CN1519623A - Device and method capable of adjusting brightness of backlight in display - Google Patents
Device and method capable of adjusting brightness of backlight in display Download PDFInfo
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- CN1519623A CN1519623A CNA03100573XA CN03100573A CN1519623A CN 1519623 A CN1519623 A CN 1519623A CN A03100573X A CNA03100573X A CN A03100573XA CN 03100573 A CN03100573 A CN 03100573A CN 1519623 A CN1519623 A CN 1519623A
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Abstract
The device and method are applicable to electronic communication devices having display in order to reduce power consumption when electronic communication devices carry out operation of displaying information. The device includes light sensing module and backlight-controlling module. When user operates the electronic communication device, CPU in the device sends signal to light sensing module instantly. Light sensing module senses brightness of light source outside the device, and returns result back for CUP to make determination. Then, CPU inputs determined result to the backlight-controlling module. Based on state of light source outside the device, the backlight-controlling module adjusts mode for outputting backlight of display automatically in order to reduce power consumption.
Description
Technical field
The invention relates to a kind of power management techniques, particularly about a kind of on electronics, the device and method that the power consumption of display in the information procedure for displaying is controlled.
Background technology
In recent years, because the development of electronics and communication science and technology, impel the electronics that has a menu display function as PDA(Personal Digital Assistant), digital camera, notebook (Note Book), mobile phone and the networking telephone (IP-Phone) etc. all to develop rapidly.Therefore, each tame product manufacturer has all dropped into considerable manpower and materials in the research and development of product and improvement, and expectation can be released the product that accords with the demands of the market, and makes every effort to obtain leading superiority in dog-eat-dog, the selling market that changes all the time.
At present, can prolong the standby and the running time of product, it is the project that each tame manufacturer actively drops into research and development, and, characteristics (Mobile) that the electronics with menu display function of Tui Chuing must have on the market " moving " could occupy a tiny space on the consumption market, as mobile voice, mobile video, mobile office or the like noun, become each manufacturer carry out Product Marketing through common-use words, wish to rely on the portable characteristics of product to obtain consumer's favor.
At present, the electronics (as digital camera, personal digital assistant, hand held TV and the networking telephone etc.) of general tool menu display function on the consumption market, the greatest problem that faces is further reduced volume and reduces power consumption, if the power of electronics itself is very big, can accelerate consumption of electric.
Therefore, must improve, to reduce the power consumption of product to the reason that influences electric quantity consumption.All use colour liquid crystal display device (Liquid Crystal Display owing to have the electronics of menu display function; LCD) as picture display device, to satisfy the psychology that the user follows the fashion, this has also accelerated consumption of electric.LCD is that electronics carries out the output interface that information shows, must clearly illustrate information, does the subsequent operation action for the user.Generally speaking, in a single day the power supply of most of LCD is opened, no matter whether be in operator scheme, its display frame all is in opening, the user can browse the information on the picture at any time, and this is quite convenient really to the user, but with regard to electronics itself, not only increase consumption of electric, also reduced the serviceable life of LCD.Therefore; someone proposes to utilize screen protection program to address this problem; in the time that the user is setting; when electronics not being carried out any operation; electronics promptly switches to the screen protection program picture to the picture of LCD, to reduce the screen of electric quantity consumption, protection LCD.
Though above-mentioned method can be slowed down the electric weight that LCD consumes, still, this method only after arriving the set time, is just brought into play the function of economize on electricity, and at other times, electronics still will consume a large amount of electric weight.And no matter how the external light source environment changes, electronics is all with same output mode display message on screen, there is not a kind of output mode can be fit to light-source brightness under any environment, when reality is used, the user will be according to light source on every side and individual's subjective feeling, brightness to LCD backlight is adjusted, and makes display frame more clear.The problem that the power consumption of present LCD has still exists, and how to find a better method to address the above problem, and is the current problem that presses for solution.
Summary of the invention
In order to solve the shortcoming that above-mentioned prior art exists, fundamental purpose of the present invention is to provide a kind of device and method of adjusting display backlight brightness, be applicable to the electronics that has CPU (central processing unit) and display, this electronics can pass through operation-interface, carries out the data input operation.The present invention can reduce the power consumption of this electronics in the information procedure for displaying.
The device of adjusting display backlight brightness of the present invention comprises following modules: optical sensing module, in order in the electronics operating environment of living in, the bull bear position of light source converts electronic signal to, sends CPU (central processing unit) to, puts in order and judges operation; Backlight control module is used for the result according to the light source bull bear position, automatically the backlight illumination of display is adjusted, and reduces the electric weight that display consumes in the information procedure for displaying, also can prolong the serviceable life of display because of the reduction of consumes power.
