CN103618895A - Digital television test flow generation device and method - Google Patents
Digital television test flow generation device and method Download PDFInfo
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- CN103618895A CN103618895A CN201310654589.2A CN201310654589A CN103618895A CN 103618895 A CN103618895 A CN 103618895A CN 201310654589 A CN201310654589 A CN 201310654589A CN 103618895 A CN103618895 A CN 103618895A
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Abstract
The invention relates to a digital television test flow generation device and method. The method comprises a TS flow storage module, a signal selection module and a signal sending module, wherein the TS flow storage module is used for storing TS flows and transmitting the TS flows to the signal selection module; the signal selection module is used for sequentially selecting corresponding TS flows to serve as TS flows for testing from the TS flow storage module on the basis of TS flow categories, TS flow formats, TS flow items and TS flow names; the signal sending module is used for outputting the TS flows for testing selected by the signal selection module. The technical scheme of the digital television test flow generation method is in one-to-one correspondence to the device. According to the device and method, requirements for a hardware system are low, signal capacity is large, the development cycle is short, human intervention in a testing process is reduced, and testing scientificity and accuracy are improved.
Description
Technical field
The present invention relates to digital television techniques field, particularly relate to a kind of Digital Television test stream generating apparatus and method.
Background technology
For advancing China's terrestrial DTV standard (DTMB) applying at home and abroad, research test code streams generator, drives and advances building of test macro (platform) for DTMB with this, has become the project that digital TV field is more and more paid attention to.
In prior art, when Digital Television research and design, production, detection maintenance, the image information that the transmission Chinese of its test use carries is all rest image or iterative motion image substantially, and its acoustic information carrying also has a lot of selections, and signal processing is very complicated.Therefore, in generating the process of test code streams, because of reasons such as signal kinds complexity, need testing staff's artificial intervention, science and accuracy that impact detects, strengthened tester's labour intensity.In addition, loaded down with trivial details because of signal processing equally, in the generation of test code streams, hardware system is had to higher requirement, and the construction cycle is also very long.
For the problems referred to above, the present invention proposes a kind of new Digital Television test stream generating apparatus and method.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of Digital Television test stream generating apparatus and method, for the problem such as solve that test stream generative process is high to requirements for hardware, labour intensity is large and the construction cycle is long.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of Digital Television test stream generating apparatus, for the TS stream from storage, obtain the TS stream of Digital Television test use, comprise the TS stream memory module, signal selection module and the signal transmitting module that connect successively:
Described TS stream memory module, it flows for storing TS, and TS is streaming to signal selection module;
Described signal selection module, it is for selecting corresponding TS stream as the TS stream of test use based on TS traffic category, TS stream format, TS stream project and TS stream title from TS stream memory module successively;
Described signal transmitting module, it is selected for exporting the TS stream of the test use of selecting through described signal selection module.
On the basis of technique scheme, the present invention can also do following improvement.
Further, described TS stream memory module, signal selection module and signal transmitting module are integrated in same computer.
Further, described signal selection module comprises signal classification selection module, signal format selection module, signal project selection module and the signal name selection module connecting successively, and these four modules flow title based on TS traffic category, TS stream format, TS stream project and TS respectively TS stream is selected.
Further, described TS traffic category comprises system test signal, audio-frequency test signal and video test signals.
Further, described TS stream format comprises high-definition signal and SD signal, and after carrying out the selection of TS traffic category, described system test signal, audio-frequency test signal and video test signals are divided into high-definition signal and SD signal.
Further, carrying out on the basis of TS stream format selection, described system test signal is divided into radio demodulating and channel-decoding, demultiplexing, the decoding of transmission stream, video properties, digital audio decoding, acoustic characteristic, power adaptation, complete machine consumed power, functional requirement and electronic program guides by TS stream project; Described audio-frequency test signal is divided into MPEG1 layer, AC3 dual track and AC35.1 sound channel by TS stream project.
