Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
In the present invention, through in digital television server end advertising interface data, ad content data.When receiving the advertisement interface data; Receiving terminal for digital television shows corresponding advertisement interface; When the televiewer hopes to watch advertisement, during input advertisement selection signal, obtain corresponding ad content data and play; And the televiewer is not when hoping to see advertisement, then can close or hides this advertisement interface.Like this, the televiewer can independently confirm current whether playing advertisements, thereby has not only avoided advertisement to watching the influence of program, and spectators select to watch advertisement also to promote the view reception effect of advertisement according to demand.
Fig. 1 shows the flow process of the method for advertising data provided by the invention, and details are as follows:
In step S101, generate the advertising business descriptor, and this advertising business descriptor is carried in the PSI/SI information.
As embodiments of the invention, this advertising business descriptor can be carried in the tables such as Program Map Table PMT, network information table NIT or service groups contingency table BAT in the PSI/SI information, server description list SDT.
This advertising business descriptor has been described: the sign PID of the packet that the advertisement interface data is corresponding, transmission descriptor, ad content data linkage descriptor.Wherein, the ad content data linkage descriptor has been described corresponding transmission sign (transport_stream_id), network identity (original_network_id), the service identifiers (service_id) of ad content data.
Because ad content data possibly obtained through the approach of wired broadcasting or satellite broadcasting or terrestrial broadcasting or network, then this transmission descriptor is respectively wire broadcasting descriptor, satellite broadcasting transmission descriptor, terrestrial broadcasting transmission descriptor or URL (URL).
Below be in the embodiments of the invention, the description of advertising business descriptor in pmt table, advertisement interface The data the GIF image data:
for(i=0;i<N1;i++){
Stream_type/* GIF picture definition 0x05 represent data in the represented privately owned Section of PID */
Reserved/*3 bit, a reservation position */
The elementary_PID/*13 bit, the local * at expression GIF image data place/
Reserved4/* 4 bits, a reservation position */
The ES_info_length/*12 bit, represent next the length * of descriptor/
for(i=0;i<N2;i++){
Descriptor ()/* is to the descriptor of GIF, as the transmission descriptor * at ad content data place/
}
}
Through network advertising content-data, then the frequency of ad content data is the frequency position of URL indication.
Through wire broadcasting, then the wire broadcasting descriptor has been described the frequency of broadcasting of ad content data, and the form of wire broadcasting descriptor is following:
cable_delivery_system_descriptor(){
Descriptor_tag/* descriptor tags, 8 bit */
Descriptor_length/* is the byte number that comprises of descriptor next, 8 bit */
8 numerals of frequency/*BCD representation, preceding 4 numeral MHz, back 4 numerals
KHz, 32 bit */
Reserved_future_use/* keeps the position, 12 bit */
The preceding paragraph error correcting system of the outer coding of FEC_outer/*, 4 bit */
Modulation/* modulation system, 8 bit */
7 numerals that symbol_rate/* binary-coded decimal is represented, conventional letter rate, preceding 4 digitized representations
3 bit digital are represented Ksymbol/s behind Msymbol/s/*, 28 bit */
The preceding paragraph error correcting system 4 bit * of coding in FEC_inner/*/
}
Broadcast transmitted via satellite, then satellite broadcasting transmission descriptor has been described the frequency of broadcasting of ad content data, and the form of satellite broadcasting transmission descriptor is following:
satellite_delivery_system_descriptor(){
The descriptor_tag/* descriptor tags, 8 bit */
Descriptor_length/* is the byte number that comprises of descriptor next, 8 bit */
8 numerals of frequency/*BCD representation, 5 numeral GHz behind preceding 3 numeral GHz
Fractional part, 32 bit */
The longitude station of orbital_position/*BCD representation, 16 bit */
West_east_flag/* represent east longitude still be west longitude 1 bit */
The polarization/* polarization mode, 2 bit */
Modulation/* modulation system 5 bit */
The symbol_rate/* symbol rate, 28 bit */
Coding preceding paragraph error correcting system in the FEC_inner/*, 4 bit */
}
Through terrestrial broadcasting transmission, then terrestrial broadcasting transmission descriptor has been described broadcasting frequently of ad content data
Point, the form of terrestrial broadcasting transmission descriptor is following::
terrestrial_delivery_system_descriptor(){
The descriptor_tag/* descriptor tags, 8 bit */
Descriptor_length/* is the byte number that comprises of descriptor next, 8 bit */
The centre_frequency/* centre frequency is a unit with 10Hz, 32 bit */
The bandwidth/* bandwidth, 3 bit */
Reserved_future_use/* keeps the position, 5 bit */
The constellation/* modulation system, 2 bit */
The hierarchy_information/* hierarchical approaches, 3 bit */
Coding preceding paragraph error correcting system in the code_rate-HP_stream/* high priority, 3 bit */
Coding preceding paragraph error correcting system in the code_rate-LP_stream/* priority, 3 bit */
Guard_interval/* protects spacing parameter, 2 bit */
Transmission_mode/* carrier transmission pattern, 2 bit */
Other_frequency_flag/* representes whether use other frequency, 1 bit */
Reserved_future_use/* keeps the position, 32 bit */
}
And the ad content data linkage descriptor can be following form:
Linkage_descriptor()
{
The descriptor_tag/* descriptor tags, 8 bit */
Descriptor_length/* is the byte number that comprises of descriptor next, 8 bit */
Transport_stream_id/*16 bit transport_stream_id, original_network_id,
The common unique definite programs * of service_id/
Original_network_id/*16 bit */
Service_id/*16 bit */
The linkage_type/*8 bit be defined as here 0xA0*/
if(linkage_type!=0x08){
for(i=0;i<N;i++){
Private_data_byte/* private data */
}
}
}
In step S102, ad content data is added corresponding class indication.
