CN109215550A - Image driving method and its related system - Google Patents
Image driving method and its related system Download PDFInfo
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- CN109215550A CN109215550A CN201710549890.5A CN201710549890A CN109215550A CN 109215550 A CN109215550 A CN 109215550A CN 201710549890 A CN201710549890 A CN 201710549890A CN 109215550 A CN109215550 A CN 109215550A
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- image
- image frame
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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
- G09G3/2007—Display of intermediate tones
- G09G3/2018—Display of intermediate tones by time modulation using two or more time intervals
- G09G3/2022—Display of intermediate tones by time modulation using two or more time intervals using sub-frames
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- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The invention discloses a kind of image driving methods, and it includes obtain an output image signal；According to a N image frame of the output image signal and a N+1 image frame, judge whether there is an image frame difference；And according to the image frame difference, determine an image frame diff area, and correspond to the pixel unit of the image frame diff area with pulsed drive.
Description
Technical field
The present invention relates to a kind of image driving method and its related systems, drive more particularly to a kind of image of suitching type
Method and its related system.
Background technique
In recent years, virtual reality (Virtual Reality, VR) science and technology there has been huge progress and development, and more
It is welcome to get over by masses.Virtual reality science and technology has been applied to various fields at present, for example, entertain, move service, is medical,
Military training etc..According to newest investigation, 20,000,000 virtual reality head-mounted display (Head- have been had more than at present
Mounted Displays, HMDs) it is widely used.In general, cathode-ray tube (Cathode Ray Tube, CRT)
Driving method be pulsed (Impulse Type) driving, liquid crystal display (Liquid-crystal Display, LCD),
The driving method of organic light emitting diode display (Organic Light-Emitting Diode Display, OLED) is to stay
Deposit formula (Hold Type) driving method.Since head-mounted display major part is made of LCD or OLED, and wear-type is shown
Eyes of the device apart from user are quite close, and in this case, the retention formula driving method of LCD or OLED will be so that user be easy to see
To ghost, the discomfort of user is in turn resulted in.However, if with pulsed (Impulse Type) driving wear-type LCD or
The power consumption of head-mounted display will be significantly increased in OLED display.
Therefore, a kind of image driving method how is provided to solve the above problems, it has also become important one of the project of industry.
Summary of the invention
Therefore, the present invention provides a kind of image driving method and its related system, is driven with switching different driving methods
Dynamic image, and then the quality of the preferable dynamic image of user is provided, and reduce power consumption.
The present invention provides a kind of image driving method, and it includes obtain an output image signal；According to the image output
One N image frame of signal and a N+1 image frame judge whether there is an image frame difference；And according to the image frame
Difference determines an image frame diff area, and corresponds to the pixel unit of the image frame diff area with pulsed drive.
The present invention also provides a kind of image drive systems, and it includes a plurality of pixel units；And a control device, coupling
In a plurality of pixel units, for obtaining an output image signal, and according to a N shadow of the output image signal
As frame and a N+1 image frame judge whether there is an image frame difference, and according to the image frame difference, determine an image
Frame difference region corresponds to the pixel unit of the image frame diff area with pulsed drive.
Detailed description of the invention
Fig. 1 is the schematic diagram of one image drive system of the embodiment of the present invention.
Fig. 2 and Fig. 4 is the schematic diagram of output image signal of the embodiment of the present invention.
Fig. 3 is the schematic diagram that one image of the embodiment of the present invention drives process.
Fig. 5 is the schematic diagram of another image drive system of the embodiment of the present invention.
Fig. 6 is the schematic diagram of a data line signal of Fig. 4.
