CN103269441A - Method for searching digital television programmes fast - Google Patents
Method for searching digital television programmes fast Download PDFInfo
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- CN103269441A CN103269441A CN2013102076180A CN201310207618A CN103269441A CN 103269441 A CN103269441 A CN 103269441A CN 2013102076180 A CN2013102076180 A CN 2013102076180A CN 201310207618 A CN201310207618 A CN 201310207618A CN 103269441 A CN103269441 A CN 103269441A
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Abstract
The invention relates to the field of digital televisions, and discloses a method for searching digital television programmes fast. The method for searching the digital television programmes fast comprises the following steps that the table of the information of all the programmes of a whole network is generated on a front-end server, the table of the information of all the programmes comprises all the programme information of the whole network, and all the programme information is placed in a basic frequency point of an operator; a search frequency point is set as the basic frequency point of the operator through a tuning unit in a digital television set-top box; when progamme search is started, the digital television set-top box acquires the table of all the programme information stored in the basic frequency point of the operator in the last step, and therefore the digital television set-top box obtains all the programme information of the whole network, and finally the table of all the programme information is stored in the digital television set-top box. The set-top box is made to acquire the programme information of the whole network fast.
Description
Technical field
The present invention relates to the digital television field, relate in particular to a kind of digital television program method of search fast.
Background technology
Along with popularizing of Digital Television, increasing family has enjoyed the benefit that Digital Television is brought.But digital TV set-top box is before using, must be first by program searching to obtain the TV programme that front end operator provides.Be example with present wired operator, each operator generally provides a plurality of frequencies, the digital TV programme of multiplexing many covers again under each frequency.Therefore, finish whole program searchings need decide on factors such as transmission blanking times of carrier network frequency quantity, PAT/PMT/SDT form.
Carry out program searching in the prior art and can relate to Program Association Table (PAT, Program Association Table), Program Map Table (PMT, Program Map Table), professional statement table (SDT, Service Description Table), network information table (NIT, Network information Table) etc. form.Wherein PAT provides the position of corresponding Program Map Table (PMT), i.e. the value of the Packet Identifier (PID, Packet Identifier) of TS bag also provides the position of network information table (NIT) simultaneously.In the prior art, finish the following dual mode of the general employing of program searching of digital TV set-top box.
The first, carry out the frequency search one by one by the frequency sweep mode.Search is set begins and finishes frequency (generally be lowest frequency and high frequency to start with or finish frequency), search for from the beginning frequency then.In case find certain frequency lockable, obtain program Service_ID and PMT_PID under this frequency by obtaining the pat table lattice again, and then obtain the audio frequency and video pid information of program by the pmt table lattice, get access to the programm name information of program at last by the SDT form.After finishing the program searching of this frequency, continue the program searching of next frequency again, finish frequency until arriving.Such mode set-top box will be searched for each frequency one by one, obtains the programme information of each frequency more one by one, needs the long time.
The second, effective frequency is carried out program searching.At first obtain network information table NIT by operator's dominant frequency point, analyze transmission system descriptor Delivery System Descriptors in this form then, obtain the whole effectively frequency point information in the network, then according to the frequency search one by one of these effective frequency point information.This mode is compared with above-mentioned first kind, has saved consuming time on invalid frequency, is the way of search of main flow digital television program at present.Yet, such mode is still more consuming time, this is because stride frequency (because certainly existing a plurality of effective frequencies) more consuming time when searching on the one hand, on the one hand set-top box will be obtained each TV programme and still need carry out just finishing at 3 forms in addition, after all needing to visit, three forms of PAT, PMT and SDT could obtain the complete information of a program, and under a lot of situations, the program of Digital Television has up to a hundred, and such search speed undoubtedly can not satisfy user's needs.
Thereby above dual mode all can not realize carrying out fast the program searching of Digital Television, can't satisfy user's needs.
Summary of the invention
The objective of the invention is to exist at digital TV program searching method of the prior art consuming time long, can't satisfy the technical problem of user's needs, a kind of digital television program method of search fast is provided.
