CN104053056A - Television program searching method and system of digital television set-top box - Google Patents
Television program searching method and system of digital television set-top box Download PDFInfo
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Abstract
The invention discloses a television program searching method and system of a digital television set-top box. According to the method, firstly, the digital television set-top box is powered up and started up, a front-end table. broadcasting server broadcasts network information sheets at all digital television broadcasting frequency points, a front-end television program configuration file broadcasting server broadcasts television program configuration files at a designated frequency point and then monitors whether the version number of the network information sheet of the current frequency point is changed or not, if yes, the network information sheet broadcast by the front-end table broadcasting server is received, and the television program configuration files broadcast by the front-end television program configuration file broadcasting server are received; if not, monitoring is conducted continuously; finally, the digital television set-top box updates television program information of a television program playing list of the digital television set-top box according to the received television program configuration files. The method and system optimize the television program searching process of the digital television set-top box and effectively improve the searching efficiency of the set-top box.
Description
Technical field
The present invention relates to the technical field of digital television set-top in Digital Television, be specifically related to a kind of method and system of digital TV set-top box searching TV program.
Background technology
Digital TV set-top box is a kind of conversion equipment that digital television signal is converted to analog signal, and its image through digitalization compressed and voice signal decoding are reduced into general television set and can play the signal of demonstration.Current digital TV set-top box has become a kind of embedded computing equipment, there is perfect real time operating system, and powerful CPU computing capability is provided, be used for coordinating controller top box each several part software and hardware facility, and the multiple new functions such as the Internet are provided.
At present, the common method of digital TV set-top box searching TV program is generally:
Adopt Digital Television DVB (Digital Video Broadcasting, digital video broadcasting) standard search TV programme flow process, first Set Top Box is by NIT form (Network Information Table, network information table) obtain the information such as all frequencies of digital television broadcasting, then, Set Top Box starts PAT (the Program Association Table by broadcasting in this frequency from first frequency, Program Association Table), PMT (Program Map Table, Program Map Table), SDT (program SDT Service Description Table, Service Description Table) etc. form obtain the TV program information of broadcasting in this frequency, complete after the television program search of first frequency, Set Top Box continues the TV programme of second frequency of search, complete after the television program search of second frequency, Set Top Box continues the TV programme of the 3rd frequency of search, search for one by one the TV program information of all frequencies.After TV programme in all frequencies is all searched for, Set Top Box is upgraded TV program list according to Search Results, TV reception.
Adopt the advantage of said method searching TV program to be: meet DVB standard search TV programme flow process, the TV programme that each frequency is broadcast roving commission one by one, step is simple, clear logic.Shortcoming is:
1, search procedure needs the form such as PAT, PMT, the SDT cooperation that NIT and each frequency are broadcast just can complete search, and the form that search procedure relates to is more, and form layoutprocedure is comparatively loaded down with trivial details;
2, search procedure needs frequency one by one to carry out successively, and each frequency needs to carry out the forms such as frequency modulation, frequency locking, reception PAT, PMT, SDT, resolves the operations such as form data, and the search procedure time cycle is longer.
Summary of the invention
For the defect existing in prior art, the object of the present invention is to provide a kind of method and system of digital TV set-top box searching TV program, realize the optimization of television program search process, improve the efficiency of digital TV set-top box searching TV program.
For achieving the above object, the technical solution used in the present invention is as follows:
A method for digital TV set-top box searching TV program, comprises the following steps:
(1) digital TV set-top box powers up start, completes initial work;
(2) front end form is broadcast server at all digital television broadcasting frequency Transmission Network information table NIT; Described network information table comprises self-defined connection descriptor, and custom link descriptor is broadcast frequency and identification of data packets symbol PID for what describe TV programme configuration file place;
(3) front end TV programme configuration file is broadcast server and is broadcast TV programme configuration file at appointment frequency; Described appointment frequency refers to the frequency of broadcasting at the TV programme configuration file place described in custom link descriptor;
(4) whether the version number of monitoring the network information table NIT of current frequency changes, if enter next step, continues if not to monitor; Described current frequency refers to the working frequency points that digital TV set-top box is current;
(5) digital TV set-top box receiving front-end form is broadcast the network information table NIT that server broadcasts, and broadcasts frequency and identification of data packets symbol PID receiving front-end TV programme configuration file is broadcast the TV programme configuration file that server is broadcast according to described;
(6) digital TV set-top box is upgraded the TV program information of its TV programme playlist according to the TV programme configuration file receiving, according to the TV program information TV reception after upgrading.