Wherein, the reference numerals are as follows:
10,50 image drive system
102 pixel units
104 control devices
302,304,306,308,310,312,314 step
502 retain drive control device
504 pulsed drive controllers
T1~Tn switch unit
DL data line
Vdd line pressure-wire
SL scan line
D, E image frame diff area
Specific embodiment
Referring to FIG. 1, Fig. 1 is the schematic diagram of an image drive system 10 of the embodiment of the present invention.Image drive system 10
Include a plurality of pixel units 102, a control device 104, a plurality of switch unit T1~Tn, data line DL, pressure-wire Vdd
Line and scan line SL.For example, image drive system 10 can be applied to an organic light emitting diode display (Organic
Light-Emitting Diode Display, OLED), it is liquid crystal display (Liquid-crystal Display, LCD), micro-
Light emitting diode (micro LED) system, but not limited to this.Pixel unit 102 can be single pixel (pixel) or single
Sub-pixel (sub-pixel), such as R, G, B element.Switch unit T1~Tn is coupled to pixel unit 102 and control device 104,
Therefore, control device 104 can be by the driving method for opening or closing switching pixel unit 102 of switch unit T1~Tn, will
Signal is sent to pixel unit 102 by data line DL, pressure-wire Vdd line and scan line SL.Wherein, pressure-wire Vdd
Line is used to provide voltage to image drive system 10 by gate line (Gate Line) (not being illustrated in figure).
Specifically, control device 104 can be used to obtain an output image signal, and according to the one of output image signal
N image frame and a N+1 image frame judge whether there is an image frame diff area D.The person of connecing, with pulsed (Impulse
Type) driving method driving corresponds to the pixel unit 102 of image frame diff area D.That is, when output image signal
When frame difference (when the frame of output image signal is dynamic image), the region changed with pulsed drive image frame.One
In embodiment, control device 104 may include a graphics processor (Graphics Processing Unit, GPU), driver
Processor, display adapter or other relevant video signal handle chip, to obtain the output from a computer system
Video signal, and according to the image frame diff area D of output image signal, unlatching and pass by switch unit T1~Tn
It closes, with pulsed drive image frame diff area D.
For example, referring to FIG. 2, Fig. 2 is the schematic diagram of the output image signal of the embodiment of the present invention.Image output letter
It number include in the 1st image frame of a first time, in the 2nd image frame of one second time and in the 3rd shadow of a third time
As frame.After the control device 104 of image drive system 10 obtains output image signal as shown in Figure 2, the 1st image can determine whether
There are image frame diff area D for frame, the 2nd image frame and the 3rd image frame, and judge image frame diff area D can correspond to
Pixel unit 102 corresponding to switch unit T4~T6.Therefore, control device 104 opens switch unit T4~T6, and with pulse
Formula driving is corresponding to the pixel unit 102 on the gate line of image frame diff area D.That is, control device 104 is opened
Unit T4~T6 is closed, and with the pixel unit 102 on gate line corresponding to pulsed drive image frame diff area D, and
Pixel on gate line corresponding to switch unit T1~T3 and switch unit T7~T9 (i.e. without the region of image difference)
Unit 102 is then still to retain the driving of formula (Hold Type) driving method.It is noted that control device 104 can be according to image frame
Diff area D determines a frequency and an electricity for a switching signal of each pixel on the gate line in the D of image frame diff area
Pressure value.That is, in the above-described embodiments, control device 104 sends out the switch corresponding to each switch unit T4~T6
Signal, includes the switching frequency and voltage value of switch unit T4~T6, on the gate line to compensate image frame diff area D
A color or a gamma curve for each pixel.Therefore, as shown in Fig. 2, switching signal meeting corresponding to switch unit T4~T6
Change with the difference of switching frequency and voltage value.In this way, which image drive system 10 passes through the switch of control device 104
The pixel unit 102 of unit T1~Tn switching driving output image signal, reduces dynamic image and causes the ghost of image output existing
As generating.
Above-mentioned example only schematically illustrate that image drive system 10 of the invention is by 104 control switch of control device
Unit T1~Tn switches the driving method of output image signal, to reduce the phenomenon that dynamic image causes image output to remain.
It is noted that those skilled in the art can be according to different system requirements come appropriately designed image drive system 10, for example, control
The method of device 104 processed switching driving pixel unit, be not limited to the driving of retention formula or pulsed drive or with different frequency and
The switch of voltage value control switch unit, and then the quality of image output frame is improved, and save the consumption of image drive system 10
Electricity is with raising efficiency.
Specifically, the operating method of above-mentioned image drive system 10 can be summarized as image driving process 30, please join
Fig. 3 is examined, Fig. 3 is the schematic diagram that image of the embodiment of the present invention drives process 30.Image driving process 30 comprises the steps of:
Step 302: starting.
