CN105765888B - It is used for transmission and receives the method and system and relevant transmitter, receiver system, conversion modulator and receiver of the wireless television signal of received terrestrial digital broadcasting type - Google Patents
It is used for transmission and receives the method and system and relevant transmitter, receiver system, conversion modulator and receiver of the wireless television signal of received terrestrial digital broadcasting type Download PDFInfo
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- CN105765888B CN105765888B CN201380081177.2A CN201380081177A CN105765888B CN 105765888 B CN105765888 B CN 105765888B CN 201380081177 A CN201380081177 A CN 201380081177A CN 105765888 B CN105765888 B CN 105765888B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
- H04H20/61—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for local area broadcast, e.g. instore broadcast
- H04H20/63—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for local area broadcast, e.g. instore broadcast to plural spots in a confined site, e.g. MATV [Master Antenna Television]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
- H04N21/23608—Remultiplexing multiplex streams, e.g. involving modifying time stamps or remapping the packet identifiers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/61—Network physical structure; Signal processing
- H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
- H04N21/6112—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving terrestrial transmission, e.g. DVB-T
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/61—Network physical structure; Signal processing
- H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
- H04N21/6143—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via a satellite
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/647—Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load, bridging between two different networks, e.g. between IP and wireless
- H04N21/64707—Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load, bridging between two different networks, e.g. between IP and wireless for transferring content from a first network to a second network, e.g. between IP and wireless
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/02—Arrangements for relaying broadcast information
- H04H20/06—Arrangements for relaying broadcast information among broadcast stations
Abstract
Describe the method for being used for transmission and receiving the wireless television signal of received terrestrial digital broadcasting type,The wireless television signal includes can be in the multiple radiovision programs or service that special frequency band is received by the receiver,Wherein at least part of the frequency band disables the wireless television signal of received terrestrial digital broadcasting type and is assigned to different services,Wherein the method is provided for satellite type wireless television signal of the transmission comprising capableing of received radiovision program or service,The wireless television signal of received terrestrial digital broadcasting type is obtained from the satellite type wireless television signal,The wireless television signal of the received terrestrial digital broadcasting type is placed in the channel for the part for belonging to the frequency band,The wireless television signal of the received terrestrial digital broadcasting type is not radiation but sends the receiver to by cable,The wherein different services especially mobile phone service,E.g. LTE type.
Description
Technical field
The present invention relates to be used for transmission and the method for wireless television signal that receives received terrestrial digital broadcasting type and related
Equipment.
Background technique
Referring to Fig.1, so far, the reception and subsequent distribution of the television channel of ground and satellite broadcasting have passed through
Independent or shared formula coaxial cable system 1' use broadcast with wireless television signal Radio Frequency Channel (terrestrial broadcasting, VHF with
UHF waveband) identical Radio Frequency Channel carries out, or by by by the wireless television signal of satellite reception from 11-12GHz
Spectrum conversion is to the first intermediate frequency 1st950-2150MHz in IF wave band is carried out, they can lead in 950-2150MHz
Cable is crossed to be distributed in the case where no excessive attenuation.
More particularly, the wireless television signal of satellite type is defended by relevant to low noise block converter 3' or LNB
Star antenna 2' is received, and the converter makes satellite radio TV signal be moved to the first intermediate frequency l in a manner of blockstIF,
And the terrestrial wireless TV signal broadcasted is received by antenna 4', the antenna, which allows to receive, to be subsequently passed to for terrestrial television
The signal of the terminals 5' of channel.
Then, by means of coaxial cable distributed network or by means of according to the radio frequency of television channel (ground and satellite) and
Modulation signature carrys out the dedicated set-top box of television channel described in tuned and demodulated, satellite and terrestrial wireless TV signal be sent to
Equipment (TV or iDTV (" the integrated digital electricity with integrated digital tuner with the tuner for terrestrial broadcasting wave band
Depending on ")) connection user's plugs and sockets.It should be noted herein that being needed by the reception of the individual consumer in apartment building using conjunction
Suitable device (so-called switch), the suitable device will be mounted on referring for example to the plan view of the apartment building for adjusting
The upstream of humorous, demodulation and decoding satellite-signal user's set-top box.
Television receiver, set-top box and iDTV usually can receive the terrestrial television signal (DVB-T/T2) of broadcast；Such as by
What country and international responsible institution and department determined, the frequency band that can tune since it for it is shown in Figure 2 those.
Referring to Fig. 3, another example on the ground for receiving broadcast and the system 1 of satellite radio TV signal is illustrated,
It is mainly characterized by making in above-mentioned VHF/UHF wave band and through the typical COFDM modulation of DVB-T (digital video broadcast-terrestrial)
All television channels (i.e. DTB Digital Terrestrial Broadcasting (DVB-T) and satellite channel (DVB-S)) of (" Coded Orthogonal Frequency Division Multiplexing ") are right
It is available for the plugs and sockets of user.
In fact, wireless television signal that is received by satellite antenna 2, modulating through QPSK is sent to low noise acoustical convertor
3, it is being used for before the distribution network of public TV system is then sent to together with the signal with other ground TV broadcasts
The typical COFDM format of DVB-T is modulated by conversion in the terminals 7 of satellite television channel.
