CN101079238A - Hand-held electronic device for automatically regulating backlight brightness and backlight brightness regulation method - Google Patents
Hand-held electronic device for automatically regulating backlight brightness and backlight brightness regulation method Download PDFInfo
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- CN101079238A CN101079238A CN 200610085055 CN200610085055A CN101079238A CN 101079238 A CN101079238 A CN 101079238A CN 200610085055 CN200610085055 CN 200610085055 CN 200610085055 A CN200610085055 A CN 200610085055A CN 101079238 A CN101079238 A CN 101079238A
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Abstract
The invention discloses a hand-held electronic device and aphototropism brightness adjusting method, which comprises the following parts: display unit, reserving unit, image picking unit, processing unit and aphototropism driver, wherein the reserving unit stores aphototropism parameter list; the image picking unit picks the image; the processing unit generates aphototropism parameter in the aphototropism parameter list according to the exposure corresponding to image, which is set according to the aphototropism brightness output by aphototropism parameter; the aphototropism driver sets the display unit to preset aphototropism brightness.
Description
Technical field
The present invention relates to a kind of portable electric device, and be particularly related to a kind of portable electric device and backlight brightness regulation method thereof of automatic adjustment backlight illumination.
Background technology
Please refer to Fig. 1, it shows the synoptic diagram of traditional mobile phone.Tradition mobile phone 10 comprises screen 110 and key groups 120.When user's desire changes the backlight illumination of screen 110, need be introduced into mobile phone and set picture, see through the backlight illumination size of key groups 120 again with manual type self-setting screen 110.
When the backlight illumination of screen 110 is crossed when low, the user often can't see the shown image content of screen 110 clearly.Therefore, the user need heighten the backlight illumination of screen 110 voluntarily, to know the display frame content.
Yet, with the backlight illumination of manual type setting screen time and effort consuming not only, and when the backlight illumination of screen is big more, represent the power consumption of screen big more, will reduce the stand-by time of mobile phone relatively.
Summary of the invention
In view of this, purpose of the present invention is exactly that a kind of portable electric device and backlight brightness regulation method thereof of adjusting backlight illumination with the environment light and shade automatically is being provided.The image that portable electric device is captured according to the capturing images unit is automatically adjusted the backlight illumination of display unit, to save power consumption and to increase stand-by time.
According to purpose of the present invention, a kind of portable electric device is proposed.Portable electric device comprises display unit, storage unit, capturing images unit, processing unit and backlight driver.Storage unit is in order to storage backlighting parameters table, and the capturing images unit is in order to the acquisition image.
Processing unit according to the exposure of image calculation correspondence with obtain with the backlighting parameters table in corresponding backlighting parameters, and set according to backlighting parameters output backlight illumination.And backlight driver reaches predetermined backlight illumination in order to set the adjustment display unit according to backlight illumination.
According to another object of the present invention, a kind of backlight brightness regulation method of portable electric device is proposed.Portable electric device comprises processing unit and display unit.
And backlight driving method comprises the steps: at first, loads the backlighting parameters table to processing unit.Then, acquisition image.And then, according to the exposure of image calculation correspondence with obtain with the backlighting parameters table in corresponding backlighting parameters.At last, set the adjustment display unit according to backlighting parameters output backlight illumination and reach predetermined backlight illumination.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and conjunction with figs. are described in detail below.
Description of drawings
Fig. 1 shows the synoptic diagram of traditional mobile phone.
Fig. 2 shows the calcspar according to a kind of portable electric device of a preferred embodiment of the present invention.
Fig. 3 shows the synoptic diagram of backlighting parameters table.
Fig. 4 shows the process flow diagram according to a kind of backlight brightness regulation method of a preferred embodiment of the present invention.
