CN101350170A - Energy-saving method, apparatus and electronic device - Google Patents
Energy-saving method, apparatus and electronic device Download PDFInfo
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- CN101350170A CN101350170A CNA2008101420334A CN200810142033A CN101350170A CN 101350170 A CN101350170 A CN 101350170A CN A2008101420334 A CNA2008101420334 A CN A2008101420334A CN 200810142033 A CN200810142033 A CN 200810142033A CN 101350170 A CN101350170 A CN 101350170A
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Abstract
The example of the invention provides an energy saving method and a device, a color depth value of a showed picture is analyzed through determining a showed picture, working current of a backlight of a display screen is regulated according to the color depth value which is analyzed, the consumption of power can be effectively reduced, thereby achieving the purpose of saving energy. The example of the invention further provides an electronic device which comprises the energy saving device.
Description
Technical field
The embodiment of the invention relates to electronic technology field, especially a kind of power-economizing method of electronic equipment and energy saver.
Background technology
Continuous development along with consumer electronics, portable electric appts is mobile phone for example, the display screen of PDA, notebook computer etc. constantly increases, power consumption is also corresponding constantly to be increased, with the LCD display is example, the ratio that its power consumption accounts for the equipment total power consumption has reached a higher degree, thereby causes the corresponding shortening of battery duration of portable electric appts.In actual applications, to LCD display, adopt LED (light emitting diode) usually as backlight.
The inventor is when analyzing existing technical scheme, find that LED is under continuous current control, its brightness can not change in the LCD procedure for displaying, promptly remain at same brightness, (this moment, LCD display frame brightness was lower when LCD content displayed color depth is dark like this, corresponding color depth value is less) time, if LED brightness is higher, will causes electric energy to be not intended to the free burial ground for the destitute and expend.
Summary of the invention
The embodiment of the invention is to provide a kind of power-economizing method and device, can effectively reduce the power consumption of display screen.
The embodiment of the invention provides a kind of power-economizing method, comprising: determine picture to be shown; Analyze the color depth value of described picture to be shown; Regulate the working current in display backlight source according to the described color depth value that analyzes.
The embodiment of the invention provides a kind of energy saver, comprising: determining unit is used for determining picture to be shown; The color depth analytic unit is used to analyze the color depth value of described picture to be shown; Regulon, the color depth value that is used for analyzing according to described color depth analytic unit is regulated the working current in display backlight source.
The embodiment of the invention also provides a kind of electronic equipment, comprises above-mentioned energy saver.
The embodiment of the invention is by determining the color depth value of picture to be shown, and working current that can the dynamic adjustments backlight reduces the consumption of electric power, thereby reaches purpose of energy saving.
Description of drawings
The power-economizing method process flow diagram that Fig. 1 provides for one embodiment of the invention.
The method flow diagram of the analysis color depth value that Fig. 2 provides for one embodiment of the invention.
The energy saver block diagram that Fig. 3 provides for one embodiment of the invention.
Fig. 4 is the block diagram of color depth analytic unit among Fig. 3.
Embodiment
For convenience of description, with the LCD display example to display screen in the present embodiment, be that example describes with LED to backlight, those skilled in the art are not difficult to understand, and this can't cause restriction to protection domain of the present invention for example.The LCD driver module is in the process that LCD lights, usually the way that adopts is to carry continuous current to LED, promptly allow maintenance backlight constant, and in fact, the LCD picture displayed may change, with the broadcast short films is example, the picture that LCD plays is in continuous variation, wherein a lot of pictures may have darker color depth (being that the color depth value is less), in this case, most of meeting backlight is absorbed by picture, makes backlight roles such as picture color, brightness to be descended to a great extent.Therefore, before the output picture data, analyze the color depth value of picture earlier,, can avoid meaningless waste of energy, reach the prolongation equipment purpose of service time according to the current picture displayed color depth value dynamic adjustments LED electric current of wanting.
Below in conjunction with accompanying drawing the embodiment of the invention is specified.
See also Fig. 1, the power-economizing method process flow diagram that Fig. 1 provides for one embodiment of the invention.
In step 102, determine picture to be shown on LCD display.
With the broadcast short films is example, because picture is constantly changing, needs constantly to determine to be about in the short-movie picture displayed; Perhaps when browsing pictures, also need to determine picture to be shown.
Particularly, determine that picture to be shown on LCD display can select to be finished by driver module.
In step 104, treat the color depth value of display frame and analyze.
The purpose that picture color depth value is analyzed is to determine power backlight influence to picture, thereby helps need to determine whether adjustment backlight, to reduce the consumption of backlight to electric power.
