CN101458903B - Compensation device, method and electronic system applying the compensation device - Google Patents
Compensation device, method and electronic system applying the compensation device Download PDFInfo
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- CN101458903B CN101458903B CN2007103021480A CN200710302148A CN101458903B CN 101458903 B CN101458903 B CN 101458903B CN 2007103021480 A CN2007103021480 A CN 2007103021480A CN 200710302148 A CN200710302148 A CN 200710302148A CN 101458903 B CN101458903 B CN 101458903B
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Abstract
A compensation device provides data signals for display panel, while the data signals have an overdrive drive component. The compensation device comprises a memory unit and a control unit, wherein the memory unit stores a first and a second overdrive drive signal, and the control unit detects the first frame frequency of a first image pack, and uses the first or the second overdrive drive signal as an overdrive drive component according to the detection result.
Description
Technical field
The present invention relates to a kind of compensation system, particularly a kind of compensation system that the different signal of overdriving is provided.
Background technology
Lightly, the LCD of power saving is widely used on portable electronic product and the flat-surface television.The drive integrated circult of LCD (Integrated Circuit; IC) comprise gate pole driver (gate driver) and source electrode driver (source driver).Source electrode driver with 8 (bit) is an example, and it can provide 256 GTG values.Figure 1A is the synoptic diagram of GTG value.As shown in the figure, when time t1, the GTG value of the liquid crystal molecule of LCD is 40.When time t2, the GTG value of liquid crystal molecule just is varied to 130.When the display frequency of LCD was higher, the speed that liquid crystal molecule rotates may not catch up with the real required pace of change of LCD.
For addressing the above problem, prior art utilization (overdrive) mode of overdriving compensates the speed that liquid crystal molecule changes.Figure 1B is the synoptic diagram of the known mode of overdriving.As shown in the figure, when time t4, because liquid crystal molecule receives higher GTG value (as 150), so can rotate apace.Then, when time t5, normal GTG value (as 130) is provided for again the liquid crystal molecule.
Because the mistiming between time t1 and the t2 greater than the mistiming between time t3 and the t5, therefore, can be accelerated the speed that liquid crystal molecule changes by prior art.Yet under different frame frequency (frame rate), the time that discharges and recharges of liquid crystal molecule is also inequality.If use fixing over-drive value, then can't accomplish best compensation effect.In Figure 1B, over-drive value (OD) is 20 (150-130).
Summary of the invention
The invention provides a kind of compensation system, be used for providing data-signal to display panel.This data-signal has the composition of overdriving.Compensation system of the present invention comprises, mnemon with and control module.Mnemon stores first and second signals of overdriving.Control module detects first frame frequency of the first image package, and according to testing result, and this first or second is overdrived signal as this composition of overdriving.
Compensation system of the present invention, wherein this control module comprises: microprocessor, detect this first frame frequency, and according to testing result, gather this first or second signal of overdriving; And over-driving device, the signal of overdriving that this microprocessor is gathered is as this composition of overdriving.
Compensation system of the present invention, wherein this control module comprises: microprocessor, detect this first frame frequency; And over-driving device, according to testing result, by gathering this first or second signal of overdriving in this mnemon, and collection result is offered this display panel.
Compensation system of the present invention, wherein when this first frame frequency equals first frequency, this control module first is overdrived signal as this composition of overdriving with this, and when this first frame frequency equaled second frequency, this control module second was overdrived signal as this composition of overdriving with this.
Compensation system of the present invention, wherein this first frequency is less than this second frequency, and this first overdrives signal less than this second signal of overdriving.
Compensation system of the present invention, wherein this control module also detects second frame frequency of the second image package, when the difference on the frequency between this first and second frame frequency during less than predeterminated frequency, then this first is overdrived signal as this composition of overdriving.
Compensation system of the present invention, wherein this control module also detects first picture data of this first image package and second picture data of this second image package, when the difference between this first and second picture data during, then this first is overdrived signal as this composition of overdriving less than default value.
Compensation system of the present invention, wherein this compensation system is scaler (scaler) or time schedule controller (timing controller).
The present invention also provides a kind of electronic system, comprises display panel and compensation system.Display panel presents picture according to data-signal.Compensation system is used to provide data-signal.Data-signal has the composition of overdriving.Compensation system comprises, mnemon and control module.Mnemon stores first and second signal of overdriving.Control module detects first frame frequency of the first image package, and according to testing result, and this first or second is overdrived signal as this composition of overdriving.
Electronic system of the present invention, wherein this control module comprises: microprocessor, detect this first frame frequency, and according to testing result, gather this first or second signal of overdriving; And over-driving device, the signal of overdriving that this microprocessor is gathered is as this composition of overdriving.