Further, described signal transmitting module comprises that sending parameter arranges module and TS sending card, and described transmission parameter arranges module for the relevant parameter of the TS stream of output test use is set, and described TS sending card is for exporting the TS stream of described test use.
Further, described signal transmitting module comprises that sending parameter arranges module and TS sending card, and described TS sending card is inserted on the PCI groove of mainboard of described computer, described transmission parameter arranges module for the relevant parameter of the TS stream of output test use is set, and described TS sending card is for exporting the TS stream of described test use.
Further, described transmission parameter arranges module and specifically comprises for the relevant parameter of the TS stream of output test use is set: the output speed that TS stream is set; Transport stream packets length is set; The interface of TS sending card is set, comprises that the output of ASI interface, SPI interface are exported and ASI/SPI interface is exported simultaneously; Sending mode is set, comprises ASI continuous mode and bag burst mode; Clock reference input is set to enable.
Based on above-mentioned Digital Television test stream generating apparatus, technical scheme of the present invention also comprises a kind of Digital Television test stream generating method, obtains the TS stream of Digital Television test use for the TS stream from storage, comprises the following steps:
Step 1, obtains the TS stream of storage;
Step 3, the TS stream of the test use that output is selected.
The invention has the beneficial effects as follows: the present invention is low to requirements for hardware, signal volume is large, and the construction cycle is short, has saved to a great extent testing cost.This scheme is simple, has reduced testing staff's artificial intervention in test process, reduced labour intensity, testing staff's human error is dropped to minimumly simultaneously, has improved science and the accuracy of test.
Accompanying drawing explanation
Fig. 1 is the structural representation of Digital Television test stream generating apparatus of the present invention;
Fig. 2 is the schematic flow sheet of Digital Television test stream generating method of the present invention;
Fig. 3 is that the signal of the embodiment of the present invention is selected schematic flow sheet.
In accompanying drawing, the list of parts of each label representative is as follows:
1, TS stream memory module, 2, signal selection module, 3, signal transmitting module, 21, signal classification is selected module, and 22, signal format selects module, 23, signal project selects module, 24, signal name is selected module, and 31, send parameter module is set, 32, TS sending card.
Embodiment
Below in conjunction with accompanying drawing, principle of the present invention and feature are described, example, only for explaining the present invention, is not intended to limit scope of the present invention.
As shown in Figure 1, the present embodiment provides a kind of Digital Television test stream generating apparatus, obtains the TS stream of Digital Television test use for the TS stream from storage, comprises the TS stream memory module 1, signal selection module 2 and the signal transmitting module 3 that connect successively:
Described TS stream memory module 1, it flows for storing TS, and TS is streaming to signal selection module 2;
Described signal selection module 2, it is for selecting corresponding TS stream as the TS stream of test use based on TS traffic category, TS stream format, TS stream project and TS stream title from TS stream memory module successively;
Described signal transmitting module 3, it is for exporting the TS stream of the test use of selecting through described signal selection module 2.
Accordingly, as shown in Figure 2, the present embodiment gives a kind of Digital Television test stream generating method, comprises the following steps:
Step 1, obtains the TS stream of storage;
Step 3, the TS stream of the test use that output is selected.
In the present embodiment, described Digital Television test stream generating method is corresponding one by one with the technical scheme of Digital Television test stream generating apparatus, and its operation principle and concrete implementation detail are identical.
In the present embodiment, described TS stream memory module 1, signal selection module 2 and signal transmitting module 3 are integrated in same computer.And, described signal selection module comprises signal classification selection module 21, signal format selection module 22, signal project selection module 23 and the signal name selection module 24 connecting successively, and these four modules flow title based on TS traffic category, TS stream format, TS stream project and TS respectively TS stream is selected.
