CN102654993A - VGA (Video Graphics Array) signal display correction method of spliced display screen - Google Patents
VGA (Video Graphics Array) signal display correction method of spliced display screen Download PDFInfo
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- CN102654993A CN102654993A CN2011100525260A CN201110052526A CN102654993A CN 102654993 A CN102654993 A CN 102654993A CN 2011100525260 A CN2011100525260 A CN 2011100525260A CN 201110052526 A CN201110052526 A CN 201110052526A CN 102654993 A CN102654993 A CN 102654993A
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Abstract
The invention discloses a VGA (Video Graphics Array) signal display correction method of a spliced display screen. The method comprises the following steps of: respectively displaying a to-be-corrected VGA signal on each display unit of the spliced display screen; manually regulating a signal parameter value of the VGA signal input into a reference display unit until completely and correctly displaying an image on the reference display unit, taking the VGA signal parameter value obtained at the moment as a VGA signal parameter reference value, and storing the VGA signal parameter reference value in a memory of the reference display unit; reading the VGA signal parameter reference value stored in the memory of the reference display unit by a master control device, transmitting the VGA signal parameter reference value to the rest display units of the spliced display screen, and controlling each of the rest display units to automatically set the VGA signal parameter to be consistent with the VGA signal parameter reference value. The method can be used for conveniently and quickly correcting the VGA signal input into each display unit of the spliced display screen.
Description
Technical field
The image that the present invention relates to mosaic display screen shows bearing calibration.
Background technology
As the VGA signal of one of signal source of mosaic display screen, employing be the analog transmission format of RGB three looks.Though formulated unified VESA standard in the world, VGA signal and this standard of a lot of VGA signal output apparatus outputs still have a certain distance, therefore in practice the demonstration of VGA signal are proofreaied and correct to be absolutely necessary.
The VGA signal of existing mosaic display screen shows that bearing calibration mainly may further comprise the steps:
Step 1 is presented at VGA signal to be proofreaded respectively on each display unit of mosaic display screen;
Step 2; Arbitrary display unit of selecting mosaic display screen is as the benchmark display unit; On the VGA signal parameter basis that the VGA of this benchmark display unit signal processing chip is discerned; Parameter value to the VGA signal parameter carries out manual setting, on the benchmark display unit, obtains complete correct demonstration up to image, preserves the parameter value of this moment then;
Step 3 is reference with the benchmark display unit, and adjustment closes on the VGA signal parameter of another display unit of benchmark display unit, till observing this display unit images displayed and benchmark display unit images displayed is alignd;
Step 4 is adjusted the VGA signal parameter of remaining display unit according to the mode similar with step 3, up to having proofreaied and correct all display units.
Can know that by foregoing in the prior art, what the demonstration alignment between each display unit of mosaic display screen was adopted is the range estimation adjustment, because the existence of subjective factor, influence adjustment effect inevitably.In addition, under the more situation of the display unit quantity of mosaic display screen, to simple manual mode meeting labor time and efforts, the inefficiency of adopting of the check and correction adjustment of all display units.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of can advance convenient, method of correcting rapidly to the VGA signal of each display unit of being input to mosaic display screen.
The technical scheme that the present invention adopted is: the VGA signal of mosaic display screen shows bearing calibration, may further comprise the steps:
VGA signal to be proofreaded is presented at respectively on each display unit of mosaic display screen;
Arbitrary display unit of selecting mosaic display screen is as the benchmark display unit; The signal parameter value of the VGA signal of importing this benchmark display unit is carried out the manual work adjustment; On the benchmark display unit, obtain complete correct demonstration up to image, VGA signal parameter value at this moment is kept in the storer of this benchmark display unit as VGA signal parameter reference value;
Read the VGA signal parameter reference value in the storer that is stored in the benchmark display unit through main control equipment; And this VGA signal parameter reference value sent to the remaining display unit of this mosaic display screen, control remaining each display unit and automatically the VGA signal parameter is set at consistent with VGA signal parameter reference value.
Adopt technique scheme; Only need a display unit in the mosaic display screen is carried out the manual adjustment of VGA signal parameter; Can pass through to accomplish to the image demonstration of all the other display units in the mosaic display screen, thereby shorten correction time greatly, improve work efficiency from NMO correction.
Description of drawings
Fig. 1 is the schematic flow sheet that the VGA signal of mosaic display screen according to an embodiment of the invention shows bearing calibration.
Fig. 2 to Fig. 4 shows the trimming process synoptic diagram of the VGA signal demonstration bearing calibration of mosaic display screen according to an embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is made and to further specify.
As shown in Figure 1, the VGA signal of a kind of mosaic display screen of the present invention shows that bearing calibration may further comprise the steps:
Step S1 is presented at VGA signal to be proofreaded respectively on each display unit of mosaic display screen.
Step S2; Arbitrary display unit of selecting mosaic display screen is as the benchmark display unit; The signal parameter value of the VGA signal of importing this benchmark display unit is carried out the manual work adjustment; On the benchmark display unit, obtain complete correct demonstration up to image, VGA signal parameter value at this moment is kept in the storer of this benchmark display unit as VGA signal parameter reference value.
The information of the VGA signal that the software of the VGA signal processing chip of display unit can obtain to import identifies the field frequency of VGA signal, the effective VGA signal parameters such as display position and total line number of counting, go that show of effective line number, row that the field shows accurately.Operating personnel can utilize software that in the above-mentioned parameter at least one carried out manual adjustment, and for example, the adjustable full line of operating personnel effectively shows counts and row display position parameter, on the benchmark display unit, obtains complete correct demonstration up to observing image.
