CN102968962A - Backlight adjustment method and device - Google Patents
Backlight adjustment method and device Download PDFInfo
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- CN102968962A CN102968962A CN2012104765605A CN201210476560A CN102968962A CN 102968962 A CN102968962 A CN 102968962A CN 2012104765605 A CN2012104765605 A CN 2012104765605A CN 201210476560 A CN201210476560 A CN 201210476560A CN 102968962 A CN102968962 A CN 102968962A
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Abstract
The invention is applicable to the field of mobile terminals and provides a backlight adjustment method and device. The backlight adjustment method comprises the following steps of: monitoring the change of illumination intensity by an optical sensor working with a first gain; setting the optical sensor to work with a second gain when the change of the illumination intensity meets preset conditions; detecting current illumination intensity by the optical sensor working with the second gain; and adjusting backlight brightness according to the second gain and the current light intensity. According to the invention, when the detected change of the light intensity meets the preset conditions, the gain size of the optical sensor is adjusted, and the backlight brightness of a screen is adjusted according to the light intensity detected by the optical sensor working with the current gain, so that the automatic adjustment range of the backlight brightness of a mobile terminal is effectively expanded, and the phenomenon that the mobile terminal cannot automatically adjust the backlight brightness under the condition of excessive illumination intensity is avoided.
Description
Technical field
The invention belongs to field of mobile terminals, relate in particular to a kind of backlight adjusting method and device.
Background technology
Develop rapidly along with the portable terminal intellectualized technology, liquid crystal display (Liquid Crystal Display, LDC) screen relies on it to take up room little, low-power consumption, low radiation, the advantages such as flicker free and effective reduction visual fatigue replace traditional light emitting diode (Light Emitting Diode gradually, LED) screen becomes the main flow in market.
Under the stronger environment of light, lcd screen produces mirror-reflection easily, need to increase the backlight illumination ability of screen so that the user sees the content on the screen clearly, but under the weak environment of light, excessive backlight illumination causes again the increase of terminal energy consumption, so existing lcd screen often adopts optical sensor to obtain current intensity of illumination, with the size of dynamic adjustments backlight illumination.Yet, in the actual use procedure of portable terminal, in case intensity of illumination has exceeded the scope that optical sensor can be responded to, optical sensor can't detect, portable terminal just can't effectively be adjusted backlight illumination, thereby cause the user under high light, can't check cls curtain content, reduced the operating efficiency of portable terminal.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of backlight brightness regulation method, is intended to solve portable terminal in the prior art can't be adjusted backlight illumination automatically in the excessive situation of intensity of illumination problem.
The embodiment of the invention is achieved in that a kind of backlight brightness regulation method, comprising:
Change by the optical sensor monitoring intensity of illumination that is operated in the first gain;
Satisfy when pre-conditioned when intensity of illumination changes, described optical sensor to be set to be operated in the second gain;
By being operated in the current intensity of illumination of described light sensors of described the second gain;
Adjust backlight illumination according to described the second gain and described current intensity of illumination.
Another purpose of the embodiment of the invention is to provide a kind of backlight illumination adjusting gear, comprising:
The intensity of illumination monitoring means is used for changing by the optical sensor monitoring intensity of illumination that is operated in the first gain;
The gain setting unit is used for satisfying when pre-conditioned when intensity of illumination changes, and described optical sensor is set is operated in second and gains;
The intensity of illumination detecting unit is used for by being operated in the current intensity of illumination of described light sensors of the second gain;
The backlight illumination adjustment unit is used for adjusting backlight illumination according to described the second gain and described current intensity of illumination.
In embodiments of the present invention, when the variation that detects intensity of illumination is satisfied when pre-conditioned, gain size to optical sensor is adjusted, and adjust the backlight illumination of screen according to the intensity of illumination that the light sensors that is operated in current gain goes out, effectively enlarged the automatic setting range of backlight brightness, the situation of having avoided portable terminal can't automatically adjust backlight illumination in the excessive situation of intensity of illumination occurs.
Description of drawings
Fig. 1 is the realization flow figure of the backlight brightness regulation method that provides of the embodiment of the invention;
Fig. 2 is the specific implementation process flow diagram of the backlight brightness regulation method step S104 that provides of the embodiment of the invention;
Fig. 3 is the structured flowchart of the backlight illumination adjusting gear that provides of the embodiment of the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
In embodiments of the present invention, when the variation that detects intensity of illumination is satisfied when pre-conditioned, gain size to optical sensor is adjusted, and adjust the backlight illumination of screen according to the intensity of illumination that the light sensors that is operated in current gain goes out, effectively enlarged the automatic setting range of backlight brightness, the situation of having avoided portable terminal can't automatically adjust backlight illumination in the excessive situation of intensity of illumination occurs.