Described TS traffic category comprises system test signal, audio-frequency test signal and video test signals; Described TS stream format comprises high-definition signal and SD signal, and after carrying out the selection of TS traffic category, described system test signal, audio-frequency test signal and video test signals are divided into high-definition signal and SD signal; Carrying out on the basis of TS stream format selection, described system test signal is divided into radio demodulating and channel-decoding, demultiplexing, the decoding of transmission stream, video properties, digital audio decoding, acoustic characteristic, power adaptation, complete machine consumed power, functional requirement and electronic program guides by TS stream project, and described audio-frequency test signal is divided into MPEG1 layer, AC3 dual track and AC35.1 sound channel by TS stream project.Finally, according to TS traffic category, TS stream format, TS stream project, carry out the name of TS stream, make TS stream title comprise the relevant information of TS traffic category, TS stream format and TS stream project.
In addition, described signal transmitting module 3 comprises that sending parameter arranges module 31 and TS sending card 32, and described transmission parameter arranges module for the relevant parameter of the TS stream of output test use is set, and described TS sending card is for exporting the TS stream of described test use.When described TS stream memory module 1, signal selection module 2 and signal transmitting module 3 are integrated in same computer, described TS sending card 32 is inserted on the PCI groove of mainboard of described computer.
Here, described transmission parameter arranges module and specifically comprises for the relevant parameter of the TS stream of output test use is set: the output speed that TS stream is set; Transport stream packets length is set; The interface of TS sending card is set, comprises that the output of ASI interface, SPI interface are exported and ASI/SPI interface is exported simultaneously; Sending mode is set, comprises ASI continuous mode and bag burst mode; Clock reference input is set to enable.
Known according to such scheme, during concrete enforcement, the hardware system of the Digital Television test stream generating apparatus of the present embodiment consists of keyboard, mouse, touch pad, display, TS sending card, power supply, hard disk and mainboard etc., by above-mentioned hardware composing, use windows operating system, TS sending card is inserted on the PCI groove of mainboard.Software systems mainly want settling signal to select and signal sends two-part content.
One, signal is selected
Fig. 3 is that signal is selected flow process, and the transport stream of test use and corresponding supporting paper, picture file are stored on hard disk, by signal attribute, carries out signal selection.According to TS traffic category, will have signal is divided three classes: system test signal, video test signals and audio-frequency test signal.On the basis of this three class, each class is divided into high-definition signal and SD signal by TS stream format again.On the basis of TS stream format, complete machine signal is divided into 10 of radio demodulating and channel-decoding, demultiplexing, the decoding of transmission stream, video properties, digital audio decoding, acoustic characteristic, power adaptation, complete machine consumed power, functional requirement, electronic program guidess by GB26686-2011 < < terrestrial DTV receiver general specification > >, and every has several corresponding signals below.Audio signal is divided into 3, MPEG1 layer 2, AC3 dual track, AC35.1 sound channel by its coded system, and every has several corresponding signals below.Video test signals is divided without project.After TS traffic category, TS stream format and TS stream project are selected, determine corresponding TS stream title, the signal that will test by signal name selection, category-form-project-title is carried out signal selection.Here, signal name can be by User Defined, and during define name, can be with due regard to by signal format and function etc.
Two, signal sends
Signal sends and specifically comprises again tetrameric embodiment.
First, initialization sending card.
Secondly, send parameter setting.Mainly comprise the output speed setting of the TS stream that will send; Transport stream packets length arranges, and is generally 188; The interface setting of sending card, has the output of ASI interface, the output of SPI interface, also has ASI and SPI interface to export three kinds of situations simultaneously; Sending mode arranges, and has two kinds of selections of ASI continuous mode and bag burst mode; Clock reference input enables to arrange; Clock output enable arranges.
Again, TS sending card sends data.The byte number (buffer_length) of the TS stream of every less important transmission is determined, is generally 188 and 204 multiple.From TS stream, read buffer_length byte at every turn, exist in buffering area, the ASI/SPI output interface that TS stream signal is provided by the TS stream sending card on pci card groove is exported, and becomes ASI data.
Finally, be sent, buffer release district, stops sending.
