CN105578217A - Electronic program guide establishment method and set top box - Google Patents
Electronic program guide establishment method and set top box Download PDFInfo
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- CN105578217A CN105578217A CN201510989736.0A CN201510989736A CN105578217A CN 105578217 A CN105578217 A CN 105578217A CN 201510989736 A CN201510989736 A CN 201510989736A CN 105578217 A CN105578217 A CN 105578217A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
- H04N21/26283—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists for associating distribution time parameters to content, e.g. to generate electronic program guide data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
- H04N21/26291—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists for providing content or additional data updates, e.g. updating software modules, stored at the client
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H04N21/4345—Extraction or processing of SI, e.g. extracting service information from an MPEG stream
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving MPEG packets from an IP network
- H04N21/4383—Accessing a communication channel
Abstract
The embodiment of the invention discloses an electronic program guide (EPG) establishment method and a set top box. The EPG establishment method comprises the steps: by a set top box, firstly directly extracting a network information table (NIT) from a transport stream (TS); analyzing the NIT, thereby obtaining a network name of a currently utilized network and a channel resource information table of the currently utilized network; finally establishing an EPG matching the network name and the channel resource information table. In the embodiment of the invention, when the set top box establishes the EPG, the following steps of directly extracting the NIT from the TS, analyzing the NIT to obtain the network name of the currently utilized network and the channel resource information table of the currently utilized network, and then establishing the EPG are performed rather than the steps of firstly obtaining a program association table (PAT), secondly analyzing the PAT to obtain a packet identification (PID) and obtaining the NIT through the PID; therefore, the time for establishing the EPG can be shortened.
Description
Technical field
The present invention relates to electronic technology field, particularly relate to a kind of electronic program guides method for building up and Set Top Box.
Background technology
Along with the develop rapidly of digital television techniques and the universal rapidly of Set Top Box, the electronic program guides (ElectronicProgramGuide, EPG) as a critical function of Set Top Box also becomes the main using function of user gradually.EPG is mainly used in providing the detailed programme information within 7 days (as the time that program broadcasts, the detailed content etc. of program) to user, and the programme information that therefore user can provide according to EPG chooses the content of TV program needing viewing.In actual applications, before the programme information provided according to EPG user chooses the content of TV program needing viewing, Set Top Box also needs to set up EPG.
At present, Set Top Box is when setting up EPG, mainly by receiving the Program Association Table (ProgramAssociationTable that satellite sends, PAT), and by resolving PAT to obtain transmitting identification code, then receive network information table (NetworkInformationTable, NIT) by transmission identification code, from NIT, obtain network information resource again, and set up EPG according to the network information resource got.Visible, set up complex operation in the process of EPG at present, thus it is longer to consume duration when causing setting up EPG.
Summary of the invention
Embodiments provide a kind of electronic program guides method for building up and Set Top Box, required duration when setting up EPG can be reduced.
First aspect, the embodiment of the invention discloses a kind of electronic program guides method for building up, comprising:
Network information table NIT is extracted from transport stream;
Resolve described NIT, to obtain the channel resource information table of current use network of network title and described current use network;
Set up the electronic program guide (EPG) mated with described network name and described channel resource information table.
In conjunction with the implementation of first aspect, in the first possible implementation of first aspect, can also following steps be performed:
Extract SDT Service Description Table SDT;
Resolve described SDT, to obtain Business Name and the service provider information of program in described transport stream;
Described Business Name and described service provider information are added into described EPG, to upgrade described EPG.
In conjunction with the implementation of first aspect or the first possible implementation of first aspect, in the implementation that the second of first aspect is possible, can also following steps be performed:
Extract Event Information Table EIT;
Resolve described EIT, to obtain the event information parameter comprised in described transport stream;
Described event information parameter is added into described EPG, to upgrade described EPG.
In conjunction with the implementation that the second of first aspect is possible, in the third possible implementation of first aspect, can also following steps be performed:
Receive the first channel switching instruction of user's input;
Respond described first channel switching instruction, whether the frequency detecting the frequency of current channel of the broadcasting channel corresponding with described first channel switching instruction is consistent;
If inconsistent, then obtain the viewing frequency of channel corresponding to described first channel switching instruction;
Whether detect described viewing frequency higher than predeterminated frequency threshold value;
If detect described viewing frequency higher than described predeterminated frequency threshold value, then obtain event information parameter corresponding to the frequency of the channel corresponding with described first channel switching instruction from described EIT;
Show the event information parameter that the frequency of described corresponding with described first channel switching instruction channel is corresponding.
In conjunction with the third possible implementation of first aspect, in the 4th kind of possible implementation of first aspect, can also following steps be performed:
If detect described viewing frequency lower than described predeterminated frequency threshold value, then start countdown mode;
When at the end of described countdown mode timing, detect whether receive the second channel switching instruction;
Do not receive described second channel switching instruction if detect, then obtain event information data corresponding to the frequency of the channel corresponding with described first channel switching instruction from described EIT;
Show the event information parameter that the frequency of described corresponding with described first channel switching instruction channel is corresponding.
