CN101959049B - Method for filtering EIT (Electronic Impedance Tomography) and digital television all-in-one machine adopting same - Google Patents
Method for filtering EIT (Electronic Impedance Tomography) and digital television all-in-one machine adopting same Download PDFInfo
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- CN101959049B CN101959049B CN 200910108695 CN200910108695A CN101959049B CN 101959049 B CN101959049 B CN 101959049B CN 200910108695 CN200910108695 CN 200910108695 CN 200910108695 A CN200910108695 A CN 200910108695A CN 101959049 B CN101959049 B CN 101959049B
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Abstract
The invention is suitable for the technical field of digital televisions and provides a method for filtering EIT (Electronic Impedance Tomography) and a digital television all-in-one machine adopting the same. The method comprises the following steps of: a, respectively setting the filter parameters of two or more filters to be two or more EIT table identifiers, wherein each filter corresponds to one EIT table identifier; and b, filtering corresponding EITs in parallel through the two or more filters, and analyzing EIT data obtained by filtering. The technical scheme of the invention can be used for receiving and analyzing all EIT data in one EIT transmission cycle period and particularly suitable for receiving EIT with large data quantity so as to realize rapid EPG (Electronic Program Guide) search of the digital television all-in-one machine, and when a user selects to check EPG information, the EPG information can be immediately called out to the user, therefore, product performance is greatly improved and user waiting time is reduced.
Description
Technical field
The invention belongs to the digital television techniques field, relate in particular to the digital TV integrated machine of method and employing the method for a kind of EIT of filtration.
Background technology
Include a lot of information on services in the program transport streams of existing Digital Television (TS stream), these information on services comprise programm name, length, time started, content introduction etc., can help user selection to watch.Existing digital TV integrated machine or set-top box be much with electronic program guides (EPG) function, and EPG has integrated these information on services and represented to the user and help the user selection program.
Program data among the EPG is from EIT (the Event Information Table that transmits in the TS stream, Event Information Table), the Table ID (table identifier) of EIT comprises 0x4e, 0x4f, 0x50～0x5f and 0x60～0x6f, wherein Table ID is that the EIT of 0x50～0x5f and 0x60～0x6F has comprised 7 days program data, data volume is more, therefore filters the mode of EIT and the search speed that speed has directly determined EPG.
Existing EIT filters a variety of designs, a kind of design of polling type comparatively commonly wherein, and namely filtering first EIT and the Table ID that Table ID is 0x50 is the EIT of 0x60.Because all comprised the field of a last_table_id in each EIT table, Table ID is that the value of the last_table_id that comprises among the EIT of 0x50 is 0x51 in the 0x5f one, and Table ID is that the value of the last_table_id that comprises among the EIT of 0x60 is 0x61 in the 0x6f one.Filter out EIT that Table ID is 0x50 and Table ID and be after the EIT of 0x60, by last_table_id wherein, how many EIT tables are system just can judge is sending, be 0x52 such as last_table_id, just can judge that total Table ID is 0x50,0x51, three EIT tables of 0x52 are transmitting, and system just can filter respectively this three EIT tables again.
The way of search of above-mentioned EPG need to spend the long time, and the user can only wait in this process, so that Product Usability reduces, therefore is necessary to provide a kind of new way of search to improve this aspect performance.
Summary of the invention
The object of the present invention is to provide the digital TV integrated machine of method and employing the method for a kind of EIT of filtration, be intended to solve the problem of digital TV integrated machine fast filtering EIT.
The present invention is achieved in that the method for a kind of EIT of filtration, and described method comprises:
A, the filtration parameter of two or more filters is set to respectively the table identifier of two or more EIT, each filter is corresponding with the table identifier of an EIT;
B, by described two or more its corresponding EIT of filter parallel filtering, the EIT data that filtration obtains are resolved.
Wherein step a specifically comprises:
A1, filtration parameter 0x50～0x5f is set to respectively in 16 filters, filtration parameter 0x60～0x6f is set to respectively in other 16 filters, the corresponding filtration parameter of each filter.
Wherein step b specifically comprises:
B1, by 32 EIT of 32 filter parallel filterings, each filter filters EIT corresponding to its filtration parameter;
B2, startup parsing task, the parallel parsing filtered 32 EIT that obtain.
