CN106034258A - Router and broadcasting method for multipath broadcast digital television signals - Google Patents
Router and broadcasting method for multipath broadcast digital television signals Download PDFInfo
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Abstract
The invention discloses a router for multipath broadcast digital television signals, comprising a signal reception unit, a control unit, a code stream parsing unit, a data processing unit and a data forwarding unit. The signal reception unit comprises a plurality of independent parallel tuning reception modules in order to receive TS code streams of multipath digit television signals; the control unit controls the tuning reception module to receive a television signal, the standard and the channel of which are undetermined; the code stream parsing unit comprises a plurality of TS code stream parsing modules which respectively receive the digital television signal TS code stream transmitted by the corresponding tuning reception module and parse out composite program TS code streams and program information; the data processing unit receives the composite program TS code stream transmitted from the TS code stream parsing unit, divides each path of the composite program TS code stream into independent program TS code streams and performs IP packaging. The data forwarding unit receives an IP data pack transmitted by the data processing unit and forwards the IP data pack to a user device having a request for a program. The router and broadcasting method of the invention realize mixed reception for multi-standard digit television signals.
Description
Technical field
The present invention relates to DITEC digital television communications broadcast world, realize multiplex broadcasting digital television signal especially by IP routing mode
Device and its broadcasting method.
Background technology
Along with the progress of communication technology, broadcast digital TV business, also into high speed development and universal stage, provides the user
Substantial amounts of variation TV programme.Broadcast digital TV technology has different standards in different countries and regions, by network
Difference can be divided into cable digital TV, satellite digital TV, terrestrial DTV；Can divide by the difference of encapsulation format
For TS code stream form, such as DVB-C/T/S/H, ASTC, ISDB-T and DTMB standard, and non-TS code stream form,
The China Mobile multimedia broadcasting CMMB standard of such as China's independent research.
Transmitting stream (Transport Stream) and be called for short TS code stream, it is according to ITU-T Rec.H.222.0, ISO/IEC 13818
Agreement and a kind of data stream of defining.Referring to Fig. 1, TS code stream be made up of one or multi-channel program data, per pass program is by one
Individual or multiple primary flows and some other streams are combined with each other, including video flowing, audio stream, Program Specific Information stream (PSI) and
Other packets.Wherein PSI table has 4 types: Program Association Table (PAT), Program Map Table (PMT), condition are visited
Ask table (CAT) and network information table (NIT).TS encapsulation format is bit stream format based on bag, and each bag is usually 188
Byte, the different videos of program, audio frequency and programme information be encapsulated into different bags and identify with P_ID, and wherein, P_ID is TS
Unique recognition marks in code stream, the content of bag is determined by P_ID；P_ID=0x00 represents Program Association Table (PAT),
PAT describes to contain which type of P_ID in TS code stream；The P_ID of Program Map Table (PMT) is to be supplied to by PAT
Go out, the information comprised in a road program can be obtained by this table.TS code stream is widely used, most digital television signal
Storage and propagation all use TS code stream form, whenever receive TS bit stream data, are set by PC player software or intelligence
Standby client end AP P player can realize the real-time play of TS code stream.
China Mobile multimedia broadcasting (CMMB) system is the CMMB industry standard of China's independent research, it is stipulated that
In broadcasting service frequency range, frame structure, chnnel coding and the tune of mobile multimedia broadcast system broadcast channel transmission signal
System and the multiplexing of code stream, launch the broadcast system of the multi-media signals such as TV, broadcast, data message by satellite or terrestrial wireless
System, it is possible to achieve whole nation roaming.The program data of CMMB mobile TV have employed MFS encapsulation format, is a kind of non-TS code
Stream format, in CMMB, the information such as system prevailing transmission audio frequency, video, data and electron service instruction, these information
Transmission is realized by time division multiplex.Referring to Fig. 2, each broadcast channel frame is divided into n multiplexed frame, each multiplexed frame to divide again
For several multiplexed sub frames.Multiplexed frame numbering repeats from 0～39, referred to as MF_ID, and wherein the 0th multiplexed frame regulation is used for passing
Defeated control information, other multiplexed frames transmission business information.Multiplexed frame is made up of multiplex frame head and payload.