Second aspect, the embodiment of the invention also discloses a kind of Set Top Box, comprising:
Extraction unit, for extracting network information table NIT from transport stream;
Resolution unit, for resolving described NIT, to obtain the channel resource information table of current use network of network title and described current use network;
Set up unit, for setting up the electronic program guide (EPG) mated with described network name and described channel resource information table.
In conjunction with the Set Top Box of second aspect, in the first possible Set Top Box of second aspect,
Described extraction unit, also for extracting SDT Service Description Table SDT;
Described resolution unit, also for resolving described SDT, to obtain Business Name and the service provider information of program in described transport stream;
Described Set Top Box also comprises:
First updating block, for described Business Name and described service provider information are added into described EPG, to upgrade described EPG.
In conjunction with the Set Top Box of second aspect or the first possible Set Top Box of second aspect, in the Set Top Box that the second of second aspect is possible,
Described extraction unit, also for extracting Event Information Table EIT;
Described resolution unit, also for resolving described EIT, to obtain the event information parameter comprised in described transport stream;
Described Set Top Box also comprises:
Second updating block, for described event information parameter is added into described EPG, to upgrade described EPG.
In conjunction with the Set Top Box that the second of second aspect is possible, in the third possible Set Top Box of second aspect, described Set Top Box also comprises:
Receiving element, for receiving the first channel switching instruction of user's input;
Detecting unit, for responding described first channel switching instruction, whether the frequency detecting the frequency of current channel of the broadcasting channel corresponding with described first channel switching instruction is consistent;
Acquiring unit, if detect described viewing frequency higher than described predeterminated frequency threshold value for described detecting unit, then obtains event information parameter corresponding to the frequency of the channel corresponding with described first channel switching instruction from described EIT;
Display unit, the event information parameter that the frequency for showing described corresponding with described first channel switching instruction channel is corresponding.
In conjunction with the third possible Set Top Box of second aspect, in the 4th kind of possible Set Top Box of second aspect, described Set Top Box also comprises:
Start unit, if detect described viewing frequency lower than described predeterminated frequency threshold value for described detecting unit, then starts countdown mode;
Described detecting unit, also for when at the end of described countdown mode timing, detects whether receive the second channel switching instruction;
Described acquiring unit, does not receive described second channel switching instruction if also detect for described detecting unit, then obtain event information data corresponding to the frequency of the channel corresponding with described first channel switching instruction from described EIT;
Described display unit, also for event information parameter that the frequency showing the described channel corresponding with described first channel switching instruction is corresponding.
In the embodiment of the present invention, Set Top Box is extracting directly network information table NIT from transport stream first; Resolve NIT again, to obtain the channel resource information table of current use network of network title and current use network; Finally set up the electronic program guide (EPG) mated with network name and channel resource information table.In embodiments of the present invention, Set Top Box is when setting up EPG, without the need to first obtaining PAT, again by resolving PAT to obtain transmitting identification code, and obtain NIT by transmission identification code, but directly from transport stream, extract NIT, and obtain the channel resource information table of current use network of network title and current use network by resolving NIT, to set up EPG, thus required duration when setting up EPG can be reduced.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of a kind of electronic program guides method for building up disclosed in the embodiment of the present invention;
Fig. 2 is the schematic flow sheet of another kind of electronic program guides method for building up disclosed in the embodiment of the present invention;
Fig. 3 is the structural representation of a kind of Set Top Box disclosed in the embodiment of the present invention;
Fig. 4 is the structural representation of another kind of Set Top Box disclosed in the embodiment of the present invention;
Fig. 5 is the structural representation of the embodiment of the present invention another Set Top Box disclosed.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the invention discloses a kind of electronic program guides method for building up and Set Top Box.In embodiments of the present invention, Set Top Box is when setting up EPG, without the need to first obtaining PAT, again by resolving PAT to obtain transmitting identification code, and obtain NIT by transmission identification code, but directly from transport stream, extract NIT, and obtain the channel resource information table of current use network of network title and current use network by resolving NIT, to set up EPG, thus required duration when setting up EPG can be reduced.Below be described in detail respectively.
Refer to Fig. 1, Fig. 1 is the schematic flow sheet of a kind of electronic program guides method for building up disclosed in the embodiment of the present invention.Wherein, the method shown in Fig. 1 is applicable to Set Top Box, and as shown in Figure 1, this electronic program guides method for building up can comprise the following steps:
101, from transport stream, network information table NIT is extracted.
