CN103458110A - Method and mobile terminal for adjusting display screen backlight in combination with acceleration sensor - Google Patents
Method and mobile terminal for adjusting display screen backlight in combination with acceleration sensor Download PDFInfo
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- CN103458110A CN103458110A CN201310359765XA CN201310359765A CN103458110A CN 103458110 A CN103458110 A CN 103458110A CN 201310359765X A CN201310359765X A CN 201310359765XA CN 201310359765 A CN201310359765 A CN 201310359765A CN 103458110 A CN103458110 A CN 103458110A
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Abstract
The invention discloses a method and mobile terminal for adjusting display screen backlight in combination with an acceleration sensor. The method includes the following steps that S1, when a screen lighting request is received, current ambient light intensity is collected through a photo sensor and uploaded to an application layer to adjust corresponding backlight brightness of a display screen; S2, the acceleration sensor detects the inclination angle A of a current mobile terminal; S3, when the photo sensor collects changes of the ambient light intensity, first, the inclination angle B of the current mobile terminal is detected through the acceleration sensor, and whether the difference value between the inclination angle A and the inclination angle B is larger than a set angle threshold value or not is judged; if yes, original backlight brightness of the display screen is maintained, and if not, new ambient light intensity is uploaded to the application layer through the photo sensor to adjust the backlight brightness of the display screen again. The method and mobile terminal solve the problems that the brightness of the display screen is misadjusted due to the difference of the inclination angles of the mobile terminal, and therefore flicker of the display screen is caused, and more reliable function experience is provided for a user.
Description
Technical field
The present invention relates to the mobile communication technology field; Be specifically related to a kind of method and mobile terminal of accurately regulating display backlight in conjunction with acceleration transducer.
Background technology
In prior art, mobile terminal, by the application optical sensor, is realized the backlight illumination of intelligence adjusting display screen.Described optical sensor can perception ambient light situation, and informs the automatic adjusting backlight luminance of process chip, thereby reduces the power consumption of product, extends to greatest extent the operating time of battery.When ambient light intensity is weak, backlight illumination is lower, and when ambient light intensity is stronger, backlight illumination is higher.Gather current ambient light intensity by optical sensor, and carry out the backlight illumination of intelligent adjusting display screen according to ambient light intensity, can reach and make the user read the purpose of soft, not dazzling and power saving.
The operation principle of described optical sensor is: mobile terminal is provided with light well, and optical sensor gathers the current environment luminous intensity by light well.But; because the variation meeting at mobile terminal angle of inclination directly affects the irradiating angle of light source to mobile terminal; thereby affect the luminous intensity of light well; therefore in daily life; often have such situation; under some fixing environment light conditions; if we have changed the angle of inclination of mobile terminal; affected the luminous intensity of advancing of light well; cause the environmental light intensity of optical sensor collection to change and the backlight illumination of mistuning display screen; thereby cause display screen scintillation to occur, the serious user that affects experiences.
Summary of the invention
The object of the invention is to solve above-mentioned defect of the prior art, a kind of method and mobile terminal of regulating display backlight in conjunction with acceleration transducer is provided, effectively solve the difference mistuning brightness of display screen because of the mobile terminal angle of inclination, thereby cause the problem of display screen flicker.For the user provides more reliable functional experience.
Purpose of the present invention can reach by taking following technical scheme:
A kind of method of regulating display backlight in conjunction with acceleration transducer is provided, and the method comprises the following steps:
S1, when mobile terminal receives the bright screen request, open optical sensor, optical sensor gathers current ambient light intensity by light well, and the ambient light intensity collected is uploaded to application layer, after application layer receives ambient light intensity, regulate the backlight illumination of display screen;
S2, open acceleration transducer, and detect the angle of inclination A of current mobile terminal by acceleration transducer;
S3, when described optical sensor collects ambient light intensity and changes, first do not upload new ambient light intensity, at first, by acceleration transducer, detect the now angle of inclination B of mobile terminal, and judge whether the difference between angle of inclination A and angle of inclination B is greater than the angle threshold of setting; Be judged as YES, perform step S4, be judged as NO, perform step S5;
S4, explanation mobile terminal still, in the environment of former ambient light intensity, are cancelled and are uploaded new ambient light intensity, maintain the original backlight illumination of display screen;
Variation has occurred in S5, explanation ambient light intensity, and optical sensor uploads to application layer by new ambient light intensity, after application layer receives new ambient light intensity, readjusts the backlight illumination of display screen.
