CN1645314A - Adjusting system and method for video frequency signal time sequence - Google Patents
Adjusting system and method for video frequency signal time sequence Download PDFInfo
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- CN1645314A CN1645314A CN 03160325 CN03160325A CN1645314A CN 1645314 A CN1645314 A CN 1645314A CN 03160325 CN03160325 CN 03160325 CN 03160325 A CN03160325 A CN 03160325A CN 1645314 A CN1645314 A CN 1645314A
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Abstract
An adjusting system of video signal time sequence for computer computer system features that. It receives video signal and comparing it with standard time sequence, then outputs calibrated signal for adjusting time sequence of video signal outputted form display card. The computer system consists of display and host which outputs video signal by display card in it.
Description
Technical field
The present invention is about the Adjustment System and the method thereof of a kind of vision signal sequential (timing), particularly about a kind of Adjustment System and method thereof of vision signal sequential of VESA standard.
Background technology
The VESA tissue is devoted to formulate the display standard interface of industry member, with the compatibility of guaranteeing display product and the development that promotes industry.VESA time sequence of display device standard (monitor timing standard) is used for defining the vision signal sequential of display.Vision signal comprises horizontal-drive signal Hsync (HorizontalSynchronization), vertical synchronizing signal Vsync (Vertical Synchronization) and video data etc.Below elaborate with regard to the sequential of horizontal-drive signal Hsync.
Fig. 1 is the synoptic diagram of horizontal-drive signal Hsync.The sequential of horizontal-drive signal Hsync comprises that the back is along time (Back porch), upper left border time (Top/Left Border), border, bottom right time (Bottom/Right Border) and leading edge time (Front Porch).One of display is horizontal to scan the time to horizontal-drive signal Hsync with deciding, when horizontal-drive signal Hsync is converted to electronegative potential, represent that a horizontal line has scanned to finish, then after a lock in time, be denoted as ts, begin to scan next bar horizontal line again.When beginning to scan a horizontal line, need through a back be denoted as tb after the time (Back porch), display received is only effective video data (Active Video Data); After passing through the upper left border time (Top/Left Border) again, be denoted as ttl, display received is only addressable video data (Addressable Video), just in fact is presented at the video on the screen, and its time-tagging of keeping is ta; Then, be denoted as tbr, just finish the effective video data again through border, bottom right time (Bottom/Right Border); After then passing through leading edge time (Front Porch) again, be denoted as tf, just finish scanning present horizontal line.
2A figure is the block scheme of existing computer system.Computer system 10 comprises main frame 11 and display 13, and wherein main frame 11 is connected with display 13 by signal wire 14.Display card 12 in the main frame 11 is by signal wire 14 outputting video signal M, and 13 of displays are according to vision signal M display frame.Vision signal M comprises video data, horizontal-drive signal Hsync and vertical synchronizing signal Vsync.
2B figure is existing flow for displaying figure.At first, receive the demonstration specification, shown in step 21.Show that specification comprises refreshing frequency (refresh rate) and resolution (resolution).Refreshing frequency for example is 60Hz, represents to show in one second 60 frames (frame).Resolution for example is 1024 * 768, and expression has 768 horizontal lines, and every horizontal line has 1024 pixels (pixel).Then, according to the vision signal sequential that shows specification calculating VESA standard, shown in step 23.Then, display card 12 is promptly according to this VESA standard time sequence outputting video signal M, shown in step 25.Then, display 13 is promptly according to the vision signal M display frame that receives, shown in step 27.
Summary of the invention
Existing flow for displaying is open loop (open loop), so display card 12 needs accurately according to VESA display timing generator standard output synchronizing signal, to guarantee the quality of display frame.Yet each display card is because the nuance of spare part makes the vision signal sequential and the VESA standard time sequence of output that error be arranged, and makes the shown frame bad of display.Therefore, the existing practice needs to observe with oscillograph the vision signal sequential of display card output before display card dispatches from the factory, and then is adjusted, and promotes display quality to guarantee to meet the VESA standard.But, in the ordinary consumer hand that dispatches from the factory after, can't observe and artificial adjustment by oscillograph.If adjusting, the company that sends back to again loses time especially and required cost.