Only sufficient amount of channel is left not when terrestrial broadcasting does not occupy all available channels of VHF/UHF wave band
When occupied, which is available.Up to date, which is also impossible to realize in some countries, in these countries
Middle VHF/UHF wave band is almost entirely occupied by country and privately owned Television Broadcasting Limited.
Recently, as shown in Figure 4, it has been determined that V-band (UHF) should be limited in 790MHz corresponding with UHF channel 60,
It eliminates the digital terrestrial television service of 791MHz to 862MHz (800MHz) and the frequency is distributed to the shifting of LTE type
Mobile phone service.Therefore, the frequency of 791MHz to 862MHz is no longer the frequency spectrum retained for digital video broadcast-terrestrial (DVB-T)
A part and be therefore no longer able to propagate the TV service in the frequency band, this is because such service can be by mobile phone
Signal (LTE) control, due to its a large amount of Transmission system in rural area and the city region Liang Ge, this causes to be received by television antenna
, the high-caliber LTE signal of signal relative to the transmitter from DTB Digital Terrestrial Broadcasting.However, and DTB Digital Terrestrial Broadcasting
(DVB-T) relevant TV signal receiver still have tuned and demodulated in 791MHz-862MHz frequency band with digital ground
Broadcast the ability of (DVB-T) relevant TV signal.Frequency due to nowadays distributing to LTE service in some countries is basis
ITU global standards are the frequency that the broadcast of wireless television signal retains always, and not necessarily all country can all support to move
It services and disables some frequencies, therefore this can continue many years.Therefore, the manufacturer of television receiver will continue to produce and also can
The equipment for receiving the terrestrial television signal for the TV wave band that may have been disabled in some countries.
It is still possible that the upper limit of the available bandwidth of ground TV broadcast in future can further decrease, remove 700MHz's
Wave band.
Therefore or even today, the UHF channel 61-69 (i.e. 9 radio-frequency channels of 8MHz bandwidth) of the wave band of 800MHz is constituted
Ground TV broadcast is disabled.In the future, UHF channel 49-60 (i.e. additional 12 of 8MHz bandwidth of the wave band of 700MHz
Radio-frequency channel) it can also be deleted.And in this case, TV signal relevant to ground digital television broadcast (DVB-T)
Receiver being capable of tuned and demodulated TV signal relevant to DTB Digital Terrestrial Broadcasting (DVB-T) within many years.
This reduction that can be used for the quantity of the radio-frequency channel of ground TV broadcast significantly limitation can utilize the clothes
Business is by the amount of the received TV programme of user.Due to the TV channel (DVB-T) through digital coding and each terrestrial broadcasting of modulation
TV programme (returned in referred to as MUX or be multiplexed in the group of DVB) comprising at least six SD (standard definition) coding, nine
The deletion that channel (current) and 12 other channels have 21 channels altogether in (future), which corresponds to, cannot transmit up to
About 120 different TV programme.
Summary of the invention
Therefore, it is an object of the present invention to point out a kind of to be used for transmission and receive the wireless of received terrestrial digital broadcasting type
The method and system and relevant device of TV signal, which solve the wave bands due to being previously allocated to received terrestrial digital broadcasting to be divided
Disadvantage caused by the service of dispensing mobile phone.
Another aim at of the invention points out a kind of radiovision for being used for transmission and receiving received terrestrial digital broadcasting type
The method and system and relevant device of signal allow maintenance can be by the TV signal of the DTB Digital Terrestrial Broadcasting of known type
The quantity of the received radiovision program of receiver is constant.
Another object of the present invention is to point out a kind of radiovision for being used for transmission and receiving received terrestrial digital broadcasting type
The method and system and relevant device of signal do not need to replace the antenna system for receiving the wireless television signal,
And it only needs that simply the antenna system is adapted to and is changed.
Another object of the present invention is to point out a kind of radiovision for being used for transmission and receiving received terrestrial digital broadcasting type
The method and system and relevant device of signal, do not need in order to use to the one of frequency spectrum relevant with DTB Digital Terrestrial Broadcasting
Part be assigned to mobile operator before received TV service quantitatively equal TV service and change or replace institute
State the receiver of wireless television signal.
Another object of the present invention is to point out a kind of radiovision for being used for transmission and receiving received terrestrial digital broadcasting type
The method and system and relevant device of signal allow broadcaster or user in a predefined manner by radiovision program point
It fits over and is assigned in the frequency band of Information Mobile Service.
Another object of the present invention is to point out a kind of radiovision for being used for transmission and receiving received terrestrial digital broadcasting type
The method and system and relevant device of signal, allowing to increase can be wide by the received ground digital of receiver of known type
Broadcast the coverage rate of the wireless television signal of type.
Another object of the present invention is to point out a kind of radiovision for being used for transmission and receiving received terrestrial digital broadcasting type
The method and system and relevant device of signal, meets that be responsible for frequency using relevant standard and needing not move through will
Authorization of the broadcasting frequency distribution for the department of both television and telephone.
The invention further relates to reception system, transmitter and the receiver of the wireless television signal of received terrestrial digital broadcasting type with
And the conversion modulator used in the reception system.
