CN107799091A - A kind of screen luminance adjustment method and system - Google Patents
A kind of screen luminance adjustment method and system Download PDFInfo
- Publication number
- CN107799091A CN107799091A CN201711120633.6A CN201711120633A CN107799091A CN 107799091 A CN107799091 A CN 107799091A CN 201711120633 A CN201711120633 A CN 201711120633A CN 107799091 A CN107799091 A CN 107799091A
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- Prior art keywords
- screen
- screen intensity
- data
- pulse width
- embeded processor
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Classifications
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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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0484—Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range
- G06F3/04847—Interaction techniques to control parameter settings, e.g. interaction with sliders or dials
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1415—Digital output to display device ; Cooperation and interconnection of the display device with other functional units with means for detecting differences between the image stored in the host and the images displayed on the displays
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
Abstract
The invention discloses a kind of screen luminance adjustment method and system, including：Attempt to obtain screen intensity regulation data and key command；The dutycycle of data or key command control embeded processor output pulse width Regulate signal is adjusted according to screen intensity；Screen intensity is adjusted using pulse width adjustment signal.Screen luminance adjustment method proposed by the present invention can be directed to different screen with system or different types of screen carries out screen intensity regulation, simplifies adjustment flow, improves and perform stability, and do not influence host side course of normal operation.
Description
Technical field
The present invention relates to computer realm, and more specifically, more particularly to a kind of screen luminance adjustment method and system.
Background technology
Low-voltage differential signal (Low-Voltage Differential Signaling, LVDS) screen intensity is adjusted
Realized by pulse width modulation (Pulse Width Modulation, PWM) technology, when needing, the screen for changing LVDS is bright
When spending, it can be realized by adjusting the dutycycle for the pwm signal for inputting LVDS screens.The notebook computer of prior art
LVDS screen intensity Regulate signals are connected to the signal L_ on platform controller (Platform Controller Hub, PCH)
BKLTCTL, it is therefore desirable to control LVDS screen intensitys to adjust by the driving of mainboard bridge chip.
As shown in figure 1, in the prior art, the LVDS screen intensitys regulation shortcut on keyboard of notebook computer is pressed
Afterwards, embeded processor (Embedded Controller, EC) generation system management interrupt (System Control
Interrupt, SCI), pass through ACPI (Advanced Configuration and Power
Interface, ACPI) PCH drivings are called, so as to adjust LVDS screen intensitys.LVDS screen intensitys are controlled by means of which
Need to drive three links by EC, ACPI, PCH, on the one hand influence the normal work process of host side, another aspect process is numerous
It is trivial easily mistake occur.
Being adjusted for screen intensity in the prior art influences the normal work process of host side and process is cumbersome easily goes out
The problem of existing wrong, there has been no effective solution at present.
The content of the invention
In view of this, the purpose of the embodiment of the present invention is to propose a kind of screen luminance adjustment method and system, Neng Gouzhen
Screen intensity regulation is carried out to different screen or different types of screen, simplifies adjustment flow, improves and perform stability, and not
Influence host side course of normal operation.
Based on above-mentioned purpose, the one side of the embodiment of the present invention provides a kind of screen luminance adjustment method, including following
Step：
Attempt to obtain screen intensity regulation data and key command；
Data are adjusted according to screen intensity or key command controls embeded processor output pulse width Regulate signal
Dutycycle；
Screen intensity is adjusted using pulse width adjustment signal.
In some embodiments, attempt acquisition screen intensity regulation data includes with key command：
Attempt to obtain the screen intensity regulation data from main frame from serial ports；
When screen intensity regulation data can not be obtained, attempt to obtain key command from matrix keyboard；
When key command can not be obtained, remain waiting for until successfully obtain screen intensity regulation data and key command it
One.
In some embodiments, data control embeded processor output pulse width regulation is adjusted according to screen intensity
The dutycycle of signal includes：
Embeded processor adjusts in data from screen intensity and parses regulating command and brightness value；
Embeded processor controls the dutycycle of pulse width adjustment signal according to regulating command and brightness value.
In some embodiments, embeded processor directly obtains key command.
In some embodiments, the use of pulse width adjustment signal regulation screen intensity is according to duty cycle adjustment screen
Brightness.
In some embodiments, the screen for being conditioned brightness is low-voltage differential signal screen.
In some embodiments, serial ports is the RS-485 serial ports for being connected to main frame.
In some embodiments, during the work of embeded processor, host side need not be adaptively
System management interrupt.
