CN100591104C - System and implementation method of one-way network webpage on-demand multimedia application - Google Patents

Abstract

The invention discloses a webpage on-demand multimedia application system of a one-way network, comprising a cable TV digital set-top box, an HFC network, an audio management server, a data editing and auditing server, and a data broadcasting server, the audio management server and the editing and auditing server The data broadcasting server is respectively connected to the data broadcasting server through its communication interface, and the data broadcasting server is connected to the cable TV digital set-top box through the HFC network through the broadcasting card; The algorithm is divided into several small segments with a certain playback sequence of file groups, and various web pages (including text and image information) are embedded with tags containing audio or video on-demand parameters to guide the receiving device to find the audio data files or KTV programs that need to be played. , or NVOD programs. The invention provides an expandable interactive platform for more cable TV value-added applications.

Description

System and implementation method of one-way network webpage on-demand multimedia application

technical field

The present invention relates to a webpage on-demand multimedia application system based on a one-way digital transmission network and its implementation method, in particular to a system based on a fiber-coaxial hybrid network (HFC) and a cable TV digital set-top box to order audio or video on a webpage and The playing method thereof belongs to the technical field of digital television.

Background technique

Due to the single function of current data broadcasting, which can only browse text and pictures, the most advantageous audio and video resources of TV media cannot be used, and operators cannot obtain profits in actual operation. The invention provides a system and a realization method for ordering multimedia applications through webpages in a one-way digital network environment of cable TV. It solves the problem that in the one-way digital transmission network environment, the digital set-top box realizes the function of instant on-demand audio and video programs by analyzing specific tags in the webpage, such as KTV song programs, educational audio and video programs, NVOD quasi-video-on-demand programs, etc. The invention expands the data broadcasting function from a single flat information browsing function to an interactive multimedia application function rich in sound and emotion, and provides a practical and expandable interactive application platform for various value-added applications of the cable television network. It is beneficial to attract more users to join the camp of digital TV, thereby promoting the rapid development of digital TV.

Contents of the invention

The object of the present invention is to provide a kind of under the one-way digital transmission network environment, the user is in the state of pure webpage browsing (when simply receiving and displaying various webpages and text pictures) or ETV state (receiving and displaying information related to digital television while watching digital TV) Additional information on various webpages and text pictures related to TV programs, or receiving and displaying digital TV programs related to webpages while displaying webpages and text pictures) When browsing text and picture information on webpages, it can be ordered by analyzing specific tags in the webpage Audio and video programs, such as KTV song programs, educational audio and video programs, entertainment programs or NVOD quasi-video-on-demand programs, etc. The system includes:

Program sending equipment: used to send webpage information (including text and picture content) and specific audio program streams and video program streams that conform to the W3C standard format to digital set-top boxes through a one-way digital transmission network, such as specific audio programs, KTV songs or educational programs, entertainment programs, NVOD programs.

Program receiving device: used to search and receive the web pages sent by various program sending devices through the unidirectional digital transmission network and the above audio and video programs sent by the program sending device through the specific label on-demand link in the web page.

It is characterized in that the audio data is managed as a file, and the program transmission device uses a specific algorithm to divide the audio program data, configures the divided data blocks for broadcasting with different bandwidths, and simultaneously broadcasts links tags related to audio or video programs information page. The program receiving device receives and parses the web pages containing audio and video program link tags, and realizes the functions of users to order audio programs and play video programs in real time, such as: KTV song program on demand, educational audio program on demand, NVOD quasi video on demand program playback, etc.

Program sending equipment includes:

Audio management server: used to store and configure audio program data divided according to specific algorithms, lyrics or speech scripts related to audio program content, background video shared by audio programs, etc.

Data editing and review server: used to edit and review the text and picture information content of various web pages that conform to the W3C standard format, as well as the link tags that can order the above-mentioned specific audio and video programs in the web pages;

ETV management server: used for editing, reviewing and broadcasting configuration of additional web page information content related to digital TV programs and link tags for ordering the above-mentioned specific audio and video programs in the web page.

Data broadcast server: used to send various webpages conforming to the W3C standard format issued by the data editing review server or ETV management server, or multiple divided audio program data issued by the audio management server, lyrics related to the content of the audio program or Speech scripts, background videos shared by audio programs, etc. are transmitted to the cable TV digital set-top box through the broadcast card through the HFC network carousel.