Further, the method of a kind of digital TV set-top box searching TV program as above, in step (5), if digital TV set-top box does not receive front end TV programme configuration file and broadcasts the TV programme configuration file that server is broadcast, digital TV set-top box enters step (6) search for the TV programme configuration file of each digital television broadcasting frequency according to Digital Television DVB standard search program flow process after.
Further, the method for a kind of digital TV set-top box searching TV program as above, in step (3), described TV programme configuration file is XML file, for recording television programs information; Described TV program information comprises that television program type, title, video flowing type of coding, audio stream type of coding, video broadcast that identity code transmission package, audio frequency are broadcast identity code transmission package, TV programme is broadcast frequency point information, TS_ID, Service_ID and CA information.
Further, the method for a kind of digital TV set-top box searching TV program as above, in step (3), front end TV programme configuration file is broadcast server and is being specified frequency to broadcast TV programme configuration file in data carousel mode.
Further again, the method for a kind of digital TV set-top box searching TV program as above, in step (4), monitor the concrete the mode whether version number of the network information table NIT of current frequency change and be:
Record the current version number of the network information table NIT of current frequency, and the version number that this current version number and front end form are broadcast the network information table NIT that server broadcasts is compared, change if both differences illustrate the version number of network information table NIT.
Further, the method of a kind of digital TV set-top box searching TV program as above, in step (5), when digital TV set-top box receiving front-end form is broadcast the network information table NIT of server broadcast, record the version number of the network information table NIT receiving, and the current version number of described network information table NIT is updated to the version number of the network information table NIT receiving.
A system for digital TV set-top box searching TV program, comprising:
Set Top Box initialization module, powers up start for digital TV set-top box, completes initial work;
Network information table is broadcast module, for being broadcast server by front end form at all digital television broadcasting frequency Transmission Network information table NIT; Described network information table comprises self-defined connection descriptor, and custom link descriptor is broadcast frequency and identification of data packets symbol PID for what describe TV programme configuration file place;
TV programme configuration file is broadcast module, is specifying frequency to broadcast TV programme configuration file for broadcast server by front end TV programme configuration file; Described appointment frequency refers to the frequency of broadcasting at the TV programme configuration file place described in custom link descriptor;
Whether network information table is monitored module, change for the version number of the network information table NIT that monitors current frequency, if enter TV programme configuration file receiver module, continues if not to monitor; Described current frequency refers to the working frequency points that digital TV set-top box is current;
TV programme configuration file receiver module, broadcast for digital TV set-top box receiving front-end form the network information table NIT that server broadcasts, and broadcast frequency and identification of data packets symbol PID receiving front-end TV programme configuration file is broadcast the TV programme configuration file that server is broadcast according to described;
Digital TV Receiving decoding display module, the TV programme configuration file receiving for digital TV set-top box basis upgrades the TV program information of its TV programme playlist, according to the TV program information TV reception after upgrading.
Further, the system of a kind of digital TV set-top box searching TV program as above, in the time that digital TV set-top box does not receive front end TV programme configuration file and broadcasts the TV programme configuration file that server broadcasts, this system also comprises:
TV programme configuration file search module, searches for the TV programme configuration file of each digital television broadcasting frequency according to Digital Television DVB standard search program flow process for digital TV set-top box, enter Digital TV Receiving decoding display module after having searched for.
