CN101453664B - Video signal test system and method - Google Patents
Video signal test system and method Download PDFInfo
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- CN101453664B CN101453664B CN2007102028247A CN200710202824A CN101453664B CN 101453664 B CN101453664 B CN 101453664B CN 2007102028247 A CN2007102028247 A CN 2007102028247A CN 200710202824 A CN200710202824 A CN 200710202824A CN 101453664 B CN101453664 B CN 101453664B
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Abstract
The invention provides a method for testing a video signal. The method comprises the following steps: working parameters of a video signal generating board (hereafter referred to 'board'), testing equipment and a control type computer are set, and testing items of the board are set through the testing equipment; the board generates the video signal according to the set working parameters; the control type computer controls the video signal to enter a disk drive system mode of the board for signal processing, and the video signal is outputted to the testing equipment via a television output interface of the board; the testing equipment analyzes the video signal according to the testing items so as to obtain a test result of each testing item, and the test result of each testing item is fed back to the control type computer; and the control type computer generates a test report. Furthermore, the invention also provides a video signal testing system. With the method, whether the quality of the signal accords with the requirement of a client in the field or not can be reflected more realistically.
Description
Technical field
The present invention relates to a kind of video signal test system and method, relate in particular to a kind of can be via the video signal test system and the method for TV output interface.
Background technology
Along with the fast development of computer technology, the kind of computer interface equipment is also more and more, and becomes increasingly complex.Wherein, in multimedia field, field of personal computers and graphics process field, TV output interface (TV-out interface) has become indispensable assembly, for example, possess the graphic display card of output signal to TV in the PC, promptly this graphic display card possesses the TV-out interface.Graphic display card of the present invention all has the TV-out interface.And also just emerge in an endless stream via the method for testing of the vision signal of TV-out interface output thereupon.
Traditional test is based on via the graphic display card output signal that Windows XP operating system, Mac operating system or linux system carry out.With the test computer is example, and its testing hardware framework as shown in Figure 1.This hardware structure comprises the content of two parts: tested computer 1 and testing equipment 2.Wherein, graphic display card 10 in the tested computer 1 connects a TV-out interface 12, this TV-out interface 12 is by S-terminal (SeparateVideo, S-Video) line 3 separates the carrier chrominance signal C of graphic display card 10 outputs with brightness signal Y, again respectively with different channel transfer to testing equipment 2, this testing equipment comprises at least two passages, and TV-out interface 12 shown in Figure 1 is with the carrier chrominance signal C of graphic display card 10 output and the passage A20 and the channel B 20 that are sent to testing equipment 2 after brightness signal Y is separated.Testing equipment 2 receives described carrier chrominance signal C and brightness signal Y, the vision signal that is used for testing tested computer 1.Testing equipment 2 also comprises a display screen 24, is used to show test value, and the tester is by checking this test value, with the quality of the vision signal of understanding tested computer 1 output, and then judges the quality of this tested computer 1.
Conventional test methodologies is based on Windows XP, Mac operating system or the linux system in the tested computer 1, and to can testing via the vision signal of TV-out interface output, the signal flow of its test is to as shown in Figures 2 and 3.
Consult Fig. 2, being based on Windows XP or Mac operating system testing can be via the signal flow graph of the vision signal of TV-out interface output.At first, vision signal inputs to the DOS pattern, via the hardware information of mainboard physical layer detecting master plate, enter Windows XP operating system then or Mac operating system is handled, the processed video signal is finally from display output that this tested computer connected.Vision signal processed flow process under this operating system is also long, for example: drive processing such as formula via environment subsystem, subsystem dynamic link libraries, incoming/outgoing management device, graphical interfaces, graphics device.
Consult Fig. 3, being based on linux system test can be via the signal flow graph of the vision signal of TV-out interface output, its signal flow to the signal flow based on Windows XP, Mac operating system testing shown in Figure 2 to similar, vision signal at first need enter the mainboard physical layer and the motherboard hardware of DOS pattern, then via library, formula translation operation storehouse and graphic processor storehouse, the display output signal the most finally of linux system.
