CN106373530A - Control method and device of backlight of display screen - Google Patents
Control method and device of backlight of display screen Download PDFInfo
- Publication number
- CN106373530A CN106373530A CN201610868197.XA CN201610868197A CN106373530A CN 106373530 A CN106373530 A CN 106373530A CN 201610868197 A CN201610868197 A CN 201610868197A CN 106373530 A CN106373530 A CN 106373530A
- Authority
- CN
- China
- Prior art keywords
- display screen
- backlight
- synchronous signal
- time point
- described display
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
Abstract
The present invention discloses a control method and device of the backlight of a display screen. The method includes the following steps that: whether the output pin of the display screen of a target virtual reality product outputs pulse synchronizing signals is detected; if the output pin of the display screen of the target virtual reality product outputs the pulse synchronizing signals, the states of frames corresponding to the pulse synchronizing signals are detected; when the frames are in steady states, the backlight of the display screen is turned on; and when a preset backlight turn-off condition is satisfied, the backlight of the display screen is turned off. With the control method and device of the backlight of the display screen provided by the embodiments of the present invention adopted, motion blur can be reduced.
Description
Technical field
The present invention relates to data presentation technique field, particularly to a kind of control method of display backlight and device.
Background technology
Vr (virtual reality, virtual reality) product refers to the product facility based on virtual reality technology research and development.Empty
Intending reality technology is a kind of computer simulation technique that can create with the experiencing virtual world, and it utilizes computer to generate a kind of mould
Near-ring border, is a kind of interactively Three-Dimensional Dynamic what comes into a driver's of Multi-source Information Fusion and the system emulation of entity behavior, thus using
Family is immersed in this environment.
At present, the LCDs (lcd) of vr product backlight in display image is always on, due to " taking out of lcd
Sample-holding " characteristic, is all bright within the refresh cycle of a frame, result in lcd show moving image when can produce fuzzy.
Content of the invention
The purpose of the embodiment of the present invention is to provide a kind of control method of display backlight and device, to reduce motion mould
Paste.
For reaching above-mentioned purpose, the embodiment of the invention discloses a kind of control method of display backlight, method includes:
Whether the output pin of the display screen of detection destination virtual real product has pulse synchronous signal to export；
If it is, detecting to the state of the corresponding frame of described pulse synchronous signal；
When described frame is in steady statue, open the backlight of described display screen；
Under meeting default backlight closedown condition, close the backlight of described display screen.
Preferably, described display screen is:
Thin film transistor liquid crystal display screen.
Preferably, whether the output pin of the display screen of described detection destination virtual real product has pulse synchronous signal defeated
Go out, comprising:
Detect the output pin of described display screen using the micro-control unit being arranged in described destination virtual real product
Pulse synchronous signal whether is had to export.
Preferably, described default backlight closedown condition is:
Close the time point that backlight time point is away from backlight open time point preset duration.
Preferably, when the screen refresh frequency of described display screen is 60fps, described preset duration is:
18% screen refresh period of described display screen.
For reaching above-mentioned purpose, the embodiment of the invention discloses a kind of control device of display backlight, device includes:
First detection module, whether the output pin for detecting the display screen of destination virtual real product has impulsive synchronization
Signal output；
Second detection module, in the case of having pulse synchronous signal output for described output pin, same to described pulse
The state of the step corresponding frame of signal is detected；
Opening module, for when described frame is in steady statue, opening the backlight of described display screen；
Closedown module, for meeting under default backlight closedown condition, closes the backlight of described display screen.
Preferably, described display screen is:
Thin film transistor liquid crystal display screen.
Preferably, described first detection module, specifically for:
Detect the output pin of described display screen using the micro-control unit being arranged in described destination virtual real product
Pulse synchronous signal whether is had to export.
Preferably, described default backlight closedown condition is:
Close the time point that backlight time point is away from backlight open time point preset duration.
Preferably, when the screen refresh frequency of described display screen is 60fps, described preset duration is:
18% screen refresh period of described display screen.
As seen from the above technical solutions, a kind of control method of display backlight and dress are embodiments provided
Put, whether the output pin of the display screen of detection destination virtual real product has pulse synchronous signal to export；If it is, to described
The state of the corresponding frame of pulse synchronous signal is detected；When described frame is in steady statue, open the back of the body of described display screen
Light；Under meeting default backlight closedown condition, close the backlight of described display screen.
It can be seen that, the display screen of vr product in display image, by opening and closing the backlight of display screen so that in a frame
Refresh cycle in be not bright always, thus reducing lcd to show produce during moving image fuzzy, that is, decrease motion mould
Paste.
Certainly, implement arbitrary product of the present invention or method must be not necessarily required to reach simultaneously all the above excellent
Point.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, acceptable
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of schematic flow sheet of the control method of display backlight provided in an embodiment of the present invention；
Fig. 2 is a kind of structural representation of the control device of display backlight provided in an embodiment of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
First below a kind of control method of display backlight that embodiment provides is described in detail.
