CN103269441B - A kind of method of digital television program fast search - Google Patents
A kind of method of digital television program fast search Download PDFInfo
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- CN103269441B CN103269441B CN201310207618.0A CN201310207618A CN103269441B CN 103269441 B CN103269441 B CN 103269441B CN 201310207618 A CN201310207618 A CN 201310207618A CN 103269441 B CN103269441 B CN 103269441B
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Abstract
The present invention relates to digital TV field, a kind of method that the invention discloses digital television program fast search, its method for fast searching specifically comprises the steps of the whole program information table generating whole network on front-end server, described whole program information table includes whole programme informations of whole network, and whole program information table is put in operator's dominant frequency point；It is operator's dominant frequency point that tuner in DTV STB arranges search frequency, when starting program searching, DTV STB gets the whole program information table leaving operator's dominant frequency point in above-mentioned steps in, whole program information table, thus whole programme informations of obtaining in whole network, are finally stored in DTV STB by DTV STB.Make Set Top Box energy quick obtaining to all programme informations in whole network.
Description
Technical field
The present invention relates to digital television field, a kind of method particularly relating to digital television program fast search.
Background technology
Along with popularizing of DTV, increasing family has enjoyed the benefit that DTV brings.But DTV STB is before the use, it is necessary to first pass through program searching to obtain the TV programme that front end operator provides.For current cable operator, each operator generally provides multiple frequency, multiplexing many sets digital television program again under each frequency.Therefore, whole program searching to be completed and need the factor such as transmission interval time depending on carrier network frequency quantity, PAT/PMT/SDT form.
Prior art carries out program searching and can relate to Program Association Table (PAT, ProgramAssociationTable), Program Map Table (PMT, Program MapTable), business statement table (SDT, ServiceDescriptionTable), network information table (NIT, NetworkinformationTable) etc. form.Wherein PAT provides the position of corresponding Program Map Table (PMT), and namely the value of the PID Packet Identifier (PID, PacketIdentifier) of TS bag, also provides for the position of network information table (NIT) simultaneously.In prior art, the program searching that will complete DTV STB is generally adopted following two mode.
First, frequency search is carried out one by one by sweep method.Search is set and starts and terminate frequency (being usually lowest frequency and most high frequency as starting or terminating frequency), then from starting frequency search.Once find certain frequency lockable, obtaining program Service_ID and PMT_PID under this frequency again through obtaining pat table lattice, then obtaining the audio frequency and video pid information of program again through pmt table lattice, get the program name information of program finally by SDT form.After completing the program searching of this frequency, it is further continued for the program searching of next frequency, until it reaches terminate frequency.Such mode Set Top Box to search for each frequency one by one, then obtains the programme information of each frequency one by one, it is necessary to the long time.
Second, effective frequency is carried out program searching.First pass through operator's dominant frequency point and obtain network information table NIT, then analyze the transmission sub-DeliverySystemDescriptors of system description in this form, obtain the whole effectively frequency point information in network, then search for according to these effective frequency point information frequencies one by one.This mode with above-mentioned the first compare, what save on invalid frequency is consuming time, for the way of search of current main flow digital television program.But, such mode still ratio is relatively time-consuming, this is because across frequency ratio relatively time-consuming (because certainly existing multiple effective frequency) when searching on the one hand, still further aspect Set Top Box to obtain each TV programme and need nonetheless remain for carrying out just completing at 3 forms, three forms of PAT, PMT and SDT could obtain the complete information of a program after being required for access, and in a lot of situation, the program of DTV has up to a hundred, and such search speed certainly can not meet the needs of user.
Thus, both the above mode all can not realize quickly carrying out the program searching of DTV, it is impossible to meets the needs of user.
Summary of the invention
It is an object of the invention to exist for digital TV program searching method of the prior art consuming time long, it is impossible to meet the technical problem of user's needs, it is provided that a kind of method of digital television program fast search.
The purpose of the present invention is realized by following technical proposals:
A kind of method of digital television program fast search, its method for fast searching specifically comprises the steps of the whole program information table generating whole network on front-end server, described whole program information table includes whole programme informations of whole network, and whole program information table is put in operator's dominant frequency point；It is operator's dominant frequency point that tuner in DTV STB arranges search frequency, when starting program searching, DTV STB gets the whole program information table leaving operator's dominant frequency point in above-mentioned steps in, whole program information table, thus whole programme informations of obtaining in whole network, are finally stored in DTV STB by DTV STB.Make the Set Top Box can the whole programme information of quick obtaining.
Further, above-mentioned whole program information table is whole program information table of effective frequency in whole network.Filter out invalid frequency so that speed is faster.
Further, the above-mentioned whole program information table generating whole network on front-end server specifically include following steps: obtain network information table at operator's dominant frequency point, then transmission system description in this form is analyzed, thus the whole effectively frequency point information obtained in network, search for each digital television program further according to these effective frequency point information frequencies one by one.Namely invalid frequency is first filtered when front end obtains listing.Make speed faster.
Further, above-mentioned DTV STB obtains the step of whole program information table particularly as follows: DTV STB starts program searching, and Set Top Box is tuned to operator's dominant frequency point, if operator's dominant frequency point can lock, then start to obtain the network information table of operator；If operator's dominant frequency point can not lock, then fast search terminates, and starts standard search.Compatible conventional is searched for.
Further, said method also includes when after the network information table success obtaining operator in above-mentioned steps, analyze and whether self-defined description of network information table has prior self-defining whole program information table describe son, if there are prior self-defining whole program information table to describe son, then analyze this and describe son, otherwise fast search terminates, and starts standard search.Leave in network information table as describing son, it is achieved easily.
Further, the 0xFE of network information table is customized for whole program information table.Whole program information table can be quickly found out according to 0xFE.
Further, said method also includes after Set Top Box has analyzed description, it is judged that whether legal describe sub-content, if legal, then extract whole programme information and stores whole programme information, if illegal, then fast search terminates, and starts standard search.Make result more accurate.
Further, above-mentioned whole program information table include describing sub-sign, the programm name of the programm name length of the program sum that describes in sub-length, carrier network, the symbol rate information of the FEC error correction information of the dominant frequency information of this program frequency point, this program, the modulation intelligence of this program frequency point, this program frequency point, this program ID, the video PID of this program, the video type of this program, the Audio PID number of this program, the Audio PID of this program, the audio types of this program, this program and this program.As long as comprising these information just can realize basic function, simplify table content.
Beneficial effects of the present invention: by generating whole program information table of whole network on front-end server and this table being put into operator's dominant frequency point, when DTV STB starts program searching, directly first it is tuned to dominant frequency point, obtain the whole program information table leaving operator's dominant frequency point in above-mentioned steps in, so that DTV STB is disposable quickly obtains whole programme informations of effective frequency in whole network.Compared to the prior art, its program searching time shortens dramatically, and is very easy to the use of user.
Accompanying drawing explanation
Fig. 1 is the method flow diagram of the digital television program fast search of the present invention.
Detailed description of the invention
The present invention is further illustrated below.
A kind of method that the invention discloses digital television program fast search, its method for fast searching specifically comprises the steps of the whole program information table generating whole network on front-end server, described whole program information table includes whole programme informations that effective frequency of whole network is corresponding with effective frequency, and whole program information table is put in operator's dominant frequency point；It is operator's dominant frequency point that tuner in DTV STB arranges search frequency, when starting program searching, DTV STB gets the whole program information table leaving operator's dominant frequency point in above-mentioned steps in, whole program information table, thus obtaining whole programme informations of effective frequency in whole network, are finally stored in DTV STB by DTV STB.By generating whole program information table of whole network on front-end server and this table being put into operator's dominant frequency point, when DTV STB starts program searching, directly first it is tuned to dominant frequency point, obtain the whole program information table leaving operator's dominant frequency point in above-mentioned steps in, so that DTV STB is disposable quickly obtains whole programme informations of effective frequency in whole network.Compared to the prior art, its program searching time shortens dramatically, and is very easy to the use of user.
Further, the above-mentioned whole program information table generating whole network on front-end server specifically include following steps: obtain network information table NIT at operator's dominant frequency point, then transmission system description in this form is analyzed, thus the whole effectively frequency point information obtained in network, then search for each digital television program according to these effective frequency point information frequencies one by one.Front-end server obtains network information table NIT form either directly through operator's dominant frequency point, obtains each digital television programs information again through the whole effectively frequency point information obtained in network, fast and effeciently obtain whole program information table of effectively frequency in network.