The present invention is low to requirements for hardware, and signal volume is large, and the construction cycle is short, has saved to a great extent testing cost, and has reduced testing staff's artificial intervention in test process, has improved science and the accuracy of test.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a Digital Television test stream generating apparatus, is characterized in that, obtains the TS stream of Digital Television test use for the TS stream from storage, comprises the TS stream memory module, signal selection module and the signal transmitting module that connect successively:
Described TS stream memory module, it flows for storing TS, and TS is streaming to signal selection module;
Described signal selection module, it is for selecting corresponding TS stream as the TS stream of test use based on TS traffic category, TS stream format, TS stream project and TS stream title from TS stream memory module successively;
Described signal transmitting module, it is for exporting the TS stream of the test use of selecting through described signal selection module.
2. according to the Digital Television test stream generating apparatus described in claim 1, it is characterized in that, described TS stream memory module, signal selection module and signal transmitting module are integrated in same computer.
3. Digital Television according to claim 1 and 2 is tested stream generating apparatus, it is characterized in that, described signal selection module comprises signal classification selection module, signal format selection module, signal project selection module and the signal name selection module connecting successively, and these four modules flow title based on TS traffic category, TS stream format, TS stream project and TS respectively TS stream is selected.
4. Digital Television test stream generating apparatus according to claim 1 and 2, is characterized in that, described TS traffic category comprises system test signal, audio-frequency test signal and video test signals.
5. Digital Television according to claim 4 is tested stream generating apparatus, it is characterized in that, described TS stream format comprises high-definition signal and SD signal, after carrying out the selection of TS traffic category, described system test signal, audio-frequency test signal and video test signals are divided into high-definition signal and SD signal.
6. Digital Television according to claim 5 is tested stream generating apparatus, it is characterized in that, carrying out on the basis of TS stream format selection, described system test signal is divided into radio demodulating and channel-decoding, demultiplexing, the decoding of transmission stream, video properties, digital audio decoding, acoustic characteristic, power adaptation, complete machine consumed power, functional requirement and electronic program guides by TS stream project; Described audio-frequency test signal is divided into MPEG1 layer, AC3 dual track and AC35.1 sound channel by TS stream project.
7. Digital Television according to claim 1 is tested stream generating apparatus, it is characterized in that, described signal transmitting module comprises that sending parameter arranges module and TS sending card, described transmission parameter arranges module for the relevant parameter of the TS stream of output test use is set, and described TS sending card is for exporting the TS stream of described test use.
8. Digital Television according to claim 2 is tested stream generating apparatus, it is characterized in that, described signal transmitting module comprises that sending parameter arranges module and TS sending card, and described TS sending card is inserted on the PCI groove of mainboard of described computer, described transmission parameter arranges module for the relevant parameter of the TS stream of output test use is set, and described TS sending card is for exporting the TS stream of described test use.
9. according to the Digital Television test stream generating apparatus described in claim 7 or 8, it is characterized in that, described transmission parameter arranges module and specifically comprises for the relevant parameter of the TS stream of output test use is set:
The output speed of TS stream is set;
Transport stream packets length is set;
The interface of TS sending card is set, comprises that the output of ASI interface, SPI interface are exported and ASI/SPI interface is exported simultaneously;
Sending mode is set, comprises ASI continuous mode and bag burst mode;
Clock reference input is set to enable.
10. a Digital Television test stream generating method, is characterized in that, obtains the TS stream of Digital Television test use for the TS stream from storage, comprises the following steps:
Step 1, obtains the TS stream of storage;
Step 2 selects corresponding TS stream as the TS stream of test use based on TS traffic category, TS stream format, TS stream project and TS stream title successively from the TS stream of storage;
Step 3, the TS stream of the test use that output is selected.
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| CN110944168A (en) * | 2019-11-28 | 2020-03-31 | 北京牡丹视源电子有限责任公司 | 8K test signal generation device and method, storage medium and equipment |
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