CN101727373A - Display card testing device and method - Google Patents
Display card testing device and method Download PDFInfo
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- CN101727373A CN101727373A CN200810169423A CN200810169423A CN101727373A CN 101727373 A CN101727373 A CN 101727373A CN 200810169423 A CN200810169423 A CN 200810169423A CN 200810169423 A CN200810169423 A CN 200810169423A CN 101727373 A CN101727373 A CN 101727373A
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Abstract
The invention provides a display card testing device and a display card testing method. The display card testing device is coupled with a mainboard; the mainboard comprises a plurality of transmission ports, and is provided with a display card; and the display card generates first image data according to a preset formula. The display card testing device comprises a transmission module, a storage module, a data generation module and a comparison module, wherein the transmission module is coupled with the transmission ports; the storage module is coupled with the transmission module and receives the first image data generated by the display card; the data generation module is coupled with the storage module and generates second image data according to a preset formula, and the second image data is stored in the storage module; and the comparison module is coupled with the storage module and is used for comparing the first image data with the second image data. The comparison module is adopted to automatically compare the image data generated by the display card and the testing device, and is more accurate than human eyes.
Description
Technical field
The present invention relates to a kind of proving installation, and be particularly related to a kind of proving installation that is used to test display card.
Background technology
Display card need be tested to ensure the quality of products at its each interface connector before dispatching from the factory.Present method of testing is the display that the video output interface connector of each type on the motherboard is connected to correspondence.The video output interface connector type has video image matrix (VGA), digital video (DVI) and TV (TV) interface connector usually, the data type difference of the video output interface connector of these types output need be received on the different display device of display with corresponding connector type and shows.As shown in Figure 1, during test, display card plugged be connected on the motherboard, and video output interface connectors dissimilar on the motherboard is received corresponding display respectively, for example: promptly the VGA interface connector connects CRT monitor; Dvi connector connects LCD display; The TV interface connector connects TV.After the motherboard energising, motherboard operation test procedure (as 3DMark), operator need be observed three picture qualities on the display and judge whether the Video Out of display card is normal.
There is following problem in this way:
1. human eye has very strong individual subjectivity, and then influences test accuracy as the main judgement instrument of test.
2. when testing, in order to test various types of image connectors, must connect the display of the image connector with various corresponding types, when causing test, it is many to take up room, the cost height.
Summary of the invention
The invention provides a kind of display card proving installation and method of testing thereof, to address the above problem.
Display card proving installation provided by the invention, it couples motherboard, and motherboard comprises a plurality of transmission interfaces.Motherboard is provided with display card, and display card produces first view data according to default formula.The display card proving installation comprises transport module, memory module, data generating module and comparison module.Transport module couples transmit port.Memory module couples transport module and reception comes from first view data that display card produces.Data generating module couples memory module, and produces second view data according to default formula, and second image data storage is in memory module.Comparison module couples memory module, and in order to compare first view data and second view data.
The present invention provides a kind of method of testing of display card in addition, in order to test the performance of a display card.This method may further comprise the steps: receive one first view data that this display card is produced according to a default formula; According to producing one second view data by default formula; Relatively this first view data and this second view data.
Beneficial effect of the present invention is that than prior art, the present invention has adopted comparison module to compare the view data that display card and proving installation produce automatically, and is more more accurate than human eye.
For above and other objects of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. are described in detail below.
Description of drawings
Figure 1 shows that display card proving installation commonly used.
Figure 2 shows that the functional-block diagram of the display card proving installation of a preferred embodiment of the present invention.
Figure 3 shows that the motherboard of a preferred embodiment of the present invention and the local function block scheme of display card proving installation.
Figure 4 shows that the display card test flow chart of present embodiment.
Embodiment
Figure 2 shows that the functional-block diagram of the display card proving installation 200 of a preferred embodiment of the present invention.
Please refer to Fig. 2, the display card 300 that present embodiment is tested is to be plugged on the motherboard 400 when tested.Motherboard 400 comprises a plurality of transmit port 401a～401d, and certainly, motherboard 400 also comprises operation test procedure devices needed (as shown in Figure 3) such as central processing unit (CPU), internal memory, hard disk.Hard disk is used for storing test program, and internal memory is used for moving test procedure, and CPU is used for instruction is inputed to display card 300.
Display card proving installation 200 comprises transport module 201, memory module 202, data generating module 203 and comparison module 204, and wherein transmit port comprises a plurality of image out connector 401a～401c and a data transmission connector 401d.In the present embodiment, image out connector 401a～401c is respectively VGA, DVI, three kinds of display card connector types of TV, transport module 201 comprises VGA, DVI, three kinds of display card connectors of TV and a USB connector, above-mentioned VGA, DVI, TV connector are in order to transmit image data, and USB connector is in order to transmission control command (notice) or transmission data.
For example: first image data storage that motherboard 400 is produced display card 300 according to a default formula by image out connector 401a～401c is to memory module 202.Motherboard 400 is by other data outside the data transmission connector 401d transmission view data.Why the present invention does not limit default formula, if above-mentioned display card 300 can according to default formula produce view data just can, and this view data can be transmitted by dissimilar image connectors and gets final product.
As shown in Figure 2, the transport module 201 of display card proving installation 200 couples with transmit port 401a～401d by plurality of transmission lines 205.
Above-mentioned memory module 202 couples each transmit port, data generating module 203 and the comparison module 204 of transport module 201 respectively.
Data transmission connector 401d also is connected to transport module 201, is used for transmitting other data outside the view data of motherboard 400.Data transmission connector 401d for example is a USB connector.The data generating module 203 of above-mentioned display card proving installation 200 is coupled to memory module 202, similarly, produce second view data according to default formula same as described above, and second view data is stored to also in the memory module 202.In addition, in the present embodiment, motherboard 400 comprises three kinds of image out connector 401a, 401b, 401c, the data transmission connector 401d of motherboard 400 transmits test and notifies to display card proving installation 200, and when display card proving installation 200 received the test notice, data generating module 203 promptly began to produce second view data.
Whether comparison module 204 is identical with second view data in order to first view data that compares in the memory module 202, and a comparative result is provided and is sent to motherboard 400.
Below default formula is described in detail, Figure 3 shows that the motherboard of a preferred embodiment of the present invention and the local function block scheme of display card proving installation.
Motherboard 400 comprises CPU 402, chipset 403, hard disk 404 and display card 300 at least.
Hard disk 404 internal memories contain a test procedure.During test, CPU 402 calls the test procedure in the hard disk 404, and the order of a graphics process is sent to display card 300.
The data of being sent here by CPU 402 can enter the graphic chips 301 of display card 300 and handle.After graphic chips 301 was handled, related data can be sent to display card internal memory (VGA RAM) 302 and temporarily store.Then, Digital Image Data can be admitted to and store digital analog converter at random (Random AccessMemory Digital Analog Converter RAMDAC) 303 converts the simulated data that counter show to need to.Last RAMDAC delivers to the simulated data (or numerical data) that converts display and becomes the image of being seen again.
In the present embodiment, graphic chips 301 is followed default formula and is produced first view data, and this first view data is with following formula pixel (n)=f (x, y, R, G B) represents, pixel (n) expression is positioned at pixels in different positions point on the display, x, y represent the coordinate figure of this pixel, R, G, B represent the numerical value of the red, green, blue of this pixel respectively.X, y, R, G, the numerical value of B can preferably be described the coordinate position and the gray scale of a pixel.
As shown in Figure 3, display card proving installation 200 also comprises a storer 207, is used for storing relevant test procedure.Storer 207 is a system programmable register (In-SystemProgrammable Configuration PROMs) preferably, the test procedure that is stored in this system programmable register can be write according to need voluntarily, as long as the test procedure of being stored with the hard disk 404 in the motherboard 400 is identical.
After motherboard 400 is sent test and is notified to display card proving installation 200 by data transmission connector, data generating module 203 call in the storer 207 test procedure and according to calculating second view data with the identical default formula of display chip.
Figure 4 shows that the display card test flow chart of present embodiment.
