CN101751870A - Delayed backlight adjusting method of portable electronic device - Google Patents
Delayed backlight adjusting method of portable electronic device Download PDFInfo
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- CN101751870A CN101751870A CN200810180286A CN200810180286A CN101751870A CN 101751870 A CN101751870 A CN 101751870A CN 200810180286 A CN200810180286 A CN 200810180286A CN 200810180286 A CN200810180286 A CN 200810180286A CN 101751870 A CN101751870 A CN 101751870A
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Abstract
The invention relates to a delayed backlight adjusting method of a portable electronic device, wherein after the portable electronic device is pre-set to execute a pre-set mode and sense an environmental light brightness, when the environmental light brightness is greater than a first critical value, the portable electronic device is pre-set to execute a daylight mode. When in the daylight mode, if the environmental light brightness is less than a second critical value, the portable electronic device is pre-set to execute the pre-set mode. The first critical value is obviously greater than the second critical value, therefore, when the background light is enough, the backlight can be turned off, so as to save electric power. In addition, when in the pre-set mode, if the environmental light brightness is less than a third critical value, the portable electronic device is pre-set to execute an overnight mode; and when in the overnight mode, if the environmental light brightness is less than a fourth critical value, the portable electronic device is pre-set to execute the pre-set mode. Therefore, the delayed backlight adjusting method can prevent the rapid conversion of the backlight between the general mode and the daylight mode or the overnight mode, so as to avoid the discomfort watching of a user.
Description
Technical field
The present invention relates to a kind of portable electronic devices backlight adjusting method, particularly about a kind of delayed backlight adjusting method of portable electronic devices.
Background technology
Along with the progress of science and technology, the function of more and more portable electronic devices such as mobile phone, PDA(Personal Digital Assistant) is become stronger day by day, and also popularizes gradually and is used by the consumer.Moreover along with the technology progress and the price decline of small-medium size liquid crystal panel, the user watches the probability of portable electronic devices liquid crystal panel and demand also to rise day by day.
Demonstration image quality part at relevant portable electronic devices liquid crystal panel (LCD), because the user may often middlely in action use portable electronic devices, therefore at first to improve along with varying environment light, adjust the screen light source automatically, to reach energy-conservation and to read comfortable function.When if external light source is too bright, backlight open is just wasted power supply, so close automatically, allow LCD reflection source voluntarily, yet when ambient light was too dark, the relative ambient light of the picture that display device presented was often brighter, and so forceful rays will cause the discomfort of user's eye.
Generally speaking, LCD transmissive (transmissive) shows that also can reflect (reflective) shows, depends on light source position.Transmission-type LCD is illuminated by screen light source behind, watches then in screen another side (front).Such LCD is used in the application that needs the high brightness demonstration more, for example graphoscope.Reflection type LCD is common in electronic watch and PDA, and by the reflecting surface of back the light of outside is reflected and to illuminate screen.Half-penetrating reflective (transreflective) LCD both can be used as transmission-type and use, and also can be used as reflection-type and used.When extraneous light was very sufficient, this LCD was according to reflection-type work, and in the time of the extraneous light deficiency, it can be used as transmission-type again and use.
Based on above-mentioned defective, a kind of display with brightness adjusting device arises at the historic moment, and brightness adjusting device can comprise a light source sensing cell and a backlight adjusting unit.As Fig. 1, for the backlight illumination of this brightness adjusting device is adjusted curve, and suppose that this display is half-penetrating reflective LCD, this light source sensing cell institute sensitive context luminance brightness can be divided into three zones, is respectively low light level zone, normal region and the high light zone defined by critical value C1 and C2.Backlight adjusting unit and according to the present zone of surround lighting, and adjust size backlight.Yet in above-mentioned brightness adjusting device, if user's (for example using PDA to receive the personnel of curb parking expense) is in mobile status, environmental light brightness may be beated near critical value C1 and C2, causes rapid variation backlight.Can cause user's vision tired out like this, and make the backlight adjusting unit overwork frequent.
Summary of the invention
Purpose of the present invention is promptly providing a kind of with sluggish mode (hysteresis) adjustment method backlight, to avoid the problem of beating of the variation backlight on portable electronic devices.
