CN102045588A - Digital TV (television) advertisement and VOD (video on demand) integrated system - Google Patents
Digital TV (television) advertisement and VOD (video on demand) integrated system Download PDFInfo
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Abstract
The invention discloses a digital TV (television) advertisement and VOD (video on demand) integrated system. The system comprises a satellite TV or cable TV receiver, a TS (transport stream) encoder, a subtitle processing module, a multiplexer, a QAM (quadrature amplitude modulation), a mixer, a user terminal and a digital VOD device. In the invention, the TS encoder and the subtitle processing module process signals so that convenience area advertisements and self-made programs can be inserted at will; and the digital VOD device optimizes channel selection to filter the programs which a user does not watch at all. The system preferably integrates the TS encoder, the subtitle processing module and the digital VOD device based on the traditional VOD system, and is a perfect solution for digital TV advertisement and VOD integration.
Description
Technical field
The present invention relates to digital TV field, relate in particular to a kind of digital television advertisement video program request integrated system.
Background technology
VOD is the abbreviation of Video On Demand, i.e. the meaning of video request program.The extensive use in existing life of VOD system is as hotel, hotel, Saunas, foot care, rental house, factory's dormitory, public place of entertainment, family etc.
Existing video on-demand system is passive receiving information, to the near zone shopping that the client wants to understand, and food and drink, amusement, the inquiry of can not following one's inclinations of convenience-for-people information such as tourism, it is relatively more difficult to obtain these instant messages.Therefore, be badly in need of a kind of convenience-for-people digital television advertisement system that utilizes existing digital television system for the basis.
The Chinese invention patent application number is: " 200810249722.5 ", and denomination of invention is: disclose video on-demand system in the patent application document of " a kind of video on-demand system " and comprised: central server is used for store video information; Node server is used for establishing a communications link to obtain to the described video information of small part and according to this video information generation the rendition list by network and described central server; User terminal is used to read described the rendition list and shows by display device; After user's program request respective program, it sends order request to described node server, and plays by described display device after reading corresponding video-information decoding.
Though above-mentioned patent has been set up the VOD system Operation Network that node server and central server and user terminal are formed, there is following shortcoming in it:
The first, user's channel selection is not optimized, and can not filter out the program that the user does not see;
The second, can not when not influencing normal program and watch, freely insert convenience-for-people regional advertisement;
Three, can not insert some according to user's demand and manage program by oneself.
Summary of the invention
The technical problem that the present invention mainly solves provides a kind ofly can insert regional convenience-for-people advertisement, insert the digital television advertisement video program request integrated system manage program by oneself, to make things convenient for user's channel selection.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of digital television advertisement video program request integrated system is provided, comprises satellite television or cable television receiver, TS stream encoder, captions processing module, multiplexer, QAM modulator, blender, user terminal and ordering digital video by short message device; Satellite television or cable television receiver output connect the first input end of captions processing module, TS stream encoder output connects second input of captions processing module, the input of the output connection multiplexing device of captions processing module, multiplexer output terminal connects the input of QAM modulator, the output of QAM modulator connects the first input end of blender, the output of ordering digital video by short message device connects second input of blender, the output of blender connects the input of user terminal, and the output of user terminal connects the input of ordering digital video by short message device; Satellite television or cable television receiver are used for the received signal source; The TS stream encoder is used for insertion and the insertion of convenience-for-people video-audio signal that the user manages program by oneself; The captions processing module is used for advertisement and cuts to broadcast with captions and insert; Multiplexer is used for code stream to be handled; The high frequency that the QAM modulator is used for baseband signal is moved appointment transmits; Blender is used for the radiofrequency signal of multichannel after ovennodulation is mixed into one tunnel output; User terminal is used for audio frequency and video text subtile decoding back and shows, and by the channel selection of ordering digital video by short message device; The ordering digital video by short message device is used to optimize channel selection and filter out the program that the user does not see.
Wherein, TS stream encoder, captions processing module, multiplexer, QAM modulator, user terminal and ordering digital video by short message device all have Ethernet interface, can make things convenient for long-range to the checking of equipment running status and running parameter, revise management be set etc.;
Wherein, described captions processing module comprises that TS stream captions planting machine, advertisement cut and broadcast device and film titler, described advertisement cuts broadcasts the intercepting that device is used for advertisement, described TS stream captions planting machine is used for the captions of film titler are inserted in the TS signal flow, and described film titler is used to TS stream captions planting machine that captions are provided.
Wherein, described multiplexer comprises ASI input module, input analysis module, TS filtering module, PSI/SI modified module, PID mapping block, PCR correction module, code check adjusting module and the ASI output module that is linked in sequence.