Beneficial effect of the present invention is: method and system of the present invention, realized digital TV set-top box in the time of searching TV program without receive various form, without one by one each digital television broadcasting frequency searching television program information and specify a frequency complete obtaining of all TV program information, the method has been simplified television program search process greatly, shorten cycle search time of TV programme, improved the efficiency of television program search.
Brief description of the drawings
Fig. 1 is the structured flowchart of a kind of system of digital TV set-top box searching TV program in the specific embodiment of the invention;
Fig. 2 is the flow chart of a kind of method of digital TV set-top box searching TV program in the specific embodiment of the invention.
Embodiment
Below in conjunction with Figure of description and embodiment, the present invention is described in further detail.
Fig. 1 shows the structured flowchart of a kind of system of digital TV set-top box searching TV program in the specific embodiment of the invention, this system mainly comprises that Set Top Box initialization module 11, network information table are broadcast module 12, TV programme configuration file is broadcast module 13, network information table monitoring module 14, TV programme configuration file receiver module 15 and Digital TV Receiving decoding display module 16, wherein:
Set Top Box initialization module 11 powers up start for digital TV set-top box, completes initial work;
Network information table is broadcast module 12 for being broadcast server by front end form at all digital television broadcasting frequency Transmission Network information table NIT; Described network information table comprises self-defined connection descriptor, and custom link descriptor is broadcast frequency and identification of data packets symbol PID for what describe TV programme configuration file place;
TV programme configuration file is broadcast module 13 and is being specified frequency to broadcast TV programme configuration file for broadcast server by front end TV programme configuration file; Described appointment frequency refers to the frequency of broadcasting at the TV programme configuration file place described in custom link descriptor;
Whether network information table is monitored module 14 and is changed for the version number of the network information table NIT that monitors current frequency, if enter TV programme configuration file receiver module, continues if not to monitor; Described current frequency refers to the working frequency points that digital TV set-top box is current;
TV programme configuration file receiver module 15 broadcasts for digital TV set-top box receiving front-end form the network information table NIT that server broadcasts, and broadcasts frequency and identification of data packets symbol PID receiving front-end TV programme configuration file is broadcast the TV programme configuration file that server is broadcast according to described;
Digital TV Receiving decoding display module 16 upgrades the TV program information of its TV programme playlist according to the TV programme configuration file receiving for digital TV set-top box, according to the TV program information TV reception after upgrading.
In addition, in the time that digital TV set-top box does not receive front end TV programme configuration file and broadcasts the TV programme configuration file that server broadcasts, this system also comprises a TV programme configuration file search module, this module is searched for the TV programme configuration file of each digital television broadcasting frequency according to Digital Television DVB standard search program flow process for digital TV set-top box, enter Digital TV Receiving decoding display module after having searched for.
Fig. 2 shows the flow chart of the method for a kind of digital TV set-top box searching TV program based on system shown in Fig. 1 in this embodiment, and the method comprises the following steps:
Step S21: digital TV set-top box powers up start, completes initial work;
First, digital TV set-top box powers up start, completes initial work, and when digital TV set-top box is added some points start, each functional module of its inside can complete above-mentioned initial work automatically.Initial work in present embodiment mainly comprises the initial work of network information table monitoring module 14, TV programme configuration file receiver module 15 and Digital TV Receiving decoding display module 16 etc.
Step S22: front end form is broadcast server at all digital television broadcasting frequency Transmission Network information tables;
Network information table is NIT table, and NIT table (or NIT form) is the form of describing the network information in DVB standard, and the details that digital TV network is relevant all can have description in NIT table.NIT table in present embodiment comprises self-defined connection descriptor Linkage descriptor and other canonical parameter (other standards parameter refers to the other standards parameter defining in DVB standard criterion), wherein, custom link descriptor Linkage descriptor broadcasts frequency and identification of data packets symbol PID (each broadcast data transmitting at digital TV network can distribute use a PID) for what describe TV programme configuration file place.