Referring to Fig. 1, Fig. 1 is a kind of schematic flow sheet of the control method of display backlight provided in an embodiment of the present invention,
May include steps of:
S101, whether the output pin of the display screen of detection destination virtual real product has pulse synchronous signal to export；
Specifically, it is possible to use be arranged on the micro-control unit in described destination virtual real product, detect described display
Whether the output pin of screen has pulse synchronous signal to export.Wherein, output pin is te (tearing effect, tear effect)
Pin (also referred to as fmark pin), can export a synchronizing signal preventing tearing effect phenomenon, i.e. pulse
Synchronizing signal (te signal).In actual applications, micro-control unit can adopt one chip microcomputer (mcu), such as model
Mcu for stm32f411.
Specifically, display screen can be: thin film transistor liquid crystal display screen (tft-lcd), such as 5.7 in2 560*
The tft-lcd of 1440 resolution.
S102, detects to the state of the corresponding frame of described pulse synchronous signal；
Specifically, output pin have pulse synchronous signal output in the case of, can by detect current point in time away from
Pulse synchronous signal output time point duration, and by the refresh period of this duration and a frame time, wait stablize the period and
Stablize period contrast, obtain the state of the corresponding frame of this pulse synchronous signal, wherein, the state of frame can be divided into Flushing status,
Waiting steady statue, steady statue (pixel steady statue).For example, the screen refresh frequency in display screen be frame per second be 60fps
In the case of (frame/second), the refresh cycle is 16.67ms (time of a frame), opens from the output time point t of pulse synchronous signal
Begin, refresh period can be t to t+2ms, wait that to stablize the period can be t+2ms～t+14ms, stablizing the period can be t+
14ms～t+16.67ms.
S103, when described frame is in steady statue, opens the backlight of described display screen；
Specifically, the output pin of display screen exports a te signal, exports backlight control signal as mcu
The time reference of (backlight strobe).According to this te signal, when frame pixel reaches steady statue, for example, detect and work as
Front time point is t+14ms or t+15ms, is in stable period t+14ms～t+16.67ms, can be gated by mcu
(backlight drive is that a boosting ic boosts integrated circuit, is supplied to one power supply electricity of backlight backlight driver
Pressure), to open the backlight of display screen.
S104, under meeting default backlight closedown condition, closes the backlight of described display screen.
Specifically, default backlight closedown condition can be: close backlight time point be away from backlight open time point preset when
Long time point.In actual applications, when the screen refresh frequency of display screen is 60fps, screen refresh period is
16.67ms, preset duration can be: 18% screen refresh period of display screen, i.e. 3ms.That is, in backlight open 3ms
Afterwards, close the backlight of display screen.Wherein, the duration of backlight open can consider whether suitable screen intensity and screen
Brightness has flicker free.The time span of backlight open the smaller the better it is therefore desirable to accomplish below 1ms, but be limited to backlight chip
Response time, can accomplish 3ms at present.For improving performance, subsequently can from response speed faster, the higher back of the body of driving force
Optical chip.
It can be seen that, the display screen of vr product in display image, by opening and closing the backlight of display screen so that in a frame
Refresh cycle in be not bright always, thus reducing lcd to show produce during moving image fuzzy, that is, decrease motion mould
Paste.
Referring to Fig. 2, Fig. 2 is a kind of structural representation of the control device of display backlight provided in an embodiment of the present invention,
Corresponding with the flow process shown in Fig. 1, this control device includes: first detection module 201, the second detection module 202, opening module
203rd, closedown module 204.
First detection module 201, whether the output pin for detecting the display screen of destination virtual real product has pulse
Synchronizing signal exports；
Specifically, described display screen can be:
Thin film transistor liquid crystal display screen.
Specifically, first detection module 201, specifically can be used for:
Detect the output pin of described display screen using the micro-control unit being arranged in described destination virtual real product
Pulse synchronous signal whether is had to export.
Second detection module 202, in the case of having pulse synchronous signal output for described output pin, to described pulse
The state of the corresponding frame of synchronizing signal is detected；
Opening module 203, in the case of having pulse synchronous signal output for described output pin, when frame blanking terminates
When, open the backlight of described display screen；
Closedown module 204, for meeting under default backlight closedown condition, closes the backlight of described display screen.
Specifically, described default backlight closedown condition can be:
Close the time point that backlight time point is away from backlight open time point preset duration.
Specifically, when the screen refresh frequency of described display screen is 60fps, described preset duration can be:
18% screen refresh period of described display screen.
It can be seen that, the display screen of vr product in display image, by opening and closing the backlight of display screen so that in a frame
Refresh cycle in be not bright always, thus reducing lcd to show produce during moving image fuzzy, that is, decrease motion mould
Paste.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation are made a distinction with another entity or operation, and not necessarily require or imply these entities or deposit between operating
In any this actual relation or order.And, term " inclusion ", "comprising" or its any other variant are intended to
Comprising of nonexcludability, wants so that including a series of process of key elements, method, article or equipment and not only including those
Element, but also include other key elements being not expressly set out, or also include for this process, method, article or equipment
Intrinsic key element.In the absence of more restrictions, the key element that limited by sentence "including a ..." it is not excluded that
Also there is other identical element including in the process of described key element, method, article or equipment.