Wherein also comprise after the step b:
C, the EIT data that parsing is obtained store in the memory.
The present invention also provides a kind of digital TV integrated machine, and described digital TV integrated machine comprises MCU, memory and demultiplexing module, wherein:
Described MCU is used for to described demultiplexing module input filtration parameter, and two or more the table identifier of EIT is set to respectively two or more filter of described demultiplexing module, and each filter is corresponding with the table identifier of an EIT; Described MCU also is used for the EIT that filtration obtains is resolved, and stores analysis result into described memory;
Described demultiplexing module is used for receiving the filtration parameter of described MCU input, and by described two or more EIT corresponding to its filtration parameter of filter parallel filtering, the EIT transfer of data that filtration is obtained is to described MCU;
Described memory is used for storing the EIT analysis result of described MCU transmission.
More specifically, described MCU comprises that specifically filtration parameter arranges module and EIT parsing module, and described filtration parameter arranges module and links to each other with described demultiplexing module, is used for to described demultiplexing module described filtration parameter being set; Described EIT parsing module links to each other with memory with described demultiplexing module, is used for receiving the EIT data of described demultiplexing module transmission, and the task of starting two or more is resolved described EIT data parallel, stores analysis result into memory.
More specifically, described MCU is used for filtration parameter 0x50～0x5f is set to respectively 16 filters, filtration parameter 0x60～0x6f is set to respectively in other 16 filters the corresponding filtration parameter of each filter.
More specifically, described demultiplexing module is used for by its 32 EIT corresponding to its filtration parameter of filter parallel filtering, and each filter filters an EIT.
More specifically, described MCU also is used for the passage of described demultiplexing module related with filter.
The present invention overcomes the deficiencies in the prior art, start the EPG function the user, when perhaps the digital TV integrated machine backstage obtains the EPG information of current frequency, the EIT that system is different with each Table id is set to respectively in the different filters, the EIT that wherein each Table id is corresponding goes to filter with a filter, by a plurality of filter parallel filtering EIT, then the data parallel of a plurality of EIT received and resolve.Technical scheme provided by the invention can receive and resolve all EIT data in the cycle period that EIT sends, being particularly useful for the large EIT of data volume receives, thereby realize the fast search of digital TV integrated machine EPG, when user selection is checked EPG information, just can access immediately these EPG information to the user, improve greatly properties of product, reduced user's stand-by period.
Description of drawings
Fig. 1 is the demultiplexing module structure chart of Digital Television;
Fig. 2 is embodiment of the invention flow chart;
Fig. 3 is the digital TV integrated machine schematic diagram of the embodiment of the invention;
Fig. 4 is the MCU theory diagram of the embodiment of the invention.
Embodiment
Technical scheme provided by the invention is: start the EPG function the user, when perhaps the digital TV integrated machine backstage obtains the EPG information of current frequency, each EIT that Table id is different of system is set to respectively in the different filters, the EIT that wherein each Table id is corresponding goes to filter with a filter, by a plurality of filter parallel filtering EIT, then the data of a plurality of EIT are carried out parallel receive and parsing.
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
The demultiplexing module structure chart of Digital Television as shown in Figure 1, comprise 32 passages (Slot) and 32 filters (Filter) and the circular buffering (Cycle Memory) corresponding with each filter, wherein Slot can be corresponding one by one with the connected mode of Filter, namely the related Filter of Slot also can be the related a plurality of Filter of a Slot.Simultaneously, 7 days EPG information is to carry by 32 EIT among the TS, the Table ID of each EIT is respectively 0x50～0x5f and 0x60～0x6F, in the technical scheme provided by the invention, 0x50～0x5f and 0x60～0x6F are set to respectively in 32 filters, each EIT goes to filter with a filter, by 32 EIT of 32 filter parallel filterings, then receives simultaneously and resolve the data of each EIT.
During specific implementation technical scheme provided by the invention, because EIT is in the TS bag of PID (Packet Identifier) for 0x12, therefore need to be set to 0x12 by PID Slot; As stated in the Background Art, the Table id that comprises the EIT of seven days EPG information is respectively 0x50～0x5f and 0x60～0x6f, filtration parameter with 32 Filter in the embodiment of the invention is set to respectively 0x50～0x5f and 0x60～0x6f, and Slot is related with Filter.
