CN101511039A - Method and system for testing sensitivity of digital television acceptance terminal - Google Patents
Method and system for testing sensitivity of digital television acceptance terminal Download PDFInfo
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- CN101511039A CN101511039A CNA2009101056338A CN200910105633A CN101511039A CN 101511039 A CN101511039 A CN 101511039A CN A2009101056338 A CNA2009101056338 A CN A2009101056338A CN 200910105633 A CN200910105633 A CN 200910105633A CN 101511039 A CN101511039 A CN 101511039A
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Abstract
The invention provides a method for testing sensitivity of a digital television receiving terminal and a system thereof which is suitable for the image transmitting field. The method includes steps as follows: connecting a computer with a digital television testing transmitter and a digital television receiving terminal, transmitting a testing dictate carrying a testing parameter to the digital television testing transmitter by the computer, the digital television testing transmitter automatic adjusting the signal intension of a RF signal to the digital television receiving terminal according with the testing parameter, the computer automatic recording present signal intension when mistake code rate feedback by the digital television receiving terminal reaching to the mistake code base, accordingly, the testing person needs not adjust various parameter of the testing instrument by hand. The testing person is more convenient for testing sensitivity by using the method and the system provided by the invention which increases testing efficiency.
Description
Technical field
The invention belongs to field of image transmission, relate in particular to a kind of sensitivity test method and system of receiving terminal for digital television.
Background technology
Along with the popularization of Digital Television, receiving terminal for digital television has entered huge numbers of families.Sensitivity has become the important indicator of weighing receiving terminal for digital television.The sensitivity of receiving terminal for digital television frequency locking is meant: receiving terminal for digital television is after pinning specific radiofrequency signal, when the error rate reaches international, national standard, or when being lower than the world, national standard (error rate is low more good more), the signal strength signal intensity of the radiofrequency signal of input.The error rate refers in the process of received signal, the ratio of resulting error message and the information totally received.
At present, before receiving terminal for digital television dispatched from the factory, production firm need carry out sensitivity test to it.Employed tester is the Digital Television test receiver, and for example SFU BROADCAST TESTSYSTEM is current comparatively popular a tester.During test, the tester links to each other tester with receiving terminal for digital television, the control device that carries by tester, manually be modulated to certain fixedly frequency, and manual adjustment is with the corresponding modulation system of this frequency, symbol rate, frequency bandwidth, have or not and mix, make tester export corresponding radiofrequency signal into parameters such as noises.In the process of test, need constantly change signal strength signal intensity, and the benchmark (for example, international, national standard) of the error rate of checking simultaneously whether the error rate reaches (can be less than or equal to), when reaching, then write down current signal intensity.Because in the process of test, the tester needs the various parameters of manual adjustment tester constantly, thereby makes test operation comparatively complicated, and testing efficiency is low.
Summary of the invention
The object of the present invention is to provide a kind of sensitivity test method of receiving terminal for digital television, be intended to solve in the test process of existing method of testing, the tester needs the various parameters of manual adjustment tester constantly, and test operation is comparatively complicated, the problem that testing efficiency is low.
The present invention is achieved in that a kind of sensitivity test method of receiving terminal for digital television, said method comprising the steps of:
A, the required test parameter of configuration sensitivity test;
B, transmission are carried the test instruction of described test parameter to the Digital Television test receiver;
C, Digital Television test receiver are adjusted the signal strength signal intensity of the radiofrequency signal of exporting to receiving terminal for digital television according to described test parameter;
The error rate of D, receiving digital television receiving terminal feedback;
E, judge whether the described error rate reaches the benchmark of the error rate, if do not reach the benchmark of the error rate, then return execution in step C, if reach the benchmark of the error rate, execution in step F;
F, note current signal intensity.
Another object of the present invention is to provide a kind of sensitivity test system of receiving terminal for digital television, described system comprises:
The test parameter dispensing unit is used to dispose the required test parameter of sensitivity test;
The test instruction transmitting element, be used to send carry described test parameter test instruction to the Digital Television test receiver so that the Digital Television test receiver is according to described test parameter, adjust the signal strength signal intensity of the radiofrequency signal of exporting to receiving terminal for digital television;
Error rate receiving element is used for the error rate that the receiving digital television receiving terminal feeds back;
Error rate judging unit is used to judge whether the described error rate reaches the benchmark of the error rate; And
The signal strength signal intensity record cell is used for noting current signal intensity when reaching the benchmark of the error rate.