In view of this, purpose of the present invention is exactly that a kind of devices and methods therefor that can adjust the display timing generator of synchronizing signal easily is being provided.
According to purpose of the present invention, a kind of computer system with Adjustment System of vision signal sequential is proposed, comprise display, main frame and Adjustment System.Display card outputting video signal in the main frame.Adjustment System is used for receiving video signals, with the standard time sequence of setting relatively, and export the adjustment signal in view of the above, to adjust the vision signal sequential of display card output.
According to another object of the present invention, a kind of method of adjustment of vision signal sequential is proposed.At first, receive the demonstration specification, show that wherein specification comprises refreshing frequency and resolution.Then, according to showing that specification produces standard time sequence.Then, outputting video signal.Then, detect vision signal and also export switch data in view of the above.Then with switch data and standard time sequence relatively after, output adjustment signal.At last, adjust the sequential of vision signal according to the adjustment signal.
The Adjustment System of vision signal sequential disclosed in this invention and method thereof feed back to display card by the method for closed loop with vision signal, with the vision signal sequential of adjustment display card output, thereby avoid causing time because of the otherness of the assembly of display card.The present invention can be used for the test of display card before dispatching from the factory, the error of the outputting video signal that causes because of the component differences of display card with compensation, and improve the output quality of display card.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. elaborate.
Description of drawings
Fig. 1 is the synoptic diagram of horizontal-drive signal Hsync.
Fig. 2 A is the existing computer system block scheme.
Fig. 2 B is existing flow for displaying figure.
Fig. 3 A illustrates a kind of computer system synoptic diagram with Adjustment System of vision signal sequential according to the preferred embodiment of the present invention.
Fig. 3 B is the block scheme of Adjustment System.
Fig. 4 is the method for adjustment process flow diagram of vision signal sequential.
Description of reference numerals
10,30: computer system
11,31: main frame
12,32: display card
13,34: display
14,39: signal wire
33: Adjustment System
35: sensor
37: the adjustment control program
Embodiment
Please refer to 3A figure, it illustrates a kind of computer system synoptic diagram with Adjustment System of vision signal sequential according to the preferred embodiment of the present invention.Computer system 30 comprises main frame 31, display 34 and signal wire 39.Main frame 31 is connected with display 34 by signal wire 39.Main frame 31 comprises display card 32 and Adjustment System 33.Display card 32 according to the VESA standard time sequence via signal wire 39 outputting video signal M.34 of displays are according to vision signal M display frame.Adjustment System 33 receives the vision signal M of feedback, with its with inner VESA standard time sequence relatively after, export adjustment signal N to display card 32.32 sequential of adjusting the vision signal M of output according to adjustment signal N of display card.Signal wire 39 is a Y type signal wire, is used for outputting video signal M to display 34, and vision signal M is fed back to Adjustment System 33.
Vision signal M comprises video data, horizontal-drive signal and vertical synchronizing signal at least.Video data comprises redness (R) signal, green (G) signal and blueness (B) signal.After Adjustment System 33 is converted into switch data (comprising the sequential value) with vision signal, compare with inner VESA standard time sequence again, check whether the error that is caused because of display card 32 is arranged, export adjustment signal N then in view of the above to display card 32.After display card 32 receives adjustment signal N, adjust the sequential of the vision signal M of output more in view of the above.
Fig. 3 B is the block scheme of Adjustment System.Adjustment System 33 comprises sensor 35 and adjustment control program 37.Sensor 35 receiving video signals M are translated into switch data, and can direct value (for example standard time sequence) with inner specific standard compare.Adjustment control program 37 is software or firmware structure, after receiving switch data, with its with inner VESA standard time sequence relatively after, output adjustment signal is with the sequential of the vision signal M that adjusts display card and export.
