CN2673006Y - Broad band cut-in device for wired TV coaxial cable net - Google Patents
Broad band cut-in device for wired TV coaxial cable net Download PDFInfo
- Publication number
- CN2673006Y CN2673006Y CN 200420024187 CN200420024187U CN2673006Y CN 2673006 Y CN2673006 Y CN 2673006Y CN 200420024187 CN200420024187 CN 200420024187 CN 200420024187 U CN200420024187 U CN 200420024187U CN 2673006 Y CN2673006 Y CN 2673006Y
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- cable
- data
- coaxial
- access device
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Abstract
The utility model discloses a broad band cut-in device for a wired TV coaxial cable net, comprising a coaxial mixing cut-in apparatus used for completing the mixing cut-in between data information among the starting ends of the coaxial cables and the radio frequency signal co-cables of the wired TV and the data high-speed connection between data information among the starting ends of the coaxial cables and the data of the fiber nodes. The mixing cut-in and the data high-speed connection completed by the coaxial mixing cut-in apparatus are below the fiber net of the cable TV. The utility model also comprises a coaxial data crossing apparatus used for supporting the lossless transmission of the cable TV signals in the coaxial cables and the lossless separation between the data and the TV signals, and a user terminal used for the connection between the cable TV net and users' TV sets, computers, communication equipments, etc. The adoption of the utility model can make all kinds of data information with different standards conduct high-speed bidirectional transmission with the radio frequency signals of the cable TV through the coaxial cables, and back transmission noises are eliminated.
Description
Technical field
The utility model relates to a kind of cable tv coax net broadband access device.
Background technology
The cable TV coaxial net is connected with wideband data in the prior art, generally adopts the wire cable modem technology of CABLE MODEM and SCDMA.Wherein, CABLE MODEM is modulated into RF stream with database stream, frequency division/time-division, and up employing QPSK/QAM modulation, speed 1-10M, the characteristics of this network are that part is utilized existing HFC net.And the SCDMA network technology also is that database stream is modulated into RF stream, carries out S-CDMA then; This network characteristics is to make full use of existing HFC net.The shortcoming of above-mentioned two kinds of network skills is shared channels, has noise to compile, and needs to increase light passback/accepting device, coaxial cable is required high.
Summary of the invention
The utility model provides a kind of cable tv coax net broadband access device, it is by existing cable TV HFC network, realize the access of cable TV wideband data, and data-signal can select voluntarily optimal frequency range to transmit, eliminate the passback noise.
The utility model is achieved through the following technical solutions: a kind of cable tv coax net broadband access device, it comprises: coaxial mixing access device, be used to finish below the cable TV optical networking, the data message between coaxial cable top and cable TV the radiofrequency signal mixing of cable altogether insert and are connected with data high-speed between Fiber Node; Cross over device with axis data, be used for supporting that cable TV signal separates with the harmless of TV signal in the harmless transmission and the data of coaxial cable; User terminal is used for user's television set, computer, communication apparatus etc. and being connected of cable TV network.
Described coaxial mixing access device has light/electrical interface circuit and coaxial cable is imported, output port; Described have coaxial cable input, output port with axis data leap utensil; Described user terminal has separator, tv signal input mouth, output port and RJ-45, USB interface; Described coaxial mixing access device, cross over device and user terminal utilizes FREQUENCY CONTROL technology and conflict treatment technology with axis data, according to the performance of catv line device, select the frequency range of finishing data up-downgoing modulation and transmitting for use in the transmission band the 110MHz-750MHz that uses except that television transmission; Described coaxial mixing access device, the data-signal of crossing over device and user terminal with axis data will transmit to select only frequency range voluntarily.
The utility model adopts coaxial mixing access device, crosses over device and user terminal with axis data, the wideband data of realizing cable television network inserts, utilize the means of FREQUENCY CONTROL technology and conflict treatment technology, carry out up, the downlink transfer of data message in other frequency range transmit special-purpose frequency range except that TV signal, promptly make coaxial cable in this specific frequency range, realize transmitted in both directions.Above-mentioned device has also utilized frequency hopping, spread spectrum simultaneously, therefore on the frequency range of transmitted in both directions, can freely select optimal frequency range, the realization network bi-directional is transformed, discharged the line bandwidth restriction that the bandwidth because of amplifier causes, digital signal there is the effect of interruption, and has eliminated the passback noise that amplifier brings.
