CN109274958A - A kind of STB audio frequency and video multichannel automatic switchover testing cassete - Google Patents
A kind of STB audio frequency and video multichannel automatic switchover testing cassete Download PDFInfo
- Publication number
- CN109274958A CN109274958A CN201810913714.XA CN201810913714A CN109274958A CN 109274958 A CN109274958 A CN 109274958A CN 201810913714 A CN201810913714 A CN 201810913714A CN 109274958 A CN109274958 A CN 109274958A
- Authority
- CN
- China
- Prior art keywords
- audio frequency
- microprocessor
- testing cassete
- electronic switch
- rca
- 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.)
- Withdrawn
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
- H04N17/004—Diagnosis, testing or measuring for television systems or their details for digital television systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Abstract
The invention discloses a kind of STB audio frequency and video multichannels to automatically switch testing cassete, including RCA input module, simulant electronic switch CD4052, microprocessor, binary channels D/A converting circuit MS4344, signal processor MS8416, USB communication interface and HDMI2.0 switching circuit, the RCA input module is connected with simulant electronic switch CD4052, and simulant electronic switch CD4052 is also respectively connected with RCA output module, binary channels D/A converting circuit MS4344 and microprocessor.STB audio frequency and video multichannel of the present invention automatically switches testing cassete and switches on the Related products to one group of test equipment such as four set-top boxes simultaneously, realize that a set of tester table tests the Related products such as four set-top boxes, the dynamometry of client can be reduced to 70%, testing cost reduces by 60%.
Description
Technical field
The present invention relates to a kind of test device, specifically a kind of STB audio frequency and video multichannel automatically switches testing cassete.
Background technique
Test device for set-top box product and high definition output Related product in the market can only be set at present with a set of test
It is standby to be tested to correspond to a set of product.
Prior art test method is as follows: industrial computer passes through 4K capture card for the 4K video and audio signal of 4K set-top box
To computer, the signal output it is compared with the standard signal of computer, if signal quality is consistent, determines to survey for acquisition
Try PASS, discriminating test FAIL on the contrary.
Summary of the invention
The purpose of the present invention is to provide a kind of STB audio frequency and video multichannels to automatically switch testing cassete, to solve above-mentioned back
The problem of being proposed in scape technology.
To achieve the above object, the invention provides the following technical scheme:
A kind of STB audio frequency and video multichannel automatic switchover testing cassete, including RCA input module, simulant electronic switch
CD4052, microprocessor, binary channels D/A converting circuit MS4344, signal processor MS8416, USB communication interface and
HDMI2.0 switching circuit, the RCA input module are connected with simulant electronic switch CD4052, simulant electronic switch CD4052
It is also respectively connected with RCA output module, binary channels D/A converting circuit MS4344 and microprocessor, signal processor MS8416's is defeated
Enter end connection digital audio interface, the output end of signal processor MS8416 connects microprocessor, and microprocessor is also respectively connected with
HDMI2.0 switching circuit and USB communication interface, HDMI2.0 switching circuit are also respectively connected with HDMI input module and HDMI output
Module.
As further technical solution of the present invention: the model STM32F407 of the microprocessor.
As further technical solution of the present invention: the RCA input module includes four input ports.
As further technical solution of the present invention: there are four the digital audio interfaces.
As further technical solution of the present invention: there are four the HDMI input modules.
Compared with prior art, the beneficial effects of the present invention are: STB audio frequency and video multichannel of the present invention automatically switches test
Box switches on the Related products to one group of test equipment such as four set-top boxes simultaneously, realizes that a set of tester table tests four set-top boxes
The dynamometry of client can be reduced 70% by equal Related products, and testing cost reduces by 60%.
Detailed description of the invention
Fig. 1 is general structure schematic diagram of the present invention.
Basic schematic diagram Fig. 2 of the invention.
Fig. 3 is the circuit diagram of microprocessor.
Fig. 4 is the circuit diagram for the chip CH340 that USB turns serial ports.
Fig. 5 is the circuit diagram of simulant electronic switch CD4052.
Fig. 6 is the circuit diagram of EL817 optocoupler circuit.
Fig. 7 is the circuit diagram of signal processor MS8416.
Fig. 8 is electronic switch switching and the output circuit schematic diagram that SPDIF signal turns the switching of AV signal.
Fig. 9 is the circuit diagram that HDMI high definition four cuts a chip circuit.
Figure 10 is the circuit diagram of 4 HDMI connectors.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig. 1-10, embodiment 1, a kind of STB audio frequency and video multichannel automatic switchover testing cassete, including RCA input
Module, simulant electronic switch CD4052, microprocessor, binary channels D/A converting circuit MS4344, signal processor MS8416,
USB communication interface and HDMI2.0 switching circuit, the RCA input module are connected with simulant electronic switch CD4052, simulation electricity
Sub switch CD4052 is also respectively connected with RCA output module, binary channels D/A converting circuit MS4344 and microprocessor, signal processing
The input terminal of device MS8416 connects digital audio interface, and the output end of signal processor MS8416 connects microprocessor, micro process
Device is also respectively connected with HDMI2.0 switching circuit and USB communication interface, and HDMI2.0 switching circuit is also respectively connected with HDMI input mould
Block and HDMI output module.