Purpose of the present invention realizes by following technical proposals:
A kind of digital television program is the method for search fast, its method for fast searching specifically comprises following steps: the whole program information table that generate whole network at front-end server, the whole programme informations that comprise whole network in described whole program information table, and whole program information table are put into operator's dominant frequency point; It is operator's dominant frequency point that tuner in the digital TV set-top box arranges the search frequency, during the beginning program searching, digital TV set-top box gets access to the whole program information table that leave operator's dominant frequency point in the above-mentioned steps in, thereby digital TV set-top box obtains the whole programme informations in the whole network, at last whole program information table is stored in the digital TV set-top box.Make set-top box can obtain whole programme informations fast.
Further, above-mentioned whole program information table is whole program information table of effective frequency in the whole network.Filter out invalid frequency, make speed faster.
Further, above-mentioned whole program information table at the whole network of front-end server generation specifically may further comprise the steps: the dominant frequency point obtains network information table in operator, analyze the transmission system descriptor in this form then, thereby obtain the whole effective frequency point information in the network, again according to these effective frequency point information one by one frequency search for each digital television program.When obtaining listing, namely filters front end invalid frequency earlier.Make speed faster.
Further, the step that above-mentioned digital TV set-top box is obtained whole program information table is specially: digital TV set-top box starts program searching, and set-top box is tuned to operator's dominant frequency point, if operator's dominant frequency point can lock, then begin to obtain the network information table of operator; If operator's dominant frequency point can not lock, then search finishes fast, starts standard search.The compatible conventional search.
Further, said method also comprises after the network information table success of obtaining operator in the above-mentioned steps, whether self-defining whole program information table descriptors are in advance arranged in the self-defined descriptor of phase-split network information table, if there are self-defining whole program information table descriptors in advance, then analyze this descriptor, otherwise search finishes fast, starts standard search.Leave in the network information table as descriptor, realize easily.
Further, the 0xFE with network information table is customized for whole program information table.Can find whole program information table fast according to 0xFE.
Further, said method also comprises behind the intact descriptor of set-top box analysis judge whether the descriptor content is legal, if legal, then extract whole programme informations and stores whole programme informations, if illegal, then search finishes fast, the startup standard search.Make the result more accurate.
Further, comprise the program sum in descriptor sign, descriptor length, the 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, symbol rate information, this program ID, the video PID of this program, the video type of this program, the audio frequency PID number of this program, the audio frequency PID of this program, the audio types of this program, the programm name length of this program and the programm name of this program of this program frequency point in above-mentioned whole program information table.Just can realize basic functions as long as comprise these information, simplify table content.
Beneficial effect of the present invention: by generating whole program information table of whole network at front-end server and this table being put into operator's dominant frequency point, when digital TV set-top box begins program searching, directly be tuned to the dominant frequency point earlier, obtain the whole program information table that leave operator's dominant frequency point in the above-mentioned steps in, thereby make the disposable whole programme informations that obtain effective frequency in the whole network fast of digital TV set-top box.Compare with prior art, its program searching time shortens dramatically, and is very easy to user's use.
Description of drawings
Fig. 1 is the digital television program of the present invention method flow diagram of search fast.
Embodiment
Below the present invention is further illustrated.
The invention discloses a kind of digital television program method of search fast, its method for fast searching specifically comprises following steps: the whole program information table that generate whole network at front-end server, comprise effective frequency of whole network and whole programme informations of effective frequency correspondence in described whole program information table, and whole program information table are put into operator's dominant frequency point; It is operator's dominant frequency point that tuner in the digital TV set-top box arranges the search frequency, during the beginning program searching, digital TV set-top box gets access to the whole program information table that leave operator's dominant frequency point in the above-mentioned steps in, thereby digital TV set-top box obtains whole programme informations of effective frequency in the whole network, at last whole program information table is stored in the digital TV set-top box.By generating whole program information table of whole network at front-end server and this table being put into operator's dominant frequency point, when digital TV set-top box begins program searching, directly be tuned to the dominant frequency point earlier, obtain the whole program information table that leave operator's dominant frequency point in the above-mentioned steps in, thereby make the disposable whole programme informations that obtain effective frequency in the whole network fast of digital TV set-top box.Compare with prior art, its program searching time shortens dramatically, and is very easy to user's use.