Description of drawings
Fig. 1 is the simple and clear principle schematic of coaxial mixing access device of the present utility model
Fig. 2 is a simple and clear principle schematic of crossing over device with axis data of the present utility model
Fig. 3 is the simple and clear principle schematic of user terminal of the present utility model
Embodiment
With reference to accompanying drawing, the utility model cable tv coax net broadband access device, it is below the cable TV optical networking, coaxial mixing access device is set between coaxial cable top and data message incoming end and the user, crosses over device and user terminal with axis data.Coaxial mixing access device has light/electrical interface, coaxial cable input, output port, be provided with data-signal transceiver module, data protocol processing module, digital signal processing module, TV signal processing module and mixed signal output module, finish with the optical node data network and be connected, synthetic the reaching that has solved TV signal and network digital signal separated, and guaranteed the data transfer bandwidth on the coaxial cable.Cross over utensil with axis data coaxial cable input, output port are arranged, digital signal input, output port, in be provided with digital signal and strengthen module, data protocol processing module and TV signal separation module, support the harmless transmission of cable TV signal, cooperate aforementioned coaxial mixing access device to solve separating of TV signal and network digital signal and synthetic, for the high-speed transfer that realizes data message on the coaxial cable has played guarantee effect.User terminal has TV signal input, TV signal delivery outlet and RJ-45, USB interface, terminal inner is provided with separator, modulator-demodulator, data outputting module and signaling processing module, finish communication class equipment such as the television set that connects the user and computer, voice, cross over the broadband network of finishing the user under the support of device at coaxial mixing access device, with axis data and connect.Coaxial cable data information transfer bandwidth is 10M, 100M, and 200M, 1000M, user terminal data transmission bandwidth are 10M.
Claims (6)
1, a kind of cable tv coax net broadband access device, it is characterized in that it comprises: coaxial mixing access device, be used to finish below the cable TV optical networking, the data message between coaxial cable top and cable TV the radiofrequency signal mixing of cable altogether insert and are connected with data high-speed between Fiber Node; Cross over device with axis data, be used for supporting that cable TV signal separates with the harmless of TV signal in the harmless transmission and the data of coaxial cable; User terminal is used for user's television set, computer, communication apparatus etc. and being connected of cable TV network.
2, cable tv coax net broadband access device according to claim 1 is characterized in that described coaxial mixing access device has light/electrical interface circuit and coaxial cable is imported, output port.
3, cable tv coax net broadband access device according to claim 1 is characterized in that describedly crossing over utensil with axis data coaxial cable input, output port being arranged.
4, cable tv coax net broadband access device according to claim 1 is characterized in that described user terminal has separator, tv signal input mouth, output port and RJ-45, USB interface.
5, cable tv coax net broadband access device according to claim 1, it is characterized in that described coaxial mixing access device, utilize FREQUENCY CONTROL technology and conflict treatment technology with axis data leap device and user terminal, according to the performance of catv line device, select the frequency range of finishing data up-downgoing modulation and transmitting for use in the transmission band the 110MHz-750MHz that uses except that television transmission.
6, cable tv coax net broadband access device according to claim 5 is characterized in that described coaxial mixing access device, the data-signal of crossing over device and user terminal with axis data will transmit to select only frequency range voluntarily.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420024187 CN2673006Y (en) | 2004-01-12 | 2004-01-12 | Broad band cut-in device for wired TV coaxial cable net |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420024187 CN2673006Y (en) | 2004-01-12 | 2004-01-12 | Broad band cut-in device for wired TV coaxial cable net |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2673006Y true CN2673006Y (en) | 2005-01-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420024187 Expired - Fee Related CN2673006Y (en) | 2004-01-12 | 2004-01-12 | Broad band cut-in device for wired TV coaxial cable net |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2673006Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100364330C (en) * | 2005-06-06 | 2008-01-23 | 张学斌 | Method for implementing household wireless wide band signal accessing by using coaxial cable |
| CN101237255B (en) * | 2007-01-30 | 2011-05-04 | 仲琦科技股份有限公司 | Method for reducing the uplink intrusion noise of cable data system |
| CN101601289B (en) * | 2006-09-12 | 2012-11-28 | 汤姆逊许可公司 | Bidirectional signal transmission apparatus and method |
| CN104885449A (en) * | 2012-11-12 | 2015-09-02 | 加速有限公司 | Virtual converged cable access platforms for HFC cable networks |
-
2004
- 2004-01-12 CN CN 200420024187 patent/CN2673006Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100364330C (en) * | 2005-06-06 | 2008-01-23 | 张学斌 | Method for implementing household wireless wide band signal accessing by using coaxial cable |
| CN101601289B (en) * | 2006-09-12 | 2012-11-28 | 汤姆逊许可公司 | Bidirectional signal transmission apparatus and method |
| CN101237255B (en) * | 2007-01-30 | 2011-05-04 | 仲琦科技股份有限公司 | Method for reducing the uplink intrusion noise of cable data system |
| CN104885449A (en) * | 2012-11-12 | 2015-09-02 | 加速有限公司 | Virtual converged cable access platforms for HFC cable networks |
| CN104885449B (en) * | 2012-11-12 | 2018-11-09 | 加速有限公司 | Virtual fusion access in radio platform for HFC cable networks |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |