Utility model content
Technical problem to be solved in the utility model is, for there being the shortcoming that cost is high and installation is complicated in above-mentioned prior art, a kind of multiple satellite signal receiving apparatus is provided, user can select according to hobby separately the program of different satellites, and the selection between user is independent of each other, have cost low, realize simple advantage.
The utility model solves the technical scheme that its technical problem adopts, a kind of multiple satellite signal receiving apparatus is provided, comprise: at least two satellite earth antennas and matching with satellite earth antenna and tuner that quantity equates, each tuner connects corresponding satellite earth antenna, wherein, also comprise: the channel stacked switch CSS equating with satellite earth antenna quantity and a frequency mixer, the output of each tuner is connected to the input of described frequency mixer by corresponding channel stacked switch CSS, the output of described frequency mixer is for junctor top box, wherein:
Described satellite earth antenna is used for receiving corresponding high frequency satellite-signal; Described tuner respectively to described high frequency satellite-signal amplify, down conversion process, output intermediate-freuqncy signal; Described channel stacked switch CSS modulates described intermediate-freuqncy signal respectively, exports the modulation signal of different frequency range in preset bandwidth; Described frequency mixer mixes the modulation signal of different frequency to form the band signal of having a lot of social connections.
Wherein, also comprise the filter equating with satellite earth antenna quantity, each filter is connected between tuner and the channel stacked switch CSS of correspondence.
Wherein, described channel stacked switch CSS modulates described intermediate-freuqncy signal respectively, makes the frequency band of each modulation signal be positioned at the incoming frequency scope of digital video broadcast for cable DVB-C or is the original frequency band of described incoming frequency scope.
Wherein, described channel stacked switch CSS stores the configuration parameter of target satellite.
Wherein, described configuration parameter comprises frequency, signal strength signal intensity and modulation system.
Correspondingly, the utility model also provides multiple satellite signal receiving system, comprises device as above and Set Top Box, and described Set Top Box is connected with the output of frequency mixer in described device.
Wherein, also comprise controller, described controller is positioned at described Set Top Box, for controlling corresponding channel stacked switch CSS, resets the configuration parameter of channel stacked switch CSS.
Implement the utility model, there is following beneficial effect:
The high frequency satellite-signal that tuner receives satellite earth antenna amplifies, after down conversion process, output intermediate-freuqncy signal, channel stacked switch CSS modulates described intermediate-freuqncy signal, export the modulation signal of different frequency range in preset bandwidth, frequency mixer mixes the modulation signal of different frequency to form the band signal of having a lot of social connections, and described broadband signal accesses multiple Set Top Box.Adopt the present invention, after Set Top Box is connected with coaxial cable, user can select according to hobby separately the program of different satellites, and selection between user is independent of each other, have cost low, realize simple advantage.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Referring to Fig. 1, it is the structural representation of a kind of multiple satellite signal receiving apparatus of the utility model embodiment, for convenience of description, the quantity of choosing satellite earth antenna in the utility model embodiment is 3, but the utility model does not limit the quantity of satellite earth antenna, described quantity should be determined according to actual needs.In the utility model embodiment, described device 1 comprises: 3 satellite earth antennas (11,12,13), the tuner 21 matching with satellite earth antenna 11, the tuner 22 matching with satellite earth antenna 12, the tuner 23 matching with satellite earth antenna 13, the channel stacked switch CSS(31,32,33 equating with satellite earth antenna quantity) and frequency mixer 41.
The annexation of above-mentioned device is: the output of each satellite earth antenna is connected to the input of corresponding tuner, the output that is satellite earth antenna 11 is connected with the input of tuner 21, the output of satellite earth antenna 12 is connected with the input of tuner 22, and the output of satellite earth antenna 13 is connected with the input of tuner 23; The output of each tuner is connected to the input of frequency mixer 41 by corresponding channel stacked switch CSS, it is the output of tuner 21 is connected to frequency mixer 41 input by channel stacked switch CSS31, the output of tuner 22 is connected to the input of frequency mixer 41 by channel stacked switch CSS32, the output of tuner 23 is connected to the input of frequency mixer 41 by channel stacked switch CSS33; Output junctor top box or the receiver of frequency mixer 41.