Program receiving equipment includes:

Cable TV digital set-top box: in web browsing state (when simply receiving and displaying various web pages and text pictures) or ETV state (receiving and displaying various web pages, text pictures and additional information related to digital TV programs while watching digital TV, or Receive and display digital TV programs related to the webpage while displaying webpages and text pictures), analyze the webpage link tags of audio or video programs ordered by users, (1) immediately receive and cache the audio requested by users when audio programs are ordered Program data; when the first part of the audio data is cached, the set-top box decodes the audio program and starts playing, while continuing to cache and play the remaining audio data until the audio file is cached and played to ensure the continuity of audio playback. In addition, if KTV or educational audio programs are on demand, on the basis of the above-mentioned audio cache playback, the lyrics or speech scripts and the shared background video are superimposed and displayed, and the synchronization of the lyrics or speech script display information with the audio program or speech sounds is ensured. (2) When ordering a video program, stop playing the current video program and lock the signal of the video program requested by the user according to the parameter information in the web page link label and play it in the video window in the current web page or in full screen.

The object of the present invention also provides a kind of realization method of the webpage on-demand multimedia application of one-way network, comprising:

Program sending step: used to send web page information (including text and picture content) and audio and video program streams conforming to the W3C standard format to the digital set-top box through the one-way digital transmission network;

The program receiving step is used to search and receive various webpages (including text and picture information) through the one-way digital transmission network, and to order audio and video programs sent by the sending device through specific tags in the webpage, such as: KTV song programs, educational programs, etc. Audio and video programs, NVOD quasi-video-on-demand programs, etc.

It is characterized in that the program transmission device uses a specific algorithm to divide the audio program data, configures the divided data blocks for broadcasting with different bandwidths, and simultaneously broadcasts webpages containing link label information related to audio and video programs. The program receiving device receives and parses the web pages containing audio and video program link tags, and realizes the functions of users to order audio programs and play video programs in real time, such as: KTV song program on demand, educational audio program on demand, NVOD quasi video on demand program playback, etc.

The program delivery steps include:

Audio management step: storing and configuring audio program data divided according to specific algorithms, lyrics or speech scripts related to audio program content, background video shared by audio programs, etc.

Data editing and auditing steps: Editing and auditing the text and picture information content of various web pages that conform to the W3C standard format, as well as the link tags that can order the above-mentioned specific audio and video programs in the web pages.

Data broadcasting step: It is used to transmit various webpages conforming to the W3C standard format issued by the data editing and review server or ETV management server, or multiple divided audio program data sent by the audio management server through the broadcast card through the HFC network. to the cable digital set-top box.

The program receiving steps include:

Program receiving steps: in web browsing state (when simply receiving and displaying various web pages and text pictures) or ETV state (receiving and displaying various web pages and text picture additional information related to digital TV programs while watching digital TV, or in Receive and display digital TV programs related to the webpage while displaying webpages and text pictures), analyze the webpage link tags of the audio or video programs ordered by users, (1) immediately receive and cache the audio programs ordered by users when ordering audio programs Data; after the first part of the audio data is buffered, the set-top box decodes the audio program and starts playing, while continuing to buffer and play the remaining audio data until the audio file is buffered and played to ensure the continuity of audio playback. In addition, when ordering KTV or educational audio programs, on the basis of the above-mentioned audio cache playback, it is necessary to receive and display lyrics or speech scripts and share background videos, and at the same time ensure that the display information of lyrics or speech scripts is synchronized with the audio program or speech sound . (2) When ordering a video program, stop playing the current video program and lock the signal of the video program requested by the user according to the parameter information in the web page link label and play it in the video window in the current web page or in full screen.

Description of drawings

The present invention will be described in further detail below in conjunction with embodiment and accompanying drawing:

Fig. 1 is a system structure block diagram in the embodiment of the present invention;

Fig. 2 is a pure web page browsing state set-top box software flow diagram in the embodiment of the present invention;

Fig. 3 is a block diagram of the software flow of the ETV browsing state set-top box in the embodiment of the present invention;

Detailed ways

Figures 1 to 3 show an embodiment of a one-way network webpage on-demand multimedia application system and its implementation method in the present invention.