Further, above-mentioned whole program information table at the whole network of front-end server generation specifically may further comprise the steps: the dominant frequency point obtains network information table NIT in operator, analyze the transmission system descriptor in this form then, thereby obtain the whole effective frequency point information in the network, then according to these effective frequency point information one by one frequency search for each digital television program.On front-end server, directly obtain network information table NIT form by operator's dominant frequency point, obtain each digital television programs information by whole effectively frequency point information of obtaining in the network again, fast and effeciently obtain whole program information table of effective frequency in the network.
Further, digital television program of the present invention as shown in Figure 1 is the method flow diagram of search fast, its concrete steps are: digital TV set-top box starts program searching, and set-top box is tuned to operator's dominant frequency point, if operator's dominant frequency point can lock, then begin to obtain the network information table NIT of operator; If operator's dominant frequency point can not lock, then search finishes fast, starts standard search.Can switch to standard search very soon under the unsuccessful situation of search fast in the embodiments of the invention, compatible existing television program search mode, simultaneity factor is also more stable.
Further, said method also comprises after the network information table NIT success of obtaining operator, whether self-defining whole program information table descriptors are in advance arranged in the self-defined descriptor of phase-split network information table NIT, if there are self-defining whole program information table descriptors in advance, then analyze this descriptor, otherwise search finishes fast, starts standard search.Wherein analyze descriptor and judge that namely whether content is complementary with the descriptor content of predefined.According to the self-defined regulation of En300468_e3 standard, the 0xFE among the network information table NIT is customized for whole program information table in this enforcement.By with whole program information table one of them descriptor as network information table NIT, make the method for present embodiment be easy to more realize, do not change any framework of system, use the function of the self-defined descriptor among the network information table NIT just can realize function of the present invention.The descriptor content is inserted into the front end dominant frequency point NIT of operator form, and the Tag value of descriptor is defined as 0xFE, and goes out by big network propagation.Just can judge fast by the sign of descriptor and whether can search for fast, under situation about can't search for fast, still can come searching TV program with the conventional digital TV way of search simultaneously, be very easy to user's use.
Further, said method also comprises behind the intact descriptor of set-top box analysis judge whether the descriptor content is legal, if legal, then extract whole programme informations and stores whole programme informations, if illegal, then search finishes fast, the startup standard search.Add that this deterministic process makes that the programme information that gets access to is more accurate.In field of data transmission, have noise or error of transmission inevitably, carry out the judgement of data by the method, improved the accuracy of programme information.Can set different judgment rules at the various information content, video type such as program generally is mpeg2/H264/AVS etc., can in advance the video type of all programs be preserved, if the video type of program does not belong to any one of preserving in the data, then can judge illegal.Other judgment rules are set flexibly according to the different information contents, and those of ordinary skill in the art can finish, and does not repeat them here.
Standard search in the present embodiment can be the mode of two kinds of program searchings describing in the background technology, also can be the method for the program searching of other routine in the prior art, and it does not belong to key content of the present invention, does not repeat them here.Adopt said method to make the method for quick search digital television program of the present invention to carry out compatibility with conventional method of the prior art well, under situation about can't search for fast, still can come searching TV program with the conventional digital TV way of search, be very easy to user's use.
In general, all program information table is as long as intactly comprise following all information: the descriptor sign, according to the self-defined regulation of En300468_e3 standard, it is defined as 0xFE among the present invention, and can certainly carry out other definition as required; Descriptor length; Program sum in the carrier network; The dominant frequency information of this program frequency point, its unit is Khz; The FEC error correction information of this program, (0000 expression not defined; 0001 expression no outer FEC coding; 0010 expression RS (204/188); 0011 to, 1111 expression reserved for future use also can carry out other setting); The modulation intelligence of this program frequency point (0x00 not defined, 0,x01 16 QAM, 0,x02 32 QAM, 0,x03 64 QAM, 0,x04 128 QAM, 0,x05 256 QAM etc. also can carry out other setting); The symbol rate information of this program frequency point (unit is Msymbol/s); This program ID; The video PID of this program; The video type of this program (such as such as mpeg2/H264/AVS etc.); The audio frequency PID number of this program; The audio frequency PID of this program; The audio types of this program (such as mpeg2, AC3, DTS etc.); The programm name length of this program; The programm name of this program.Just can finish follow-up normal program viewing as long as comprise above information.Certainly, the content of above-mentioned information can also be expanded as required.Certainly, all the content of programme information table definition can increase on above basis.This those skilled in the art can set flexibly according to different needs, does not repeat them here.