Please also refer to Fig. 2 and Fig. 4.In the present embodiment, be under the situation of 1600*1200 for example at screen resolution, the picture of a screen need calculate 1.92 * 10
6Individual pixel.Suppose that display card 300 calculates coordinate figure and the R of a pixel pixel (n), G, B value in a time interval (for example being 10ns).Execution in step S502 and step S506, display card proving installation 200 receives the first view data pixel (n), and is stored in the memory module 202.
When beginning to test, motherboard 400 sends a test and notifies to the display card proving installation, as step S504.After the display card proving installation receives the test notice, data generating module 203 is promptly called the test procedure same with tested display card 300, according to the second view data pixel in producing at the same time at interval with the same default formula of tested display card 300 (n '), and be stored in the memory module 202, as step S508 and S510.
Then, execution in step S512, the first view data pixel (n) in more at interval and the second view data pixel (n ') be consistent.When relatively whether the first view data pixel (n) and the second view data pixel (n ') be consistent, be the two coordinate figure and R of comparison, G, the B value as long as there is a numerical value inequality, judges that promptly pixel (n) and pixel (n ') are inconsistent.
Then execution in step S514 and S516, (n ') is consistent if pixel (n) and pixel, and then the first count value N adds 1, and inconsistent as if pixel (n) and pixel (n '), then the second count value M adds 1.
In the output data of display card 300, if the signal end of transmission of a screen then can be exported a screen synch signal.Display card proving installation 200 detects whether receive the screen synch signal, judges whether that test finishes, as step S518.
If test does not finish, then get back to step S502 and S504, first view data and second view data that continue to produce in the next time interval to display card 300 compare.
If test finishes, the value that then transmits M and N is to motherboard 400, as step S520.By above narration as can be known, the value of N/ (M+N) has been represented in the screen that display card 300 to be measured produced the ratio of correct pixel in all pixels.
Obtain the value of M and N when motherboard 400 after, calculate the correct ratio of pixel according to N/ (M+N) after, obtain the test result of display card 300 tests by still not passing through.
In the present embodiment, the correct ratio of pixel for example is set is higher than at 99.5% o'clock, display card 300 test results are for passing through.The correct ratio of pixel is lower than at 99.5% o'clock, and test is not passed through.
Can connect a display device on the motherboard 400 shows test results.
Preferred embodiment of the present invention provides a kind of display card proving installation, is connected to the data output end of display card to be tested 300, adopts the default mechanism generation data identical with display card 300, and compares in real time whether the two identical.Than prior art, the present invention has saved the display of a plurality of different connectors, has reduced testing expense.
Though the present invention with preferred embodiment openly as above; yet it is not in order to limit the present invention; any those of ordinary skills; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking the scope that claims define.
Claims (12)
1. a display card proving installation couples motherboard, and above-mentioned motherboard is provided with display card, and above-mentioned display card produces first view data according to default formula, and above-mentioned motherboard comprises a plurality of transmit pories, it is characterized in that, above-mentioned display card proving installation comprises:
Transport module couples above-mentioned these transmit pories;
Memory module couples above-mentioned transport module, and receives above-mentioned first view data that comes from above-mentioned display card generation;
Data generating module couples above-mentioned memory module, and produces second view data according to above-mentioned default formula, and above-mentioned second image data storage is in above-mentioned memory module; And
Comparison module couples above-mentioned memory module, and more above-mentioned first view data and above-mentioned second view data.
2. display card proving installation according to claim 1, it is characterized in that, above-mentioned these transmit pories comprise a plurality of image out connectors and data transmission connector, above-mentioned transport module couples above-mentioned these image out connectors and above-mentioned data transmission connector respectively, above-mentioned motherboard transmits the test notice to above-mentioned data generating module by above-mentioned data transmission connector, makes above-mentioned data generating module produce above-mentioned second view data.
3. display card proving installation according to claim 1, it is characterized in that, also in order to produce comparative result, above-mentioned comparison module transmits extremely above-mentioned motherboard of above-mentioned comparative result by one of them of above-mentioned these transmit pories with above-mentioned transport module to above-mentioned comparison module.