The another aspect of the embodiment of the present invention, a kind of screen intensity regulating system is additionally provided, including：
Main frame, is provided with serial ports, and main frame sends screen intensity regulation data when required by serial ports；
Matrix keyboard, key command is sent when needed；
More screens, each of which platform screen are connected to matrix keyboard and are connected to main frame by serial ports；Each screen
Curtain includes embeded processor, and each screen adjusts data or key command using the above method according to screen intensity
The dutycycle of embeded processor output pulse width Regulate signal is controlled, and is adjusted using pulse width adjustment signal respective
Screen intensity.
In some embodiments, system management interrupt need not adaptively occur for host side.
The present invention has following advantageous effects：Screen luminance adjustment method and system provided in an embodiment of the present invention,
The duty of data and key command control embeded processor output pulse width Regulate signal is adjusted by obtaining screen intensity
Than and adjust the technical scheme of screen intensity, different screen can be directed to or different types of screen carries out screen intensity regulation,
Simplify adjustment flow, improve and perform stability, and do not influence host side course of normal operation.This method completely disengages system layer
The participation of software, remote control can be achieved in EC aspects, so as to improve the dependable with function of function realization.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of the screen luminance adjustment method of prior art；
Fig. 2 is the schematic flow sheet of one embodiment of screen luminance adjustment method provided by the invention；
Fig. 3 is the schematic flow sheet of second embodiment of screen luminance adjustment method provided by the invention；
Fig. 4 is the modular structure schematic diagram of one embodiment of screen intensity regulating system provided by the invention.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, below in conjunction with specific embodiment, and reference
Accompanying drawing, the embodiment of the present invention is further described.
It should be noted that all statements for using " first " and " second " are for differentiation two in the embodiment of the present invention
The non-equal entity of individual same names or non-equal parameter, it is seen that " first " and " second " only for statement convenience, no
It is interpreted as the restriction to the embodiment of the present invention, subsequent embodiment no longer illustrates one by one to this.
Based on above-mentioned purpose, the embodiment of the present invention the on one side, it is proposed that one kind can be directed to different screen or not
The screen of same type carries out one embodiment of the method for screen intensity regulation.Fig. 2 is illustrated that screen provided by the invention
The schematic flow sheet of one embodiment of brightness adjusting method.
The screen luminance adjustment method, alternatively, comprise the following steps：
Step S101, attempt to obtain screen intensity regulation data and key command；
Step S103, data are adjusted according to screen intensity or key command controls embeded processor output pulse width to adjust
Save the dutycycle of signal；
Step S105, screen intensity is adjusted using pulse width adjustment signal.
In some embodiments, attempt acquisition screen intensity regulation data includes with key command：
Attempt to obtain the screen intensity regulation data from main frame from serial ports；
When screen intensity regulation data can not be obtained, attempt to obtain key command from matrix keyboard；
When key command can not be obtained, remain waiting for until successfully obtain screen intensity regulation data and key command it
One.
Wherein, alternatively, control of the screen preferential receipt from main frame.
In some embodiments, data control embeded processor output pulse width regulation is adjusted according to screen intensity
The dutycycle of signal includes：
Embeded processor adjusts in data from screen intensity and parses regulating command and brightness value；
Embeded processor controls the dutycycle of pulse width adjustment signal according to regulating command and brightness value.
Wherein, alternatively, main frame can send identical screen intensity regulation data to all screens as required, will
Each screen adjustment can also send different screen brightness regulation data respectively to each screen, each screen is adjusted to identical brightness
Save different brightness.
In some embodiments, embeded processor directly obtains key command.
In some embodiments, the use of pulse width adjustment signal regulation screen intensity is according to duty cycle adjustment screen
Brightness.
Wherein, can also be as main frame one it is alternatively possible to which matrix keyboard, which is respectively configured, for each screen carries out local control
Sample controls multiple screens even all screens using a matrix keyboard.
In some embodiments, the screen for being conditioned brightness is low-voltage differential signal screen.
In some embodiments, serial ports is the RS-485 serial ports for being connected to main frame.
In some embodiments, during the work of embeded processor, host side need not be adaptively
System management interrupt.
From above-described embodiment as can be seen that screen luminance adjustment method provided in an embodiment of the present invention, by obtaining screen
Brightness regulation data control the dutycycle of embeded processor output pulse width Regulate signal with key command and adjust screen
The technical scheme of brightness, can be directed to different screen or different types of screen carries out screen intensity regulation, simplify adjustment flow,
Improve and perform stability, and do not influence host side course of normal operation.
The embodiment of the present invention, which also proposed one kind, can be directed to different screen or different types of screen progress screen intensity
Second embodiment of the method for regulation.Fig. 3 is illustrated that second implementation of screen luminance adjustment method provided by the invention
The schematic flow sheet of example.
