CN103474036B - Display brightness control method, system - Google Patents
Display brightness control method, system Download PDFInfo
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- CN103474036B CN103474036B CN201310438465.0A CN201310438465A CN103474036B CN 103474036 B CN103474036 B CN 103474036B CN 201310438465 A CN201310438465 A CN 201310438465A CN 103474036 B CN103474036 B CN 103474036B
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- display
- ambient brightness
- brightness value
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- brightness
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Abstract
The invention discloses a kind of display brightness control method, comprising: the 1st step, the luminance sensor of external unit gathers ambient brightness data; 2nd step, according to the described ambient brightness data gathered, calculates ambient brightness value and is sent to display end; 3rd step, according to described ambient brightness value, calculates the backlight brightness values matched with described ambient brightness value; 4th step, display chip reads described backlight brightness values, and the backlight driving unit controlling described display adjusts described display backlight brightness.Present invention also offers a kind of display brightness regulating system and display.Beneficial effect of the present invention is, be connected with display by external unit, thus make display the brightness of self can be regulated to change according to the ambient brightness data of external unit collection, energy-conservation and while providing comfortable visual experience, luminance sensor and peripheral circuit need not be increased over the display, save cost, reduce design difficulty.
Description
Technical field
The present invention relates to display technology field, particularly relate to a kind of display brightness control method, system.
Background technology
Luminance sensor (sensor), namely photoreceptor can carry out the device of adjusting screen light and shade according to around bright bright-dark degree.Part mobile phone, panel computer carrying brightness control function, in the place that light is strong, increases the brightness of screen, in the place that light is dark, reducing the brightness of screen to reach the energy-conservation object with providing comfortable visual experience.
Current, the display of part PC is provided with brightness sensor equally, and some displays carry brightness sensor at present, carry brightness sensor after perception surrounding environment brightness change, adjusting brightness of display, but, the display of PC arranges brightness sensor there is following defect:
1. increase brightness sensor over the display, add the manufacturing cost of display;
2. need to ensure that brightness sensor normally works at the upper peripheral circuit that increases of the printed circuit board (PCB) (PCB) of PC, add the difficulty of design.
Summary of the invention
The object of this invention is to provide a kind of display brightness control method, system and display, to solve the above-mentioned defect existed in prior art.
For realizing object of the present invention, the invention provides a kind of display brightness control method, comprising:
1st step, the luminance sensor of external unit gathers ambient brightness data;
2nd step, according to the described ambient brightness data gathered, calculates ambient brightness value and is sent to display end;
3rd step, according to described ambient brightness value, calculates the backlight brightness values matched with described ambient brightness value;
4th step, display chip reads described backlight brightness values, and the backlight driving unit controlling described display adjusts described display backlight brightness.
Preferably, described display is connected by MHL data line with described external unit, in described 2nd step, described ambient brightness value is sent to described display end by cbus with ddcci data layout.
Preferably, described 4th step is specially: display chip reads described backlight brightness values, described backlight brightness values is stored in buffer simultaneously, and the backlight driving unit controlling described display adjusts described display backlight brightness.
Preferably, in the 3rd step, described according to described ambient brightness value, calculate the backlight brightness values matched with described ambient brightness value, be specially, according to the illuminometer of described display end, search the register value of described control backlight illumination corresponding to described ambient brightness value.
Preferably, in the 3rd step, according to described ambient brightness value, before calculating the backlight brightness values matched with described ambient brightness value, also comprise the step of display end by checking summation inspection code (checksum) field of described ambient brightness value to judge described ambient brightness value correctness.