For a pixel, be that the color depth value of red, green, blue three looks is (255,255 at three primary colors, 255) time, promptly the rgb value of this pixel is (255,255,255) time, this pixel is a pure white, is (0 in the color depth value of red, green, blue three looks, 0,0) time, this pixel is an ater, and usually, it is the darkest that black is considered to color depth, and it is the most shallow that white is considered to color depth, that is to say that the depth of color depth and the size of color depth value become the opposite direction relationship change.Analyze picture color depth value and both can adopt the image software of some third parties' exploitations to finish, the also method that can adopt present embodiment to provide, specifically as shown in Figure 2, the method for the analysis color depth value that present embodiment provides comprises:
When the color depth value of each pixel of statistics, need calculate the three primary colors color depth value of this pixel, suppose that R is the Red color depth value of pixel, G is the Green color depth value of pixel, B is the Blue color depth value of pixel, consider that three primary colors produce the receptivity difference of spectrum to backlight, further the color depth value of RGB is done balance, obtain an initial color depth value, because screen edge is less to visual impact, and the central area is bigger to vision imaging, thereby further comes initial color depth value is revised computing according to this pixel present position, obtains the color depth value of each pixel.
After obtaining the color depth value of each pixel, calculate average color depth value according to the color depth value of each pixel and the number of pixel, for example can take to ask the mode of arithmetic mean, promptly after the color depth value addition of all pixels again divided by the number of pixel, obtain a mean value, with the color depth value of this mean value as picture to be shown.
Preferably, when considering practical application, some special region may appear in the picture, for example may picture brightness higher in the local area, to this, present embodiment can also be selected further execution in step 206, in conjunction with the area of special area, the color depth value of special area pixel the average color depth value that calculates in the step 204 is revised, with the color depth value of revised color depth value as described picture to be shown.
Please continue to consult Fig. 1, in step 106, regulate the working current of backlight according to the color depth value of picture to be shown.
When picture had darker color depth (the color depth value is lower), greatly meeting backlight was absorbed by picture, backlightly also can descend to roles such as picture color, brightness.Particularly, when adjusting the working current of backlight, if the color depth of picture to be shown reduces the working current in display backlight source than increasing (the color depth value reduces) last time; If the color depth of picture to be shown then increases the working current in display backlight source than reducing (increase of color depth value) last time.
In the present embodiment, when adjusting the working current in display backlight source, need carry out according to the color depth value of picture to be shown, calculate the color depth value of described picture to be shown and the funtcional relationship between the pure white picture color depth value earlier, adjust the working current in display backlight source again, make to meet described funtcional relationship between the back light source brightness of the described picture correspondence to be shown back light source brightness corresponding with the pure white picture.Ratio relation between color depth value that for example described function can be a picture to be shown and the pure white picture color depth value.
For expressing conveniently, the back light source brightness of the full frame pure white picture correspondence of supposition is 10 (back light source brightness is the highest, working current is maximal value) below, and the back light source brightness of the picture correspondence of full frame black is 0 (backlight is closed, working current be 0).Treat that with one picture is an example, after the method for the analysis color depth value that the employing present embodiment provides is analyzed, if the ratio between the color depth value of this picture to be shown and the pure white picture color depth value is about 55%, when exporting this picture to display screen and show, can be by adjusting the mode of backlight working current, 55% brightness when being pure white with the brightness regulation of backlight, in the case, can effectively save power consumption, and can not cause the obvious deepening of picture.
The method that the embodiment of the invention provides is applicable to that having backlight for example adopts the display screen of LED as backlight, it preferably can be LCD display, under to the less situation of picture display effect influence, can reduce the consumption of electric power effectively, thereby reach purpose of energy saving.
See also Fig. 3, the energy saver block diagram that Fig. 3 provides for one embodiment of the invention.
Energy saver comprises in the present embodiment: determining unit 32, color depth analytic unit 34 and regulon 36.
Wherein determining unit 32 is used for determining picture to be shown.
Color depth analytic unit 34 is used to analyze the color depth value of described picture to be shown, and analysis result is offered regulon 36.
The color depth value that regulon 36 is used for analyzing according to described color depth analytic unit 34 is regulated the working current in display backlight source.If the color depth value of picture to be shown is than increasing last time, regulon 36 increases the working current in display backlight source; If the color depth value of picture to be shown is than reducing last time, then regulon 36 reduces the working current in display backlight source.
In addition, described energy saver can further include: output unit 38, be used for after color depth analytic unit 34 analyzes the color depth value of described picture to be shown, and should picture to be shown export on the display screen and show.
When specific implementation, described energy saver can be the driver module of display screen.
See also shown in Figure 4ly, Fig. 4 is the block diagram of color depth analytic unit 34 among Fig. 3.Color depth analytic unit 34 specifically comprises in the present embodiment: statistical module 342 and computing module 344.
Wherein, statistical module 342 is used for adding up the color depth value of each pixel of picture to be shown.Computing module 344 is used for calculating average color depth value according to the number of the color depth value of described each pixel and pixel.
Further, color depth analytic unit 34 can also comprise correcting module 346, is used for the average color depth value that described computing module 342 calculates is revised.
The embodiment of the invention is by determining the color depth value of picture to be shown, and working current that can the dynamic adjustments backlight reduces the consumption of electric power, thereby reaches purpose of energy saving.
