CN1946097A - Method and device for regulating back light brightness and movable terminal - Google Patents
Method and device for regulating back light brightness and movable terminal Download PDFInfo
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- CN1946097A CN1946097A CN 200610150541 CN200610150541A CN1946097A CN 1946097 A CN1946097 A CN 1946097A CN 200610150541 CN200610150541 CN 200610150541 CN 200610150541 A CN200610150541 A CN 200610150541A CN 1946097 A CN1946097 A CN 1946097A
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Abstract
This invention discloses an adjusting method for brightness of backlight lamps, a device and a mobile terminal, in which, the method includes: converting tested outside light strength to electric signal, which is processed for A/D conversion to determine the brightness level of the lamp based on the converted signal and the corresponding relation between the set light strength and the backlight lamp and adjust the control signal of the lamp to adjust the brightness of the lamp so as to turn mobile terminals to control brightness of backlight lamps based on the set of the user.
Description
Technical field
The present invention relates to electronic technology field, relate in particular to brightness of backlight control method, device and portable terminal.
Background technology
At present, mobile devices such as mobile phone, palmtop PC, digital camera all provide information by screen to the user, in order to make the user when light is more weak, still can read information on the screen, adopt backlight to heighten the brightness of screen usually so that suitable light to be provided to the user; In addition, consider the needs of user's operating equipment when light is more weak, also backlight is set, make the user still can operating equipment when light is more weak at the keyboard place.Backlight lamp control method commonly used is: when the user operated (as start or button etc.) to equipment, backlight entered illuminating state, if user's operating equipment not in the certain hour, backlight extinguishes; This scheme is not considered the ambient light line strength, as long as the user has carried out associative operation and can light backlight; And in fact, by day or light when strong the user be difficult to perceive existence backlight, light the backlight meaning in this case not very, can expend the equipment electric weight on the contrary.
A kind of scheme that provides in the prior art is: detect extraneous light intensity by Photosensing Units, light signal is converted to the signal of telecommunication, with control circuit this signal of telecommunication is changed into the brightness of control signal control backlight again.By this method, can under different light rays intensity, automatically backlight be adjusted to suitable brightness, thereby can save the electricity consumption of equipment amount; Yet this scheme is not considered the personal like of user to brightness of backlight, can not support user's personal settings, thereby lacks flexibility.
Summary of the invention
The technical problem to be solved in the present invention provides brightness of backlight control method, device and portable terminal, make portable terminal can according to the user be provided with control backlight brightness.
For solving the problems of the technologies described above, the objective of the invention is to be achieved through the following technical solutions:
A kind of brightness of backlight control method comprises:
Detected ambient light line strength is converted to the signal of telecommunication;
The described signal of telecommunication is carried out analog-to-digital conversion;
Reach the light intensity and the corresponding relation between brightness of backlight that have been provided with according to the digital signal that obtains after the analog-to-digital conversion and determine the brightness of backlight rank, the size of corresponding adjustment brightness of backlight control signal;
By described control signal brightness of backlight is regulated.
Optionally, after being regulated, brightness of backlight also comprises: show current backlight lamp gray scale.
Optionally, after being regulated, brightness of backlight also comprises:
Current backlight lamp gray scale is modified;
Adjust the brightness of backlight control signal according to the gray scale after the change, brightness of backlight is regulated by this control signal.
Optionally, also comprise after current backlight lamp gray scale is modified: the brightness of backlight rank that is provided with after the change is corresponding with current light intensity rank.
Optionally, be provided with after the change the brightness of backlight rank with also comprise after current light intensity rank is corresponding: adjust other light intensity ranks and other corresponding relation of backlight level.
A kind of brightness of backlight adjusting device comprises:
Photosensitive circuit is used to detect extraneous light intensity, offers analog to digital conversion circuit after detected light intensity is converted to the signal of telecommunication;
AD conversion unit, the electrical signal conversion that is used for photosensitive circuit output is to offer processing unit after the digital signal;
Processing unit is used for determining the brightness of backlight rank, the size of corresponding adjustment brightness of backlight control signal according to the digital signal of analog to digital conversion circuit output and the light intensity and the corresponding relation between brightness of backlight of setting;
Drive circuit is used for according to described control signal brightness of backlight being regulated.
Optionally, described device also comprises display unit; Processing unit also is used for showing current backlight lamp gray scale by drive circuit control display unit.
Optionally, described device also comprises input unit, is used to accept the brightness of backlight rank changed information that the user imports, and this information is offered processing unit; Processing unit also is used for adjusting according to this changed information the size of brightness of backlight control signal.