Present invention also offers a kind of display brightness regulating system, comprising: external unit, display end,
Described external unit is connected with described display end, and described external unit comprises luminance sensor and data transmission unit, and described luminance sensor is for gathering ambient brightness data; Described data transmission unit is used for the described ambient brightness data according to collection, and the ambient brightness value that described external unit calculates is sent to display end;
Described display end, comprises data receipt unit and computing unit, display chip, backlight driving unit, and described data receipt unit is for receiving described ambient brightness value; Described computing unit is used for according to described ambient brightness value, calculates the backlight brightness values matched with described ambient brightness value; Described display chip is used for display chip and reads described backlight brightness values, and the backlight driving unit controlling described display adjusts described display backlight brightness; Described backlight driving unit is for adjusting described display backlight brightness.
Preferably, described display is connected by MHL data line with described external unit, and ambient brightness value is sent to described display end by cbus with ddcci data layout by described data transmission unit.
Preferably, described computing unit specifically for, according to the illuminometer of described display end, search the register value of described control backlight illumination corresponding to described ambient brightness value.
Preferably, described display end, also comprises data detection unit, for judging described ambient brightness value correctness by summation inspection code (checksum) field of the described ambient brightness value of inspection.
Beneficial effect of the present invention is, be connected with display by external unit, thus make display the brightness of self can be regulated to change according to the ambient brightness data of external unit collection, energy-conservation and while providing comfortable visual experience, luminance sensor and peripheral circuit need not be increased over the display, save cost, reduce design difficulty.
Accompanying drawing explanation
Fig. 1 is method flow diagram provided by the invention;
Fig. 2 is system construction drawing provided by the invention;
Fig. 3 is the method flow diagram of embodiment provided by the invention.
Embodiment
In order to make object of the present invention, technical scheme and beneficial effect clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be understood to specific embodiment described herein only in order to explain the present invention, be not limited to protection scope of the present invention.
As Fig. 1, the invention provides a kind of display brightness control method, comprise the steps:
Step S101, the luminance sensor of external unit gathers ambient brightness data; ;
In the present invention, external unit comprises mobile phone, panel computer etc., these equipment can along with the change of the change adjusting screen brightness of external environment brightness by brightness sensor function, this function can specifically adopt following steps to realize: brightness sensor perception surrounding brightness is also sent to device processes unit, is generally CPU; Processing unit obtains the data that brightness sensor sends, and calculates the current ambient brightness value that should set of external unit screen, and according to the ambient brightness value calculated, external unit performs and changes current screen brightness.
Step S102, according to the described ambient brightness data gathered, calculates ambient brightness value and is sent to display end;
In this step, described ambient brightness value refers to the ambient brightness value that external unit should set according to the external unit screen that the surrounding brightness data gathered calculate.External unit also comprises data sending function module, calculate ambient brightness value in step S101 after, described ambient brightness value is sent to described display end by control bus (cbus) for DDC/instruction interface (ddcci) data layout of remote diagnosis and control.As shown in Figure 4, external unit end and display end carry out data transmission to the data layout of described ddcci, adopt following step:
1. external unit execution is made a decision and is obtained the control of Cbus
2. the initial control bag of external unit transmission frame, to create a DDC frame
3. external unit sends DDC device address packet to display end, and this packet Read position resets.
4. display end sends corresponding control bag to external unit
5. external unit sends the initial data of DDC to display end
6. display end sends corresponding control bag to external unit
7. external unit sends bit data as packet to display end
8. display end sends corresponding control bag to external unit
9., when external unit is wanted to send more data position to display end time, the 7th step and the 8th step repeat
10. external unit sends and stops controlling bag to display end
11. external unit transmission frame finishing control bags, to display end, terminate the transmission of a DDC frame.
Peripheral equipment of the present invention need support mobile terminal high-definition audio and video standard interface (MHL), and external unit uses special patchcord to carry out data transmission by HDMI (High Definition Multimedia Interface) (hdmi) interface of data port (micro-sub) interface and described display end.
Step S103, according to described ambient brightness value, calculate with described ambient brightness value match backlight brightness values.
Step S104, display chip reads described backlight brightness values, and the backlight driving unit controlling described display adjusts described display backlight brightness.