In the present invention, by with computer and Digital Television test receiver, receiving terminal for digital television links to each other, carry the test instruction of test parameter to the Digital Television test receiver by the computer transmission, so that the Digital Television test receiver can be according to this test parameter, automatically adjust the signal strength signal intensity of the radiofrequency signal of exporting to receiving terminal for digital television, when the error rate of receiving terminal for digital television feedback reaches the benchmark of the error rate, computer is noted current signal intensity automatically, thereby the tester does not need the various parameters of manual adjustment tester constantly, thereby more convenient when making tester's measurement sensitivity, improved the efficient of test.
Description of drawings
Fig. 1 is the flow chart of the sensitivity test method of receiving terminal for digital television provided by the invention;
Fig. 2 is the structural representation that carries the test parameter script file provided by the invention;
Fig. 3 is the interface schematic diagram of script generator provided by the invention;
Fig. 4 is the structure chart of the sensitivity test system of receiving terminal for digital television provided by the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
In the present invention, by with computer and Digital Television test receiver, receiving terminal for digital television links to each other, carry the test instruction of test parameter to the Digital Television test receiver by the computer transmission, so that the Digital Television test receiver can be according to this test parameter, automatically adjust the signal strength signal intensity of the radiofrequency signal of exporting to receiving terminal for digital television, when the error rate of receiving terminal for digital television feedback reaches the benchmark of the error rate, computer is noted current signal intensity automatically, thereby the tester does not need the various parameters of manual adjustment tester constantly, thereby more convenient when making tester's measurement sensitivity, improved the efficient of test.
Fig. 1 shows the flow process of the sensitivity test method of receiving terminal for digital television provided by the invention, and details are as follows:
In step S101, communicating to connect between detection computations machine and Digital Television test receiver, the receiving terminal for digital television.The Digital Television test receiver generally can provide an industry control interface, and computer can link to each other with the Digital Television test receiver by this industry control interface.
In step S102, the required test parameter of configuration sensitivity test.
As embodiments of the invention, the mode of configuration parameter can for: show the test parameter inputting interface, then, the tester imports corresponding test parameter at this test parameter inputting interface.
For the configuration of the test parameter of being more convenient for, as embodiments of the invention, can carry the script file of test parameter by importing, from script file, obtain test parameter.Consult Fig. 2, show under a certain fixedly frequency, the structure of carrying the test parameter script file, this script file comprises following test parameter: be used to test the low level thresholding the low level hunting zone, adjust the benchmark of stepping, retention time, the error rate.Be used to test the high level thresholding the high level hunting zone, adjust the benchmark of stepping, retention time, the error rate.Be used to test the C/N territory of C/N thresholding, adjust stepping, the benchmark of retention time, the error rate, output level 60 (according to standard, during test C/N thresholding, the level of adjusting signal is to 60DBUV).Wherein, the benchmark of the adjustment stepping of test low level thresholding, high level thresholding, C/N thresholding, retention time, the error rate can adopt same numerical value or different numerical value.In order to make test value more accurate, this script file also is provided with low level correction, high level corrected parameter.
For different frequencies, its needed script file may be different, for the ease of obtaining script file, as embodiments of the invention, can utilize a script generator to generate script file under the different frequent points, consult Fig. 3, show the interface of script generator, (corresponding parameters is: initial frequency according to the frequency range that will test, stop frequency, frequency sweep at interval), frequency bandwidth, symbol rate, parameters such as modulation system, generate script (after the script generation, be basic test unit of a behavior, every row comprises the frequency that will survey, modulation system, bandwidth, symbol rate etc.).As required, in script, need to select the project (high level, low level, C/N) of test.This script can be textual form, and can edit desired test mode as required.
In step S103, send and carry the test instruction of test parameter to the Digital Television test receiver.
In step S104, the Digital Television test receiver is adjusted the signal strength signal intensity of the radiofrequency signal of exporting to receiving terminal for digital television according to this test parameter.