At present, it is to receive digital signal by DTV receiver that user watches DTV, but, Digital TV Receiving
Device is just for the digital television signal of a kind of specific criteria Yu standard, and is simply received at television network broadcast, and extensively
The IP network incompatible of application.User terminal is if notebook or desktop computer, it is necessary to by digital television signal line sum
Word television reception card apparatus ability TV reception, and as mobile phone, this kind of intelligent terminal of panel computer, then cannot direct viewing
Digital television program.
For the problems referred to above, the technology of this area has been also carried out further improvement, and one of which prior art discloses at net
Realizing the method that DTV is play in network layers, it is mainly next real by the digital television signal of TS code stream carries out IP encapsulation
Existing.But, technical scheme disclosed in prior art simply realizes the distribution of single channel TS Stream digital TV, does not has concrete many
The distribution function of road TS Stream digital TV, it is impossible to realize meeting the most online demand watching TV programme in multiple terminals, in reality
There is significant limitation in the application on border.
Summary of the invention
The invention reside in the shortcoming overcoming prior art with not enough, it is provided that one realizes multiplex broadcasting numeral electricity by IP routing mode
Depending on the router of signal, this router is by controlling parallel digital television signal treatment channel, it is achieved multi-standard DTV is believed
Number mixing receive, multiple terminal is concurrently accessed, with IP data transfer mode simultaneously to multiple terminal transmission its select to watch wide
Broadcast TV programme.
For achieving the above object, the technical solution adopted in the present invention is: the router of a kind of multiplex broadcasting digital television signal,
Including signal receiving unit, control unit, data processing unit and data transmission unit；Wherein, signal receiving unit has many
The tuning receiver module of individual independent parallel, to receive multi-path digital TV signal TS code stream；Control unit control signal receives single
The tuning receiver module of unit, receives specific criteria and the TV signal of channel；Code stream analyzing unit includes multiple TS code stream analyzing
Module, it receives the digital television signal TS code stream that tuning receiver module corresponding to signal receiving unit transmits respectively, parses
Compound program TS code stream and programme information, send data processing unit to；Data processing unit, receives TS code stream analyzing list
The composite program TS code stream that unit is transmitted, is separated into independent program TS code stream by every road composite program TS code stream, and to separation
After program TS code stream carry out IP encapsulation；Data forwarding unit, receives the IP packet that data processing unit transmits, passes through
ICP/IP protocol forwards IP packet to the subscriber equipment having program request.
Compared to prior art, the present invention is by parallel signal receiving unit, and data processing unit, in the control of control unit
Under realize multichannel TS code stream and process and IP encapsulates, such that it is able to realize passing to multiple terminals with IP data transfer mode simultaneously
The broadcast TV program that its selection defeated is watched.
As a further improvement on the present invention, data processing unit is according between PAT, PMT and the audio/video program of TS code stream
The relatedness of P_ID index, is grouped each different program audio video data according to specific P_ID, generates according to P_ID
EPG electric program menu, guides the program of corresponding P_ID packet.
As a further improvement on the present invention, described signal receiving unit receives one or more non-TS code stream form the most simultaneously
China Mobile multimedia broadcasting TV signal CMMB.Thus the demand of the TV programme simultaneously watching various criterion can be met.
As a further improvement on the present invention, described code stream analyzing unit also includes one or more CMMB code stream analyzing module,
It goes out program audio video data and programme information for the MFS code stream analyzing of digital television signal CMMB, extracts program corresponding
MF_ID multiplexed frame numbering, send data processing unit to.
As a further improvement on the present invention, for the digital television signal CMMB of non-TS data stream format, data process single
Unit's unit generates EPG electric program menu according to the MF_ID in CMMB digital television program code stream MFS, and it is right to guide
Answer the program that MF_ID is grouped.