A webpage on-demand multimedia application system of a kind of one-way network of the present embodiment is as shown in Figure 1: comprises cable television digital set-top box, HFC network, data editing audit server, audio frequency management server, ETV management server, data broadcast server and cable station Broadcast digital TV program stream and NVOD quasi-video-on-demand program stream. Among them, the data editing audit server and the audio management server are respectively connected with their respective data broadcast servers through their communication interfaces. The data broadcast server outputs data through the DVB broadcast card and transmits it to the cable TV digital set-top box through the HFC network; the ETV management server passes through Its communication interface is connected to the data broadcast server via a multiplexer, and after multiplexing with the digital TV program stream broadcasted by the cable station and the NVOD quasi-video-on-demand program stream, it is transmitted to the digital set-top box through the HFC network.

Cable TV digital set-top boxes support applications based on one-way broadcasting and various two-way backhaul (optional). Cable TV digital set-top boxes have low RAM configuration requirements and do not need hard disks to store programs locally. TVs or other terminal devices are used as A display device for receiving digital television signals. The basic function of the cable TV digital set-top box is to receive and decode digital TV broadcasting. The tuning module receives the radio frequency signal and down-converts it to an intermediate frequency signal, then performs A/D conversion into a digital signal, and then sends it to the demodulation module for QAM demodulation, and outputs MPEG Transport Stream serial or parallel data. The demultiplexing module receives the MPEG transport stream and extracts the PES data of a program, including video PES and audio PES. The demultiplexing module includes a descrambling engine, which can descramble the scrambled data at the transport stream layer and PES layer. The video PES is sent to the video decoding module to decode the MEPG video data, and then output to the PAL/NTSC encoder, encoded into an analog TV signal, and then output through the video output circuit. The audio PES is sent to the audio decoding module to decode the MPEG audio data, output the PCM audio data to the PCM decoder, and the PCM decoder outputs stereo or multi-channel analog audio signals, which are output through the audio output circuit.

The audio management server is used to store and configure the audio program data segmented according to a specific algorithm, the lyrics or speech scripts related to the audio program content, the background video shared by the audio program, etc. And the carousel configuration management of the data broadcast server. Its hardware configuration is as follows:

Minimum configuration recommended configuration CPU Above P42.0G The higher the main frequency, the better Memory More than 512M 1G hard drive More than 120G More than 120G network 100M network card 100M network card or more operating system Linux 7.3 or above database POSTGRE

Audio Management Server includes the following modules:

1) User rights management module, that is, audio program data, lyrics or speech scripts related to the content of audio programs, background video shared by audio programs, and user rights management for playback;

2) Video program management module, which is used for the management of program background video files;

3) The program management and scheduling module adopts the audio segmentation algorithm to segment the corresponding audio files and allocate corresponding bandwidth according to the algorithm; generate program playback configuration files and audio program data, lyrics or speech scripts and audio files related to the audio program content The background video shared by the program is transmitted to the data broadcast server.

4) The data broadcast server management module, which is used to manage the carousel configuration of the data broadcast server;

The data editing and auditing server is used for editing and auditing the text and picture information content of various web pages conforming to the W3C standard format, as well as the link tags in the web pages that can order the above-mentioned specific audio and video programs; and the carousel configuration management of the data broadcast server. Its hardware configuration is as follows:

Minimum configuration recommended configuration CPU P43.0C The higher the main frequency, the better Memory 512M 1GB hard drive More than 2G remaining space 120G network 100M network card 100M network card or above operating system Windows 2000Windows XP

database mysql-5.0.4-beta-win32

The Data Editing Review Server includes the following modules:

1) User rights management module, that is, user rights management for editing, reviewing, and playing various web pages that conform to the W3C standard format;

2) Data editing and auditing module, which is used to edit and audit the text and picture information content of various web pages conforming to the W3C standard format, as well as the link tags that can order the above-mentioned specific audio and video programs in the web pages;

3) The data broadcast server management module, which is used to manage the carousel configuration of the data broadcast server;

The ETV management server is used to edit and review the additional webpage information related to digital TV programs and the link label content of the above-mentioned specific audio and video programs that can be ordered on the webpage; and the carousel configuration management of the data broadcast server, and its hardware configuration is as follows :

Minimum configuration recommended configuration CPU P43.0C The higher the main frequency, the better Memory 512M 1GB hard drive More than 2G remaining space 120G network 100M network card 100M network card or more operating system Windows or LINUX database MSSQL 2000+SP3

The ETV management server includes the following modules:

1) User rights management module, that is, user rights management for editing, reviewing, and playing web pages with various digital TV additional information conforming to the W3C standard format;

2) Data editing and auditing module, which is used for editing and auditing the web page content of the digital TV additional information conforming to the W3C standard format;