Wherein, described QAM modulator comprises ASI input module, code stream processing module, QAM modulation module, upconversion process module and the radio frequency output module that is linked in sequence, the data-signal of described multiplexer output is converted to TS stream through the ASI input module, become the medium-frequency IF signal after TS stream process code stream processing module and QAM modulation module are handled, after the upconversion process resume module, export by the radio frequency output module.
Wherein, described user terminal comprises set-top box and television set, and set-top box is used for decoding of audio frequency and video text subtile and channel selection, and the audio, video data after the set top box decodes shows by television set.
Wherein, described blender adopts radio frequency network to communicate by letter with user terminal, and described radio frequency network is the cable video network that public wire radio network or user are set up certainly.
Wherein, described user terminal and ordering digital video by short message device adopt ethernet communication.
The invention has the beneficial effects as follows: the video on-demand system that is different from prior art can not insert convenience-for-people regional advertisement and manage program by oneself, and the defective of can not filter user not seeing program, the present invention handles signal by TS stream encoder and captions processing module, can arbitrarily insert convenience-for-people regional advertisement and manage program by oneself, and filter out the program that the user does not see by the channel selection of ordering digital video by short message installation optimization.This system combines TS stream encoder, captions processing module and ordering digital video by short message device well on the basis of existing video on-demand system, be a kind of perfect digital television advertisement video program request integrative solution.
Description of drawings
Fig. 1 is the block diagram of digital television advertisement system embodiment of the present invention;
Fig. 2 is the operation principle block diagram of digital television advertisement system embodiment of the present invention;
Fig. 3 is the block diagram of multiplexer among the digital television advertisement system embodiment of the present invention;
Fig. 4 is the block diagram of QAM modulator among the digital television advertisement system embodiment of the present invention;
Fig. 5 is the operation principle block diagram of set-top box among the digital television advertisement system embodiment of the present invention.
Embodiment
By describing technology contents of the present invention, structural feature in detail, realized purpose and effect, give explanation below in conjunction with execution mode and conjunction with figs. are detailed.
QAM, Chinese means digital modulator, and English full name is: Quadrature Amplitude Modulation.
See also Fig. 1, among the digital television advertisement video program request integrated system embodiment of the present invention, described system comprises satellite television or cable television receiver 10, TS stream encoder 11, captions processing module 12, multiplexer 13, QAM modulator 14, blender 15, user terminal 16 and ordering digital video by short message device 17; Satellite television or cable television receiver 10 outputs connect the first input end of captions processing module 12, TS stream encoder 11 outputs connect second input of captions processing module 12, the input of the output connection multiplexing device 13 of captions processing module 12, multiplexer 13 outputs connect the input of QAM modulator 14, the output of QAM modulator 14 connects the first input end of blender 15, the output of ordering digital video by short message device 17 connects second input of blender 15, the output of blender 15 connects the input of user terminal 16, and the output of user terminal 16 connects the input of ordering digital video by short message device 17; Satellite television or cable television receiver 10 are used for the received signal source; TS stream encoder 11 is used for insertion and the insertion of convenience-for-people video-audio signal that the user manages program by oneself; Captions processing module 12 is used for advertisement and cuts to broadcast with captions and insert; Multiplexer 13 is used for code stream to be handled; The high frequency that QAM modulator 14 is used for baseband signal is moved appointment transmits; Blender 15 is used for the radiofrequency signal of multichannel after ovennodulation is mixed into one tunnel output; User terminal 16 is used for audio frequency and video text subtile decoding back and shows, and by the channel selection of ordering digital video by short message device; Ordering digital video by short message device 17 is used to optimize channel selection and filter out the program that the user does not see.
The video on-demand system that is different from prior art can not insert convenience-for-people regional advertisement and manage program by oneself, and the defective of can not filter user not seeing program, the present invention handles signal by TS stream encoder and captions processing module, can arbitrarily insert convenience-for-people regional advertisement and manage program by oneself, and filter out the program that the user does not see by the channel selection of ordering digital video by short message installation optimization.This system combines TS stream encoder, captions processing module and ordering digital video by short message device well on the basis of existing video on-demand system, be a kind of perfect digital television advertisement video program request integrative solution.
In one embodiment, described captions processing module comprises that TS stream captions planting machine, advertisement cut and broadcast device and film titler, described advertisement cuts broadcasts the intercepting that device is used for advertisement, described TS stream captions planting machine is used for the captions of film titler are inserted in the TS signal flow, and described film titler is used to TS stream captions planting machine that captions are provided.
In one embodiment, described multiplexer comprises ASI input module, input analysis module, TS filtering module, PSI/SI modified module, PID mapping block, PCR correction module, code check adjusting module and the ASI output module that is linked in sequence.
