CN102088500A - Method for dynamically controlling backlight according to contents of mobile phone screen - Google Patents
Method for dynamically controlling backlight according to contents of mobile phone screen Download PDFInfo
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- CN102088500A CN102088500A CN2009101998118A CN200910199811A CN102088500A CN 102088500 A CN102088500 A CN 102088500A CN 2009101998118 A CN2009101998118 A CN 2009101998118A CN 200910199811 A CN200910199811 A CN 200910199811A CN 102088500 A CN102088500 A CN 102088500A
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- crystal display
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Abstract
The present invention relates to a method for dynamically controlling a backlight according to contents of a mobile phone screen, the method comprises the steps as follows: A. a baseband chip sends a control instruction to a LCDC (Liquid Crystal Display Controller); B. the LCDC acquires the contents displayed by the mobile phone screen at present; C. the LCDC outputs a PWM (Pulse-Width Modulation) signal with an adjustable duty ratio to a LEDC (Light Emitting Driving Controller) according to the contents acquired; and D. the LEDC outputs a corresponding backlight driving PWM signal to a screen backlight driving port according to the PWM signal received. Compared with the prior art, the method in the present invention can dynamically control the backlight according to the different contents displayed by the screen without any extraneous interference, so that current consumption of the backlight is reduced, color of the screen display is bright and brilliant, and users can feel comfortable when watching the screen of the mobile phone.
Description
Technical field
The present invention relates to backlight control DBC (Dynamic Backlingt Controll), particularly relate to a kind of according to the dynamic control of mobile phone screen content method backlight.
Background technology
At present cell-phone function from strength to strength, whose power consumption of bringing is also increasing.Power consumption has become one of important competition spot of mobile phone.And screen backlight is the rich and influential family of mobile phone consumption stream.Under the prerequisite that does not influence user's sense organ, the dynamic adjustments backlight illumination is the good method that reduces consumption stream backlight.The technology backlight that has occurred in the market according to the strong and weak dynamic adjustments of surrounding environment light, but still there are some shortcomings in this technology, is subjected to external disturbance big, has lived in sensitization sensro etc. with stick shift because of carelessness such as the user.
Summary of the invention
Technical problem to be solved by this invention is exactly to provide a kind of for the defective that overcomes above-mentioned prior art existence dynamically to control method backlight according to the mobile phone screen content.
Purpose of the present invention can be achieved through the following technical solutions: a kind ofly it is characterized in that according to the dynamic control method backlight of mobile phone screen content, comprise step:
A. the baseband chip sending controling instruction is given LCDs controller LCDC;
B. liquid crystal display screen controller LCDC gathers the shown content of current phone screen;
C. liquid crystal display screen controller LCDC gives backlight driving governor LEDC according to the adjustable pwm signal of content output duty cycle that collects;
D. backlight driving governor LEDC drives pwm signal according to the pwm signal output corresponding backlight of receiving and drives port to screen backlight.
Described liquid crystal display screen controller LCDC adopts the liquid crystal display screen controller that has CUSTOM BLOCK function.
Described steps A also comprises: baseband chip is configured the CUSTOMBLOCK register of liquid crystal display screen controller LCDC.
Compared with prior art, the present invention is not subjected to external interference according to the different content of screen display and dynamic adjustments is backlight, and it is bright bright-coloured not only to have reduced consumption stream but also screen display backlight, and the user also can be very comfortable when watching.
Description of drawings
Fig. 1 is a flow chart of the present invention;
Fig. 2 is a hardware configuration schematic diagram of the present invention.
Embodiment
The present invention will be further described below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of according to the dynamic control of mobile phone screen content method backlight, comprise step:
A. the baseband chip sending controling instruction is given LCDs controller LCDC;
B. liquid crystal display screen controller LCDC gathers the shown content of current phone screen;
C. liquid crystal display screen controller LCDC gives backlight driving governor LEDC according to the adjustable pwm signal of content output duty cycle that collects;
D. backlight driving governor LEDC drives pwm signal according to the pwm signal output corresponding backlight of receiving and drives port to screen backlight.