The high frequency satellite-signal that satellite earth antenna (11,12,13) is launched for receiving corresponding satellite, conventionally, on a satellite, generally there are C and Ku band transponder, the frequency range of C-band is 3.7~4.7GHz, generally need the antenna reception of more than 1 meter diameter, the frequency range of Ku wave band is 11.7~12.75GHz, receives required antenna diameter and wants less, and 1 meter following.Tuner (21, 22, 23) respectively described high frequency satellite-signal is amplified, down conversion process, output intermediate-freuqncy signal, for example, the high frequency satellite-signal that tuner 21 receives satellite earth antenna 11 amplifies, after down conversion process, export intermediate-freuqncy signal XH1, the high frequency satellite-signal that tuner 22 receives satellite earth antenna 12 amplifies, after down conversion process, export intermediate-freuqncy signal XH2, the high frequency satellite-signal that tuner 23 receives satellite earth antenna 13 amplifies, after down conversion process, export intermediate-freuqncy signal XH3, conventionally, the incoming frequency scope of satellite receiver is 950MHz~2150MHz, channel stacked switch CSS(31, 32, 33) respectively described intermediate-freuqncy signal is modulated, export the modulation signal of different frequency range in preset bandwidth, for convenience of description, it is example that the preset bandwidth of the utility model embodiment is got 950MHz~2150MHz, but the utility model does not limit this preset bandwidth, concrete bandwidth can arrange described preset bandwidth according to actual needs, for example, the frequency band of intermediate-freuqncy signal XH1 is 960MHz~1150MHz, the frequency band of intermediate-freuqncy signal XH2 is 1350MHz~1550MHz, the frequency band of intermediate-freuqncy signal XH3 is 1750MHz~1950MHz, wherein, after processing, the signal channel stacked switch CSS of same satellite earth antenna generates the signal of multichannel different frequency range, therefore be independent of each other when different user selected channel, frequency mixer 41 mixes the modulation signal of different frequency (XH1, XH2 and XH3) to form the band signal of having a lot of social connections, and can transfer to different Set Top Box or receiver through a coaxial cable.
Adopt the utility model embodiment, the high frequency satellite-signal that tuner receives satellite earth antenna amplifies, after down conversion process, output intermediate-freuqncy signal, channel stacked switch CSS modulates described intermediate-freuqncy signal, export the modulation signal of different frequency range in preset bandwidth, frequency mixer mixes the modulation signal of different frequency to form the band signal of having a lot of social connections, after Set Top Box is connected with coaxial cable, user can select according to hobby separately the program of different satellites, have cost low, realize simple advantage, and selection between user is independent of each other.
As one preferred embodiment, described multiple satellite signal receiving apparatus also can comprise the filter equating with satellite earth antenna quantity, each filter is connected between tuner and the channel stacked switch CSS of correspondence, for the noise of filtering intermediate-freuqncy signal.
As one preferred embodiment, channel stacked switch CSS(31,32,33) respectively the intermediate-freuqncy signal of corresponding tuner (21,22,23) output is carried out to modulation treatment, make the frequency band of each modulation signal be positioned at the incoming frequency scope of digital video broadcast for cable DVB-C or be the original frequency band of described incoming frequency scope, make the Set Top Box of terminal D VB-C can receive DVB-C and satellite-signal simultaneously.
As one preferred embodiment, described channel stacked switch CSS stores the configuration parameter of target satellite, and described configuration parameter comprises frequency, signal strength signal intensity and modulation system.
Referring to Fig. 2, it is the structural representation of a kind of multiple satellite signal receiving system of the utility model embodiment, in the utility model embodiment, system 2 comprises multiple satellite signal receiving apparatus 1 and Set Top Box 3, and Set Top Box 3 is connected with the output of frequency mixer 41 in device.Set Top Box 3 is for sending channel selection instruction and receiving satellite received signal corresponding to described channel, and outputting video signal after described signal is carried out demodulation etc. and processed, by terminal plays such as television sets.
Preferably, also comprise controller 31, controller 31 is positioned at Set Top Box 3, as shown in Figure 3, is the structural representation of a kind of Set Top Box in Fig. 2.Controller 31, for controlling corresponding channel stacked switch CSS, resets the configuration parameter of channel stacked switch CSS.More specifically, one of them Set Top Box can be set and there is this function of configuration parameter that channel stacked switch CSS is set, input relevant control instruction by user and be configured.
Adopt the utility model embodiment, multiple Set Top Box are connected with the output of multiple satellite signal receiving apparatus by same coaxial cable, user can select according to hobby separately the program of different satellites, have cost low, realize simple advantage, and selection between user is independent of each other.
Above disclosed is only preferred embodiment of the present utility model, certainly can not limit with this interest field of the utility model, one of ordinary skill in the art will appreciate that all or part of flow process that realizes above-described embodiment, and the equivalent variations of doing according to the utility model claim, still belong to the scope that utility model contains.