CN105845102A - Environment-based screen brightness adjusting circuit and display screen - Google Patents
Environment-based screen brightness adjusting circuit and display screen Download PDFInfo
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- CN105845102A CN105845102A CN201610345598.7A CN201610345598A CN105845102A CN 105845102 A CN105845102 A CN 105845102A CN 201610345598 A CN201610345598 A CN 201610345598A CN 105845102 A CN105845102 A CN 105845102A
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- operational amplifier
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/10—Intensity circuits
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- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
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- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention, which belongs to the technical field, especially relates to an environment-based screen brightness adjusting circuit and a display screen. According to the embodiment of the invention, a digital photosensitive module detects natural light and converts the natural light information into a light brightness value; a control module outputs a screen backlight brightness adjusting signal according to the light brightness value, thereby adjusting the screen backlight brightens of a display device; and the brightness of the display device is adjusted automatically with the environmental light change. Therefore, strong light simulation the eyes in an environment with dark light can be avoided; and because the backlight brightness is enhanced in a dark light environment, information displayed on the display device screen can be distinguished clearly by the human eyes.
Description
Technical field
The invention belongs to display screen technology field, particularly relate to a kind of according to environment screen intensity adjust circuit and
Display screen.
Background technology
Display is also generally referred to as monitor.Display is belonging to the I/O equipment of computer, i.e. input and output set
Standby, it is a kind of to be shown on screen be re-reflected into people by certain e-file by specific transmission equipment
The show tools of eye.
Display is widely used in every field, the most closely uses display, and display backlight is thrown
The light of injection is too strong, easily causes eye strain.Particularly game enthusiasts, at dark cafe environment or night
Between turn off the light after, if do not adjusted display backlight brightness, the easy exciting eye of high light is fine, and the time one is long causes eye
Uncomfortable or Shiliming-drug for enhancing vision shows decline problem.
Summary of the invention
The purpose of the embodiment of the present invention is that providing a kind of adjusts circuit according to environment screen intensity, it is intended to solve
Present display cannot adjust the display brightness adapting to human eye according to external environment light brightness, cause people
The problem of eye injury.
The embodiment of the present invention is achieved in that a kind of according to environment screen intensity adjustment circuit, described foundation
Environment screen intensity adjusts circuit and includes:
Detection available light is strong and weak, and is converted into the digital illuminant module of light luminance value；And
It is connected with described numeral illuminant module, adjusts letter according to described light luminance value output screen backlight illumination
Number control module.
In said structure, described foundation environment screen intensity adjusts circuit and also includes:
It is connected with described control module, adjusts the screen backlight brightness adjusting section of screen backlight brightness.
In said structure, described numeral illuminant module includes:
Light sensitive diode D1, light sensitive diode D2, electric capacity C1, electric capacity C2, operational amplifier U1, fortune
Calculate amplifier U2, analog-digital converter U3, analog-digital converter U4 sum counter U5；
Described light sensitive diode D1 is connected between inverting input and the ground of described operational amplifier U1, institute
Stating the in-phase input end ground connection of operational amplifier U1, the output of described operational amplifier U1 terminates described modulus
The input of transducer U3, described electric capacity C1 be connected to the inverting input of described operational amplifier U1 with
Between outfan, described light sensitive diode D2 is connected to inverting input and the ground of described operational amplifier U2
Between, the in-phase input end ground connection of described operational amplifier U2, the output termination of described operational amplifier U2
The input of described analog-digital converter U4, described electric capacity C2 is connected to the anti-phase of described operational amplifier U2
Between input and outfan, the outfan of described analog-digital converter U3 is defeated with described analog-digital converter U4's
Going out end and connect the input of described enumerator U5 together, the output of described enumerator U5 terminates described control module.
In said structure, described control module uses SCALAR to process chip U6.
The another object of the embodiment of the present invention is to provide a kind of display screen, adjusts including according to environment screen intensity
Whole circuit, described foundation environment screen intensity adjusts circuit and includes:
Detection available light is strong and weak, and is converted into the digital illuminant module of light luminance value；And
It is connected with described numeral illuminant module, adjusts letter according to described light luminance value output screen backlight illumination
Number control module.