To achieve these goals, the invention provides a kind of delayed backlight adjusting method of portable electronic devices, after default this portable electronic devices operates in a preset mode and sensing one environmental light brightness, when environmental light brightness during, set this portable electronic devices and operate in a daylight mode greater than one first critical value (for example 2000 lumens).When daylight mode, if environmental light brightness is set this portable electronic devices and operated in this preset mode during less than one second critical value (for example 1000 lumens).Therefore this first critical value when background is bright and clear, can close backlight and saving electric power obviously greater than second critical value.Moreover delayed backlight adjusting method can prevent conversion rapidly between general modfel and daylight mode backlight, watches discomfort to avoid the user.
In addition, when preset mode, if environmental light brightness during less than one the 3rd critical value (as 100 lumens), is set this portable electronic devices and operated in pattern in one night; And when Night, if environmental light brightness during greater than one the 4th critical value (as 150 lumens), is set this portable electronic devices and operated in this preset mode.Delayed backlight adjusting method can prevent conversion rapidly between general modfel and Night backlight, watches discomfort to avoid the user.
Technique effect of the present invention is: provide a kind of and adjusted method backlight in sluggish mode, solved the problem of beating of the variation backlight on portable electronic devices.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Description of drawings
Fig. 1 is that the backlight illumination of an existing brightness adjusting device is adjusted curve;
Fig. 2 is the portable electronic devices according to the inventive method operation;
Fig. 3 is the delayed backlight adjusting method constitutional diagram according to portable electronic devices of the present invention;
Fig. 4 adjusts curve according to the backlight illumination of a portable electronic devices of the inventive method operation.
Wherein, Reference numeral
Prior art
C1, the C2 critical value
The present invention
Analog-digital converter 104 LCD (LCD) backlight driver 110
Key-press backlight unit 112LCD 120
The S100 general modfel
The S110 daylight mode
The S120 Night
Embodiment
Below in conjunction with accompanying drawing structural principle of the present invention and principle of work are done concrete description:
Fig. 2 is the portable electronic devices according to the inventive method operation, and this portable electronic devices comprises a controller 100, an optical sensor 102, an analog-digital converter 104, a LCD (LCD) backlight driver 110, a key-press backlight unit 112, reaches a LCD 120.
This optical sensor 102 sensings one bias light brightness, and this bias light brightness delivered to this analog-digital converter 104.This analog-digital converter 104 becomes a bias light brightness digital value with this bias light brightness transition, delivers to controller 100 then and handles.This controller 100 is electrically connected to this LCD backlight driver 110 and key-press backlight unit 112 respectively, with foundation method of the present invention (seeing aftermentioned for details) and this bias light brightness digital value, drive this LCD backlight driver 110 and key-press backlight unit 112 respectively, and then the backlight and key-press backlight of control LCD.
This LCD can be a half-penetrating reflective LCD (transreflective), the BlanviewLCD of Casio for example, but the inventive method scope of application is not subject to the limits.
Fig. 3 is the delayed backlight adjusting method constitutional diagram (statediagram) according to portable electronic devices of the present invention.Portable electronic devices predetermined registration operation pattern of the present invention is general modfel (S100), and when bias light brightness during greater than one first critical value LUX1, this controller 100 can be set in daylight mode (S110) with this portable electronic devices, wherein under daylight mode, these controller 100 these LCD backlight drivers 110 of control are minimum brightness, reaching this key-press backlight unit 112 of control is minimum brightness, and for example this minimum brightness can be zero.
Under daylight mode (S110), when bias light brightness during less than one second critical value LUX2, this controller 100 can be set this portable electronic devices and return general modfel (S100), and when general modfel, these controller 100 these LCD backlight drivers 110 of control are the default brightness of user, reaching this key-press backlight unit 112 of control is the default brightness of user, and for example the default brightness of this user can be maximum (100%) brightness.The aforesaid second critical value LUX2 is significantly less than the first critical value LUX1, and for example the first critical value LUX1 is 2000 lumens (under at daylight), and the second critical value LUX2 is 1000 lumens.Therefore when background is bright and clear, can close backlightly, and be light source fully with the bias light, save portable electronic devices and consume electric power.Moreover, because the aforesaid second critical value LUX2 and the first critical value LUX1 have notable difference, can provide the sluggish effect of backlight control, avoid conversion rapidly between general modfel (S100) and daylight mode (S110) backlight, watch discomfort to avoid the user.