4. display card proving installation according to claim 1 is characterized in that, above-mentioned memory module, above-mentioned data generating module and above-mentioned comparison module are incorporated in the same chip.
5. display card proving installation according to claim 1, it is characterized in that, above-mentioned transport module, above-mentioned memory module, above-mentioned data generating module and above-mentioned comparison module are arranged in the circuit board, and foregoing circuit plate and above-mentioned motherboard are coupled by plurality of transmission lines.
6. display card proving installation according to claim 1 is characterized in that, above-mentioned first view data and above-mentioned second view data are represented with the numerical value of its coordinate figure and red, green, blue respectively.
7. the method for testing of a display card, the performance in order to the test display card is characterized in that above-mentioned method of testing may further comprise the steps:
Receive first view data that above-mentioned display card is produced according to default formula;
Produce second view data according to above-mentioned default formula; And
More above-mentioned first view data and above-mentioned second view data.
8. method of testing according to claim 7 is characterized in that, above-mentioned method of testing also comprises stores above-mentioned first view data and above-mentioned second view data respectively.
9. method of testing according to claim 7 is characterized in that, more above-mentioned first view data and above-mentioned this step of second view data be comparison the two coordinate figure and red, blue, green numerical value.
10. method of testing according to claim 7 is characterized in that, above-mentioned method of testing comprises that also transmitting the test notice produces above-mentioned second view data.
11. method of testing according to claim 7 is characterized in that, above-mentioned method of testing also comprises the generation comparative result, and transmits the motherboard of above-mentioned comparative result to above-mentioned display card place.
12. method of testing according to claim 11 is characterized in that, produces this step of above-mentioned comparative result and comprises:
When above-mentioned first view data is consistent with above-mentioned second view data, first count value adds 1, and inconsistent when above-mentioned first view data and above-mentioned second view data, second count value adds 1; And
When test finishes, transmit above-mentioned first count value and above-mentioned second count value to above-mentioned motherboard.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810169423A CN101727373A (en) | 2008-10-16 | 2008-10-16 | Display card testing device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810169423A CN101727373A (en) | 2008-10-16 | 2008-10-16 | Display card testing device and method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103927242A (en) * | 2013-01-10 | 2014-07-16 | 鸿富锦精密工业(武汉)有限公司 | Display card testing system and display card testing method |
| CN103941112A (en) * | 2013-01-18 | 2014-07-23 | 技嘉科技股份有限公司 | System and method for detecting multiple image signals |
| CN106681868A (en) * | 2015-11-10 | 2017-05-17 | 技嘉科技股份有限公司 | Image data testing method and system |
| CN111176925A (en) * | 2019-12-24 | 2020-05-19 | 北京安兔兔科技有限公司 | Equipment performance testing method and device and electronic equipment |
| CN111507393A (en) * | 2020-04-14 | 2020-08-07 | 艾瑞思检测技术(苏州)有限公司 | Display card interface machine testing method based on Laplace feature mapping learning |
-
2008
- 2008-10-16 CN CN200810169423A patent/CN101727373A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103927242A (en) * | 2013-01-10 | 2014-07-16 | 鸿富锦精密工业(武汉)有限公司 | Display card testing system and display card testing method |
| CN103941112A (en) * | 2013-01-18 | 2014-07-23 | 技嘉科技股份有限公司 | System and method for detecting multiple image signals |
| CN106681868A (en) * | 2015-11-10 | 2017-05-17 | 技嘉科技股份有限公司 | Image data testing method and system |
| CN111176925A (en) * | 2019-12-24 | 2020-05-19 | 北京安兔兔科技有限公司 | Equipment performance testing method and device and electronic equipment |
| CN111176925B (en) * | 2019-12-24 | 2024-04-09 | 北京安兔兔科技有限公司 | Equipment performance test method and device and electronic equipment |
| CN111507393A (en) * | 2020-04-14 | 2020-08-07 | 艾瑞思检测技术(苏州)有限公司 | Display card interface machine testing method based on Laplace feature mapping learning |
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Open date: 20100609 |