3) The data broadcast server management module, which is used to manage the carousel configuration of the data broadcast server;

The data broadcast server is used to send various webpages in conformity with the W3C standard format issued by the data editing and review server or the ETV management server, multiple audio data file groups issued by the audio management server, lyrics or speech scripts related to the audio program content, The background video shared by the audio program is transmitted to the cable TV digital set-top box through the HFC network through the broadcast card, and its hardware configuration is as follows:

Minimum configuration recommended configuration CPU P43.0G The higher the main frequency, the better Memory 512M 1G hard drive More than 1G remaining space 120G operating system Windows 2000Windows XP network 100M network card 100M network card or above broadcast card Such as MediaPump XL 503 card

The broadcast card of the data broadcast server has the DVB data broadcast standard format and supports four transmission methods defined by DVB: Data Pipe, Data Stream, Multiple Protocol Encapsulation, and Data/Object Carousel (Data/Object Carousel).

A method for realizing a webpage on-demand multimedia application of a one-way network of the present embodiment comprises the following steps:

1) Create song audio files, lyrics files or speeches, and web pages (including text and pictures) that conform to the W3C standard format.

The user converts song programs or speech sound files in different audio data formats into Mp2 or Mp1 data format through the song production tool and saves them. The supported audio data formats include CD, MP3, WMA, WAV, RAW and other audio formats. . According to the rhythm of the song, the user can manually or automatically convert the input lyric text or speech into a lyric file in the karaoke lyric data format, thereby ensuring that the lyrics or speech can be displayed on the cable TV digital set-top box. Match the playback progress of songs or speech voices; select video files as the background of KTV songs or educational programs.

Use webpage design and typesetting software (such as: dreamweaver, photoshop, firework) to produce various webpage text and picture content that conforms to the W3C standard format, and set link tags for audio or video programs that require users to order on the webpage;

2) Input the audio program data, lyrics or speeches related to the content of the audio program, and the shared background video of the audio program to the audio management server, and use the audio segmentation algorithm to input the corresponding audio files through the audio management server program management scheduling module Divide and allocate the corresponding bandwidth according to the algorithm; generate program playback configuration files and audio program data, and transmit the lyrics or speech scripts related to the content of the audio program, and the background video shared by the audio program to the data broadcast server, and transmit them via the HFC network through the broadcast card to a cable TV digital set-top box.

3) Send the text and picture information content of various webpages conforming to the W3C standard format prepared in step 1 and the link labels that can order the above-mentioned specific audio and video programs in the webpage; It is transmitted to the cable TV digital set-top box through the HFC network.

4) the text picture information content of the webpage of the ETV program additional information that step 1 makes and the link label that can order above-mentioned specific audio and video program in the webpage; After checking and checking, send to the data broadcast server, through the multiplexer and the TV station The broadcasted digital TV programs or NVOD quasi-video-on-demand program streams are mixed and then transmitted to the cable TV digital set-top box through the HFC network.

5) STB receiving steps:

A. In the state of webpage browsing (when simply receiving and displaying various webpages and text pictures) as shown in Figure 2:

The set-top box parses the web page link tags of audio or video programs ordered by users,

When an audio program is requested, immediately receive and buffer the audio program data requested by the user; after the first part of the audio data is buffered, the set-top box decodes the audio program and starts playing, while continuing to buffer and play the remaining audio data until it is buffered and After the audio file is played, the continuity of the audio playback is guaranteed.

When ordering KTV songs or educational audio programs, on the basis of the above-mentioned audio cache playback, it is necessary to receive and display lyrics or speeches and share background videos, while ensuring that the lyrics or speeches are synchronized with the audio program.

When ordering an NVOD program, search for the selected NVOD program according to the link parameter label embedded in the webpage. After finding it, jump to the specified channel to play the video program; stop playing the current video program and follow the parameter information in the webpage link label Lock the signal of the video program requested by the user and play it in a small video window on the current web page or decode and play it in full screen.

B in the ETV state (receiving and displaying various webpages and text and picture additional information related to digital TV programs while watching digital TV, or receiving and displaying digital TV programs related to webpages while displaying webpages and text pictures) such as As shown in accompanying drawing 3:

Receive and play digital TV programs, and automatically search for relevant additional information. After additional information is queried, it will display additional information prompts (can be used for interstitial advertising pages or other prompt signs)

On-demand additional information, the set-top box receives and displays the webpage of additional information conforming to the W3C standard format;

Order and play audio data, KTV songs or educational audio programs from the webpage of additional information, and the steps of digital TV or NVOD programs are the same as those described by A in the webpage browsing state. Use the same method to receive and play the audio data file to replace the digital TV audio at that time, or use the same method to receive and skip to play KTV songs or educational audio programs, receive and skip to play NVOD programs.