As a further improvement on the present invention, for the digital television signal CMMB of non-TS data stream format, data process single
Unit extracts the audio, video data of corresponding program from MFS code stream, parses the attribute of every frame audio, video data, according to sound simultaneously
The attribute of video data and MF_ID construct PAT and PMT, then the audio, video data and PAT, pmt table lattice to reduction is carried out
PES encapsulation and TS encapsulate, and are converted to the data of TS code stream form.
As a further improvement on the present invention, described control unit, data processing unit and data transmission unit are integrated in SoC
SOC(system on a chip) or embedded system.
As a further improvement on the present invention, also include that a network data receives unit, receive 3G/4G or the IP of broadband internet
Data, are transferred directly to data forwarding unit, are forwarded to the subscriber equipment connected according to ICP/IP protocol.
As a further improvement on the present invention, described data forwarding unit pass through LAN lan interfaces, wireless network and/
Or WIFI interface carries out data transmission.
Present invention also offers the broadcasting method of a kind of multiplex broadcasting digital television signal, comprise the following steps:
A) according to the program request of user, control multidiameter delay and receive corresponding digital television signal TS code stream；
B) from the multi-path digital TV signal TS code stream received, the compound program TS code stream of multichannel and programme information are parsed；
C) every road composite program TS code stream is separated into single program TS code stream；
D) the single program TS code stream generated every road carries out IP encapsulation；
E) the IP packet after being encapsulated on every road is transmitted to the subscriber equipment of program request by ICP/IP protocol.
Compared to prior art, this method is received by parallel and processed digital television signal, it is achieved at multichannel TS code stream
Reason and IP encapsulate, such that it is able to realize multiple terminals in an ip network to watch digital television program online simultaneously.
Further, according to the relatedness of P_ID index between PAT, PMT and the audio/video program of TS code stream, by each difference
Program audio video data be grouped according to specific P_ID, according to P_ID generate EPG electric program menu, guide correspondence
The program of P_ID packet.
Further, described digital television signal can be with the China Mobile multimedia broadcasting TV signal of right and wrong TS code stream standard
CMMB。
Further, it goes out program audio video data and programme information for the MFS code stream analyzing of CMMB digital television signal,
Extract the MF_ID multiplexed frame numbering that program is corresponding.
Further, for the digital television signal CMMB of non-TS data stream format, according to CMMB digital television program code stream
MF_ID in MFS generates EPG electric program menu, guides the program of corresponding MF_ID packet.
Further, for the digital television signal CMMB of non-TS data stream format, from MFS code stream, extract corresponding program
Audio, video data, parse the attribute of every frame audio, video data, according to the attribute of audio, video data and MF_ID structure simultaneously
PAT and PMT, then the audio, video data and PAT, pmt table lattice to reduction carries out PES encapsulation and TS encapsulates, and is converted to
TS code stream normal data.
Further, during the programm name request viewing program that user intelligent terminal is serviced by EPG, by obtaining this program
P_ID or MF_ID, and the IP message being packaged into by the TS bit stream data message of corresponding P_ID or MF_ID packet, send
Broadcasting related-program is resolved by player to subscriber equipment.
Accompanying drawing explanation
Fig. 1 is TS code stream form schematic diagram.
Fig. 2 is the MFS code stream form schematic diagram of CMMB.
Fig. 3 is the internal module connection diagram of the router embodiment 1 of multiplex broadcasting digital television signal of the present invention.
Fig. 4 is the circuit structure diagram of the router embodiment 1 of multiplex broadcasting digital television signal of the present invention.
Fig. 5 is the internal module connection diagram of the router embodiment 2 of multiplex broadcasting digital television signal of the present invention.
Fig. 6 is the circuit structure diagram of the router embodiment 2 of multiplex broadcasting digital television signal of the present invention.
Fig. 7 is that the data of the router of multiplex broadcasting digital television signal of the present invention flow away to figure.
Detailed description of the invention
Embodiment 1
Referring to Fig. 3, it is the router embodiment 1 internal module connection diagram of multiplex broadcasting digital television signal of the present invention.