As a kind of preferred scheme, preset the corresponding relation of ambient light intensity and backlight illumination in mobile terminal, and the corresponding relation of described ambient light intensity and backlight illumination is built in mobile terminal before dispatching from the factory.
Furthermore, the detailed process at described acceleration transducer detection current mobile terminal angle of inclination is as follows:
Acceleration transducer detects acceleration of gravity in X-axis, three axle component size of Y-axis and Z axis, and according to acceleration of gravity in X-axis, the component size on Y-axis and Z axis is calculated the angle of inclination of mobile terminal.
As a kind of preferred scheme, described angle threshold values is 15 degree.
A kind of above-mentioned mobile terminal of regulating the method for display backlight in conjunction with acceleration transducer that adopts is provided, and this mobile terminal comprises:
Whether the display screen detection module, receive the bright screen request for detection of the display screen of mobile terminal;
Optical sensor, when described display screen detection module detects the bright screen request, start automatically, by the light well arranged on mobile terminal, gathers current ambient light intensity; And the ambient light intensity collected is uploaded to application layer;
Acceleration transducer, when described display screen detection module detects the bright screen request, automatically start, angle of inclination A for detection of current mobile terminal, when described light sensors changes to ambient light intensity, at first by acceleration transducer, detect the now angle of inclination B of mobile terminal;
The threshold value comparison module, detect for judging described acceleration transducer the angle threshold whether the angle of inclination A that obtains and the difference between the B of angle of inclination are greater than setting;
Executive Module, process respectively according to the judged result of threshold value comparison module, if the difference between angle of inclination A and angle of inclination B is greater than the angle threshold of setting, makes so optical sensor cancel upper new ambient light intensity; If the difference between angle of inclination A and angle of inclination B is less than the angle threshold of setting, make so optical sensor upload new ambient light intensity;
Memory module, for the corresponding relation of predefined ambient light intensity and backlight illumination in memory mobile terminal;
The backlight illumination adjustment module, for the ambient light intensity of uploading according to described optical sensor, and regulate the backlight illumination of display screen according to the corresponding relation of ambient light intensity default in described memory module and backlight illumination.
As a kind of preferred scheme, described acceleration transducer is 3-axis acceleration sensor, and the detailed process that this 3-axis acceleration sensor detects the current mobile terminal angle of inclination is as follows:
Acceleration transducer detects acceleration of gravity in X-axis, three axle component size of Y-axis and Z axis, and according to acceleration of gravity in X-axis, the component size on Y-axis and Z axis is calculated the angle of inclination of mobile terminal.
The present invention has following beneficial effect with respect to prior art:
By optical sensor and acceleration transducer, combine, the difference solved because of the mobile terminal angle of inclination causes optical sensor erroneous judgement current environment luminous intensity to change, thus the brightness of mistuning display backlight, and then the problem that causes display screen to glimmer.When the display screen bright screen, detect the angle of inclination A of current mobile terminal by acceleration transducer, when optical sensor collects current ambient light intensity and changes, first do not upload new ambient light intensity, but at first by acceleration transducer, detect the angle of inclination B of current mobile terminal, judge whether the difference between angle of inclination A and angle of inclination B is greater than the angle threshold of setting, be judged as YES, think to cause optical sensor erroneous judgement current environment luminous intensity to change due to the variation at mobile terminal angle of inclination, and then judge that current ambient light intensity does not change, maintain the existing backlight illumination of display screen.Reduce so to a great extent the probability of mistuning display backlight brightness, avoided display screen scintillation to occur, optimized user's experience.
The accompanying drawing explanation
Fig. 1 is that the present invention regulates the schematic flow sheet of the method for display backlight in conjunction with acceleration transducer;
The structural representation block diagram of a kind of mobile terminal of the present invention during Fig. 2.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.In conjunction with the embodiment in the present invention, those of ordinary skills, not making under the creative work prerequisite the every other embodiment obtained, belong to the scope of protection of the invention.