Because in the vision signal transport process, need through Fig. 2 or described DOS pattern of Fig. 3 and operating system, the hardware and the subsystem of its processed long flow path, need process are more, signal can progressively be decayed, make distorted signals, finally cause test result to be lower than or to exceed the standard of industry specification, and test result can not directly be saved.In addition, the coverage rate of conventional test methodologies is very narrow.
Summary of the invention
In view of above content, be necessary to provide a kind of video signal test system, its test result is true, can directly be saved, and the broad covered area of this method of testing.
In view of above content, be necessary to provide a kind of test video signal method, its test result is true, can directly be saved, and the broad covered area of this method of testing.
A kind of video signal test system comprises video signal generating board, testing equipment and connects the S-terminal line of this video signal generating board and testing equipment.Described video signal generating board comprises a TV output interface.This system also comprises a control type computer, this control type computer has the dual serial PORT COM, and link to each other with testing equipment with described video signal generating board respectively by the data wire that assigns into this dual serial PORT COM, wherein, one section test program of described control type calculator memory storage, this test program is used to be provided with the running parameter of described video signal generating board, testing equipment and control type computer, and the test event of this video signal generating board is set to this testing equipment by described data wire.Described video signal generating board is used for producing vision signal according to above-mentioned running parameter, described this vision signal of control type computer control enters under the disk drive system pattern of this video signal generating board carries out signal processing, and with the processed video signal earlier via described TV output interface, export described testing equipment to via the S-terminal line then.Described testing equipment is used to receive above-mentioned processed video signal, analyze this vision signal according to the set test event of test program, draw the test result of each test event, and the test result of this each test event is fed back to described control type computer.Described control type computer also is used for generating test report according to described test result.
A kind of test video signal method comprises that step is as follows: the running parameter of described video signal generating board, testing equipment and control type computer is set, and the test event of described video signal generating board is set to this testing equipment by described data wire; This video signal generating board generates vision signal according to set running parameter; The described vision signal of described control type computer control enters under the disk drive system pattern of this video signal generating board carries out signal processing, and with the processed video signal earlier via described TV output interface, export described testing equipment to via the S-terminal line then; This testing equipment is analyzed described vision signal according to above-mentioned test event, draws the test result of each test event, and the test result of this each test event is fed back to described control type computer; And this control type computer is according to the test result generation test report of each test event.
Compared to prior art, described video signal test system and method, only be used in the vision signal of testing under the DOS pattern via the TV-out interface, making test result more truly reach is easily directly preserved, and the broad covered area of this method of testing can be used for testing the vision signal performance that has this TV-out interface equipment.
Description of drawings
Fig. 1 is the hardware structure figure of traditional test vision signal.
Fig. 2 is based on Windows XP or Mac operating system testing can be via the signal flow graph of the vision signal of TV-out interface output.
Fig. 3 is based on linux system test can be via the signal flow graph of the vision signal of TV-out interface output.
Fig. 4 is the hardware structure figure of video signal test system preferred embodiment of the present invention.
Fig. 5 is the signal flow graph of video signal test system of the present invention.
Fig. 6 is the operation process chart of test video signal method of the present invention preferred embodiment.
Embodiment
As shown in Figure 4, be the hardware structure figure of video signal test system preferred embodiment of the present invention.This system comprises video signal generating board 1, testing equipment 2, control type computer 4 and connects the S-terminal line of this video signal generating board 1 and testing equipment 2 (SeparateVideo, S-Video line) 3.One section test program of described control type computer 4 stored, this test program is used to be provided with the running parameter of video signal generating board 1, testing equipment 2 and control type computer 4, and the test event of video signal generating board 1 is set by testing equipment 2.Described running parameter comprises the ripple bit rate.Particularly, test program is arranged to identical ripple bit-rates values with the ripple bit rate of above-mentioned video signal generating board 1, testing equipment 2 and control type computer 4.Described test event comprises at least: by the vision signal that test video signal generator platform 1 is exported, this video signal generating board 1 is carried out color bar test, multiburst test, noise test etc.
