CN201042055Y - Radio differential rotation system for satellite TV middle frequency signal - Google Patents
Radio differential rotation system for satellite TV middle frequency signal Download PDFInfo
- Publication number
- CN201042055Y CN201042055Y CNU2007200198658U CN200720019865U CN201042055Y CN 201042055 Y CN201042055 Y CN 201042055Y CN U2007200198658 U CNU2007200198658 U CN U2007200198658U CN 200720019865 U CN200720019865 U CN 200720019865U CN 201042055 Y CN201042055 Y CN 201042055Y
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- signal
- satellite
- uhf
- top box
- transmitter
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Abstract
The utility model relates to an intermediate frequency wireless differential system for a satellite TV, which comprises a satellite receiving antenna and a high frequency tuner. The output end of the high frequency tuner is connected with the signal input end of a UHF transmitter. The signal output end of the UHF transmitter is connected with the signal input end of a UHF non-directional transmitter through a coaxial cable. A UHF receiving antenna is connected with a set-top box through a coaxial wire. The A/V signal output end of the set-top box is connected with the AV input end of a corresponding simulated TV set. The high frequency tuner receives a digital TV signal from the satellite, and amplifies the digital TV signal into the satellite intermediate frequency TV signal through frequency conversion, and then the satellite intermediate frequency TV signal is sent by the UHF non-directional transmitting antenna which is connected with the UHF transmitter. The receiving antenna receives the satellite TV signal within the effective coverage area of the electric wave, and then transmits the satellite TV signal to the set-top box which is connected with the receiving antenna. The signal is switched into a simulated audio and a video signal after being decoded and demodulated and then is transmitted to a common simulated TV set, thereby achieving the proposal of watching TV program by a plurality of users in remote areas, and greatly decreasing the operation cost of reaching all villages for watching digital TV program.
Description
Technical field
The utility model relates to the frequency reducing of satellite television intermediate-freuqncy signal and transmits and receives system, is applicable to that particularly rural area, remote mountain areas in " project of "Communication with Every Village" " watches that the wireless difference of satellite television intermediate-freuqncy signal of satellite television programming transfers from one department to another system.
Background technology
Implemented " project of "Communication with Every Village" " scheme and be based on the cable TV design for solving a difficult problem that the Chinese remote mountain areas rural area people can't TV reception in the past, promptly each program of satellite television (simulated television and Digital Television) is demodulated to respectively to simulate and is modulated to the simulating on the channel of TV behind the Voice ﹠ Video again, these simulate channel with synthetic one tunnel output of blender, add distributor with coaxial cable after amplifying TV signal is assigned to each household.Owing to being that the reason that simulates the transmission of television system and cable distribution network makes that the picture quality of the TV programme that the user watches is bad, and along with the corresponding cost exponentially of the increase of handling the program tricks rises, so generally only relay the TV programme about 8 covers, can select the TV programme of watching few and be difficult to guarantee the program normal open because cable television system itself be not for underpopulated remote countryside designed.Thereby the digital television program that allows the rural area, remote mountain areas watch that tricks is many, picture quality is good is " project of "Communication with Every Village" " problem demanding prompt solution.
The utility model content
Be intended to watch that satellite television programming provides a kind of cost performance height, installation is simple and safeguard that being easy to the wireless difference of satellite television intermediate-freuqncy signal transfers from one department to another system for addressing the above problem the utility model for the rural area, remote mountain areas.
The technical scheme in the invention for solving the above technical problem is: the wireless difference of satellite television intermediate-freuqncy signal is transfered from one department to another system, contain satellite earth antenna and tuner, it is characterized in that: the tuner signal output part is connected with UHF transmitter signal input, and the signal output part of UHF transmitter is connected through the signal input part of coaxial cable with the UHF omnidirectional transmitter antenna; The UHF reception antenna is connected with set-top box through coaxial line, and the A/V signal output part of set-top box links to each other with corresponding simulating television set AV input.
The UHF transmitter down-converts to satellite television intermediate-freuqncy signal frequency 950MHz-1450MHz 360MHz-860MHz and is amplified to 40dBm, and the satellite television intermediate-freuqncy signal after again frequency conversion being amplified is launched through the UHF omnidirectional transmitter antenna; The satellite digital TV signal that the difference forwarding that set-top box will receive is penetrated carries out the OPSK standard and separates mediation by MPEG/2 or the decoding of AVS standard, and the signal behind the demodulating and decoding is transferred to the A/V interface of simulated television.