Step 304: control device 104 obtains output image signal.
Step 306: control device 104 judges whether according to the N image frame and N+1 image frame of output image signal
With image frame difference, if so, thening follow the steps 308；If it is not, thening follow the steps 312.
Step 308: determining image frame diff area D.
Step 310: control device 104 corresponds to the pixel unit 102 of image frame diff area D with pulsed drive, with
And to retain the pixel unit 102 that formula drives remaining image frame.
Step 312: by the pixel unit 102 of all image frames of output image signal to retain formula driving.
Step 314: terminating.
In one embodiment, elder generation within step 306, is needed after control device 104 obtains image output according to step 304
According to the N image frame and N+1 image frame of output image signal, judge whether with image frame difference, if if, then it holds
Row step 308, to determine image frame diff area D.Then, in the step 310, image frame difference is corresponded to pulsed drive
Pixel unit 102 on the gate line of region D, except retaining formula driving corresponding to the gate line of image frame diff area D
Pixel unit 102 on remaining gate line.If the N image frame and N+1 image frame of output image signal do not have image frame
When difference, then directly to retain all pixels unit 102 that formula drives the gate line of output image signal.For example, it controls
Device 104 can be by switch unit T1~Tn of the pixel unit 102 of the gate line corresponding to image frame diff area D, with not
Same frequency and the driving of voltage unbalanced pulse formula, to drive pixel unit 102.In this way, pass through different frequency and voltage
Pixel unit 102 of the pulsed drive method driving corresponding to the gate line of image frame diff area D, with compensation pixel list respectively
Color, the gamma curve (Gamma Curve) of member 102, and achieve the effect that the power consumption for saving image drive system.It is worth
It is noted that the switch time of switch unit T1~Tn, frequency and voltage value can be by enquiry forms or by control device
104 or computer system determine.
In order to reduce the range in image difference region, further to save the power consumption of image drive system, in another reality
It applies in example, process 30 is driven according to image, control device 104 separately can correspond to the image frame diff area with pulsed drive
The pixel unit 102 of the data line DL of E.Specifically, referring to FIG. 4, the control device 104 when image drive system 10 obtains
After output image signal as shown in Figure 4, it can determine whether that there are image frame differences for the 1st image frame, the 2nd image frame and the 3rd image frame
Region E, since image frame diff area E can be respectively corresponding to pixel unit 102 corresponding to data line DL and gate line, because
This, to drive corresponding pixel unit 102, and then can compensate image by the driving method of control data line DL and gate line
Frame difference region E.
Specifically, referring to FIG. 5, Fig. 5 is the schematic diagram of another image drive system 50 of the embodiment of the present invention.With shadow
As the different place of drive system 10 is, the control device 104 of image drive system 50 also retains drive control device comprising one
502 and a pulsed drive controller 504, for the driving method of the source data (Source Data) of switch data line DL, by
Identical as image drive system 10 in the remaining component of image drive system 50 and its effect, not in this to go forth.By staying
Drive control device 502 and pulsed drive controller 504 are deposited, different driving methods can be switched to drive picture in image drive system 50
Plain unit 102.For example, control device 104 obtain output image signal when, judge the 1st image frame, the 2nd image frame and
After the image frame diff area E of 3rd image frame, control device 104 is opened or is closed with the switching signal of different frequency and voltage value
Switch unit T1~Tn is closed, to compensate the pixel unit 102 of the gate line corresponding to image frame diff area E.Also, image drives
Dynamic system 50 can also retain drive control device 502 and pulsed drive controller 504 by switching, will correspond to image frame difference section
The pixel unit 102 of the data line DL of domain E is with pulsed drive.In this instance, as by pixel unit corresponding to Pixel 3
102 (are linked 5~7 nodes of pulsed drive controller 504 and data line DL) with pulsed drive.Therefore, such as Fig. 6 institute
Show, the schematic diagram of the data line a-signal of the 1st image frame, the 2nd image frame and the 3rd image frame that Fig. 6 is Fig. 4.Control device 104
By switch data line DL and drive control device 502 and the connection of pulsed drive controller 504 are retained, with pulsed drive data line A
The data that signal sends out Pixel 3 maintain the brightness of color and avoid residual to compensate the color of the dynamic image of Pixel 3
The generation of shadow phenomenon, and remaining Pixel 1, Pixel 2, Pixel 4, Pixel 5 maintain retention formula to drive pixel unit
102.In this way, image drive system of the invention is in the case of dynamic image, adjustment, compensation pixel unit color with
The quality of image is maintained, and reduces the range of image frame diff area, power consumption is greatly reduced to achieve the purpose that power saving.