In short, in order to limit the influence of the radio-frequency range for being exclusively used in ground TV broadcast being greatly reduced, side of the invention
Method and system provide by means of satellite television transponder (such as in 11-12GHz wave band) transmission be no longer able to it is wide on ground
The radiovision program of position is found in the channel for the TV broadcast, to receive these sections in TV antenna system 1 shown in Fig. 3
Mesh, is then converted into COFDM format, is then distributed to and is assigned due to being no longer used to ground TV broadcast
To LTE Information Mobile Service, determine in available radio-frequency channel, i.e., in the channel of 800MHz wave band (UHF channel 61-69) and
In the future in the channel (UHF channel 49-60) of 700MHz wave band.
Using signal distribution system type as shown in Figure 3, chance determination is feasible, this is because by that must expire
The cable of sufficient current standard (EN 50083-2) and the shield effectiveness of device are solved and have been ensured because of the LTE service in this frequency band
The interference problem of generation.
In fact, these rules are allowed to the appropriate of the electromagnetic field generated due to the LTE service in these frequency band operations
Vulnerability to jamming.
Therefore, method and system of the invention and relevant device allow to believe using the TV for disabling ground TV broadcast
Road (61-69UHF and future 49-60UHF at present) comes via the electricity in independent or shared formula dissemination system (primary antenna system)
Cable is distributed, this is because these signals with can by ordinary numbers TV receiver (iDTV and for DTT (digital ground electricity
Depending on) set-top box) received DVB-T standard (COFDM modulation) or with the television set, receiver and set-top box for future
The DVB-T2 standard of design is transmitted.
By satellite reception and nowadays be inserted in the TV programme in UHF channel 61-69 distribution can it is each individually
Or it is carried out in shared formula cable distribution system in predetermined or different mode.
It is important to note that the technology realizes：
A) actually 100% national coverage rate (being carried out by satellite), and this is to the country that rate is never completely covered
It is impossible for the distribution network of ground；
B) UHF channel 61-69 and UHF channel 49-60 in future must no longer be distributed by main body or national sector, but suitable
It can be used in the TV receiving system of any situation at that time, to freely be used for cable distribution system and be not subjected to by LTE
Service the interference generated.As previously explained, such as it is effective for the device being mounted in cable distribution system in Europe
And the requirement of the standard EN50083-2 enforced is provided to glitch-free guarantee.It must be mentioned coaxial cable itself
For the guarantee suitably shielded：The shielding for being required to be obtained at frequency band 700-800MHz using the coaxial cable of good quality is imitated
Rate is that at least 75dB (grade A) is considered enough under the current standard.
In addition, using the conversion modulator only to work under 800MHz (in the future in 700MHz) wave band and may have pre-
The cost that the television channel distribution first arranged allows to obtain equipment reduces, and leads to the simplification of its circuit and function.
The mesh of the appended claims of the invention for being further characterized as being considered as the essential part of this specification
's.
Detailed description of the invention
According to referring specifically to attached drawing to the detailed description according to the method for the present invention with system and relevant device, the above mesh
Meeting become more apparent from, in the drawings：
- Fig. 1 shows the figure on the ground of known type and the reception system of satellite radio TV signal；
- Fig. 2 illustrates the table of frequency band, and the receiver of terrestrial broadcast television signal is able to carry out tuning under the frequency band；
- Fig. 3 illustrate according to the method for the present invention with ground used in reception system and satellite radio TV signal
Reception system figure；
The wave band that-Fig. 4 shows the Information Mobile Service of LTE type uses；
The wireless television signal that Figures 5 and 6 respectively illustrate Fig. 3 receives two different implementations of the conversion modulator of system
The respective block diagram of example.
Specific embodiment
By the job description of the distribution technology to coaxial cable as shown in Figure 3, the inventive solution that is proposed
Technical description and installation be obvious, it should be noted that wherein distribution has channel by satellite reception radiovision program
It is the channel (and channel of 700MHz wave band in future) for being assigned to the 800MHz wave band of LTE service.
It, may be via for example, due to the current state of the channel for being previously allocated to ground TV broadcast not used
Satellite transmits the TV programme (multiplexing or MUX) of nine different groups in the wave band 11-12GHZ for distributing to this service, and
The first intermediate frequency l is each transformed by therein after antenna system 1 receives themstIF wave band is (in DVB-S through QPSK tune
System, perhaps in DVB-S2 even modulated through 8-PSK) conversion it is (typical through DVB-T or DVB-T2 in UHF channel 61-69
COFDM modulation) in.The operation can be executed by equipment shown in Fig. 3, wherein the terminals 7 for satellite television channel
Each conversion modulator 9 is made of following：
One the first intermediate frequency 1 in the television channel by satellite broadcastingstTuner 20 in IF wave band；
Frame 21,22,23,24 (see Fig. 5) modulates the satellite radio TV signal tuned (in DVB-S from QPSK
When, either in DVB-S2, even 8-PSK is modulated) it is converted into COFDM modulation (DVB-T or DVB-T2)；
Subsequent frequency converter 25 can obtain output signal from conversion modulator 9, and the output signal includes
In television channel (8MHz wide) between the channel 69 that the centre frequency channel 61 for being 794MHz and centre frequency are 858MHz
One or be included in one in the television channel between channel 49 and channel 69 in the future.
Television receiver (iDTV and set-top box) due to that can receive entire UHF waveband (until channel 69) still exists
Sell, thus user can receive by satellite broadcasting but in channel (such as 61-69UHF of today) through COFDM modulation and
Converted the radiovision program (in frequency and modulation the two).