Electronic system of the present invention, wherein this control module comprises: microprocessor, detect this first frame frequency; And over-driving device, according to testing result, by gathering this first or second signal of overdriving in this mnemon, and collection result is offered this display panel.
Electronic system of the present invention, wherein when this first frame frequency equals first frequency, this control module first is overdrived signal as this composition of overdriving with this, and when this first frame frequency equaled second frequency, this control module second was overdrived signal as this composition of overdriving with this.
Electronic system of the present invention, wherein this first frequency is less than this second frequency, and this first overdrives signal less than this second signal of overdriving.
Electronic system of the present invention, wherein this control module also detects second frame frequency of the second image package, when the difference on the frequency between this first and second frame frequency during less than predeterminated frequency, then this first is overdrived signal as this composition of overdriving.
Electronic system of the present invention, wherein this control module also detects first picture data of this first image package and second picture data of this second image package, when the difference between this first and second picture data during, then this first is overdrived signal as this composition of overdriving less than default value.
Electronic system of the present invention, wherein this compensation system is scaler or time schedule controller.
The present invention also provides a kind of compensation method, is used to provide data-signal to display panel.Data-signal has the composition of overdriving.Compensation method of the present invention comprises, receives the first image package; Detect first frame frequency of this first image package; According to testing result, gather first or second signal of overdriving; And this first or second is overdrived signal as this composition of overdriving.
Compensation method of the present invention also comprises: receive the second image package; And second frame frequency that detects this second image package.
Compensation method of the present invention wherein when the difference on the frequency between this first and second frame frequency during less than predeterminated frequency, first is overdrived signal as this composition of overdriving with this.
Compensation method of the present invention also comprises: first picture data that detects this first image package; Detect second picture data of this second image package; And when the difference of this first and second picture data during less than default value, then this first overdrives signal as this composition of overdriving.
The present invention can provide over-drive value according to different frame frequencies, thereby reaches best compensation effect.
For above and other objects of the present invention, feature and advantage can be become apparent, cited below particularlyly go out preferred embodiment, and conjunction with figs., be described in detail below:
Description of drawings
Figure 1A is the synoptic diagram of GTG value.
Figure 1B is the synoptic diagram of the known mode of overdriving.
Fig. 2 A is the synoptic diagram of electronic system of the present invention.
Fig. 2 B is another possibility embodiment of electronic system of the present invention.
Fig. 3 A is the possible embodiment of control module of the present invention.
Fig. 3 B is the possible embodiment of control module of the present invention.
Fig. 4 is the process flow diagram of compensation method of the present invention.
Embodiment
Fig. 2 A is the synoptic diagram of electronic system of the present invention.As shown in the figure, electronic system 200 comprises, display panel 210 and compensation system 220.Compensation system 220 receives image package S
V1, and produce data-signal S
DDisplay panel 210 is again according to data-signal S
DAnd present picture, and wherein, data-signal S
DHas the composition of overdriving.
In the present embodiment, compensation system 220 is time schedule controllers, the image package S that it received
V1From scaler 230.Display panel 210 is according to data-signal S that time schedule controller produced
D, and present corresponding picture.Fig. 2 B is another possibility embodiment of electronic system of the present invention.In the present embodiment, compensation system 220 is scaler, and it receives outside image package, and with the data-signal S that is produced
DOffer time schedule controller 240.Time schedule controller 240 is again according to data-signal S
D, and make display panel 210 present picture.
With reference to Fig. 2 A, compensation system 220 has mnemon 221 and control module 222.Mnemon 221 stores the signal OD that overdrives
1And OD
2For convenience of description, in the present embodiment, mnemon 221 only stores two signals of overdriving, yet is not to be used to limit the present invention.In other embodiments, mnemon 221 can store the signal of overdriving more than three according to actual demand.In another possibility embodiment, mnemon 221 can store computing formula.This computing formula can calculate the suitable signal of overdriving according to the characteristic of liquid crystal molecule.
In another possibility embodiment, control module 222 also detects image package S
V2Frame frequency.Suppose image package S
V1Have first frame frequency, and image package S
V2Has second frame frequency.When the difference on the frequency between first and second frame frequency during less than predeterminated frequency, the control module 222 signal OD that will overdrive then
1As data-signal S
DThe composition of overdriving.When the difference on the frequency between first and second frame frequency during greater than this predeterminated frequency, the control module 222 signal OD that will overdrive then
2As data-signal S
DThe composition of overdriving.
In other embodiments, control module 222 can detect image package S
V1And S
V2Picture data.Suppose image package S
V1Have first picture data, and image package S
V2Has second picture data.When the difference between first and second picture data during less than default value, the control module 222 signal OD that will overdrive then
1As data-signal S
DThe composition of overdriving.When the difference between first and second picture data during greater than this default value, the control module 222 signal OD that will overdrive then
2As data-signal S
DThe composition of overdriving.