In the embodiment of the present invention, the single data flow combined by the elementary stream of one or more packings having common time base or have independent time reference is called transport stream (TransportStream, TS).TS is actual is the transport layer interface of Facing Digital allocation vehicle (wired, satellite, terrestrial network).First program multiplexing is carried out to the elementary stream of the plural packing with common time base, and then multiplexing to each process of independent time reference mutually can be had to carry out transmission, the elementary stream by each packing is subdivided into less transport stream packets again.TS bag is made up of packet header, self adaptation district and bag data 3 part.Each packet length is fixing 188B, and packet header length accounts for 4B, and self adaptation district and bag data length account for 184B.184B is useful information space, for transmitting encoded video/audio data flow.When timer reference of programs (ProgramClockReference, PCR) exists, packet header also comprises the self adaptation district of variable-length, and the length in packet header will be greater than 4B.Consider and the relation communicated, whole transmission package regular length should be equivalent to 4 self adaptation bags.Consider that encryption is according to the scrambling of 8B order, the length in the self adaptation district and bag data that represent useful information should be the integral multiple of 8B, and namely self adaptation district and bag data are 23 × 8B=184B.The packet header of TS bag is made up of sync byte, transmission error code designator, PU Payload Unit start indicator, transmission preferences, transmission identification code (PacketIdentification, PID), transmission scrambling control, the control of self adaptation district and continuous counter 8 part.TS bag self adaptation district by the self adaptation head of district, various flag indicator, with insertion indicate that relevant information and padding data 4 part form.Wherein character portion by being interrupted designator, random access indicator, ES optimizes designator, PCR mark, contact mark, transmission private data flag, original PCR mark, extension flag 8 parts in self adaptation district form.
In the embodiment of the present invention, network information table (NetworkInformationTable, NIT) mainly provides the information about physical network, and network information table transmits some information of present networks and other relevant therewith network.Each network has unique identifier.Network information table mainly carries: network identifier, network name, transmission system parameters (line transmission system parameter comprises: the information such as frequency, modulation system, symbol rate and program service type).As long as Set Top Box be tuned to carry in the transmission class of NIT, can extract the parameter of other network, general decoder just can according to the information extracted, auto channel search.
102, NIT is resolved, to obtain the channel resource information table of current use network of network title and current use network.
In the embodiment of the present invention, after having extracted NIT in Set Top Box from transport stream, then Set Top Box can resolve NIT, to obtain the channel resource information table of current use network of network title and current use network.
Particularly, current use network of network title can be obtained from NIT table, network name general description be the title of Virtual network operator, can show on screen.The channel resource information table of current network can also be obtained from NIT table, and primary key value, modulation system, the symbol rate of at least one channel can be obtained from channel resource information table.Wherein, the channel resource information table of current use network can comprise the channel resource information table that Set Top Box corresponding to current use network manages.
103, the electronic program guide (EPG) mated with network name and channel resource information table is set up.
In the embodiment of the present invention, the Main Function of electronic program guides (ElectricalProgramGuide, EPG) EPG is exactly the menu that user utilizes EPG to provide, and can select the multicast channel oneself liked; The video frequency program that program request oneself is liked; The song that online performance is liked oneself; Search the various information that IPTV provides, comprise life information, entertainment information, educational information, sport information etc.; The menu that user also can use EPG to provide is to order the program oneself liked; The menu that even can be provided by EPG is paid water rate, the electricity charge, carries out the transaction etc. of ecommerce.User can also utilize EPG menu to check the additional information of program, such as, to the introduction etc. of program content descriptions, performer and director.Parental control function simultaneously by providing in EPG menu, the head of a family can be limited some program, not to the viewing authority that child is open all.
The basic service that EPG provides for IPTV is (as interactive multimedia video request program (VideoOnDemand, VOD)/KTV/ song) and the use of various value-added service provide operating platform simply and easily, for IPTV user's TV reception, enjoy multimedia programming program request and carry out information service and provide a good navigation mechanism.Use EPG system that user can be enable to find the program oneself be concerned about quickly and easily.Use EPG system, user just can log in Internet by this terminal of television set and IP Set Top Box.The more important thing is and use EPG system user just can carry out interaction with TV, such user just receives information no longer passively, and user can deliver oneself suggestion and view in time, on one's own initiative, and these suggestions and view are fed back to content production business in time.
In the embodiment of the present invention, after the channel resource information table obtaining current use network of network title and current use network, then Set Top Box can set up the electronic program guide (EPG) mated with network name and channel resource information table.
In FIG, Set Top Box first extracting directly network information table NIT from transport stream is described in detail; Resolve NIT again, to obtain the channel resource information table of current use network of network title and current use network; Finally set up the electronic program guide (EPG) mated with network name and channel resource information table.In embodiments of the present invention, Set Top Box is when setting up EPG, without the need to first obtaining PAT, again by resolving PAT to obtain transmitting identification code, and obtain NIT by transmission identification code, but directly from transport stream, extract NIT, and obtain the channel resource information table of current use network of network title and current use network by resolving NIT, to set up EPG, thus required duration when setting up EPG can be reduced.
Refer to Fig. 2, Fig. 2 is the schematic flow sheet of another kind of electronic program guides method for building up disclosed in the embodiment of the present invention, and as shown in Figure 2, this electronic program guides method for building up can comprise the following steps:
201, from transport stream, network information table NIT is extracted.