The detailed description of the function to conversion modulator 9 is provided in particular with reference to Fig. 5 below.
To received and turned in the low noise acoustical convertor 3 of antenna (parabola) in 11/12GHz wave band by satellite
It is as follows to change the feature operation carried out on the wireless television signal in the first intermediate frequency band (950-2150MHz)：
1) received signal is tuned in the first intermediate frequency band by means of tuner 20；
2) meet DVB-S2 standard when signal meets DVB-S standard by qpsk demodulator 21 or in received signal
When the output signal for carrying out self-tuner 20 is demodulated by demodulator QPSK or 8-PSK；
It 3) (is Viterbi when satellite-signal meets DVB-S standard relative to channel coding used in being transmitted in satellite
It (Viterbi) or when satellite-signal meets DVB-S2 standard is LDPC), Reed-Solomon decoding (meets in satellite-signal
When DVB-S standard) or BCH (when satellite-signal meets DVB-S2 standard), by means of decoder block 22 to from demodulator
21 output signal is decoded, and " descrambling " related data, to obtain the complete multiplexing transmitted by satellite；
4) component for constituting multiplexing is extracted in the first part for extracting block 23, by by means of (more acurrate in multiplexing
Say in SI/PSI table on ground) information that contains identifies each TV program, each of received TV programme may want to user
Component (video, audio and data) obtains PID (PID Packet Identifier) value for being assigned to the multiplexing by satellite transmission；Extracting block 23
Second part in recombination be possibly less than the multiplexing of received multiplexing, such as it is interested using only user, especially most important
Be radiovision program in the case where national television broadcast is horizontal and the multiplexing can be included in through DVB-T channel (or
DVB-T2 in the transmission capacity of CODFM modulation)；
5) it is encoded in coder block 24 according to multiplexing of the COFDM format to new recombination；
6) in frequency conversion block 25 to the output signal from coder block 24 through COFDM coding in channel 61-
Carry out frequency conversion in one in 69UHF (or future 49-69UHF).
The solution proposed is advantageous, this is because：
Compared with nowadays utilizing those of DTB Digital Terrestrial Broadcasting (DVB-T) broadcast, allows to increase and distribute in antenna facility
Television channel quantity, realize the reception that the common TV receiver possessed using user is carried out；
Block 20,21,22,23,24,25 can pass through reduce overall cost, it is necessary to generate only 800MHz wave band (and will
Carry out 700MHz wave band) in signal and be simplified, described piece for when signal meets DVB-S standard from QPSK or in institute
It receives and carries out the COFDM that conversion is modulated into DVB-T/T2 from QPSK or 8-PSK when signal meets DVB-S2 standard；
The authorization of-UHF channel 61-69 (UHF channel 49-69 in future) being used without through authorities, this be by
It is only used in private antenna diostribution device (domestic system) in these channels；
It can in a predetermined pattern or arbitrarily select, be based even on by the prioritization criteria of user's foundation and select nothing
Line TV programme are arranged in the MUX in UHF channel 61-69 (UHF channel 49-69 in future) included；If using following methods,
Then channel distribution is actually established during the installation of system by technician, and that takes into account the preferences of user；
Make it possible to for the TV service of user preference being placed in single multiplexing, promote from a program to another section
Purpose switching (change and turn) and the time for reducing the switching.In fact, if a TV service is changed change into it is next
Or previous TV service takes then compared with situation about being included in two different multiplexings in two services at two
In the case that business is included in same TV multiplexing, the switching time between a service and another service is shorter.
Compared with known solution, provides the advantage of simplify now suitable for generating according to the method for the present invention
UHF channel 61-69 or the tuner 20 for being suitable for generating the conversion modulator 9 for generating UHF channel 49-69 in the future, to reduce
The cost of conversion modulator 9.
In the first other embodiment of the transmission method of wireless television signal according to the present invention, in order to which simplification stays in
The operation executed in conversion modulator 9 as shown in Figure 3 and Figure 5, it can be assumed that by satellite transmission through QPSK modulate or
Through multiplexing 8-PSK modulation, having been divided into or can easily be divided into two parts when complying with standard DVB-S2.It is practical
On, the transmission capacity of the DVB-T channel of the 8MHz through COFDM modulation is up to about 30Mbit/s (see ETSI EN 300 744
Standard 1.5.1 editions Table A .l, (2004-11), page 40), it is the approximately half of of the transmission capacity of satellite repeater, warp
QPSK modulation can transmit 27.5 million symbols/second, i.e. 55Mbit/s.
First other embodiment includes：
In the transmission, it is multiplexed using statistics satellite operate in a specific manner, that is, it keeps two parts of multiplexing (partly multiple
It is kept constant at any time with the bit rate of each of A and half multiplexing B), rather than just the entirety of multiplexing.Common multiplexing is (non-
It is statistical) use simplify Transmission system, but do not allow optimally to utilize available bandwidth；
In the reception, using two conversion modulators 9 (or as shown in Figure 6 tool there are two export single conversion modulation
Device 9'), to by defending on (from being always available in channel 61-69UHF or future 49-69UHF) two different channels
Star receive with distribute can user-defined predetermined channel or two of multiplexing parts being programmed by computer product carry out
Conversion modulation, the computer product can upload to the memory of the conversion modulator 9 comprising it is such as following can be into one
Walk the part of the software code in the block 23 of the Fig. 5 explained.