A kind of webpage on-demand multimedia application system of one-way network that the present invention provides, comprises cable TV digital set-top box and HFC network, also comprises " transmission device ", promptly following server or module (each server can be installed on the physical server of independence respectively , can also be used as a module to share one or several physical servers):

1) Audio management server, which is used to store and configure multiple segments of audio data file groups divided into several small segments according to a certain algorithm, lyrics or speech scripts related to audio program content, background video shared by audio programs, etc., and Carousel management for data broadcast servers connected to audio servers.

2) Data editing and review server, which is used to edit and review the text and picture information content of various web pages conforming to the W3C standard format, as well as the link tags that can order the above-mentioned specific audio and video programs in the web pages; and the data connected to the editing and review server Carousel management for broadcast servers.

3) ETV management server, which is used to edit and review the additional web page information content related to digital TV programs and the link tags that can order the above-mentioned specific audio and video programs in the web page; and the wheel of the data broadcast server connected to the ETV management server broadcast management.

4) Data broadcast server (also called data broadcast server), which is used to send various webpages conforming to the W3C standard format issued by the data editing and review server or ETV management server, or multiple divided audio programs issued by the audio management server Data, lyrics or speeches related to the content of the audio program, background video shared by the audio program, etc. are transmitted to the cable TV digital set-top box through the broadcast card through the HFC network carousel.

One, the audio management server of the present invention, the data editing review server, the NVOD management server are respectively connected with the data broadcast server respectively by its communication interface, and the data broadcast server is connected to the cable TV digital set-top box through the HFC network by the broadcast card . The ETV management server is connected with the data broadcast server through its communication interface, and connected to the digital TV set-top box of cable TV with the HFC network after being multiplexed with the digital TV program stream or NVOD program stream through the broadcast card.

Two, the digital set-top box of the present invention supports based on the one-way broadcast transmission medium (and supports the two-way network (optional) that backhaul is arranged, comprises PSTN, ISDN, ADSL, SADSL, Ethernet, Cable Modem, GSM, various 3G , CDMA and other two-way network) applications realized. The RAM configuration requirements of the digital set-top box are low, and there is no need for a hard disk to store programs locally, and a TV or other terminal devices are used as display devices to receive digital TV signals.

3. The audio management server includes the following modules,

1) User rights management module, that is, audio program data, lyrics or speech scripts related to the content of audio programs, background video shared by audio programs, and user rights management for playback;

2) Video program management module, which is used for the management of program background video files;

3) The program management and scheduling module adopts the audio segmentation algorithm to segment the corresponding audio files and allocate corresponding bandwidth according to the algorithm; generate program playback configuration files and audio program data, lyrics or speech scripts and audio files related to the audio program content The background video shared by the program is transmitted to the data broadcast server.

4) The data broadcast server management module, which is used to manage the carousel configuration of the data broadcast server;

5. The data editing review server includes the following modules,

1) User rights management module, that is, user rights management for editing, reviewing, and playing various web pages that conform to the W3C standard format;

2) Editing and auditing module, which is used to edit and audit the text and picture information content of various web pages conforming to the W3C standard format, as well as the link tags in the web pages that can order the above-mentioned specific audio and video programs;

3) The data broadcast server management module, which is used to manage the carousel configuration of the data broadcast server;

Six, the digital set-top box receives and obtains various webpages conforming to the W3C standard format, and parses the webpage link label of the audio or video program requested by the user, (1) immediately receives and buffers the audio program requested by the user when the audio program is requested Data; after the first part of the audio data is buffered, the set-top box decodes the audio program and starts playing, while continuing to buffer and play the remaining audio data until the audio file is buffered and played to ensure the continuity of audio playback. In addition, if KTV or educational audio programs are ordered, on the basis of the above-mentioned audio cache playback, it is necessary to receive and display lyrics or speeches and share background videos, while ensuring that the lyrics or speeches are synchronized with the audio program. (2) When ordering a video program, stop playing the current video program and lock the signal of the video program requested by the user according to the parameter information in the web page link label and play it in the video window in the current web page or in full screen.