The router 1 of the multiplex broadcasting digital television signal of the present embodiment 1 includes signal receiving unit 11, control unit 12, code stream solution
Analysis unit 13, data processing unit 14, data forwarding unit 15 and network data receive unit 16.Control unit 12 controls
Enabling signal receives unit 11, after signal receiving unit 11 receives digital television signal, is transferred to code stream analyzing unit 13,
Carrying out code stream analyzing, pass to data processing unit 14 afterwards and carry out data process, the data after finally processing are transferred to data and turn
Bill unit 15, carries out IP routing forwarding.Network data receives unit 16, receives 3G/4G or the IP data of broadband internet,
It is transferred directly to data forwarding unit 15, carries out IP routing forwarding.
Specifically, signal receiving unit 11 is made up of multiple tuning receiver modules, connects including DVB-C receiver module, DTMB
Receive module, DVBT/ATSC/ISDB receiver module etc., such that it is able to the program channel frequency selected according to user, receive corresponding
Digital television program signal.
Control unit 12 control signal receives unit 11 and receives the TV signal of specific criteria and channel, sees according to required by user
The program seen, enabling signal receives the tuning receiver module that unit is corresponding, receives the digital television signal of corresponding channel.
Code stream analyzing unit 13, has multiple TS code stream analyzing module, receives the digital television signal that signal receiving unit transmits
TS code stream, parses compound program TS code stream and programme information, sends data processing unit to.
Data processing unit 14 receives the composite program TS code stream that code stream analyzing unit 13 transmission comes parallel, by compound for every road joint
Mesh TS code stream is separated into independent program TS code stream, and the program TS code stream after separating is carried out IP encapsulation, generates EPG
Electric program menu, and the program data after separating is carried out IP encapsulation.
Data transmission forwards 15 routing forwarding realizing IP packet, can pass through LAN lan interfaces or wireless network WIFI
Interface, forwards IP packet to the subscriber equipment having program request according to ICP/IP protocol.
Referring to Fig. 4, it is the circuit structure diagram of multiplex broadcasting digital television signal router of the embodiment of the present invention 1 simultaneously.
On hardware, this multiplex broadcasting digital television signal router includes multichannel tuning receiver module, digital demodulation blocks and TS code
The TS code stream channel of stream parsing module composition and a SOC；Wherein, SOC is integrated with a control
Unit 12, program stream separation module, EPG generation module, IP encapsulation module and data forwarding unit 15.The tuning of multichannel
Receiver module and digital demodulation blocks constitute the signal receiving unit 11 shown in Fig. 3, and TS code stream analyzing module constitutes code stream solution
Analysis unit 13, program separation module, EPG generation module, IP encapsulation module constitute data processing unit 14.
The tuning receiver module that control unit 12 controls to specify according to the program standard selected by user and channel receives DTV
Signal.After tuning receiver module receives digital television signal, digital demodulation blocks demodulate original TS code stream, then pass
Give TS code stream analyzing module to parse compound TS code stream and programme information.Pass to EPG generation module and joint the most simultaneously
Mesh separation module, wherein, EPG generation module is taken root and is generated corresponding program guide according to P_ID, and program separation module is isolated
The TS code stream of single program.Afterwards, program menu information and single program TS bit stream carry out IP to IP encapsulation module
Packet encapsulation, is eventually transferred to data forwarding unit 15 and forwards.
Correspondingly, present invention also offers the broadcasting method of a kind of multiplex broadcasting digital television signal, comprise the following steps:
A) according to the program request of user, control multidiameter delay and receive corresponding digital television signal TS code stream；
B) from the multi-path digital TV signal TS code stream received, compound program TS code stream and programme information are parsed；
C) electric program menu is generated according to the P_ID in programme information；
D) every road composite program TS code stream is separated into single program TS code stream；
E) the single program TS code stream generated every road carries out IP encapsulation；
F) the IP packet after being encapsulated on every road is transmitted to the subscriber equipment of program request by ICP/IP protocol.