The method of screen intensity regulation can be used for the brightness for adjusting multiple LVDS screens simultaneously, lead to using serial data
Letter regulation screen intensity (i.e. main frame is adjusted) and button detection regulation LVDS screen intensitys (i.e. matrix keyboard is adjusted).For serial ports
Data are adjusted, and RS-485 excuses can realize multipoint data communication, and main frame can change multiple nodes according to the order of setting
Screen intensity；When EC receives data after, the order in data and brightness value are parsed, the pwm signal for then adjusting output accounts for
Empty ratio, so as to complete the regulation to LVDS screen intensitys.Adjusted for button, after user presses shortcut, EC can be direct
Key assignments is obtained, takes corresponding actions, such as the pwm signal dutycycle of control EC outputs to raise or drop according to current key assignments
Low LVDS screen intensitys.
As shown in figure 3, after start, it is first determined whether receiving data, if receiving data and verifying correctly, set
Put screen intensity；If being not received by data, whether the shortcut detected on matrix keyboard is pressed；If matrix keyboard
Shortcut is not pressed, then continues to detect whether to receive data；If matrix keyboard shortcut is pressed, judge to be pressed
Shortcut whether be that LVDS brightness increases or decreases button, if it is, select corresponding operation according to specific shortcut,
Such as adjust LVDS screen intensitys by adjusting the dutycycle of pwm signal.
From above-described embodiment as can be seen that screen luminance adjustment method provided in an embodiment of the present invention, by obtaining screen
Brightness regulation data control the dutycycle of embeded processor output pulse width Regulate signal with key command and adjust screen
The technical scheme of brightness, can be directed to different screen or different types of screen carries out screen intensity regulation, simplify adjustment flow,
Improve and perform stability, and do not influence host side course of normal operation.
It is important to note that each step in each embodiment of above-mentioned screen luminance adjustment method can phase
Mutually intersect, replace, increase, delete, therefore, these rational permutation and combination become alternatively should also be as belonging in screen luminance adjustment method
In protection scope of the present invention, and protection scope of the present invention should not be confined on the embodiment.
Based on above-mentioned purpose, second aspect of the embodiment of the present invention, it is proposed that one kind can be directed to different screen or not
The screen of same type carries out one embodiment of the system of screen intensity regulation.Fig. 4 is illustrated that screen provided by the invention
The structural representation of one embodiment of brightness control system.
The screen intensity regulating system, alternatively includes：
Main frame, is provided with serial ports, and main frame sends screen intensity regulation data when required by serial ports；
Matrix keyboard, key command is sent when needed；
More screens, each of which platform screen are connected to matrix keyboard and are connected to main frame by serial ports；Each screen
Curtain includes embeded processor, and each screen adjusts data or key command using the above method according to screen intensity
The dutycycle of embeded processor output pulse width Regulate signal is controlled, and is adjusted using pulse width adjustment signal respective
Screen intensity.
In some embodiments, system management interrupt need not adaptively occur for host side.
From above-described embodiment as can be seen that screen intensity regulating system provided in an embodiment of the present invention, by obtaining screen
Brightness regulation data control the dutycycle of embeded processor output pulse width Regulate signal with key command and adjust screen
The technical scheme of brightness, can be directed to different screen or different types of screen carries out screen intensity regulation, simplify adjustment flow,
Improve and perform stability, and do not influence host side course of normal operation.
It is important to note that the embodiment of above-mentioned screen intensity regulating system employs the screen intensity regulation side
The embodiment of method illustrates the course of work of each module, and those skilled in the art can be it is readily conceivable that by these modules
It is applied in the other embodiment of the screen luminance adjustment method.Certainly, due to the screen luminance adjustment method embodiment
In each step can intersect, replace, increase, delete, therefore, these rational permutation and combination become alternatively in described
Screen intensity regulating system be should also be as belonging to protection scope of the present invention, and protection scope of the present invention should not be confined to institute
State on embodiment.
Above is exemplary embodiment disclosed by the invention, it should be noted that in the sheet limited without departing substantially from claim
On the premise of inventive embodiments scope of disclosure, it may be many modifications and change.According to open embodiment described herein
The function of claim to a method, step and/or action be not required to perform with any particular order.In addition, although the present invention is implemented
Element disclosed in example can be described or required in the form of individual, but be odd number unless explicitly limited, it is understood that be multiple.
It should be appreciated that it is used in the present context, unless context clearly supports exception, singulative " one
It is individual " (" a ", " an ", " the ") be intended to also include plural form.It is to be further understood that "and/or" used herein is
Referring to includes any of one or more than one project listed in association and is possible to combine.