202, NIT is resolved, to obtain the channel resource information table of current use network of network title and current use network.
In the embodiment of the present invention, the primary key value of at least one channel, modulation system, symbol rate can be obtained from channel resource information table.
As the optional execution mode of one, Set Top Box can also extract SDT Service Description Table SDT from transport stream; Can comprise the following steps particularly:
11) SDT Service Description Table SDT is extracted;
12) SDT is resolved, to obtain Business Name and the service provider information of program in transport stream;
13) Business Name and service provider information are added into electronic program guide (EPG), to upgrade electronic program guide (EPG).
In the embodiment of the present invention, SDT Service Description Table (ServiceDescriptionTable, SDT) business refers under the control of broadcaster, as per the schedule a series of programs of distributed broadcast.SDT Service Description Table provides the data of business in descriptive system, such as Business Name, service provider information.SDT Service Description Table can describe existing transmission class, also can describe other transmission class.
Particularly, after extraction SDT Service Description Table SDT, then SDT can be resolved, to obtain Business Name and the service provider information of program in transport stream; Business Name and service provider information are added into electronic program guide (EPG), to upgrade electronic program guide (EPG).By this inventive embodiments real-time, the information of EPG can be improved further, better serve to be supplied to user and to experience.
As the optional execution mode of another kind, Set Top Box can also extract Event Information Table EIT, and concrete can comprise the following steps:
21) Event Information Table EIT is extracted;
22) EIT is resolved, to obtain the event information parameter comprised in transport stream;
23) event information parameter is added into electronic program guide (EPG), to upgrade electronic program guide (EPG).
In the embodiment of the present invention, Event Information Table (EventInformationTable, EIT) is broadcasting and TV proprietary terms.Be one of them table in the SI in DVB, this table is the further description to a certain road program.It provides the title, time started, time span, running status etc. of event, and Event Information Table is used for the information of the event transmitting current, in the future even farther future.Each Service has oneself independently EIT sublist.
Particularly, after Set Top Box extracts Event Information Table EIT, EIT can be resolved, to obtain the event information parameter comprised in transport stream; And event information parameter is added into electronic program guide (EPG), to upgrade electronic program guide (EPG).By implementing this inventive embodiments, EPG can be improved further, giving user programme information specifically, improve Consumer's Experience.
203, the electronic program guide (EPG) mated with network name and channel resource information table is set up.
204, the first channel switching instruction of user's input is received.
In the embodiment of the present invention, first channel switching instruction of user's input can be inputted by the target button in touch-control Set Top Box, also can be that target button in the remote controller mated with Set Top Box by touch-control is inputted, can also be inputted by the target button in touch control display terminal, the embodiment of the present invention be not construed as limiting.Wherein, the first channel switching instruction is mainly for the instruction of the current channel play, but current broadcasting might not be switched to another channel by this first channel switching instruction.For example, playing one, central authorities if current, but after input the first channel switching instruction, channel corresponding to the first channel switching instruction can be still one, central authorities.First channel switching instruction also can be to another channel by the current channel switch play, for example, one, central authorities are being play if current, and channel corresponding to the first channel switching instruction is HNTV, then the program that Set Top Box can control Set Top Box to play switches to HNTV from one, central authorities.
205, respond the first channel switching instruction, whether the frequency detecting the frequency of current channel of the broadcasting channel corresponding with the first channel switching instruction is consistent.
In the embodiment of the present invention, after the first channel switching instruction receiving user's input, then Set Top Box can determine for the mark identifying channel the channel that the first channel switching instruction is corresponding according to what carry in the first channel switching instruction; And whether the frequency of the frequency detecting current channel of the broadcasting channel corresponding with the first channel switching instruction is consistent.Wherein, frequency may at least one channel corresponding, and such as, the frequency that the channels such as one, central authorities, two, central authorities, three, central authorities and four, central authorities are corresponding is same frequency.
Particularly, after the first channel switching instruction receiving user's input, then can respond the first channel switching instruction, whether the frequency detecting the frequency of current channel of the broadcasting channel corresponding with the first channel switching instruction is consistent, if detect, the frequency of the channel that the frequency of current channel of broadcasting is corresponding with the first channel switching instruction is consistent, then detect in Set Top Box the event information parameter whether obtained on this frequency, if obtain, then Set Top Box does not do any process, if do not obtain, then Set Top Box obtains the event information data on this frequency.
If 206 is inconsistent, then obtain the viewing frequency of channel corresponding to the first channel switching instruction.
In the embodiment of the present invention, if detect, the inconsistent Set Top Box of frequency of the channel that the frequency of current channel of broadcasting is corresponding with the first channel switching instruction can obtain the viewing frequency of channel corresponding to the first channel switching instruction.Wherein, the viewing frequency that Set Top Box obtains channel corresponding to the first channel switching instruction mainly comprises the viewing frequency that Set Top Box obtains channel corresponding to the first channel switching instruction in preset time period.Wherein, the length of preset time period can be that user sets as required, and also can be that Set Top Box sets according to the history setting recording of user, the embodiment of the present invention be not construed as limiting.