Embodiment 1:
Embodiments of the invention 1 provide a kind of method of regulating display backlight in conjunction with acceleration transducer, be intended to solve when the mobile terminal angle of inclination changes, avoid optical sensor erroneous judgement current environment luminous intensity to change, thereby the backlight illumination of mistuning joint display screen, the problem that causes display screen to glimmer.Below in conjunction with accompanying drawing, the present embodiment is elaborated.
Fig. 1 is the schematic flow sheet of the embodiment of the present invention 1, please refer to Fig. 1, and the method for the present embodiment comprises the following steps:
S1, when mobile terminal receives the bright screen request, start optical sensor, the light well that optical sensor is provided with by mobile terminal gathers current ambient light intensity (being made as X), and the ambient light intensity X collected is uploaded to application layer; After application layer receives ambient light intensity X, the request of response bright screen, and regulate the corresponding backlight illumination of display screen according to this ambient light intensity X; Also perform step S2 simultaneously;
In the Android of mobile terminal system, the framework of transducer is application layer, hardware device level and driving layer from top to bottom successively, the data of optical sensor and acceleration transducer are all to drive layer to obtain, then successively to upper layer transfers, finally be delivered to application layer and processed.Such as, optical sensor uploads to application layer by ambient light intensity after collecting the current environment luminous intensity, application layer according to ambient light intensity to display backlight brightness processed.And the angle of inclination value of mobile terminal is also carried out the computing acquisition in application layer.
As a kind of preferred scheme, in described mobile terminal, preset the corresponding relation of ambient light intensity and backlight illumination, before dispatching from the factory, the corresponding relation of described ambient light intensity and backlight illumination is built in mobile terminal.When optical sensor uploads to application layer by current ambient light intensity X, when application layer receives ambient light intensity X, the backlight illumination of correspondence with it arranged while dispatching from the factory with regard to basis is set the display screen of mobile terminal.In order to allow, make the user read purpose soft, not dazzling and that reach the saving power supply.When ambient light intensity is weak, the backlight illumination of display screen should be adjusted to reduced levels, and when ambient light intensity is stronger, the backlight illumination of display screen should be adjusted to higher level.
S2, open acceleration transducer, and detect the angle of inclination A of current mobile terminal by acceleration transducer;
Preferably, described acceleration transducer is 3-axis acceleration sensor; The detailed process that described acceleration transducer detects the current mobile terminal angle of inclination is as follows:
Acceleration transducer detects acceleration of gravity in X-axis, three axle component size of Y-axis and Z axis, and according to acceleration of gravity in X-axis, the component size of Y-axis and Z axis is calculated the angle of inclination of mobile terminal.
Because the direction vector of acceleration of gravity must be vertically downward, and the value of acceleration of gravity constant be 9.8, as long as therefore learn that acceleration of gravity is in X-axis, the component on Y-axis and Z axis, the angle of inclination that just can calculate current mobile terminal.
At this, the mobile phone of take describes as example: because the direction vector of acceleration of gravity must be vertically downward, and the value of acceleration of gravity constant be 9.8, therefore, during state when mobile phone in vertical horizontal screen, the Z axis value of acceleration of gravity is 9.8, the X-axis value is 0, and the Y-axis value is also 0.
And when mobile phone during in heeling condition, acceleration of gravity vertically downward will be in X-axis, all has component on three spatial axes of Y-axis and Z axis, angle of inclination is different, and three axle components are also different.Calculative determination is carried out according to acceleration of gravity component size on three axles in the angle of inclination of described mobile phone.
For example when mobile phone in right side during vertical horizontal screen state, the angle of inclination of mobile phone is 90 degree, when mobile phone, during in the horizontal screen state of left vertical, the angle of inclination of mobile phone is 270 degree.And when mobile phone during in vertical perpendicular screen state, the angle of inclination of mobile phone is 0 degree or 360 degree.
