CN105280147A - Display control method and control system - Google Patents
Display control method and control system Download PDFInfo
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- CN105280147A CN105280147A CN201510674003.8A CN201510674003A CN105280147A CN 105280147 A CN105280147 A CN 105280147A CN 201510674003 A CN201510674003 A CN 201510674003A CN 105280147 A CN105280147 A CN 105280147A
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- temperature
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Abstract
The invention discloses a display control method and a control system. The display control method comprises the steps that the temperature information of a display is acquired; according to the temperature information, whether the display needs temperature regulation is determined; and if the display needs temperature regulation, by changing the duty cycle of a pulse width modulation waveform, the backlight brightness of the display is regulated. According to the display control method and the control system, which are provided by the invention, the problems of high product cost and complex structure of heat dissipating of a liquid crystal display in the prior art are effectively solved.
Description
Technical field
The present invention relates to display technology field, in particular to a kind of control method and control system of display.
Background technology
Mostly industry control class liquid crystal display of the prior art is to reach according to constructional appearance design the object that heat radiation reduces display working temperature, such as, control display temperature by heat sink materials such as thermal greases, avoid display temperature too high.
During liquid crystal display operation, due to the long-time shinny heating of backlight cause display power supply and temperature of processor too high, heat radiation has two main shortcomings physically:
1) structure and material often causes complex structural designs, and material heat dispersion requires high, and design and mould can cause very large expense, greatly can improve production cost and design cost.
2) complicated structural design can cause very large impact to the circuit board signal of high integration, Signal transmissions may be caused unstable, cause unexpected generation.
Summary of the invention
A kind of control method and control system of display is provided, to solve liquid crystal display high, baroque problem of cost of products when processing heat radiation in prior art in the embodiment of the present invention.
According to an aspect of the present invention, the invention provides a kind of control method of display, comprise the following steps: the temperature information obtaining display; According to temperature information, judge that display is the need of carrying out temperature adjustment; If so, then the dutycycle by changing pulse width modulated waveform regulates the backlight illumination of display.
Further, temperature information at least comprise following one or more: the power source temperature of display; The temperature of processor of display.
Further, judging that display comprises the following steps in thermoregulator step the need of carrying out: judge whether power source temperature and/or temperature of processor are in preset range; If so, then judge that display needs to carry out temperature adjustment; If not, then judge that display does not need to carry out temperature adjustment.
Further, obtain in the step of the temperature information of display, comprise the following steps: detect the simulating signal obtaining power source temperature and/or temperature of processor; According to simulating signal, be converted to digital signal.
According to a further aspect in the invention, provide a kind of control system of display, comprising: temperature sensor, for the part temperatures of detection display device; Processor, is electrically connected with temperature sensor, and processor is electrically connected with the backlight of display; Processor is used for according to temperature information, judges that display is the need of carrying out temperature adjustment; If so, then the dutycycle by changing pulse width modulated waveform regulates the backlight illumination of display.
Further, the quantity of temperature sensor is multiple, and temperature sensor is separately positioned on the position of source of display and the processor position of display, and temperature sensor is used for the power source temperature of detection display device and the temperature of processor of display.
Further, processor also for: judge whether power source temperature and/or temperature of processor are in preset range; If so, then judge that display needs to carry out temperature adjustment; If not, then judge that display does not need to carry out temperature adjustment.
Further, also comprise A/D converter, A/D converter is connected between temperature sensor and processor.
Apply technical scheme of the present invention, by taking the temperature information (as: temperature of Focusing on components of display, comprise temperature of processor, power source temperature, screen temperature etc.), processor for display judges, judge that display is the need of carrying out temperature adjustment, when needs regulate temperature, the input of the backlight of adjustment display, the dutycycle of i.e. pulse-length modulation (PWM) waveform, like this can adjusting backlight luminance, when after reduction backlight illumination a period of time, the temperature as power supply and processor just can be reduced.This control method solves heating problem during display work, and do not need extra heat radiation structure design and heat sink material, greatly reduce design cost and production cost, structure can be made significantly to simplify simultaneously, little to the signal disturbing of high integration wiring board, ensure the quality of products and safety.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the control method of the display of the embodiment of the present invention.
