CN202889532U - Video testing system - Google Patents
Video testing system Download PDFInfo
- Publication number
- CN202889532U CN202889532U CN201220479462.2U CN201220479462U CN202889532U CN 202889532 U CN202889532 U CN 202889532U CN 201220479462 U CN201220479462 U CN 201220479462U CN 202889532 U CN202889532 U CN 202889532U
- Authority
- CN
- China
- Prior art keywords
- video
- decoding circuit
- test system
- buffer
- switching
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Abstract
The utility model discloses a video testing system comprising a plurality of video signal input ends used to receive a plurality of video signals, a video acquisition circuit, and an analyzing device connected with the video acquisition circuit. The video acquisition circuit comprises a video channel switching and decoding circuit comprising a plurality of input ends, which are respectively connected with the plurality of video signal input ends; a buffer, which is connected with the video channel switching and decoding circuit; a one-chip microcomputer, which is respectively connected with the buffer and the video channel switching and decoding circuit, and can be used to transmit the digital signals to the analyzing device. By adopting the disclosed technical scheme provided in the utility model, the fast automatic test of the video signals can be realized, the testing efficiency and accuracy can be improved, and the testing costs can be reduced.
Description
Technical field
The utility model relates to the signal testing technical field, specially refers to a kind of video test system.
Background technology
At present, on production line, carry out video measurement and normally video line is connected to television set, utilize human eye to remove to observe picture.But, adopt said method, can not realize automatic test, so that lower, the easy erroneous judgement of testing efficiency and testing cost are high.
The utility model content
Main purpose of the present utility model is for providing a kind of video test system, is intended to realize the rapid automatized test to vision signal, and can improve testing efficiency and accuracy rate, reduction testing cost.
The utility model provides a kind of video test system, described video test system comprises be used to a plurality of video signal input terminals that receive a plurality of vision signals, video capture circuit and the analytical equipment that is connected with described video capture circuit, wherein, described video capture circuit comprises:
Video channel is switched and decoding circuit, comprises a plurality of inputs, and a plurality of described inputs are connected with a plurality of described video signal input terminals respectively;
Buffer is connected with decoding circuit with described video channel switching;
Single-chip microcomputer be connected with decoding circuit with described buffer, the switching of described video channel respectively, and transmission of digital signals is to described analytical equipment.
Preferably, described video channel is switched and decoding circuit is exported 10 digital signal, described single-chip microcomputer comprises USB transceiver, smart serial interface engine and microprocessor, and the microprocessor in the described single-chip microcomputer is connected with decoding circuit with described buffer, the switching of described passage respectively; The form of the passage switching of described microprocessor control video channel switching and decoding circuit and the digital signal of output, also be used for simultaneously controlling the most-significant byte digital signal that described buffer receives only 10 position digital signals of described video channel switching and decoding circuit output, and from buffer, receive described most-significant byte digital signal; Described smart serial interface engine is converted to serial digital signal with the parallel digital signal that receives; Described USB transceiver arrives analytical equipment with described most-significant byte digital data transmission.
Preferably, described video test system also comprises a clock generator, and it is connected with single-chip microcomputer with described buffer respectively, and restriction buffer output most-significant byte digital signal is to the bandwidth of described single-chip microcomputer.
Preferably, between described video signal input terminal and the switching of described video channel and decoding circuit, also be connected with impedance matching module.
Preferably, described impedance matching module comprises a plurality of resistance that are connected between each described video signal input terminal and the ground.
Preferably, between described impedance matching module and the switching of described video channel and decoding circuit, also be connected with the DC-isolation module.
Preferably, described DC-isolation module comprises a plurality of coupling capacitances that are connected respectively between the input of each described video signal input terminal and each described video channel switching and decoding circuit.
Preferably, the model of described video channel switching and decoding circuit is TVP5160.
Preferably, the model of described single-chip microcomputer is CY7C68013A.