Optionally, the described processing unit brightness of backlight rank that also is used to be provided with after current light intensity rank and the change is corresponding.
Optionally, described processing unit also is used to adjust other light intensity ranks and other corresponding relation of backlight level.
A kind of portable terminal comprises the brightness of backlight adjusting device, and this device specifically comprises:
Photosensitive circuit is used to detect extraneous light intensity, offers analog to digital conversion circuit after detected light intensity is converted to the signal of telecommunication;
AD conversion unit, the electrical signal conversion that is used for photosensitive circuit output is to offer processing unit after the digital signal;
Processing unit is used for determining the brightness of backlight rank, the size of corresponding adjustment brightness of backlight control signal according to the digital signal of analog to digital conversion circuit output and the light intensity and the corresponding relation between brightness of backlight of setting;
Drive circuit is used for according to described control signal brightness of backlight being regulated.
As can be seen from the above technical solutions, the present invention has the following advantages:
In the solution of the present invention, obtain the ambient light intensity level not after, can brightness of backlight be adjusted to and the corresponding gray scale of current light intensity rank according to the ambient light intensity level that has been provided with other corresponding relation of brightness of backlight level; Because the user can be provided with the brightness of backlight rank of different light intensity rank correspondence by the hobby of oneself, so the present invention can have better flexibility according to user's personal settings control brightness of backlight.
Description of drawings
Fig. 1 is the structure chart of brightness of backlight adjusting device of the present invention;
Fig. 2 is the flow chart of brightness of backlight control method embodiment one of the present invention;
Fig. 3 is the schematic diagram of light intensity and brightness of backlight classification corresponding relation one;
Fig. 4 is the flow chart of brightness of backlight control method embodiment two of the present invention;
Fig. 5 is the schematic diagram of light intensity and brightness of backlight classification corresponding relation two.
Embodiment
Basic design of the present invention is: the inter-step corresponding relation of light intensity rank and brightness of backlight is set, terminal can be adjusted into brightness of backlight and the pairing rank of current light intensity automatically according to this corresponding relation.
At first brightness of backlight adjusting device of the present invention is described.With reference to figure 1, this device comprises photosensitive circuit 101, analog to digital conversion circuit 102, memory cell 103, processing unit 104, drive circuit 105 and backlight 106; Wherein:
Photosensitive circuit 101 is used for detecting extraneous light intensity by Photosensing Units; Also be used for detected light intensity is converted to the signal of telecommunication, and this signal of telecommunication is offered analog to digital conversion circuit 102.
Analog to digital conversion circuit 102 is used for the signal of telecommunication of photosensitive circuit 101 output is sampled, and offers processing unit 104 after being converted into digital signal.
Memory cell 103 is used to preserve the digital signal of analog to digital conversion circuit 102 exportable different sizes and the corresponding relation between other corresponding relation of light intensity level, light intensity rank and the inter-step corresponding relation of brightness of backlight and brightness of backlight rank and brightness of backlight control signal.
Processing unit 104 is used for determining current light intensity rank according to described digital signal and other corresponding relation of light intensity level of the digital signal of analog to digital conversion circuit 102 outputs and memory cell 103 preservations, obtain the brightness of backlight rank corresponding according to other corresponding relation of light intensity rank and brightness of backlight level with current light intensity rank, and according to the size of the corresponding adjustment brightness of backlight of the corresponding relation control signal between brightness of backlight rank and brightness of backlight control signal.
Drive circuit 105 is used for according to the control signal of processing unit 104 outputs the brightness of backlight 106 being regulated.
In addition, this device also comprises display unit 107 and input unit 108;
Processing unit 104 also is used for showing by drive circuit 105 control display units 107 gray scale of current backlight lamp;
Input unit 108 is used to accept the brightness of backlight rank changed information that the user imports, and this information is offered processing unit 104;
The changed information that processing unit 104 is used for providing according to input unit 104 is adjusted the control signal size of brightness of backlight; It is corresponding with the brightness of backlight rank after the change to be used for that also memory cell 103 current light intensity ranks are set; Can also further corresponding adjustment store other optical light levels and other corresponding relation of backlight level in Unit 103.
With reference to figure 2, the embodiment one of brightness of backlight control method of the present invention specifically comprises:
Step 201, light intensity rank and the inter-step corresponding relation of brightness of backlight are set.
For realizing the solution of the present invention, need carry out classification to light intensity and brightness of backlight, the user can be according to personal like's setting corresponding relation between the two.
