CN103531153A - Control method of display screen - Google Patents
Control method of display screen Download PDFInfo
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- CN103531153A CN103531153A CN201210226715.XA CN201210226715A CN103531153A CN 103531153 A CN103531153 A CN 103531153A CN 201210226715 A CN201210226715 A CN 201210226715A CN 103531153 A CN103531153 A CN 103531153A
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Abstract
A control method of a display screen is used for performing on the display screen in a non-energy-saving manner. The control method comprises the following steps: receiving a plurality of continuous picture frames; in receiving each picture frame, dividing the picture frame to X sub-picture-frames according to a default principle, storing a (N mod X)th sub-picture-frame and [(N-1)modX]th sub-picture-frame in receiving an N-th picture frame, and comparing the [(N-1)modX]th sub-picture-frame of the N-th picture frame with the [(N-1)modX]th sub-picture-frame of the (N-1)th picture frame for generating a difference value; adding the difference values which correspond with the X picture frames every receiving X picture frames; and if the number of continuous times when the summation of the difference values is smaller than a default threshold value reaches a default number, entering the energy-saving mode. Thereby, the display screen can automatically enter the energy-saving mode after the picture of the display screen is stationary for a certain time period.
Description
Technical field
The present invention relates to a kind of control method of display screen, particularly relate to a kind of for reducing the control method of the display screen of display screen power consumption.
Background technology
The primary option menu of current DVD player meeting DVD playing back disc after playing film, or the sign of DVD player (logo).In aforesaid situation, DVD player continues the identical picture frame of output to display screen, makes the picture of display screen in static state.Display screen is because therefore the signal that continues to receive from DVD player can not enter energy saver mode.Yet display screen continues to show that identical picture easily causes picture to occur ghost, and waste electric power.Therefore, how to develop a kind of control method of new display screen, can after a period of time, enter energy saver mode in picture still, become the theme that this case further will be inquired into.
Summary of the invention
The object of the present invention is to provide a kind of control method with the display screen of energy-conservation and protection effect.
The control method of display screen, is applicable to a display screen and carries out, and this display screen can be executed in an energy saver mode and a non-energy saver mode, and under this non-energy saver mode, the control method of described display screen comprises:
(A) receive several continuous picture frames;
(B) when receiving each picture frame, this picture frame is divided into X sub-picture frame according to an acquiescence principle, and when receiving N picture frame, store (N mod X) individual sub-picture frame and [(N-1) mod X] individual sub-picture frame, and relatively [(N-1) mod X] the individual sub-picture frame of N picture frame and [(N-1) mod X] individual sub-picture frame of N-1 picture frame to produce a difference value, wherein, definition X is greater than 1 integer, N is greater than 1 integer, mod is the computing of two several remainder numbers that are divided by, when (N mod X) or [(N-1) mod X] is 0, (N mod X) individual sub-picture frame or [(N-1) mod X] individual sub-picture frame represent X sub-picture frame,
(C) after X picture frame of every reception, difference value corresponding to this X picture frame added up; And
(D) if the difference value summation that step (C) is calculated is less than the read-around ratio of an acquiescence critical value, arrive a default number of times, enter this energy saver mode.
Preferably, after this display screen enters this energy saver mode, carry out below step:
(E) receive several continuous picture frames;
(F) when receiving each picture frame, this picture frame is divided into X sub-picture frame according to this acquiescence principle, and when receiving N picture frame, store (N mod X) individual sub-picture frame and [(N-1) mod X] individual sub-picture frame, and comparison [(N-1) mod X] the individual sub-picture frame of N picture frame and [(N-1) mod X] individual sub-picture frame of N-1 picture frame are to produce a difference value;
(G) after X picture frame of every reception, difference value corresponding to this X picture frame added up; And
(H) if the difference value summation that step (G) is calculated is not less than this acquiescence critical value, enter this non-energy saver mode.
Preferably, when entering this energy saver mode, this display screen is closed a backlight of one display module, or the brightness of this backlight is reduced.Or when entering this energy saver mode, this display screen is closed one loudspeaker.Or when entering this energy saver mode, a control module of this display screen stops transmitting video signal to a display module of this display screen.
