CN1968421B

CN1968421B - Method and apparatus for implementing digital media advertisement in digital TV system

Info

Publication number: CN1968421B
Application number: CN2006101570455A
Authority: CN
Inventors: 洪子涛; 李义才; 柳生平; 林远大
Original assignee: Shenzhen Skyworth Digital Technology Co Ltd
Current assignee: Shenzhen Skyworth RGB Electronics Co Ltd
Priority date: 2006-11-23
Filing date: 2006-11-23
Publication date: 2012-05-30
Anticipated expiration: 2026-11-23
Also published as: CN1968421A

Abstract

The invention relates to a method for realizing digit media advertisement in digit TV system, and relative device, wherein said method comprises that: using XML format to match present watch guide, to generate relative XML index document; organizing service information list needed by advertisement service and positioning identifier mark of advertisement service data flow; generating the control information and data index information of advertisement service data; packing advertisement data, control information, data index information, XML index document, and service information list, into transmission flow data meeting digit TV standard; transmitting the data, complexing it into digit TV network. And the device comprises: XML advertisement editing module; system information generating module, data packing module, and data complexing playing module. The invention can guide operator to add advertisement service into present digit TV, to reduce cost.

Description

In digital television system, realize the method and the device thereof of digital media advertisement

[technical field]

The present invention relates to the digital television techniques field, particularly in digital television system, realize the method and the device thereof of media advertisement.

[background technology]

Progressively universal, the digital cable customers amount that develop along with digital TV products increase severely day by day, are more and more had an optimistic view of by businessman based on the advertising business of digital media terminal (DTV, STB STB) user interface.As long as the needs of displaying are arranged, businessman all hopes suitable ad data is arranged, be illustrated on all man-machine interfaces with reasonable manner.

Traditional advertisement implementation method is: ad data (as: picture, literal, animation etc.) programming is gone in the memory cell of digital media terminal equipment; When the digital media terminal device power-up; Press set mode through embedded software; From memory cell, call ad data, and on man-machine interface, show; And the shortcoming of this showing advertisement mode is: ways of presentation is dumb, and ad content is single, and the user can not in time understand up-to-date advertising message; If will upgrade ad data; Then must comprise the upgrading of program module update all to the embedded software in the digital media terminal apparatus; This cost concerning the business system of runing is too big; Many cost risks are also arranged, as: digital media terminal equipment is power down suddenly in the process of software upgrading, may cause equipment damage to a certain degree.

In addition, can also be through in digital television program, realizing advertising business, its process is roughly following:

The audio/video program business is carried out digital coding → multiplexing equipment carries out multiplexing process → scrambling encryption → modulation → mixing → transmission → reception → fm demodulation → demultiplexing → decoding → demonstration and exports on digital media terminal equipment

But; The mode of this realization advertising business need be carried out on advertising company accomplishes the basis of advertising shooting, therefore; The advertisement implementation procedure is comparatively complicated; Need the long ad production time, and need the higher advertising expenditure of payment, be unfavorable for that each small business formulates the advertising strategy according to own characteristic.

[summary of the invention]

The technical problem that the present invention will solve provides a kind of method and device thereof of in digital television system, realizing digital media advertisement, and operator can increase various advertising businesses based on the standard of existing DTV, reduces advertising expenditure.

Technical scheme of the present invention is:

In digital television system, realize the method for digital media advertisement, may further comprise the steps:

101, watch guide so that the XML form is corresponding current, and generate corresponding XML index file;

102, tissue is provided with digital television system increases the required service information list of advertising business and the identifier of positioning advertising business data flow;

103, generate the control information and the data directory information of advertisement traffic data information;

104, control information, data directory information, XML index file, service information list and ad data are packaged into the transport stream structure data that meet digital television standard;

105, with said transport stream structure data broadcast, multiplexing transmission is in digital TV network.

Step 101 further comprises:

201,, draw the logical construction of program guide according to the boot sequence and the DISPLAY ORDER of digital media terminal;

202, the corresponding program guide of XML form, and describe the attribute of ad content comprises the order of broadcast and constantly;

203, generate the corresponding XML index file of watching guide.