The beneficial effects of the utility model are: be installed on the digital television signal frequency conversion that the tuner on the satellite earth antenna will receive from satellites transmits and be enlarged into the satellite medium-frequency TV signal, launch via the UHF omnidirectional transmitter antenna that the UHF transmitter is connected, in omnidirectional transmitter antenna emission electric wave effective coverage range, reception antenna will receive satellite TV signal and transfer to the set-top box that is attached thereto knot, set-top box is transformed into after with satellite TV signal decoding and demodulation and simulates the Voice ﹠ Video signal and be sent to be attached thereto knot common and simulate television set, the need of digital television program are watched at realization many families, one village, rural area, remote mountain areas, reduce the operation cost that " project of "Communication with Every Village" " watches Digital Television greatly.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the utility model repeater system working state schematic representation;
Among the figure: 1. satellite earth antenna; 2. tuner; 3.UHF transmitter; 4.UHF omnidirectional transmitter antenna; 5.UHF reception antenna; 6. set-top box; 7. simulated television; 8. communication satellite.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
The wireless difference of satellite television intermediate-freuqncy signal is as depicted in figs. 1 and 2 transfered from one department to another system, tuner 2 signal output parts that are installed on the satellite earth antenna 1 are connected with UHF transmitter 3 signal input parts, the signal output part of UHF transmitter 3 is connected through the signal input part of coaxial cable with UHF omnidirectional transmitter antenna 4, this part is the utility model system signal difference rotary device, is installed on the rural area, remote mountain areas; UHF reception antenna 5 is connected with set-top box 6 through coaxial line, and the A/V signal output part of set-top box 6 links to each other with corresponding simulating television set 7AV input, and this part is the utility model system signal receiving system, is installed on each family, rural area, remote mountain areas.
Its operation principle is: satellite earth antenna 1 is used for the TV programme signal of received communication satellite 8 emission and is transferred to the tuner 2 that is installed on satellite earth antenna 1 focus, this tuner 2 signal is amplified and frequency conversion after export the satellite medium-frequency TV signal of 950MHz-1450MHz to the UHF transmitter 3 that is attached thereto.The satellite medium-frequency TV signal 950MHz-1450MHz that this UHF transmitter 3 is sent tuner 2 here down-converts to uhf band 360MHZ-860MHZ, after being amplified to 40dBm, be transferred to it the UHF omnidirectional transmitter antenna 4 that links, by UHF omnidirectional transmitter antenna 4 to around the space radiation radio wave.UHF omnidirectional transmitter antenna 4 electric waves effective coverage range in, UHF reception antenna 5 will receive by the satellite TV signal of UHF omnidirectional transmitter antenna 4 emissions and be transferred to the set-top box 6 that is attached thereto knot, set-top box 6 is transformed into after with satellite TV signal (being digital television signal) decoding and demodulation and simulates the Voice ﹠ Video signal and give be attached thereto knot common and simulate television set 7, can watch the program of Digital Television, allow the rural area, remote mountain areas of " project of "Communication with Every Village" " reach many families, a village and simulate the purpose that television set 7 is watched satellite digital TV, reduce the operation cost that Digital Television is watched in " project of "Communication with Every Village" " rural area, remote mountain areas greatly with common.
Claims (3)
1. the wireless difference of satellite television intermediate-freuqncy signal is transfered from one department to another system, contain satellite earth antenna and tuner, it is characterized in that: the tuner signal output part is connected with UHF transmitter signal input, and the signal output part of UHF transmitter is connected through the signal input part of coaxial cable with the UHF omnidirectional transmitter antenna; The UHF reception antenna is connected with set-top box through coaxial line, and the A/V signal output part of set-top box links to each other with corresponding simulating television set AV input.
2. the wireless difference of satellite television intermediate-freuqncy signal according to claim 1 is transfered from one department to another system, and it is characterized in that: described UHF transmitter down-converts to satellite television intermediate-freuqncy signal frequency 950MHz-1450MHz 360MHz-860MHz and is amplified to 40dBm.
3. the wireless difference of satellite television intermediate-freuqncy signal according to claim 1 is transfered from one department to another system, it is characterized in that: the satellite digital TV signal that the difference forwarding that described set-top box will receive is penetrated carries out the OPSK standard and separates mediation by MPEG/2 or the decoding of AVS standard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200198658U CN201042055Y (en) | 2007-03-23 | 2007-03-23 | Radio differential rotation system for satellite TV middle frequency signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200198658U CN201042055Y (en) | 2007-03-23 | 2007-03-23 | Radio differential rotation system for satellite TV middle frequency signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201042055Y true CN201042055Y (en) | 2008-03-26 |
Family
ID=39253767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200198658U Expired - Fee Related CN201042055Y (en) | 2007-03-23 | 2007-03-23 | Radio differential rotation system for satellite TV middle frequency signal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201042055Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101984656A (en) * | 2010-11-25 | 2011-03-09 | 合肥润东通讯科技有限公司 | Wireless satellite television transceiver |
| CN102843553A (en) * | 2012-07-03 | 2012-12-26 | 深圳光启创新技术有限公司 | Satellite television receiving system |
| CN109600561A (en) * | 2018-12-10 | 2019-04-09 | 深圳市通久电子有限公司 | A kind of integrated control system based on simulated television platform |
-
2007
- 2007-03-23 CN CNU2007200198658U patent/CN201042055Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101984656A (en) * | 2010-11-25 | 2011-03-09 | 合肥润东通讯科技有限公司 | Wireless satellite television transceiver |
| CN102843553A (en) * | 2012-07-03 | 2012-12-26 | 深圳光启创新技术有限公司 | Satellite television receiving system |
| CN102843553B (en) * | 2012-07-03 | 2016-05-04 | 深圳光启高等理工研究院 | A kind of satellite television receiving system |
| CN109600561A (en) * | 2018-12-10 | 2019-04-09 | 深圳市通久电子有限公司 | A kind of integrated control system based on simulated television platform |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080326 Termination date: 20100323 |