Described video signal generating board 1 comprises a plurality of first assemblies and chip (not shown), TV output interface (TV-out interface) 12 and at least one COM port (COM) 14.Video signal generating board 1 produces vision signal according to control type computer 4 set running parameters, and enter disk drive system (disk operating system, DOS) under the pattern this vision signal is handled, as shown in Figure 5, at first, vision signal inputs to the DOS pattern (step S50) of video signal generating board 1, enter the physical layer (step S52) of video signal generating board 1, the hardware information (step S54) of detecting video signal generating board 1, flow into then (step S56) in the dos operating system environment, finally export TV-out interface 12 (step S58) to, send described vision signal to testing equipment 2 through S-Video line 3.
Wherein, the vision signal that transmits via S-Video line 3 is separated into two kinds of signal: carrier chrominance signal C and brightness signal Y, this carrier chrominance signal C and brightness signal Y respectively with different channel transfer to testing equipment 2, promptly this testing equipment 2 comprises at least two passages: passage A20 and channel B 22, and in order to receive described carrier chrominance signal C and brightness signal Y respectively.
Present embodiment is that the testing equipment 2 of " VM700T " is an example with model, and this testing equipment 2 also comprises a display screen 24 and the COM26 that is connected with control type computer 4.This testing equipment 2 is used to receive described carrier chrominance signal C and brightness signal Y, is decoded into Cb signal and Cr signal, according to each test event analytic signal, and draws the test result of each test event thus.Display screen 24 can be used for showing described test result.Testing equipment 2 feeds back to control type computer 4 with described test result.The test program of this control type computer 4 generates test report according to described test result, and this test report is stored in the file.
As shown in Figure 6, be the operation process chart of test video signal method of the present invention preferred embodiment.
At first, the tester need connect video signal generating board 1, testing equipment 2 and control type computer 4, particularly, the tester connects the TV-out interface 12 of video signal generating board 1 and the passage A20 and the channel B 22 of testing equipment 2 with S-Video line 3, connect the COM26 of testing equipment 2 and the COM42 of control type computer 4 with data wire, and connect the COM14 of another COM40 of this control type computer 4 to video signal generating board 1 with another data wire, set up video signal generating board 1, connection (step S600) between testing equipment 2 and the control type computer 4.
Described test program is provided with the running parameter of video signal generating board 1, testing equipment 2 and control type computer 4, and the test event of video signal generating board 1 is set by testing equipment 2, described running parameter comprises the ripple bit rate, and test program is arranged to identical ripple bit-rates values (step S602) with the ripple bit rate of this video signal generating board 1, testing equipment 2 and control type computer 4.Described test event comprises color bar test, multiburst test and noise test at least.
Described video signal generating board 1 generates vision signal according to set running parameter, and control type computer 4 is controlled by above-mentioned test program and carried out vision signal under the DOS pattern that this vision signal enters video signal generating board 1 and handle (step S604).
This video signal generating board 1 transmits described processed video signal by TV-out interface 12 and S-Video line 3, wherein, the vision signal that transmits via S-Video line 3 is separated into carrier chrominance signal C and brightness signal Y, and this carrier chrominance signal C and brightness signal Y transfer to testing equipment 2 (step S606) from passage A20 and channel B 22 respectively.
This testing equipment 2 sends described test result to control type computer 4, and the test program in this control type computer 4 generates test report according to described test result, and this test report is stored in (step S610) in the file.
The tester can learn by checking the test report in this document whether the quality of described video signal generating board is qualified.
In addition, the present invention can be widely used in the board or the chip of all kinds of support S-Video lines, and the vision signal in this board or the chip is tested.Those skilled in the art also can do other variation in spirit of the present invention, as long as it does not depart from technique effect of the present invention, all should be included within the present invention's scope required for protection.