Fig. 2 is the schematic diagram of the control system of the display of the embodiment of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail, but not as a limitation of the invention.
Shown in Figure 1, according to embodiments of the invention, the control method of display comprises the following steps:
Step S10: the temperature information obtaining display;
Step S20: according to temperature information, judges that display is the need of carrying out temperature adjustment;
If so, then step S30 is performed: the backlight illumination being regulated display by the dutycycle changing pulse width modulated waveform.
By taking the temperature information (as: temperature of Focusing on components of display, comprise temperature of processor, power source temperature, screen temperature etc.), processor for display judges, judge that display is the need of carrying out temperature adjustment, when needs regulate temperature, the input of the backlight of adjustment display, the i.e. dutycycle of pulse width modulated waveform (hereinafter referred to as pwm pulse waveform), like this can adjusting backlight luminance, when after reduction backlight illumination a period of time, the temperature as power supply and processor just can be reduced.By pwm pulse waveform adjustment backlight illumination, it is generally the boosting plate that the pwm pulse waveform directly producing a 100-250Hz by processor delivers to backlight, the boosting plate output switch frequency controlling backlight is gone to adjust electric current, to adjust the brightness of backlight lamp tube by the dutycycle controlling this pwm pulse waveform.This magnitude of voltage has several as follows: 0 ~ 3V, 0 ~ 3.3V, 0 ~ 5V.
This control method solves heating problem during display work, and do not need extra heat radiation structure design and heat sink material, greatly reduce design cost and production cost, structure can be made significantly to simplify simultaneously, little to the signal disturbing of high integration wiring board, ensure the quality of products and safety.
Further preferably, temperature information at least comprise following one or more: the power source temperature of display; The temperature of processor of display.In the present embodiment, temperature information is the power source temperature of display and the temperature of processor two kinds of display.
In step S20, namely judge that display, specifically comprises the following steps in thermoregulator step the need of carrying out:
Judge whether power source temperature and/or temperature of processor are in preset range; If so, then judge that display needs to carry out temperature adjustment; If not, then judge that display does not need to carry out temperature adjustment.
It should be noted that, in the present embodiment, because temperature information is the power source temperature of display and the temperature of processor two kinds of display, so need to judge whether power source temperature and temperature of processor are in preset range, there are in preset range two value ranges, two value ranges corresponding power temperature and temperature of processor respectively, power source temperature and temperature of processor two value ranges respectively at correspondence are needed to judge, these two value ranges can be according to specific needs, select different numerical ranges, it can certainly be identical numerical range, numerical range can artificially set, no longer provide concrete numerical value herein.When judging power source temperature and temperature of processor, if power source temperature or temperature of processor have one or two to be in corresponding value range, so then judge that this power source temperature and temperature of processor are in preset range.Certainly, in some other unshowned embodiment, if only detect in power source temperature or temperature of processor a kind of, so preset range is a value range, this determination methods and above-mentioned determination methods similar, repeat no more herein.
Preferably, in step slo, namely obtain in the step of the temperature information of display, specifically comprise the following steps:
Detect the simulating signal obtaining power source temperature and/or temperature of processor;
According to simulating signal, be converted to digital signal.
Because the power source temperature that detected by sensor and temperature of processor are all simulating signals, need to be changed by A/D converter, processor just can be sent to carry out identifying and carry out matching treatment.
Present invention also offers a kind of control system of display, see Fig. 2, the control system of display has temperature sensor 10 and processor 20.Temperature sensor 10 is for the part temperatures of detection display device, and processor 20 is electrically connected with temperature sensor 10, and processor 20 is electrically connected with the backlight 40 of display.Processor 20, for according to temperature information, judges that display is the need of carrying out temperature adjustment; If so, then the dutycycle by changing pulse width modulated waveform regulates the backlight illumination of display backlight 40.