Fig. 3 A is the possible embodiment of control module of the present invention.As shown in the figure, control module 222 comprises, microprocessor 310 and over-driving device 320.Microprocessor 310 detects image package S
V1And S
V2, and according to testing result by in the mnemon 221, gather the signal OD that overdrives
1Or OD
2Over-driving device 320 is according to the collection result of microprocessor 310, and signal OD will overdrive
1Or OD
2As data-signal S
DThe composition of overdriving.
Fig. 3 B is the possible embodiment of control module of the present invention.In the present embodiment, over-driving device 320 is according to the testing result of microprocessor 310, by gathering the signal OD that overdrives in the mnemon 221
1Or OD
2, and collection result offered display panel 210.In other embodiments, microprocessor 310, over-driving device 320 and mnemon 221 can be integrated into a chip.
Fig. 4 is the process flow diagram of compensation method of the present invention.Compensation method of the present invention can provide data-signal to display panel, and wherein, this data-signal has the composition of overdriving.At first, receive image package (step S410).In another possibility embodiment, can receive a plurality of image packages.
Then, detect received image package (step S420).In possibility embodiment, can detect the frame frequency or the picture data of image package by microprocessor.Then, according to testing result, gather first or second signal (step S430) of overdriving.At last, with the overdrive composition (step S440) of signal of being gathered of overdriving as data-signal.
In may embodiment, when the frame frequency of image package equals first frequency (as 60Hz), just with first composition of overdriving of signal of overdriving as data-signal.When the frame frequency of image package equals second frequency (as 75Hz), just with second the overdrive composition of signal of overdriving as data-signal.
In another may embodiment, if when a plurality of image packages are detected, then can be according to the difference between these image packages, gather first or second signal of overdriving.For example, when the difference on the frequency between the frame frequency of two image packages during, then with first the overdrive composition of signal of overdriving as data-signal less than predeterminated frequency.When the difference on the frequency between the frame frequency of two image packages during, then with second the overdrive composition of signal of overdriving as data-signal greater than this predeterminated frequency.
In other embodiments, can be according to the picture data of two image packages, gather first or second signal of overdriving.When the difference between the picture data of two image packages during, then with first the overdrive composition of signal of overdriving as data-signal less than default value.When the difference between the picture data of two image packages during, then with second the overdrive composition of signal of overdriving as data-signal less than this default value.
Though the present invention discloses as above with preferred embodiment; so it is not to be used to limit the present invention, any those skilled in the art, under the premise without departing from the spirit and scope of the present invention; can do various changes and modification, so protection scope of the present invention is when being as the criterion of limiting with claim.
The primary clustering symbol description
200 electronic systems; 210 display panels;
220 compensation systems; 230 scaler;
240 time schedule controllers; 221 mnemons;
222 control modules; S
V1, S
V2The image package;
OD
1, OD
2Drive signal; S
DData-signal;
310 microprocessors; 320 over-driving devices.
Claims (20)
1. a compensation system is used for providing data-signal to display panel, and described data-signal has the composition of overdriving, and described compensation system comprises:
Mnemon stores first and second signal of overdriving; And
Control module detects first frame frequency of the first image package, and according to testing result, overdrives signal as the described composition of overdriving with described first or second.
2. compensation system according to claim 1, wherein said control module comprises:
Microprocessor detects described first frame frequency, and according to testing result, gathers described first or second signal of overdriving; And
Over-driving device, the signal of overdriving that described microprocessor is gathered is as the described composition of overdriving.
3. compensation system according to claim 1, wherein said control module comprises:
Microprocessor detects described first frame frequency; And
Over-driving device according to testing result, by gathering described first or second signal of overdriving in the described mnemon, and offers described display panel with collection result.
4. compensation system according to claim 1, wherein when described first frame frequency equals first frequency, described control module is overdrived signal as the described composition of overdriving with described first, when described first frame frequency equaled second frequency, described control module was overdrived signal as the described composition of overdriving with described second.
5. compensation system according to claim 4, wherein said first frequency be less than described second frequency, and described first overdrives signal less than described second signal of overdriving.
6. compensation system according to claim 1, wherein said control module also detects second frame frequency of the second image package, when the difference on the frequency between described first and second frame frequency during, then overdrive signal as the described composition of overdriving with described first less than predeterminated frequency.
7. compensation system according to claim 1, wherein said compensation system are scaler or time schedule controller.
8. a compensation system is used for providing data-signal to display panel, and described data-signal has the composition of overdriving, and described compensation system comprises: mnemon stores first and second signal of overdriving; And control module, described control module detects first picture data of the first image package and second picture data of the second image package, when the difference between described first and second picture data during, then overdrive signal as the described composition of overdriving with described first less than default value.