Seven, a set of multimedia on-demand system of the present invention comprises, data broadcasting server can be one or more, audio frequency management server one, data editing and auditing server one, ETV management server one, each data broadcasting The servers are respectively connected to the servers to which they belong.

Eight, in order to detect whether the user has the right to use, the present invention can also include a conditional receiving device for encrypting the transport stream sent by the data broadcast server. Set-top box connection. The transmission stream sent by the data broadcast server is encrypted by a conditional access device (CA such as Irdeto, Zhongshilian, Yongxin Tongfang, Conax, NDS, Canal+, Nagra, etc.), and then transmitted to a digital set-top box. The set-top box detects whether the user is authorized. If Already authorized, then decrypt to obtain audio or video data.

In addition, the system also provides an encryption method for the source data. After the receiving device detects that the user is authorized, it uses the corresponding decryption algorithm to decrypt.

Nine, the playing method of the audio or video-on-demand system based on the one-way digital transmission network provided by the present invention, comprises the following steps:

1) Create song audio files, lyrics files or speeches, and web pages (including text and pictures) that conform to the W3C standard format.

The user converts song programs or speech sound files in different audio data formats into Mp2 or Mp1 data format through the song production tool and saves them. The supported audio data formats include CD, MP3, WMA, WAV, RAW and other audio formats. . According to the rhythm of the song, the user can manually or automatically convert the input lyric text or speech into a lyric file in the karaoke lyric data format, thereby ensuring that the lyrics or speech can be displayed on the cable TV digital set-top box. Match the playback progress of songs or speech voices; select video files as the background of KTV songs or educational programs.

Use webpage design and typesetting software (such as: dreamweaver, photoshop, firework) to produce various webpage text and picture content that conforms to the W3C standard format, and set link tags for audio or video programs that require users to order on the webpage;

2) Input the audio program data, lyrics or speeches related to the content of the audio program, and the shared background video of the audio program to the audio management server, and use the audio segmentation algorithm to input the corresponding audio files through the audio management server program management scheduling module Divide and allocate the corresponding bandwidth according to the algorithm; generate program playback configuration files and audio program data, and transmit the lyrics or speech scripts related to the content of the audio program, and the background video shared by the audio program to the data broadcast server, and transmit them via the HFC network through the broadcast card to a cable TV digital set-top box.

3) The text and picture information content of various web pages conforming to the W3C standard format prepared in step 1, and the link labels of the above-mentioned specific audio and video programs that can be ordered on the web page; after being verified by the data editing and review server, send it to the data broadcasting The server is transmitted to the cable TV digital set-top box through the HFC network through the broadcast card.

4) the text picture information content of the webpage of the ETV program additional information that step 1 makes and the link label that can order above-mentioned specific audio and video program in the webpage; After checking and checking, send to the data broadcast server, through the multiplexer and the TV station The broadcasted digital TV programs or NVOD quasi-video-on-demand program streams are mixed and then transmitted to the cable TV digital set-top box through the HFC network.

5) The digital set-top box analyzes the web page link tags of the audio or video programs requested by the user, receives, codes and plays the audio and video programs sent by the sending device, such as: KTV songs, educational audio, NVOD quasi-video-on-demand programs, etc.;

When an audio program is requested, immediately receive and buffer the audio program data requested by the user; after the first part of the audio data is buffered, the set-top box decodes the audio program and starts playing, while continuing to buffer and play the remaining audio data until it is buffered and After the audio file is played, the continuity of the audio playback is guaranteed.

When ordering KTV songs or educational audio programs, on the basis of the above-mentioned audio cache playback, it is necessary to receive and display lyrics or speeches and share background videos, while ensuring that the lyrics or speeches are synchronized with the audio program.

When ordering an NVOD program, search for the selected NVOD program according to the link parameter label embedded in the webpage. After finding it, jump to the specified channel to play the video program; stop playing the current video program and follow the parameter information in the webpage link label Lock the signal of the video program requested by the user and play it in a small video window on the current web page or decode and play it in full screen.

The present invention has the following beneficial effects:

(1) The present invention expands data broadcasting from a single flat information browsing function to an interactive multimedia application function full of voice and emotion, and users can order specific audio data, KTV songs, educational Multimedia application functions such as playing similar programs or NVOD quasi-video-on-demand programs.

(2) The system of the present invention has few hardware configurations and simple and convenient connection methods.