The televiewer watches advertising message for ease, as embodiments of the invention, can be different according to the field of the corresponding advertisement of ad content data, and ad content is classified, add to ad content data and go up corresponding class indication.For example, classify, can advertising message be divided into classifications such as clothes, electronic product, recreation according to the field under the article of advertisement.
In step S103, advertisement interface data, ad content data, the PSI/SI information of carrying the advertising business descriptor are encoded into TS stream broadcast.
Fig. 2 shows the flow process of the player method of advertisement in digital television provided by the invention, and details are as follows:
In step S201, from the PSI/SI information of TS stream, parse the advertising business descriptor.
Owing to carry the advertising business descriptor in the PSI/SI information in the TS stream that digital television server is broadcast, and the advertising business descriptor has sign, can from PSI/SI information, parse the advertising business descriptor according to this sign.
In step S202,, from TS stream, obtain the advertisement interface data according to the advertising business descriptor.
Because in the advertising business descriptor, described the sign PID of the packet of advertisement interface data correspondence, PID can obtain the advertisement interface data according to this sign.
As embodiments of the invention, this advertisement interface data can be the GIF image data, perhaps, also can be JPG, the image data of types such as JPEG.Certainly, except the image data form, the advertisement interface data also can be other data mode, for example document data form.
In step S203, according to the advertisement interface data, the display ads interface.
Watch DTV in order not influence the televiewer, as embodiments of the invention, this advertisement interface is presented at the corner of screen, perhaps, transparency is made at this advertisement interface handled, so that it can not block the digital TV video frequency program.As embodiments of the invention, this advertisement interface can hide, dwindles, close.
As embodiments of the invention, look spectators in a plurality of advertising message power supplies of advertisement interface display and select to watch.Each advertising message can be to show the literal or the picture of this ad content separately, perhaps, can be the corresponding link identification of ad content data.This link identification can be title link or numbering link.
Owing to limited by the size of advertisement interface, screen size, the corresponding link identification of presenting advertising content data not only can show more advertising message on the advertisement interface, and has avoided the data volume of advertisement interface data itself excessive.
In step S204, receive the advertisement selection signal.
When the televiewer was ready to see advertisement, input advertisement selection signal selected to want the advertisement seen.As embodiments of the invention, can number advertising message in advance, the televiewer sends the advertisement selection signal through the corresponding numbering of control button input advertising message, perhaps can send the advertisement selection signal through the title of input advertisement.Certainly, also can a plurality of zones be divided at the advertisement interface, play the advertising message in this zone through the input area corresponding codes.Owing to during the display ads interface, do not stop the broadcast of TV programme, therefore, if the televiewer can ignore the advertisement interface and continue to watch TV programme when being unwilling to watch advertisement, perhaps also can select to close, hide, dwindle the advertisement interface.
In step S205,, obtain advertisement selection signal corresponding advertising content data, and play according to the advertising business descriptor.
Ad content data linkage descriptor in the advertising business descriptor has been described corresponding transmission sign (transport_stream_id), network identity (original_network_id), the service identifiers (service_id) of ad content data; According to above 3 signs, can get access to ad content data.
Fig. 3 shows the structure of the system of advertising data provided by the invention, and this system can be software unit or hardware cell or the unit soft, that scleroma is closed that is built in digital television server.
This system that broadcasts the advertisement in digital television data comprises that advertising business descriptor generation unit 31, data broadcast unit 35.Advertising business descriptor generation unit 31 generates the advertising business descriptor; And this advertising business descriptor is carried in the PSI/SI information, data are broadcast unit 35 and advertisement interface data, ad content data, the PSI/SI information of carrying the advertising business descriptor are encoded into TS stream are play.
The televiewer is more convenient to check advertisement in order to make; As embodiments of the invention; Can broadcast increase class indication adding device 33 between the unit 35 at advertising business descriptor generation unit 31 and data, add corresponding class indications by 33 pairs of ad content data of class indication adding device.
Fig. 4 shows the structure of the Play System of advertisement in digital television provided by the invention, and this system can be software unit or hardware cell or the unit soft, that scleroma is closed that is built in receiving terminal for digital television.
The Play System of this advertisement in digital television comprises advertising business descriptor resolution unit 41, advertisement interface data capture unit 43, advertisement interface display unit 45, advertisement selection signal receiving unit 47, ad content broadcast unit 49.
This advertising business descriptor resolution unit 41 parses the advertising business descriptor from the PSI/SI information of TS stream; Advertisement interface data capture unit 43 is according to the advertising business descriptor; From TS stream, obtain the advertisement interface data, advertisement interface display unit 45 is according to this advertisement interface data, display ads interface; Advertisement selection signal receiving unit 47 receives the advertisement selection signal; Ad content broadcast unit 49 obtains advertisement selection signal corresponding advertising content data, and plays according to the advertising business descriptor from TS stream.
In the present invention, through in digital television server end advertising interface data, ad content data.When receiving the advertisement interface data; Receiving terminal for digital television shows corresponding advertisement interface; When the televiewer hopes to watch advertisement, during input advertisement selection signal, obtain corresponding ad content data and play; And the televiewer is not when hoping to see advertisement, then can close or hides this advertisement interface.Like this, the televiewer can independently confirm current whether playing advertisements, thereby has not only avoided advertisement to watching the influence of program, and spectators select to watch advertisement also to promote the view reception effect of advertisement according to demand.
The above is merely preferred embodiment of the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to replacement and improvement etc., all should be included within protection scope of the present invention.