Hereinafter the running of the router of the multiplex broadcasting digital television signal of the present invention is described with concrete application:
User intelligent terminal passes through wireless WIFI or WLAN, local lan, is connected with the router of the present invention, afterwards at end
The program guide that end software is serviced by EPG, selects to watch certain program, such as, watches the program 1 of China's DTMB standard,
Then the P_ID_1 corresponding to the program 1 of selection, channel information, television standard (DTMB) are issued the present invention by subscriber equipment
Router.
The router of the present invention receives the information that terminal sends, and control unit 12 starts tuning receiver module according to television standard,
According to channel information, tuning receiver module is carried out frequency frequency locking control, be tuned to corresponding channel, receive the DTMB of this channel
Digital television signal.Then be demodulated by digital demodulation blocks, the signal after demodulation through TS code stream analyzing module,
Parse audio, video data and programme information, the association of P_ID index between foundation PAT, PMT and audio/video program of program
Property, it is thus achieved that the program P_ID of this channel.Passing to data processing unit 14 afterwards, EPG generation module generates according to program P_ID
Program guide, program separation module, by each different program TS stream, is grouped according to according to specific P_ID, according to user institute
The P_ID_1 of the program 1 of choosing extracts the TS code stream 1 of this program 1, then through IP package module, the TS to this program 1
Code stream 1 carries out IP encapsulation, forms IP packet, forwards IP packet to there being program request finally by ICP/IP protocol
User intelligent terminal.
User intelligent terminal, according to the IP packet received, is converted to the TS code stream of this program 1, just can be seen by player
See DTMB digital television program 1.
When there being multiple user to be concurrently accessed route, control unit obtains the program request that multiple user terminals are sent, according to asking
Ask the P_ID of program, television standard and channel information, open corresponding multiple tuning receiver modules and receive corresponding program channel letter
Number, afterwards, under the control of the control unit, multiple channel parallels carry out digital demodulation, TS code stream analyzing, TS code stream program
Separating, IP encapsulates, and IP forwards, and finally packaged program data packets will be sent to the different user of correspondence according to IP address
Terminal, watches.
Relative to prior art, the router of the present invention can realize multiple subscriber equipment and watch TS code stream form online simultaneously
Multi-standard digital television signal program.
Embodiment 2
Referring to Fig. 5, it is the router embodiment 2 internal module connection diagram of multiplex broadcasting digital television signal of the present invention.
Relative to embodiment 1, the present embodiment 2 adds the CMMB of independent non-TS code stream form and receives and treatment channel.This reality
The router 2 of the multiplex broadcasting digital television signal executing example includes signal receiving unit 21, control unit 22, code stream analyzing unit
23, data processing unit 24, data forwarding unit 25 and network data receive unit 26.Control unit 22 controls enabling signal
Receive unit 21, after signal receiving unit 21 receives digital television signal, be transferred to code stream analyzing unit 23, carry out code stream
Resolving, pass to data processing unit 24 afterwards, carry out data process, the data after processing afterwards are transferred to data forwarding unit
24, carry out IP routing forwarding.Network data receives unit 26, receives 3G/4G or the IP data of broadband internet, directly passes
It is defeated by data forwarding unit, carries out IP routing forwarding.
Specifically, signal receiving unit 21 is made up of multiple tuning receiver modules, connects including DVB-C receiver module, DTMB
Receive module, CMMB receiver module etc., such that it is able to the program channel frequency selected according to user, receive corresponding DTV
Programme signal.
Control unit 22 control signal receives unit 21 and receives the TV signal of specific criteria and channel, sees according to required by user
The program seen, enabling signal receives the tuning receiver module that unit is corresponding, receives the digital television signal of corresponding channel.
Code stream analyzing unit 23, has multiple TS code stream analyzing module or CMMB parsing module, receives signal receiving unit and passes
The digital television signal come, parses compound program data and programme information, sends data processing unit to.
Data processing unit 24 receives the program data that code stream analyzing unit 23 transmission comes parallel, by the MFS of CMMB standard
Code stream is converted to TS code stream, and every road composite program TS code stream is separated into independent program TS code stream, and to the joint after separating
Mesh TS code stream carries out IP encapsulation, generates EPG electric program menu, and single program TS code stream is carried out IP encapsulation.