Inevitable, at display screen, under the bright screen state, described optical sensor continues to gather current ambient light intensity, and judges whether the current environment luminous intensity changes, and is judged as NO, and continues to gather, and is judged as YES, and enters step S3;
S3, when described optical sensor collects ambient light intensity and changes, when if ambient light intensity becomes Y by X, first do not upload new ambient light intensity Y, at first, detect the now angle of inclination B of mobile terminal by acceleration transducer, and judge whether the difference between angle of inclination A and angle of inclination B is greater than the angle threshold of setting; Be judged as YES, perform step S4, be judged as NO, perform step S5;
As a kind of preferred scheme, described angle threshold values is 15 degree.
Certainly, in actual applications, described angle threshold values can also be worth for other, and different mobile terminal threshold values is also different, specifically can optionally set.Certainly, also can be changed the angle threshold values of setting.The present embodiment only provides a preferred angle threshold values.
S4, explanation mobile terminal still in the environment of former ambient light intensity X, are cancelled and are uploaded new ambient light intensity Y, because application layer does not now receive new ambient light intensity, therefore maintain the original backlight illumination of display screen;
Variation has occurred in the ambient light intensity of S5, explanation mobile terminal environment of living in, and optical sensor uploads to application layer by new ambient light intensity Y, after application layer receives new ambient light intensity Y, readjusts the backlight illumination of display screen according to this ambient light intensity Y.
For the ease of understanding, take while dispatching from the factory display screen is set backlight illumination as six mobile phones that increase progressively brightness degree are example, describe.Backlight illumination for example, is set when, mobile phone dispatches from the factory is: six of 10% brightness degree, 20% brightness degree, 30% brightness degree, 50% brightness degree, 70% brightness degree and 100% brightness degree increase progressively grade.And also be provided with brightness degree corresponding to different ambient light intensities while dispatching from the factory, the angle threshold values of mobile phone is 15 degree simultaneously.Below take practical application and describe as example:
The ambient light intensity arranged when table 1 dispatches from the factory for mobile phone and the corresponding relation (certainly only illustrate here, different mobile terminals and different optical sensors arrange all can be different) of backlight illumination.
| Ambient light intensity | Backlight illumination |
| Be less than 30 | 10% |
| 30～300 | 20% brightness degree |
| 300～800 | 30% brightness degree |
| 800～2500 | 50% brightness degree |
| 2500～5500 | 70% brightness degree |
| More than 5500 | 100% brightness degree |
Table 1
For example: current ambient light intensity is 200, and the backlight lightening of display screen is 20% brightness degree.Detect the angle of inclination A of current mobile terminal by acceleration transducer simultaneously.
When optical sensor collects current ambient light intensity and becomes 500, first do not upload this ambient light intensity, but at first the Negotiation speed transducer detects the angle of inclination B of current mobile terminal; And judge whether the difference between angle of inclination A and angle of inclination B is greater than 15 degree.
Such as, if the difference between angle of inclination A and angle of inclination B is 40 degree, judgement is that difference due to the mobile phone angle of inclination causes the luminous intensity that enters light well to increase, but actual ambient light intensity does not change.For example, it may be the change due to the mobile phone angle of inclination, cause the lightlng hole on mobile phone to face light source, under the reason of light source direct projection lightlng hole, cause optical sensor to think that current environment light is 500 by mistake, still, when the mobile phone pendulum with after going back to original much the same position, ambient light sensor is inevitable think that again the current environment luminous intensity becomes 200 from 500 by mistake, thereby the backlight illumination of high-frequency mistuning mobile phone display screen causes the display screen flicker.And in the present invention, now should cancel and upload new ambient light intensity 500, application layer, owing to not receiving new ambient light intensity 500, therefore maintains existing 20% brightness degree of mobile phone display screen, effectively solves the problem of display screen flicker.
If the difference between angle of inclination A and angle of inclination B is 10 degree, judge that current ambient light intensity changes, ambient light intensity becomes 500 by 200, optical sensor is reported to application layer by new ambient light intensity 500, after application layer receives new ambient light intensity 500, the backlight illumination of adjusting cellphone display screen is 30% brightness degree.Wherein, the value of above-mentioned ambient light intensity is the data value that the direct register from ambient light sensor the inside reads out.
At this, it is emphasized that in the present invention, described mobile terminal can be that mobile phone, e-book, PDA(Personal Digital Assistant), palmtop PC, human-computer interaction terminal or other have the hand held terminal unit of Presentation Function.
