CN101557507A - Low-noise frequency demultiplier and outdoor receiving device - Google Patents
Low-noise frequency demultiplier and outdoor receiving device Download PDFInfo
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- CN101557507A CN101557507A CNA2008100889602A CN200810088960A CN101557507A CN 101557507 A CN101557507 A CN 101557507A CN A2008100889602 A CNA2008100889602 A CN A2008100889602A CN 200810088960 A CN200810088960 A CN 200810088960A CN 101557507 A CN101557507 A CN 101557507A
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Abstract
The invention discloses a low-noise frequency demultiplier and an outdoor receiving device. The low-noise frequency demultiplier comprises a receiving element group, a frequency reduction element group, a memory storage medium and a processor, wherein the memory storage medium stores a plurality of preset data; the processor reads a plurality of preset data of the memory storage medium and regulates the oscillating frequency of the frequency reduction element group according to the preset data when operating under an installation mode; and the frequency reduction element group generates a plurality of frequency demultiplication signals according to the oscillating frequency. The invention enables the outdoor receiving device to be more convenient to install.
Description
Technical field
The present invention relates to a kind of lnb, particularly a kind of installation that makes outdoor receiving device is lnb more easily.
Background technology
The applied satellite system comes the technology of broadcast TV program for propagating the technology that the dealer uses always.Fig. 1 shows the broadcasting-satellite system Organization Chart.102 emissions of terrestrial broadcasting station are loaded with the radio frequency (RadioFrequency of programme information; RF) signal 104 is delivered on the satellite 106 with cochain (uplink) frequency band.Has a plurality of commentaries on classics device (transponder) frequently on the satellite 106, for the relaying of satellite communication is used, after radiofrequency signal can being amplified, is transformed into down chain (downlink) frequency, emission earthward after power amplification again, the programme information that the following chain frequency band by about 10.7GHz-12.75Hz will change behind the frequency is passed ground disc-shaped antenna (parabolic antenna) 110 back.For fully using frequency range, satellite-signal 108 may be polarization satellite-signal, i.e. H (Horizontal) or V (Vertical).The waveguide pipe 112 that is positioned at disc-shaped antenna 110 focuses is collected satellite-signal 108, again by lnb (low noise block converter; LNB) 114 signal reduced to intermediate frequency (the Intermediate Frequency of about 950MHz-2150MHz; IF) frequency range.The signal of reducing to the intermediate frequency frequency range can be transferred to each user's Rcv decoder (Integrated Receiver and Decoder by coaxial cable (coaxial cable) 116; IRD) 118a-118n can play by display 120a-120n through decoded signal.Rcv decoder 118 can be accepted the channel selecting signal of user's input, and then makes lnb 114 and Rcv decoder 118 receive the signal of selected channel.
The method of known installation disc-shaped antenna is that installation personnel is with the orientation of antenna, the direction that angle roughly is adjusted to satellite.Receiving along the synchronous satellite of equator operation as the Taiwan desire then needs antenna Souteern Exposure roughly.Then according to of the elevation angle and the direction adjustment of different satellites with respect to reception ground.How lnb is together connected for accurately adjusting antenna horizon elevation angle and azimuth, fixing up an aerial wire, whether installation personnel and the signal that needs receive with Instrumental Analysis such as spectrum analyzer, dB instrument are the satellite that receives from institute's desire.If there not being situation downward modulation line all day of spectrum analyzer, as situations such as the user adjust voluntarily, then the user needs antenna to equipment such as display are connected, and adjusts antenna according to the shown rating situation of display again.Under the configuration of single cable, a plurality of Rcv decoders, an antenna, lnb can be shared by each resident family of same solitary building.The antenna of this kind configuration is installed more inapplicable screen is supervised the method for adjusting antenna.Fig. 2 A shows under this kind configuration, and disc-shaped antenna is with after lnb is connected, in the viewed result of the output of lnb.Because under this kind configuration, a plurality of users are with frequency division multiplexing (Frequency Division Multiplex; FDM) mode is shared band resource, so just determine frequency acceptance band after the indication that lnb must client be received transmits.Therefore during disc-shaped antenna and lnb are installed, can't adjust the horizon elevation angle and the azimuth of antenna by Direct observation display rating situation.This situation needs installation personnel just can make lnb receive the signal of some frequency band by particular instrument to the lnb input instruction more, shown in Fig. 2 B.Therefore, if a convenient antenna horizon elevation angle and the azimuthal receiving equipment adjusted arranged, must reduce the problem of present rating family or installation personnel.