In the second other embodiment of the transmission method of wireless television signal according to the present invention, satellite can be passed through
Transmit have for the common approximately half of wave band of DVB-S DVB-S2 standard multiplexing, with carry out QPSK demodulation (if
DVB-S) or QPSK/8-PSK (if DVB-S2) and COFDM re-modulation is carried out, without the conversion by Fig. 3 and 5
The processing of modulator 9, This further reduces complexity and cost.The solution is easy to implement but is detrimental to the transmission of satellite
Capacity.
It, can be to multiplexing in the third other embodiment of the transmission method of wireless television signal according to the present invention
Information is introduced in appropriate part, the information is via the memory that can be uploaded to the conversion modulator 9 and is included in
It is in the block 9 of the conversion modulator of Fig. 5, can be real via the software program product of 23 part of software code of satellite update
Show the automatic distribution of the UHF channel 61-69 for being re-modulated into COFDM format or UHF channel 49-69 in future, it is contemplated that
By the priority (importance) for the program that satellite is broadcasted with QPSK (or in DVB-S2 when 8-PSK) format.
Another advantage that the solution is related to is to simplify the work of antenna mounting technician, avoids and modulate in conversion
The erection stage of device 9 needs manual definition to export channel.It is assumed that nowadays cost larger shadow of the labor cost than equipment itself
The totle drilling cost for ringing installation determines that each service (one group of radiovision program) of multiplexing should be included in by actual broadcast company
Which can be advantageous on terrestrial television channel.
For example, undertaking the broadcaster that cannot be assigned to many services being individually multiplexed due to existing, these are wide
Each of Columbia Broadcasting System can distribute their all services in neighbouring multiplexing.Or this distribution of channel can
It is carried out by means of country appropriate (or international) agreement.In this case, broadcaster can by such information (that is,
The information of the channel of conversion modulation is executed on it) it is inserted into one in SI/PSI table present in multiplexing, conversion modulation
Device 9 can read the information in appropriate table and then can execute tuning automatically.
It should be noted that the SI table (information on services) limited by DVB and the PSI (program specific information) limited by MPEG are to retouch
The set of number information of transmission channel is stated, wherein service and its content must be transmitted：Relevant specification is ETSI EN 300
468.In DVB term, service for TV network (such as ARD), and in MPEG term, TV network is referred to as program.
In order to which third other embodiment presented herein is more fully described, two kinds of situations are mentioned (previously again
What the second and first other embodiment as transmission method was mentioned)：
A) in the second other embodiment, by the multiplexing of satellite transmission by overall transfer on terrestrial channel：But
In this case there can be the inefficient use of satellite bandwidth, this is because satellite multiplexing has the capacity about doubled and made
Meeting is only that multiplexed format (is met DVB- in received signal from QPSK when received signal meets DVB-S standard
It is modulated to needed for the COFDM format of DVB-T channel (or DVB-T2) when S2 standard from QPSK or 8-PSK) directly conversion
Those；
B) in the first other embodiment, the service being present in satellite multiplexing is distributed to from the ground disabled
On two or more terrestrial channels selected in channel.
In the first is assumed, (situation a) can be referred to entitled for the coincidence of the bandwidth between satellite and ground multiplexing
ETSI TR 101 211:"Digital Video Broadcasting(DVB)Guidelines on implementation
The document of and usage of Service Information (SI) ".The document have been directed to be transferred to cable network or
The example of the satellite service of fixed antenna device.When that occurs, the NIT table (network information table) of satellite passes through cable, that is, retouches
The table of the feature of the locating satellite channel of multiplexing is stated.Accordingly, it is possible to which the case where occurring is, wired or terrestrial decoder is (in master
In the case where antenna assembly) NIT table of the reception about satellite channel, and in this case the decoder should ignore institute
Table is stated, but current decoder will not be done so, or the event of actual decoder can be generated in the case where they do so
Barrier.
According to embodiments set forth herein, it is contemplated that be inserted not only through the NIT table about the multiplexing in satellite multiplexing
And insertion have signal must according to the specification of the terrestrial channel (DVB-T/T2) of its transmission (belong to positioned at downstream rather than
The specification of the channel of the network of upstream) NIT table.The situation is not provided in citation：According to the present invention, satellite decodes
Device can ignore the NIT table about terrestrial channel, and terrestrial decoder can ignore the NIT table about satellite multiplexing.
Therefore, it in the case where not changing specific SI/PSI in any way, will can call in automatically retired
(decommissioned) conversion modulator 9 is sent to needed for terrestrial channel and by the information that broadcaster selects.
(situation b), the only a part of the service (TV program) in satellite channel can be placed in retired in the second example
On terrestrial channel, and other services are assigned to other retired terrestrial channel (in UHF channel 61-69 or 49-69 in future
In).In this case, target floor channel must be limited for each service.Can with transmission with each service
The similar mode of settling mode of the problem of No. LCN associated (" logical channel number ") solves the situation.In fact, defending
In the NIT table of star multiplexing, it is inserted into indicating the descriptor of LCN associated with it for each service or radiovision program.It should
Descriptor is provided by MPEG or by DVB：But the flexibility of specific SI/PSI is utilized, it can be by the description
Symbol is added in the NIT table of satellite multiplexing in the form of (" the user-defined ") descriptor being defined by the user.According to the present invention,
Using another " user-defined " descriptor, similar device can be realized to specify the destination channel of each service.The description
Symbol can be ignored by all decoders, and can be by conversion modulator 9 exclusively with the mesh to understand all services with multiplexing
Mark channel.