9. electronic system comprises:
Display panel presents picture according to data-signal; And
Compensation system is used to provide described data-signal, and described data-signal has the composition of overdriving, and described compensation system comprises:
Mnemon stores first and second signal of overdriving; And
Control module detects first frame frequency of the first image package, and according to testing result, overdrives signal as the described composition of overdriving with described first or second.
10. electronic system according to claim 9, wherein said control module comprises:
Microprocessor detects described first frame frequency, and according to testing result, gathers described first or second signal of overdriving; And
Over-driving device, the signal of overdriving that described microprocessor is gathered is as the described composition of overdriving.
11. electronic system according to claim 9, wherein said control module comprises:
Microprocessor detects described first frame frequency; And
Over-driving device according to testing result, by gathering described first or second signal of overdriving in the described mnemon, and offers described display panel with collection result.
12. electronic system according to claim 9, wherein when described first frame frequency equals first frequency, described control module is overdrived signal as the described composition of overdriving with described first, when described first frame frequency equaled second frequency, described control module was overdrived signal as the described composition of overdriving with described second.
13. electronic system according to claim 12, wherein said first frequency be less than described second frequency, described first overdrives signal less than described second signal of overdriving.
14. electronic system according to claim 9, wherein said control module also detects second frame frequency of the second image package, when the difference on the frequency between described first and second frame frequency during, then overdrive signal as the described composition of overdriving with described first less than predeterminated frequency.
15. electronic system according to claim 9, wherein said compensation system are scaler or time schedule controller.
16. an electronic system comprises:
Display panel presents picture according to data-signal; And
Compensation system is used to provide described data-signal, and described data-signal has the composition of overdriving, and described compensation system comprises:
Mnemon stores first and second signal of overdriving; And
Control module detects first picture data of the first image package and second picture data of the second image package, when the difference between described first and second picture data during less than default value, then overdrives signal as the described composition of overdriving with described first.
17. a compensation method is used for providing data-signal to display panel, described data-signal has the composition of overdriving, and described compensation method comprises the following steps:
Receive the first image package;
Detect first frame frequency of the described first image package;
According to testing result, gather first or second signal of overdriving; And
Overdrive signal as the described composition of overdriving with described first or second.
18. compensation method according to claim 17 also comprises:
Receive the second image package; And
Detect second frame frequency of the described second image package.
19. compensation method according to claim 18 wherein when the difference on the frequency between described first and second frame frequency during less than predeterminated frequency, is overdrived signal as the described composition of overdriving with described first.
20. a compensation method is used for providing data-signal to display panel, described data-signal has the composition of overdriving, and described compensation method comprises the following steps:
Receive the first image package;
Detect first picture data of the described first image package;
Receive the second image package;
Detect second picture data of the described second image package; And
When the difference of described first and second picture data during less than default value, then described first overdrives signal as the described composition of overdriving.
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| CN2007103021480A CN101458903B (en) | 2007-12-14 | 2007-12-14 | Compensation device, method and electronic system applying the compensation device |
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| CN101458903B true CN101458903B (en) | 2011-12-07 |
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| CN110288958B (en) * | 2019-06-11 | 2021-10-01 | 重庆惠科金渝光电科技有限公司 | Display panel driving method, driving device and display device |
| CN112908252B (en) * | 2021-01-26 | 2022-08-23 | 合肥维信诺科技有限公司 | Display device and compensation method of display panel |
| CN117174041A (en) * | 2022-09-22 | 2023-12-05 | 惠州视维新技术有限公司 | Overdrive device, overdrive method and display device |
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| CN1588524A (en) * | 2004-08-20 | 2005-03-02 | 友达光电股份有限公司 | Over driving voltage producing method in liquid crystal driving system |
| CN1828713A (en) * | 2005-03-03 | 2006-09-06 | 奇美电子股份有限公司 | Overdrive device and its method |
| CN1991953A (en) * | 2005-12-29 | 2007-07-04 | 晨星半导体股份有限公司 | Liquid crystal reaction time adjusting device |
| CN1996457A (en) * | 2006-01-06 | 2007-07-11 | 晨星半导体股份有限公司 | LCD drive device and drive method therefor |
-
2007
- 2007-12-14 CN CN2007103021480A patent/CN101458903B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1588524A (en) * | 2004-08-20 | 2005-03-02 | 友达光电股份有限公司 | Over driving voltage producing method in liquid crystal driving system |
| CN1828713A (en) * | 2005-03-03 | 2006-09-06 | 奇美电子股份有限公司 | Overdrive device and its method |
| CN1991953A (en) * | 2005-12-29 | 2007-07-04 | 晨星半导体股份有限公司 | Liquid crystal reaction time adjusting device |
| CN1996457A (en) * | 2006-01-06 | 2007-07-11 | 晨星半导体股份有限公司 | LCD drive device and drive method therefor |
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