Sensor 35 for example is 8255 multi-functional IO cards.8255 multi-functional IO cards can signal calculated be changed the required time, therefore can learn each sequential of vision signal M, and export adjustment control program 37 to.Adjustment control program 37 will be compared by each sequential and the VESA standard time sequence of sensor 35 gained, exports adjustment signal N in view of the above to display card 32.Display card 32 is adjusted the sequential of the vision signal M of output again according to adjustment signal N.In addition, sensor 35 can also be made of microcontroller (MicroController), calculates each sequential of vision signal M by microcontroller.
Fig. 4 is the method for adjustment process flow diagram of vision signal sequential.At first receive the demonstration specification, shown in step 41.Show that specification comprises refreshing frequency (refresh rate) and resolution (resolution).Then according to showing specification calculating VESA standard time sequence, shown in step 43.Then, display card 32 outputting video signal M are shown in step 45.Display 34 receiving video signals M are with display frame, shown in step 46.Simultaneously, sensor 35 receiving video signals M, each sequential of detection vision signal M is exported switch data, in view of the above shown in step 47.Adjustment control program 37 receives switch datas, with its with inner VESA standard time sequence relatively after, export adjustment signal N, shown in step 49.Get back to step 45 then, display card 32 is adjusted outputting video signal M according to adjustment signal N again.
The Adjustment System of the disclosed vision signal sequential of the above embodiment of the present invention and method thereof feed back to display card by the method for closed loop with vision signal, with the vision signal sequential of adjustment display card output, thereby avoid causing time because of the otherness of the assembly of display card.The present invention can be used for the test of display card before dispatching from the factory, the error of the outputting video signal that causes because of the component differences of display card with compensation, and improve the output quality of display card.
In sum, though the present invention by preferred embodiment openly as above, so it is not to be used for limiting the present invention, any technician of this area, under the situation of the spirit and scope of the present invention that do not break away from claims and limited, can carry out the various modifications of form and details to it.
Claims (20)
1. the Adjustment System of a vision signal sequential is used for the main frame of computer system, the display card outputting video signal of this main frame, and this computer system more comprises display, according to this vision signal display frame, this Adjustment System comprises:
Sensor receives this vision signal, the output switch data; And
The adjustment control program receives this switch data, with the standard time sequence of setting relatively after, output adjustment signal is with the sequential of this vision signal of adjusting this display card output.
2. as the Adjustment System of 1 described vision signal sequential of claim the, wherein this computer system more comprises Y type signal wire, is sent to this display and this Adjustment System simultaneously with this vision signal with this display card output.
3. as the Adjustment System of 1 described vision signal sequential of claim the, wherein this vision signal comprises video data, horizontal-drive signal and vertical synchronizing signal at least.
4. as the Adjustment System of 3 described vision signal sequential of claim the, wherein this video data comprises danger signal, green and blue signal.
5. as the Adjustment System of 4 described vision signal sequential of claim the, wherein this sensor is used for calculating the sequential of this danger signal, this green, this blue signal, this horizontal-drive signal and this vertical synchronizing signal.
6. as the Adjustment System of 4 described vision signal sequential of claim the, wherein this sensor comprises that microcontroller is with the sequential of calculating this danger signal, this green, this blue signal, this horizontal-drive signal and this vertical synchronizing signal and export this switch data in view of the above.
7. as the Adjustment System of 1 described vision signal sequential of claim the, wherein this standard time sequence is according to showing that specification produces, and this demonstration specification comprises refreshing frequency and resolution.
8. computer system comprises:
Display;
Main frame comprises display card, this display card outputting video signal, and this display is according to this vision signal display frame; And
Adjustment System receives this vision signal and export the adjustment signal in view of the above, comprises the sequential of this vision signal that is used for adjusting this display card output.
9. as 8 described computer systems of claim the, wherein this Adjustment System comprises:
Sensor receives this vision signal, the output switch data; And
The adjustment control program receives this switch data, with itself and this standard time sequence relatively after, export the sequential of this adjustment signal with this vision signal of adjusting this display card output.
10. more comprise as 8 described computer systems of claim the:
Y type signal wire is used for this vision signal of this display card output is sent to this display and this Adjustment System simultaneously.
11. as 8 described computer systems of claim the, wherein this vision signal comprises video data, horizontal-drive signal and vertical synchronizing signal at least.