207, whether viewing frequency is detected higher than predeterminated frequency threshold value.
In the embodiment of the present invention, a predeterminated frequency threshold value can be preset in Set Top Box, wherein, this predeterminated frequency threshold value can be that user sets as required, also can be that Set Top Box sets according to the history setting recording of user, can also be that the frequency that Set Top Box watches TV according to user sets, the embodiment of the present invention be not construed as limiting.
In the embodiment of the present invention, after the viewing frequency of channel corresponding to acquisition first channel switching instruction, then whether Set Top Box can detect viewing frequency higher than predeterminated frequency threshold value
If 208 detect viewing frequencies higher than predeterminated frequency threshold value, then obtain event information parameter corresponding to the frequency of the channel corresponding with the first channel switching instruction from EIT.
In the embodiment of the present invention, if detect viewing frequency higher than predeterminated frequency threshold value, then illustrate that user may this also may continue to watch the channel corresponding with the first channel switching instruction, then Set Top Box can from event information parameter corresponding to the frequency of the EIT acquisition channel corresponding with the first channel switching instruction.
Further, if detect viewing frequency lower than predeterminated frequency threshold value, then Set Top Box can start countdown mode; When at the end of countdown mode timing, detect whether receive the second channel switching instruction; Do not receive the second channel switching instruction if detect, then obtain event information data corresponding to the frequency of the channel corresponding with the first channel switching instruction from EIT; Show the event information parameter that the frequency of the channel corresponding with the first channel switching instruction is corresponding.
209, the event information parameter that the frequency of the channel that display is corresponding with the first channel switching instruction is corresponding.
In fig. 2, describe Set Top Box in detail after establishing EPG, then user can carry out channel switch as required, and whether Set Top Box can detect the viewing frequency of channel corresponding to the first channel switching instruction higher than predeterminated frequency threshold value in handoff procedure; If detect viewing frequency higher than predeterminated frequency threshold value, then obtain event information parameter corresponding to the frequency of the channel corresponding with the first channel switching instruction from EIT; Show the event information parameter that the frequency of the channel corresponding with the first channel switching instruction is corresponding.As can be seen here, implement the embodiment of the present invention, can reduce in switching channels process, channel switch duration.
Refer to Fig. 3, Fig. 3 is the structural representation of a kind of Set Top Box disclosed in the embodiment of the present invention, for performing above-mentioned electronic program guides method for building up.As shown in Figure 3, this Set Top Box can comprise: extraction unit 301, resolution unit 302 and set up unit 303, wherein,
Extraction unit 301, for extracting network information table NIT from transport stream.
In the embodiment of the present invention, the single data flow combined by the elementary stream of one or more packings having common time base or have independent time reference is called transport stream (TransportStream, TS).TS is actual is the transport layer interface of Facing Digital allocation vehicle (wired, satellite, terrestrial network).First program multiplexing is carried out to the elementary stream of the plural packing with common time base, and then multiplexing to each process of independent time reference mutually can be had to carry out transmission, the elementary stream by each packing is subdivided into less transport stream packets again.TS bag is made up of packet header, self adaptation district and bag data 3 part.Each packet length is fixing 188B, and packet header length accounts for 4B, and self adaptation district and bag data length account for 184B.184B is useful information space, for transmitting encoded video/audio data flow.When timer reference of programs (ProgramClockReference, PCR) exists, packet header also comprises the self adaptation district of variable-length, and the length in packet header will be greater than 4B.Consider and the relation communicated, whole transmission package regular length should be equivalent to 4 self adaptation bags.Consider that encryption is according to the scrambling of 8B order, the length in the self adaptation district and bag data that represent useful information should be the integral multiple of 8B, and namely self adaptation district and bag data are 23 × 8B=184B.The packet header of TS bag is made up of sync byte, transmission error code designator, PU Payload Unit start indicator, transmission preferences, transmission identification code (PacketIdentification, PID), transmission scrambling control, the control of self adaptation district and continuous counter 8 part.TS bag self adaptation district by the self adaptation head of district, various flag indicator, with insertion indicate that relevant information and padding data 4 part form.Wherein character portion by being interrupted designator, random access indicator, ES optimizes designator, PCR mark, contact mark, transmission private data flag, original PCR mark, extension flag 8 parts in self adaptation district form.
In the embodiment of the present invention, network information table (NetworkInformationTable, NIT) mainly provides the information about physical network, and network information table transmits some information of present networks and other relevant therewith network.Each network has unique identifier.Network information table mainly carries: network identifier, network name, transmission system parameters (line transmission system parameter comprises: the information such as frequency, modulation system, symbol rate and program service type).As long as Set Top Box be tuned to carry in the transmission class of NIT, can extract the parameter of other network, general decoder just can according to the information extracted, auto channel search.
Resolution unit 302, for resolving NIT, to obtain the channel resource information table of current use network of network title and current use network.