Summary of the invention
The purpose of this invention is to provide a kind of installation that makes outdoor receiving device lnb and outdoor receiving device more easily.
One embodiment of lnb of the present invention comprises a receiving element group, a frequency reducing element group, a memory storage medium and a processor.The receiving element group is in order to receive one group of satellite-signal.Memory storage medium is in order to store a plurality of preset data.Processor reads a plurality of preset data of above-mentioned memory storage medium, and in operating in Installation Modes following time, adjusts above-mentioned frequency of oscillation according to above-mentioned preset data.Frequency reducing element group is handled above-mentioned satellite-signal, and produces a plurality of frequency reducing signals according to one group of frequency of oscillation.
One embodiment of outdoor receiving device of the present invention comprises an antenna, a waveguide pipe and a lnb.Waveguide pipe is arranged at the focus of antenna, in order to collect a plurality of satellite-signals.Lnb comprises a receiving element group, a frequency reducing element group, a memory storage medium and a processor.The receiving element group is in order to receive the satellite-signal from waveguide pipe.Memory storage medium is in order to store a plurality of preset data.Processor reads a plurality of preset data of above-mentioned memory storage medium, and in operating in Installation Modes following time, adjusts above-mentioned frequency of oscillation according to above-mentioned preset data.Frequency reducing element group is a plurality of frequency reducing signals according to one group of frequency of oscillation with above-mentioned satellite-signal frequency reducing.
Description of drawings
Fig. 1 shows the broadcasting-satellite system Organization Chart;
After Fig. 2 A and Fig. 2 B show disc-shaped antenna and lnb are connected, the result of low noise amplifier output;
The configuration diagram of Fig. 3 display application lnb of the present invention; And
The present invention of Fig. 4 display application handles the method flow diagram of satellite-signal one embodiment.
And the description of reference numerals in the above-mentioned accompanying drawing is as follows:
102 terrestrial broadcasting stations, 104,108 radiofrequency signals
106 satellites, 110 disc-shaped antennas
112 waveguide pipe, 114 low noise amplifiers
116 coaxial cables, 118 Rcv decoders
120 displays, 30 lnbs
302 receiving element groups, 304 frequency reducing element devices
306 processors, 308 memory storage medium
310 multiplexers, 312 coaxial cables
The 314a-314n Rcv decoder
Embodiment
The configuration diagram of Fig. 3 display application lnb 30 of the present invention includes receiving element group 302, frequency reducing element group 304, memory storage medium 308 and processor 306 etc.Receiving element group 302 is in order to receive one group of satellite-signal, and its satellite-signal may be designated as V and H for the mutually perpendicular electromagnetic wave signal of a pair of orientation of oscillation.Frequency reducing element group 304 is handled above-mentioned satellite-signal, and produces a plurality of frequency reducing signals.The a plurality of preset data of memory storage medium 308 storages.Processor 306 reads a plurality of preset data that above-mentioned memory storage medium 308 is loaded with.When processor 306 operates in Installation Modes following time, can adjust the frequency of oscillation of above-mentioned frequency reducing element group 304 according to the data that above-mentioned memory storage medium 308 is stored, to receive the satellite-signal of above-mentioned storage data appointment.