Referring to Fig. 6, the another method for solving situation (b) can be as follows.It is not that new descriptor is added to satellite NIT table,
But other than common satellite NIT table, current satellite broadcaster can also provide in the case where no any modification
Two NIT tables relevant to two retired digital terrestrial channels that each service in reuse satellite can be transferred to (are based on
Above in relation to the design of situation (a) description：Transmission is located at the NIT table of the network in downstream).In other words, can exist and half multiplexing A phase
The NIT Table A of pass and NIT table B relevant to half multiplexing B.Each table includes data and the LCN column about digital terrestrial channel
Table, the table is placed in half multiplexing on the digital terrestrial channel.Satellite decoder can ignore the two tables, this is because
They are related to inconsistent network；But the table can be by having according to the present invention there are two output, with coordination mode work
Conversion modulator 9' come using：One portion identification half is multiplexed the service of A, they are encoded into COFDM format simultaneously in block 24a
And converted them in the digital terrestrial channel indicated by NIT Table A by block 25a, and another part mark half is multiplexed the clothes of B
They are encoded into COFDM format in block 24b and are converted them in the number indicated by NIT table B by block 25b by business
In terrestrial channel.Identical operation can be executed by two different conversion modulators, i.e., be not the conversion of dual output type
Modulator, still, in this case, the first conversion modulator 9 can have to cancel NIT table B, and the second conversion modulator 9
It can have to cancel NIT Table A, so that each digital terrestrial channel only includes relative NIT table, to avoid downstream is located at
Decoder DVB-T/T2 obscures.
Similar with conversion modulator 9, conversion modulator 9' also includes memory, including the software code partition in block 23
Software program product can be uploaded in the memory.
In the case where it does not depart from the intrinsic novelty principle of present inventive concept, as example description, for passing
The method and system and relevant transmitter, receiver system of wireless television signal that is defeated and receiving received terrestrial digital broadcasting type
System, conversion modulator and receiver have many possible modifications, this is because it is also clear that in its practical form of implementation
In, illustrated details may be different, and it can be by technically equivalent element substitution.
For example, in order to conversion modulator 9,9' provide be repositioned at Broadcast Terrestrial TV channel (UHF61-69 or
Person future UHF49-69) frequency band in various services (TV program) needed for information, exist using also belonging to SI/PSI race table
Other of other tables possible solution.
It is, for example, possible to use SDT (" service describing table ") or PAT (" Program Association Table "), introduce new descriptor.
Therefore, it can easily understand that, the present invention is not limited to be used for transmission and receive the wireless of received terrestrial digital broadcasting type
The method and system of TV signal and relevant transmitter, receiver system, conversion modulator and receiver, but can be
It does not depart from and carries out various changes, improvement, equivalent in the case where the present inventive concept as set forth in the following claims more preferably
The replacement of component and element.
Claims (21)
1. a kind of method for the wireless television signal for being used for transmission received terrestrial digital broadcasting type, the wireless television signal includes energy
Enough multiple radiovision programs being received by the receiver in special frequency band or service, wherein at least part of the frequency band is
The mobile phone service of LTE type is disabled and is assigned to through the wireless television signal to received terrestrial digital broadcasting type, wherein
The method is provided for transmission comprising capableing of received radiovision program or service, satellite type radiovision letter
Number, from being obtained in the satellite type wireless television signal in at least part of channel for being placed in and belonging to the frequency band
Received terrestrial digital broadcasting type wireless television signal, the wireless television signal of the received terrestrial digital broadcasting type be not radiation and
It is to send the receiver to by coaxial cable, the coaxial cable provides the guarantee of shielding, and the method includes following steps
Suddenly：
Receive the wireless television signal comprising the satellite type for capableing of received program or service；
By means of conversion modulator (9) to this radio comprising the satellite type for capableing of received program or service
Carry out conversion modulation depending on signal, the conversion modulator wireless television signal of the satellite type is decoded and by it
Be re-encoded as through COFDM modulate, to the decoded wireless television signal of TV signal receiver by DTB Digital Terrestrial Broadcasting；
It is only described wireless to being modulated through COFDM in at least part of radiovision channel for belonging to the frequency band
TV signal carries out frequency conversion, wherein the frequency band is 800MHz and 700MHz, and finally utilizes described at least part
In make a reservation for distribution television channel carry out frequency conversion.
2. according to the method described in claim 1, described in wherein being determined as the user of the receiver and being modulated through the COFDM
Distribution of the wireless television signal in at least part of radiovision channel of the frequency band.
3. according to the method described in claim 1, wherein the wireless television signal of the satellite type includes by the specific letter of program
The multiplexing of the table description of type or information on services type is ceased, in the table inserted with descriptor, the descriptor is for being
It is described can received program or service it is each specified include the frequency band described at least part in target believe
Road.