(3) The present invention adopts the method of segmenting audio files and allocating corresponding bandwidth according to the algorithm, and carrying out carousel configuration to the data broadcast server, which is convenient for cable TV digital set-top boxes to cache audio data, and makes the user wait for the shortest time for playing.

(4) Provide a practical and scalable interactive connection platform for various value-added applications of unidirectional digital transmission network.

Standard description:

MP1: MPEG1 Layer-I

MP2: MPEG1 Layer-II

MP3: MPEG1 Layer-III

MP4: MPEG-4 Audio

MPEG1 Video (ISO/IEC 11172-2)

MPEG2 Video (ISO/IEC 13818-2)

MPEG1 Audio (ISO/IEC 11172-3)

MPEG2 Audio (ISO/IEC 13818-3)

MP4-SA: MPEG-4 Structured Audio

Claims (9)

1. A system of webpage on-demand multimedia application of a unidirectional network, comprising: Program sending equipment: used to send webpage information (including text and picture content) and specific audio program streams and video program streams that conform to the W3C standard format to digital set-top boxes through a one-way digital transmission network, such as specific audio programs, KTV songs or educational programs, entertainment programs, NVOD programs; Program receiving device: used to search and receive the web pages sent by various program sending devices through the one-way digital transmission network and the above-mentioned audio and video programs sent by the program sending device through the specific label on-demand link in the web page; It is characterized in that the program sending equipment includes at least: Audio management server; used to store and configure multi-segment audio files divided into several small audio data file groups according to a certain algorithm; or KTV songs or educational programs that superimpose a section of lyrics or speech on the same audio and share the video background, entertainment show; Data editing and auditing server: used to edit and audit webpage content conforming to the W3C standard format and expand to a certain extent, as well as link tags that can be hyperlinked to the above-mentioned specific audio programs, KTV songs or educational programs, entertainment programs, and NVOD programs on-demand in the web pages ; Data broadcast server: used for the above-mentioned multiple audio data file groups, KTV songs or educational programs and entertainment programs sent by the above-mentioned various webpages sent by the data editing and auditing server, the audio management server, and pre-set each file according to an algorithm respectively. Allocate the corresponding bandwidth, and transmit it to the program receiving device through the one-way digital transmission network carousel; The program receiving equipment includes at least: Digital set-top box: running in the following two states, (1) web browsing state (that is, simply receiving and displaying various web pages and text pictures), (2) ETV state, (that is, receiving while watching digital TV, and manually Or the front-end control automatically enters and displays the above-mentioned various webpages and additional information related to digital TV programs at a specific time; or receives and displays digital TV programs related to webpages while displaying webpages and text pictures); can immediately The web page link tags of the audio or video programs ordered by the user are analyzed, and the multimedia programs ordered by the user are received, cached and played. 2. The system of webpage-on-demand multimedia applications as claimed in claim 1, wherein the audio management server automatically converts the audio files corresponding to each webpage or KTV songs or educational classes with video backgrounds according to the segmentation algorithm of audio files. The audio file of the program is divided into several small segments, which is convenient for the digital set-top box to buffer the audio data; Pre-allocate the corresponding bandwidth to each segment according to the segmentation algorithm; within the independent bandwidth, simultaneously send and rotate the audio file group or KTV songs or educational programs with lyrics or speeches and shared video background Each small segment of each segment, so as to realize the optimal transmission of data, so that the user waits for the shortest time to play the audio. 3. The system of webpage on-demand multimedia application as claimed in claim 1, characterized in that, the audio data is managed in a documented form, and the audio data file can be in MP1, MP2 or MPEG2 Audio format, and also includes CD, MP3 that supports conversion , MP4, MP4-SA, WMA, WAV, Real, RAW audio formats; in addition, the sending device can directly send MP3, MP4, Real, WMA and other audio formats without conversion; the program receiving device receives these audio format files After that, you can directly decode and play the sounds or audio programs in these audio formats, or convert the songs in these audio formats to MP1, MP2 or MPEG2 Audio audio format and then decode and play them. 4. The system for web page-on-demand multimedia applications as claimed in claim 1, wherein said one-way digital transmission system is the sky transmission system of DVB-S system, DVB-T system, or digital TV DVB-C on the HFC network system; this system can also be used for two-way transmission networks of PSTN, ISDN, ADSL, SADSL, Ethernet, Cable Modem, GSM, 3G, and CDMA; the program receiving device is a two-way or one-way digital set-top box, supporting DVB-C or DVB- S or DVB-T or Ethernet. 5. The system for on-demand multimedia application according to claim 1, characterized in that there can be one or more data broadcast servers. 