In the embodiment of the present invention, after extraction unit 301 has extracted NIT from transport stream, then resolution unit 302 can resolve NIT, to obtain the channel resource information table of current use network of network title and current use network.
Particularly, current use network of network title can be obtained from NIT table, network name general description be the title of Virtual network operator, can show on screen.The channel resource information table of current network can also be obtained from NIT table, and primary key value, modulation system, the symbol rate of at least one channel can be obtained from channel resource information table.Wherein, the channel resource information table of current use network can comprise the channel resource information table that Set Top Box corresponding to current use network manages.
Set up unit 303, for setting up the electronic program guide (EPG) mated with network name and channel resource information table.
In the embodiment of the present invention, the Main Function of electronic program guides (ElectricalProgramGuide, EPG) EPG is exactly the menu that user utilizes EPG to provide, and can select the multicast channel oneself liked; The video frequency program that program request oneself is liked; The song that online performance is liked oneself; Search the various information that IPTV provides, comprise life information, entertainment information, educational information, sport information etc.; The menu that user also can use EPG to provide is to order the program oneself liked; The menu that even can be provided by EPG is paid water rate, the electricity charge, carries out the transaction etc. of ecommerce.User can also utilize EPG menu to check the additional information of program, such as, to the introduction etc. of program content descriptions, performer and director.Parental control function simultaneously by providing in EPG menu, the head of a family can be limited some program, not to the viewing authority that child is open all.
The basic service that EPG provides for IPTV is (as interactive multimedia video request program (VideoOnDemand, VOD) //KTV/ song) and the use of various value-added service provide operating platform simply and easily, for IPTV user's TV reception, enjoy multimedia programming program request and carry out information service and provide a good navigation mechanism.Use EPG system that user can be enable to find the program oneself be concerned about quickly and easily.Use EPG system, user just can log in Internet by this terminal of television set and IP Set Top Box.The more important thing is and use EPG system user just can carry out interaction with TV, such user just receives information no longer passively, and user can deliver oneself suggestion and view in time, on one's own initiative, and these suggestions and view are fed back to content production business in time.
In the embodiment of the present invention, after the channel resource information table obtaining current use network of network title and current use network, then set up unit 303 and can set up the electronic program guide (EPG) mated with network name and channel resource information table.
In figure 3, extraction unit 301 first extracting directly network information table NIT from transport stream is described in detail; Resolution unit 302 resolves NIT again, to obtain the channel resource information table of current use network of network title and current use network; Finally set up unit 303 and set up the electronic program guide (EPG) mated with network name and channel resource information table.In embodiments of the present invention, set up unit 303 when setting up EPG, without the need to first obtaining PAT, again by resolving PAT to obtain transmitting identification code, and obtain NIT by transmission identification code, but extraction unit 301 directly extracts NIT from transport stream, resolution unit 302 also obtains the channel resource information table of current use network of network title and current use network by resolving NIT, to set up EPG, thus required duration when setting up EPG can be reduced.
Refer to Fig. 4, Fig. 4 is the structural representation of another kind of Set Top Box disclosed in the embodiment of the present invention, for performing above-mentioned electronic program guides method for building up.Wherein, Fig. 4 obtains at the enterprising step refining in the basis of Fig. 3, except comprising all unit shown in Fig. 3, can also comprise: the first updating block 304, second updating block 305, receiving element 306, detecting unit 307, acquiring unit 308, display unit 309 and start unit 310, wherein
Extraction unit 301, also for extracting SDT Service Description Table SDT.
Resolution unit 302, also for resolving SDT, to obtain Business Name and the service provider information of program in transport stream.
First updating block 304, for Business Name and service provider information are added into EPG, to upgrade described EPG.
Extraction unit 301, also for extracting Event Information Table EIT.
Resolution unit 302, also for resolving EIT, to obtain the event information parameter comprised in transport stream.
Second updating block 305, for event information parameter is added into described EPG, to upgrade EPG.
Receiving element 306, for receiving the first channel switching instruction of user's input.
Detecting unit 307, for responding the first channel switching instruction, whether the frequency detecting the frequency of current channel of the broadcasting channel corresponding with the first channel switching instruction is consistent.
Acquiring unit 308, if detect viewing frequency higher than predeterminated frequency threshold value for detecting unit 307, then obtains event information parameter corresponding to the frequency of the channel corresponding with the first channel switching instruction from EIT.
Display unit 309, the event information parameter that the frequency for showing the channel corresponding with the first channel switching instruction is corresponding.
Start unit 310, if detect viewing frequency lower than predeterminated frequency threshold value for detecting unit 307, then starts countdown mode.
Detecting unit 307, also for when at the end of countdown mode timing, detects whether receive the second channel switching instruction.
Acquiring unit 308, does not receive the second channel switching instruction if also detect for detecting unit 307, then obtain event information data corresponding to the frequency of the channel corresponding with the first channel switching instruction from EIT.
Display unit 309, also for event information parameter that the frequency showing the channel corresponding with the first channel switching instruction is corresponding.