Here by specific embodiment invention is described in detail, provide the description of above-described embodiment to make or use the present invention, the various modifications of these embodiment to understand easily in order to make those skilled in the art.The present invention is not limited to these examples, or some aspect wherein.Scope of the present invention is elaborated by additional claim.
Above-mentioned explanation illustrates and has described a preferred embodiment of the present invention, but as previously mentioned, be to be understood that the present invention is not limited to the disclosed form of this paper, should not regard the eliminating to other embodiment as, and can be used for various other combinations, modification and environment, and can in invention contemplated scope described herein, change by technology or the knowledge of above-mentioned instruction or association area.And the change that those skilled in the art carry out and variation do not break away from the spirit and scope of the present invention, then all should be in the protection range of claims of the present invention.
Claims (8)
1. the digital television program method of search fast, its method for fast searching specifically comprises following steps: the whole program information table that generate whole network at front-end server, the whole programme informations that comprise whole network in described whole program information table, and whole program information table are put into operator's dominant frequency point; It is operator's dominant frequency point that tuner in the digital TV set-top box arranges the search frequency, during the beginning program searching, digital TV set-top box gets access to the whole program information table that leave operator's dominant frequency point in the above-mentioned steps in, thereby digital TV set-top box obtains the whole programme informations in the whole network, at last whole program information table is stored in the digital TV set-top box.
2. the method for the quick search of digital television program as claimed in claim 1 is characterized in that described whole program information table is whole program information table of effective frequency in the whole network.
3. the quick method of search of digital television program as claimed in claim 2, it is characterized in that described whole program information table at the whole network of front-end server generation specifically may further comprise the steps: the dominant frequency point obtains network information table in operator, analyze the transmission system descriptor in this form then, thereby obtain the whole effective frequency point information in the network, again according to these effective frequency point information one by one frequency search for each digital television program.
4. the quick method of search of digital television program as claimed in claim 2, it is characterized in that described digital TV set-top box obtains the step of whole program information table and be specially: digital TV set-top box starts program searching, and set-top box is tuned to operator's dominant frequency point, if operator's dominant frequency point can lock, then begin to obtain the network information table of operator; If operator's dominant frequency point can not lock, then search finishes fast, starts standard search.
5. the quick method of search of digital television program as claimed in claim 4, it is characterized in that described method also comprises after the network information table success of obtaining operator in the above-mentioned steps, whether self-defining whole program information table descriptors are in advance arranged in the self-defined descriptor of phase-split network information table, if there are self-defining whole program information table descriptors in advance, then analyze this descriptor, otherwise search finishes fast, starts standard search.
6. the method for the quick search of digital television program as claimed in claim 5 is characterized in that the 0xFE of network information table is customized for whole program information table.
7. the quick method of search of digital television program as claimed in claim 6, it is characterized in that described method also comprises behind the intact descriptor of set-top box analysis, judge whether the descriptor content is legal, if it is legal, then extract whole programme informations and store whole programme informations, if illegal, then search finishes fast, starts standard search.
8. the method for the quick search of digital television program as claimed in claim 7 is characterized in that comprising in described whole program information table that descriptor indicates, descriptor length, program sum in the 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 frequency PID number of this program, the audio frequency 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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| 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 |
| CN105025346A (en) * | 2015-07-20 | 2015-11-04 | 深圳Tcl数字技术有限公司 | Digital television program parameter obtaining method and system |
| 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 |
| 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 |
| CN108513164A (en) * | 2018-02-06 | 2018-09-07 | 青岛海信电器股份有限公司 | A kind of program searching method and device |
| 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 |
| CN113556586A (en) * | 2021-07-19 | 2021-10-26 | 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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| 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 |
| CN113556586A (en) * | 2021-07-19 | 2021-10-26 | 杭州国芯科技股份有限公司 | Set-top box program information extension updating method |
| 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 |
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