Step 102 further comprises:

301,, distribute specific transactions numbering and Business Name for the advertising business of said increase by the plan of operation of current digit television system;

302, generate corresponding business crowd contingency table; The value of bouquet identifier is the arbitrary value between the 0x60C0 to 0xFFFE in the named list, and the link descriptor that after bouquet descriptor length field, increases the specific descriptor of private data and be used for positioning advertising business datum sign;

303,, generate the Program Association Table and the Program Map Table of advertising business according to the business numbering and the Business Name that have distributed.

Step 302 further comprises: the value of the descriptor tag in the specific descriptor of said private data is the arbitrary value between the 0x80 to 0xFE, and unique identifier is set to " advertisement ".

Step 302 further comprises: the link type field value in the said link descriptor is the arbitrary value between the 0xA1 to 0xFE, carries the ad data sign in the ground floor circulation of said link descriptor.

Step 303 further comprises: according to the business numbering and the Business Name that have distributed, and the said advertising business of registration in the SDT Service Description Table in the current digit television system.

Step 303 further comprises: the business type field value in the said SDT Service Description Table is the arbitrary value between the 0x80 to 0xFE.

Step 302 further comprises: said advertising business place frequency, modulation system and symbol rate are set in the private_data_bytel territory in the link descriptor of BAT bouquet association table.

The described method that in digital television system, realizes digital media advertisement, when the every generation of the content of ad data once changes, then the version of bouquet correlation table number is worth corresponding change once.

In digital television system, realize the device of digital media advertisement, comprising:

One data multiplex is broadcast module, according to the transmission standard of digital television system the multiple path transmission flow structured data is carried out multiplexing process, generates digital composite stream, and digital composite stream is inserted in the digital TV network;

Also comprise:

One XML advertisement editing module draws corresponding tree structure according to program guide, increases ad data in specific necessary position, and describes its attribute, finally exports corresponding XML index file, realizes advertisement editing;

One system information generation module generates and the required various system business information table data of output digital television system operation advertising business;

And a packing data module, by digital television system information source standard, said system message list data, XML index file and ad data are packaged as the transport stream structure data, and export to said data multiplex to said transport stream structure data and broadcast module.

The invention has the beneficial effects as follows:

Advertisement implementation method of the present invention is based on that the standard of present DTV launches; Through generating the XML index file, the organization number television system realizes the required information table parameter of advertising business, then XML index file, service information list and ad data is packed by digital television standard; Data and television programme data after the last packetized are carried out multiplexing process; And send in the digital TV network, when digital media terminal receives digital composite stream from digital TV network after, through a series of processing; On its display interface, demonstrate ad content at last, thereby realized the advertising function of digital media terminal; Through method of the present invention, only need to change the information relevant with advertising business, get final product online flexible renewal advertisement data content, make the advertisement content variation, satisfy the different consumer groups' demand; The standard of DTV proposes because method of the present invention is based on, and the Hardware configuration of digital media terminal required relatively low, and adaptability is strong; In addition, operator realizes advertising business through method of the present invention, but the real-time online operation, reduces maintenance cost greatly, can be operator and brings increment, has reduced the required various expenses of advertisement that realize simultaneously.

[description of drawings]

Fig. 1 is the module map of advertisement implement device of the present invention.

Fig. 2 is the flow chart of advertisement implementation method of the present invention.

Fig. 3 is the process sketch map that ad data of the present invention upgrades.

[embodiment]

Below in conjunction with accompanying drawing and embodiment the present invention is further set forth:

Fig. 1 is the module map of advertisement implement device of the present invention; This device comprises that XML advertisement editing module, system information generation module, packing data module and data multiplex broadcast module; XML advertisement editing module is connected with packing data module one input; The system information generation module is connected with another input of packing data module; The output of packing data module is connected with the input that data multiplex is broadcast module, and the output that data multiplex is broadcast module is connected in the digital TV network, wherein:

XML advertisement editing module draws corresponding tree structure according to program guide, increases ad data in specific necessary position, and describes its attribute, finally exports corresponding XML index file, realizes advertisement editing;

The system information generation module generates and the required various system message list data of output digital television system operation advertising business;

The packing data module by digital television system information source standard, is packaged as the transport stream structure data with said system message list data, XML structured file and ad data, and exports to said data multiplex to said transport stream structure data and broadcast module;

Data multiplex is broadcast module, according to the transmission standard of digital television system the multiple path transmission flow structured data is carried out multiplexing process, generates digital composite stream, and digital composite spread is passed in the digital TV network.