6. A method for webpage on-demand multimedia application of a unidirectional network, comprising the following steps: Program sending steps: Send web page information (including text and picture content) and specific audio program streams and video program streams that conform to the W3C standard format to the digital set-top box through the one-way digital transmission network in a carousel manner, such as specific audio program streams. programs, KTV songs or educational programs, entertainment programs, NVOD programs; Program receiving step: search and receive the webpages sent by various program sending devices through the one-way digital transmission network and the above-mentioned audio and video programs sent by the program sending device through the specific label on-demand link in the webpage; It is characterized in that the program sending step at least includes: Audio management step: store and configure multi-segment audio files divided into several small audio data file groups according to a certain algorithm; or superimpose a section of lyrics or speech on the same audio and share video background KTV songs or educational programs and entertainment programs ; Data editing and review steps: editing and reviewing the content of the webpage that conforms to the W3C standard format and has been expanded to a certain extent, as well as the link tags in the webpage that can be hyperlinked to the above-mentioned specific audio programs, KTV songs or educational programs, entertainment programs, and NVOD programs on demand; Data broadcasting step: the above-mentioned various webpages sent by the data editing review server, the above-mentioned multiple audio data file groups, KTV songs or educational programs, and entertainment programs sent by the audio management server are respectively pre-allocated corresponding to each file according to the algorithm. The bandwidth is transmitted to the program receiving equipment through the one-way digital transmission network carousel; The program receiving step includes at least: Program receiving steps: the digital set-top box operates in the following two states, (1) web page browsing state (i.e. simply receiving and displaying various web pages and text pictures), (2) ETV state (i.e. receiving while watching digital TV, and Manually by the user or controlled by the front end to automatically enter and display the above-mentioned various webpages and additional information on text and pictures related to digital TV programs at a specific time; or receive and display digital TV programs related to web pages while displaying web pages and text pictures) ; Analyze the webpage link label of the audio or video program requested by the user, (1) immediately receive and buffer the audio program data requested by the user when the audio program is requested; after the first part of the audio data has been buffered, the set-top box decodes the audio program and Start playing, and continue to buffer and play the remaining audio data at the same time until the audio file is buffered and played to ensure the continuity of audio playback; in addition, if KTV or educational audio programs are on demand, on the basis of the above audio buffer playback, superimpose And display the lyrics or speech and share the background video, while ensuring the synchronization of the lyrics or speech information with the audio program or speech sound. (2) When ordering a video program, stop playing the current video program and lock the signal of the video program requested by the user according to the parameter information in the web page link label and play it in the video window in the current web page or in full screen. 7. The method for webpage-on-demand multimedia applications as claimed in claim 6, characterized in that, in the audio management step, according to the segmentation algorithm of audio files, the audio files corresponding to each webpage or the audio files with video backgrounds are automatically The audio files of KTV songs or educational programs are divided into several small segments, which is convenient for cable TV digital set-top boxes to cache audio data; Pre-allocate the corresponding bandwidth to each segment according to the segmentation algorithm; within the independent bandwidth, simultaneously send and rotate the audio file group or KTV songs or educational programs with lyrics or speeches and shared video background Each small segment of each segment, so as to realize the optimal transmission of data, so that the user waits for the shortest time to play the audio. 8. The method for webpage-on-demand multimedia applications as claimed in claim 6, wherein the audio data is managed in a documented form, and the data file format can be the data format of MP1, MP2 or MPEG2 Audio, and also includes support for conversion CD, MP3, MP4, MP4-SA, WMA, WAV, Real, RAW audio formats; in addition, the sending device can directly send MP3, MP4, Real, WMA and other audio formats without conversion; the program receiving device receives these After the audio format files, you can directly decode and play the sounds or audio programs in these audio formats, or convert the songs in these audio formats into MP1, MP2 or MPEG2 Audio audio format songs according to your needs and then decode and play them. 9. The method for webpage on-demand multimedia applications as claimed in claim 6, wherein said one-way digital transmission system is a DVB-S system, a sky transmission system of a DVB-T system, or a digital TV DVB- C system; this method can also be used in the two-way transmission system of PSTN, ISDN, ADSL, SADSL, Ethernet, Cable Modem, GSM, 3G, CDMA, and described program receiving step supports DVB-C or DVB-S or DVB-T or Ethernet .

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