In general, the light intensity that mobile device can be responded to is in certain scope, the signal of telecommunication that carries out after opto-electronic conversion and the analog-to-digital conversion also has a scope accordingly, therefore, for light intensity, can divide the scope of changing the back signal, make each the corresponding light intensity rank of numerical value among a small circle after the division; On the other hand, also need to be provided with the corresponding relation of each gray scale of backlight and brightness of backlight control signal numerical value.
In an embodiment of the present invention light intensity and brightness of backlight are divided into 8 grades, with reference to figure 3, with SL1, SL2 ..., SL8 name light intensity rank, with BL1, BL2 ..., BL8 name brightness of backlight rank, and it is corresponding with BL1 that SL1 is set, and SL2 is corresponding with BL2, by that analogy.And in actual applications, can carry out different classifications as required and corresponding relation is set.
Step 202, detect the ambient light line strength, detected light intensity is converted to the signal of telecommunication by Photosensing Units.
Described Photosensing Units can be photo resistance, photodiode etc., in actual applications, because various light-sensitive elements should be selected the light-sensitive element close to the response curve of wavelength of light with human eye to the response curve difference of wavelength of light as far as possible.
Step 203, be the digital signal that processing unit can be handled with described electrical signal conversion.
Step 204, processing unit are determined current light intensity rank according to the value of this signal and signal and other corresponding relation of light intensity level that has been provided with.
Can determine in which scope of being divided which rank light intensity belongs to by judging that this signal value belongs to.
Step 205, determine the brightness of backlight rank corresponding with current light intensity rank according to the light intensity rank that has been provided with and other corresponding relation of brightness of backlight level.
For example, if current ambient light intensity level is not SL3,, can determine that then pairing brightness of backlight is BL3 according to the corresponding relation of Fig. 2.
Step 206, adjust the size of brightness of backlight control signal according to the corresponding relation between this brightness of backlight rank and brightness of backlight control signal.
Step 207, the brightness of backlight is regulated by described control signal.
Step 208, demonstration current backlight lamp gray scale.
In embodiment one, mobile device can be according to the brightness of light intensity rank of being preserved and the inter-step corresponding relation control of brightness of backlight backlight; In the present invention, can also change light intensity rank and other corresponding relation of brightness of backlight level of preserving, to satisfy the demand of user individual.With reference to figure 4, the embodiment two of brightness of backlight control method of the present invention comprises:
Described Photosensing Units can be photo resistance, photodiode etc., in actual applications, because various light-sensitive elements should be selected the light-sensitive element close to the response curve of wavelength of light with human eye to the response curve difference of wavelength of light as far as possible.
For example, if current ambient light intensity level is not SL3,, can determine that then pairing brightness of backlight is BL3 according to the corresponding relation of Fig. 2.
For instance, as shown in Figure 5, if the user thinks that the brightness of backlight that equipment provided under current light intensity is not enough, then can change current backlight lamp gray scale, the gray scale of current backlight lamp is brought up to BL4 from BL3, and processing unit can be provided with the brightness of passing through the corresponding increase backlight of control signal according to this.
Behind current backlight lamp gray scale and the light intensity grade renewal, can keep other optical light levels and other corresponding relation of brightness of backlight level constant, also can further adjust other optical light levels and other corresponding relation of backlight level.
The present invention also provides a kind of portable terminal, comprises the brightness of backlight adjusting device, and this device specifically comprises photosensitive circuit, analog to digital conversion circuit, memory cell, processing unit, drive circuit and backlight; Wherein:
Photosensitive circuit is used for detecting extraneous light intensity by Photosensing Units; Also be used for detected light intensity is converted to the signal of telecommunication, and this signal of telecommunication is offered analog to digital conversion circuit.
Analog to digital conversion circuit is used for the signal of telecommunication of photosensitive circuit output is sampled, and offers processing unit after being converted into digital signal.
Memory cell is used to preserve the digital signal of the exportable different sizes of analog to digital conversion circuit and the corresponding relation between other corresponding relation of light intensity level, light intensity rank and the inter-step corresponding relation of brightness of backlight and brightness of backlight rank and brightness of backlight control signal.
Processing unit is used for determining current light intensity rank according to described digital signal and other corresponding relation of light intensity level of the digital signal of analog to digital conversion circuit output and memory cell preservation, obtain the brightness of backlight rank corresponding according to other corresponding relation of light intensity rank and brightness of backlight level with current light intensity rank, and according to the size of the corresponding adjustment brightness of backlight of the corresponding relation control signal between brightness of backlight rank and brightness of backlight control signal.
Drive circuit is used for according to the control signal of processing unit output the brightness of backlight being regulated.