The reference numeral explanation
10: traditional mobile phone
20: portable electric device
110: screen
120: key groups
210: display unit
220: backlight driver
230: the capturing images unit
232: the capturing images assembly
234: the automatic exposure controller
236: automatic gain controller
240: processing unit
242: counter
250: storage unit
Embodiment
Generally speaking, the electric power of portable electric device mostly is display unit and consumes.Therefore, the backlight illumination of display unit can not only be saved the power consumption of portable electric device if can adjust automatically with the environment light and shade, more can improve the comfort level that the user watches picture.
Please refer to Fig. 2, it shows the calcspar according to a kind of portable electric device of a preferred embodiment of the present invention.Portable electric device 20 for example is mobile phone or personal digital assistant (PersonalDigital Assistant, PDA), and portable electric device 20 comprise display unit 210, backlight driver 220, capturing images unit 230, processing unit 240 and storage unit 250.
The capturing images unit 230 of portable electric device 20 for example is the CMOS camera model, and capturing images unit 230 comprises capturing images assembly 232, automatic exposure controller 234 and automatic gain controller 234.After the automatic adjustment backlight illumination function of portable electric device 20 is activated, portable electric device 20 is an initialisation image acquisition unit 230, for example set image resolution ratio (Resolution) and sampling rate (Frame Rate), and enable automatic exposure controller 234 and automatic gain controller 234.
For instance, when environment light source was dark, automatic exposure controller 234 promptly automatically increased the time shutter (Exposure Line) with environment light source, to improve picture brightness.And automatic gain controller 234 also automatically changes yield value (Gain) with environment light source, to improve picture quality.
Otherwise when environment light source is brighter, automatic exposure controller 234 will automatically reduce the time shutter with environment light source, and automatic gain controller 234 is also automatically adjusted yield value with environment light source.Therefore, portable electric device 20 can be judged the light and shade of environment light source accordingly according to time shutter and yield value size, and then adjusts the backlight illumination of display unit 210.
In addition, after the automatic adjustment backlight illumination function of portable electric device 20 is activated, portable electric device 20 also loads backlighting parameters table 252 to processing unit 240 in storage unit 250, processing unit 240 for example be multimedia application processor (Multi Media Processor, MMP).
Processing unit 240 is according to the exposure of time shutter and yield value computed image, and selects corresponding backlighting parameters in backlighting parameters table 252, is set to backlight driver 220 with the output backlight illumination, adjusts display unit 210 and reaches predetermined backlight illumination.
Please refer to Fig. 3, it shows the synoptic diagram of backlighting parameters table.Because the light and shade difference of environment light source will influence the size of the exposure of image, therefore, each backlighting parameters in the backlighting parameters table 252 all corresponds to different illumination and exposure.When processing unit 240 was set control backlight driver 220 according to the backlighting parameters output backlight illumination of backlighting parameters table 252, display unit 210 promptly automatically reached predetermined backlight illumination with the light and shade of environment light source.
The size of backlighting parameters table 252 is looked closely the setting range of backlight illumination.For example, if the setting range of backlight illumination is 0%, 1%～100%, then backlighting parameters table 252 has 101 backlighting parameters.Processing unit 240 is selected the backlighting parameters corresponding with it according to the exposure of image in backlighting parameters table 252, adjust display unit 210 with correspondence and reach predetermined backlight illumination.
For instance, when the illumination (illuminance) of environment light source was 1 lux (lux), it was 100000 that processing unit 240 calculates exposure according to time shutter of image and yield value, and the corresponding backlighting parameters 30% of selection and exposure 100000.Processing unit 240 is set the backlight illumination that control backlight driver 220 is adjusted display unit 210 according to backlighting parameters 30% output backlight illumination.
When the illumination of environment light source is changed into 10 luxs, time shutter and yield value promptly change with environment light source, processing unit 240 changes into 80000 according to the exposure that time shutter and yield value calculate image, and the corresponding backlighting parameters 35% of selection and exposure 80000.Processing unit 240 is set the backlight illumination of adjusting display unit 210 according to backlighting parameters 35% another backlight illumination of output.