Temperature information (as: the temperature of Focusing on components of display is taked by temperature sensor 10, comprise temperature of processor, power source temperature, screen temperature etc.), processor 20 for display judges, judge that display is the need of carrying out temperature adjustment, when needs regulate temperature, the input of the backlight 40 of adjustment display, the dutycycle of i.e. pulse-length modulation (PWM) waveform, like this can adjusting backlight luminance, when after reduction backlight illumination a period of time, the temperature as power supply and processor just can be reduced.This control system solves heating problem during display work, and do not need extra heat radiation structure design and heat sink material, greatly reduce design cost and production cost, structure can be made significantly to simplify simultaneously, little to the signal disturbing of high integration wiring board, ensure the quality of products and safety.
The quantity of temperature sensor 10 is multiple, temperature sensor 10 is separately positioned on the position of source of display and processor 20 position of display, temperature sensor detects power source temperature by paper tinsel thermal resistance, the power source temperature of temperature sensor 10 for detection display device and processor 20 temperature of display.
Processor 20 is also for judging whether power source temperature and/or processor 20 temperature are in preset range; If so, then judge that display needs to carry out temperature adjustment; If not, then judge that display does not need to carry out temperature adjustment.
Because temperature information is the power source temperature of display and the temperature of processor two kinds of display, so need to judge whether power source temperature and temperature of processor are in preset range, in the rule prestored in processor 20, there are in preset range two value ranges, two value ranges corresponding power temperature and temperature of processor respectively, power source temperature and temperature of processor two value ranges respectively at correspondence are needed to judge, these two value ranges can be according to specific needs, select different numerical ranges, it can certainly be identical numerical range, numerical range can artificially set, no longer provide concrete numerical value herein.When judging power source temperature and temperature of processor, if power source temperature or temperature of processor have one or two to be in corresponding value range, so then judge that this power source temperature and temperature of processor are in preset range.When temperature sensor only detects power source temperature or temperature of processor wherein a kind of, the value range of preset range is one, its decision rule and above-mentioned decision rule similar, repeat no more herein.
The control system of this display is also provided with A/D converter 30, A/D converter 30 is connected between temperature sensor 10 and processor 20, temperature sensor 10 is electrically connected with processor 20 by A/D converter 30, the temperature analog signal of detection is first sent to A/D converter 30 by temperature sensor 10, then simulating signal is converted into digital signal by A/D converter 30, then sends to processor 20 to carry out matching treatment.
Certainly, be more than the preferred embodiment of the present invention.It should be pointed out that for those skilled in the art, under the prerequisite not departing from its general principles, can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (8)
1. a control method for display, is characterized in that, comprises the following steps:
Obtain the temperature information of described display;
According to described temperature information, judge that described display is the need of carrying out temperature adjustment;
If so, then the dutycycle by changing pulse width modulated waveform regulates the backlight illumination of described display.
2. control method according to claim 1, is characterized in that, described temperature information at least comprise following one or more:
The power source temperature of described display;
The temperature of processor of described display.
3. control method according to claim 2, is characterized in that, comprises the following steps the need of carrying out at the described display of described judgement in thermoregulator step:
Judge whether described power source temperature and/or described temperature of processor are in preset range;
If so, then judge that described display needs to carry out temperature adjustment;
If not, then judge that described display does not need to carry out temperature adjustment.
4. control method according to claim 2, is characterized in that, in the step of the temperature information of the described display of described acquisition, comprises the following steps:
Detect the simulating signal obtaining described power source temperature and/or described temperature of processor;
According to described simulating signal, be converted to digital signal.
5. a control system for display, is characterized in that, comprising:
Temperature sensor, for detecting the part temperatures of described display;
Processor, is electrically connected with described temperature sensor, and described processor is electrically connected with the backlight of described display;
Described processor is used for according to described temperature information, judges that described display is the need of carrying out temperature adjustment; If so, then the dutycycle by changing pulse width modulated waveform regulates the backlight illumination of described display.
6. control system according to claim 5, it is characterized in that, the quantity of described temperature sensor is multiple, described temperature sensor is separately positioned on the position of source of described display and the processor position of described display, and described temperature sensor is for the temperature of processor of the power source temperature and described display that detect described display.