One of ordinary skill in the art will appreciate that hardware can be passed through by realizing all or part of step of above-described embodiment
To complete, by program the hardware of correlation can also be instructed to complete, described program can be stored in a kind of computer-readable
In storage medium, storage medium mentioned above can be read-only storage, disk or CD etc..
Those of ordinary skills in the art should understand that：The discussion of any of the above embodiment is exemplary only, not
It is intended to imply that scope of disclosure of the embodiment of the present invention (including claim) is limited to these examples；In the think of of the embodiment of the present invention
It under road, can also be combined, and exist as described above between the technical characteristic in above example or different embodiments
Many other changes of the different aspect of the embodiment of the present invention, for simplicity, they are not provided in details.Therefore, it is all at this
Spiritual and any omission within principle, made, modification, equivalent substitution, improvement of inventive embodiments etc., should be included in this hair
Within the protection domain of bright embodiment.
Claims (10)
1. a kind of screen luminance adjustment method, it is characterised in that comprise the following steps：
Attempt to obtain screen intensity regulation data and key command；
Data or key command control embeded processor output pulse width regulation letter are adjusted according to the screen intensity
Number dutycycle；
Screen intensity is adjusted using the pulse width adjustment signal.
2. according to the method for claim 1, it is characterised in that attempt the acquisition screen intensity regulation data and pressed with described
Key instruction includes：
Attempt to obtain the screen intensity regulation data from main frame from serial ports；
When the screen intensity regulation data can not be obtained, attempt to obtain the key command from matrix keyboard；
When the key command can not be obtained, remain waiting for until successfully obtain screen intensity regulation data with it is described by
One of key instruction.
3. according to the method for claim 2, it is characterised in that data are adjusted according to the screen intensity and control the insertion
The dutycycle that formula processor exports the pulse width adjustment signal includes：
The embeded processor adjusts in data from the screen intensity and parses regulating command and brightness value；
The embeded processor controls the institute of the pulse width adjustment signal according to the regulating command and the brightness value
State dutycycle.
4. according to the method for claim 2, it is characterised in that the embeded processor directly obtains the button and referred to
Order.
5. according to the method for claim 1, it is characterised in that use pulse width adjustment signal regulation screen intensity
For according to the duty cycle adjustment screen intensity.
6. according to the method for claim 1, it is characterised in that the screen for being conditioned brightness is low-voltage differential signal screen
Curtain.
7. according to the method for claim 2, it is characterised in that the serial ports is the RS-485 strings for being connected to the main frame
Mouthful.
8. according to the method for claim 2, it is characterised in that during the work of the embeded processor, the master
System management interrupt need not adaptively occur for generator terminal.
A kind of 9. screen intensity regulating system, it is characterised in that including：
Main frame, is provided with serial ports, and the main frame sends screen intensity regulation data when required by the serial ports；
Matrix keyboard, key command is sent when needed；
More screens, each of which platform screen are connected to the matrix keyboard and are connected to the main frame by the serial ports；
The each screen includes embeded processor, and each screen is used such as any one in claim 1-8
Described method to adjust data according to the screen intensity or the key command controls the embeded processor output arteries and veins
The dutycycle of width adjustment signal is rushed, and respective screen intensity is adjusted using the pulse width adjustment signal.
10. system according to claim 9, it is characterised in that system pipes need not adaptively occur for the host side
Reason is interrupted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711120633.6A CN107799091A (en) | 2017-11-14 | 2017-11-14 | A kind of screen luminance adjustment method and system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711120633.6A CN107799091A (en) | 2017-11-14 | 2017-11-14 | A kind of screen luminance adjustment method and system |
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Family
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| CN201711120633.6A Pending CN107799091A (en) | 2017-11-14 | 2017-11-14 | A kind of screen luminance adjustment method and system |
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| CN108986729A (en) * | 2018-06-28 | 2018-12-11 | 山东超越数控电子股份有限公司 | The control method and system of notebook LVDS screen intensity are adjusted based on EC |
| CN110536272A (en) * | 2019-08-30 | 2019-12-03 | 联想(北京)有限公司 | Information processing method, device and electronic equipment |
| CN111081197A (en) * | 2018-10-18 | 2020-04-28 | Oppo（重庆）智能科技有限公司 | Brightness parameter synchronization method, related device and readable storage medium |
| CN111966411A (en) * | 2020-08-12 | 2020-11-20 | 山东超越数控电子股份有限公司 | Intelligent dimming implementation method based on autonomous information system |
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