When receiving terminal for digital television during at tested low threshold, the error rate can reduce with the signal strength signal intensity of the radiofrequency signal of input and increases.Beginning (can select the following thresholding of low level hunting zone) under a lower signal strength signal intensity that can't lock frequency, by the value of adjusting stepping, up conditioning signal intensity (being enhancing signal intensity) when the error rate reaches the benchmark of the error rate, obtains the value into low threshold.
When receiving terminal for digital television during in tested high threshold, the error rate can reduce and reduces with input signal strength.Begin (can select the last thresholding of high level hunting zone) under the higher signal intensity that one can't lock frequency, by the value of adjusting stepping, down conditioning signal intensity just can obtain high threshold when the error rate reaches the benchmark of the error rate.
When receiving terminal for digital television during at tested C/N thresholding, the error rate can increase with the signal to noise ratio of input radio frequency signal and reduce.Fix one and can pin signal strength signal intensity frequently, and can't lock beginning of frequency,,, just can when the error rate reaches the benchmark of the error rate, obtain the C/N thresholding toward the adjusted snr value by the value of adjusting stepping than under the low c/n value at one.
When the signal strength signal intensity of adjusting surpasses up and down territory (i.e. the territory up and down of the hunting zone of She Zhiing), just no longer test, think defective.
In step S105, the error rate of receiving digital television receiving terminal feedback.
In step S106, judge whether this error rate reaches the benchmark of the error rate.If do not reach the benchmark of the error rate, then return execution in step S103, if reach the benchmark of the error rate, execution in step S106.The benchmark of this error rate can also can be the value of the user-defined error rate for standard international, the national error rate, and according to the standard difference that is provided with, the precision of the sensitivity that it obtains is also different.
In step S107, note current signal intensity.
Fig. 4 shows the structure of the sensitivity test system of receiving terminal for digital television provided by the invention, this sensitivity test system can be installed in the computer, computer is linked to each other with receiving terminal for digital television, Digital Television test receiver, to realize communicating by letter of sensitivity test system and receiving terminal for digital television, Digital Television test receiver.
This test macro comprises: test parameter dispensing unit 41, test instruction transmitting element 42, error rate receiving element 43, error rate judging unit 44, signal strength signal intensity record cell 45.
The required test parameter of test parameter dispensing unit 41 configuration sensitivity tests, test instruction transmitting element 42 sends and carries the test instruction of this test parameter to the Digital Television test receiver, so that the Digital Television test receiver is according to this test parameter, the signal strength signal intensity of the radiofrequency signal of receiving terminal for digital television is exported in adjustment, the error rate of error rate receiving element 43 receiving digital television receiving terminals feedback, error rate judging unit 44 judges whether this error rate reaches the benchmark of the error rate, when reaching the benchmark of the error rate, signal strength signal intensity record cell 45 is noted current signal intensity.Wherein, the process of the test parameter that test parameter dispensing unit 41 configuration sensitivity tests are required can for: script file imports module 411 and imports the script file that carries test parameter, and test parameter acquisition module 412 obtains test parameter from this script file.
Normal in order to communicate by letter between guaranteeing 3, as embodiments of the invention, before the test parameter dispensing unit 41 of sensitivity test system, can also increase by one and communicate to connect detecting unit 40, by communicating to connect communicating to connect between detecting unit 40 detection computations machines and Digital Television test receiver, the receiving terminal for digital television.
In sum, by with computer and Digital Television test receiver, receiving terminal for digital television links to each other, carry the test instruction of test parameter to the Digital Television test receiver by the computer transmission, so that the Digital Television test receiver can be according to this test parameter, automatically adjust the signal strength signal intensity of the radiofrequency signal of exporting to receiving terminal for digital television, when the error rate of receiving terminal for digital television feedback reaches the benchmark of the error rate, computer is noted current signal intensity automatically, thereby the tester does not need the various parameters of manual adjustment tester constantly, thereby more convenient when making tester's measurement sensitivity, improved the efficient of test.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1, a kind of sensitivity test method of receiving terminal for digital television is characterized in that, said method comprising the steps of:
A, the required test parameter of configuration sensitivity test;
B, transmission are carried the test instruction of described test parameter to the Digital Television test receiver;
C, Digital Television test receiver are adjusted the signal strength signal intensity of the radiofrequency signal of exporting to receiving terminal for digital television according to described test parameter;
The error rate of D, receiving digital television receiving terminal feedback;
E, judge whether the described error rate reaches the benchmark of the error rate, if do not reach the benchmark of the error rate, then return execution in step C, if reach the benchmark of the error rate, execution in step F;
F, note current signal intensity.