Fig. 2 is the flow chart of advertisement implementation method of the present invention, mainly may further comprise the steps:

One, watches guide so that the XML form is corresponding current, and generate corresponding XML index file, comprising:, draw the logical construction of program guide according to the boot sequence and the DISPLAY ORDER of digital media terminal; The corresponding program guide of XML, and describe the attribute of ad content comprises the order of broadcast and constantly; Generate the XML index file of corresponding program guide;

Two, tissue is provided with digital television system increases the required service information list of advertising business and the identifier of positioning advertising business data flow; Comprise: by the plan of operation of current digit television system; Distribute specific transactions numbering and Business Name, generate corresponding business crowd contingency table; In service information list, Program Association Table and Program Map Table are registered said advertising business;

Three, generate the control information and the data directory information of advertisement traffic data information;

Four, ad data, control information, data directory information, XML index file and service information list are packaged into the transport stream structure data that meet digital television standard, comprise: the control information to ad data index information and ad data is packed; The XML index file is packaged as the transport stream structure data that meet digital television standard; Ad datas such as " picture, data messages " is packaged into the standard transmission flow structure;

Five, digital composite stream is broadcast, become with other television services data flow multiplexings to above-mentioned transport stream structure data and be transferred in the digital TV network.

After accomplishing five above-mentioned steps, digital media terminal receives digital composite stream to it from digital TV network and carries out handled, just can on its display interface, demonstrate ad content, thereby realize the advertising function of digital media terminal.

Carry out bright specifically in the face of each step of the embodiment of the invention down:

(1) tissue of the ad data of the whole menu structure of the embodiment of the invention is adopted general XML form, realizes advertisement editing, and wherein, the ad content in the ad data is medium, picture and/or text banner.

At first, according to digital media terminal boot sequence, DISPLAY ORDER, the logical construction of abstract program guide (tree structure), for example, the logical construction of program guide, as follows:

Start

|

Show first width of cloth advertisement picture

Show second width of cloth advertisement picture

…

Show n width of cloth advertisement picture

|

Show main menu

|

Show the one or more advertisement picture at the interface of main menu ad-hoc location

|

Wait for that the user selects specific transactions

The user selects specific transactions A

|

The guideline interface of display business A

|

Ad-hoc location shows the one or more advertisement picture at the interface

Secondly, according to the logical construction of above-mentioned program guide, the corresponding program guide of XML is described the DISPLAY ORDER of picture, main menu and various functions, and the contents such as order and the moment of describing attribute, the broadcast of ad content, and concrete XML file structure is following:

Bootlogo/* start-up picture */

Logo1 :/* picture 1*/

file_number：1

format：gif

position：(x，y)

height：100

width：50

duration：2

…

Logo2/* picture 2*/

file_number：2

format：gif

position：(x，y)

height：100

width：50

duration：1

…

MainMenu/* main menu */

Function:TV/* function one */

Item1：

…

Function:Intetactive/* function 2*/

Function:AudioBroadcast/* function ... */

function：favorite

function：Info

function：VOD

function：Mail

function：Config

…

Ad/* main menu advertisement */

Ad1 :/* picture 1*/

file_number：3

format：gif

position：(x，y)

height：100

width：50

duration：0

…

Ad2 :/* picture 2*/

Ad3 :/* picture ... */

ad4：

…

Stripe/* vertically hung scroll */

Current/follow/* is current/follow-up vertically hung scroll ... and */

Channel1 :/* logical channel 1*/

ad1：

file_number：4

format：gif

position：(x，y)

height：100

width：50

duration：2

…

ad2：

…

Channel2 :/* logical channel 2*/

ad1：

ad2：

…

channel3：

ad1：

ad2：

…

channel3：

…

At last,, generate corresponding XML index file (index.xml file) form by above-mentioned XML file structure, as follows:

<?xml?version＝″1.0″encoding＝″UTF-8″?>

<root>

<Logo?name＝″Logo1″>

<file_number>1</file_number>

<position_x>0</position_x>

<position_y>0</position_y>

</Logo>

<Logo?name＝″Logo2″>

<file_number>2<file_number>

<position_x>0</position_x>

<position_y>0</position_y>

</Logo>

</Bootlogo>

<function?name＝″TV″/>

<function?name＝″Intetactive″/>

<function?name＝″AudioBroadcast″/>

<function?name＝″favorite″/>

<function?name＝″Info″/>

<function?name＝″VOD″/>

<function?name＝″Mail″/>

<function?name＝″Config″/>

<ad?name＝″ad1″>

<file_number>3</file_number>

<position_x>0</position_x>

<position_y>0</position_y>

</ad>

</MainMenu>

<Current_follow>

<Network?id＝”100”>

<Ts?id＝”1”>

<Service?id＝″1″>

<ad?name＝″ad1″>

<file_number>4</file_number>

<position_x>0</position_x>

<position_y>0</position_y>

</ad>

Do you think that which team will obtain 2006 German world cup champions < text >? Brazil Ah root