Step S23: front end TV programme configuration file is broadcast server and specified frequency to broadcast TV programme configuration file;
In present embodiment, front end TV programme configuration file is broadcast server and is broadcast TV programme configuration file in data carousel (DC) mode at appointment frequency.Wherein, described appointment frequency refers to the frequency of broadcasting at the TV programme configuration file place described in custom link descriptor in step S22.
TV programme configuration file is XML file, for recording television programs information; Described TV program information comprises that television program type, title, video flowing type of coding, audio stream type of coding, video broadcast that identity code transmission package, audio frequency are broadcast identity code transmission package, TV programme is broadcast frequency point information, TS_ID (transport stream distinguished symbol), Service_ID (service identifier number) and CA (Conditional Access) information etc.
Step S24: whether the NIT table of monitoring specified node changes;
Whether the version number that network information table monitoring module 14 is monitored the network information table NIT of current frequency changes, if enter step S25, continues if not to monitor, and wherein, described current frequency refers to the working frequency points that digital TV set-top box is current.In present embodiment, monitoring the concrete the mode whether version number of the network information table NIT of current frequency change is:
Record the current version number of the network information table NIT of current frequency, and the version number that this current version number and front end form are broadcast the network information table NIT that server broadcasts is compared, change if both differences illustrate the version number of network information table NIT.
When digital TV set-top box receiving front-end form is broadcast the network information table NIT of server broadcast, record the version number of the network information table NIT receiving, and the current version number of described network information table NIT is updated to the version number of the network information table NIT receiving.
Step S25: receiving front-end form is broadcast network information table and the TV programme configuration file that server broadcasts;
In the time listening to the version number of network information table NIT and change, digital TV set-top box receiving front-end form broadcast server broadcast network information table NIT, and according in network information table, describe broadcast frequency and identification of data packets symbol PID receiving front-end TV programme configuration file is broadcast the TV programme configuration file that server is broadcast.
Step S26: digital TV set-top box is upgraded the TV program information of its TV programme playlist according to the Digital Television configuration file receiving, according to the each TV program information TV reception after upgrading.
If digital TV set-top box basis in step S25 broadcasts frequency and identification of data packets symbol PID normally gets TV programme configuration file; digital timing Set Top Box is according to the TV programme configuration file receiving; upgrade the TV program information in nucleus TV programme playlist; after renewal; digital TV decoding display module can be according to the TV program information TV reception after upgrading
If digital TV set-top box does not get digital television program configuration file in step S25, as as described in broadcast frequency of poor quality, front end TV programme configuration file broadcast server and stop causing Set Top Box cannot receive TV programme configuration file in the situations such as broadcasting, digital TV set-top box performs step S26 search for the TV programme configuration file of each digital television broadcasting frequency according to Digital Television DVB standard search program flow process after again.Concrete, Set Top Box is by Digital Television DVB standard search program flow process, by form frequency searching television program informations (TV programme configuration file) one by one such as NIT, PAT, PMT, SDT, after upgrading according to the TV program information searching afterwards, Set Top Box Digital TV Receiving decoding display module can be according to each TV program information TV reception.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if these amendments of the present invention and within modification belongs to the scope of the claims in the present invention and equivalent technology thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (8)
1. a method for digital TV set-top box searching TV program, comprises the following steps:
(1) digital TV set-top box powers up start, completes initial work;
(2) front end form is broadcast server at all digital television broadcasting frequency Transmission Network information table NIT; Described network information table comprises self-defined connection descriptor, and custom link descriptor is broadcast frequency and identification of data packets symbol PID for what describe TV programme configuration file place;
(3) front end TV programme configuration file is broadcast server and is broadcast TV programme configuration file at appointment frequency; Described appointment frequency refers to the frequency of broadcasting at the TV programme configuration file place described in custom link descriptor;
(4) whether the version number of monitoring the network information table NIT of current frequency changes, if enter next step, continues if not to monitor; Described current frequency refers to the working frequency points that digital TV set-top box is current;
(5) digital TV set-top box receiving front-end form is broadcast the network information table NIT that server broadcasts, and broadcasts frequency and identification of data packets symbol PID receiving front-end TV programme configuration file is broadcast the TV programme configuration file that server is broadcast according to described;
(6) digital TV set-top box is upgraded the TV program information of its TV programme playlist according to the TV programme configuration file receiving, according to the TV program information TV reception after upgrading.