Finish after the above-mentioned setting, 32 filters of demultiplexing module will filter 32 EIT respectively, the transfer of data that filtration obtains is stored parallel reception and the parsing of finishing each EIT in a plurality of tasks of the characteristic of system's recycling multitask system in circular buffering.
In digital television system, EIT is that circulation sends, and the time interval is indefinite from several seconds to tens seconds, is called the EIT transmission cycle.After each transmission cycle, system can whether all EIT data all obtain according to the information check among the EIT, concrete method is by the EIT table of receiving is analyzed, how many EIT can learn has transmitting in the TS stream, each EIT what sections (section) is made of again, and whether all system just can check complete reception of EIT data thus thus.
Embodiment of the invention flow chart specifically comprises following step as shown in Figure 2:
1, the user starts EPG function or the execution backstage filtration EIT of system function;
2, the PID of system Slot is set to 0x12, and the filtration parameter of 32 Filter is set to respectively 0x50～0x5f and 0x60～0x6f, and Slot is related with Filter, filters;
3, the EIT reception notification of response demultiplexing module, the circular buffering corresponding from Filter receives the EIT data;
4, the EIT data that receive are resolved, analysis result is saved in the memory;
When 5, the EIT transmission cycle finishes, check that whether all Duan Douyi of EIT finish receiving? if so, turn step 7, otherwise turn step 6;
6, the not complete filtration parameter that receives EIT is set to Filter again and filters, turn step 3.
7, process ends.
The schematic diagram of the digital TV integrated machine that the embodiment of the invention provides comprises MCU (microprocessor), remote control reception module, memory and demultiplexing module as shown in Figure 3, wherein:
The remote control reception module is connected with MCU, is used for receiving the remote signal that the user sends by remote controller, demodulates remote control coding from the remote signal that receives, and remote control coding is transferred to MCU; In the embodiment of the invention, the user can start the EPG function or change the platform operation by remote controller, and system will start according to the remote control coding of correspondence the filtration of EIT;
MCU links to each other with memory, is used for the remote control coding of remote control reception module transmission is decoded, and controls the operation of each correlation function module according to decoded result; As starting the EIT filtering process according to the remote control coding that starts the EPG function or change the platform operational correspondence, to demultiplexing module input filtration parameter, PIDSlot is set to 0x12, the filtration parameter of 32 Filter is set to respectively 0x50～0x5f and 0x60～0x6f, and the Slot of demultiplexing module is related with Filter; The EIT reception notification of response demultiplexing module receives EIT from circular buffering corresponding to each Filter, the EIT that receives is resolved, and analysis result is stored in the memory etc.;
Demultiplexing module links to each other with MCU, is used for receiving the filtration parameter of MCU input, and by its 32 Filter parallel filtering EIT, the EIT transfer of data that filtration is obtained arrives MCU;
Memory is used for the EIT analysis result of store M CU transmission.
Specifically, the schematic diagram of MCU comprises that remote control coding parsing module, filtration parameter arrange module and EIT parsing module as shown in Figure 4, and the remote control coding parsing module arranges module with filtration parameter and links to each other with the EIT parsing module.Wherein, the remote control coding parsing module links to each other with the remote control reception module, is used for the remote control coding of remote control reception module transmission is decoded, and starts filtration parameter according to decoded result module and EIT parsing module are set; Filtration parameter arranges module and links to each other with demultiplexing module, is used for to demultiplexing module filtration parameter being set; The EIT parsing module links to each other with memory with demultiplexing module, is used for receiving the EIT of demultiplexing module transmission, and EIT is resolved, and stores analysis result into memory.
As mentioned above, the invention provides technical scheme and can in the cycle period that EIT sends, receive and resolve all EIT data, be particularly useful for the large EIT of data volume and receive, thereby realize the fast search of digital TV integrated machine EPG.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing 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 (7)
1. method of filtering EIT, described method comprises:
A, the filtration parameter of two or more filters is set to respectively the table identifier of two or more EIT, each filter is corresponding with the table identifier of an EIT; And filtration parameter 0x50～0x5f is set to respectively in 16 filters, filtration parameter 0x60～0x6f is set to respectively in other 16 filters, the corresponding filtration parameter of each filter;
B, by described two or more its corresponding EIT of filter parallel filtering, the EIT data that filtration obtains are resolved.