Court of a feudal ruler Germany ...</text>

</subtitle>

</Service>

<Service?id＝″2″>

<ad?name＝″ad1″>

<file_number>5</file_number>

<position_x>0</position_x>

<position_y>0</position_y>

</ad>

<text>Peace is stepped on: I select me to like!</text>

</subtitle>

</Service>

</Ts>

<Ts?id＝”2”>

……

</Ts>

……

</Network>

</Current_follow>

</Stripe>

</root>

(2) for realizing advertising business, tissue is provided with digital television system in the method for the present invention increases the required service information list of advertising business and the identifier of positioning advertising business data flow.

In the data broadcast of digital TV standard, the method that has many realization data to download, the present invention follows data broadcast standard and takes into account simplification, selects following scheme:

1., by the plan of operation of current digit television system, distribute specific transactions numbering and Business Name, organize BAT table (Bouquet Association Table, BAT bouquet association table):

In the PSI/SI of front end EPG system (electronic program guidance system) stream, insert a plurality of linkage_descriptor descriptors that meet the private data standard; The linkage_descriptor descriptor specifically is arranged at the BAT table, describes frequency, business, the PID data such as (identifiers) at ad data place in this descriptor; Be mainly used in and describe advertisement, LOADER data flow, and other BAT tables Bouquet_id assurance can not conflict in the Bouquet_id of this table and the system in the position of native system transmission through network.

Bouquet_id field value in the BAT table is the arbitrary value between the 0x60C0 to 0xFFFE, and the field value that embodiments of the invention are selected is 0xFF00 (following the DVB standard);

In the linkage_descriptor descriptor, the value of linkage_type field is the arbitrary value between the 0xA1 to 0xFE, and the explanation of the linkage_type field value that embodiments of the invention are selected is following:

0xA0 representes Loader upgrading (reservation);

0xA1 representes ad data;

0xA2 ~ ~ 0xFE representes to reserve in the future and uses.

BAT table of the present invention (Bouquet Association Table, BAT bouquet association table) is as shown in the table:

Wherein, any updating data all will cause the version_number value to change (increasing 1) in the ad data, and what data specifically will be located is, then the terminal need travel through the XML file, relatively the version field value.The private data content that the present invention increases newly promptly increases following content after the bouquet_descriptors_length field:

{

Private_data_specifier_descriptor()

Linkage_descriptor()

……

Linkage_descriptor()

}

After the bouquet_descriptors_length field in the newly-increased content, the theing contents are as follows shown in the table of Private_data_specifier_descriptor descriptor:

In the contents table of Private_data_specifier_descriptor descriptor, the unique identifier semanteme is:

The value of descriptor tag descriptor_tag is the arbitrary value between the 0x80 to 0xFE, the descriptor tag descriptor_tag in the embodiment of the invention: be fixed as " 0xF0 ";

Private_ID: suggestion transfers " advertisement " to.

After the bouquet_descriptors_length field in the newly-increased content, the theing contents are as follows shown in the table of Linkage_descriptor descriptor:

In the contents table of Linkage_descriptor descriptor, being identified in the ground floor circulation among the linkage_descriptor of sign advertisement data content carried, being designated of advertisement data content:

for(i＝0；i＜N；i++){

private_data_bytel

}

for(i＝0，i＜n，i++){

private_data_byte2

}

In the contents table of Linkage_descriptor descriptor, the semanteme of linkage descriptor is:

Transport_stream_id:16 bit field, sign comprise the professional TS (MPTS) of appointed information.

The original_network_id:16 bit field, the network_id of the professional original transmitted system of unique identification appointment.

The service_id:16 bit field, the information service among the unique identification TS.Service_id is identical with program_number in the corresponding program map section.If the linkage_type value is 0x04, then service_id is nonsensical, need be made as 0x0000.

