CN101404761A - Indoor covering method and system for mobile multimedia broadcast - Google Patents
Indoor covering method and system for mobile multimedia broadcast Download PDFInfo
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- CN101404761A CN101404761A CNA2008100712208A CN200810071220A CN101404761A CN 101404761 A CN101404761 A CN 101404761A CN A2008100712208 A CNA2008100712208 A CN A2008100712208A CN 200810071220 A CN200810071220 A CN 200810071220A CN 101404761 A CN101404761 A CN 101404761A
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Abstract
The invention relates to an indoor covering method for mobile multimedia broadcast and a system thereof. The method comprises the following steps: wireless digital television signals are mixed into the signals of the cable of a cable television and transmitted to inside, then the wireless digital television signals are filtered from the mixed signals which are output from the indoor cable interface of the cable television, and then the wireless digital television signals are covered indoors by wireless transmitting method. The method and the system can realize indoor covering of the mobile multimedia signals and ensure handheld or portable devices to receive multimedia signals indoors, thus enlarging the using range of the mobile multimedia greatly; and the realize method is simple and the cost is low.
Description
Technical field
The present invention relates to the transmission of mobile multimedia signal, specifically be meant indoor covering method of a kind of Mobile Multimedia Broadcasting and system.
Background technology
At present, the implementation method of mobile multimedia mainly contains two kinds: the one, and utilize mobile communications network that the mobile multimedia service is provided, mainly be to adopt the mode of Streaming Media to transmit; The 2nd, realize the mobile multimedia service by radio network.Can realize the mobile phone TV services transfer function though utilize mobile communication technology, but pay the cost that takies bi-directional symmetrical channel width possibly, certainly take means such as orientation or multicast, but under the situation that service-user quantity sharply increases, the cost of network service and QoS still are difficult to reasonable guarantee.In fact, the transmission of big capacity multimedia service such as video is asymmetric to the requirement of network, it is up to be that the downlink data amount is far longer than, descending employing broadcast mode preferably, broadcast transmitted amount quantitative limitation almost of no use all has clear superiority at aspects such as resource utilizations such as program and frequency spectrum, system user capacity and operating costs.
Present digital television program has two kinds of transmission meanss: a kind of is cable transmission mode, i.e. cable TV; Another kind is a wireless transmission method, and wireless transmission comprises satellite, terrestrial wireless broadcast dual mode.The Digital Television that adopts wireless transmission method to realize is exactly a kind of modal mobile multimedia.
Digital television signal with the wireless mode transmission, usually only cover outdoor space, and can't cover the interior space, thereby, hand-hold type or portable mobile TV receiving equipment are difficult in indoor use, and this just makes hand-hold type mobile TV receiving equipment have great limitation on the scope of application.
Summary of the invention
The invention provides indoor covering method of a kind of Mobile Multimedia Broadcasting and system, its main purpose is to overcome and existing is difficult in the covering chamber with the mobile multimedia signal, thereby various hand-hold type or portable set are difficult to the shortcoming in indoor use.
The present invention adopts following technical scheme:
The indoor covering method of a kind of Mobile Multimedia Broadcasting comprises: 1) the wireless digital TV-set signal is sneaked in the signal of cable television, and transfer to indoor through cable of cable TV; 2) from the mixed signal of indoor cable television, leach the wireless digital TV-set signal, and will adopt the wireless transmission mode to make in this wireless digital TV-set signal covering chamber again after its amplification.
The indoor covering method of aforementioned a kind of Mobile Multimedia Broadcasting, its step 1) can have following three kinds of concrete schemes:
One, receive the wireless digital TV-set signal at building external application ground digital television repeater, the wireless digital TV-set signal that ground digital television repeater is received by signal mixer is sneaked in the signal of building cable television again, through the building cable television, the wireless digital TV-set signal is transferred to each chamber of building with cable TV signal.