The utility model switches by the video channel of video capture circuit and decoding circuit is selected the output of one tunnel vision signal from the multi-channel video signal of external world's input, and with vision signal decoding and convert the digital signal of specific format to, then single-chip microcomputer receives above-mentioned digital signal by buffer, and be uploaded to analytical equipment so that vision signal is tested, realized the rapid automatized test to vision signal, improve testing efficiency and accuracy rate, and reduced testing cost.
Description of drawings
Fig. 1 is the structural representation of the utility model video test system the first embodiment;
Fig. 2 is the structural representation of the utility model video test system the second embodiment;
Fig. 3 is the structural representation of the utility model video test system the 3rd embodiment;
Fig. 4 is the structural representation of the utility model video test system the 4th embodiment.
The realization of the utility model purpose, functional characteristics and advantage are described further with reference to accompanying drawing in connection with embodiment.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
With reference to Fig. 1, Fig. 1 is the structural representation of the utility model video test system the first embodiment.The video test system that present embodiment provides comprises a plurality of video signal input terminals for the multi-channel video signal that receives extraneous input, video capture circuit 10 and is connected, is used for the analytical equipment 20 analyzed through the vision signal after video capture circuit 10 collections with video capture circuit 10.Wherein, video capture circuit 10 comprises video channel switching and decoding circuit 101, buffer 102 and single-chip microcomputer 103.
In the present embodiment, video channel is switched and decoding circuit 101 comprises a plurality of inputs, a plurality of inputs are connected with a plurality of video signal input terminals respectively, be used for selecting the output of one tunnel vision signal from the multi-channel video signal of external world's input, the different vision signal of each selection, test in order to multi-channel video signal is exported to back-end component successively, and with vision signal decoding and convert specific form to, export 10 position digital signals.Above-mentioned specific form can be ITU-R BT.656(Embedded Synchronous) or ITU-R BT601(4:2:2 separate type synchronous) form; And in the present embodiment, video channel is switched and the model of decoding circuit 101 can be TVP5160.
The input of buffer 102, output port switch to be connected with decoding circuit to be connected with single-chip microcomputer with video channel respectively and are connected.Single-chip microcomputer 103 also is connected with decoding circuit by the switching of I2C universal serial bus and video channel and is connected.Single-chip microcomputer 103 is used for controlling the form of the digital signal that video channel is switched and the passage of decoding circuit 101 switches (namely selecting which vision signal) and export, also be used for simultaneously the most-significant byte digital signal that control buffer 102 receives only 10 position digital signals, receive the most-significant byte digital signal from buffer, and be transferred to analytical equipment.After analytical equipment 20 receives this digital signal, it is carried out the processing such as computing and reduction, then the indexs such as video amplitude, frequency and signal to noise ratio of the corresponding vision signal of this digital signal are judged, thereby realization is to the automatic test of vision signal.
Compared to prior art, video test system of the present utility model, switch and decoding circuit 101 selection one tunnel vision signal output from the multi-channel video signal of external world's input by the video channel of video capture circuit 10, and with vision signal decoding and convert specific form to, export 10 position digital signals, then single-chip microcomputer 103 receives and buffer memory most-significant byte digital signal by buffer 102, and the most-significant byte digital signal is uploaded to analytical equipment so that vision signal is tested, realized the rapid automatized test to vision signal, improve testing efficiency and accuracy rate, and reduced testing cost.
With reference to Fig. 2, Fig. 2 is the structural representation of the utility model video test system the second embodiment.Compared to the video test system of the utility model the first embodiment, the video test system of present embodiment further comprises a clock generator 104; Simultaneously, in the present embodiment, single-chip microcomputer 103 comprises USB transceiver (not shown), smart serial interface engine (not shown) and microprocessor (not shown), and the model of this single-chip microcomputer 103 can be CY7C68013A.