In certain embodiments of the present invention, above-mentioned a plurality of preset data is a channel predetermined and default frequency of oscillation table of comparisons, when the frequency of oscillation of above-mentioned frequency reducing element group 304 was adjusted into above-mentioned default frequency of oscillation, above-mentioned frequency reducing signal had above-mentioned channel predetermined information.For instance, table 1 is the channel predetermined and default frequency of oscillation table of comparisons one example.When lnb operates in Installation Modes following time, frequency reducing element group will channel predetermined be No. 75, satellite frequency is positioned at the channel that is loaded with on the 11.2125-11.75GHz scope in other words, with the frequency of oscillation frequency reducing of 9.75GHz.So after lnb enters Installation Modes, processor 308 according to the content of table 1 make frequency reducing element group with 9.75GHz with channel be No. 75 in other words satellite frequency be positioned at the channel that is loaded with on the 11.2125-11.75GHz scope and be downconverted to a medium-frequency band.
Table 1
| Channel predetermined (satellite frequency) | Default frequency of oscillation |
| 75 (11.2125-11.75GHz) | 9.75GHz |
Yet the project of tentation data is not limited only to the relation table of channel predetermined and default frequency of oscillation, other can receive information that special frequency band is loaded with for lnb and all can the tentation data mode be prestored in the memory storage medium 308, and device numbering or other can be in order to limit the information such as target band of lnb frequently as polarization information, groove (frequency slot) information, satellite designation, commentaries on classics frequently.Owing to the difference on each satellite is changeed the signal that the frequency device is responsible for handling different frequency bands or different content, so if can specify the commentaries on classics frequency device numbering that receives on the particular satellite also to can be considered the signal that makes lnb reception special frequency band.In a preferred embodiment of the invention, above-mentioned lnb 30 enters above-mentioned Installation Modes after connecting a power supply.So when the installation personnel desire is installed when being connected with the antenna of lnb, after antenna and lnb equipment were connected with the mains, lnb was the signal of some frequency band of automatic reception.Installation personnel can be adjusted the horizon elevation angle and the azimuth of antenna according to the signal strength signal intensity of lnb, and the intensity of the number of winning the confidence at last has peaked antenna horizon elevation angle and azimuth.To be installed finishing, lnb 30 are after the instruction that receives from arbitrary Rcv decoder, and processor 306 is operable under the user watched pattern.In other reference data, user watched pattern is called landing pattern (fallingmode) again, means after lnb receives from the instruction of arbitrary Rcv decoder and promptly enters another operator scheme.The frequency of oscillation of frequency reducing element group is adjusted according to the user's request signal under user watched pattern.
Under single cable, multi-user's rating configuration, lnb 30 also can comprise a multiplexer 310, and above-mentioned frequency reducing element group may comprise a plurality of frequency demultipliers, in order to handle the frequency reducing signal of a plurality of frequency bands simultaneously, make a cable 312 can transmit above-mentioned signal after multiplexed to each user's receiver 314.In other embodiments of the invention, lnb 30 can enter above-mentioned Installation Modes according to user's input signal in addition, for the usefulness of adjusting antenna horizon elevation angle and azimuth.
In certain embodiments of the present invention, receiving element group 302 includes low noise amplifier (LowNoise Amplifier; LNA).Frequency reducing element group 304 includes local oscillator, mixer and filter.The frequency of oscillation of local oscillator is an adjustable parameter, so can change the frequency band that institute's desire receives according to the default frequency of oscillation that processor 306 is passed back.Filter can be eliminated the image frequency signal or the signal beyond the frequency band that institute's desire receives that produce after the smear.
In other embodiments of the invention, lnb is connected on the outdoor receiving device, that is, devices such as lnb and disc-shaped antenna, waveguide pipe couple and produce interaction.