Further, the method flow diagram of the digital television program fast search of the present invention as shown in Figure 1, it concretely comprises the following steps: DTV STB starts program searching, and Set Top Box is tuned to operator's dominant frequency point, if operator's dominant frequency point can lock, then start to obtain the network information table NIT of operator；If operator's dominant frequency point can not lock, then fast search terminates, and starts standard search.Can quickly switching to standard search in embodiments of the invention in the unsuccessful situation of fast search, compatible existing television program search mode, simultaneity factor is also more stable.
Further, said method also includes when after the network information table NIT success obtaining operator, analyze and whether self-defined description of network information table NIT has prior self-defining whole program information table describe son, if there are prior self-defining whole program information table to describe son, then analyze this and describe son, otherwise fast search terminates, and starts standard search.Wherein analyze and describe son and namely judge content whether sub-content matches with the description of predefined.According to the self-defined regulation of En300468_e3 specification in this enforcement, the 0xFE in network information table NIT is customized for whole program information table.By whole program information table are sub as one of them description of network information table NIT, the method making the present embodiment more easily realizes, do not change any framework of system, use the self-defined function describing son in network information table NIT just can realize the function of the present invention.Describing sub-content and be inserted into operator's front end dominant frequency point NIT form, the Tagvalue describing son is defined as 0xFE, and is gone out by big network propagation.By describing the sign of son just can quickly judge whether to carry out fast search, still can carry out searching TV program by conventional digital TV way of search when cannot be carried out fast search simultaneously, being very easy to the use of user.
Further, said method also includes after Set Top Box has analyzed description, it is judged that whether legal describe sub-content, if legal, then extract whole programme information and stores whole programme information, if illegal, then fast search terminates, and starts standard search.Make the programme information got more accurate plus this judge process.In field of data transmission, inevitable that noise or error of transmission, carried out the judgement of data by the method, improve the accuracy of programme information.Different judgment rules can be set for various different information contenies, the video type of such as program is usually mpeg2/H264/AVS etc., in advance the video type of all of program can be preserved, if the video type of program is not belonging to preserve any one in data, then may determine that illegal.Other judgment rules set flexibly according to different information contenies, and those of ordinary skill in the art can complete, and does not repeat them here.
Standard search in the present embodiment can be the mode of two kinds of program searchings described in background technology, it is also possible to being the method for other conventional program searching in prior art, it is not belonging to the key content of the present invention, does not repeat them here.Employing said method makes the method for the fast search digital television program of the present invention can carry out compatibility with conventional method of the prior art well, still can carry out searching TV program by conventional digital TV way of search when cannot be carried out fast search, being very easy to the use of user.
In general, as long as whole program information table intactly comprises following all of information: describe son and indicate, according to the self-defined regulation of En300468_e3 specification in the present invention, be defined as 0xFE, naturally it is also possible to carry out other definition as required；Sub-length is described；Program sum in carrier network；The dominant frequency information of this program frequency point, its unit is Khz；The FEC error correction information of this program, (0000 represents notdefined；0001 represents noouterFECcoding；0010 represents RS (204/188)；0011to1111 represents reservedforfutureuse, it is also possible to carry out other setting)；The modulation intelligence of this program frequency point (0x00notdefined, 0x0116QAM, 0x0232QAM, 0x0364QAM, 0x04128QAM, 0x05256QAM etc. can also carry out other setting)；The symbol rate information (unit is Msymbol/s) of this program frequency point；This program ID；The video PID of this program；The video type (such as mpeg2/H264/AVS etc.) of this program；The Audio PID number of this program；The Audio PID of this program；The audio types (such as mpeg2, AC3, DTS etc.) of this program；The programm name length of this program；The programm name of this program.As long as comprising information above just can complete follow-up normal program viewing.Certainly, the content of above-mentioned information can also be extended as required.Certainly, the content of whole programme information table definitions can increase on above basis.This those skilled in the art can set flexibly according to different needs, does not repeat them here.
Here already by specific embodiment, invention has been described in detail, thering is provided the description of above-described embodiment in order to make those skilled in the art manufacture or use the present invention, the various amendments of these embodiments will be appreciated that for a person skilled in the art.The present invention is not limited to these examples or some aspect therein.The scope of the present invention is described in detail by appended claims.
Described above illustrate and describes a preferred embodiment of the present invention, but as previously mentioned, it is to be understood that the present invention is not limited to form disclosed herein, it is not to be taken as the eliminating to other embodiments, and can be used for other combinations various, amendment and environment, and in invention contemplated scope described herein, can be modified by the technology of above-mentioned instruction or association area or knowledge.And the change that those skilled in the art carry out and change are without departing from the spirit and scope of the present invention, then all should in the protection domain of claims of the present invention.