In one embodiment, described QAM modulator comprises ASI input module, code stream processing module, QAM modulation module, upconversion process module and the radio frequency output module that is linked in sequence, the data-signal of described multiplexer output is converted to TS stream through the ASI input module, become the medium-frequency IF signal after TS stream process code stream processing module and QAM modulation module are handled, after the upconversion process resume module, export by the radio frequency output module.
In one embodiment, described user terminal comprises set-top box and television set, and set-top box is used for decoding of audio frequency and video text subtile and channel selection, and the audio, video data after the set top box decodes shows by television set.
In one embodiment, described blender adopts radio frequency network to communicate by letter with user terminal, and described radio frequency network is the cable video network that public wire radio network or user are set up certainly.
In one embodiment, described user terminal and ordering digital video by short message device adopt ethernet communication.Common netting twine can be selected during ethernet communication, also optical fiber communication can be selected for use.
Referring to Fig. 2, Fig. 3, Fig. 4 and Fig. 5, in the concrete scheme of digital television advertisement video program request integrated system, satellite television or cable TV receiving system, TS stream encoder, TS stream captions planting machine, film titler, multiplexer, QAM modulator, blender, radio frequency network, subscriber computer top box and VOD VOD system have been comprised.
A, satellite television or cable TV receiving system:
Satellite digital television receiving system generally is made up of reception antenna (comprising feed), low noise block downconverter (tuner LNB) and satellite digital tv receiver three parts:
Wherein antenna, tuner claim outdoor unit;
Satellite digital tv receiver claims indoor unit, or title IRD (being IRD), be the crystallization that present age computer technology, digital communication technology and microelectric technique merge, typical IRD comprises: tuner, the second intermediate-freuqncy signal demodulation, channel-decoding, MPEG one 2 transmission flow demultiplexings, the decoding of MPEG one 2 audio/videos and simulation audio/video signal processing.The signal that satellite television receiving system can be received in system of the present invention is directly changed into and gives TS stream captions planting machine behind the serial ASI signal, and also the vision signal that satellite television can the be received video/audio signal that is decoded into simulation is given the TS stream encoder again and then given TS stream captions planting machine.
Cable TV receiving system: in fact be exactly to have detailed introduction below the subscriber computer top box.
B, TS stream encoder:
The TS stream encoder mainly can be divided into 4 partly on principle, be respectively that Video processing compression, Audio Processing are compressed, TS stream is multiplexing and the interface protocol conversion.
Video processing compression: to the video process video decode of input simulation, analog signal is become the digital baseband signal (A/D conversion) that meets ITU-R BT601/656 standard, enter then that pretreatment module is carried out denoising, time base correction is pending, enter the MPEG-2 compression module afterwards and compress, video TS stream becomes living.
The Audio Processing compression: the audio signal of input simulation is carried out analog digital conversion and volume processing, carry out compressed encoding afterwards, audio TS stream generates.
TS stream is multiplexing: with video/audio and data, multiplexing being in the same place of PSI/SI part.
Interface protocol conversion: be to change final TS circulation into need ASI signal.
C, TS stream captions planting machine:
TS stream is based on a kind of transport stream of the packed data of MPEG-2, the insertion of captions also no longer is the problem of a stack as analog machine, but in the additive process of whole captions, relate to demultiplexing, decoding, subtitle superposition, look all too many levels such as audio frequency is replaced, coding, GOP repack again, ES and TS are multiplexing again, it has been equivalent to finish the function of several headend equipments.And successfully solved present equipment and can only do single cutting and broadcast or captions intercut functional defect, having solved some equipment again will be through the quality decline problem of tradition broadcast or captions, even can carry out cutting of different content at each channel and broadcast with captions and intercut, be perfect integrative solution.
D, film titler:
Film titler and TS stream captions intercut, advertisement cuts and broadcasts device and form the complete advertisement of a cover and cut and broadcast the captions cut system.System comprises: TS numeral multichannel cuts broadcast system and TS numeral multichannel captions cut system.TS numeral multichannel cuts broadcast system and comprises: TS numeral multichannel cuts broadcast system, TS broadcasts record queries system and Subscriber Management System.TS numeral multichannel captions cut system comprises: Subscriber Management System, captions manufacturing system, captions cut system.So just can form the insertion function of advertisement.
E, multiplexer:
Multiplexer is the equipment of handling as a code stream on principle, is that the TS that meets the 13818-1 standard filters and multiple connection again, the relevant PSI/SI form of change.Multiplexing main purpose converts a plurality of SPTS (single-unit order code stream)/MPTS (Polymera code stream) MPTS to, can effectively improve the utilance of circuit exactly.