The present invention of Fig. 4 display application handles the method flow diagram of satellite-signal one embodiment.At the beginning, receive one group of satellite-signal, as step S401.Step S402 extracts a plurality of preset data.When operating in Installation Modes following time, adjust a frequency of oscillation according to above-mentioned a plurality of preset data; When operating in user watched pattern following time, adjust above-mentioned frequency of oscillation according to a user's request signal, as step S403.According to the above-mentioned satellite-signal of above-mentioned frequency of oscillation frequency reducing to produce one group of frequency reducing signal, as step S404.In a preferred embodiment of the invention, preset data can be one channel predetermined, the groove information and the default frequency of oscillation table of comparisons frequently.When above-mentioned frequency of oscillation was adjusted into above-mentioned default frequency of oscillation, above-mentioned frequency reducing signal had above-mentioned channel predetermined information.Preset data may be a polarization information, and the receiving satellite signal among the step S401 is for comprising according to polarization message pick-up satellite-signal.In other embodiments of the invention, preset data can comprise that one changes frequently the device numbering and presets the frequency of oscillation table of comparisons, and when above-mentioned frequency of oscillation was adjusted into above-mentioned default frequency of oscillation, above-mentioned frequency reducing signal had the corresponding above-mentioned commentaries on classics commentaries on classics back information frequently of device numbering frequently.
Technology contents of the present invention and technical characterstic openly as above, yet those skilled in the art still may be based on teaching of the present invention and open and do all replacement and modifications that does not deviate from spirit of the present invention.Therefore, protection scope of the present invention should be not limited to the disclosed scope of embodiment, and should comprise various do not deviate from replacement of the present invention and modifications, and is contained by following claim.
Claims (17)
1. a lnb is applicable to a Satellite Communication System, comprises:
One receiving element group is in order to receive one group of satellite-signal;
One frequency reducing element group in order to handling above-mentioned satellite-signal, and produces a plurality of frequency reducing signals according to one group of frequency of oscillation;
One memory storage medium is in order to store a plurality of preset data; And
One processor reads a plurality of preset data of above-mentioned memory storage medium, and in operating in Installation Modes following time, adjusts above-mentioned frequency of oscillation according to above-mentioned preset data.
2. according to the lnb of claim 1, wherein above-mentioned a plurality of preset data comprise a channel predetermined and default frequency of oscillation table of comparisons, when the frequency of oscillation of above-mentioned frequency reducing element group was adjusted into above-mentioned default frequency of oscillation, above-mentioned frequency reducing signal had above-mentioned channel predetermined information.
3. according to the lnb of claim 2, wherein above-mentioned a plurality of preset data comprise a polarization information, and above-mentioned receiving element group is according to the above-mentioned satellite-signal of above-mentioned polarization message pick-up.
4. according to the lnb of claim 2, the wherein above-mentioned table of comparisons also comprises a frequency groove information, and above-mentioned frequency reducing element group is according to the above-mentioned satellite-signal of above-mentioned frequency groove information processing.
5. according to the lnb of claim 1, wherein above-mentioned a plurality of preset data comprise that one changes frequency device numbering and presets the frequency of oscillation table of comparisons, when the frequency of oscillation of above-mentioned frequency reducing element group was adjusted into above-mentioned default frequency of oscillation, above-mentioned frequency reducing signal had the corresponding above-mentioned commentaries on classics commentaries on classics back information frequently of device numbering frequently.
6. according to the lnb of claim 1, wherein above-mentioned processor is when operating in user watched pattern following time, and above-mentioned processor is adjusted the frequency of oscillation of above-mentioned frequency reducing element group according to a user's request signal.
7. according to the lnb of claim 6, it also comprises a multiplexer, in order to multiplexed above-mentioned frequency reducing signal, makes a cable transmit above-mentioned signal after multiplexed to a plurality of users' receiver.
8. according to the lnb of claim 1, wherein above-mentioned Installation Modes is after above-mentioned lnb connects a power supply and enter.
9. according to the lnb of claim 1, wherein above-mentioned Installation Modes enters according to user's input signal.
10. according to the lnb of claim 1, wherein above-mentioned user watched pattern receives from an instruction back of a Rcv decoder and enters in above-mentioned lnb.