It is noted that previous embodiment is to illustrate spirit of the invention, those skilled in the art works as can be accordingly
Modification appropriate is done, and it is without being limited thereto.For example, the frequency of switch unit opened or closed and its corresponding voltage value be not
It is limited to lookup table mode, can be also determined by user or system requirements, control device can be GPU, display adapter or comprising active
The devices such as picture processing chip of driver, gate pole driver.In addition, the pixel list that compensation image frame diff area corresponds to
The combination or quantity of member, can all make change appropriate, above-mentioned alternate embodiment all belongs to the scope of the present invention.
In conclusion the embodiment of the present invention provides a kind of image driving method and its related system, believed according to image output
Number the difference of image frame switch different driving methods to drive corresponding pixel unit, to provide preferable dynamic image
Quality, and further reduce drive system power consumption.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (12)
1. a kind of image driving method, it includes:
Obtain an output image signal；
According to a N image frame of the output image signal and a N+1 image frame, it is poor to judge whether to have an image frame
It is different；And
According to the image frame difference, an image frame diff area is determined, and the image frame is corresponded to pulsed drive
The pixel unit of diff area.
2. image driving method as described in claim 1, which is characterized in that it is poor to correspond to the image frame with pulsed drive
The step of pixel unit in different region comprising with pulsed drive correspond to the image frame diff area gate line on picture
Plain unit.
3. image driving method as described in claim 1, another Bao Han ︰
According to the image frame diff area, a switch letter of each pixel of the gate line of the image frame diff area is determined
Number.
4. image driving method as claimed in claim 3, which is characterized in that the switching signal includes that the image frame is poor
A frequency and a voltage value for the switching signal of each pixel on the gate line in different region.
5. image driving method as claimed in claim 3, which is characterized in that the switching signal is used to compensate the image frame
A color or a gamma curve for each pixel of the gate line of diff area.
6. image driving method as described in claim 1, which is characterized in that it is poor to correspond to the image frame with pulsed drive
The step of pixel unit in different region, is comprising with the pixel unit of image frame diff area described in pulsed drive.
7. a kind of image drive system, it includes:
A plurality of pixel units；And
One control device is coupled to a plurality of pixel units, for obtaining an output image signal, and according to described defeated
A N image frame of video signal and a N+1 image frame judge whether there is an image frame difference out, and according to the shadow
As frame difference, an image frame diff area is determined, the pixel unit of the image frame diff area is corresponded to pulsed drive.
8. image drive system as claimed in claim 7, which is characterized in that the control device is corresponded to pulsed drive
The pixel unit of gate line on the image frame diff area.
9. image drive system as claimed in claim 7, which is characterized in that the control device is according to the image frame difference
Region determines a switching signal of each pixel of the gate line of the image frame diff area.
10. image drive system as claimed in claim 9, which is characterized in that the switching signal includes the image frame
A frequency and a voltage value for the switching signal of each pixel on the gate line of diff area.
11. image drive system as claimed in claim 9, which is characterized in that the switching signal is for compensating the shadow
As the color or a gamma curve of each pixel of the gate line in frame difference region.
12. image drive system as claimed in claim 7, which is characterized in that the control device is described in pulsed drive
The pixel unit of image frame diff area.
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| CN201710549890.5A CN109215550A (en) | 2017-07-07 | 2017-07-07 | Image driving method and its related system |
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| CN201710549890.5A CN109215550A (en) | 2017-07-07 | 2017-07-07 | Image driving method and its related system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114466153A (en) * | 2022-04-13 | 2022-05-10 | 深圳时识科技有限公司 | Self-adaptive pulse generation method and device, brain-like chip and electronic equipment |
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