Beneficial effect of the present invention is: by the difference of the subgraph frame of a wherein same position of each picture frame and last picture frame thereof relatively, to judge that whether picture is static, thereby determine whether to enter energy saver mode.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of preferred embodiment of the control method of display screen of the present invention, illustrates that display screen is executed in the process step of a non-energy saver mode;
Fig. 2 is another process flow diagram of this preferred embodiment, illustrates that display screen is executed in the process step of an energy saver mode;
Fig. 3 is a schematic diagram of the 1st picture frame receiving of this preferred embodiment, illustrates that this preferred embodiment stores the 1st subgraph frame of the 1st picture frame;
Fig. 4 is a schematic diagram of the 2nd picture frame receiving of this preferred embodiment, illustrates that this preferred embodiment stores the 2nd subgraph frame and the 1st subgraph frame of the 2nd picture frame;
Fig. 5 is a schematic diagram of the 3rd picture frame receiving of this preferred embodiment, illustrates that this preferred embodiment stores the 3rd subgraph frame and the 2nd subgraph frame of the 3rd picture frame;
Fig. 6 is a schematic diagram of the 4th picture frame receiving of this preferred embodiment, illustrates that this preferred embodiment stores the 4th subgraph frame and the 3rd subgraph frame of the 4th picture frame;
Fig. 7 is a schematic diagram of the 24th picture frame receiving of this preferred embodiment, illustrates that this preferred embodiment stores the 24th subgraph frame and the 23rd subgraph frame of the 24th picture frame;
Fig. 8 is a schematic diagram of the 25th picture frame receiving of this preferred embodiment, illustrates that this preferred embodiment stores the 25th subgraph frame and the 24th subgraph frame of the 25th picture frame;
Fig. 9 is a schematic diagram of the 26th picture frame receiving of this preferred embodiment, illustrates that this preferred embodiment stores the 1st subgraph frame and the 25th subgraph frame of the 26th picture frame; And
Figure 10 is a schematic diagram of the 27th picture frame receiving of this preferred embodiment, illustrates that this preferred embodiment stores the 2nd subgraph frame and the 1st subgraph frame of the 27th picture frame.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
Fig. 1 and Fig. 2 are the process flow diagrams of preferred embodiment of the control method of display screen of the present invention.This preferred embodiment is applicable to a display screen and carries out.This display screen can be executed in an energy saver mode and a non-energy saver mode.Non-energy saver mode is normal manipulation mode.Entering energy saver mode can be a backlight of closing a display module of display screen, or the brightness of this backlight is reduced, or close a loudspeaker of display screen, or a control module of display screen stops transmitting video signal (as LVDS signal) to a display module of display screen.
Start before the flow process of the present embodiment, a plurality of initial control steps are described as follows.First, receive a picture frame (i.e. the 1st picture frame), and this picture frame is divided into X sub-picture frame according to an acquiescence principle, and store the 1st sub-picture frame, wherein, definition X is greater than 1 integer.Consult Fig. 3, in the present embodiment, this acquiescence principle is that picture frame is divided into 25 sub-picture frames (being X=25), and the area of each subgraph frame is identical.Be shown in the sequence number that numeral in each subgraph frame of Fig. 3 is corresponding subgraph frame, for example numeral 1 represents that its corresponding picture frame is the 1st subgraph frame, and numeral 2 represents that its corresponding picture frames are the 2nd subgraph frame, and the rest may be inferred.With oblique line, indicates to represent that this subgraph frame is stored in subgraph frame, for example the 1st subgraph collimation mark of Fig. 3 is shown with oblique line and represents that the 1st subgraph frame is stored.Certainly, the value of X is not limited with the present embodiment, and the area of each subgraph frame also can be different.
Below consult Fig. 1 and illustrate that this preferred embodiment is executed in the process step under non-energy saver mode in display screen.First, as step S01, the parameter n=0 of order for counting, the effect of parameter n is treated to describe in detail more below.Then,, as step S02, receive a picture frame.Then perform step S03, this picture frame is divided into X sub-picture frame according to this acquiescence principle.If this picture frame is N picture frame (definition N be greater than 1 integer), then as shown in step S04, store (N mod X) individual sub-picture frame and [(N-1) mod X] individual sub-picture frame of this N picture frame.Wherein, definition mod is the be divided by computings of remainder numbers of two numbers, and definition (N mod X) individual sub-picture frame or [(N-1) mod X] individual sub-picture frame when (N mod X) or [(N-1) mod X] is 0 represent the individual sub-picture frame of X.Then,, as shown in step S05, relatively [(N-1) mod X] the individual sub-picture frame of N picture frame and [(N-1) mod X] individual sub-picture frame of N-1 picture frame are to produce a difference value.