F, QAM modulator:
Be the digital modulation technique of amplitude and phase place Colaesce, the high frequency treatment that appointment is moved baseband signal in modulation exactly transmits.The basic task of digital modulation has two: first task is the same with the simulation modulation, is about to different program transmission signals and moves on the predetermined band, and it comes down to the process of a carrier wave coupling; Second task is a control transmission efficient.
G, blender:
The radiofrequency signal of multichannel after ovennodulation is mixed into one tunnel output.
H, radio frequency network:
Can be ready-made cable TV network, or user's wire radio network of controlling oneself and setting up.Radio frequency network comprises: coaxial cable, signal amplifier, branch distributor etc.
I, subscriber computer top box:
Digital radio signal enters the rf input interface of set-top box, i.e. tuner input.Tuner is mainly realized the reception and the demodulation of digital television signal, output TS stream.The set-top box master chip carries out operations such as demultiplexing, decoding to the TS stream that tuner provides, and exports to simulated television after the audio/video processing circuit processes in several audio/video signals process set-top box of decoding output.
FLASH, SDRAM (DDR SDRAM) cooperate the set-top box master chip to finish every function.The major function of front panel is to receive the input information of remote controller, front panel keys and be transferred to the set-top box master chip, pushes up main core with machine and finishes function corresponding according to input information, to realize the operation of user to set-top box.The IC-card card reader is generally all arranged in the set-top box, insert the broadcast that the general descrambling module of DVB in IC-card and the set-top box master chip is finished scrambled program together by the user in when work.Network interface: the input by remote control is passed to the VOD server with user's VOD IP Information On Demand by network interface.
J, VOD VOD system:
The VOD VOD system comprises video service system and library of programmes, is managing and is looking the storage of syllable purpose, and it is the program distribution center, response user request, and broadcast the equipment of request program automatically.
The above only is embodiments of the invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (7)
1. a digital television advertisement video program request integrated system is characterized in that: comprise satellite television or cable television receiver, TS stream encoder, captions processing module, multiplexer, QAM modulator, blender, user terminal and ordering digital video by short message device;
Satellite television or cable television receiver output connect the first input end of captions processing module, TS stream encoder output connects second input of captions processing module, the input of the output connection multiplexing device of captions processing module, multiplexer output terminal connects the input of QAM modulator, the output of QAM modulator connects the first input end of blender, the output of ordering digital video by short message device connects second input of blender, the output of blender connects the input of user terminal, and the output of user terminal connects the input of ordering digital video by short message device;
Satellite television or cable television receiver are used for the received signal source; The TS stream encoder is used for insertion and the insertion of convenience-for-people video-audio signal that the user manages program by oneself; The captions processing module is used for advertisement and cuts to broadcast with captions and insert; Multiplexer is used for code stream to be handled; The high frequency that the QAM modulator is used for baseband signal is moved appointment transmits; Blender is used for the radiofrequency signal of multichannel after ovennodulation is mixed into one tunnel output; User terminal is used for audio frequency and video text subtile decoding back and shows, and by the channel selection of ordering digital video by short message device; The ordering digital video by short message device is used to optimize channel selection and filter out the program that the user does not see.
2. digital television advertisement video program request integrated system according to claim 1, it is characterized in that: described captions processing module comprises that TS stream captions planting machine, advertisement cut and broadcast device and film titler, described advertisement cuts broadcasts the intercepting that device is used for advertisement, described TS stream captions planting machine is used for the captions of film titler are inserted in the TS signal flow, and described film titler is used to TS stream captions planting machine that captions are provided.
3. digital television advertisement video program request integrated system according to claim 2 is characterized in that: described multiplexer comprises ASI input module, input analysis module, TS filtering module, PSI/SI modified module, PID mapping block, PCR correction module, code check adjusting module and the ASI output module that is linked in sequence.
4. digital television advertisement video program request integrated system according to claim 3, it is characterized in that: described QAM modulator comprises ASI input module, code stream processing module, QAM modulation module, upconversion process module and the radio frequency output module that is linked in sequence, the data-signal of described multiplexer output is converted to TS stream through the ASI input module, become the medium-frequency IF signal after TS stream process code stream processing module and QAM modulation module are handled, after the upconversion process resume module, export by the radio frequency output module.
5. digital television advertisement video program request integrated system according to claim 4, it is characterized in that: described user terminal comprises set-top box and television set, set-top box is used for decoding of audio frequency and video text subtile and channel selection, and the audio, video data after the set top box decodes shows by television set.
6. digital television advertisement video program request integrated system according to claim 5 is characterized in that: described blender adopts radio frequency network to communicate by letter with user terminal, and described radio frequency network is the cable video network that public wire radio network or user are set up certainly.
7. digital television advertisement video program request integrated system according to claim 6 is characterized in that: described user terminal and ordering digital video by short message device adopt ethernet communication.
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