The linkage_type:8 bit field, the definition link type, for example with Info Link, see the following form:

Link type	Describe
		0xA0	Reserve and use

0xA1	Ad data
		0xA2 to 0xFF	Reserve and use

In the contents table of Linkage_descriptor descriptor, linkage_type is 0xA1, and the data content (private_data_bytel) that carries transmission is as shown in the table:

In the private_data_bytel contents table, each field semantic as follows:

Frequency f requency:

32 bit fields provide frequency values with 84 binary-coded decimals, and unit is MHz (megahertz).Decimal point is positioned at (as: 0312.0000MHz) after the 4th binary-coded decimal.

Modulation system modulation:

8 bit fields.Point out the modulation system of wired transfer system, the definition following table:

Modulation system (hexadecimal)	Describe
		0x00	Undefined
0x01	16 QAM
		0x02	32 QAM
0x03	64 QAM
		0x04	128?QAM
0x05	256?QAM
		0x06 to 0xFF	Reserve and use

Symbol rate symbol_rate:

28 bit fields are represented the value of symbol rate with 74 binary-coded decimals, and unit is Msymbol/s (million symbolic number/second), and decimal point is positioned at (as: 027.4500) behind the 3rd binary-coded decimal.

AD_Headdata_table_id：

The table identifier of ad data stream head control data table;

AD_Picdata_table_id：

Ad data flow data part (picture part) table identifier initial value, suggestion is decremented to 0x00 from 0xFD.

Private_Data_Byte2: main multifrequency point advertising data keep.

Date_type: reserve and use.

2., according to the business of having distributed numbering and Business Name, the said advertising business of registration in the SDT Service Description Table in digital television system, organize SDT table (SDT Service Description Table):

Professional suggestion is described in the EPG system to ad data stream, and in " service_descriptor " of SDT table, the specified services type is " 0xFE "; SDT Service Description Table is mainly considered not to be had under the support of EPG front end system, realizes advertisement, the professional a kind of solution of LOADER; If the EPG system is arranged, then unification is generated by the EPG system; Mainly to describing current advertisement or LOADER service description, type of service service_type=0xFE (nonnumeric television services).

Theing contents are as follows shown in the table of SDT table:

Wherein, type of service service_type is 8 bit fields, has defined professional type.Its coded system following table:

Service_type	Describe
		0x00	Reserve and use
0x01	Digital television business
		0x02	DARS
0x03	Teletext service
		0x04	NVOD is with reference to business
0x05	The NVOD time-shift service
		0x06	Mosaic service
0x07	The Phase Alternation Line system code signal
		0x08	The Sequential Color and Memory system code signal
0x09	D/D2-MAC
		0x0A	FM broadcasting
0x0B	The TSC-system signal
		0x0C	Data broadcast service
0x0D	Common interface uses to be reserved
		0x0E	RCS shines upon (seeing EN 301 790)
0x0F	RCS FLS (seeing EN 301 790)
		0x10	DVB MHP is professional
0x11 to 0x7F	Reserve and use
		0x80 to 0xFE	User definition
0xFF	Reserve and use

3. according to the business numbering and the Business Name that have distributed, register said advertising business in the program correlation table (pat table) in digital television system.

4. according to the business numbering of having distributed, register said advertising business in the Program Map Table in digital television system (pmt table).

Generate above PSI information (pat table and pmt table), be mainly and adapt to some drop multiplexer apparatus appendix and consider, on many multiplexer equipment, when in the input port during no PAT/PMT table PSI information, refusal with data flow through equipment and generate a business.

It is pointed out that the ad data among the present invention comprises following content:

Control information (DOWN_CTRL_INFO);

Advertisement head data message (AD_HEAD data message), wherein the advertisement head data message comprises XML index file (Index.xml) and advertisement basic data file information (pic_information) pictorial information structure;

And ad content (is example with the picture).