11. an outdoor receiving device comprises:
One antenna;
One waveguide pipe is positioned at the focus of antenna, in order to collect a plurality of satellite-signals;
One low noise amplifier comprises:
One receiving element group is in order to receive the above-mentioned satellite-signal from above-mentioned waveguide pipe;
One frequency reducing element group in order to handling above-mentioned satellite-signal, and produces a plurality of frequency reducing signals according to one group of frequency of oscillation;
One memory storage medium is in order to store a plurality of preset data; And
One processor reads a plurality of preset data of above-mentioned memory storage medium, and in operating in Installation Modes following time, adjusts above-mentioned frequency of oscillation according to above-mentioned preset data.
12. outdoor receiving device according to claim 11, wherein above-mentioned a plurality of preset data comprise a channel predetermined and default frequency of oscillation table of comparisons, when the frequency of oscillation of above-mentioned frequency reducing element group was adjusted into above-mentioned default frequency of oscillation, above-mentioned frequency reducing signal had above-mentioned channel predetermined information.
13. outdoor receiving device according to claim 11, wherein above-mentioned a plurality of preset data comprise that one changes frequency device numbering and presets the frequency of oscillation table of comparisons, when the frequency of oscillation of above-mentioned frequency reducing element group was adjusted into above-mentioned default frequency of oscillation, above-mentioned frequency reducing signal had the corresponding above-mentioned commentaries on classics commentaries on classics back information frequently of device numbering frequently.
14. according to the outdoor receiving device of claim 11, wherein above-mentioned processor is when operating in user watched pattern following time, above-mentioned processor is adjusted the frequency of oscillation of above-mentioned frequency reducing element group according to the user's request signal.
15. according to the outdoor receiving device of claim 11, wherein above-mentioned lnb enters above-mentioned Installation Modes after connecting a power supply.
16. according to the outdoor receiving device of claim 11, wherein above-mentioned Installation Modes enters according to user's input signal.
17. according to the outdoor receiving device of claim 11, wherein above-mentioned user watched pattern receives arbitrary instruction afterwards and enter in above-mentioned lnb.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100889602A CN101557507B (en) | 2008-04-09 | 2008-04-09 | Low-noise frequency demultiplier and outdoor receiving device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100889602A CN101557507B (en) | 2008-04-09 | 2008-04-09 | Low-noise frequency demultiplier and outdoor receiving device |
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| Publication Number | Publication Date |
|---|---|
| CN101557507A true CN101557507A (en) | 2009-10-14 |
| CN101557507B CN101557507B (en) | 2012-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100889602A Expired - Fee Related CN101557507B (en) | 2008-04-09 | 2008-04-09 | Low-noise frequency demultiplier and outdoor receiving device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102468882A (en) * | 2010-11-12 | 2012-05-23 | 启碁科技股份有限公司 | Optical fiber low-noise frequency reducer capable of being quickly aligned |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100413410B1 (en) * | 1996-12-16 | 2004-02-14 | 엘지전자 주식회사 | Method for automatically setting local oscillation frequency of low-noise block of satellite broadcast receiver |
| JPH1132327A (en) * | 1997-07-11 | 1999-02-02 | Victor Co Of Japan Ltd | Digital broadcast receiver |
| GB0030965D0 (en) * | 2000-12-19 | 2001-01-31 | Nokia Oy Ab | Improvements relating to satellite reception` |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102468882A (en) * | 2010-11-12 | 2012-05-23 | 启碁科技股份有限公司 | Optical fiber low-noise frequency reducer capable of being quickly aligned |
| CN102468882B (en) * | 2010-11-12 | 2014-09-10 | 启碁科技股份有限公司 | Optical fiber low-noise frequency reducer capable of being quickly aligned |
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| CN101557507B (en) | 2012-02-08 |
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Granted publication date: 20120208 Termination date: 20190409 |