Hence one can see that, and the backlight illumination of display unit 210 is automatically to adjust with the environment light source light and shade, better display quality to be provided and to reduce the power consumption of portable electric device 20.
In addition, too fast for fear of the renewal frequency of backlight illumination, cause flashing of picture easily.Processing unit 240 more comprises a counter 242 (as shown in Figure 2), and counter 242 for example is to realize with software or hardware, and counter 242 exports the image number of processing unit 240 to as acquisition unit 230 in order to counting diagram.When counter 242 counted up to a higher limit, processing unit 240 output backlight illuminations were set to backlight driver 220, made that backlight driver 220 is every to reach predetermined backlight illumination through a schedule time according to backlight illumination setting cycle ground adjustment display unit 210.And the schedule time for example is 1 to 2 second.
After the backlighting parameters of processing unit 240 in selecting backlighting parameters table 252, be that it is stored in an array, and when counter 242 counted up to a higher limit, according to the mean value of all backlighting parameters in the array, the output backlight illumination was set to backlight driver 220 to processing unit 240 again.
Perhaps, processing unit 240 is set to backlight driver 220 according to the distribution trend of backlighting parameters in the array with the output backlight illumination, allows display unit 210 reach predetermined backlight illumination.
Please refer to Fig. 4, it shows the process flow diagram according to a kind of backlight brightness regulation method of a preferred embodiment of the present invention.Backlight brightness regulation method is to be used for above-mentioned portable electric device 20, and backlight brightness regulation method comprises the steps:
At first as described in the step 410, portable electric device 20 loads backlighting parameters table 252 to processing unit 240 from storage unit.In addition, portable electric device 20 also enables automatic exposure controller 234 and automatic gain controller 234, and sets image resolution ratio and sampling rate.
Then as described in the step 420, the counting of counter 242 is made zero, and utilize capturing images unit 230 acquisition images.
And then as described in the step 430, after the image that is captured when capturing images unit 230 is ready for, processing unit 240 according to time shutter of image and yield value and calculation exposure amount with obtain with backlighting parameters table 252 in corresponding backlighting parameters.Processing unit 240 and this backlighting parameters is stored to an array after, the counting of counter 242 is added one.
At last as described in the step 440, processing unit 240 judges whether counter 242 countings reach a higher limit, if counter 242 countings reach this higher limit, processing unit 240 is set to backlight driver 220 according to the output of the backlighting parameters in array backlight illumination, reaches predetermined backlight illumination to adjust display unit 210.
The portable electric device and the backlight brightness regulation method thereof of the disclosed automatic adjustment backlight illumination of the above embodiment of the present invention, the corresponding backlight illumination of adjusting display unit of the image that is captured according to the capturing images unit, can not only improve the comfort level that the user watches screen, more effectively reduce the power consumption of portable electric device, and then improve the stand-by time of portable electric device.
In addition, along with consumer's user demand, the capturing images unit gradually is the standard outfit of portable electric device now, therefore, manufacturer does not need additionally to purchase light source sensor, saves the space of portable electric device on the one hand, more avoids the raising of spare part cost on the other hand.
In sum, though the present invention discloses as above with a preferred embodiment, so it is not in order to limit the present invention.The persond having ordinary knowledge in the technical field of the present invention, without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.Therefore, protection scope of the present invention is as the criterion when looking accompanying the claim person of defining.
Claims (18)
1. portable electric device comprises:
One display unit;
One storage unit is in order to store a backlighting parameters table;
One capturing images unit is in order to capture one first image;
One processing unit, according to one first exposure of this first image calculation correspondence with obtain with this backlighting parameters table in corresponding one first backlighting parameters, and export a backlight illumination according to this first backlighting parameters at least and set; And
One backlight driver reaches a predetermined backlight illumination in order to set this display unit of adjustment according to this backlight illumination.