Fig. 1 shows the realization flow of the backlight brightness regulation method that the embodiment of the invention provides, and details are as follows:
In step S101, change by the optical sensor monitoring intensity of illumination that is operated in the first gain.
In the present embodiment, when the screen of portable terminal was in illuminating state, optical sensor just detected in real time to intensity of illumination, and with the variation of monitoring intensity of illumination, at this moment, optical sensor is operated in the first gain.
In step S102, when changing, intensity of illumination satisfies when pre-conditioned, and optical sensor is set is operated in the second gain.
Optical sensor is as the photoinduction device, it possesses two or more gain, in the middle of the actual testing process of optical sensor, need to specify it to be operated in one of them gain, and after the gain of optical sensor is set, the maximal value of the intensity of illumination that it can be responded to also is defined, the respectively corresponding detectable intensity of illumination maximal value of each gain.
In the present embodiment, can be by pre-conditioned, judge intensity of illumination that the optical sensor that is operated in the first gain monitors change whether satisfy pre-conditioned, when intensity of illumination change satisfy pre-conditioned, then change the gain of optical sensor, it is operated in the second gain; If it is pre-conditioned that the intensity of illumination variation is not satisfied, then keep optical sensor and be operated in the first current gain, thereby come the self-adaptation adjustment is carried out in the gain of optical sensor according to the situation of change of intensity of illumination, to tackle different intensities of illumination.
In the present embodiment, the second gain is arranged in the first gain of optical sensor may be had two kinds of situations, the first is the first situation that gains and gain greater than second, and the gain that is about to optical sensor is adjusted into less value from larger value; The second is the first situation that gains and gain less than second, and the gain that is about to optical sensor is adjusted into larger value from less value.Possess two gains as example take optical sensor, when portable terminal is in the environment that indoor light such as grade is weak and the light variation is comparatively stable within a period of time, optical sensor can be set to be operated in that larger in two gains gain, thus, can tell comparatively trickle intensity of illumination by larger gain region and change, namely so that optical sensor be operated under the comparatively responsive state.But because the detectable intensity of illumination maximal value of larger gain correspondence is defined, therefore, when portable terminal is in outdoor, sun-drenched occasion, optical sensor then is set to be operated in that less in two gains gain, the detectable intensity of illumination maximal value of less gain correspondence is larger, thus, namely can realize detection to stronger intensity of illumination.
Above-mentioned two kinds of different situations will be elaborated in subsequent embodiment, not give unnecessary details at this.
As one embodiment of the present of invention, the variation that monitors intensity of illumination when the optical sensor that is operated in the first gain among the step S101 is not satisfied when pre-conditioned, then keeps optical sensor to be operated in the first gain, need not to change the running parameter of optical sensor.
In step S103, by being operated in the current intensity of illumination of light sensors of the second gain.
In the present embodiment, optical sensor is adjusted to after the second gain that more adapts to current intensity of illumination situation of change, namely by being operated in the optical sensor of the second gain, intensity of illumination is detected in real time.
In step S104, adjust backlight illumination according to the second gain and current intensity of illumination.
In the present embodiment, optical sensor according among the second gain of setting among the step S102 and the step S103 by be operated in the second light sensors that gains to current intensity of illumination come the backlight illumination of screen is adjusted.Particularly, as shown in Figure 2:
In step S201, obtain when optical sensor be operated in second when gain illumination intensity and the default corresponding relation of backlight illumination.
In the present embodiment, when optical sensor is operated in different gains, the intensity of illumination that each gain detects can be distinguished corresponding other backlight illumination of level, the default corresponding relation of this intensity of illumination and backlight illumination is pre-stored in the backlight illumination Adjustment System of portable terminal, by reading relevant memory storage, namely can get access to above-mentioned corresponding relation.Particularly, the default corresponding relation of intensity of illumination and backlight illumination can adopt the corresponding form of interval-numerical value, namely is in corresponding other backlight illumination of level of intensity of illumination in a certain interval range.
In step S202, according to default corresponding relation and current intensity of illumination, backlight illumination corresponding to current intensity of illumination is set.
In the present embodiment, the default corresponding relation of illumination intensity and backlight illumination when being operated in the second gain by the optical sensor that gets access among the step S201, namely can determine the backlight illumination that needs arrange according to current intensity of illumination, thereby finish the self-adaptation adjustment to backlight illumination.