The method of adjusting display backlight brightness of the present invention comprises following program: when (1) is in standby mode (Standby mode) when the operating state of electronics, CPU (central processing unit) is surveyed the operating position of its operation-interface, whether differentiate the user at input data, if not, proceed to step (2), if then directly proceed to step (3); (2) have or not the incoming call signal to survey by CPU (central processing unit) to electronics,, proceed to step (3),, directly proceed to step (4) if do not have if having; (3) by CPU (central processing unit) display being counted the opening time backlight in the information output procedure sets, and signal level (Level) state that optical sensing module is exported differentiated, adjust the foundation of output mode backlight automatically as backlight control module; (4) by CPU (central processing unit) whether electronics is in operator scheme and differentiates, if, proceed to step (5), if not, step (1) then returned; (5) the accurate position of on display, adjusting according to backlight control module, show the related data that the user imports and will export by operational module, subsequently, survey the user by CPU (central processing unit) and whether continue to use other operation-interface, if, return step (3), if not, then carry out step (6); (6) differentiate gate time by CPU (central processing unit) and whether stop timing, if, close the output backlight of display, and return step (1) again, if not, then return step (5), continue the operating position of operation-interface is surveyed.
In sum, the device and method of adjusting display backlight brightness of the present invention, can be according to the various light source conditions in the external world, in the information output procedure, automatically the output brightness backlight of display is adjusted, to reduce the power consumption of display in the information procedure for displaying, reach the purpose of economize on electricity.
Description of drawings
Fig. 1 is the framework block schematic diagram, has shown the device and method of adjusting display backlight brightness of the present invention in the networking telephone, the type of attachment between each functional module.
Fig. 2 is a networking telephone sterogram, has shown the practical application form of the partial function module in the framework block schematic diagram of Fig. 1.
Fig. 3 (A) to Fig. 3 (B) be process flow diagram, shown the networking telephone of the present invention in information output shows, the implementation procedure of electric energy control operation.
Embodiment
Embodiment
In the following embodiment, the device and method of adjusting display backlight brightness of the present invention is applied on the networking telephone, automatically adjust the brightness of the background light source of its display, make the networking telephone reduce power consumption, yet it should be noted that the device and method of adjusting display backlight brightness of the present invention is not limited to be applied on the networking telephone; In the broadest sense, the present invention is applicable to any central processor unit that has, to the input Data Processing after on the electronics that shows on the display, be specially adapted to have the electronics of LCD, as digital camera, personal digital assistant, mobile phone etc., automatically adjust the picture background light source of these electronicss, reduce power consumption.
As shown in Figure 1, the networking telephone 1 comprises LCD 2 and keyboard 3, can be connected with Internet by network connection port module 10, and utilize gateway technique to be sent to callee by the digital signal of speech conversion, pass through network filter module 11 subsequently with voice distortion packet (Package) filtering.Before VoP enters the CPU (central processing unit) 4 of the networking telephone 1 inside, also, these VoPs are carried out pre-service by network entity layer module 12, make two communicating ends can transmit the voice digital signal of low distortion in real time, carry out bilateral conversation; CPU (central processing unit) 4 is carried out running according to the pulse signal that crystal oscillation module 5 produces, and after receiving voice digital signal, voice digital signal is carried out digital signal processing (Digital SignalProcessing; DSP), convert voice digital signal to simulating signal, be input in loudspeaker 6 and the microphone 7, produce voice output, the voice content for the user distinguishes callee makes two telephony side link up in the mode of smoothness; Keyboard 3 is available for users to the networking telephone 1 input telephone number or data; LCD 2 can show various related datas and information.Be equipped with because LCD 2 and keyboard 3 all are the working standards of the networking telephone, it is configured in here and does not elaborate.
The characteristics of adjusting the device and method of display backlight brightness of the present invention are, can reduce the power consumption of LCD 2 in the picture procedure for displaying, as shown in the figure, when the operating state of the networking telephone 1 is in standby mode, CPU (central processing unit) 4 is surveyed at any time at the state of keyboard 3, according to surveying the signal of passing back in keyboard 3 state procedures, differentiate the key-press module (not icon) whether the user passes through operation keyboard 3, carry out the data input operation, if the user is at input data, the expression networking telephone 1 is in operating state, transfer operator scheme to by standby mode, at this moment, CPU (central processing unit) 4 is sent command signal to optical sensing module 8 immediately, the power of the light-source brightness of its sensor network phone 1 external environment condition of living in addition, and passback result, after CPU (central processing unit) 4 receives the sensing signal of passback, judge immediately, according to judged result, the output mode backlight of 9 pairs of LCD 2 of backlight control module is adjusted automatically, it can be according to the power of external light source brightness at that time, flexibly adjust the output mode backlight of LCD 2, thereby changed under any lighting environment all with existing pattern with a kind of backlight mode output, the power consumption of LCD 2 in the information procedure for displaying is reduced, also improved the sharpness of LCD 2 display frames.