2. portable electric device as claimed in claim 1, wherein, this capturing images unit comprises:
One capturing images assembly is in order to capture this first image;
One automatic exposure controller is in order to automatically to adjust a time shutter of this first image of acquisition with the environment light and shade; And
One automatic gain controller is in order to automatically to adjust a yield value of this first image of acquisition with the environment light and shade;
Wherein, this processing unit is to calculate this first exposure according to this time shutter and this yield value.
3. portable electric device as claimed in claim 1, wherein, this processing unit more according to one second exposure of one second image calculation correspondence of this capturing images unit acquisition with obtain with this backlighting parameters table in corresponding one second backlighting parameters, and export this backlight illumination by this first backlighting parameters and this second backlighting parameters and set.
4. portable electric device as claimed in claim 3, wherein, this first backlighting parameters and this second backlighting parameters are stored to an array.
5. portable electric device as claimed in claim 4, wherein, this processing unit calculates this first backlighting parameters in this array and the mean value of this second backlighting parameters, sets to export this backlight illumination.
6. portable electric device as claimed in claim 4, wherein, this processing unit is set to export this backlight illumination according to this first backlighting parameters in this array and the distribution trend of this second backlighting parameters.
7. portable electric device as claimed in claim 1, wherein, this backlight driver is every to reach this predetermined backlight illumination through a schedule time according to this backlight illumination setting cycle ground this display unit of adjustment.
8. portable electric device as claimed in claim 1, wherein, this portable electric device is a mobile phone.
9. portable electric device as claimed in claim 1, wherein, this portable electric device is a personal digital assistant.
10. the backlight brightness regulation method of a portable electric device, this portable electric device comprises a processing unit and a display unit, this backlight driving method comprises:
Load a backlighting parameters table to this processing unit;
Capture one first image;
According to one first exposure of this first image calculation correspondence with obtain with this backlighting parameters table in corresponding one first backlighting parameters; And
Exporting a backlight illumination according to this first backlighting parameters at least sets and adjusts this display unit and reach a predetermined backlight illumination.
11. backlight brightness regulation method as claimed in claim 10, wherein, this first exposure is according to time shutter of this first image and a yield value and get, and this time shutter and this yield value are adjusted automatically with the environment light and shade.
12. backlight brightness regulation method as claimed in claim 10 more comprises:
Capture one second image;
According to one second exposure of this second image calculation correspondence with obtain with this backlighting parameters table in corresponding one second backlighting parameters; And
Exporting this backlight illumination by this first backlighting parameters and this second backlighting parameters sets.
13. backlight brightness regulation method as claimed in claim 10 more comprises:
Store this first backlighting parameters and this second backlighting parameters to an array.
14. backlight brightness regulation method as claimed in claim 13, wherein, this processing unit calculates this first backlighting parameters in this array and the mean value of this second backlighting parameters, sets to export this backlight illumination.
15. backlight brightness regulation method as claimed in claim 13, wherein, this processing unit is set to export this backlight illumination according to this first backlighting parameters in this array and the distribution trend of this second backlighting parameters.
16. backlight brightness regulation method as claimed in claim 10, wherein, this portable electric device is every to reach this predetermined backlight illumination through a schedule time according to this backlight illumination setting cycle ground this display unit of adjustment.
17. backlight brightness regulation method as claimed in claim 10, wherein, this portable electric device is a mobile phone.