The microprocessor of single-chip microcomputer 103 switches to be connected with decoding circuit with described buffer 102, described passage respectively and is connected, the form of the digital signal that is used for the passage switching of the switching of control video channel and decoding circuit 101 and exports, also be used for simultaneously the most-significant byte digital signal that control buffer 102 receives only 10 position digital signals, and receive its received most-significant byte digital signal from buffer.The parallel digital signal that the smart serial interface engine is used for receiving is converted to serial digital signal, the USB transceiver is used for the most-significant byte digital data transmission to analytical equipment 20, after analytical equipment 20 receives this digital signal, it is carried out the processing such as computing and reduction, then the indexs such as video amplitude, frequency and signal to noise ratio of the corresponding vision signal of this digital signal are judged, thereby realization is to the automatic test of vision signal.
With reference to Fig. 3, Fig. 3 is the structural representation of the utility model video test system the 3rd embodiment.Based on the utility model video test system the second embodiment, the video test system that the utility model the 3rd embodiment provides, comprise that further one is connected to the impedance matching module 105 between a plurality of video signal input terminals and video channel switching and the decoding circuit 101, this impedance matching module 105 is used for preventing that the voltage of the vision signal inputted from a plurality of video signal input terminals is floating high, unstable.In the present embodiment, impedance matching module 105 comprises a plurality of resistance that are connected between each video signal input terminal and the ground.
With reference to Fig. 4, Fig. 4 is the structural representation of the utility model video test system the 4th embodiment.On the basis of the 3rd embodiment, the video test system that the utility model the 4th embodiment provides, comprise that further one is connected to the DC-isolation module 106 between impedance matching module 105 and video channel switching and the decoding circuit 101, owing to might also comprise the direct current composition in the vision signal of input, for preventing the treatment circuit of direct current composition interfere with subsequent, remove the direct current composition that wherein comprises by DC-isolation module 106.In the present embodiment, this DC-isolation module 106 comprises a plurality of coupling capacitances, is connected respectively between each input of each video signal input terminal and road switching and decoding circuit 101.
The above only is preferred embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure transformation that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (9)
1. video test system, it is characterized in that, described video test system comprises that wherein, described video capture circuit comprises be used to a plurality of video signal input terminals that receive a plurality of vision signals, video capture circuit and the analytical equipment that is connected with described video capture circuit:
Video channel is switched and decoding circuit, comprises a plurality of inputs, and a plurality of described inputs are connected with a plurality of described video signal input terminals respectively;
Buffer is connected with decoding circuit with described video channel switching;
Single-chip microcomputer be connected with decoding circuit with described buffer, the switching of described video channel respectively, and transmission of digital signals is to described analytical equipment.
2. video test system as claimed in claim 1, it is characterized in that, described video channel is switched and decoding circuit is exported 10 digital signal, described single-chip microcomputer comprises USB transceiver, smart serial interface engine and microprocessor, and the microprocessor in the described single-chip microcomputer is connected with decoding circuit with described buffer, the switching of described passage respectively; The form of the passage switching of described microprocessor control video channel switching and decoding circuit and the digital signal of output, also be used for simultaneously controlling the most-significant byte digital signal that described buffer receives only 10 position digital signals of described video channel switching and decoding circuit output, and from buffer, receive described most-significant byte digital signal; Described smart serial interface engine is converted to serial digital signal with the parallel digital signal that receives; Described USB transceiver arrives analytical equipment with described most-significant byte digital data transmission.
3. video test system as claimed in claim 2 is characterized in that, described video test system also comprises a clock generator, and it is connected with single-chip microcomputer with described buffer respectively, and restriction buffer output most-significant byte digital signal is to the bandwidth of described single-chip microcomputer.
4. video test system as claimed in claim 3 is characterized in that, between described video signal input terminal and the switching of described video channel and decoding circuit, also is connected with impedance matching module.
5. video test system as claimed in claim 4 is characterized in that, described impedance matching module comprises a plurality of resistance that are connected between each described video signal input terminal and the ground.
