CN101799503B - Method for uniformly testing DDC, HDCP and full screen picture on display - Google Patents
Method for uniformly testing DDC, HDCP and full screen picture on display Download PDFInfo
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- CN101799503B CN101799503B CN2010101397369A CN201010139736A CN101799503B CN 101799503 B CN101799503 B CN 101799503B CN 2010101397369 A CN2010101397369 A CN 2010101397369A CN 201010139736 A CN201010139736 A CN 201010139736A CN 101799503 B CN101799503 B CN 101799503B
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Abstract
The invention relates to a method for uniformly testing DDC, HDCP and a full screen picture on a display. The method comprises a step of connecting a display to be tested and a video signal generator and is characterized by comprising the following steps: outputting a square picture to the displayed to be tested by using the video signal generator and displaying the square picture on the display to be tested; reading DDC and HDCP data from the display to be tested in an IIC communication mode by using the video signal generator to perform detection; and displaying a detection result on the square picture of the display to be tested. Test contents of the DDC, the HDCP and the full screen picture are simultaneously displayed in the same test picture, so test speed is increased, test labor force is reduced and high use value is achieved under the condition of keeping test items.
Description
Technical field
The present invention relates to a kind of display DDC, HDCP, picture unified method of testing all over the screen.
Background technology
The detection of the display to be measured in the display pipeline production run at present can be divided into: DDC test, HDCP test, picture check all over the screen; Wherein DDC is the bus standard that display and host computer communicate, and its full name is: DISPLAY DATA CHANNEL.Its basic function is exactly the electronic record data information of display, such as receiving capable field frequency scope, production firm, date of manufacture, product ID, product type, typical display mode and parameter thereof, the DDC standard category of being supported, version information of EDID or the like.DDC test is exactly whether detect above relevant information correct.
The English full name of HDCP: High-bandwidth Digital Content Protection, Chinese is exactly HDCP, and it is the decoding technique of the HDCP of Intel's exploitation.Be equipped with the HDCP decoding technique, can have accepted the high-definition signal of full format.The HDCP test is exactly whether the display that detects us has disposed correct HDCP decoding technique.
Picture check all over the screen: be exactly to produce a grid picture with signal generator, input display, whether check display picture displayed in the center, sees simultaneously whether the grid lines have ghost image etc. bad.
As shown in Figure 1, in display pipeline production testing process, to be divided into above-mentioned three test station and accomplish, the input of test manpower and testing tool is more, and artificially participate in more, easy error.
Summary of the invention
Deficiency in view of above-mentioned technology; The purpose of this invention is to provide a kind of display DDC, HDCP, picture unified method of testing all over the screen; This method shows DDC, HDCP, picture these three test contents all over the screen simultaneously in same test pictures; Under the condition that does not reduce test event, promoted test speed, reduced the test manpower.
The present invention is achieved in that a kind of display DDC, HDCP, picture unified method of testing all over the screen; Comprise display to be measured is connected with flying-spot video generator; It is characterized in that: grid picture of said flying-spot video generator output shows to display to be measured, and simultaneously, said flying-spot video generator utilizes the IIC communication mode from display to be measured, to read DDC and HDCP data; Detect, the result that will detect at last is presented on the grid picture of display to be measured; The mode that said flying-spot video generator reads the DDC data comprises: send reading order and in display, read DDC EDID content; And be translated into production firm, date of manufacture, product ID, the product type information that operator can be understood; And come out in the grid screen displayed; And output affirmation result, correctly show the OK prompt, incorrect demonstration NG prompt; The mode that said flying-spot video generator reads the HDCP data comprises: said flying-spot video generator sends to display and reads the HDCP instruction; Read 20 groups of Key and KSV among 40 groups of HDCP Key at random; Judge whether the KEY and the KSV that read be correct; And below the grid picture, demonstrate BKSV, the AKSV information that operator can be understood, if correctly show the OK prompt, if incorrect demonstration NG prompt.
The present invention detects station with three in the process in the display pipeline production testing in the past and is integrated into a test station; Through in same test pictures, showing DDC, HDCP, picture these three test contents all over the screen simultaneously; Shortened testing process; Improve production efficiency, had marketable value preferably.
Description of drawings
Fig. 1 be habit the testing process synoptic diagram.
Fig. 2 is a testing process synoptic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing and examples of implementation the present invention is further specified.
As shown in Figure 1; The present invention provides a kind of display DDC, HDCP, picture unified method of testing all over the screen, comprises display to be measured is connected with flying-spot video generator, it is characterized in that: grid picture of said flying-spot video generator output shows to display to be measured; Simultaneously; Said flying-spot video generator utilizes the IIC communication mode from display to be measured, to read DDC and HDCP data, detects, and the result that will detect at last is presented on the grid picture of display to be measured.