Under general modfel (S100), and when bias light brightness during less than one the 3rd critical value LUX3, this controller 100 can be set in Night (S120) with this portable electronic devices, wherein under Night, these controller 100 these LCD backlight drivers 110 of control are a less brightness, reaching this key-press backlight unit 112 of control is less brightness, and for example this less brightness can be 30% of high-high brightness, finds out the LCD displaying contents so that the user still can know under faint light.Under Night (S120), when bias light brightness during greater than one the 4th critical value LUX4, this controller 100 can be set this portable electronic devices return general modfel (S100).Aforesaid the 3rd critical value LUX3 is significantly less than the 4th critical value LUX4, and for example the 3rd critical value LUX3 is 100 lumens, and the 4th critical value LUX4 is 150 lumens.Therefore avoid conversion rapidly between general modfel (S100) and Night (S120) backlight, watch discomfort to avoid the user.
Fig. 4 adjusts curve according to the backlight illumination of a portable electronic devices of the inventive method operation, can find out that method of the present invention can be adjusted at backlight illumination provides at least one sluggish loop in the curve, so that portable electronic devices can not change the problem that have the rapid light and shade of picture to change because of bias light brightness.Moreover the user only need be set in the setting backlight under the general modfel (preset mode), can all can know the LCD screen of watching portable electronic devices at daylight, general lightness environment, night, significantly reduce the ease of use of operation easier and lifting portable electronic devices.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (9)
1. the delayed backlight adjusting method of a portable electronic devices, this portable electronic devices has an optical sensor, a LCD backlight driver and a key-press backlight unit, it is characterized in that this method comprises:
Sensing one environmental light brightness;
Default this portable electronic devices operates in a preset mode;
When environmental light brightness during, set this portable electronic devices and operate in a daylight mode greater than one first critical value; And
When daylight mode, if environmental light brightness during less than one second critical value, is set this portable electronic devices and operated in this preset mode, wherein this first critical value is greater than this second critical value.
2. the method for claim 1 is characterized in that, described first critical value is 2000 lumens, and second critical value is 1000 lumens.
3. the method for claim 1 is characterized in that, under this preset mode, this LCD backlight driver is set to maximal value with backlight value.
4. the method for claim 1 is characterized in that, under this daylight mode, this LCD backlight driver is set to minimum value with backlight value.
5. the method for claim 1 is characterized in that, also comprises:
When preset mode, if environmental light brightness during less than one the 3rd critical value, is set this portable electronic devices and operated in pattern in one night; And
When Night, if environmental light brightness during greater than one the 4th critical value, is set this portable electronic devices and operated in this preset mode, wherein the 4th critical value is greater than the 3rd critical value.
6 methods as claimed in claim 5 is characterized in that, described the 3rd critical value is 100 lumens, and the 4th critical value is 150 lumens.
7. method as claimed in claim 5 is characterized in that, under this Night, this LCD backlight driver is set to peaked 30% with backlight value.
8. method as claimed in claim 5 is characterized in that, under this Night, this key-press backlight unit is set at peaked 30% with key-press backlight.
9. the method for claim 1 is characterized in that, described LCD is a half-penetrating reflective LCD.