6. video test system as claimed in claim 4 is characterized in that, between described impedance matching module and the switching of described video channel and decoding circuit, also is connected with the DC-isolation module.
7. video test system as claimed in claim 6 is characterized in that, described DC-isolation module comprises a plurality of coupling capacitances that are connected respectively between the input of each described video signal input terminal and each described video channel switching and decoding circuit.
8. such as each described video test system in the claim 1 to 7, it is characterized in that described video channel is switched and the model of decoding circuit is TVP5160.
9. video test system as claimed in claim 8 is characterized in that, the model of described single-chip microcomputer is CY7C68013A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220479462.2U CN202889532U (en) | 2012-09-18 | 2012-09-18 | Video testing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220479462.2U CN202889532U (en) | 2012-09-18 | 2012-09-18 | Video testing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202889532U true CN202889532U (en) | 2013-04-17 |
Family
ID=48080915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220479462.2U Expired - Lifetime CN202889532U (en) | 2012-09-18 | 2012-09-18 | Video testing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202889532U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104320655A (en) * | 2014-11-11 | 2015-01-28 | 杭州士兰微电子股份有限公司 | Video decoding chip testing device and method |
| CN108347569A (en) * | 2018-03-08 | 2018-07-31 | 青岛北洋天青数联智能股份有限公司 | Multi-channel high-speed serial digital video signal switching equipment, switching method and system |
-
2012
- 2012-09-18 CN CN201220479462.2U patent/CN202889532U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104320655A (en) * | 2014-11-11 | 2015-01-28 | 杭州士兰微电子股份有限公司 | Video decoding chip testing device and method |
| CN108347569A (en) * | 2018-03-08 | 2018-07-31 | 青岛北洋天青数联智能股份有限公司 | Multi-channel high-speed serial digital video signal switching equipment, switching method and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103595862B (en) | A kind of test macro of MIPI DSI controller | |
| CN203054052U (en) | Multi-channel program-control switch used for data acquisition unit calibration | |
| CN103076530A (en) | Automatic open short circuit test system for CMOS (Complementary Metal-Oxide-Semiconductor Transistor) chip and test method | |
| CN202889532U (en) | Video testing system | |
| CN104034995A (en) | LVDS signal open-circuit and short-circuit detection device and open-circuit and short-circuit detection method | |
| CN201514472U (en) | ATmega128-based dual-bus magnetoresistive sensor | |
| CN105516717A (en) | Television information source wireless switching method and system for complete television automatic test | |
| CN102608944A (en) | Expansion device for semaphore acquisition port and expansion system | |
| CN201571142U (en) | Signal switching circuit and television set test circuit | |
| CN117198228A (en) | Display screen backlight adjusting method, device, equipment and storage medium | |
| CN217868129U (en) | Wireless intelligent sensor chip architecture based on system-in-package | |
| CN105607542A (en) | Output interface equipment | |
| CN203151503U (en) | Optical fiber based USB3.0 transmission device and optical fiber based USB3.0 camera | |
| CN102045585B (en) | Digital video encoder function testing method | |
| CN111782455B (en) | Portable device for testing screen end product | |
| CN104022933A (en) | Vehicle bus debugging system based on multi-mode signal conversion | |
| CN105208321B (en) | A kind of apparatus for processing of video signals and processing method and DVR equipment | |
| CN203772988U (en) | Transient electric energy quality information acquisition module with high sampling rate | |
| CN202720481U (en) | High speed data processor | |
| CN203178465U (en) | Electronic transformer output calibration device | |
| CN207074218U (en) | A kind of terminal connections case of high pressure trap integration test experiment | |
| CN201047857Y (en) | Universal meter capable of automatically identifying different type extended modules | |
| CN205281609U (en) | Vehicle recording system that traveles based on dual processor | |
| CN202757689U (en) | Infrared detection apparatus | |
| CN204576136U (en) | A kind of parallel data high speed acquisition device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130417 |
|
| CX01 | Expiry of patent term |