Claims (8)
1. the method for a digital television program fast search, its method for fast searching specifically comprises the steps of the whole program information table generating whole network on front-end server, described whole program information table includes whole programme informations of whole network, and whole program information table is put in operator's dominant frequency point；It is operator's dominant frequency point that tuner in DTV STB arranges search frequency, when starting program searching, DTV STB gets the whole program information table leaving operator's dominant frequency point in above-mentioned steps in, whole program information table, thus whole programme informations of obtaining in whole network, are finally stored in DTV STB by DTV STB；Whole program information table are sub as one of them description of network information table NIT, described method also includes when after the network information table success obtaining operator in above-mentioned steps, analyze and whether self-defined description of network information table has prior self-defining whole program information table describe son, if there are prior self-defining whole program information table to describe son, then analyzing this and describe son, otherwise fast search terminates.
2. the method for digital television program fast search as claimed in claim 1, it is characterised in that described whole program information table are whole program information table of effective frequency in whole network.
3. the method for digital television program fast search as claimed in claim 2, it is characterized in that the described whole program information table generating whole network on front-end server specifically include following steps: obtain network information table at operator's dominant frequency point, then transmission system description in this form is analyzed, thus the whole effectively frequency point information obtained in network, search for each digital television program further according to these effective frequency point information frequencies one by one.
4. the method for digital television program fast search as claimed in claim 2, it is characterized in that described DTV STB obtains the step of whole program information table particularly as follows: DTV STB starts program searching, and Set Top Box is tuned to operator's dominant frequency point, if operator's dominant frequency point can lock, then start to obtain the network information table of operator；If operator's dominant frequency point can not lock, then fast search terminates, and starts standard search.
5. the method for digital television program fast search as claimed in claim 4, it is characterised in that described method also includes when fast search terminates, and starts standard search.
6. the method for digital television program fast search as claimed in claim 5, it is characterised in that the 0xFE of network information table is customized for whole program information table.
7. the method for digital television program fast search as claimed in claim 6, it is characterized in that described method also includes after Set Top Box has analyzed description, whether legal judge to describe sub-content, if it is legal, then extract whole programme information and store whole programme information, if illegal, then fast search terminates, and starts standard search.
8. the method for digital television program fast search as claimed in claim 7, it is characterized in that described whole program information table includes describing sub-sign, sub-length is described, program sum in carrier network, the dominant frequency information of this program frequency point, the FEC error correction information of this program, the modulation intelligence of this program frequency point, the symbol rate information of this program frequency point, this program ID, the video PID of this program, the video type of this program, the Audio PID number of this program, the Audio PID of this program, the audio types of this program, the programm name length of this program and the programm name of this program.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103596039A (en) * | 2013-11-05 | 2014-02-19 | 四川九州电子科技股份有限公司 | Rapid and automatic program searching method for digital set top box |
| CN104486676A (en) * | 2014-12-26 | 2015-04-01 | 珠海迈越信息技术有限公司 | Data sharing method and system |
| CN105025346B (en) * | 2015-07-20 | 2018-12-07 | 深圳Tcl数字技术有限公司 | The acquisition methods and system of digital television program parameter |
| CN105025352A (en) * | 2015-07-21 | 2015-11-04 | 深圳市茁壮网络股份有限公司 | Digital television channel data packaging method and rapid searching method |
| CN107707973A (en) * | 2016-08-19 | 2018-02-16 | 四川长虹网络科技有限责任公司 | A kind of method of fast search digital television program |
| CN108513164B (en) * | 2018-02-06 | 2022-04-26 | 海信视像科技股份有限公司 | Program searching method and device |
| 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 |
| CN112738615A (en) * | 2020-12-25 | 2021-04-30 | 深圳市九洲电器有限公司 | Program acquisition method and device, set top box and front-end server |
| CN113556586B (en) * | 2021-07-19 | 2023-03-24 | 杭州国芯科技股份有限公司 | Set-top box program information extension updating method |
| CN113596541A (en) * | 2021-07-30 | 2021-11-02 | 深圳市杰科数码有限公司 | Set top box, user operation-free installation method thereof and computer readable storage medium |
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