Data forwarding unit 25 realizes the routing forwarding of IP packet, can pass through LAN lan interfaces or wireless network WIFI
Interface, forwards IP packet to the subscriber equipment having program request according to ICP/IP protocol.
Referring to Fig. 6, it is the circuit module schematic diagram of router of multiplex broadcasting digital television signal of the embodiment of the present invention 2,
Relative to embodiment 1, the circuit of the router 2 described in this enforcement adds the reception of the CMMB digital signal of non-TS form
And treatment channel, including tuning receiver module, digital demodulation blocks, TS code stream analyzing module, CMMB code stream analyzing module
And SOC.Wherein, SOC, it is integrated with control unit, TS code stream modular converter, program stream separates
Module, EPG generation module, IP encapsulation module and data forwarding unit.The tuning receiver module of multichannel and digital demodulation blocks
Constituting the signal receiving unit 21 shown in Fig. 5, TS code stream analyzing module and CMMB parsing module constitute code stream analyzing list
Unit 23, TS code stream modular converter, program stream separation module, EPG generation module, IP encapsulation module constitute data and process
Unit 24.
Specifically, the program processing procedure of TS code stream form is consistent with embodiment 1, is not repeated herein.And tune receiver module and connect
After receiving the CMMB digital television signal of non-TS code stream, digital demodulation blocks demodulate MFS code stream, pass to CMMB
Code stream analyzing module, parses program audio video data and programme information in MFS code stream, pass to afterwards EPG generation module and
TS code stream modular converter, wherein, EPG generation module generates corresponding program guide, and TS code stream modular converter is by MFS code stream
Form is converted into TS code stream form, is transferred to IP encapsulation module and carries out IP packet encapsulation, is eventually transferred to data and forwards single
Unit forwards.
Correspondingly, present invention also offers the broadcasting method of a kind of multiplex broadcasting digital television signal, comprise the following steps:
A) according to the program request of user, control multidiameter delay and receive corresponding digital television signal；
B) from the digital television signal received, the compound program audio video data of multichannel and programme information are parsed；
If c) digital television signal received is CMMB standard, then MFS code stream form is converted to TS code stream form；
D) every road is combined TS code stream and is separated into single program TS code stream；
E) the single program TS code stream generated every road carries out IP encapsulation；
F) the IP packet after being encapsulated on every road is transmitted to the subscriber equipment of program request by ICP/IP protocol.
Specifically, MFS code stream form being converted to TS code stream form, the sound extracting corresponding program from MFS code stream regards
Frequency evidence, parses the attribute of every frame audio, video data simultaneously, according to the attribute of audio, video data and MF_ID structure PAT and
PMT, then the audio, video data and PAT, pmt table lattice to reduction carries out PES encapsulation and TS encapsulates, and is converted to TS code stream
Normal data.
Hereinafter the running of router described in the embodiment of the present invention 2 and concrete application are described.Due to TS code stream form
Signal processing mode consistent with embodiment 1, only the signal processing of parallel non-TS code stream form is carried out in detail at this
Describe:
For the CMMB TV signal of non-TS code stream form, user intelligent terminal passes through wireless WIFI or WLAN, local
LAN, is connected with this router, the program guide serviced by EPG at terminal software afterwards, selects viewing CMMB standard
Program 2, then the channel information corresponding to the program 2 of selection and MF_ID_2 can be issued this router.
The router of the present invention receives the information that terminal sends, and control unit 22 starts tuning receiver module, according to channel information
Tuning receiver module is carried out frequency frequency locking control, be tuned to corresponding channel, receive the CMMB digital television signal of this channel,
Being demodulated by digital demodulation blocks, the signal after demodulation, through CMMB code stream analyzing unit, parses MFS code stream
The audio, video data of middle program and programme information, extract MF_ID multiplexed frame numbering, pass to data processing unit 24 afterwards, logical
Cross EPG generation module, generate program guide according to the MF_ID in programme information, by TS code stream modular converter, from MFS
Code stream extracts the audio, video data of MF_ID_1 correspondence program, parses the attribute of every frame audio, video data, according to sound simultaneously
The attribute of video data and MF_ID construct PAT and PMT, then the audio, video data and PAT, pmt table lattice to reduction is carried out
PES encapsulation and TS encapsulate, and are converted to TS stream format data, then through IP package module, single-unit mesh TS code stream are carried out IP
Encapsulation, forms IP packet, and final data retransmission unit 25 forwards IP packet to there being program request according to ICP/IP protocol
User intelligent terminal.