Step S04 and step S05 coordinate Fig. 4 more specific description below.Fig. 4 illustrates the 2nd picture frame that display screen receives, and in step S04, (2mod 25) and [(2-1) mod 25] individual sub-picture frame of the 2nd picture frame are stored, and the 2nd sub-picture frame and the 1st sub-picture frame are stored.In step S05, the 2nd [(2-1) mod 25] individual sub-picture frame of picture frame of comparison and [(2-1) mod 25] individual sub-picture frame of (2-1) individual picture frame to produce difference value, relatively the 1st sub-picture frame of the 2nd picture frame with the 1st sub-picture frame of the 1st picture frame with generation difference value.
Then as step S06, judge whether to have received X picture frame, if so, perform step S07, if not, repeated execution of steps S02 to S05 is until received X picture frame.More particularly, when receiving the 2nd picture frame, owing to having received only a picture frame, be therefore next repeated execution of steps S02 to S05: receive the 3rd picture frame (as Fig. 5), store its 3rd sub-picture frame and the 2nd sub-picture frame, the 2nd sub-picture frame of the 3rd picture frame of comparison and the 2nd sub-picture frame of the 2nd picture frame; Receive the 4th picture frame (as Fig. 6), store its 4th sub-picture frame and the 3rd sub-picture frame, the 3rd sub-picture frame of the 4th picture frame of comparison and the 3rd sub-picture frame of the 3rd picture frame, the rest may be inferred, receive and process after 23 picture frames of the 5th picture frame to the, then receive the 24th picture frame (as Fig. 7), store its 24th sub-picture frame and the 23rd sub-picture frame, the 23rd sub-picture frame of the 24th picture frame of comparison and the 23rd sub-picture frame of the 23rd picture frame; Then receive the 25th picture frame (as Fig. 8), store its 25th sub-picture frame and the 24th sub-picture frame, the 24th sub-picture frame of the 25th picture frame of comparison and the 24th sub-picture frame of the 24th picture frame; Then receive the 26th picture frame (as Fig. 9), store its 1st sub-picture frame and the 25th sub-picture frame, the 25th sub-picture frame of the 26th picture frame of comparison and the 25th sub-picture frame of the 25th picture frame.After receiving the 26th picture frame, receive 25 picture frames, therefore then will perform step S07.
Step S07 adds up X the difference value that picture frame is corresponding.Then as step S08, whether the difference value summation that determining step S07 calculates is less than an acquiescence critical value, if, perform step S09, if not, perform step S01, namely parameter n is made zero, and then receive next picture frame (as the 27th of Figure 10 the picture frame).In particular, step S08 judges that whether display screen picture is static, if difference value summation is less than acquiescence, critical value represents picture still, or the variation of picture is insignificant (being for example the variation being caused by noise).If difference value summation is not less than acquiescence, critical value represents that picture has produced variation.
Step S09 adds 1 by parameter n.Then step S10 is whether the value that judges parameter n arrives a default number of times m.If so, perform step S11, display screen enters energy saver mode, if not, performs step S02.In particular, parameter n is judged as static number of times continuously for adding up picture.In the present embodiment, the horizontal frequency of the picture frame receiving is that 60Hz(has 3600 picture frames for mono-minute, display screen was 3600/25=144 time by difference value summation with the number of times of acquiescence critical value comparison in 1 minute), default number of times m=144, when picture still in the time of 1 minute display screen can enter energy saver mode.
Under energy saver mode, the control method of the present embodiment can be carried out the process step as Fig. 2.First, as step S21, receive a picture frame.Then,, as step S22, picture frame is divided into X sub-picture frame according to this acquiescence principle.Then in step S23, store (N mod X) individual sub-picture frame and [(N-1) mod X] individual sub-picture frame of this picture frame.Step S24 is that [(N-1) mod X] the individual sub-picture frame of N picture frame of comparison and [(N-1) mod X] individual sub-picture frame of N-1 picture frame are to produce a difference value.Then in step S25, judge whether display screen has received X picture frame, if so, performs step S26, if not, performs step S21.In step S26, be to add up difference value corresponding to this X picture frame, and whether be less than an acquiescence critical value in the difference value summation of step S27 determining step S26 calculating, if, perform step S21, if not, perform step S28, leave this energy saver mode, enter this non-energy saver mode.More particularly, step S27 judges whether picture has the state that remains static, if difference value summation is less than acquiescence critical value, represent that picture is lasting static, therefore then display screen performs step S26 and step S27 to step S25 until receive and handle a lower X picture frame by repeated execution of steps S21 again.If difference value summation is not less than acquiescence, critical value represents that picture has produced variation, so display screen will leave energy saver mode and enter non-energy saver mode.