Fig. 2 is the sterogram of the networking telephone 1, in order to the hardware configuration situation of the partial function module in the framework block schematic diagram of displayed map 1 when reality is used.When the user imports telephone numbers by button 3, CPU (central processing unit) 4 (Fig. 1) requires the light-source brightness of the 8 pairs of networking telephone 1 environment of living in of optical sensing module to carry out sensing, automatically adjust the foundation of LCD 2 output backlight illumination powers as backlight control module 9 (Fig. 1), in addition, if when following two kinds of situations occurring, CPU (central processing unit) 4 (Fig. 1) also will be adjusted the output brightness backlight of LCD 2 automatically.One of situation is: when the incoming call signal is imported, CPU (central processing unit) 4 (Fig. 1) is sent command signal, require the light-source brightness of the 8 pairs of networking telephone 1 environment of living in of optical sensing module to carry out sensing, when LCD subsequently 2 shows the other side's caller IDs, adjust the foundation of output brightness backlight as backlight control module 9; Two of situation is: when microphone 14 is not placed in the appended microphone stand 15 of the networking telephone 1 fuselage, the expression user will carry out the telephone operation program to the networking telephone 1, and CPU (central processing unit) 4 (Fig. 1) will be adjusted the output brightness backlight of LCD 2 simultaneously automatically.
Fig. 3 (A) to Fig. 3 (B) be process flow diagram, shown the networking telephone of the present invention in information output shows, the implementation procedure of electric energy control operation.Its step is as described below:
In step S1, when the operating state of the networking telephone 1 was in standby mode, the key-press module operating position of 4 pairs of keyboards 3 of CPU (central processing unit) was surveyed, and just whether the user was being operated this key-press module and was surveying, and proceeded to step S2 subsequently.
In step S2, the detection data that CPU (central processing unit) 4 will be collected on the keyboard 3 is handled, and whether the differentiation user presses any key-press module on the lower keyboard 3, if the user presses, directly proceeds to step S5, does not press as the user, then proceeds to step S3.
In step S3, have or not incoming information to survey on 4 pairs of networking telephones 1 of CPU (central processing unit), if having, directly proceed to step S5, if do not have, then proceed to step S4.
In step S4, whether the microphone 14 on 4 pairs of networking telephones 1 of CPU (central processing unit) is placed in the microphone stand 15 is confirmed, if microphone 14 is placed in the microphone stand 15 really, proceed to step S5, if not, then return step S1, again the operating position of keyboard 3 is surveyed.
In step S5,4 pairs of optical sensing modules 8 of CPU (central processing unit) are assigned command signal, make it carry out sensing to the light-source brightness in the networking telephone 1 environment of living in, and set gate time, and the output time backlight with restriction LCD 2 proceeds to step S6 subsequently.
In step S6, the signal level state that 4 pairs of optical sensing modules 8 of CPU (central processing unit) are returned is surveyed, if the signal level state that sensor 8 is returned is a high levle, directly proceeds to step S8, if the signal level state that sensor 8 is returned is middle accurate position, then proceed to step S7.
In step S7, CPU (central processing unit) 4 is by backlight control module 9, and the display frame with low level pattern unlatching LCD 2 proceeds to step S9 subsequently.
In step S8, CPU (central processing unit) 4 is by backlight control module 9, and the display frame with high levle pattern unlatching LCD 2 proceeds to step S9 subsequently.
In step S9, the networking telephone 1 shows and previous relevant telephone number and the data of flow processing process on LCD 2 pictures of opening, proceeds to step 10 subsequently.
In step S10, CPU (central processing unit) 4 is surveyed the key-press module operating position of keyboard 3 once more, whether continue to operate other button to differentiate the user, if, then return step S5, again LCD 2 backlight liquid crystal display output gate time is set, if not, then proceed to step S11.
In step S11, CPU (central processing unit) 4 checks whether set gate time has stopped timing, if, proceed to step S12, if not, step S10 then returned again.
In step S12, CPU (central processing unit) 4 drives the output backlight that backlight control module 9 is closed LCD 2, returns step S1 subsequently, when the networking telephone 1 is in standby mode, the operating position of keyboard 3 is surveyed again.