Refer to Fig. 5, Fig. 5 is the structural representation of the embodiment of the present invention another Set Top Box disclosed, for performing above-mentioned electronic program guides method for building up.Wherein, as shown in Figure 5, this Set Top Box 400 can comprise: at least one processor 401, at least one input unit 402, at least one output device 403, assembly such as memory 404 grade.Wherein, these assemblies are communicated to connect by one or more bus 405.It will be appreciated by those skilled in the art that, the structure of the Set Top Box shown in Fig. 5 does not form the restriction to the embodiment of the present invention, it both can be busbar network, also can be hub-and-spoke configuration, the parts more more or less than diagram can also be comprised, or combine some parts, or different parts are arranged.Wherein: processor 401 is the control centre of Set Top Box, utilize the various piece of various interface and the whole Set Top Box of connection, by running or perform the program in memory 404 of being stored in and/or module, and call the data be stored in memory 404, with the various function of execution machine top box and deal with data.Processor 401 by integrated circuit (IntegratedCircuit is called for short IC) composition, such as, can be made up of the IC of single encapsulation, also can be made up of the encapsulation IC connecting many identical functions or difference in functionality.For example, processor 401 can only comprise central processing unit (CentralProcessingUnit, be called for short CPU), also can be CPU, digital signal processor (digitalsignalprocessor, be called for short DSP), the combination of graphic process unit (GraphicProcessingUnit, be called for short GPU) and various control chip.In embodiments of the present invention, CPU can be single arithmetic core, also can comprise multioperation core.
Input unit 402 can comprise the touch-screen, keyboard etc. of standard, also can include line interface, wave point etc.
Output device 403 can comprise display screen, loud speaker etc., also can include line interface, wave point etc.
Memory 404 can be used for storing software program and module, processor 401, input unit 402 and output device 403 are stored in software program in memory 404 and module by calling, thus the various functions of execution machine top box application and realize data processing.Memory 404 mainly comprises program storage area and data storage area, and wherein, program storage area can storage operation system, application program etc. needed at least one function; Data storage area can store the data etc. created according to the use of Set Top Box.In embodiments of the present invention, operating system can be android system, iOS system or Windows operating system etc.
Particularly, processor 401 calls the application program be stored in memory 404, for performing following operation:
Processor 401 extracts network information table NIT from transport stream;
NIT resolved by processor 401, to obtain the channel resource information table of current use network of network title and current use network;
The electronic program guide (EPG) mated with network name and channel resource information table set up by processor 401.
In the present invention, processor 401 calls the application program be stored in memory 404, can also perform following steps:
Processor 401 extracts SDT Service Description Table SDT;
SDT resolved by processor 401, to obtain Business Name and the service provider information of program in transport stream;
Business Name and service provider information are added into EPG by processor 401, to upgrade EPG.
In the present invention, processor 401 calls the application program be stored in memory 404, can also perform following steps:
Processor 401 extracts Event Information Table EIT;
EIT resolved by processor 401, to obtain the event information parameter comprised in transport stream;
Event information parameter is added into EPG by processor 401, to upgrade EPG.
In the present invention, processor 401 calls the application program be stored in memory 404, can also perform following steps:
Processor 401 control inputs device 402 receives the first channel switching instruction of user's input;
Processor 401 responds the first channel switching instruction, and whether the frequency detecting the frequency of current channel of the broadcasting channel corresponding with the first channel switching instruction is consistent;
If inconsistent, then processor 401 obtains the viewing frequency of channel corresponding to the first channel switching instruction;
Whether processor 401 detects viewing frequency higher than predeterminated frequency threshold value;
If processor 401 detects viewing frequency higher than predeterminated frequency threshold value, then obtain event information parameter corresponding to the frequency of the channel corresponding with the first channel switching instruction from EIT;
Processor 401 controls output device 403 and shows event information parameter corresponding to the frequency of the channel corresponding with the first channel switching instruction.
In the present invention, processor 401 calls the application program be stored in memory 404, can also perform following steps:
If processor 401 detects viewing frequency lower than predeterminated frequency threshold value, then start countdown mode;
When at the end of countdown mode timing, detect whether receive the second channel switching instruction;
If processor 401 detects do not receive the second channel switching instruction, then obtain event information data corresponding to the frequency of the channel corresponding with the first channel switching instruction from EIT;
Processor 401 control output device 403 show with event information parameter corresponding to the frequency of channel corresponding to the first channel switching instruction.
Concrete, the part or all of flow process in the electronic program guides method for building up embodiment that the Set Top Box introduced in the embodiment of the present invention can implement composition graphs 1 of the present invention, Fig. 2 introduces.
Module in all embodiments of the present invention or submodule, universal integrated circuit can be passed through, such as CPU (CentralProcessingUnit, central processing unit), or realized by ASIC (ApplicationSpecificIntegratedCircuit, application-specific integrated circuit (ASIC)).