User intelligent terminal, according to the IP packet received, is converted to the TS code stream of this program, just can be watched by player
The CMMB TV programme 2 that oneself is selected.
Same, owing to signal receiving unit and code stream Interpretation unit are all independent parallels, under the control of the control unit, can
To realize the Digital TV Receiving of the CMMB standard of multiple non-TS code stream form, it is possible to realize the numeral electricity of TS code stream form
Mixing reception depending on signal standards and the CMMB digital television signal standard of non-TS code stream form.
Relative to embodiment 1, the router of the present embodiment, not only can realize multiple users and watch DTV online simultaneously
Program, and the multiple standards DTV letter of TS code stream form and this non-TS code stream form of CMMB can be watched simultaneously
Number.
For the concrete data of the present embodiment 2 flow away to, refer to Fig. 7, such as the DTMB receiving TS code stream form
During standard digital television signals, the signal received is demodulated by router, parses compound TS program data stream, then to multiple
Close TS program data stream and carry out program separation, include program 1, program 2 to program n；When connecing as non-TS code stream form
CMMB TV signal, the signal received is demodulated, parses compound MFS code stream by router, then from MFS code stream,
Extract the information of each program, include program 1, program 2 to program n, then be packaged into TS code stream form；Afterwards, for
The TS program stream of consolidation form, then carry out IP encapsulation, it being transmitted to subscriber equipment, subscriber equipment passes through programme, it is possible to
Select viewing program.So, the most effectively achieve TS code stream form and the unification of non-TS code stream form, use to obtain this router
Can mix and receive the digital television signal forwarding multiple standards.
The invention is not limited in above-mentioned embodiment, if to the various changes of the present invention or deformation without departing from the spirit of the present invention
And scope, if within the scope of these are changed and deform claim and the equivalent technologies belonging to the present invention, then the present invention is also intended to
Comprise these to change and deformation.
Claims (16)
1. the router of a multiplex broadcasting digital television signal, it is characterised in that: include signal receiving unit, control unit, code stream analyzing unit, data processing unit and data forwarding unit；Wherein,
Signal receiving unit has the tuning receiver module of multiple independent parallel, to receive multi-path digital TV signal TS code stream；
Control unit control signal receives the tuning receiver module of unit, receives specific criteria and the TV signal of channel；
Code stream analyzing unit, including multiple TS code stream analyzing modules, it receives the digital television signal TS code stream that tuning receiver module corresponding to signal receiving unit transmits respectively, parses compound program TS code stream and programme information, send data processing unit to；
Data processing unit, receives the composite program TS code stream that TS code stream analyzing unit transmits, and every road composite program TS code stream is separated into independent program TS code stream, and the program TS code stream after separating is carried out IP encapsulation；
Data forwarding unit, receives the IP packet that data processing unit transmits, and forwards IP packet to the subscriber equipment having program request by ICP/IP protocol.
The router of multiplex broadcasting digital television signal the most according to claim 1, it is characterized in that: data processing unit is according to the relatedness of P_ID index between PAT, PMT and the audio/video program of TS code stream, obtain the P_ID of each different program TS code stream, generate EPG electric program menu according to P_ID, guide the program of corresponding P_ID packet.
The router of multiplex broadcasting digital television signal the most according to claim 1, it is characterised in that: described signal receiving unit receives China Mobile multimedia broadcasting TV signal CMMB of one or more non-TS code stream form the most simultaneously.