Described liquid crystal display screen controller LCDC adopts the liquid crystal display screen controller that has CUSTOM BLOCK function.
Described steps A also comprises: baseband chip is configured the CUSTOMBLOCK register of liquid crystal display screen controller LCDC.
When opening the DBC function, to liquid crystal display screen controller (LCDC) write order, by the CUSTOM BLOCK Register of collocating LCD C, LCDC can analyze the mobile phone screen content to baseband chip by data wire, export the PWM waveform then, the duty ratio difference of the different PWM of content.
LEDC is for driving the control chip of screen backlight, and the M1PIN of LEDC is used to drive screen backlight LED.When driving when mouthful be high level, LED backlight does not work, and when to drive mouth be low level, LED backlight will be bright.And LEDC also has an input interface, can receive the PWM waveform of the output of LCDC, by BB control LEDC, makes its M1PIN output become logical relation with the PWM of LCDC output.In inferior our logical relation of configuration be: LEDC receives the PWM of LCDC, and M1PIN is output as height when receiving high level, not then backlight not working, and when receiving low level the time, M1 PIN output is low, and meeting then backlight is lighted.The power consumption of LED backlight has like this just reduced.Because the frequency of PWM is very fast, be higher than the reaction time of human eye far away.So concerning the user,, make the color of screen display more bright-coloured on the contrary without any influence.
When closing the DBC function, baseband chip by data wire to liquid crystal display screen controller (LCDC) write order, CUSTOM BLOCK Register by collocating LCD C, this moment, LCDC just can not analyze the mobile phone screen content, then LCDC can not export PWM, the M1PIN of LEDC just can not export the PWM waveform yet like this, and the DBC function is closed
As shown in Figure 2, hardware configuration of the present invention comprises: baseband chip 1, liquid crystal display screen controller 2 and backlight driving governor 3, baseband chip 1 is connected with liquid crystal display screen controller 2 and backlight driving governor 3, and liquid crystal display screen controller 2 is connected with backlight driving governor 3.
Claims (3)
1. one kind according to the dynamic control method backlight of mobile phone screen content, it is characterized in that, comprises step:
A. the baseband chip sending controling instruction is given LCDs controller LCDC;
B. liquid crystal display screen controller LCDC gathers the shown content of current phone screen;
C. liquid crystal display screen controller LCDC gives backlight driving governor LEDC according to the adjustable pwm signal of content output duty cycle that collects;
D. backlight driving governor LEDC drives pwm signal according to the pwm signal output corresponding backlight of receiving and drives port to screen backlight.
2. according to claim 1 a kind of according to the dynamic control of mobile phone screen content method backlight, it is characterized in that described liquid crystal display screen controller LCDC adopts the liquid crystal display screen controller that has CUSTOM BLOCK function.
