CN104202665A - Method for automatically modifying central frequency point of set top box - Google Patents
Method for automatically modifying central frequency point of set top box Download PDFInfo
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- CN104202665A CN104202665A CN201410444356.4A CN201410444356A CN104202665A CN 104202665 A CN104202665 A CN 104202665A CN 201410444356 A CN201410444356 A CN 201410444356A CN 104202665 A CN104202665 A CN 104202665A
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Abstract
The invention discloses a method for automatically modifying central frequency point of a set top box. The method includes step 1, inserting a private descriptor during first circulation of a front-end code stream NIT (network information table); step 2, analyzing the NIT, namely acquiring data of the whole NIT from a front end by the set top box, finding the private descriptor in the data of the NIT according to description standards, respectively analyzing frequency parameters, symbol rate parameters and modulation mode parameters, and storing parameters of new frequency point into a FLASH area corresponding to the set top box. Compared with the prior art, the method has the advantages that a front-end system is enabled to broadcast configuration files containing central frequency point description tables in real time at any frequency point, and when broadcasting front-end central frequency point is changed, value of the central frequency point of the configuration file of a central frequency point descriptor of code stream broadcast in real time is changed. The set top box monitors the central frequency point value in real time, and once changes are caused, a new frequency point is set to be the central frequency point, so that automatic modifying of the central frequency point is realized.
Description
Technical field
The present invention relates to a kind of field of set-top, relate in particular to a kind of method of automatic amendment Set Top Box center frequency point.
Background technology
Along with the reinforcement of national digital TV entirety translation dynamics, each province, the front end system of oneself has all been built by city and radio and television departments at different levels.But because of digital television frequencies resource-constrained, effective frequency range Gongwei 115-858MHZ altogether, just unavoidably causes the frequency of a lot of broadcasting and TV front ends to repeat, and comprises center frequency point.Particularly adjacent area can cause center frequency point co-channel interference, finally affects program audience.
Center frequency point, is the special frequency that broadcasting and TV front end is specified, and it act as:
1. send NIT table, describe all frequency point information of front end, Set Top Box realizes web search function with this.
2. broadcast online upgrading data, Set Top Box is at start this frequency of locking with in the time being switched to this frequency, if front end has been broadcast upgrading stream, Set Top Box will be updated to up-to-date software.
3. the specific function that other broadcasting and TV are specified.
Center frequency point is very important for broadcasting and TV, in the time of center frequency point and the appearance interference of adjacent broadcasting and TV region, will have influence on the realization of these two functions, finally cause user cannot search program, and set-top box software cannot upgrade.For this problem, present general way is exactly that broadcasting and TV are adjusted front end center frequency point, changes the frequency that there will not be interference into.But because previous center frequency point is fixing can not automatically the upgrading of software, must upgrade to realize by amendment software again large net.
Thereby in Set Top Box, realize center frequency point automatically upgrade seem very must and important.
Summary of the invention
Object of the present invention is just to provide one to address the above problem, and set-top box software needn't be netted greatly upgrading just can realize the method for amendment Set Top Box center frequency point automatically.
To achieve these goals, the technical solution used in the present invention is: a kind of method of automatic amendment Set Top Box center frequency point, method is as follows, the first step is shown first circulation at front end code stream NIT and is inserted private setting descriptor, second step is resolved NIT table, first Set Top Box obtains the data of whole NIT table from front end, from NIT table data, find private setting descriptor according to describing specification again, and resolve respectively the frequency parameter of frequency of making new advances, symbol rate parameter and modulation system parameter, deposit the parameter of new frequency FLASH region corresponding to Set Top Box in, can normally realize NIT search, aerial upgrade, advertisement,
As preferably, described private setting descriptor is NIT_DES_TAG descriptor;
As preferably, after set-top-box opening starts, monitor in real time the frequency point information under NIT_DES_TAG description in NIT table;
As preferably, after broadcasting and TV adjustment center frequency point, insert and broadcast the descriptor of the NIT with NIT_DES_TAG at any frequency of front end, set center frequency point; Set Top Box end, in the time finding frequency point information and preservation before inconsistent, is preserved new frequency point parameters, uses new locking frequency point tuner to complete corresponding function when web search and online upgrading next time.
Compared with prior art, the invention has the advantages that: the configuration file that the present invention makes front end system comprise center frequency point descriptor table at any frequency real-time broadcasting, in the time that broadcasting and TV front end center frequency point changes, change the value of the configuration file center frequency point of real-time broadcasting code stream center frequency point descriptor.Set Top Box is this center frequency point value of Real-Time Monitoring, once change, by frequency centered by new frequency point setting, thereby has realized the automatic amendment of Set Top Box center frequency point.Described method, efficiency is high, safe and reliable, operation maintenance convenient.After having avoided advertisement front end center frequency point to adjust, backend machine top box must be revised the problem that software is upgraded again.Reduce the operation maintenance cost of Set Top Box manufacturer and broadcasting and TV.
Brief description of the drawings
Fig. 1 is principle of the invention block diagram.
Embodiment
The invention will be further described below.