Claims (8)
1. video signal test system, this system comprises video signal generating board, testing equipment and connects the S-terminal line of this video signal generating board and testing equipment, described video signal generating board comprises a TV output interface, it is characterized in that, this system also comprises a control type computer, this control type computer has the dual serial PORT COM, and link to each other with testing equipment with described video signal generating board respectively by the data wire that assigns into this dual serial PORT COM, wherein:
One section test program of described control type calculator memory storage, this test program is used to be provided with the running parameter of described video signal generating board, testing equipment and control type computer, and the test event of this video signal generating board is set to this testing equipment by described data wire;
Described video signal generating board, be used for producing vision signal according to above-mentioned running parameter, described this vision signal of control type computer control enters under the disk drive system pattern of this video signal generating board carries out signal processing, and with the processed video signal earlier via described TV output interface, export described testing equipment to via the S-terminal line then;
Described testing equipment, be used to receive above-mentioned processed video signal, analyze this vision signal according to the set test event of test program, draw the test result of each test event, and the test result of this each test event is fed back to described control type computer; And
Described control type computer also is used for generating test report according to described test result.
2. video signal test system as claimed in claim 1 is characterized in that, the described running parameter that is provided with comprises the ripple bit rate of described video signal generating board, testing equipment and control type computer is arranged to identical ripple bit-rates values.
3. video signal test system as claimed in claim 1 is characterized in that, described test event comprises color bar test, multiburst test and noise test.
4. video signal test system as claimed in claim 1, it is characterized in that, described testing equipment comprises at least two passages, vision signal via the S-terminal line is separated into carrier chrominance signal and luminance signal, this carrier chrominance signal and luminance signal respectively by described channel transfer to described testing equipment.
5. video signal test system as claimed in claim 1 is characterized in that, described testing equipment also comprises a display screen, is used to show described test result.
6. the test video signal method based on the described system of claim 1 is characterized in that this method comprises the steps:
The running parameter of described video signal generating board, testing equipment and control type computer is set, and the test event of described video signal generating board is set to this testing equipment by described data wire;
This video signal generating board generates vision signal according to set running parameter;
The described vision signal of described control type computer control enters under the disk drive system pattern of this video signal generating board carries out signal processing, and with the processed video signal earlier via described TV output interface, export described testing equipment to via the S-terminal line then;
This testing equipment is analyzed described vision signal according to above-mentioned test event, draws the test result of each test event, and the test result of this each test event is fed back to described control type computer; And
This control type computer generates test report according to the test result of each test event.
7. test video signal method as claimed in claim 6 is characterized in that, the described running parameter that is provided with comprises the ripple bit rate of described video signal generating board, testing equipment and control type computer is arranged to identical ripple bit-rates values.
8. test video signal method as claimed in claim 6 is characterized in that, described test event comprises color bar test, multiburst test and noise test.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007102028247A CN101453664B (en) | 2007-12-03 | 2007-12-03 | Video signal test system and method |
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| CN2007102028247A CN101453664B (en) | 2007-12-03 | 2007-12-03 | Video signal test system and method |
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| CN101453664A CN101453664A (en) | 2009-06-10 |
| CN101453664B true CN101453664B (en) | 2011-07-27 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI432753B (en) | 2009-07-31 | 2014-04-01 | Quanta Comp Inc | Test system and test method thereof |
| CN101996613B (en) * | 2009-08-20 | 2013-07-31 | 纬创资通股份有限公司 | Output testing method, system and platform of electronic device |
| CN102006496B (en) * | 2009-08-28 | 2014-02-19 | 鸿富锦精密工业（深圳）有限公司 | Data processing equipment and method for implementing video signal measurement |
| CN102004682B (en) * | 2009-09-02 | 2013-01-23 | 广达电脑股份有限公司 | Test system and test method thereof |
| CN101902660B (en) * | 2010-08-13 | 2013-01-23 | 深圳创维－Rgb电子有限公司 | Method for testing video output signals of television |
| CN102685543B (en) * | 2011-03-09 | 2016-01-20 | 神讯电脑(昆山)有限公司 | Video signal test system and method |
| CN103037239A (en) * | 2011-10-09 | 2013-04-10 | 三星电子（中国）研发中心 | System and method for testing receiving performance of digital video receiving terminal |
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