2, the method for claim 1 is characterized in that, described steps A specifically comprises step:
The script file of test parameter is carried in A1, importing;
A2, from described script file, obtain test parameter.
3, the method for claim 1 is characterized in that, also comprises step before the described steps A:
Communicating to connect between H, detection computations machine and Digital Television test receiver, the receiving terminal for digital television.
4, the method for claim 1 is characterized in that, the benchmark of the described error rate is the error rate standard international, that country announces or is the value of the user-defined error rate.
5, the method for claim 1 is characterized in that, described test parameter comprises:
Test the benchmark of the required low level hunting zone of low level thresholding, retention time, adjustment stepping, the error rate, test the benchmark of the required high level hunting zone of high level thresholding, retention time, adjustment stepping, the error rate, the required C/N territory of test C/N thresholding, the benchmark of retention time, adjustment stepping, the error rate.
6, method as claimed in claim 4 is characterized in that, described test parameter also comprises: low level correction, high level correction.
7, a kind of sensitivity test system of receiving terminal for digital television is characterized in that, described system comprises:
The test parameter dispensing unit is used to dispose the required test parameter of sensitivity test;
The test instruction transmitting element, be used to send carry described test parameter test instruction to the Digital Television test receiver so that the Digital Television test receiver is according to described test parameter, adjust the signal strength signal intensity of the radiofrequency signal of exporting to receiving terminal for digital television;
Error rate receiving element is used for the error rate that the receiving digital television receiving terminal feeds back;
Error rate judging unit is used to judge whether the described error rate reaches the benchmark of the error rate; And
The signal strength signal intensity record cell is used for noting current signal intensity when reaching the benchmark of the error rate.
8, system as claimed in claim 7 is characterized in that, described test parameter dispensing unit also comprises:
Script file imports module, is used to import the script file that carries test parameter; And
The test parameter acquisition module is used for obtaining test parameter from described script file.
9, system as claimed in claim 7 is characterized in that, described system also comprises:
Communicate to connect detecting unit, be used for communicating to connect between detection computations machine and Digital Television test receiver, the receiving terminal for digital television.
10, system as claimed in claim 7 is characterized in that, the benchmark of the described error rate is the error rate standard international, that country announces or is the value of the user-defined error rate.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2009101056338A CN101511039A (en) | 2009-02-25 | 2009-02-25 | Method and system for testing sensitivity of digital television acceptance terminal |
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| CNA2009101056338A CN101511039A (en) | 2009-02-25 | 2009-02-25 | Method and system for testing sensitivity of digital television acceptance terminal |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102014294A (en) * | 2010-10-25 | 2011-04-13 | 福建新大陆通信科技股份有限公司 | Method for realizing high-definition hand-hold multi-functional digital video broadcasting-cable (DVB-C) detector |
| CN102510516A (en) * | 2011-10-17 | 2012-06-20 | 深圳创维数字技术股份有限公司 | Method and device for detecting tuner sensitivity |
| CN102740109A (en) * | 2011-04-15 | 2012-10-17 | 中国移动通信集团公司 | Method, system and device for determining receiving sensitivity of terminal |
| 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 |
| CN103167315A (en) * | 2011-12-16 | 2013-06-19 | 天津三星电子有限公司 | Digital television receptivity automatic test system |
| CN105281851A (en) * | 2015-10-28 | 2016-01-27 | 南方科技大学 | Method and device for rapidly detecting sensitivity of wireless radio-frequency receiver |