In said structure, described foundation environment screen intensity adjusts circuit and also includes:
It is connected with described control module, adjusts the screen backlight brightness adjusting section of screen backlight brightness.
In said structure, described numeral illuminant module includes:
Light sensitive diode D1, light sensitive diode D2, electric capacity C1, electric capacity C2, operational amplifier U1, fortune
Calculate amplifier U2, analog-digital converter U3, analog-digital converter U4 sum counter U5；
Described light sensitive diode D1 is connected between inverting input and the ground of described operational amplifier U1, institute
Stating the in-phase input end ground connection of operational amplifier U1, the output of described operational amplifier U1 terminates described modulus
The input of transducer U3, described electric capacity C1 be connected to the inverting input of described operational amplifier U1 with
Between outfan, described light sensitive diode D2 is connected to inverting input and the ground of described operational amplifier U2
Between, the in-phase input end ground connection of described operational amplifier U2, the output termination of described operational amplifier U2
The input of described analog-digital converter U4, described electric capacity C2 is connected to the anti-phase of described operational amplifier U2
Between input and outfan, the outfan of described analog-digital converter U3 is defeated with described analog-digital converter U4's
Going out end and connect the input of described enumerator U5 together, the output of described enumerator U5 terminates described control module.
In said structure, described control module uses SCALAR to process chip U6.
In embodiments of the present invention, numeral illuminant module detection available light is strong and weak, and is converted into light luminance
Value, control module adjusts signal according to light luminance value output screen backlight illumination, thus adjusts display screen
Curtain backlight illumination, display brightness adjusts, so under the very dark environment of light automatically along with ambient light change
Human eye can be avoided to be stimulated by high light, under the extremely strong environment of lighting level, increase backlight illumination more clearly divide by human eye
Distinguish the information that indicator screen shows.
Accompanying drawing explanation
Fig. 1 is the function structure chart adjusting circuit according to environment screen intensity that the embodiment of the present invention provides；
Fig. 2 is the circuit structure diagram adjusting circuit according to environment screen intensity that the embodiment of the present invention provides.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and reality
Execute example, the present invention is further elaborated.Only should be appreciated that specific embodiment described herein
Only in order to explain the present invention, it is not intended to limit the present invention.
Fig. 1 shows the modular structure adjusting circuit according to environment screen intensity that the embodiment of the present invention provides,
For convenience of description, illustrate only the part relevant to the embodiment of the present invention.
A kind of according to environment screen intensity adjustment circuit, described foundation environment screen intensity adjusts circuit and includes:
Detection available light is strong and weak, and is converted into the digital illuminant module 1 of light luminance value；And
It is connected 1 with described numeral illuminant module, adjusts according to described light luminance value output screen backlight illumination
The control module 2 of signal.
As one embodiment of the invention, described foundation environment screen intensity adjusts circuit and also includes:
It is connected with described control module 2, adjusts the screen backlight brightness adjusting section 3 of screen backlight brightness.
As one embodiment of the invention, described numeral illuminant module 1 includes:
Light sensitive diode D1, light sensitive diode D2, electric capacity C1, electric capacity C2, operational amplifier U1, fortune
Calculate amplifier U2, analog-digital converter U3, analog-digital converter U4 sum counter U5；
Described light sensitive diode D1 is connected between inverting input and the ground of described operational amplifier U1, institute
Stating the in-phase input end ground connection of operational amplifier U1, the output of described operational amplifier U1 terminates described modulus
The input of transducer U3, described electric capacity C1 be connected to the inverting input of described operational amplifier U1 with
Between outfan, described light sensitive diode D2 is connected to inverting input and the ground of described operational amplifier U2
Between, the in-phase input end ground connection of described operational amplifier U2, the output termination of described operational amplifier U2
The input of described analog-digital converter U4, described electric capacity C2 is connected to the anti-phase of described operational amplifier U2
Between input and outfan, the outfan of described analog-digital converter U3 is defeated with described analog-digital converter U4's
Going out end and connect the input of described enumerator U5 together, the output of described enumerator U5 terminates described control module
2。
As one embodiment of the invention, described control module 2 uses SCALAR to process chip U6.