Embodiment: referring to Fig. 1, a kind of method of automatic amendment Set Top Box center frequency point, method is as follows, shows first circulation insert private setting descriptor at front end code stream NIT, and described private setting descriptor is NIT_DES_TAG descriptor, as:
Resolve NIT table, first Set Top Box obtains the data of whole NIT table from front end, from NIT table data, find private setting descriptor according to describing specification again, and resolve respectively make new advances frequency parameter, symbol rate parameter and the modulation system parameter of frequency, deposit the parameter of new frequency FLASH region corresponding to Set Top Box in, can normally realize NIT search, aerial upgrade, advertisement.
After set-top-box opening starts, monitor in real time the frequency point information under NIT_DES_TAG description in NIT table;
Broadcasting and TV are adjusted after center frequency point, insert and broadcast the descriptor of the NIT with NIT_DES_TAG at any frequency of front end, set center frequency point; Set Top Box end, in the time finding frequency point information and preservation before inconsistent, is preserved new frequency point parameters, uses new locking frequency point tuner to complete corresponding function when web search and online upgrading next time.
The present invention makes front end system at the configuration file that frequency real-time broadcasting comprises center frequency point descriptor table arbitrarily, in the time that broadcasting and TV front end center frequency point changes, changes the value of the configuration file center frequency point of real-time broadcasting code stream center frequency point descriptor.Set Top Box is this center frequency point value of Real-Time Monitoring, once change, by frequency centered by new frequency point setting, thereby has realized the automatic amendment of Set Top Box center frequency point.All problems of large net upgrading of Set Top Box are solved after broadcasting and TV front end amendment center frequency point.Use after method of the present invention, no matter how broadcasting and TV front end revises center frequency point, and set-top box software needn't make any renewal just can complete the amendment of center frequency point automatically.Thereby reduction software development cost, this method efficiency is high, safe and reliable simultaneously, operation maintenance convenient.
Above the method for a kind of automatic amendment Set Top Box center frequency point provided by the present invention is carried out to detailed introduction, applied specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, to be possible to change of the present invention and improvement, and can not exceed design and the scope of accessory claim defined, in sum, this description should not be construed as limitation of the present invention.
Claims (4)
1. automatically revise the method for Set Top Box center frequency point for one kind, it is characterized in that: method is as follows, the first step is shown first circulation at front end code stream NIT and is inserted private setting descriptor, second step is resolved NIT table, first Set Top Box obtains the data of whole NIT table from front end, from NIT table data, find private setting descriptor according to describing specification again, and resolve respectively make new advances frequency parameter, symbol rate parameter and the modulation system parameter of frequency, deposit the parameter of new frequency FLASH region corresponding to Set Top Box in, can normally realize NIT search, aerial upgrade, advertisement.
2. the method for a kind of automatic amendment Set Top Box center frequency point according to claim 1, is characterized in that: described private setting descriptor is NIT_DES_TAG descriptor.
3. the method for wanting a kind of automatic amendment Set Top Box center frequency point described in 2 according to right, is characterized in that: after set-top-box opening starts, monitor in real time the frequency point information under NIT_DES_TAG description in NIT table.
4. the method for wanting a kind of automatic amendment Set Top Box center frequency point described in 3 according to right, is characterized in that: broadcasting and TV are adjusted after center frequency point, insert and broadcast the descriptor of the NIT with NIT_DES_TAG at any frequency of front end, set center frequency point; Set Top Box end when find frequency point information and before preservation inconsistent time, preserve new frequency point parameters, when web search is with online upgrading next time, use new locking frequency point tuner to become corresponding function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410444356.4A CN104202665A (en) | 2014-09-03 | 2014-09-03 | Method for automatically modifying central frequency point of set top box |
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| CN201410444356.4A CN104202665A (en) | 2014-09-03 | 2014-09-03 | Method for automatically modifying central frequency point of set top box |
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| CN105187904A (en) * | 2015-09-17 | 2015-12-23 | 青岛海信宽带多媒体技术有限公司 | Digital reception device and program searching method |
| CN106385605A (en) * | 2016-09-30 | 2017-02-08 | 深圳市九洲电器有限公司 | Set top box primary frequency point updating method and system |
| CN108235061A (en) * | 2018-03-02 | 2018-06-29 | 深圳创维数字技术有限公司 | Dominant frequency point update method, device, terminal and computer-readable medium |
| CN108391172A (en) * | 2018-03-29 | 2018-08-10 | 珠海迈科智能科技股份有限公司 | A kind of method that set-top box multifrequency point OTA upgrades automatically |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105187904A (en) * | 2015-09-17 | 2015-12-23 | 青岛海信宽带多媒体技术有限公司 | Digital reception device and program searching method |
| CN106385605A (en) * | 2016-09-30 | 2017-02-08 | 深圳市九洲电器有限公司 | Set top box primary frequency point updating method and system |
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| CN108235061A (en) * | 2018-03-02 | 2018-06-29 | 深圳创维数字技术有限公司 | Dominant frequency point update method, device, terminal and computer-readable medium |
| CN108235061B (en) * | 2018-03-02 | 2020-09-15 | 深圳创维数字技术有限公司 | Main frequency point updating method, device, terminal and computer readable medium |
| CN108391172A (en) * | 2018-03-29 | 2018-08-10 | 珠海迈科智能科技股份有限公司 | A kind of method that set-top box multifrequency point OTA upgrades automatically |
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