Two, at the cable TV signal front end, utilize signal mixer the wireless digital TV-set signal to be sneaked in the signal of cable television,, the wireless digital TV-set signal is transferred to the cable TV subscriber with cable TV signal through the cable TV signal transmission distribution network.
Three, by cable the wireless digital TV-set signal is transferred to the building inlet, by signal mixer the wireless digital TV-set signal is blended in the cable television signal of building again.
A kind of Mobile Multimedia Broadcasting indoor covering system is characterized in that comprising: the cable TV signal source, by cable television transmission cable TV signal; The wireless digital TV-set signal source sends the wireless digital TV-set signal by wireless mode; Signal mixer is located at the building inlet, the wireless digital TV-set signal is sneaked in the signal of cable television; Building cable TV signal distribution system is sent to mixed cable TV signal of signal mixer and wireless digital TV-set signal in each room of building by the cable television distribution; TV signal frequency-selecting emitter is connected with cable television in the room, therefrom leaches the wireless digital TV-set signal, and adopts the wireless transmission mode again after it is amplified, and makes in this wireless digital TV-set signal covering chamber.
Aforementioned a kind of Mobile Multimedia Broadcasting indoor covering system, its building inlet also is provided with a ground digital television repeater, is used to receive the wireless digital TV-set signal, and this ground digital television repeater output is connected by cable with described signal mixer.
Aforementioned a kind of Mobile Multimedia Broadcasting indoor covering system, its wireless digital TV-set signal source also send the wireless digital TV-set signal by cable, and this cable is connected with the signal mixer of building, and the wireless digital TV-set signal is sent to signal mixer.
Aforementioned a kind of Mobile Multimedia Broadcasting indoor covering system, its TV signal frequency-selecting emitter comprises frequency-selecting module, signal amplification module, filtration module, supply module and transmitting antenna at least, wherein, the frequency-selecting module is selected the TV signal in the cable television, select required wireless digital TV-set signal, this signal through the signal amplification module amplify, filtration module carry out filtering after by transmission antennas transmit with covering chamber in, supply module is each several part power supply.
Further, described TV signal frequency-selecting emitter also comprises remote control receiver module and regulating and controlling module, the regulating and controlling module realizes gain-adjusted control and the frequency-conversion processing to the signal amplification module, the remote control receiver module receives the remote signal of remote controller, and carries out the action of on/off and same frequency or frequency conversion that the control signal amplification module carries out signal are amplified by regulating and controlling module controls supply module.
A kind of Mobile Multimedia Broadcasting indoor covering system, comprise: the cable TV signal source, by cable television transmission cable TV signal, and utilize signal mixer to sneak into the wireless digital TV-set signal at the front end of cable TV signal, through the cable TV signal transmission distribution network, the wireless digital TV-set signal is transferred to building with cable TV signal; Building cable TV signal distribution system is sent to cable TV signal and wireless digital TV-set signal in each room of building by the distribution of building cable television; TV signal frequency-selecting emitter is connected with cable television in the room, therefrom leaches the wireless digital TV-set signal and with the wireless mode emission, makes in the wireless digital TV-set signal covering chamber.
By the above-mentioned description of this invention as can be known, compare with prior art, the present invention has following advantage: one, can realize that the mobile multimedia signal is in indoor covering, make various hand-hold types or the portable set can be, thereby improved the scope of application of mobile multimedia greatly at indoor reception mobile multimedia signal; Two, implementation method is simple, realizes that cost is low.
Description of drawings
Fig. 1 is the system configuration schematic diagram of the embodiment of the invention one;
Fig. 2 is the system configuration schematic diagram of the embodiment of the invention two;
Fig. 3 is the system configuration schematic diagram of the embodiment of the invention three;
Fig. 4 constitutes schematic diagram for the circuit of TV signal frequency-selecting emitter of the present invention.
Embodiment
The specific embodiment of the present invention is described with reference to the accompanying drawings.