In embodiments of the present invention, when the variation that detects intensity of illumination is satisfied when pre-conditioned, gain size to optical sensor is adjusted, and adjust the backlight illumination of screen according to the intensity of illumination that the light sensors that is operated in current gain goes out, effectively enlarged the automatic setting range of backlight brightness, the situation of having avoided portable terminal can't automatically adjust backlight illumination in the excessive situation of intensity of illumination occurs.
Below two kinds of concrete gain adjustment situations mentioning among the step S102 are elaborated:
Situation one:
The first gain is greater than the second gain.
At this moment, step S102 is specially:
When intensity of illumination increases to the first predetermined threshold value, optical sensor is set is operated in described the second gain.
In the present embodiment, when the optical sensor that is operated in the first gain monitors intensity of illumination and increases to the first predetermined threshold value, the expression current mobile terminal has been transferred to stronger light environment from weak light environment, at this moment, optical sensor then is set is operated in the second gain, to avoid because intensity of illumination continues to increase, cause being operated in the situation appearance that the first optical sensor that gains can't detect correct intensity of illumination.
In the present embodiment, the first predetermined threshold value sets in advance, particularly, the first predetermined threshold value can be set to approach or equal to be operated in a value of the maximum intensity of illumination that the optical sensor of the first gain can detect, preferably, the first predetermined threshold value is for being operated in the optical sensor maximum intensity of illumination that can detect of the first gain, and the value so that the optical sensor of avoiding intensity of illumination moment to be strengthened to being operated in the first gain can't detect causes the situation of optical sensor operational failure to occur.
In the present embodiment, the first predetermined threshold value can be system default, also can be User Defined.As a realization example of the present invention, this first predetermined threshold value can be 65000Lux
Situation two:
The first gain is less than the second gain.
At this moment, step S102 is specially:
When intensity of illumination is reduced to the second predetermined threshold value, optical sensor is set is operated in described the second gain.
In the present embodiment, when the optical sensor that is operated in the first gain monitors intensity of illumination and is reduced to the second predetermined threshold value, the expression current mobile terminal has been transferred to weak light environment from stronger light environment, at this moment, optical sensor then is set is operated in the second gain, to avoid because intensity of illumination continues to reduce, cause being operated in the optical sensor of the first gain because of the too small situation appearance that can't detect sensitively than the trickle intensity of illumination variation under the decreased light environment that gains.
In the present embodiment, the second predetermined threshold value can be system default, also can be User Defined.As a realization example of the present invention, this second predetermined threshold value can be 40000Lux.
In embodiments of the present invention, when the variation that detects intensity of illumination is satisfied when pre-conditioned, gain size to optical sensor is adjusted, and adjust the backlight illumination of screen according to the intensity of illumination that the light sensors that is operated in current gain goes out, effectively enlarged the automatic setting range of backlight brightness, the situation of having avoided portable terminal can't automatically adjust backlight illumination in the excessive situation of intensity of illumination occurs.
Fig. 3 shows the structured flowchart of the backlight illumination adjusting gear that the embodiment of the invention provides, and this device can run in the mobile terminal device that possesses lcd screen, includes but not limited to the mobile terminal devices such as mobile phone, panel computer.For convenience of explanation, only show the part relevant with present embodiment.
With reference to Fig. 3, this device comprises:
Intensity of illumination monitoring means 31 changes by the optical sensor monitoring intensity of illumination that is operated in the first gain.
Gain setting unit 32 satisfies when pre-conditioned when intensity of illumination changes, and optical sensor is set is operated in the second gain.
Intensity of illumination detecting unit 33 is by being operated in the current intensity of illumination of light sensors of the second gain.
Backlight illumination adjustment unit 34 is adjusted backlight illumination according to the second gain and current intensity of illumination.
Alternatively, the first gain is greater than the second gain, and gain setting unit 32 is concrete for when intensity of illumination increases to the first predetermined threshold value, optical sensor is set is operated in the second gain.
Alternatively, the first gain is less than the second gain, and gain setting unit 32 is concrete for when intensity of illumination is reduced to the second predetermined threshold value, optical sensor is set is operated in the second gain.
Alternatively, gain setting unit 32 also is used for not satisfying when pre-conditioned when intensity of illumination changes, and keeps optical sensor to be operated in first and gains.
Alternatively, backlight illumination adjustment unit 34 comprises:
Obtain subelement, obtain optical sensor be operated in second when gain illumination intensity and the default corresponding relation of backlight illumination.