In addition, this device also comprises display unit and input unit;
Processing unit also is used for showing by drive circuit control display unit the gray scale of current backlight lamp;
Input unit is used to accept the brightness of backlight rank changed information that the user imports, and this information is offered processing unit;
The changed information that processing unit is used for providing according to input unit is adjusted the control signal size of brightness of backlight; It is corresponding with the brightness of backlight rank after the change to be used for that also the current light intensity rank of memory cell is set; Other optical light levels and other corresponding relation of backlight level in all right further corresponding adjustment memory cell.
Portable terminal recited above can be mobile phone, palmtop PC or other mobile devices.
More than brightness of backlight control method provided by the present invention, device and portable terminal are described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (11)
1, a kind of brightness of backlight control method is characterized in that, comprising:
Detected ambient light line strength is converted to the signal of telecommunication;
The described signal of telecommunication is carried out analog-to-digital conversion;
Reach the light intensity and the corresponding relation between brightness of backlight that have been provided with according to the digital signal that obtains after the analog-to-digital conversion and determine the brightness of backlight rank, the size of corresponding adjustment brightness of backlight control signal;
By described control signal brightness of backlight is regulated.
2, brightness of backlight control method as claimed in claim 1 is characterized in that, also comprises after brightness of backlight is regulated: show current backlight lamp gray scale.
3, brightness of backlight control method as claimed in claim 1 or 2 is characterized in that, also comprises after brightness of backlight is regulated:
Current backlight lamp gray scale is modified;
Adjust the brightness of backlight control signal according to the gray scale after the change, brightness of backlight is regulated by this control signal.
4, brightness of backlight control method as claimed in claim 3 is characterized in that, also comprises after current backlight lamp gray scale is modified: the brightness of backlight rank that is provided with after the change is corresponding with current light intensity rank.
5, brightness of backlight control method as claimed in claim 4 is characterized in that, be provided with after the change the brightness of backlight rank with also comprise after current light intensity rank is corresponding: adjust other light intensity ranks and other corresponding relation of backlight level.
6, a kind of brightness of backlight adjusting device is characterized in that, comprising:
Photosensitive circuit is used to detect extraneous light intensity, offers analog to digital conversion circuit after detected light intensity is converted to the signal of telecommunication;
AD conversion unit, the electrical signal conversion that is used for photosensitive circuit output is to offer processing unit after the digital signal;
Processing unit is used for determining the brightness of backlight rank, the size of corresponding adjustment brightness of backlight control signal according to the digital signal of analog to digital conversion circuit output and the light intensity and the corresponding relation between brightness of backlight of setting;
Drive circuit is used for according to described control signal brightness of backlight being regulated.
7, brightness of backlight adjusting device as claimed in claim 6 is characterized in that, also comprises display unit; Processing unit also is used for showing current backlight lamp gray scale by drive circuit control display unit.
8, as claim 6 or 7 described brightness of backlight adjusting devices, it is characterized in that, also comprise input unit, be used to accept the brightness of backlight rank changed information that the user imports, and this information is offered processing unit; Processing unit also is used for adjusting according to this changed information the size of brightness of backlight control signal.
9, brightness of backlight adjusting device as claimed in claim 8 is characterized in that, it is corresponding with the brightness of backlight rank after the change that described processing unit is used to that also current light intensity rank is set.
10, brightness of backlight adjusting device as claimed in claim 9 is characterized in that, described processing unit also is used to adjust other light intensity ranks and other corresponding relation of backlight level.