Embodiment one
With reference to Fig. 1, a kind of Mobile Multimedia Broadcasting indoor covering system comprises wired TV signal source 1, wireless digital TV-set signal source 2 and is installed on signal mixer 3, ground digital television repeater 4, the building television signal distribution system 5 of building 100 inlet and is installed on indoor cable TV interface 6, TV signal frequency-selecting emitter 7 in each rooms 10 of building 100.
Cable TV signal source 1 is by cable television transmission cable TV signal, and wireless digital TV-set signal source 2 sends the wireless digital TV-set signal by wireless mode.Here said cable TV signal and wireless digital TV-set signal are meant the TV signal of transmitting with wired mode and wireless mode in the prior art, and the two adopts different Channel Modulation methods respectively to signal.In the present embodiment, " wireless digital TV-set signal " only is a kind of common name to the signal of modulating according to the terrestrial transmission channel, and is not to propagate by wireless mode.
Ground digital television repeater 4 is installed in building 100 inlet, is used to receive the wireless digital TV-set signal that wireless digital TV-set signal source 2 sends with wireless mode, and the output of this ground digital television repeater 4 and described signal mixer 3 are connected by cable.
The workflow of above-mentioned Mobile Multimedia Broadcasting indoor covering system may further comprise the steps: one, to each building 100 transmission cable TV signal, wireless digital TV-set signal source 2 sends the wireless digital TV-set signal with wireless mode by cable television in cable TV signal source 1; Two, the ground digital television repeater 4 of building 100 receives the wireless digital TV-set signal that wireless digital TV-set signal source 2 sends with wireless mode, and sends this signal to signal mixer 3 by the cable connection; Three, signal mixer 3 is sneaked into the wireless digital TV-set signal of ground digital television repeater 4 outputs in the signal of cable television, and transfers in each room 10 by cable television; Four, leach required wireless digital TV-set signal the mixed signal of cable television interface 6 outputs of the TV signal frequency-selecting emitter 7 in each room 10 in each room 10, and make in this wireless digital TV-set signal covering chamber with the wireless transmission mode.
With reference to Fig. 4, this TV signal frequency-selecting emitter 7 comprises frequency-selecting module 71, signal amplification module 72, filtration module 73, transmitting antenna 74, supply module 75, remote control receiver module 76 and regulating and controlling module 77.Wherein, frequency-selecting module 71 is connected with indoor cable TV interface 6 in the described room 10, TV signal in the cable television is selected, select the frequency range of wireless digital TV-set signal wherein, amplify through signal amplification module 72, filtration module 73 carries out being launched with in the covering chamber by transmitting antenna 74 after the filtering, supply module 75 is the each several part power supply, regulating and controlling module 77 realizes gain-adjusted control and the frequency-conversion processing to signal amplification module 72, remote control receiver module 76 receives the remote signal of remote controllers, and carries out the action of on/off and same frequency or frequency conversion that control signal amplification module 72 carries out signal are amplified by regulating and controlling module 77 control supply modules 75.
Embodiment two
With reference to Fig. 2, the system of present embodiment and embodiment one are basic identical, difference is: the wireless digital TV-set signal source 2 in the present embodiment directly sends to building 100 by cable with the wireless digital TV-set signal, again by signal mixer 3, the wireless digital TV-set signal is sneaked in the signal of cable television, be sent in each room 10 of building 100 via building television signal distribution system 5 again.。The structure of other parts and operation principle are identical with embodiment one.
Embodiment three
With reference to Fig. 3, the system of present embodiment and embodiment one are basic identical, difference is: the wireless digital TV-set signal of the wireless digital TV-set signal source 2 in the present embodiment directly mixes with cable TV signal by signal mixer 3 at the signal front end in cable TV signal source 1, transfer to the building television signal distribution system 5 of building 100 again through CATV transmission distribution network 4, thereby do not have the ground digital television repeater among the embodiment one.
The realization of the foregoing description one is fairly simple, can carry out single building, the cooperation that need not television operator can realize voluntarily, can be used as a kind of transitional execution mode, though and the realization of embodiment two need not the cooperation of television operator, but need possess the cable that sends the wireless digital TV-set signal,, need the television operator unified planning to realize though the enforcement of embodiment three is simple.