The screen backlight brightness adjusting signal of control module 2 output is backlight PWM dimming duty cycle signal.
SCALAR processes chip U6 and pre-builds light luminance value and backlight PWM dimming duty cycle signal
Mapping table, when numeral illuminant module 1 detect that ambient light change, pass to SCALAR process chip
The value of U6 changes the most therewith, and SCALAR processes the value that chip U6 sampling transmission comes, and inquires about in mapping table
Scope (light is very dark or during high light, abandons the numerical value that transmission comes), meets set point number when inquiring
During value, change backlight PWM dimming duty cycle signal the most immediately, thus reach to adjust indicator screen backlight
Brightness purpose.
The embodiment of the present invention also provides for a kind of display screen, adjusts circuit including according to environment screen intensity, described
Adjust circuit according to environment screen intensity to include:
Detection available light is strong and weak, and is converted into the digital illuminant module 1 of light luminance value；And
It is connected 1 with described numeral illuminant module, adjusts according to described light luminance value output screen backlight illumination
The control module 2 of signal.
As one embodiment of the invention, described foundation environment screen intensity adjusts circuit and also includes:
It is connected with described control module 2, adjusts the screen backlight brightness adjusting section 3 of screen backlight brightness.
As one embodiment of the invention, described numeral illuminant module 1 includes:
Light sensitive diode D1, light sensitive diode D2, electric capacity C1, electric capacity C2, operational amplifier U1, fortune
Calculate amplifier U2, analog-digital converter U3, analog-digital converter U4 sum counter U5；
Described light sensitive diode D1 is connected between inverting input and the ground of described operational amplifier U1, institute
Stating the in-phase input end ground connection of operational amplifier U1, the output of described operational amplifier U1 terminates described modulus
The input of transducer U3, described electric capacity C1 be connected to the inverting input of described operational amplifier U1 with
Between outfan, described light sensitive diode D2 is connected to inverting input and the ground of described operational amplifier U2
Between, the in-phase input end ground connection of described operational amplifier U2, the output termination of described operational amplifier U2
The input of described analog-digital converter U4, described electric capacity C2 is connected to the anti-phase of described operational amplifier U2
Between input and outfan, the outfan of described analog-digital converter U3 is defeated with described analog-digital converter U4's
Going out end and connect the input of described enumerator U5 together, the output of described enumerator U5 terminates described control module.
As one embodiment of the invention, described control module 2 uses SCALAR to process chip U6.
The screen backlight brightness adjusting signal of control module 2 output is backlight PWM dimming duty cycle signal.
In embodiments of the present invention, numeral illuminant module detection available light is strong and weak, and is converted into light luminance
Value, control module adjusts signal according to light luminance value output screen backlight illumination, thus adjusts display screen
Curtain backlight illumination, display brightness adjusts, so under the very dark environment of light automatically along with ambient light change
Human eye can be avoided to be stimulated by high light, under the extremely strong environment of lighting level, increase backlight illumination more clearly divide by human eye
Distinguish the information that indicator screen shows.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this
Any amendment, equivalent and the improvement etc. made within bright spirit and principle, should be included in the present invention
Protection domain within.
Claims (8)
1. one kind adjusts circuit according to environment screen intensity, it is characterised in that described according to environment screen intensity
Adjustment circuit includes:
Detection available light is strong and weak, and is converted into the digital illuminant module of light luminance value；And
It is connected with described numeral illuminant module, adjusts letter according to described light luminance value output screen backlight illumination
Number control module.
2. as claimed in claim 1 adjust circuit according to environment screen intensity, it is characterised in that described depend on
Adjust circuit according to environment screen intensity also to include:
It is connected with described control module, adjusts the screen backlight brightness adjusting section of screen backlight brightness.