2. method according to claim 1 is characterized in that, wherein step b specifically comprises:
B1, by 32 EIT of 32 filter parallel filterings, each filter filters EIT corresponding to its filtration parameter;
B2, startup parsing task, the parallel parsing filtered 32 EIT that obtain.
3. method according to claim 1 is characterized in that, wherein also comprises after the step b:
C, the EIT data that parsing is obtained store in the memory.
4. a digital TV integrated machine is characterized in that, described digital TV integrated machine comprises MCU, memory and demultiplexing module, wherein:
Described MCU is used for to described demultiplexing module input filtration parameter, and two or more the table identifier of EIT is set to respectively two or more filter of described demultiplexing module, and each filter is corresponding with the table identifier of an EIT; Described MCU also is used for the EIT that filtration obtains is resolved, and stores analysis result into described memory; And filtration parameter 0x50～0x5f is set to respectively 16 filters, filtration parameter 0x60～0x6f is set to respectively in other 16 filters the corresponding filtration parameter of each filter;
Described demultiplexing module is used for receiving the filtration parameter of described MCU input, and by described two or more EIT corresponding to its filtration parameter of filter parallel filtering, the EIT transfer of data that filtration is obtained is to described MCU;
Described memory is used for storing the EIT analysis result of described MCU transmission.
5. digital TV integrated machine according to claim 4, it is characterized in that, described MCU comprises that specifically filtration parameter arranges module and EIT parsing module, and described filtration parameter arranges module and links to each other with described demultiplexing module, is used for to described demultiplexing module described filtration parameter being set; Described EIT parsing module links to each other with memory with described demultiplexing module, is used for receiving the EIT data of described demultiplexing module transmission, and the task of starting two or more is resolved described EIT data parallel, stores analysis result into memory.
6. digital TV integrated machine according to claim 4 is characterized in that, described demultiplexing module is used for by its 32 EIT corresponding to its filtration parameter of filter parallel filtering, and each filter filters an EIT.
7. digital TV integrated machine according to claim 4 is characterized in that, described MCU also is used for the passage of described demultiplexing module related with filter.
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| CN102209267B (en) * | 2011-05-13 | 2014-11-26 | 深圳Tcl新技术有限公司 | Method for acquiring multi-frequency-point EPG (Electronic Program Guide) information |
| CN102215430A (en) * | 2011-06-02 | 2011-10-12 | 福建新大陆通信科技股份有限公司 | Method for avoiding data overflow by filtering EPG (electronic program guide) through STB (set top box) |
| CN103327399B (en) * | 2013-06-03 | 2016-08-24 | 四川长虹电器股份有限公司 | The method quickly representing EPG data |
| CN106060598A (en) * | 2016-07-18 | 2016-10-26 | 青岛海信传媒网络技术有限公司 | Electronic program guide (EPG) information generating method and device |
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| CN101137035A (en) * | 2006-08-29 | 2008-03-05 | 乐金电子(中国)研究开发中心有限公司 | Apparatus and method for obtaining digital television multiple days electronic program guide data |
| CN101212643A (en) * | 2006-12-28 | 2008-07-02 | 深圳市同洲电子股份有限公司 | One-way CATV network based interactive VOD system and method |
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| KR20090008064A (en) * | 2007-07-16 | 2009-01-21 | 삼성전자주식회사 | Method for searching automatically and video apparatus using the same |
| JP2009105494A (en) * | 2007-10-19 | 2009-05-14 | Funai Electric Co Ltd | Digital broadcasting receiver |
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| CN101137035A (en) * | 2006-08-29 | 2008-03-05 | 乐金电子(中国)研究开发中心有限公司 | Apparatus and method for obtaining digital television multiple days electronic program guide data |
| CN101212643A (en) * | 2006-12-28 | 2008-07-02 | 深圳市同洲电子股份有限公司 | One-way CATV network based interactive VOD system and method |
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