Embodiment 2
Embodiments of the invention 2 provide and have adopted above-mentioned a kind of mobile terminal of regulating the method for display backlight in conjunction with acceleration transducer, and Fig. 2 is the structural representation block diagram that the embodiment of the present invention 2 provides.This mobile terminal comprises:
Whether display screen detection module 10, receive the bright screen request for detection of display screen; Wherein, the bright screen request can comprise various ways, take mobile phone as example, and described bright screen request includes but not limited to phone, note prompting, or presses power button;
Preferably, described acceleration transducer 30 is 3-axis acceleration sensor.The detailed process that this 3-axis acceleration sensor detects the current mobile terminal angle of inclination is as follows:
Acceleration transducer detects acceleration of gravity in X-axis, three axle component size of Y-axis and Z axis, and by acceleration of gravity, in X-axis, the component size of Y-axis and Z axis is calculated the angle of inclination of mobile terminal.
Because the direction vector of acceleration of gravity must be vertically downward, and the value of acceleration of gravity constant be 9.8, as long as therefore learn that acceleration of gravity is in X-axis, the component on Y-axis and Z axis, the angle of inclination that just can calculate current mobile terminal.
At this, the mobile phone of take describes as example: because the direction vector of acceleration of gravity must be vertically downward, and the value of acceleration of gravity constant be 9.8, therefore, during state when mobile phone in vertical horizontal screen, the Z axis value of acceleration of gravity is 9.8, the X-axis value is 0, and the Y-axis value is also 0.
And when mobile phone during in heeling condition, acceleration of gravity vertically downward, will be in X-axis, all has component on three spatial axes of Y-axis and Z axis, angle of inclination is different, and three axle components are also different.The angle of inclination of described mobile phone is to carry out calculative determination according to the size of acceleration of gravity three axle components.
For example when mobile phone in right side during vertical horizontal screen state, the angle of inclination of mobile phone is 90 degree, when mobile phone, during in the horizontal screen state of left vertical, the angle of inclination of mobile phone is 270 degree.And when mobile phone during in vertical perpendicular screen state, the angle of inclination of mobile phone is 0 degree or 360 degree.
Threshold value comparison module 40, detect for judging described acceleration transducer 30 angle threshold whether the angle of inclination A that obtains and the difference between the B of angle of inclination are greater than setting;
As a kind of preferred scheme, described angle threshold values can be 15 degree.Certainly, in actual applications, described angle threshold values can also be worth for other, different mobile terminals, and described angle threshold values is also different, specifically can optionally set or change.
In the present embodiment, preferred, the corresponding relation of described ambient light intensity and backlight illumination is before dispatching from the factory, to be built in the memory module 60 of mobile terminal.When optical sensor 20 uploads to application layer by current ambient light intensity, after application layer receives luminous intensity, with regard to the backlight illumination according to corresponding with it, the display backlight to mobile terminal is arranged.In order to allow, make the user read purpose soft, not dazzling and that reach the saving power supply.When ambient light intensity is weak, the backlight illumination of display screen should be adjusted to reduced levels, and when ambient light intensity is stronger, the backlight illumination of display screen should be adjusted to higher level.
Backlight illumination adjustment module 70, for the ambient light intensity of uploading according to described optical sensor 20, and regulate the backlight illumination of display screen according to the corresponding relation of the interior default ambient light intensity of described memory module 60 and backlight illumination.
It should be noted that, in above-mentioned mobile terminal embodiment, included modules is just divided according to function logic, but be not limited to above-mentioned division, as long as can realize corresponding function; In addition, the concrete title of each functional module also, just for the ease of mutual differentiation, is not limited to protection scope of the present invention.
Described mobile terminal can be that mobile phone, e-book, PDA(Personal Digital Assistant), palmtop PC, human-computer interaction terminal or other have the hand held terminal unit of Presentation Function.
In addition, one of ordinary skill in the art will appreciate that all or part of step realized in the various embodiments described above method is to come the hardware that instruction is relevant to complete by program, corresponding program can be stored in a computer read/write memory medium, described storage medium, as ROM/RAM, disk or CD etc.