2. the method for a kind of digital TV set-top box searching TV program as claimed in claim 1, it is characterized in that, in step (5), if digital TV set-top box does not receive front end TV programme configuration file and broadcasts the TV programme configuration file that server is broadcast, digital TV set-top box enters step (6) search for the TV programme configuration file of each digital television broadcasting frequency according to Digital Television DVB standard search program flow process after.
3. the method for a kind of digital TV set-top box searching TV program as claimed in claim 1 or 2, is characterized in that, in step (3), described TV programme configuration file is XML file, for recording television programs information; Described TV program information comprises that television program type, title, video flowing type of coding, audio stream type of coding, video broadcast that identity code transmission package, audio frequency are broadcast identity code transmission package, TV programme is broadcast frequency point information, TS_ID, Service_ID and CA information.
4. the method for a kind of digital TV set-top box searching TV program as claimed in claim 1, it is characterized in that, in step (3), front end TV programme configuration file is broadcast server and is being specified frequency to broadcast TV programme configuration file in data carousel mode.
5. the method for a kind of digital TV set-top box searching TV program as claimed in claim 1, is characterized in that, in step (4), monitors the concrete the mode whether version number of the network information table NIT of current frequency change and is:
Record the current version number of the network information table NIT of current frequency, and the version number that this current version number and front end form are broadcast the network information table NIT that server broadcasts is compared, change if both differences illustrate the version number of network information table NIT.
6. the method for a kind of digital TV set-top box searching TV program as claimed in claim 5, it is characterized in that, in step (5), when digital TV set-top box receiving front-end form is broadcast the network information table NIT of server broadcast, record the version number of the network information table NIT receiving, and the current version number of described network information table NIT is updated to the version number of the network information table NIT receiving.
7. a system for digital TV set-top box searching TV program, comprising:
Set Top Box initialization module, powers up start for digital TV set-top box, completes initial work;
Network information table is broadcast module, for being broadcast server by front end form at all digital television broadcasting frequency Transmission Network information table NIT; Described network information table comprises self-defined connection descriptor, and custom link descriptor is broadcast frequency and identification of data packets symbol PID for what describe TV programme configuration file place;
TV programme configuration file is broadcast module, is specifying frequency to broadcast TV programme configuration file for broadcast server by front end TV programme configuration file; Described appointment frequency refers to the frequency of broadcasting at the TV programme configuration file place described in custom link descriptor;
Whether network information table is monitored module, change for the version number of the network information table NIT that monitors current frequency, if enter TV programme configuration file receiver module, continues if not to monitor; Described current frequency refers to the working frequency points that digital TV set-top box is current;
TV programme configuration file receiver module, broadcast for digital TV set-top box receiving front-end form the network information table NIT that server broadcasts, and broadcast frequency and identification of data packets symbol PID receiving front-end TV programme configuration file is broadcast the TV programme configuration file that server is broadcast according to described;
Digital TV Receiving decoding display module, the TV programme configuration file receiving for digital TV set-top box basis upgrades the TV program information of its TV programme playlist, according to the TV program information TV reception after upgrading.
8. the system of a kind of digital TV set-top box searching TV program as claimed in claim 7, it is characterized in that, in the time that digital TV set-top box does not receive front end TV programme configuration file and broadcasts the TV programme configuration file that server broadcasts, this system also comprises:
TV programme configuration file search module, searches for the TV programme configuration file of each digital television broadcasting frequency according to Digital Television DVB standard search program flow process for digital TV set-top box, enter Digital TV Receiving decoding display module after having searched for.
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