In transmission course, more than the data flow segmental structure of three partial contents as shown in the table:

The structure of wherein, control information (Down_ctrl_info) is as shown in the table:

Syntactic description	Length (bit)	Remarks
			down_ctrl_info_section(){
Table_id	8	0xFE
			Section_syntax_indicator	1
Private_indicator	1
			Reserved	2
Section_length	12
			Table_extension_id＝0x0000	16
Reserved	8
			Section_number＝0x00	8
Last_section_number＝0x00	8
			Index_xml_table_extension_id_start	16
Index_xml_table_extension_id_end	16
			Index_xml_size	32
Pic_information_table_extension_id_start	16
			Pic_information_table_extension_id_end	16
Pic_information_size	32
			CRC_32	32	The check code of dash area
}

Each field implication in the control information (Down_ctrl_info):

The Table_id:8 bit width is put 0xFE;

Section_syntax_indicator: keep, put 1;

Private_indicator: keep, put 1;

Reserved: keep, put 1;

The Table_extension_id:16 bit width is put 0x0000;

The Section_number:8 bit width is put 0x00;

The Last_section_number:8 bit width is put 0x00;

The Index_xml_table_extension_id_start:16 bit width during packing of index.xml file data, is described initial table_extension_id;

The Index_xml_table_extension_id_end:16 bit width during packing of index.xml file data, describes stopping table_extension_id;

The Index_xml_size:32 width, index.xml file size (Byte);

The Pic_information_table_extension_id_start:16 bit width during Pic_informatiom packing data, is described initial table_extension_id;

The Pic_information_table_extension_id_end:16 bit width during Pic_informatiom packing data, describes stopping table_extension_id;

The Pic_information_size:32 width, Pic_informatiom size of data (Byte);

The CRC_32:8 bit width;

Annotate: when data volume very hour, may have following situation:

Index_xml_table_extension_id_start＝Index_xml_table_extension_id_end＝Pic_information_table_extension_id_start＝Pic_information_table_extension_id_end

This moment, Index.xml table (Section) information section_number was from 0 initial, and Pic_information table information section_number then increases progressively initial.

Wherein, advertisement head data message table (AD_HEAD data message table) is as shown in the table:

Syntactic description	Length (bit)	Remarks
			AD_Head_section(){
Table_id	8	0xFE
			Section_syntax_indicator	1
Private_indicator	1
			Reserved	2
Section_length	12
			Table_extension_id	16	=0x0001 is initial
Reserved	8
			Section_number	8	=0x00 is initial
Last_section_number
			{
?Data_type	8	＝0x01(index.xml) ＝0x02 (pic_informaion)
			?Reserved	4
?Data_length	12
			?data_byte	8
}
			CRC_32	32	The check code of dash area
}

Each field implication:

The Table_id:8 bit width is changed to 0xFE;

The Table_extension_id:16 bit width begins from 0x0001;

Data_byte data type among Data_type: this section

=0x01:index.xml file data

=0x02:pic_information data

The Data_length:12 bit width, the length of identification data block is unit with byte Byte;

Data_byte:index.xml file or Pic_information data;

Wherein, advertisement basic data file information pic_information is as shown in the table:

Wherein, image data segment structure table (pic_segment_data) is as shown in the table:

Title	Symbol	Length (bit)	Remarks
				Data type	Data_type	8	Keep
Keep	Reserved	4
				Length	Pic_segment_size	12
Data	Pic_segment_data	8

Wherein, image data table (pic_segment_data_section) is as shown in the table:

Syntactic description	Length (bit)	Remarks
			pic_segment_data_Section(){
Table_id	?8	0xFD
			Section_syntax_indicatcr＝1	?1

‘0’	?1
			reserved	?2
section_length	?12
			table_extension_id	?16
reserved	?8
			section_number	?8
last_section_number	?8
			{
pic_segment_data()
			}
CRC_32	?32	The check code of dash area
			}

The implication of each field:

The Table_id:8 bit width is changed to 0xFD;

The Section_syntax_indicator:8 bit width is changed to 1;

The Section_length:12 bit width, the length of the section of indication after this field;

The Table_extension_id:16 bit width, expansion table_id describes the pictorial data segment number, and the data segment number is since 0 numeration;

The Section_number:8 bit width;

The Lasi_section_number:8 bit width;

CRC?32：MPEG2?CRC?32。

(3) ad data and said information table parameter are packaged into the transport stream structure data that meet digital television standard, comprising: the control information to ad content and ad data is packed; The XML index file is packaged as the transport stream structure data that meet digital television standard; Packing " picture, data message " becomes transport stream structure.

(4) be digital composite stream with television programme data and said transport stream structure data multiplex, be transferred in the digital TV network.