Step S3; Read the VGA signal parameter reference value in the storer that is stored in the benchmark display unit through main control equipment; And this VGA signal parameter reference value sent to the remaining display unit of this mosaic display screen, control remaining each display unit and automatically the VGA signal parameter is set at consistent with VGA signal parameter reference value.
Can communicate through UART (universal asynchronous receiver/transmitter) serial ports between above-mentioned main control equipment and each display unit, main control equipment for example is a computing machine.
Fig. 2 to Fig. 4 shows the trimming process synoptic diagram of the VGA signal demonstration bearing calibration of mosaic display screen according to an embodiment of the invention for example.
Fig. 2 shows a mosaic display screen of being made up of four display units 11,12,21,22; The VGA signal source that resolution is 1440 * 900, refreshing frequency is 60Hz is outputed to this four display units respectively, four display frames of main control equipment these four display unit independent displaying of control.Wherein, display unit 11 display images 1, display unit 12 display images 2, display unit 21 display images 3, display unit 22 display images 4.As can beappreciated from fig. 2, the image of four display units all exists and shows size and position deviation phenomenon, needs adjustment and correction.
Fig. 3 shows the implementation result of step S2.Send the manual synchronizing regulating command from main control equipment and give display unit 11 as the benchmark display unit; 11 this moments accurately discerned the VGA signal parameter through the software of VGA signal processing chip by display unit; Regulate the horizontal size and the position of the display frame of display unit 11 through operating personnel, till the screen size with whole display unit 11 conforms to.
Fig. 4 shows the implementation result of step S3.Main control equipment notice display unit 12,21,22 carries out from NMO correction; This moment, the software of display unit 12,21,22 startup VGA signal processing chips grasped the VGA signal parameter; And compare and adjust with the VGA signal parameter of display unit 11, till identical.The whole implementation process of this step S3 can realize through software automatically, proofreaies and correct the required time thereby shorten greatly, has saved human cost and time cost.
Claims (3)
1. the VGA signal of mosaic display screen shows bearing calibration, it is characterized in that, may further comprise the steps:
VGA signal to be proofreaded is presented at respectively on each display unit of mosaic display screen;
Arbitrary display unit of selecting mosaic display screen is as the benchmark display unit; The signal parameter value of the VGA signal of importing this benchmark display unit is carried out the manual work adjustment; On the benchmark display unit, obtain complete correct demonstration up to image, VGA signal parameter value at this moment is kept in the storer of this benchmark display unit as VGA signal parameter reference value;
Read the VGA signal parameter reference value in the storer that is stored in the benchmark display unit through main control equipment; And this VGA signal parameter reference value sent to the remaining display unit of this mosaic display screen, control remaining each display unit and automatically the VGA signal parameter is set at consistent with VGA signal parameter reference value.
2. the VGA signal of mosaic display screen as claimed in claim 1 shows bearing calibration, it is characterized in that each display unit of said main control equipment and mosaic display screen communicates through the UART serial ports.
3. the VGA signal of mosaic display screen as claimed in claim 2 shows bearing calibration, it is characterized in that said main control equipment is a computing machine.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100525260A CN102654993A (en) | 2011-03-04 | 2011-03-04 | VGA (Video Graphics Array) signal display correction method of spliced display screen |
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| CN2011100525260A CN102654993A (en) | 2011-03-04 | 2011-03-04 | VGA (Video Graphics Array) signal display correction method of spliced display screen |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106162006A (en) * | 2015-04-23 | 2016-11-23 | 北京东方久瑞系统工程技术有限公司 | A kind of video camera automatically adjusts the method for mosaic screen chroma-luminance |
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| EP1858256A2 (en) * | 2006-05-19 | 2007-11-21 | Funai Electric Co., Ltd. | Video display device |
| JP2007334071A (en) * | 2006-06-16 | 2007-12-27 | Sony Corp | Video signal processor and display device |
| CN101329841A (en) * | 2007-06-20 | 2008-12-24 | 上海仙视电子有限公司 | Splicing circuit module of LCD large-screen and control method thereof |
| CN101447144A (en) * | 2008-11-25 | 2009-06-03 | 应骏 | Seamless assembly large screen displayed with multi-unit image and assembly method thereof |
| CN201655203U (en) * | 2009-12-15 | 2010-11-24 | 安防制造（中国）有限公司 | Liquid crystal spliced curtain wall |
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2011
- 2011-03-04 CN CN2011100525260A patent/CN102654993A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1858256A2 (en) * | 2006-05-19 | 2007-11-21 | Funai Electric Co., Ltd. | Video display device |
| JP2007334071A (en) * | 2006-06-16 | 2007-12-27 | Sony Corp | Video signal processor and display device |
| CN101329841A (en) * | 2007-06-20 | 2008-12-24 | 上海仙视电子有限公司 | Splicing circuit module of LCD large-screen and control method thereof |
| CN101447144A (en) * | 2008-11-25 | 2009-06-03 | 应骏 | Seamless assembly large screen displayed with multi-unit image and assembly method thereof |
| CN201655203U (en) * | 2009-12-15 | 2010-11-24 | 安防制造（中国）有限公司 | Liquid crystal spliced curtain wall |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106162006A (en) * | 2015-04-23 | 2016-11-23 | 北京东方久瑞系统工程技术有限公司 | A kind of video camera automatically adjusts the method for mosaic screen chroma-luminance |
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Application publication date: 20120905 |