The embodiment of the invention also further provides a kind of electronic equipment, and this electronic equipment comprises above-mentioned energy saver, and this electronic equipment can be mobile phone, PDA, also can be notebook computer etc. other have the electronic product of display screen and backlight.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of programmed instruction, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (11)
1, a kind of power-economizing method is characterized in that, comprising:
Determine picture to be shown;
Analyze the color depth value of described picture to be shown;
Regulate the working current in display backlight source according to the described color depth value that analyzes.
2, method according to claim 1 is characterized in that, the working current of regulating the display backlight source according to described color depth value specifically comprises:
When the color depth value of picture to be shown increases, increase the working current in display backlight source; And/or
When the color depth value of picture to be shown reduces, reduce the working current in display backlight source.
3, method according to claim 1 is characterized in that, the working current of regulating the display backlight source according to described color depth value specifically comprises:
Calculate the color depth value of described picture to be shown and the funtcional relationship between the pure white picture color depth value;
Adjust the working current in display backlight source, make to meet described funtcional relationship between the back light source brightness of the described picture correspondence to be shown back light source brightness corresponding with the pure white picture.
4, according to claim 1 or 2 or 3 described methods, it is characterized in that, after the color depth value of the described picture to be shown of described analysis, also comprise:
Should picture to be shown export on the display screen and show.
5, method according to claim 1 is characterized in that, the color depth value of the described picture to be shown of described analysis comprises:
Each pixel to described picture to be shown is added up, and obtains the color depth value of each pixel;
Calculate average color depth value according to the color depth value of each pixel and the number of pixel, as the color depth value of described picture to be shown.
6, method according to claim 5 is characterized in that, also comprises:
Described average color depth value is revised, with the color depth value of revised color depth value as described picture to be shown.
7, a kind of energy saver is characterized in that, comprising:
Determining unit is used for determining picture to be shown;
The color depth analytic unit is used to analyze the color depth value of described picture to be shown;
Regulon, the color depth value that is used for analyzing according to described color depth value analytic unit is regulated the working current in display backlight source.
8, energy saver according to claim 7 is characterized in that, also comprises:
Output unit is used for after described color depth analytic unit analyzes the color depth value, should picture to be shown exports on the display screen to show.
According to claim 7 or 8 described energy savers, it is characterized in that 9, described color depth analytic unit comprises:
Statistical module, the color depth value that is used to add up each pixel;
Computing module is used for calculating average color depth value according to the color depth value of described each pixel and the number of pixel.
10, energy saver according to claim 9 is characterized in that, described color depth analytic unit also comprises:
Correcting module is used for the average color depth value that described computing module calculates is revised.
11, a kind of electronic equipment is characterized in that, comprises any described energy saver in the claim 6 to 10.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008101420334A CN101350170A (en) | 2008-08-25 | 2008-08-25 | Energy-saving method, apparatus and electronic device |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008101420334A CN101350170A (en) | 2008-08-25 | 2008-08-25 | Energy-saving method, apparatus and electronic device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103035210A (en) * | 2013-01-15 | 2013-04-10 | 惠州Tcl移动通信有限公司 | Screen visual expansion method and screen visual expansion system for mobile terminal |
| CN105513546A (en) * | 2016-03-02 | 2016-04-20 | 京东方科技集团股份有限公司 | Backlight adjustment method and device and display device |
| CN106782347A (en) * | 2016-12-30 | 2017-05-31 | 深圳众思科技有限公司 | Correct the method and device of LED backlight display white point |
| CN110164385A (en) * | 2019-05-31 | 2019-08-23 | 厦门天马微电子有限公司 | A kind of adjusting method of back light source brightness |
-
2008
- 2008-08-25 CN CNA2008101420334A patent/CN101350170A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103035210A (en) * | 2013-01-15 | 2013-04-10 | 惠州Tcl移动通信有限公司 | Screen visual expansion method and screen visual expansion system for mobile terminal |
| CN103035210B (en) * | 2013-01-15 | 2015-07-29 | 惠州Tcl移动通信有限公司 | The screen-vision screen extended method of mobile terminal and system |
| CN105513546A (en) * | 2016-03-02 | 2016-04-20 | 京东方科技集团股份有限公司 | Backlight adjustment method and device and display device |
| CN105513546B (en) * | 2016-03-02 | 2018-09-11 | 京东方科技集团股份有限公司 | backlight adjusting method and device, display device |
| US10276108B2 (en) | 2016-03-02 | 2019-04-30 | Boe Technology Group Co., Ltd | Methods for adjusting backlight brightness levels, related backlight adjusting device, and related display device |
| CN106782347A (en) * | 2016-12-30 | 2017-05-31 | 深圳众思科技有限公司 | Correct the method and device of LED backlight display white point |
| CN110164385A (en) * | 2019-05-31 | 2019-08-23 | 厦门天马微电子有限公司 | A kind of adjusting method of back light source brightness |
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Open date: 20090121 |