Subelement is set, according to default corresponding relation and current intensity of illumination, backlight illumination corresponding to current intensity of illumination is set.
In embodiments of the present invention, when the variation that detects intensity of illumination is satisfied when pre-conditioned, gain size to optical sensor is adjusted, and adjust the backlight illumination of screen according to the intensity of illumination that the light sensors that is operated in current gain goes out, effectively enlarged the automatic setting range of backlight brightness, the situation of having avoided portable terminal can't automatically adjust backlight illumination in the excessive situation of intensity of illumination occurs.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a backlight brightness regulation method is characterized in that, comprising:
Change by the optical sensor monitoring intensity of illumination that is operated in the first gain;
Satisfy when pre-conditioned when intensity of illumination changes, described optical sensor to be set to be operated in the second gain;
By being operated in the current intensity of illumination of described light sensors of described the second gain;
Adjust backlight illumination according to described the second gain and described current intensity of illumination.
2. the method for claim 1 is characterized in that, described the first gain is greater than described the second gain, describedly satisfies when pre-conditioned when intensity of illumination changes, and described optical sensor is set is operated in second and gains and comprise:
When intensity of illumination increases to the first predetermined threshold value, described optical sensor is set is operated in described the second gain.
3. the method for claim 1 is characterized in that, described the first gain is less than described the second gain, describedly satisfies when pre-conditioned when intensity of illumination changes, and described optical sensor is set is operated in second and gains and comprise:
When intensity of illumination is reduced to the second predetermined threshold value, described optical sensor is set is operated in described the second gain.
4. such as each described method of claim 1 ~ 3, it is characterized in that, also comprise:
Do not satisfy when pre-conditioned when intensity of illumination changes, to keep described optical sensor to be operated in described the first gain.
5. such as each described method of claim 1 ~ 3, it is characterized in that, describedly comprise according to described the second gain and described current intensity of illumination adjustment backlight illumination:
Obtain when described optical sensor be operated in described second when gain illumination intensity and the default corresponding relation of backlight illumination;
According to described default corresponding relation and described current intensity of illumination, backlight illumination corresponding to described current intensity of illumination is set.
6. a backlight illumination adjusting gear is characterized in that, comprising:
The intensity of illumination monitoring means is used for changing by the optical sensor monitoring intensity of illumination that is operated in the first gain;
The gain setting unit is used for satisfying when pre-conditioned when intensity of illumination changes, and described optical sensor is set is operated in second and gains;
The intensity of illumination detecting unit is used for by being operated in the current intensity of illumination of described light sensors of the second gain;
The backlight illumination adjustment unit is used for adjusting backlight illumination according to described the second gain and described current intensity of illumination.
7. device as claimed in claim 6 is characterized in that, described the first gain is greater than described the second gain, and described gain setting unit specifically is used for when intensity of illumination increases to the first predetermined threshold value, described optical sensor is set is operated in described the second gain.
8. device as claimed in claim 6 is characterized in that, described the first gain is less than described the second gain, and described gain setting unit specifically is used for when intensity of illumination is reduced to the second predetermined threshold value, described optical sensor is set is operated in described the second gain.
9. such as each described device of claim 6 ~ 8, it is characterized in that described gain setting unit also is used for not satisfying when pre-conditioned when intensity of illumination changes, and keeps described optical sensor to be operated in described first and gains.
10. such as each described device of claim 6 ~ 8, it is characterized in that described backlight illumination adjustment unit comprises:
Obtain subelement, the default corresponding relation of illumination intensity and backlight illumination when being used for obtaining described optical sensor and being operated in described the second gain;
Subelement is set, is used for according to described default corresponding relation and described current intensity of illumination, backlight illumination corresponding to described current intensity of illumination is set.
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| CN2012104765605A CN102968962A (en) | 2012-11-21 | 2012-11-21 | Backlight adjustment method and device |
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| CN2012104765605A CN102968962A (en) | 2012-11-21 | 2012-11-21 | Backlight adjustment method and device |
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| CN107979663A (en) * | 2017-11-22 | 2018-05-01 | 广东欧珀移动通信有限公司 | Sensor component, display screen component and electronic equipment |
| CN109272917A (en) * | 2018-10-25 | 2019-01-25 | Oppo广东移动通信有限公司 | Screen luminance adjustment method, device, storage medium and electronic equipment |
| CN116052567A (en) * | 2022-05-30 | 2023-05-02 | 荣耀终端有限公司 | Method for adjusting ambient light gain, electronic device and readable storage medium |
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