Above-mentioned only is the specific embodiment of the present invention, but design concept of the present invention is not limited thereto, and allly utilizes this design that the present invention is carried out the change of unsubstantiality, all should belong to the behavior of invading protection range of the present invention.
Claims (10)
1, the indoor covering method of a kind of Mobile Multimedia Broadcasting is characterized in that comprising:
1) the wireless digital TV-set signal is blended in the signal of cable television and transfers to indoor;
2) from the mixed signal of indoor cable television interface output, leach the wireless digital TV-set signal, and make in this wireless digital TV-set signal covering chamber with the wireless transmission mode.
2, the indoor covering method of a kind of Mobile Multimedia Broadcasting as claimed in claim 1, it is characterized in that described step 1) further comprises: receive the wireless digital TV-set signal at the outdoor use ground digital television repeater, the wireless digital TV-set signal that ground digital television repeater is received by signal mixer is sneaked in the signal of cable television again, transfers to indoor with cable TV signal.
3, the indoor covering method of a kind of Mobile Multimedia Broadcasting as claimed in claim 1, it is characterized in that described step 1) further comprises: the front end in the cable TV signal source, by signal mixer the wireless digital TV-set signal is blended in the signal of cable television, transmits with cable TV signal.
4, the indoor covering method of a kind of Mobile Multimedia Broadcasting as claimed in claim 1, it is characterized in that described step 1) further comprises: at the outdoor cable transmission wireless digital TV-set signal that passes through, to be blended in the signal of cable television by the wireless digital TV-set signal of cable transmission by signal mixer again, transfer to indoor with cable TV signal.
5, a kind of Mobile Multimedia Broadcasting indoor covering system is characterized in that comprising:
The cable TV signal source is by cable television transmission cable TV signal;
The wireless digital TV-set signal source sends the wireless digital TV-set signal by wireless mode;
Signal mixer is located at the building inlet, the wireless digital TV-set signal is sneaked in the signal of building cable TV signal distribution system cable;
Building cable TV signal distribution system is sent to mixed cable TV signal of signal mixer and wireless digital TV-set signal in each room of building by the cable television distribution;
TV signal frequency-selecting emitter is connected with cable television in the room, therefrom leaches the wireless digital TV-set signal and launches with wireless mode, makes in the signal covering chamber.
6, a kind of Mobile Multimedia Broadcasting indoor covering system as claimed in claim 5, it is characterized in that: described building inlet also is provided with a ground digital television repeater, be used to receive the wireless digital TV-set signal, this ground digital television repeater output is connected by cable with described signal mixer.
7, a kind of Mobile Multimedia Broadcasting indoor covering system as claimed in claim 5, it is characterized in that: described wireless digital TV-set signal source also is connected with the signal mixer of each building by cable, by cable the wireless digital TV-set signal is sent to signal mixer.
8, a kind of Mobile Multimedia Broadcasting indoor covering system as claimed in claim 5, it is characterized in that: described TV signal frequency-selecting emitter comprises frequency-selecting module, signal amplification module, filtration module, supply module and transmitting antenna at least, wherein, the frequency-selecting module is selected the TV signal in the cable television, select wireless digital TV-set signal wherein, through the signal amplification module amplify, filtration module carry out filtering after by transmission antennas transmit with covering chamber in, supply module is each several part power supply.
9, a kind of Mobile Multimedia Broadcasting indoor covering system as claimed in claim 8, it is characterized in that: also comprise remote control receiver module and regulating and controlling module, the regulating and controlling module realizes gain-adjusted control and the frequency-conversion processing to the signal amplification module, the remote control receiver module receives the remote signal of remote controller, and carries out the action of on/off and same frequency or frequency conversion that the control signal amplification module carries out signal are amplified by regulating and controlling module controls supply module.