It is worth mentioning that, whether the present embodiment is static and automatically enter or leave energy saver mode except effectively differentiating picture, because the present embodiment is only stored local picture frame (i.e. two subgraph frames) and do not needed to store whole picture frame for each picture frame, therefore can effectively save the storer use amount of display screen, thereby make the present invention be convenient to implement.
In sum, the difference that the control method of display screen of the present invention is passed through to compare subgraph frame is to judge that whether picture is static, and can after a period of time, enter automatic energy saving pattern in picture still, thereby save the consumption of electric power, and avoid picture to occur ghost, in addition, storer use amount of the present invention is low, therefore be easy to the enforcement in industry, so really can reach object of the present invention.
Claims (5)
1. a control method for display screen, is applicable to a display screen and carries out; It is characterized in that: this display screen can be executed in an energy saver mode and a non-energy saver mode, under this non-energy saver mode, the control method of described display screen comprises:
(A) receive several continuous picture frames;
(B) when receiving each picture frame, this picture frame is divided into X subgraph frame according to an acquiescence principle, and when receiving N picture frame, store (N mod X) individual sub-picture frame and [(N-1) mod X] individual sub-picture frame, and relatively [(N-1) modX] the individual sub-picture frame of N picture frame and [(N-1) mod X] individual sub-picture frame of N-1 picture frame to produce a difference value, wherein, definition X is greater than 1 integer, N is greater than 1 integer, mod is the computing of two several remainder numbers that are divided by, when (N mod X) or [(N-1) mod X] is 0, (N mod X) individual sub-picture frame or [(N-1) mod X] individual sub-picture frame represent X sub-picture frame,
(C) after X picture frame of every reception, difference value corresponding to this X picture frame added up; And
(D) if the difference value summation that step (C) is calculated is less than the read-around ratio of an acquiescence critical value, arrive a default number of times, enter this energy saver mode.
2. the control method of display screen according to claim 1, is characterized in that: step below carrying out after this display screen enters this energy saver mode:
(E) receive several continuous picture frames;
(F) when receiving each picture frame, this picture frame is divided into X sub-picture frame according to this acquiescence principle, and when receiving N picture frame, store (N mod X) individual sub-picture frame and [(N-1) mod X] individual sub-picture frame, and comparison [(N-1) modX] the individual sub-picture frame of N picture frame and [(N-1) mod X] individual sub-picture frame of N-1 picture frame are to produce a difference value;
(G) after X picture frame of every reception, difference value corresponding to this X picture frame added up; And
(H) if the difference value summation that step (G) is calculated is not less than this acquiescence critical value, enter this non-energy saver mode.
3. the control method of display screen according to claim 1, is characterized in that: when entering this energy saver mode, this display screen is closed a backlight of one display module, or the brightness of this backlight is reduced.
4. the control method of display screen according to claim 1, is characterized in that: when entering this energy saver mode, this display screen is closed one loudspeaker.
5. the control method of display screen according to claim 1, is characterized in that: when entering this energy saver mode, a control module of this display screen stops transmitting video signal to a display module of this display screen.
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| CN201210226715.XA CN103531153B (en) | 2012-07-03 | 2012-07-03 | The control method of display screen |
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| CN201210226715.XA CN103531153B (en) | 2012-07-03 | 2012-07-03 | The control method of display screen |
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| CN103945255A (en) * | 2014-04-10 | 2014-07-23 | 苏州佳世达电通有限公司 | Displaying device and control method thereof |
| CN105609086A (en) * | 2015-12-30 | 2016-05-25 | 深圳Tcl数字技术有限公司 | Brightness adjustment method and device of display interface |
| CN113053313A (en) * | 2021-03-26 | 2021-06-29 | 苏州科达科技股份有限公司 | OLED screen ghost reduction method, system, device and storage medium |
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| CN103531153B (en) | 2015-09-30 |
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