Above-described embodiment is preferably execution mode of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present invention and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection scope of the present invention.
Claims (7)
1. a method of regulating display backlight in conjunction with acceleration transducer, is characterized in that, the method comprises the following steps:
S1, when mobile terminal receives the bright screen request, open optical sensor, optical sensor gathers current ambient light intensity by light well, and the ambient light intensity collected is uploaded to application layer, after application layer receives ambient light intensity, regulate the backlight illumination of display screen;
S2, open acceleration transducer, and detect the angle of inclination A of current mobile terminal by acceleration transducer;
S3, when described optical sensor collects ambient light intensity and changes, first do not upload new ambient light intensity, at first, by acceleration transducer, detect the now angle of inclination B of mobile terminal, and judge whether the difference between angle of inclination A and angle of inclination B is greater than the angle threshold of setting; Be judged as YES, perform step S4, be judged as NO, perform step S5;
S4, explanation mobile terminal still, in the environment of former ambient light intensity, are cancelled and are uploaded new ambient light intensity, maintain the original backlight illumination of display screen;
Variation has occurred in S5, explanation ambient light intensity, and optical sensor uploads to application layer by new ambient light intensity, after application layer receives new ambient light intensity, readjusts the backlight illumination of display screen.
2. method of regulating display backlight in conjunction with acceleration transducer according to claim 1, it is characterized in that, preset the corresponding relation of ambient light intensity and backlight illumination in mobile terminal, and the corresponding relation of described ambient light intensity and backlight illumination is built in mobile terminal before dispatching from the factory.
3. method of regulating display backlight in conjunction with acceleration transducer according to claim 1, is characterized in that, the detailed process that described acceleration transducer detects the current mobile terminal angle of inclination is as follows:
Acceleration transducer detects acceleration of gravity in X-axis, three axle component size of Y-axis and Z axis, and according to acceleration of gravity in X-axis, the component size on Y-axis and Z axis is calculated the angle of inclination of mobile phone.
4. method of regulating display backlight in conjunction with acceleration transducer according to claim 1, is characterized in that, described angle threshold values is 15 degree.
5. one kind adopts the described mobile terminal of regulating the method for display backlight in conjunction with acceleration transducer of any one in claim 1-4, it is characterized in that, this mobile terminal comprises:
Whether the display screen detection module, receive the bright screen request for detection of the display screen of mobile terminal;
Optical sensor, when described display screen detection module detects the bright screen request, start automatically, by the light well arranged on mobile terminal, gathers current ambient light intensity; And the ambient light intensity collected is uploaded to application layer;
Acceleration transducer, when described display screen detection module detects the bright screen request, automatically start, angle of inclination A for detection of current mobile terminal, when described light sensors changes to ambient light intensity, at first by acceleration transducer, detect the now angle of inclination B of mobile terminal;
The threshold value comparison module, detect for judging described acceleration transducer the angle threshold whether the angle of inclination A that obtains and the difference between the B of angle of inclination are greater than setting;
Executive Module, process respectively according to the judged result of threshold value comparison module, if the difference between angle of inclination A and angle of inclination B is greater than the angle threshold of setting, makes so optical sensor cancel and upload new ambient light intensity; If the difference between angle of inclination A and angle of inclination B is less than the angle threshold of setting, make so optical sensor upload new ambient light intensity;
Memory module, for the corresponding relation of predefined ambient light intensity and backlight illumination in memory mobile terminal;
The backlight illumination adjustment module, for the ambient light intensity of uploading according to described optical sensor, and regulate the backlight illumination of display screen according to the corresponding relation of ambient light intensity default in described memory module and backlight illumination.
6. a mobile terminal according to claim 5, is characterized in that, described acceleration transducer is 3-axis acceleration sensor, and the detailed process that this 3-axis acceleration sensor detects the current mobile terminal angle of inclination is as follows:
Acceleration transducer detects acceleration of gravity in X-axis, three axle component size of Y-axis and Z axis, and according to acceleration of gravity in X-axis, the component size on Y-axis and Z axis is calculated the angle of inclination of mobile terminal.
7. mobile terminal according to claim 5, is characterized in that, described angle threshold values is 15 degree.
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