Generally speaking, the present invention makes networking telephone power saving more when carrying out communication operation, by being installed in the light-source brightness situation that optical sensing module reflected on the networking telephone, brightness power according to different external light sources, automatically adjust the output backlight on the LCD,, avoid in the prior art to save power consumption, under any light source condition,, reach the purpose of economize on electricity all with the excessive situation of the model identical output power consumption that is caused backlight.
Claims (10)
1. the device that can adjust display backlight brightness, it can be used on the electronics that has processing unit and operation-interface, according to the light-source brightness of environment, adjusts the background light source brightness of display automatically, it is characterized in that this device that can adjust display backlight brightness comprises:
Optical sensing module carries out sensing to the light source power of electronics operating environment of living in, and converts electronic signal to, sends processing unit to, carries out the differentiation operation of the strong and weak degree of light source; And,
Backlight control module, after finishing that light source is strong and weak and differentiate according to processing unit, the control signal of output is adjusted the backlight illumination of display.
2. the device of adjusting display backlight brightness as claimed in claim 1 is characterized in that, described display is the LCD with Presentation Function backlight.
3. the device of adjusting display backlight brightness as claimed in claim 1 is characterized in that described electronics is the networking telephone.
4. the device of adjusting display backlight brightness as claimed in claim 1 is characterized in that described optical sensing module is a photodiode.
5. the device of adjusting display backlight brightness as claimed in claim 1 is characterized in that described processing unit is a CPU (central processing unit).
6. the device of adjusting display backlight brightness as claimed in claim 1 is characterized in that described operation-interface is a keyboard.
7. the method that can adjust display backlight brightness, it can be used on the electronics that has processing unit and operation-interface, according to the light-source brightness of environment of living in, the background light source brightness of display is adjusted, it is characterized in that this method that can adjust display backlight brightness comprises:
(1) make processing unit survey, differentiate operation-interface and whether be in the operator scheme at the operating position of operation-interface, if not, proceed to step (2), if then directly proceed to step (3);
Whether have extraneous signal be sent to electronics on, if having, carry out step (3) if (2) making processing unit survey, if no, then make processing unit differentiate electronics and whether be in operating mode, if, carry out step (3), if not, step (1) then returned;
(3) make the gate time that display backlight is opened in the processing unit set information output procedure, and the signal level state of optical sensing module output is differentiated, adjust the foundation of accurate position backlight as backlight control module;
(4) the accurate position of adjusting according to backlight control module on display shows the related data of user's input and output, and surveys the user by processing unit and whether continue to use other operation-interfaces, if, return step (3), if not, then carry out step (5); And,
(5) make processing unit differentiate gate time and whether stop, if, close display and return step (1), if not, then return step (4), continue the operational circumstances of operation-interface is surveyed.
8. the method for adjusting display backlight brightness as claimed in claim 7 is characterized in that, the background light source brightness of described display is to adjust with automated manner.
9. the method for adjusting display backlight brightness as claimed in claim 7 is characterized in that step 3 also comprises: when the optical sensing module output signal was high levle, processing unit was with the pattern opening display of high levle.
10. the method for adjusting display backlight brightness as claimed in claim 7 is characterized in that step 3 also comprises: when the optical sensing module output signal was low level, processing unit was with the pattern opening display of low level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA03100573XA CN1519623A (en) | 2003-01-20 | 2003-01-20 | Device and method capable of adjusting brightness of backlight in display |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA03100573XA CN1519623A (en) | 2003-01-20 | 2003-01-20 | Device and method capable of adjusting brightness of backlight in display |
