CN201657220U - Mixed separator used for cable television Ethernet coaxial cable transmission network reformation - Google Patents

Abstract

The utility model relates to a mixed separator used for cable television Ethernet coaxial cable transmission network reformation, which belongs to the technical field of cable television. The mixed separator comprises wiring terminals RF/IN1, RF/IN2, DATA/IN1, DATA/IN2, S/OUT1 and S/OUT2, inductors L1 to L6, capacitors C1 to C6 and 1C1 to 1C2, combining filters FLT1 and FLT2 and over current distributors CP1 to CP6. Cable television simulation or digital signals and Ethernet data signals are mixed and then output through the combining filters according to the network two-way design requirements of the mixed optical fiber coaxial cable network. The utility model has the advantages that the provided bandwidth is high, a one-way optical receiving machine does not need to be upgraded and reformed, and the cable television two-way transmission can be realized.

Description

Be used for the mixer/separator that cable TV ethernet coaxial cable transmission network is transformed

Technical field

The utility model relates to a kind of cable TV EOC (Ethernet Over Coax that is used for, the ethernet coaxial cable transmission) mixer/separator of the network rebuilding, belong to the cable TV technical field, especially the transformation of hybrid fiber coax bilateral network is a kind of based on cable TV transmitted in both directions equipment.

Background technology

Cable TV (CATV, Cable Television) has arrived the critical stage of development at present through the development of decades, and along with the development of business, digitlization, fiberize and transmitted in both directions technology etc. progressively incorporate in the cable television network.For better development, increase new service function, pursue new growth engines, thereby more and more higher to the requirement of transmission network, the transformation of network is extremely urgent.In this case, hybrid fiber coax (HFC, Hybrid FiberCoax) as a kind of broadband access network, more and more demonstrates its distinctive advantage: extremely wide transmission band, abundant frequency resource, insert means and relatively low technical cost easily.Therefore, develop the integral telecommunication business by cable TV, promptly cable TV network is except transmitting TV programme, and also possessing functions such as online, data transmission, video request program, household's IT application is the development trend of cable TV network.

Hfc plant bidirectional rebuilding both at home and abroad is in the past mainly based on North America cable TV modulator-demodulator product standard (DOCSIS), be that cable modem terminal system (CMTS is set on the basis of hfc plant system configuration, Cable ModemTermination System), upconverter, Operation ﹠ Maintenance System server (Oss Server) and equipment such as cable modem (CM, Cable Modem) bi-directional light work station and two-way amplifier are implemented in transmission CATV signal and data communication service in the hfc plant.But this technology is except that the higher share of the more sparse North America DOCSIS standard access way occupation ratio of population distribution, in the Asia and other people are mouthful than the area of comparatively dense, the number of users of DOCSIS standard relatively seldom, this enforcement in several years of domestic radio and TV operator is indicating that also the DOCSIS standard is difficult to become the bidirectional rebuilding technology of main flow in China.Wherein:

CMTS: the data that are hfc plant insert local side apparatus, are the connection devices that data are transmitted in hfc plant, are mainly used in and finish forwarding of data in the data communication network, protocol processes and rf modulations demodulation function.

Upconverter: being arranged in CMTS, is the frequency conversion device of hfc plant, and the descending analog intermediate frequency signal that is mainly used in CMTS output is converted on arbitrary television channel of CATV.

Bi-directional light work station: be the hfc plant optical node device, finish mainly that the cable TV downlink optical signal is converted to the signal of telecommunication after amplification module amplifies the output signal of telecommunication to cable system, the cable TV uplink electrical signals is converted to light signal by reverse passback light emission module and passes through Optical Fiber Transmission and return headend room after amplification module amplifies.

Two-way amplifier: be hfc plant cable system intermediate equipment, mainly finish the uplink and downlink signal and amplify the back output signal with amplification module;

Oss Server: be whole system and Network Management equipment, be used to provide system's operation required various service supports, as DHCP, TFTP, TOD, LOG service function etc. are provided for system;

CM: be connected with user terminal with hfc plant, be mainly used in data forwarding, protocol processes and the modulation function etc. finished between hfc plant and the user terminal.

But the CMTS technology can only be carried out data communication service in the hfc plant system, can not realize common telephone service etc., exists not enough on multi-service realizes.Simultaneously, use the CMTS technology in the hfc plant system, to carry out data communication service, except that exist noise collection effect, bandwidth low, do not meet the IPization trend, be not easy to some technical problem such as upgrade expanding, mainly also need optical receiver and amplifier are carried out bidirectional rebuilding (increasing back emitted module, reverse amplification module), also need add equipment such as backlight receiver and upconverter.

Summary of the invention

The purpose of this utility model is that a kind of mixer/separator that cable TV ethernet coaxial cable transmission network is transformed that is used for will be provided, the bandwidth height that it provides, unidirectional optical receiver on the circuit need not upgrading, directly use mixer/separator to make the online smooth upgrade of unidirectional optical receiver on the circuit be the bi-directional light receiver, realize the cable TV transmitted in both directions, simultaneously can make full use of the coaxial cable on the existing network, unidirectional optical receiver resource, the construction of need not registering one's residence, construction volume significantly reduces, and transformation speed is fast.