The router of multiplex broadcasting digital television signal the most according to claim 3, it is characterized in that: described code stream analyzing unit also includes one or more CMMB code stream analyzing module, it goes out program audio video data and programme information for the MFS code stream analyzing of digital television signal CMMB, extract the MF_ID multiplexed frame numbering that program is corresponding, send data processing unit to.
The router of multiplex broadcasting digital television signal the most according to claim 3, it is characterized in that: for the digital television signal CMMB of non-TS data stream format, data processing unit unit generates EPG electric program menu according to the MF_ID in CMMB digital television program code stream MFS, guides the program of corresponding MF_ID packet.
The router of multiplex broadcasting digital television signal the most according to claim 3, it is characterized in that: for the digital television signal CMMB of non-TS data stream format, data processing unit extracts the audio, video data of program from MFS code stream, parse the attribute of every frame audio, video data simultaneously, attribute and MF_ID according to audio, video data construct PAT and PMT, audio, video data and PAT, pmt table lattice to reduction carry out PES encapsulation and TS encapsulation again, are converted to the data of TS code stream form.
The router of multiplex broadcasting digital television signal the most according to claim 1, it is characterised in that: described control unit, data processing unit and data transmission unit are integrated in SoC SOC(system on a chip) or embedded system.
The router of broadcast digital television signals the most according to claim 1, it is characterized in that: also include that a network data receives unit, receive 3G/4G or the IP data of broadband internet, be transferred directly to data forwarding unit, be forwarded to the subscriber equipment accessed according to ICP/IP protocol.
The router of multiplex broadcasting digital television signal the most according to claim 1, it is characterised in that: described data forwarding unit is carried out data transmission by LAN lan interfaces, wireless network and/or WIFI interface.
10. the broadcasting method of a multiplex broadcasting digital television signal, it is characterised in that: comprise the following steps:
A) according to the program request of user, control multidiameter delay and receive corresponding digital television signal TS code stream；
B) from the multi-path digital TV signal TS code stream received, the compound program TS code stream of multichannel and programme information are parsed；
C) every road composite program TS code stream is separated into single program TS code stream；
D) the single program TS code stream generated every road carries out IP encapsulation；
E) the IP packet after being encapsulated on every road is transmitted to the subscriber equipment of program request by ICP/IP protocol.
The broadcasting method of 11. multiplex broadcasting digital television signals according to claim 10, it is characterized in that: according to the relatedness of P_ID index between PAT, PMT and the audio/video program of TS code stream, each different program audio video data is grouped according to specific P_ID, generate EPG electric program menu according to P_ID, guide the program of corresponding P_ID packet.
The broadcasting method of 12. multiplex broadcasting digital television signals according to claim 10, it is characterised in that: described digital television signal can be with China Mobile multimedia broadcasting TV signal CMMB of right and wrong TS code stream standard.
The broadcasting method of 13. multiplex broadcasting digital television signals according to claim 12, it is characterised in that: the MFS code stream analyzing for digital television signal CMMB goes out program audio video data and programme information, extracts the MF_ID multiplexed frame numbering that program is corresponding.
The broadcasting method of 14. multiplex broadcasting digital television signals according to claim 12, it is characterized in that: for the digital television signal CMMB of non-TS data stream format, generate EPG electric program menu according to the MF_ID in CMMB digital television program code stream MFS, guide the program of corresponding MF_ID packet.
The broadcasting method of 15. multiplex broadcasting digital television signals according to claim 12, it is characterized in that: for the digital television signal CMMB of non-TS data stream format, the audio, video data of corresponding program is extracted from MFS code stream, parse the attribute of every frame audio, video data simultaneously, attribute and MF_ID according to audio, video data construct PAT and PMT, audio, video data and PAT, pmt table lattice to reduction carry out PES encapsulation and TS encapsulation again, are converted to TS code stream normal data.
The broadcasting method of 16. multiplex broadcasting digital television signals according to claim 15, it is characterized in that: during the programm name request viewing program that user intelligent terminal is serviced by EPG, by obtaining P_ID or MF_ID of this program, and the IP message that the TS bit stream data message of corresponding P_ID or MF_ID packet is packaged into, send to subscriber equipment to be resolved by player and play related-program.
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