4. according to the method described in claim 1, wherein the wireless television signal of the satellite type includes by the specific letter of program
Cease the multiplexing of the table description of (PSI) type or information on services (SI) type, the multiplexing is divided into the first half multiplexings (A) and the
2 half multiplexings (B), each of described half multiplexing (A, B) is to contain each mesh in described at least part of the frequency band
Mark channel, and wherein in the table inserted with descriptor, the descriptor include can for it is described can be received wireless
The information of the specified respective objects channel of each of TV programme or service.
5. according to the method described in claim 4, wherein in the table inserted with the second descriptor, the second descriptor energy
It is enough specified with it is described being capable of each of received radiovision program or service associated logical channel number (LCN).
6. the method according to one in claim 3 to 5, wherein the table is that network information table (NIT) or service are retouched
State table (SDT) or Program Association Table (PAT).
7. according to the method described in claim 1, wherein the wireless television signal of the satellite type includes being believed by first network
Ceasing the multiplexing of the table description of table (NIT) type, the multiplexing is divided into the first half multiplexings (A) and the second half and is multiplexed (B), and its
In in the first half multiplexing (A) table inserted with the second network information table (NIT) type, the table can be described the first half
The radiovision program or service that are multiplexed (A) specify the destination channel in the described at least part for including the frequency band, and
And for it is described can received program or service each specify logical channel number (LCN), and wherein described the second half
It is multiplexed the table inserted with third network information table (NIT) type in (B), the table energy of third network information table (NIT) type
It is enough specified included in described at least part of the frequency band for the radiovision program or service of the second half multiplexing (B)
Destination channel and for the program or service each specify logical channel number (LCN).
8. according to the method described in claim 7, wherein using statistics satellite multiplexing technology the multiplexing is divided, wherein
The bit rate of the first half multiplexing (A) and described the second half multiplexing (B) is kept constant with the time.
9. a kind of be adapted to be the multiplexer for generating satellite type multiplexing, the satellite type multiplexing is designed to transmission ground
The wireless television signal of digital broadcasting type, the multiplexer include for implementing according to claim 1 to described in one in 8
Method unit.
10. a kind of transmitter for the signal for being adapted to be transmitting satellite type comprising multiplexing according to claim 9
Device.
11. a kind of method for receiving the wireless television signal of received terrestrial digital broadcasting type, the wireless television signal via
Satellite is received, and including contain multiple radiovision programs or service, satellite type multiplexing, the method includes with
Lower step：
A) wireless television signal of comprising the multiple radiovision program or service, described satellite type is received；
B) by least one conversion modulator (9,9') at least one of wireless television signal of the satellite type into
Row conversion modulation, the conversion modulator demodulate the wireless television signal of the satellite type, it is wide to convert thereof into ground digital
Broadcast the wireless television signal of type and the wireless television signal of the received terrestrial digital broadcasting type is inserted into belong to it is right
In at least part of channel of the frequency band of received terrestrial digital broadcasting disabling；
C) wireless television signal of the received terrestrial digital broadcasting type is distributed to antenna dissemination system via coaxial cable.
12. according to the method for claim 11, wherein the method is provided so that the part of software code is uploaded to institute
In the memory for stating at least one conversion modulator (9,9'), allows to be included in the radiovision via satellite reception and believe
Radiovision service or program in number are automatically allocated at least one described at least part of channel of the frequency band.
13. according to the method for claim 12, wherein the part of software code can pass through satellite by broadcaster
Signal update.
14. according to the method for claim 11, wherein at least one described conversion modulator (9,9') reads and is included in institute
State the descriptor in (PSI) table of the Program Specific Information type of multiplexing or the table of information on services (SI) type, the description
Symbol can specify destination channel for each of the radiovision program or service and generate DTB Digital Terrestrial Broadcasting type
The wireless television signal of wireless television signal, the DTB Digital Terrestrial Broadcasting type is inserted into channel, and the channel is to include
To be placed in the channel in the descriptor of all programs or service in the channel between those of instruction channel.
15. according to the method for claim 14, wherein at least one described conversion modulator (9,9') reads the second description
Symbol, second descriptor can specify and the associated logical channel number of each of the radiovision program or service
(LCN)。
16. according to the method for claim 15, wherein the table is network information table (NIT) or service describing table
(SDT) or Program Association Table (PAT).
17. according to the method for claim 11, wherein the multiplexing of the satellite type includes the first half multiplexings (A) and second
Half multiplexing (B), and wherein the reading two and half in network information table (NIT) of at least one described conversion modulator (9,9') is multiple
With one program in (A, B) or the destination channel of service, the wireless television signal of DTB Digital Terrestrial Broadcasting type is generated, it is described
The wireless television signal of DTB Digital Terrestrial Broadcasting type includes with one all clothes in described two half multiplexings (A, B)
Business or the new multiplexing of program, and the new multiplexing is inserted into the channel by the instruction of the network information table (NIT) table.
18. according to the method for claim 17, wherein at least one described conversion modulator (9,9') will with send out thereon
The relevant network information table of channel (NIT) table for penetrating signal is inserted into the new multiplexing, at the same delete be inserted with it is described two
Half is multiplexed the relevant network information table of another channel (NIT) table of (A, B).