The purpose of this utility model reaches like this, a kind of mixer/separator that is used for the transformation of cable TV ethernet coaxial cable transmission network, comprise Wiring port RF/IN1, RF/IN2, DATA/IN1, DATA/IN2, S/OUT1, S/OUT2, inductance L 1, L2, L3, L4, L5, L6, capacitor C 1, C2, C3, C4, C5, C6,1C1,1C2,1C3,1C4,1C5,1C6,1C7,1C8,1C9,1C10,1C11,1C12, duplexer filter FLT1, FLT2, overcurrent socket CP1, CP2, CP3, CP4, CPS, CP6, Wiring port RF/IN1 is connected with an end of capacitor C 1 and inductance L 1, the other end of capacitor C 1 is connected with the high go side of duplexer filter FLT1, Wiring port DATA/IN1 is connected with an end of capacitor C 2 and inductance L 2, the low go side of the other end of capacitor C 2 and duplexer filter FLT1 is connected, the mixing end of duplexer filter FLT1 is connected with an end of capacitor C 3, the other end of capacitor C 3 is connected with an end of Wiring port S/OUT1 and inductance L 3, Wiring port RF/IN2 is connected with an end of capacitor C 4 and inductance L 4, the high go side of the other end of capacitor C 4 and duplexer filter FLT2 is connected, Wiring port DATA/IN2 is connected with an end of capacitor C 5 and inductance L 5, the other end of capacitor C 5 is connected with the low go side of duplexer filter FLT2, the mixing end of duplexer filter FLT2 is connected with an end of capacitor C 6, the other end of capacitor C 6 is connected with an end of Wiring port S/OUT2 and inductance L 6, the other end of inductance L 1 is connected with the end of overcurrent socket CP1 with electric capacity 1C1, the other end of inductance L 2 is connected with the end of overcurrent socket CP2 with electric capacity 1C3, the other end of inductance L 3 is connected with overcurrent socket CP3 with electric capacity 1C6, the other end of inductance L 4 is connected with the end of overcurrent socket CP4 with electric capacity 1C7, the other end of inductance L 5 is connected with overcurrent socket CP5 with electric capacity 1C9, the other end of inductance L 6 is connected with the end of overcurrent socket CP6 with electric capacity 1C12, overcurrent socket CP1, CP2, CP3, CP4, CP5, the CP6 other end and electric capacity 1C2,1C4,1C5,1C8,1C10, the end of 1C11 connects, electric capacity 1C1,1C2,1C4,1C5,1C6,1C7,1C8,1C10,1C11, the other end common ground of 1C12.

Cable TV EOC (the Ethernet Over Coax that is used for of the present utility model, ethernet coaxial cable transmission) mixer/separator of the network rebuilding mixes the back to Data Base band signal and CATV signal realize transmitted in both directions on the coaxial cable of cable TV HFC net, is transformed into two-way a, broadband, the digitized novel access network that can adapt to multimedia service on the catv network with the One-to-All Broadcast formula.This equipment has fast wide the covering and characteristics cheaply, makes full use of the legacy network resource, and the current network of need not upgrading can cover the user in whole sub-district or building as long as single-point is just installed.According to actual conditions, only the area that demand is arranged is installed, do not need disposable deployed with devices to be put in place, each household networking cost is equivalent to about 50% of present telecommunications ADSL broadband, and bandwidth is 10 times of ADSL, is enough to satisfy the business demand of following several years.Ustomer premises access equipment can roll and drops into along with user's increase, can install as required, invest, and recovery of the capital has very strong predictable.

Description of drawings

Accompanying drawing is an electrical schematic diagram of the present utility model.