12. as 11 described computer systems of claim the, wherein this video data comprises danger signal, green and blue signal.
13. as 12 described computer systems of claim the, wherein this sensor is used for calculating this danger signal, this green, this blue signal, this horizontal-drive signal and this vertical synchronizing signal sequential.
14. as 12 described computer systems of claim the, wherein this sensor comprises that microcontroller is to calculate this danger signal, this green, this blue signal, this horizontal-drive signal and this vertical synchronizing signal sequential.
15. as 8 described computer systems of claim the, wherein this standard time sequence is according to showing that specification produces, this demonstration specification comprises refreshing frequency and resolution.
16. the method for adjustment of a vision signal sequential comprises:
Receive the demonstration specification, wherein this demonstration specification comprises refreshing frequency and resolution;
Show that according to this specification produces standard time sequence;
Outputting video signal;
Detect this vision signal and transform the output switch data;
With this switch data and this standard time sequence relatively after, output adjustment signal; And
Adjust the sequential of this vision signal according to this adjustment signal.
17. as the method for adjustment of 16 described vision signal sequential of claim the, wherein this vision signal comprises video data, horizontal-drive signal and vertical synchronizing signal at least.
18. as the method for adjustment of 17 described vision signal sequential of claim the, wherein this video data comprises danger signal, green and blue signal.
19. as the method for adjustment of 17 described vision signal sequential of claim the, wherein this detection step is also exported this switch data in view of the above for the sequential of calculating this danger signal, this green, this blue signal, this horizontal-drive signal and this vertical synchronizing signal.
20. as the method for adjustment of 16 described vision signal sequential of claim the, wherein this demonstration specification comprises refreshing frequency and resolution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031603254A CN100416487C (en) | 2003-09-26 | 2003-09-26 | Adjusting system and method for video frequency signal time sequence |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB031603254A CN100416487C (en) | 2003-09-26 | 2003-09-26 | Adjusting system and method for video frequency signal time sequence |
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| Publication Number | Publication Date |
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| CN1645314A true CN1645314A (en) | 2005-07-27 |
| CN100416487C CN100416487C (en) | 2008-09-03 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100356360C (en) * | 2005-08-31 | 2007-12-19 | 威盛电子股份有限公司 | Time sequence adjusting circuit and method |
| CN102231267A (en) * | 2011-04-18 | 2011-11-02 | 友达光电股份有限公司 | Method for synchronizing horizontal synchronizing signal and display |
| CN107862154A (en) * | 2017-11-29 | 2018-03-30 | 成都锐成芯微科技股份有限公司 | A kind of timing adjusting method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH086683A (en) * | 1994-06-20 | 1996-01-12 | Nec Niigata Ltd | Personal computer |
| JP4527207B2 (en) * | 1997-04-14 | 2010-08-18 | Ｎｅｃディスプレイソリューションズ株式会社 | Display device |
| DE19801732A1 (en) * | 1998-01-19 | 1999-07-22 | Thomson Brandt Gmbh | Circuit for processing synchronous signals |
-
2003
- 2003-09-26 CN CNB031603254A patent/CN100416487C/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100356360C (en) * | 2005-08-31 | 2007-12-19 | 威盛电子股份有限公司 | Time sequence adjusting circuit and method |
| CN102231267A (en) * | 2011-04-18 | 2011-11-02 | 友达光电股份有限公司 | Method for synchronizing horizontal synchronizing signal and display |
| CN102231267B (en) * | 2011-04-18 | 2014-06-04 | 友达光电股份有限公司 | Method for synchronizing horizontal synchronizing signal and display |
| US9236031B2 (en) | 2011-04-18 | 2016-01-12 | Au Optronics Corp. | Method for synchronizing a display horizontal synchronization signal with an external horizontal synchronization signal |
| CN107862154A (en) * | 2017-11-29 | 2018-03-30 | 成都锐成芯微科技股份有限公司 | A kind of timing adjusting method |
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| Publication number | Publication date |
|---|---|
| CN100416487C (en) | 2008-09-03 |
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Granted publication date: 20080903 |