19. a kind of for receiving the facility of the wireless television signal of received terrestrial digital broadcasting type comprising for implementing according to power
Benefit requires the unit of method of reseptance described in one in 1 to 8 and 11 to 18.
20. a kind of system for the wireless television signal for being used for transmission received terrestrial digital broadcasting type, the received terrestrial digital broadcasting type
Wireless television signal include the multiple radiovision programs that can be received by the receiver in certain frequency band or service, wherein institute
At least part in frequency band is stated to disable the wireless television signal of received terrestrial digital broadcasting type and be assigned to LTE class
The mobile phone service of type, the system comprises：
It is used for transmission comprising received radiovision program or service, the satellite type wireless television signal of capableing of
Unit；
For receiving the radio of the satellite type that be capable of received multiple radiovision programs or service comprising described in, described
Depending on the unit of signal；
For being modulated the list of the wireless television signal of the satellite type by means of the conversion of at least one conversion modulator (9,9')
Member, the conversion modulator (9,9') demodulate the wireless television signal of the satellite type and convert thereof into received terrestrial digital broadcasting
The wireless television signal of type；
For the received terrestrial digital broadcasting for capableing of received multiple TV programme or service will to be included by coaxial cable
The wireless television signal of type is distributed in the unit in antenna assignment facility, and described at least the one of the disabling frequency band is used only
Partial television channel.
21. a kind of system for the wireless television signal for being used for transmission received terrestrial digital broadcasting type, the wireless television signal include
It can be in certain frequency band by the received multiple radiovision programs of receiver or service, wherein according to claim to a method 1 to 8
With 11 to 18 in one described in, at least part in the frequency band is to the radiovision of received terrestrial digital broadcasting type
Signal disables and is assigned the mobile phone service of LTE type.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2013/074620 WO2015074728A1 (en) | 2013-11-25 | 2013-11-25 | Method and system for the transmission and reception of radiotelevision signals of the terrestrial digital broadcasting type, and related transmitter, receiver system, transmodulator and receiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105765888A CN105765888A (en) | 2016-07-13 |
| CN105765888B true CN105765888B (en) | 2018-11-23 |
Family
ID=49674289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380081177.2A Active CN105765888B (en) | 2013-11-25 | 2013-11-25 | It is used for transmission and receives the method and system and relevant transmitter, receiver system, conversion modulator and receiver of the wireless television signal of received terrestrial digital broadcasting type |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3075086A1 (en) |
| CN (1) | CN105765888B (en) |
| WO (1) | WO2015074728A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180093645A1 (en) * | 2016-09-30 | 2018-04-05 | Melanie Ochoa | Exterior Vehicle Heating System |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1326299A (en) * | 2000-03-01 | 2001-12-12 | 索尼公司 | TV signal distributor device, receiver device, transmitting system and method |
| CN1759606A (en) * | 2003-03-11 | 2006-04-12 | 汤姆森许可贸易公司 | Apparatus and method for distributing signals by down-converting to vacant channels |
| CN201312356Y (en) * | 2008-12-22 | 2009-09-16 | 沈逸林 | Digital television network media phone set terminal |
| CN101690225A (en) * | 2006-10-31 | 2010-03-31 | 汤姆森许可贸易公司 | Method and apparatus for manipulating bit streams |
| EP2182731A2 (en) * | 2008-10-29 | 2010-05-05 | Televes, S.A. | Device and method for dividing a MPEG2-TS transport frame |
| CN102972057A (en) * | 2010-03-31 | 2013-03-13 | 索尼公司 | Method of reducing interference and corresponding base station, network and system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1337112B1 (en) * | 2002-02-14 | 2012-03-14 | RAI RADIOTELEVISIONE ITALIANA (S.p.A.) | Process for transmitting digital television signals for multi-frequency terrestrial digital networks (DVB-T) |
| GB201000212D0 (en) * | 2010-01-07 | 2010-02-24 | Pace Plc | Broadcast distribution apparatus and method of use thereof |
-
2013
- 2013-11-25 CN CN201380081177.2A patent/CN105765888B/en active Active
- 2013-11-25 WO PCT/EP2013/074620 patent/WO2015074728A1/en active Application Filing
- 2013-11-25 EP EP13796046.4A patent/EP3075086A1/en not_active Ceased
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1326299A (en) * | 2000-03-01 | 2001-12-12 | 索尼公司 | TV signal distributor device, receiver device, transmitting system and method |
| CN1759606A (en) * | 2003-03-11 | 2006-04-12 | 汤姆森许可贸易公司 | Apparatus and method for distributing signals by down-converting to vacant channels |
| CN101690225A (en) * | 2006-10-31 | 2010-03-31 | 汤姆森许可贸易公司 | Method and apparatus for manipulating bit streams |
| EP2182731A2 (en) * | 2008-10-29 | 2010-05-05 | Televes, S.A. | Device and method for dividing a MPEG2-TS transport frame |
| CN201312356Y (en) * | 2008-12-22 | 2009-09-16 | 沈逸林 | Digital television network media phone set terminal |
| CN102972057A (en) * | 2010-03-31 | 2013-03-13 | 索尼公司 | Method of reducing interference and corresponding base station, network and system |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3075086A1 (en) | 2016-10-05 |
| WO2015074728A1 (en) | 2015-05-28 |
| CN105765888A (en) | 2016-07-13 |
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