Embodiment

Referring to accompanying drawing: electrical schematic diagram mixes back output to cable TV analog or digital signal and Ethernet data signal according to the network bi-directional designing requirement of hybrid fiber coax by duplexer filter.Optical receiver port one radiofrequency signal is connected with Wiring port RF/IN1 by cable, signal is by capacitor C 1, the high go side of duplexer filter FLT1, EOC local side controller data signal is connected with Wiring port DATA/IN1 by cable, signal is by capacitor C 2, the low go side of duplexer filter FLT1, the mixing end output cable TV analog or digital of duplexer filter FLT1 and data-signal are by capacitor C 3, Wiring port S/OUT1, and Wiring port S/OUT1 connects the coaxial cable net by cable; Optical receiver port 2 radiofrequency signals are connected with Wiring port RF/IN2 by cable, signal is by capacitor C 4, the high go side of duplexer filter FLT2 end, EOC local side controller data signal is connected with Wiring port DATA/IN2 by cable, signal is by capacitor C 5, the low go side of duplexer filter FLT2, the mixing end output cable TV analog or digital of duplexer filter FLT2 and data-signal are by capacitor C 6, Wiring port S/OUT2, and Wiring port S/OUT2 connects the coaxial cable net by cable.Finish the online smooth upgrade of wired TV one-way optical receiver is EOC bi-directional light receiver at this point, realizes the network bi-directional transfer function.Wiring port RF/IN1, DATA/IN1, S/OUT1, RF/IN2, DATA/IN2, S/OUT2, inductance L 1, L2, L3, L4, L5, L6, overcurrent socket CP1, CP2, CP3, CP4, CP5, CP6, electric capacity 1C1,1C2,1C3,1C4,1C5,1C6,1C7,1C8,1C9,1C10,1C11,1C12 form independently-powered circuit, and corresponding overcurrent socket CP1, CP2, CP3, CP4, CP5 are selected in electric designing requirement according to the mistake of hybrid fiber coax, CP6 powers and cross electrical transmission.Wherein C1, C2, C3, C4, C5, C6 are high pressure resistant high frequency capacitance, FLT1, FLT2 are duplexer filter, RF/IN1, DATA/IN1, S/OUT1, RF/IN2, DATA/IN2, S/OUT2 are the cable connection port, L1, L2, L3, L4, L5, L6 are for exchanging the overcurrent inductance, CP1, CP2, CP3, CP4, CP5, CP6 are for exchanging the overcurrent socket, and 1C1,1C2,1C3,1C4,1C5,1C6,1C7,1C8,1C9,1C10,1C11,1C12 are high pressure resistant high-frequency filter capacitor.

IPization is the general trend of information network development.The transmission of a new generation's encoding and decoding technique all is based on the IP form, so the necessary IPization of front end, and front end IPization must drive the IPization of transmission network.The utility model is about to a cable TV EOC bilateral network equipment of issue " two-wayization of cable television network transformation instruction " up-to-date development according to SARFT(The State Administration of Radio and Television), the function of signal mixing output that it is inner integrated, be ethernet passive optical network (EPON, EthernetPassive Optical Network) the two-way net of technology is transformed 1 product that the online smooth upgrade of unidirectional optical receiver is the bi-directional light receiver, its unidirectional optical receiver in network is arranged is realized the technical advantage of transmitted in both directions, mainly be that unidirectional optical receiver need not be transformed, cost reduces significantly, can make full use of the coaxial cable on the existing network, unidirectional optical receiver resource, the construction of need not registering one's residence, construction volume significantly reduces, and transformation speed is fast.

Claims (1)

1. one kind is used for the mixer/separator that cable TV ethernet coaxial cable transmission network is transformed, it is characterized in that comprising Wiring port RF/IN1, RF/IN2, DATA/IN1, DATA/IN2, S/OUT1, S/OUT2, inductance L 1, L2, L3, L4, L5, L6, capacitor C 1, C2, C3, C4, C5, C6,1C1,1C2,1C3,1C4,1C5,1C6,1C7,1C8,1C9,1C10,1C11,1C12, duplexer filter FLT1, FLT2, overcurrent socket CP1, CP2, CP3, CP4, CP5, CP6, Wiring port RF/IN1 is connected with an end of capacitor C 1 and inductance L 1, the other end of capacitor C 1 is connected with the high go side of duplexer filter FLT1, Wiring port DATA/IN1 is connected with an end of capacitor C 2 and inductance L 2, the low go side of the other end of capacitor C 2 and duplexer filter FLT1 is connected, the mixing end of duplexer filter FLT1 is connected with an end of capacitor C 3, the other end of capacitor C 3 is connected with an end of Wiring port S/OUT1 and inductance L 3, Wiring port RF/IN2 is connected with an end of capacitor C 4 and inductance L 4, the high go side of the other end of capacitor C 4 and duplexer filter FLT2 is connected, Wiring port DATA/IN2 is connected with an end of capacitor C 5 and inductance L 5, the other end of capacitor C 5 is connected with the low go side of duplexer filter FLT2, the mixing end of duplexer filter FLT2 is connected with an end of capacitor C 6, the other end of capacitor C 6 is connected with an end of Wiring port S/OUT2 and inductance L 6, the other end of inductance L 1 is connected with the end of overcurrent socket CP1 with electric capacity 1C1, the other end of inductance L 2 is connected with the end of overcurrent socket CP2 with electric capacity 1C3, the other end of inductance L 3 is connected with overcurrent socket CP3 with electric capacity 1C6, the other end of inductance L 4 is connected with the end of overcurrent socket CP4 with electric capacity 1C7, the other end of inductance L 5 is connected with overcurrent socket CP5 with electric capacity 1C9, the other end of inductance L 6 is connected with the end of overcurrent socket CP6 with electric capacity 1C12, overcurrent socket CP1, CP2, CP3, CP4, CP5, the CP6 other end and electric capacity 1C2,1C4,1C5,1C8,1C10, the end of 1C11 connects, electric capacity 1C1,1C2,1C4,1C5,1C6,1C7,1C8,1C10,1C11, the other end common ground of 1C12.

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