3. according to claim 2 a kind of according to the dynamic control of mobile phone screen content method backlight, it is characterized in that described steps A also comprises: baseband chip is configured the CUSTOMBLOCK register of liquid crystal display screen controller LCDC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101998118A CN102088500A (en) | 2009-12-02 | 2009-12-02 | Method for dynamically controlling backlight according to contents of mobile phone screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101998118A CN102088500A (en) | 2009-12-02 | 2009-12-02 | Method for dynamically controlling backlight according to contents of mobile phone screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102088500A true CN102088500A (en) | 2011-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101998118A Pending CN102088500A (en) | 2009-12-02 | 2009-12-02 | Method for dynamically controlling backlight according to contents of mobile phone screen |
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| CN (1) | CN102088500A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102355536A (en) * | 2011-09-26 | 2012-02-15 | 惠州Tcl移动通信有限公司 | Electricity saving method and system for mobile terminal display screen |
| CN103325355A (en) * | 2013-06-18 | 2013-09-25 | 华南理工大学 | Method for dynamically adjusting backlight brightness based on image content |
| CN103810980A (en) * | 2014-01-23 | 2014-05-21 | 华南理工大学 | Image occurrence frequency based liquid crystal display power consumption reducing method |
| CN104065811A (en) * | 2014-03-13 | 2014-09-24 | 苏州天鸣信息科技有限公司 | Method for adjusting PWM (Pulse Width Modulation) duty ratio based on mobile phone unlocking state |
| CN104112430A (en) * | 2014-07-05 | 2014-10-22 | 广东欧珀移动通信有限公司 | System and method for improving black-as-one effect and dynamic contract ratio of display screen |
| CN105590588A (en) * | 2015-12-21 | 2016-05-18 | 武汉华星光电技术有限公司 | Backlight adjusting method, liquid crystal display device, and electronic device |
| CN106782298A (en) * | 2017-01-18 | 2017-05-31 | 深圳市金研微科技有限公司 | A kind of brightness adjusting method of LED display screen system |
| CN107578753A (en) * | 2017-09-22 | 2018-01-12 | 惠州Tcl移动通信有限公司 | Mobile terminal and brightness of display screen regulation processing method and storage medium |
| CN110503924A (en) * | 2019-07-31 | 2019-11-26 | 华勤通讯技术有限公司 | Content-adaptive method for controlling backlight thereof and electronic equipment |
-
2009
- 2009-12-02 CN CN2009101998118A patent/CN102088500A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102355536A (en) * | 2011-09-26 | 2012-02-15 | 惠州Tcl移动通信有限公司 | Electricity saving method and system for mobile terminal display screen |
| CN103325355A (en) * | 2013-06-18 | 2013-09-25 | 华南理工大学 | Method for dynamically adjusting backlight brightness based on image content |
| CN103325355B (en) * | 2013-06-18 | 2016-01-20 | 华南理工大学 | A kind of method of image content-based dynamic adjustments backlight illumination |
| CN103810980A (en) * | 2014-01-23 | 2014-05-21 | 华南理工大学 | Image occurrence frequency based liquid crystal display power consumption reducing method |
| CN104065811B (en) * | 2014-03-13 | 2016-08-17 | 深圳市联合同创科技有限公司 | Method for adjusting PWM duty ratio based on unlocking state of mobile phone |
| CN104065811A (en) * | 2014-03-13 | 2014-09-24 | 苏州天鸣信息科技有限公司 | Method for adjusting PWM (Pulse Width Modulation) duty ratio based on mobile phone unlocking state |
| CN104112430A (en) * | 2014-07-05 | 2014-10-22 | 广东欧珀移动通信有限公司 | System and method for improving black-as-one effect and dynamic contract ratio of display screen |
| CN105590588A (en) * | 2015-12-21 | 2016-05-18 | 武汉华星光电技术有限公司 | Backlight adjusting method, liquid crystal display device, and electronic device |
| CN105590588B (en) * | 2015-12-21 | 2018-06-29 | 武汉华星光电技术有限公司 | Backlight adjusting method, liquid crystal display device and electronic equipment |
| CN106782298A (en) * | 2017-01-18 | 2017-05-31 | 深圳市金研微科技有限公司 | A kind of brightness adjusting method of LED display screen system |
| WO2018133182A1 (en) * | 2017-01-18 | 2018-07-26 | 深圳市金研微科技有限公司 | Luminance adjusting method for led display screen system |
| CN107578753A (en) * | 2017-09-22 | 2018-01-12 | 惠州Tcl移动通信有限公司 | Mobile terminal and brightness of display screen regulation processing method and storage medium |
| CN110503924A (en) * | 2019-07-31 | 2019-11-26 | 华勤通讯技术有限公司 | Content-adaptive method for controlling backlight thereof and electronic equipment |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110608 |