11, a kind of portable terminal is characterized in that, described portable terminal comprises the brightness of backlight adjusting device, and this device specifically comprises:
Photosensitive circuit is used to detect extraneous light intensity, offers analog to digital conversion circuit after detected light intensity is converted to the signal of telecommunication;
AD conversion unit, the electrical signal conversion that is used for photosensitive circuit output is to offer processing unit after the digital signal;
Processing unit is used for determining the brightness of backlight rank, the size of corresponding adjustment brightness of backlight control signal according to the digital signal of analog to digital conversion circuit output and the light intensity and the corresponding relation between brightness of backlight of setting;
Drive circuit is used for according to described control signal brightness of backlight being regulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610150541 CN1946097A (en) | 2006-10-16 | 2006-10-16 | Method and device for regulating back light brightness and movable terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610150541 CN1946097A (en) | 2006-10-16 | 2006-10-16 | Method and device for regulating back light brightness and movable terminal |
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| CN1946097A true CN1946097A (en) | 2007-04-11 |
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| CN 200610150541 Pending CN1946097A (en) | 2006-10-16 | 2006-10-16 | Method and device for regulating back light brightness and movable terminal |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101409047B (en) * | 2007-10-10 | 2010-09-29 | 群康科技(深圳)有限公司 | Backlight regulating circuit |
| CN101345025B (en) * | 2007-07-13 | 2010-11-10 | 群康科技(深圳)有限公司 | Backlight regulation circuit and backlight regulating method |
| CN102013233A (en) * | 2010-10-20 | 2011-04-13 | 中兴通讯股份有限公司 | Backlight circuit control method, backlight circuit and booster circuit |
| CN101645980B (en) * | 2008-08-07 | 2012-09-12 | 宏达国际电子股份有限公司 | Hand-held device and power saving method thereof |
| CN102946494A (en) * | 2012-11-27 | 2013-02-27 | 广东欧珀移动通信有限公司 | Mobile terminal and method for automatically adjusting backlight brightness |
| CN104575448A (en) * | 2015-02-12 | 2015-04-29 | 广东欧珀移动通信有限公司 | Backlight adjustment method and backlight adjustment device for display device |
| WO2015143688A1 (en) * | 2014-03-28 | 2015-10-01 | 华为终端有限公司 | Method for adjusting button light of mobile terminal, and mobile terminal |
| CN105162928A (en) * | 2015-10-15 | 2015-12-16 | 广州视源电子科技股份有限公司 | Method and device for adjusting screen brightness of mobile terminal |
| CN105913806A (en) * | 2015-02-23 | 2016-08-31 | 三星显示有限公司 | Display Apparatus And Driving Method Thereof |
| CN106455271A (en) * | 2016-11-22 | 2017-02-22 | 浪潮（苏州）金融技术服务有限公司 | Lamplight component dimming method, device and system |
| CN108267223A (en) * | 2017-01-03 | 2018-07-10 | 中兴通讯股份有限公司 | A kind of method and apparatus of calibration environment optical sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101345025B (en) * | 2007-07-13 | 2010-11-10 | 群康科技(深圳)有限公司 | Backlight regulation circuit and backlight regulating method |
| CN101409047B (en) * | 2007-10-10 | 2010-09-29 | 群康科技(深圳)有限公司 | Backlight regulating circuit |
| CN101645980B (en) * | 2008-08-07 | 2012-09-12 | 宏达国际电子股份有限公司 | Hand-held device and power saving method thereof |
| CN102013233A (en) * | 2010-10-20 | 2011-04-13 | 中兴通讯股份有限公司 | Backlight circuit control method, backlight circuit and booster circuit |
| WO2012051817A1 (en) * | 2010-10-20 | 2012-04-26 | 中兴通讯股份有限公司 | Backlight circuit control method, backlight circuit and booster circuit |
| CN102013233B (en) * | 2010-10-20 | 2014-02-05 | 中兴通讯股份有限公司 | Backlight circuit control method, backlight circuit and booster circuit |
| US9232594B2 (en) | 2010-10-20 | 2016-01-05 | Zte Corporation | Backlight circuit control method, backlight circuit and booster circuit |
| CN102946494A (en) * | 2012-11-27 | 2013-02-27 | 广东欧珀移动通信有限公司 | Mobile terminal and method for automatically adjusting backlight brightness |
| WO2015143688A1 (en) * | 2014-03-28 | 2015-10-01 | 华为终端有限公司 | Method for adjusting button light of mobile terminal, and mobile terminal |
| CN104575448A (en) * | 2015-02-12 | 2015-04-29 | 广东欧珀移动通信有限公司 | Backlight adjustment method and backlight adjustment device for display device |
| CN105913806A (en) * | 2015-02-23 | 2016-08-31 | 三星显示有限公司 | Display Apparatus And Driving Method Thereof |
| CN105913806B (en) * | 2015-02-23 | 2020-06-05 | 三星显示有限公司 | Display device and driving method thereof |
| CN105162928A (en) * | 2015-10-15 | 2015-12-16 | 广州视源电子科技股份有限公司 | Method and device for adjusting screen brightness of mobile terminal |
| CN106455271A (en) * | 2016-11-22 | 2017-02-22 | 浪潮（苏州）金融技术服务有限公司 | Lamplight component dimming method, device and system |
| CN108267223A (en) * | 2017-01-03 | 2018-07-10 | 中兴通讯股份有限公司 | A kind of method and apparatus of calibration environment optical sensor |
| CN108267223B (en) * | 2017-01-03 | 2020-11-03 | 中兴通讯股份有限公司 | Method and device for calibrating ambient light sensor |
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