The mode that said flying-spot video generator reads the DDC data comprises: send the Read order and in display, read DDC EDID content; And be translated into production firm, date of manufacture, product ID, the product type information that operator can be understood; And come out in the grid screen displayed; And output confirms that the result correctly shows the OK prompt, incorrect demonstration NG prompt.
The mode that said flying-spot video generator reads the HDCP data comprises: said flying-spot video generator sends Read HDCP instruction to Monitor; Read 20 groups of Key and KSV among 40 groups of HDCP Key at random; Judge whether the KEY and the KSV that read be correct; And below the grid picture, demonstrate BKSV, the AKSV information that operator can be understood, if correctly show the OK prompt, if incorrect demonstration NG prompt.It is that 5Bytes is total up to 285Bytes that HDCP Key is made up of every group of 8Bytes of 40 groups of key and KSV, and the composition form of KSV is that to convert scale-of-two into be 20 1 and 20 0 composition to 5Bytes.Converting scale-of-two into such as KSV (F8 6F 10 D6 A2) is: 1111100001101111000100001101011010100010.
The above is merely preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (1)
1. a display DDC, HDCP, picture unified method of testing all over the screen; Comprise display to be measured is connected with flying-spot video generator; It is characterized in that: grid picture of said flying-spot video generator output shows to display to be measured, and simultaneously, said flying-spot video generator utilizes the IIC communication mode from display to be measured, to read DDC and HDCP data; Detect, the result that will detect at last is presented on the grid picture of display to be measured; The mode that said flying-spot video generator reads the DDC data comprises: send reading order and in display, read DDC EDID content; And be translated into production firm, date of manufacture, product ID, the product type information that operator can be understood; And come out in the grid screen displayed; And output affirmation result, correctly show the OK prompt, incorrect demonstration NG prompt; The mode that said flying-spot video generator reads the HDCP data comprises: said flying-spot video generator sends to display and reads the HDCP instruction; Read 20 groups of Key and KSV among 40 groups of HDCP Key at random; Judge whether the KEY and the KSV that read be correct; And below the grid picture, demonstrate BKSV, the AKSV information that operator can be understood, if correctly show the OK prompt, if incorrect demonstration NG prompt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101397369A CN101799503B (en) | 2010-04-06 | 2010-04-06 | Method for uniformly testing DDC, HDCP and full screen picture on display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010101397369A CN101799503B (en) | 2010-04-06 | 2010-04-06 | Method for uniformly testing DDC, HDCP and full screen picture on display |
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| Publication Number | Publication Date |
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| CN101799503A CN101799503A (en) | 2010-08-11 |
| CN101799503B true CN101799503B (en) | 2012-02-15 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290019B (en) * | 2011-08-31 | 2013-09-25 | 捷星显示科技（福建）有限公司 | Two-in-one detection method of picture quality and power of LCD (liquid crystal display) |
| CN107454392A (en) * | 2017-09-22 | 2017-12-08 | 上海帆声图像科技有限公司 | Direct-detecting mode television set HDCP encryption detection methods |
| CN107454394A (en) * | 2017-09-22 | 2017-12-08 | 上海帆声图像科技有限公司 | Television set HDCP encryption detection methods based on software verification |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3979300B2 (en) * | 2003-02-10 | 2007-09-19 | 住友電気工業株式会社 | Interface module for digital video signal transmission |
| JP2005051558A (en) * | 2003-07-29 | 2005-02-24 | Matsushita Electric Ind Co Ltd | Transmission device, reception device, and transmission/reception system |
| KR20050099305A (en) * | 2004-04-09 | 2005-10-13 | 삼성전자주식회사 | Display system and control method thereof |
| CN1763705A (en) * | 2004-10-19 | 2006-04-26 | 南京Lg同创彩色显示系统有限责任公司 | EDID data format switching device for image display |
| WO2009099606A2 (en) * | 2008-02-06 | 2009-08-13 | Omron Network Products, Llc | System for combining high-definition video control signals for transmission over an optical fiber |
| CN101577078B (en) * | 2009-06-22 | 2011-04-27 | 福建捷联电子有限公司 | Full automatic adjustment and test system for liquid crystal display |
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Address after: 350300 Rongqiao economic and Technological Development Zone, Fuqing City, Fuzhou City, Fujian Province Patentee after: TPV Electronic Technology (Fujian) Co., Ltd Address before: 350301 Fujian JIELIAN Electronics Co., Ltd Patentee before: Fujian Jielian Electronic Co Ltd |
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