In the present invention, the illuminometer that the control panel (panel) of every platform display is corresponding different, after receiving ambient brightness value again, corresponding brightness register parameter can be found from illuminometer, be written in scaler, ensure that every platform display all can have the brightness change being adapted to self panel, there will not be image quality to suddenly change, ensure the visual experience of user.In order to ensure the data correctness that display receives, after the step receiving described ambient brightness value, before described ambient brightness value is converted in display chip the register value controlling backlight illumination by display end, also comprise display end by checking the checksum field of the described ambient brightness value received, judge the step of the described ambient brightness value correctness received, if incorrect, then abandon these data, again obtain.
As shown in Figure 2, correspondingly, present invention also offers a kind of display brightness regulating system, comprising: external unit 201, display end 202,
Described external unit is connected with described display end, and described external unit comprises luminance sensor and data transmission unit, and described luminance sensor is for gathering ambient brightness data; Described data transmission unit is used for the described ambient brightness data according to collection, and the ambient brightness value that described external unit calculates is sent to display end;
Described display end, comprises data receipt unit and computing unit, display chip, backlight driving unit, and described data receipt unit is for receiving described ambient brightness value; Described computing unit is used for according to described ambient brightness value, calculates the backlight brightness values matched with described ambient brightness value; Described display chip is used for display chip and reads described backlight brightness values, and the backlight driving unit controlling described display adjusts described display backlight brightness; Described backlight driving unit is for adjusting described display backlight brightness.
Present invention also offers a kind of display, described display can all functions of display end to implement the above described method and in system.
As shown in Figure 3, the embodiment of method provided by the present invention, comprises the following steps:
Step S301, judges whether starting hand-set brightness sensor function in OSD; If not, jump to step S302, if so, jump to step S303.
Mobile phone brightness sensor function herein refers to the function synchronous with mobile phone brightness sensor.Can at the upper newly-increased option (MobileLightSensor) of display menu (OSD), user is undertaken opening or closing operation to brightness sensor synchronizing function by this option.If user have selected open this function, screen can point out user to open the brightness control function of mobile phone;
Step S302, mobile phone sensor function does not start.
Step S303, judges whether mobile phone opens sensor function; If so, jump to step S304, if so, jump to step S305.
Step S304, mobile phone sensor function does not start.
The brightness of step S305, mobile phone brightness sensor surrounding being monitored.
Step S306, computing environment brightness value changes screen luminance of mobile phone and sends ambient brightness value to display end by DDCCI.
Step S307, display obtains DDCCI order;
Step S308, changes display brightness.
In sum, a kind of display brightness control method provided by the invention, system and display, be reacted on display by mobile phone brilliant synchrotron, improves user's comfort; Achieve display brightness with surrounding environment change, save the energy; The friendly interface menu that function opens and closes for display synchronous mobile phone brightness sensor function setting, reminding user operates on request, is simple and easy to use.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. a display brightness control method, is characterized in that, comprising:
1st step, the luminance sensor of external unit gathers ambient brightness data;
2nd step, according to the described ambient brightness data gathered, calculates ambient brightness value and is sent to display end;
3rd step, display end judges described ambient brightness value correctness by checking summation inspection code (checksum) field of described ambient brightness value, if correct, according to described ambient brightness value, calculate the backlight brightness values matched with described ambient brightness value; If incorrect, abandon this ambient brightness value;
4th step, display chip reads described backlight brightness values, described backlight brightness values is stored in buffer, and the backlight driving unit controlling described display adjusts described display backlight brightness.
2. display brightness control method according to claim 1, it is characterized in that, described display is connected by MHL data line with described external unit, in described 2nd step, described ambient brightness value is sent to described display end by cbus with ddcci data layout.
3. display brightness control method according to claim 2, it is characterized in that, in 3rd step, described according to described ambient brightness value, calculate the backlight brightness values matched with described ambient brightness value, be specially, according to the illuminometer of described display end, search the register value of control backlight illumination corresponding to described ambient brightness value.