Industrial computer software controls audiovideo switcher for the audio of 4K set-top box #1~#4 automatically by control serial ports
(SPDIF) and the standard signal of signal and computer that outputs it in turn of vision signal (AV) and high-definition video signal (HDMI)
It is compared, if signal quality is consistent, discriminating test PASS, anyway discriminating test FAIL, compared to operation mode before
60% cost and 70% operation manpower can be reduced.
Embodiment 2: on the basis of embodiment 1, microprocessor uses Samsung STM32F407 main control chip (such as Fig. 3) base
In ARM7 kernel, I2C function control EP9461E, MS8416 are mainly used, with I O function control CD4052 and LED etc., uses USB port
As control port and data transmission mouth, this circuit is connected to industry control electromechanics by the chip CH340 (such as Fig. 4) that USB turns serial ports
The USB port of brain is communicated in industry control generator terminal by software realization industrial personal computer and Samsung main control chip, and main control chip, which receives, to be come from
The control instruction of industrial computer simultaneously reaches control switching channel purpose by the control of circuit signal.
The implementation method of AV signal switching principle is by this two 8 channel number words control simulation electricity of CD4052 (U1, U2)
It is defeated that 4 road AV analog output signals are switched to AV analog signals all the way by ARM output control circuit pin by sub switch (such as Fig. 5)
Out on industrial personal computer capture card AV acquisition channel, while the signal of output is protected using EL817 optocoupler circuit (such as Fig. 6)
Shield, imitative stop when external voltage signal inputs damage ARM main control chip.
It is the control signal by MS8416 (U42) in microprocessor that SPDIF signal, which turns the implementation method that AV signal switches,
Under the action of, it realizes and being wherein connected all the way for four road SPDIF digital input signals is exported, (such as Fig. 7) is digital by 4 road SPDIF
Signal cuts through ARM output control circuit pin and switches to SPDIF digital signal all the way, using MS4344 (U43) binary channels number
Analog conversion circuit is converted into AV analog signal, switches using 8 channel number word of CD4052 (U44) control simulant electronic switch and defeated
Out on (such as Fig. 8) to the channel industrial personal computer capture card AV.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (5)
1. a kind of STB audio frequency and video multichannel automatically switches testing cassete, including RCA input module, simulant electronic switch CD4052,
Microprocessor, binary channels D/A converting circuit MS4344, signal processor MS8416, USB communication interface and HDMI2.0 switching electricity
Road, which is characterized in that the RCA input module is connected with simulant electronic switch CD4052, and simulant electronic switch CD4052 is also
It is separately connected RCA output module, binary channels D/A converting circuit MS4344 and microprocessor, the input of signal processor MS8416
End connection digital audio interface, the output end of signal processor MS8416 connect microprocessor, and microprocessor is also respectively connected with
HDMI2.0 switching circuit and USB communication interface, HDMI2.0 switching circuit are also respectively connected with HDMI input module and HDMI output
Module.
2. a kind of STB audio frequency and video multichannel according to claim 1 automatically switches testing cassete, which is characterized in that described
The model STM32F407 of microprocessor.
3. a kind of STB audio frequency and video multichannel according to claim 1 automatically switches testing cassete, which is characterized in that described
RCA input module includes four input ports.
4. a kind of STB audio frequency and video multichannel according to claim 1 automatically switches testing cassete, which is characterized in that described
There are four digital audio interfaces.
5. a kind of STB audio frequency and video multichannel according to claim 1 to 4 automatically switches testing cassete, feature exists
In there are four the HDMI input modules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810913714.XA CN109274958A (en) | 2018-08-13 | 2018-08-13 | A kind of STB audio frequency and video multichannel automatic switchover testing cassete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810913714.XA CN109274958A (en) | 2018-08-13 | 2018-08-13 | A kind of STB audio frequency and video multichannel automatic switchover testing cassete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109274958A true CN109274958A (en) | 2019-01-25 |
Family
ID=65153660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810913714.XA Withdrawn CN109274958A (en) | 2018-08-13 | 2018-08-13 | A kind of STB audio frequency and video multichannel automatic switchover testing cassete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109274958A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111131816A (en) * | 2020-02-18 | 2020-05-08 | 深圳市金锐显数码科技有限公司 | Television board card digital audio signal detection device |
| CN112822622A (en) * | 2020-12-28 | 2021-05-18 | 深圳市东微智能科技股份有限公司 | Multi-channel test system and method |
-
2018
- 2018-08-13 CN CN201810913714.XA patent/CN109274958A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111131816A (en) * | 2020-02-18 | 2020-05-08 | 深圳市金锐显数码科技有限公司 | Television board card digital audio signal detection device |
| CN112822622A (en) * | 2020-12-28 | 2021-05-18 | 深圳市东微智能科技股份有限公司 | Multi-channel test system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190125 |