Fig. 3 is the process sketch map that ad data upgrades among the present invention.When ad data has renewal, directly upgrade the version number of BAT table, number change of the version of table judges whether the foundation of update displayed advertisement as digital media terminal.Change in case find version, digital media terminal should receive new data immediately, receives complete back and discharges the legacy data that received originally, upgrades OSD and shows.

Terminal equipment is at first searched BAT bouquet association table (BAT) in network; Field { transport stream identification transport_stream_id by Linkage_descriptor descriptor in the BAT table; Original network identification original_network_id, service identification service_id} come the queries ad business in which network, network, to belong to which physics frequency; Inquire the Program Association Table (PAT) and the Program Map Table (PMT) of current business again by frequency, service_id.

In addition; The present invention can also pass through a kind of faster method sign advertising business; Promptly the direct clear and definite current business in the private_data_bytel territory in the link descriptor of BAT bouquet association table belongs to parameters such as frequency, modulation system, symbol rate, and terminal equipment can be according to the position of the quick positioning advertising business of these parameters in whole network.

In sum, advertisement implementation method of the present invention is based on that the standard of present DTV launches, through generating the XML index file; The organization number television system realizes the required information table parameter of advertising business; Then XML index file, information table parameter and ad data are packed by digital television standard, data and television programme data after the last packetized are carried out multiplexing process, and send in the digital TV network; When digital media terminal receives digital composite stream from digital TV network after; Through a series of processing, on its display interface, demonstrate ad content at last, thereby realized the advertising function of digital media terminal; Through method of the present invention, can online flexible renewal advertisement data content, can be operator and bring increment, reduced the required various expenses of advertisement that realize simultaneously.

Claims

1. in digital television system, realize the method for digital media advertisement, it is characterized in that, may further comprise the steps:

101,, and generate corresponding XML index file with the corresponding program guide of XML form, comprising: according to the boot sequence and the DISPLAY ORDER of digital media terminal, draw the logical construction of program guide; With the corresponding program guide of XML form, and describe the attribute of ad data, comprise the order of broadcast and constantly; Generate the XML index file of corresponding program guide;

102, tissue is provided with digital television system increases the required service information list of advertising business and the identifier of positioning advertising business data flow, comprises;

By the plan of operation of current digit television system, distribute specific transactions numbering and Business Name for the advertising business of said increase;

Generate corresponding business crowd contingency table; The value of bouquet identifier is the arbitrary value between the 0x60C0 to 0xFFFE in the named list, and the link descriptor that in table, increases the specific descriptor of private data and comprise the identifier of positioning advertising business data flow after the bouquet descriptor length field;

According to the business numbering and the Business Name that have distributed, generate the Program Association Table and the Program Map Table of advertising business, and according to the business numbering and the Business Name that have distributed, the said advertising business of registration in the SDT Service Description Table in the current digit television system;

103, generate the control information and the data directory information of ad data;

2. the method that in digital television system, realizes digital media advertisement according to claim 1; It is characterized in that; The value of the descriptor tag in the specific descriptor of said private data is the arbitrary value between the 0x80 to 0xFE, and the unique identifier in the specific descriptor of said private data is set to " advertisement ".

3. the method that in digital television system, realizes digital media advertisement according to claim 1; It is characterized in that; Link type field value in the said link descriptor is the arbitrary value between the 0xAl to 0xFE, carries the identifier of positioning advertising business data flow in the ground floor circulation of said link descriptor.

4. the method that in digital television system, realizes digital media advertisement according to claim 1 is characterized in that the business type field value in the said SDT Service Description Table is the arbitrary value between the 0x80 to 0xFE.

5. the method that in digital television system, realizes digital media advertisement according to claim 1; It is characterized in that said advertisement traffic data stream place frequency, modulation system and symbol rate are set in the private_data_bytel territory in the link descriptor of BAT bouquet association table.

6. the method that in digital television system, realizes digital media advertisement according to claim 1 is characterized in that: when the every generation of the content of ad data once changes, then the version of BAT bouquet association table number is worth corresponding change once.

7. in digital television system, realize the device of digital media advertisement, comprising:

It is characterized in that, also comprise:

One system information generation module generates and the required various system business information table data of output digital television system operation advertising business, comprising:

By the plan of operation of current digit television system, distribute specific transactions numbering and Business Name to advertising business;

An and packing data module; By digital television system information source standard; Said system business information table data, XML index file and ad data are packaged as the transport stream structure data, and export to said data multiplex to said transport stream structure data and broadcast module.