4. a display brightness regulating system, it is characterized in that, comprising: external unit, display end, described external unit is connected with described display end, described external unit comprises luminance sensor and data transmission unit, and described luminance sensor is for gathering ambient brightness data; Described data transmission unit is used for the ambient brightness value that external unit calculates according to described ambient brightness data to be sent to display end;
Described display end, comprises data receipt unit and computing unit, display chip, backlight driving unit, and described data receipt unit is for receiving described ambient brightness value; Described computing unit is used for according to described ambient brightness value, calculates the backlight brightness values matched with described ambient brightness value; Described display chip is for reading described backlight brightness values, and the backlight driving unit controlling described display adjusts described display backlight brightness; Described backlight driving unit is for adjusting described display backlight brightness; Display end also comprises data detection unit, for judging described ambient brightness value correctness by summation inspection code (checksum) field of the described ambient brightness value of inspection.
5. display brightness regulating system according to claim 4, it is characterized in that, described display is connected by MHL data line with described external unit, and ambient brightness value is sent to described display end by cbus with ddcci data layout by described data transmission unit.
6. display brightness regulating system according to claim 4, is characterized in that, described computing unit specifically for, according to the illuminometer of described display end, search the register value of control backlight illumination corresponding to described ambient brightness value.
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| CN201310438465.0A CN103474036B (en) | 2013-09-24 | 2013-09-24 | Display brightness control method, system |
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| CN201310438465.0A CN103474036B (en) | 2013-09-24 | 2013-09-24 | Display brightness control method, system |
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| CN103474036B true CN103474036B (en) | 2016-01-13 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104902209A (en) * | 2014-03-05 | 2015-09-09 | 上海华虹集成电路有限责任公司 | Data transmission system between CBUS and MCU |
| EP3161611A1 (en) * | 2014-06-24 | 2017-05-03 | Google, Inc. | Controlling brightness of a remote display |
| CN105898542A (en) * | 2015-12-08 | 2016-08-24 | 乐视移动智能信息技术（北京）有限公司 | Display screen brightness adjustment and data transmission method, device and system |
| CN105609059B (en) * | 2016-02-26 | 2019-01-18 | 苏州佳世达电通有限公司 | The method of photosensitive display system and operation sense light display system |
| CN106710536A (en) * | 2017-03-10 | 2017-05-24 | 广东欧珀移动通信有限公司 | Method and device for adjusting luminance of display screen as well as terminal |
| CN110689949A (en) * | 2019-10-12 | 2020-01-14 | 奥斯泰科技(深圳)有限公司 | Method and system for recording radiation environment brightness |
| CN113596363A (en) * | 2020-04-30 | 2021-11-02 | 惠州视维新技术有限公司 | Method for automatically adjusting brightness of television and television |
| CN112908272A (en) * | 2021-01-22 | 2021-06-04 | 中汽创智科技有限公司 | Display screen brightness adjusting method and device and display screen |
| CN114486184B (en) * | 2021-12-27 | 2023-03-10 | 巴可(苏州)医疗科技有限公司 | Method for stably monitoring brightness of medical display for long time |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101145332A (en) * | 2006-09-14 | 2008-03-19 | 英华达（上海）科技有限公司 | Screen brightness regulating device and method for regulating electronic device screen brightness |
| CN101847380A (en) * | 2009-03-27 | 2010-09-29 | 比亚迪股份有限公司 | Liquid crystal display device for automatically adjusting luminance and display method thereof |
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2013
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101145332A (en) * | 2006-09-14 | 2008-03-19 | 英华达（上海）科技有限公司 | Screen brightness regulating device and method for regulating electronic device screen brightness |
| CN101847380A (en) * | 2009-03-27 | 2010-09-29 | 比亚迪股份有限公司 | Liquid crystal display device for automatically adjusting luminance and display method thereof |
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