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| CN1519623A true CN1519623A (en) | 2004-08-11 |
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| CNA03100573XA Pending CN1519623A (en) | 2003-01-20 | 2003-01-20 | Device and method capable of adjusting brightness of backlight in display |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100346202C (en) * | 2004-12-06 | 2007-10-31 | 奇菱科技股份有限公司 | Apparatus and method for controlling brightness of intelligent type displaying panel |
| CN100401146C (en) * | 2005-01-27 | 2008-07-09 | 惠普开发有限公司 | Keyboard illumination system and method |
| CN100407179C (en) * | 2005-04-08 | 2008-07-30 | 环达电脑(上海)有限公司 | Firmware module used on liquid crystal display |
| CN100418133C (en) * | 2006-03-31 | 2008-09-10 | 深圳创维一Rgb电子有限公司 | Self-adaptive control unit and method for display quality of TV |
| CN100433121C (en) * | 2004-06-10 | 2008-11-12 | 三星电子株式会社 | Display device and driving method thereof |
| CN100516987C (en) * | 2005-12-23 | 2009-07-22 | 群康科技(深圳)有限公司 | Liquid crystal display and its automatic regulating method |
| US7586479B2 (en) | 2004-06-10 | 2009-09-08 | Samsung Electronics Co., Ltd. | Display device and driving method thereof |
| CN101620819A (en) * | 2009-06-25 | 2010-01-06 | 北京中星微电子有限公司 | Dynamic regulation method and dynamic regulation device for displaying image back light brightness, and moving display device |
| US7742035B2 (en) | 2005-12-23 | 2010-06-22 | Innolux Display Corp. | Liquid crystal display and driving method thereof for adjusting refresh rate and luminance according to that of ambient light |
| CN101535890B (en) * | 2006-11-24 | 2011-04-06 | 索尼爱立信移动通讯有限公司 | Light sensor for luminance control in a display in a portable device |
| CN101621586B (en) * | 2008-06-30 | 2012-10-03 | 宏达国际电子股份有限公司 | Handheld device and power-saving method |
| CN102957922A (en) * | 2011-08-26 | 2013-03-06 | 宏碁股份有限公司 | Display system and method for same |
| US8868134B2 (en) | 2008-05-29 | 2014-10-21 | High Tech Computer, Corp. | Handheld device and power saving method therefor |
| CN104423913A (en) * | 2013-08-30 | 2015-03-18 | 联想(北京)有限公司 | Light parameter measuring method and device, screen adjusting method and electronic device |
| CN109637467A (en) * | 2019-02-19 | 2019-04-16 | 昆山龙腾光电有限公司 | A kind of display panel and liquid crystal display device |
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- 2003-01-20 CN CNA03100573XA patent/CN1519623A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7586479B2 (en) | 2004-06-10 | 2009-09-08 | Samsung Electronics Co., Ltd. | Display device and driving method thereof |
| CN100433121C (en) * | 2004-06-10 | 2008-11-12 | 三星电子株式会社 | Display device and driving method thereof |
| CN100346202C (en) * | 2004-12-06 | 2007-10-31 | 奇菱科技股份有限公司 | Apparatus and method for controlling brightness of intelligent type displaying panel |
| CN100401146C (en) * | 2005-01-27 | 2008-07-09 | 惠普开发有限公司 | Keyboard illumination system and method |
| CN100407179C (en) * | 2005-04-08 | 2008-07-30 | 环达电脑(上海)有限公司 | Firmware module used on liquid crystal display |
| US7742035B2 (en) | 2005-12-23 | 2010-06-22 | Innolux Display Corp. | Liquid crystal display and driving method thereof for adjusting refresh rate and luminance according to that of ambient light |
| CN100516987C (en) * | 2005-12-23 | 2009-07-22 | 群康科技(深圳)有限公司 | Liquid crystal display and its automatic regulating method |
| CN100418133C (en) * | 2006-03-31 | 2008-09-10 | 深圳创维一Rgb电子有限公司 | Self-adaptive control unit and method for display quality of TV |
| CN101535890B (en) * | 2006-11-24 | 2011-04-06 | 索尼爱立信移动通讯有限公司 | Light sensor for luminance control in a display in a portable device |
| US8868134B2 (en) | 2008-05-29 | 2014-10-21 | High Tech Computer, Corp. | Handheld device and power saving method therefor |
| CN101621586B (en) * | 2008-06-30 | 2012-10-03 | 宏达国际电子股份有限公司 | Handheld device and power-saving method |
| CN101620819A (en) * | 2009-06-25 | 2010-01-06 | 北京中星微电子有限公司 | Dynamic regulation method and dynamic regulation device for displaying image back light brightness, and moving display device |
| CN101620819B (en) * | 2009-06-25 | 2013-10-16 | 北京中星微电子有限公司 | Dynamic regulation method and dynamic regulation device for displaying image back light brightness, and moving display device |
| CN102957922A (en) * | 2011-08-26 | 2013-03-06 | 宏碁股份有限公司 | Display system and method for same |
| CN104423913A (en) * | 2013-08-30 | 2015-03-18 | 联想(北京)有限公司 | Light parameter measuring method and device, screen adjusting method and electronic device |
| CN104423913B (en) * | 2013-08-30 | 2017-03-01 | 联想(北京)有限公司 | Light measurement method of parameters, device and screen adjustment method, electronic equipment |
| CN109637467A (en) * | 2019-02-19 | 2019-04-16 | 昆山龙腾光电有限公司 | A kind of display panel and liquid crystal display device |
| CN109637467B (en) * | 2019-02-19 | 2020-10-30 | 昆山龙腾光电股份有限公司 | Display panel and liquid crystal display device |
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