| CN105933701A (en) * | 2016-05-11 | 2016-09-07 | 晶晨半导体(上海)有限公司 | System and method for automatically testing DTMB properties |
| CN106452617A (en) * | 2016-08-31 | 2017-02-22 | 国网江西省电力公司电力科学研究院 | Micro power wireless communication unit testing device |
| WO2017133359A1 (en) * | 2016-02-02 | 2017-08-10 | 广州视源电子科技股份有限公司 | Method and system for measuring performance parameter of display device |
| WO2018064954A1 (en) * | 2016-10-09 | 2018-04-12 | 深圳创维数字技术有限公司 | Parameter testing method and system for multi-tuner set-top box |
| CN107911180A (en) * | 2017-11-16 | 2018-04-13 | 四川长虹电器股份有限公司 | A kind of spacial radio frequency performance test method of large scale end product |
| CN109787724A (en) * | 2017-11-10 | 2019-05-21 | 京东方科技集团股份有限公司 | The determination method, apparatus and communication system of configured transmission configuration information |
| CN110995373A (en) * | 2019-12-19 | 2020-04-10 | 紫光展讯通信(惠州)有限公司 | Conduction sensitivity measuring method and device, storage medium and comprehensive measuring terminal |
| CN112040439A (en) * | 2020-07-27 | 2020-12-04 | 深圳市金溢科技股份有限公司 | OBU radio frequency parameter calibration method, OBU device, radio frequency device and system |
| CN112040439B (en) * | 2020-07-27 | 2024-05-31 | 深圳市金溢科技股份有限公司 | OBU radio frequency parameter calibration method, OBU device, radio frequency device and system |
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2009
- 2009-02-25 CN CNA2009101056338A patent/CN101511039A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102014294A (en) * | 2010-10-25 | 2011-04-13 | 福建新大陆通信科技股份有限公司 | Method for realizing high-definition hand-hold multi-functional digital video broadcasting-cable (DVB-C) detector |
| CN102740109A (en) * | 2011-04-15 | 2012-10-17 | 中国移动通信集团公司 | Method, system and device for determining receiving sensitivity of terminal |
| CN102740109B (en) * | 2011-04-15 | 2014-12-10 | 中国移动通信集团公司 | Method, system and device for determining receiving sensitivity of terminal |
| 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 |
| CN102510516A (en) * | 2011-10-17 | 2012-06-20 | 深圳创维数字技术股份有限公司 | Method and device for detecting tuner sensitivity |
| CN103167315A (en) * | 2011-12-16 | 2013-06-19 | 天津三星电子有限公司 | Digital television receptivity automatic test system |
| CN105281851A (en) * | 2015-10-28 | 2016-01-27 | 南方科技大学 | Method and device for rapidly detecting sensitivity of wireless radio-frequency receiver |
| WO2017133359A1 (en) * | 2016-02-02 | 2017-08-10 | 广州视源电子科技股份有限公司 | Method and system for measuring performance parameter of display device |
| WO2017193772A1 (en) * | 2016-05-11 | 2017-11-16 | 晶晨半导体(上海)有限公司 | System and method for automatically testing performance of dtmb |
| CN105933701A (en) * | 2016-05-11 | 2016-09-07 | 晶晨半导体(上海)有限公司 | System and method for automatically testing DTMB properties |
| CN106452617A (en) * | 2016-08-31 | 2017-02-22 | 国网江西省电力公司电力科学研究院 | Micro power wireless communication unit testing device |
| WO2018064954A1 (en) * | 2016-10-09 | 2018-04-12 | 深圳创维数字技术有限公司 | Parameter testing method and system for multi-tuner set-top box |
| CN109787724A (en) * | 2017-11-10 | 2019-05-21 | 京东方科技集团股份有限公司 | The determination method, apparatus and communication system of configured transmission configuration information |
| CN109787724B (en) * | 2017-11-10 | 2021-12-14 | 京东方科技集团股份有限公司 | Method and device for determining transmission parameter configuration information and communication system |
| CN107911180A (en) * | 2017-11-16 | 2018-04-13 | 四川长虹电器股份有限公司 | A kind of spacial radio frequency performance test method of large scale end product |
| CN110995373A (en) * | 2019-12-19 | 2020-04-10 | 紫光展讯通信(惠州)有限公司 | Conduction sensitivity measuring method and device, storage medium and comprehensive measuring terminal |
| CN112040439A (en) * | 2020-07-27 | 2020-12-04 | 深圳市金溢科技股份有限公司 | OBU radio frequency parameter calibration method, OBU device, radio frequency device and system |
| CN112040439B (en) * | 2020-07-27 | 2024-05-31 | 深圳市金溢科技股份有限公司 | OBU radio frequency parameter calibration method, OBU device, radio frequency device and system |
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Application publication date: 20090819 |