7. control system according to claim 6, is characterized in that, described processor also for:
Judge whether described power source temperature and/or described temperature of processor are in preset range;
If so, then judge that described display needs to carry out temperature adjustment;
If not, then judge that described display does not need to carry out temperature adjustment.
8. control system according to claim 5, is characterized in that, also comprises A/D converter, and described A/D converter is connected between described temperature sensor and described processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510674003.8A CN105280147A (en) | 2015-10-15 | 2015-10-15 | Display control method and control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510674003.8A CN105280147A (en) | 2015-10-15 | 2015-10-15 | Display control method and control system |
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| CN105280147A true CN105280147A (en) | 2016-01-27 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105913812A (en) * | 2016-06-30 | 2016-08-31 | 宇龙计算机通信科技(深圳)有限公司 | Method and device for adjusting LCD backlight brightness of terminal as well as terminal |
| CN111640407A (en) * | 2020-05-12 | 2020-09-08 | 广州视源电子科技股份有限公司 | Screen brightness adjusting method and device, storage medium and electronic equipment |
| CN112382240A (en) * | 2020-10-30 | 2021-02-19 | Oppo广东移动通信有限公司 | Backlight control method and device, electronic equipment and readable storage medium |
| 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 |
| CN117496920A (en) * | 2023-12-27 | 2024-02-02 | 成都万创科技股份有限公司 | High-brightness multimedia display device based on HDBASE-T multi-input |
| CN117496920B (en) * | 2023-12-27 | 2024-04-16 | 成都万创科技股份有限公司 | HDBASE-T multi-input-based highlight multimedia display equipment |
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| JPH07248734A (en) * | 1994-03-11 | 1995-09-26 | Yazaki Corp | Luminance controller of on-vehicle display device |
| JPH09127487A (en) * | 1995-11-02 | 1997-05-16 | Calsonic Corp | Temperature controller of on board liquid crystal display device |
| JP2006276784A (en) * | 2005-03-30 | 2006-10-12 | Iiyama Corp | Liquid crystal display device |
| CN101609657A (en) * | 2009-07-23 | 2009-12-23 | 三一重工股份有限公司 | A kind of LCD backlight control method and device |
| CN102968961A (en) * | 2012-11-15 | 2013-03-13 | 京东方科技集团股份有限公司 | Control method, backlight control circuit, liquid crystal display (LCD) panel and LCD |
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Patent Citations (5)
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| JPH07248734A (en) * | 1994-03-11 | 1995-09-26 | Yazaki Corp | Luminance controller of on-vehicle display device |
| JPH09127487A (en) * | 1995-11-02 | 1997-05-16 | Calsonic Corp | Temperature controller of on board liquid crystal display device |
| JP2006276784A (en) * | 2005-03-30 | 2006-10-12 | Iiyama Corp | Liquid crystal display device |
| CN101609657A (en) * | 2009-07-23 | 2009-12-23 | 三一重工股份有限公司 | A kind of LCD backlight control method and device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105913812A (en) * | 2016-06-30 | 2016-08-31 | 宇龙计算机通信科技(深圳)有限公司 | Method and device for adjusting LCD backlight brightness of terminal as well as terminal |
| CN111640407A (en) * | 2020-05-12 | 2020-09-08 | 广州视源电子科技股份有限公司 | Screen brightness adjusting method and device, storage medium and electronic equipment |
| CN112382240A (en) * | 2020-10-30 | 2021-02-19 | Oppo广东移动通信有限公司 | Backlight control method and device, electronic equipment and readable storage medium |
| 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 |
| CN117496920A (en) * | 2023-12-27 | 2024-02-02 | 成都万创科技股份有限公司 | High-brightness multimedia display device based on HDBASE-T multi-input |
| CN117496920B (en) * | 2023-12-27 | 2024-04-16 | 成都万创科技股份有限公司 | HDBASE-T multi-input-based highlight multimedia display equipment |
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Application publication date: 20160127 |
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