3. as claimed in claim 2 according to environment screen intensity adjustment circuit, it is characterised in that described number
Word illuminant module includes:
Light sensitive diode D1, light sensitive diode D2, electric capacity C1, electric capacity C2, operational amplifier U1, fortune
Calculate amplifier U2, analog-digital converter U3, analog-digital converter U4 sum counter U5；
Described light sensitive diode D1 is connected between inverting input and the ground of described operational amplifier U1, institute
Stating the in-phase input end ground connection of operational amplifier U1, the output of described operational amplifier U1 terminates described modulus
The input of transducer U3, described electric capacity C1 be connected to the inverting input of described operational amplifier U1 with
Between outfan, described light sensitive diode D2 is connected to inverting input and the ground of described operational amplifier U2
Between, the in-phase input end ground connection of described operational amplifier U2, the output termination of described operational amplifier U2
The input of described analog-digital converter U4, described electric capacity C2 is connected to the anti-phase of described operational amplifier U2
Between input and outfan, the outfan of described analog-digital converter U3 is defeated with described analog-digital converter U4's
Going out end and connect the input of described enumerator U5 together, the output of described enumerator U5 terminates described control module.
4. as claimed in claim 3 according to environment screen intensity adjustment circuit, it is characterised in that described control
Molding block uses SCALAR to process chip U6.
5. a display screen, it is characterised in that include adjusting circuit, described foundation according to environment screen intensity
Environment screen intensity adjusts circuit and includes:
Detection available light is strong and weak, and is converted into the digital illuminant module of light luminance value；And
It is connected with described numeral illuminant module, adjusts letter according to described light luminance value output screen backlight illumination
Number control module.
6. display screen as claimed in claim 5, it is characterised in that described according to the adjustment of environment screen intensity
Circuit also includes:
It is connected with described control module, adjusts the screen backlight brightness adjusting section of screen backlight brightness.
7. display screen as claimed in claim 6, it is characterised in that described numeral illuminant module includes:
Light sensitive diode D1, light sensitive diode D2, electric capacity C1, electric capacity C2, operational amplifier U1, fortune
Calculate amplifier U2, analog-digital converter U3, analog-digital converter U4 sum counter U5；
Described light sensitive diode D1 is connected between inverting input and the ground of described operational amplifier U1, institute
Stating the in-phase input end ground connection of operational amplifier U1, the output of described operational amplifier U1 terminates described modulus
The input of transducer U3, described electric capacity C1 be connected to the inverting input of described operational amplifier U1 with
Between outfan, described light sensitive diode D2 is connected to inverting input and the ground of described operational amplifier U2
Between, the in-phase input end ground connection of described operational amplifier U2, the output termination of described operational amplifier U2
The input of described analog-digital converter U4, described electric capacity C2 is connected to the anti-phase of described operational amplifier U2
Between input and outfan, the outfan of described analog-digital converter U3 is defeated with described analog-digital converter U4's
Going out end and connect the input of described enumerator U5 together, the output of described enumerator U5 terminates described control module.
8. display screen as claimed in claim 7, it is characterised in that described control module uses SCALAR
Process chip U6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610345598.7A CN105845102A (en) | 2016-05-19 | 2016-05-19 | Environment-based screen brightness adjusting circuit and display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610345598.7A CN105845102A (en) | 2016-05-19 | 2016-05-19 | Environment-based screen brightness adjusting circuit and display screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105845102A true CN105845102A (en) | 2016-08-10 |
Family
ID=56594066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610345598.7A Pending CN105845102A (en) | 2016-05-19 | 2016-05-19 | Environment-based screen brightness adjusting circuit and display screen |
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| CN (1) | CN105845102A (en) |
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| CN106531815A (en) * | 2016-09-30 | 2017-03-22 | 深圳市磊立捷光电有限公司 | Visible light sensor |
| CN108281103A (en) * | 2017-01-06 | 2018-07-13 | 昆山国显光电有限公司 | Show the brightness control method and device of equipment |
| CN108317489A (en) * | 2017-12-24 | 2018-07-24 | 湛江正信科技服务有限公司 | desk lamp brightness adjusting method, system and intelligent desk lamp |
| CN113126066A (en) * | 2019-12-26 | 2021-07-16 | 华为技术有限公司 | Laser safety circuit and laser safety equipment |
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Cited By (4)
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| CN113126066A (en) * | 2019-12-26 | 2021-07-16 | 华为技术有限公司 | Laser safety circuit and laser safety equipment |
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Application publication date: 20160810 |
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