CN205754362U - A kind of intelligent broadcast based on cable television transmission system - Google Patents
A kind of intelligent broadcast based on cable television transmission system Download PDFInfo
- Publication number
- CN205754362U CN205754362U CN201620385605.1U CN201620385605U CN205754362U CN 205754362 U CN205754362 U CN 205754362U CN 201620385605 U CN201620385605 U CN 201620385605U CN 205754362 U CN205754362 U CN 205754362U
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- CN
- China
- Prior art keywords
- optical signal
- cable television
- intelligent
- transmission system
- signal
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
This utility model is that a kind of intelligent broadcast based on cable television transmits system, and including intelligent controller, intelligent controller is successively with frequency interleaved modulation modulator, directly adjust transmitter；Straight tune transmitter and higher level's optical signal coordinate with wave multiplexer respectively, and the wave multiplexer other end is connected with terminal receiver by cable tv network system module.The wavelength of optical signal sent here by wavelength and the higher level of the straight optical signal adjusting transmitter output by high-frequency fm signal being transformed into optical signal closely but reduces mutual interference again, so follow-up bait amplifier of mixing can be made normally to be amplified by optical signal, and two will not be broadcast singal and TV signal interferes with each other.
Description
Technical field
This utility model relates to a kind of intelligent broadcast system technical field, especially relates to a kind of intelligent broadcast based on cable television transmission system.
Background technology
In recent years, along with the process iterative method of cable TV digitalization, originally in analog network, the intelligent broadcast system of transmission is also faced with update.Owing to initial cable TV HFC system uses the optical sender transmission signal of 1310nm wavelength, node city broadcast singal at network is the most easily and conveniently, after digital improvement, in particular with 1550nm optical sender, the extensive application of mixing bait amplifier, the cable TV network being develops towards the direction of all optical network, and Fiber To The Curb, FTTB even fiber to the home.In this case, traditional RF broadcast inserted mode just cannot employ, and realize at different node city broadcast singals, and the mode being necessary for using light to insert solves, and there is presently no relevant solution and occurs.
Utility model content
For overcoming above-mentioned technical problem, the technical solution adopted in the utility model is as follows:
A kind of intelligent broadcast based on cable television transmission system, including intelligent controller, intelligent controller is successively with frequency interleaved modulation modulator, directly adjust transmitter；Straight tune transmitter and higher level's optical signal coordinate with wave multiplexer respectively, and the wave multiplexer other end is connected with terminal receiver by cable tv network system module.
Described intelligent controller can accept audio signal, call voice, audio signal.
Described higher level's optical signal is received by wave multiplexer.
Frequency interleaved modulation modulator frequency modulating signal is 88-108MHZ.
Described wave multiplexer receives the straight optical signal adjusting transmitter to launch and higher level's optical signal module.
The various audio signals inserted will be needed via intelligent controller, it is transferred to frequency interleaved modulation modulator, by frequency interleaved modulation modulator by the carrier channel of modulates audio signals to regulation, again the high-frequency fm signal obtained is transferred to directly adjust transmitter, straight tune in transmitter, radiofrequency signal is converted to optical signal, then in the terminal intelligent FM receiver that is transferred on cable TV network after wave multiplexer mixes of the optical signal sent here with higher level.
Utility model provides the benefit that: the wavelength of optical signal sent here by wavelength and the higher level of the straight optical signal adjusting transmitter output by high-frequency fm signal being transformed into optical signal closely but reduces mutual interference again, so follow-up bait amplifier of mixing can be made normally to be amplified by optical signal, and two will not be broadcast singal and TV signal interferes with each other.
So, it is desirable to suitable wavelength will be selected for carrying broadcast singal, adjust suitable output and avoid interfering.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
As Fig. 1 shows, a kind of intelligent broadcast based on cable television transmission system, including intelligent controller 1, intelligent controller 1 successively with frequency interleaved modulation modulator 2, straight adjust transmitter 3；Straight tune transmitter 3 and higher level's optical signal 7 coordinate with wave multiplexer 4 respectively, and the wave multiplexer other end is connected with terminal receiver by cable tv network system module 5.
Described intelligent controller 1 can accept audio signal, call voice, audio signal.
Described higher level's optical signal 7 is received by wave multiplexer.
Frequency interleaved modulation modulator 2 frequency modulating signal is 88-108MHZ.
Described wave multiplexer 4 receives the straight optical signal adjusting transmitter 3 to launch and higher level's optical signal module 7.
Principle:
From local computing sound card, the audio signals such as call voice and microphone input, by in docking device transmission to intelligent controller 1, intelligent controller is converted into treated composite audio signal them, these audio signals are transferred to modem 2 again, 88-108MHZ high-frequency signal is modulated by frequency interleaved modulation modulator, again the high-frequency fm signal obtained is transferred to directly adjust transmitter 3, in straight tune transmitter, radiofrequency signal is converted to the optical signal of 1550nm, in the terminal intelligent FM receiver that the optical signal that local optical signal is sent here with higher level again is transferred on cable TV network after wave multiplexer mixes.
Claims (5)
1. intelligent broadcast based on a cable television transmission system, including intelligent controller (1), intelligent controller (1) is successively with frequency interleaved modulation modulator (2), directly adjust transmitter (3)；Directly adjusting transmitter (3) and higher level's optical signal (7) to coordinate with wave multiplexer (4) respectively, the wave multiplexer other end is connected with terminal receiver by cable tv network system module (5).
A kind of intelligent broadcast based on cable television the most according to claim 1 transmission system, it is characterised in that: described intelligent controller (1) can accept audio signal, call voice, audio signal.
A kind of intelligent broadcast based on cable television the most according to claim 1 transmission system, it is characterised in that: it is characterized in that: described higher level's optical signal (7) is received by wave multiplexer.
A kind of intelligent broadcast based on cable television the most according to claim 1 transmission system, it is characterised in that: frequency interleaved modulation modulator (2) frequency modulating signal is 88-108MHZ.
A kind of intelligent broadcast based on cable television the most according to claim 1 transmission system, it is characterised in that: described wave multiplexer (4) receives the optical signal and higher level's optical signal module (7) directly adjusting transmitter (3) to launch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620385605.1U CN205754362U (en) | 2016-05-03 | 2016-05-03 | A kind of intelligent broadcast based on cable television transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620385605.1U CN205754362U (en) | 2016-05-03 | 2016-05-03 | A kind of intelligent broadcast based on cable television transmission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205754362U true CN205754362U (en) | 2016-11-30 |
Family
ID=57372554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620385605.1U Expired - Fee Related CN205754362U (en) | 2016-05-03 | 2016-05-03 | A kind of intelligent broadcast based on cable television transmission system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205754362U (en) |
-
2016
- 2016-05-03 CN CN201620385605.1U patent/CN205754362U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161130 Termination date: 20170503 |