传感器检测当前环境亮度，得到光敏亮度值；以及
    根据所述光敏亮度值、所述显示设备的第一图像传感器检测的当前环境的第一亮度值、以及所述显示设备的第二图像传感器检测的当前环境的第二亮度值，调节所述显示设备的背光亮度。
  2. 如权利要求1所述的背光调节方法，其中，所述根据所述光敏亮度值、所述显示设备的第一图像传感器检测的当前环境的第一亮度值、以及所述显示设备的第二图像传感器检测的当前环境的第二亮度值，调节所述显示设备的背光亮度，包括：
    根据所述光敏亮度值，以及当前环境亮度值，调节所述显示设备的背光亮度，其中，所述当前环境亮度值为所述第一亮度值和所述第二亮度值中的最大值。
  3. 如权利要求2所述的背光调节方法，其中，所述根据所述光敏亮度值，以及当前环境亮度值，调节所述显示设备的背光亮度，包括：
    确定所述光敏亮度值位于预设的光敏亮度范围之内，通过所述光敏传感器检测当前环境亮度的变化，得到光敏亮度变化值；
    若所述光敏亮度变化值大于第一阈值，通过所述第一图像传感器和所述第二图像传感器检测当前环境亮度，得到所述当前环境亮度值，并根据所述当前环境亮度值调节背光亮度；以及
    若所述光敏亮度变化值小于所述第一阈值，保持当前背光亮度不变。
  4. 如权利要求2所述的背光调节方法，其中，所述根据所述光敏亮度值，以及所述当前环境亮度值，调节所述显示设备的背光亮度，包括：
    若所述光敏亮度值由预设的光敏亮度范围之外进入预设的光敏亮度范围之内，开启所述第一图像传感器和所述第二图像传感器检测当前环境亮度，得到所述当前环境亮度值，并根据所述当前环境亮度值调节背光亮度。
  5. 如权利要求2的所述的背光调节方法，其中，所述根据所述光敏亮度 值，以及所述当前环境亮度值，调节所述显示设备的背光亮度，包括：
    若确定所述光敏亮度值大于所述预设的光敏亮度范围的上限值，则基于所述光敏亮度值，调节所述显示设备的背光亮度；以及
    若确定所述光敏亮度值小于所述预设的光敏亮度范围的下限值，则通过所述第一图像传感器和所述第二图像感器检测当前环境亮度，得到所述当前环境亮度值，若所述当前环境亮度值小于第二阈值，则将预设的最小背光亮度作为当前背光亮度。
  6. 如权利要求1-5任一项所述的背光调节方法，其中，所述第一图像传感器为所述显示设备上的前置图像传感器，所述第二图像传感器为所述显示设备上的后置图像传感器。
  7. 一种显示设备，所述显示设备包括光敏传感器、第一图像传感器和第二图像传感器，所述显示设备还包括：
    接收模块，用于接收所述光敏传感器检测当前环境亮度得到的光敏亮度值；以及
    处理模块，用于根据所述接收模块接收的所述光敏亮度值、所述第一图像传感器检测的当前环境的第一亮度值、以及所述第二图像传感器检测的当前环境的第二亮度值，调节所述显示设备的背光亮度。
  8. 如权利要求7所述的显示设备，其中，所述处理模块根据所述接收模块接收的所述光敏亮度值，以及当前环境亮度值，调节所述显示设备的背光亮度，其中，所述当前环境亮度值为所述第一亮度值和所述第二亮度值中的最大值。
  9. 如权利要求8所述的显示设备，其中，所述处理模块包括：
    光敏亮度变化值获取单元，用于确定所述接收模块接收的所述光敏亮度值位于预设的光敏亮度范围之内，通过所述光敏传感器检测当前环境亮度的变化，得到光敏亮度变化值；以及
    第一调节单元，用于若所述光敏亮度变化值获取单元获取的所述光敏亮度变化值大于第一阈值，则通过所述第一图像传感器和所述第二图像传感器检测当前环境亮度，得到所述当前环境亮度值，并根据所述当前环境亮度值调节背光亮度；若所述光敏亮度变化值小于所述第一阈值，保持当前背光亮 度不变。
  10. 如权利要求8所述的显示设备，其中，所述处理模块进一步用于若所述接收模块接收的所述光敏亮度值由预设的光敏亮度范围之外进入预设的光敏亮度范围之内，开启所述第一图像传感器和所述第二图像传感器检测当前环境亮度，得到所述当前环境亮度值，并根据所述当前环境亮度值调节背光亮度。
  11. 如权利要求8的所述的显示设备，其中，所述处理模块包括：
    第二调节单元，用于确定所述接收模块接收的所述光敏亮度值大于所述预设的光敏亮度范围的上限值，则基于所述光敏亮度值，调节所述显示设备的背光亮度；以及
    第三调节单元，用于确定所述接收模块接收的所述光敏亮度值小于所述预设的光敏亮度范围的下限值，则通过所述第一图像传感器和所述第二图像感器检测当前环境亮度，得到所述当前环境亮度值，若所述当前环境亮度值小于第二阈值，则将预设的最小背光亮度作为当前背光亮度。
  12. 如权利要求7-11任一项所述的显示设备，其中，所述第一图像传感器为所述显示设备上的前置图像传感器，所述第二图像传感器为所述显示设备上的后置图像传感器。
  13. 一种计算机程序产品，当所述计算机程序产品被执行时使得计算机实现如权利要求1-6中任一项所述的显示设备的背光调节方法。
  14. 一种计算机可读记录介质，在其中记录有如权利要求13所述的计算机程序产品。
PCT/CN2015/084822 2014-07-31 2015-07-22 一种显示设备的背光调节方法、显示设备、计算机程序产品及计算机可读存储介质 Ceased WO2016015587A1 (zh)

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CN115875804A (zh) * 2022-12-09 2023-03-31 珠海格力电器股份有限公司 电器的控制方法、装置、空调器与电器
CN115953980A (zh) * 2023-01-03 2023-04-11 上海视脉电子科技有限公司 一种室外led屏自适应亮度控制方法及其系统
CN116592471A (zh) * 2023-06-15 2023-08-15 珠海格力电器股份有限公司 一种空调的控制方法、装置、空调和存储介质

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