Step in embodiment of the present invention method can be carried out order according to actual needs and be adjusted, merges and delete.
Unit in embodiment of the present invention Set Top Box can carry out merging, divide and deleting according to actual needs.
One of ordinary skill in the art will appreciate that all or part of flow process realized in above-described embodiment method, that the hardware that can carry out instruction relevant by computer program has come, described program can be stored in a computer read/write memory medium, this program, when performing, can comprise the flow process of the embodiment as above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-OnlyMemory, ROM) or random access memory (RandomAccessMemory is called for short RAM) etc.
Above disclosedly be only present pre-ferred embodiments, certainly can not limit the interest field of the present invention with this, therefore according to the equivalent variations that the claims in the present invention are done, still belong to the scope that the present invention is contained.
Claims (10)
1. an electronic program guides method for building up, is characterized in that, comprising:
Network information table NIT is extracted from transport stream;
Resolve described NIT, to obtain the channel resource information table of current use network of network title and described current use network;
Set up the electronic program guide (EPG) mated with described network name and described channel resource information table.
2. method according to claim 1, is characterized in that, described method also comprises:
Extract SDT Service Description Table SDT;
Resolve described SDT, to obtain Business Name and the service provider information of program in described transport stream;
Described Business Name and described service provider information are added into described EPG, to upgrade described EPG.
3. method according to claim 1 and 2, is characterized in that, described method also comprises:
Extract Event Information Table EIT;
Resolve described EIT, to obtain the event information parameter comprised in described transport stream;
Described event information parameter is added into described EPG, to upgrade described EPG.
4. method according to claim 3, is characterized in that, described method also comprises:
Receive the first channel switching instruction of user's input;
Respond described first channel switching instruction, whether the frequency detecting the frequency of current channel of the broadcasting channel corresponding with described first channel switching instruction is consistent;
If inconsistent, then obtain the viewing frequency of channel corresponding to described first channel switching instruction;
Whether detect described viewing frequency higher than predeterminated frequency threshold value;
If detect described viewing frequency higher than described predeterminated frequency threshold value, then obtain event information parameter corresponding to the frequency of the channel corresponding with described first channel switching instruction from described EIT;
Show the event information parameter that the frequency of described corresponding with described first channel switching instruction channel is corresponding.
5. method according to claim 4, is characterized in that, described method also comprises:
If detect described viewing frequency lower than described predeterminated frequency threshold value, then start countdown mode;
When at the end of described countdown mode timing, detect whether receive the second channel switching instruction;
Do not receive described second channel switching instruction if detect, then obtain event information data corresponding to the frequency of the channel corresponding with described first channel switching instruction from described EIT;
Show the event information parameter that the frequency of described corresponding with described first channel switching instruction channel is corresponding.
6. a Set Top Box, is characterized in that, comprising:
Extraction unit, for extracting network information table NIT from transport stream;
Resolution unit, for resolving described NIT, to obtain the channel resource information table of current use network of network title and described current use network;
Set up unit, for setting up the electronic program guide (EPG) mated with described network name and described channel resource information table.
7. Set Top Box according to claim 6, is characterized in that,
Described extraction unit, also for extracting SDT Service Description Table SDT;
Described resolution unit, also for resolving described SDT, to obtain Business Name and the service provider information of program in described transport stream;
Described Set Top Box also comprises:
First updating block, for described Business Name and described service provider information are added into described EPG, to upgrade described EPG.
8. the Set Top Box according to claim 6 or 7, is characterized in that,
Described extraction unit, also for extracting Event Information Table EIT;
Described resolution unit, also for resolving described EIT, to obtain the event information parameter comprised in described transport stream;
Described Set Top Box also comprises:
Second updating block, for described event information parameter is added into described EPG, to upgrade described EPG.
9. Set Top Box according to claim 8, is characterized in that, described Set Top Box also comprises:
Receiving element, for receiving the first channel switching instruction of user's input;
Detecting unit, for responding described first channel switching instruction, whether the frequency detecting the frequency of current channel of the broadcasting channel corresponding with described first channel switching instruction is consistent;
Acquiring unit, if detect described viewing frequency higher than described predeterminated frequency threshold value for described detecting unit, then obtains event information parameter corresponding to the frequency of the channel corresponding with described first channel switching instruction from described EIT;
Display unit, the event information parameter that the frequency for showing described corresponding with described first channel switching instruction channel is corresponding.
10. Set Top Box according to claim 9, is characterized in that, described Set Top Box also comprises:
Start unit, if detect described viewing frequency lower than described predeterminated frequency threshold value for described detecting unit, then starts countdown mode;
Described detecting unit, also for when at the end of described countdown mode timing, detects whether receive the second channel switching instruction;
Described acquiring unit, does not receive described second channel switching instruction if also detect for described detecting unit, then obtain event information data corresponding to the frequency of the channel corresponding with described first channel switching instruction from described EIT;
Described display unit, also for event information parameter that the frequency showing the described channel corresponding with described first channel switching instruction is corresponding.
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