Each embodiment in this specification is all described by the way of related, identical similar portion between each embodiment
Divide mutually referring to what each embodiment stressed is the difference with other embodiment.Real especially for device
For applying example, because it is substantially similar to embodiment of the method, so description is fairly simple, referring to embodiment of the method in place of correlation
Part illustrate.
One of ordinary skill in the art will appreciate that realizing all or part of step in said method embodiment is can
Completed with the hardware instructing correlation by program, described program can be stored in computer read/write memory medium,
The storage medium obtaining designated herein, such as: rom/ram, magnetic disc, CD etc..
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit protection scope of the present invention.All
Any modification, equivalent substitution and improvement made within the spirit and principles in the present invention etc., are all contained in protection scope of the present invention
Interior.
Claims (10)
1. a kind of control method of display backlight is it is characterised in that methods described includes:
Whether the output pin of the display screen of detection destination virtual real product has pulse synchronous signal to export；
If it is, detecting to the state of the corresponding frame of described pulse synchronous signal；
When described frame is in steady statue, open the backlight of described display screen；
Under meeting default backlight closedown condition, close the backlight of described display screen.
2. method according to claim 1 is it is characterised in that described display screen is:
Thin film transistor liquid crystal display screen.
3. method according to claim 1 it is characterised in that the display screen of described detection destination virtual real product defeated
Go out whether pin has pulse synchronous signal to export, comprising:
Whether the output pin detecting described display screen using the micro-control unit that is arranged in described destination virtual real product
Pulse synchronous signal is had to export.
4. method according to claim 1 is it is characterised in that described default backlight closedown condition is:
Close the time point that backlight time point is away from backlight open time point preset duration.
5. method according to claim 4 it is characterised in that described display screen screen refresh frequency be 60fps when,
Described preset duration is:
18% screen refresh period of described display screen.
6. a kind of control device of display backlight is it is characterised in that described device includes:
First detection module, whether the output pin for detecting the display screen of destination virtual real product has pulse synchronous signal
Output；
Second detection module, in the case of having pulse synchronous signal output for described output pin, believes to described impulsive synchronization
The state of number corresponding frame is detected；
Opening module, for when described frame is in steady statue, opening the backlight of described display screen；
Closedown module, for meeting under default backlight closedown condition, closes the backlight of described display screen.
7. device according to claim 6 is it is characterised in that described display screen is:
Thin film transistor liquid crystal display screen.
8. device according to claim 6 is it is characterised in that described first detection module, specifically for:
Whether the output pin detecting described display screen using the micro-control unit that is arranged in described destination virtual real product
Pulse synchronous signal is had to export.
9. device according to claim 6 is it is characterised in that described default backlight closedown condition is:
Close the time point that backlight time point is away from backlight open time point preset duration.
10. device according to claim 9 it is characterised in that described display screen screen refresh frequency be 60fps
When, described preset duration is:
18% screen refresh period of described display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610868197.XA CN106373530A (en) | 2016-09-29 | 2016-09-29 | Control method and device of backlight of display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610868197.XA CN106373530A (en) | 2016-09-29 | 2016-09-29 | Control method and device of backlight of display screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106373530A true CN106373530A (en) | 2017-02-01 |
Family
ID=57897640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610868197.XA Pending CN106373530A (en) | 2016-09-29 | 2016-09-29 | Control method and device of backlight of display screen |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108564919A (en) * | 2018-04-26 | 2018-09-21 | 京东方科技集团股份有限公司 | Display methods, display control unit and display equipment |
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| CN101271676A (en) * | 2008-05-20 | 2008-09-24 | 友达光电股份有限公司 | LCD device, device and method for driving its backlight module |
| CN102595181A (en) * | 2012-03-08 | 2012-07-18 | 深圳市华星光电技术有限公司 | Three-dimensional display device and display control method thereof |
| CN102937766A (en) * | 2012-10-24 | 2013-02-20 | 京东方科技集团股份有限公司 | Array substrate, liquid crystal display device and driving method thereof |
| CN105389144A (en) * | 2014-08-25 | 2016-03-09 | 三星电子株式会社 | Host and multi-display system including the same |
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2016
- 2016-09-29 CN CN201610868197.XA patent/CN106373530A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101271676A (en) * | 2008-05-20 | 2008-09-24 | 友达光电股份有限公司 | LCD device, device and method for driving its backlight module |
| CN102595181A (en) * | 2012-03-08 | 2012-07-18 | 深圳市华星光电技术有限公司 | Three-dimensional display device and display control method thereof |
| CN102937766A (en) * | 2012-10-24 | 2013-02-20 | 京东方科技集团股份有限公司 | Array substrate, liquid crystal display device and driving method thereof |
| CN105389144A (en) * | 2014-08-25 | 2016-03-09 | 三星电子株式会社 | Host and multi-display system including the same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108564919A (en) * | 2018-04-26 | 2018-09-21 | 京东方科技集团股份有限公司 | Display methods, display control unit and display equipment |
| US10755637B2 (en) | 2018-04-26 | 2020-08-25 | Boe Technology Group Co., Ltd. | Display method, display control device and display apparatus |
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Application publication date: 20170201 |