18. backlight brightness regulation method as claimed in claim 10, wherein, this portable electric device is a personal digital assistant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610085055 CN101079238A (en) | 2006-05-22 | 2006-05-22 | Hand-held electronic device for automatically regulating backlight brightness and backlight brightness regulation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610085055 CN101079238A (en) | 2006-05-22 | 2006-05-22 | Hand-held electronic device for automatically regulating backlight brightness and backlight brightness regulation method |
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| CN101079238A true CN101079238A (en) | 2007-11-28 |
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| CN 200610085055 Pending CN101079238A (en) | 2006-05-22 | 2006-05-22 | Hand-held electronic device for automatically regulating backlight brightness and backlight brightness regulation method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101471035B (en) * | 2007-12-27 | 2010-08-18 | Tcl集团股份有限公司 | Backlight control method and apparatus and panel display equipment |
| CN101546532B (en) * | 2008-03-26 | 2012-07-18 | 群康科技(深圳)有限公司 | Automatic regulating device and automatic regulating method for liquid crystal display luminance |
| CN102103829B (en) * | 2009-12-17 | 2013-06-05 | 鸿富锦精密工业（深圳）有限公司 | Electrophoretic display device and method for correcting screen thereof |
| CN103377621A (en) * | 2012-04-18 | 2013-10-30 | 浩鑫股份有限公司 | Backlight adjusting system and backlight adjusting method |
| CN104601808A (en) * | 2014-12-30 | 2015-05-06 | 西安乾易企业管理咨询有限公司 | Method for automatically adjusting screen luminance by detecting environment light through mobile phone camera |
| CN105825835A (en) * | 2015-07-29 | 2016-08-03 | 维沃移动通信有限公司 | Method for adjusting display brightness of electronic device and electronic device |
| CN106847150A (en) * | 2017-01-04 | 2017-06-13 | 捷开通讯(深圳)有限公司 | Adjust the device and method of brightness of display screen |
| CN106981273A (en) * | 2017-06-01 | 2017-07-25 | 青岛海信电器股份有限公司 | Backlight brightness control devices, image display device |
| CN112863450A (en) * | 2019-11-26 | 2021-05-28 | 奇景光电股份有限公司 | Backlight control device |
| CN113035144A (en) * | 2019-12-25 | 2021-06-25 | Oppo广东移动通信有限公司 | Method and device for adjusting display parameters, mobile terminal and storage medium |
-
2006
- 2006-05-22 CN CN 200610085055 patent/CN101079238A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101471035B (en) * | 2007-12-27 | 2010-08-18 | Tcl集团股份有限公司 | Backlight control method and apparatus and panel display equipment |
| CN101546532B (en) * | 2008-03-26 | 2012-07-18 | 群康科技(深圳)有限公司 | Automatic regulating device and automatic regulating method for liquid crystal display luminance |
| CN102103829B (en) * | 2009-12-17 | 2013-06-05 | 鸿富锦精密工业（深圳）有限公司 | Electrophoretic display device and method for correcting screen thereof |
| CN103377621A (en) * | 2012-04-18 | 2013-10-30 | 浩鑫股份有限公司 | Backlight adjusting system and backlight adjusting method |
| CN103377621B (en) * | 2012-04-18 | 2016-08-17 | 浩鑫股份有限公司 | Back light adjusting system and method |
| CN104601808A (en) * | 2014-12-30 | 2015-05-06 | 西安乾易企业管理咨询有限公司 | Method for automatically adjusting screen luminance by detecting environment light through mobile phone camera |
| CN105825835A (en) * | 2015-07-29 | 2016-08-03 | 维沃移动通信有限公司 | Method for adjusting display brightness of electronic device and electronic device |
| CN105825835B (en) * | 2015-07-29 | 2018-06-26 | 维沃移动通信有限公司 | A kind of method and electronic equipment for adjusting electronic equipment display brightness |
| CN106847150A (en) * | 2017-01-04 | 2017-06-13 | 捷开通讯(深圳)有限公司 | Adjust the device and method of brightness of display screen |
| CN106981273A (en) * | 2017-06-01 | 2017-07-25 | 青岛海信电器股份有限公司 | Backlight brightness control devices, image display device |
| CN112863450A (en) * | 2019-11-26 | 2021-05-28 | 奇景光电股份有限公司 | Backlight control device |
| CN113035144A (en) * | 2019-12-25 | 2021-06-25 | Oppo广东移动通信有限公司 | Method and device for adjusting display parameters, mobile terminal and storage medium |
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