10. the method for claim 1 is characterized in that, described portable electronic devices is a personal digital assistant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810180286A CN101751870A (en) | 2008-12-03 | 2008-12-03 | Delayed backlight adjusting method of portable electronic device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810180286A CN101751870A (en) | 2008-12-03 | 2008-12-03 | Delayed backlight adjusting method of portable electronic device |
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| CN101751870A true CN101751870A (en) | 2010-06-23 |
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| CN200810180286A Pending CN101751870A (en) | 2008-12-03 | 2008-12-03 | Delayed backlight adjusting method of portable electronic device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102169682A (en) * | 2011-03-18 | 2011-08-31 | 中兴通讯股份有限公司 | Terminal, ambient light adapting method and system |
| CN103327194A (en) * | 2013-06-18 | 2013-09-25 | 广东欧珀移动通信有限公司 | Mode switching method and device for browser skin brightness |
| WO2014067382A1 (en) * | 2012-11-05 | 2014-05-08 | Tencent Technology (Shenzhen) Company Limited | Method and device for controlling applications |
| CN104011623A (en) * | 2011-12-23 | 2014-08-27 | 英特尔公司 | A method, apparatus, and system for energy efficiency and energy conservation including dynamic user interface based on viewing conditions |
| CN104143323A (en) * | 2014-07-22 | 2014-11-12 | 华北电力大学 | Micro-power-consumption energy-saving displaying method |
| CN104217704A (en) * | 2014-08-26 | 2014-12-17 | 小米科技有限责任公司 | Backlight brightness control method and device |
| CN105208191A (en) * | 2015-08-13 | 2015-12-30 | 小米科技有限责任公司 | Mode switching method and mode switching device |
| CN106020416A (en) * | 2016-05-16 | 2016-10-12 | 安徽华米信息科技有限公司 | Screen display method and device and intelligent equipment |
| CN107077830A (en) * | 2016-10-25 | 2017-08-18 | 深圳市大疆创新科技有限公司 | Screen brightness regulation method and unmanned aerial vehicle (UAV) control end suitable for unmanned aerial vehicle (UAV) control end |
| CN108735170A (en) * | 2018-05-29 | 2018-11-02 | 奥克斯空调股份有限公司 | Screen backlight control method and remote controler |
-
2008
- 2008-12-03 CN CN200810180286A patent/CN101751870A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102169682A (en) * | 2011-03-18 | 2011-08-31 | 中兴通讯股份有限公司 | Terminal, ambient light adapting method and system |
| CN102169682B (en) * | 2011-03-18 | 2014-10-22 | 中兴通讯股份有限公司 | Terminal, ambient light adapting method and system |
| CN104011623A (en) * | 2011-12-23 | 2014-08-27 | 英特尔公司 | A method, apparatus, and system for energy efficiency and energy conservation including dynamic user interface based on viewing conditions |
| WO2014067382A1 (en) * | 2012-11-05 | 2014-05-08 | Tencent Technology (Shenzhen) Company Limited | Method and device for controlling applications |
| CN103793443A (en) * | 2012-11-05 | 2014-05-14 | 腾讯科技（深圳）有限公司 | Application control method and device |
| CN103327194A (en) * | 2013-06-18 | 2013-09-25 | 广东欧珀移动通信有限公司 | Mode switching method and device for browser skin brightness |
| CN104143323A (en) * | 2014-07-22 | 2014-11-12 | 华北电力大学 | Micro-power-consumption energy-saving displaying method |
| CN104217704A (en) * | 2014-08-26 | 2014-12-17 | 小米科技有限责任公司 | Backlight brightness control method and device |
| CN105208191A (en) * | 2015-08-13 | 2015-12-30 | 小米科技有限责任公司 | Mode switching method and mode switching device |
| CN105208191B (en) * | 2015-08-13 | 2019-02-12 | 小米科技有限责任公司 | Mode switching method and device |
| US11100872B2 (en) | 2015-08-13 | 2021-08-24 | Xiaomi Inc. | Method and apparatus for display mode switching based on ambient light |
| CN106020416A (en) * | 2016-05-16 | 2016-10-12 | 安徽华米信息科技有限公司 | Screen display method and device and intelligent equipment |
| CN106020416B (en) * | 2016-05-16 | 2019-05-07 | 安徽华米信息科技有限公司 | Screen display method, device and smart machine |
| CN107077830A (en) * | 2016-10-25 | 2017-08-18 | 深圳市大疆创新科技有限公司 | Screen brightness regulation method and unmanned aerial vehicle (UAV) control end suitable for unmanned aerial vehicle (UAV) control end |
| CN107077830B (en) * | 2016-10-25 | 2021-05-04 | 深圳市大疆创新科技有限公司 | Screen brightness adjusting method suitable for unmanned aerial vehicle control end and unmanned aerial vehicle control end |
| CN108735170A (en) * | 2018-05-29 | 2018-11-02 | 奥克斯空调股份有限公司 | Screen backlight control method and remote controler |
| CN108735170B (en) * | 2018-05-29 | 2019-07-02 | 奥克斯空调股份有限公司 | Screen backlight control method and remote controler |
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Open date: 20100623 |