10, a kind of Mobile Multimedia Broadcasting indoor covering system is characterized in that comprising:
The cable TV signal source, send cable TV signal by cable television, and sneak into the wireless digital TV-set signal through signal mixer at cable TV signal source front end, the wireless digital TV-set signal is transmitted by cable television with cable TV signal;
Building cable TV signal distribution system will be sent in each room of building by the distribution of building cable television through the cable TV signal and the wireless digital TV-set signal of cable television transmission;
TV signal frequency-selecting emitter is connected with cable television in the room, therefrom leaches the wireless digital TV-set signal and with the wireless mode emission, makes in the signal covering chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100712208A CN101404761A (en) | 2008-06-11 | 2008-06-11 | Indoor covering method and system for mobile multimedia broadcast |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100712208A CN101404761A (en) | 2008-06-11 | 2008-06-11 | Indoor covering method and system for mobile multimedia broadcast |
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| CN101404761A true CN101404761A (en) | 2009-04-08 |
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| CNA2008100712208A Pending CN101404761A (en) | 2008-06-11 | 2008-06-11 | Indoor covering method and system for mobile multimedia broadcast |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102045533A (en) * | 2009-10-19 | 2011-05-04 | 星辰先创通信系统(厦门)有限公司 | Method for implementing indoor coverage of television signals by using indoor mobile communication distribution system |
| CN102595433A (en) * | 2012-03-17 | 2012-07-18 | 无锡天联地网科技有限公司 | China mobile multimedia broadcasting (CMMB) signal indoor coverage method |
| CN102984466A (en) * | 2011-09-06 | 2013-03-20 | 上海东方明珠广播电视研究发展有限公司 | A system and a method for terrestrial-cable transition |
| CN103064295A (en) * | 2011-10-18 | 2013-04-24 | 星辰先创通信系统(厦门)有限公司 | Method of setting, inquiring and uploading working parameter of radio frequency repeater device |
| CN107371070A (en) * | 2017-07-21 | 2017-11-21 | 广州珠江移动多媒体信息有限公司 | A kind of method that digital television signal mends point optimization covering |
-
2008
- 2008-06-11 CN CNA2008100712208A patent/CN101404761A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102045533A (en) * | 2009-10-19 | 2011-05-04 | 星辰先创通信系统(厦门)有限公司 | Method for implementing indoor coverage of television signals by using indoor mobile communication distribution system |
| CN102045533B (en) * | 2009-10-19 | 2014-06-04 | 星辰先创通信系统(厦门)有限公司 | Method for implementing indoor coverage of television signals by using indoor mobile communication distribution system |
| CN102984466A (en) * | 2011-09-06 | 2013-03-20 | 上海东方明珠广播电视研究发展有限公司 | A system and a method for terrestrial-cable transition |
| CN102984466B (en) * | 2011-09-06 | 2015-05-06 | 上海东方明珠广播电视研究发展有限公司 | A system and a method for terrestrial-cable transition |
| CN103064295A (en) * | 2011-10-18 | 2013-04-24 | 星辰先创通信系统(厦门)有限公司 | Method of setting, inquiring and uploading working parameter of radio frequency repeater device |
| CN103064295B (en) * | 2011-10-18 | 2015-11-25 | 星辰先创通信系统(厦门)有限公司 | A kind of radio frequency directly puts the method that equipment carries out arranging its running parameter of inquiry unloading |
| CN102595433A (en) * | 2012-03-17 | 2012-07-18 | 无锡天联地网科技有限公司 | China mobile multimedia broadcasting (CMMB) signal indoor coverage method |
| CN102595433B (en) * | 2012-03-17 | 2014-04-30 | 无锡天联地网科技有限公司 | China mobile multimedia broadcasting (CMMB) signal indoor coverage method |
| CN107371070A (en) * | 2017-07-21 | 2017-11-21 | 广州珠江移动多媒体信息有限公司 | A kind of method that digital television signal mends point optimization covering |
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Open date: 20090408 |