CN103379012A - Network converging system facing convergence of three networks and achieving method - Google Patents
Network converging system facing convergence of three networks and achieving method Download PDFInfo
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- CN103379012A CN103379012A CN2013102773781A CN201310277378A CN103379012A CN 103379012 A CN103379012 A CN 103379012A CN 2013102773781 A CN2013102773781 A CN 2013102773781A CN 201310277378 A CN201310277378 A CN 201310277378A CN 103379012 A CN103379012 A CN 103379012A
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Abstract
The invention discloses a network converging system facing convergence of three networks and an achieving method. The network converging system comprises a receiving board card used for receiving a high-frequency simulation signal from a cable television network, performing analog-digital conversion and converting an analog signal into a digital signal, a sending board card, an NIC network card and a serial port. The sending board card is used for being connected with a cable television network through a modulator and sending data to the cable television network. The NIC network card is used for being connected with the Ethernet, sending data to the Ethernet and receiving data from the Ethernet. The serial port is used for being connected with a PSTN network through a modem. According to the network converging system facing integration of three networks and the achieving method, one network converging system or one converging device is used for achieving convergence of multiple networks, network adapters of multiple networks of the converging system play a role of forwarding network data and converging and converting the data, converging more than one network can be effectively achieved and transparent services are provided for users.
Description
Technical field
The present invention relates to the triple play technology field, relate in particular to a kind of network integration system and implementation method of triple play oriented.
Background technology
At present, divide network according to sector application and mainly can be divided into three kinds of networks, i.e. computer network, telephone network, cable TV network.Technical foundation has been established in develop into telecommunications, computer and the radio and television integration of three networks of digital technology.The information such as sound, data and image can adopt unified number transmission, exchange and distribute, and have melted the basic fundamental barrier film of dividing three business.The development of network technology, software engineering makes each macroreticular finally can both support various functions and business, and different business can be run on same throwing the net fully.Technically, the network integration has been that when the water comes, a channel is formed.Telecommunications, broadcasting and TV, INTERNET three industries have also developed into present stage, and the angle from complying with the market demand and saving social resources merges, interpenetrating becomes irresistible trend mutually, and merging becomes inevitable trend.
The research Network Convergence Technology, can constantly excavate strong point and the defective of original disparate networks, promote the development of various aspects of the network technologies such as modulation-demodulation technique of original Internet Transmission, network route, Qos control, reliability engineering, telecommunication technology, digital communication, update the application level of legacy network, popularize original network application, attract the novel network user all to be significant.Traditional network application mode mainly contains TV applications pattern, phone application pattern, computer networking application model etc., along with the development of video/audio encoding and decoding technology, the appearance of information-based electronization, above-mentioned three kinds of network application modes constantly intersect mutually, compatible, mutual replenishing, and then various network application modes appearred, these application models are closely similar each other, but mutually incompatible, cause the significant wastage of social resources, the communication resource, also greatly hindered further expansion and the progress of network application; Therefore exploring that a kind of new network general, compatible above-mentioned topmost three kinds of network application modes uses is important research content in the present network research.
Existing technology and equipment is all towards a certain network, can not be in same equipment compatible three kinds of networks, realize the integration of three networks, can not accomplish that still the seamless network integration connects.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, the invention provides a kind of network integration system and implementation method of triple play oriented, serve as the role of network data forwarding and data fusion conversion by a plurality of network of network adapters of emerging system, can effectively realize the fusion of a plurality of networks.
In order to address the above problem, the present invention proposes a kind of network integration system of triple play oriented, described system comprises:
Receive integrated circuit board, be used for receiving high frequency analog signals from cable TV network, carry out analog-to-digital conversion, analog signal conversion is become digital signal;
Send integrated circuit board, be used for linking to each other with cable TV network by modulator, and send data to cable TV network;
The NIC network interface card is used for linking to each other with Ethernet, and transmits and receive data to Ethernet;
Serial ports is used for linking to each other with the PSTN network by modulator-demodulator.
Preferably, described reception integrated circuit board is that NCP7021C receives integrated circuit board.
Preferably, described transmission integrated circuit board is that Stringhighway sends integrated circuit board.
Preferably, described reception integrated circuit board also is used for judging according to sync byte the original position of TS stream, and carries out validation verification, and invalid data is abandoned.
Preferably, described TS stream comprises Program Specific Information PSI and business information SI.
Preferably, described Program Specific Information PSI comprises Program Association Table PAT, Program Map Table PMT, network information table NIT, conditional access table CAT.
Preferably, the output channel that described Stinghighway sends integrated circuit board adopts the high precision numerical control clock source, makes bit rate output between 0-216Mbps, and is accurately adjustable with the step-length of 8bps; And the support non-burst of ASI and burst mode.
Correspondingly, the embodiment of the invention also discloses a kind of implementation method of network integration system of triple play oriented, described method comprises:
Receive high frequency analog signals by receiving integrated circuit board from cable TV network, carry out analog-to-digital conversion, analog signal conversion is become digital signal;
Send data by sending integrated circuit board to cable TV network;
Transmit and receive data to Ethernet by the NIC network interface card;
Transmit and receive data to the PSTN network by serial ports.
Preferably, describedly receive high frequency analog signals by receiving integrated circuit board from cable TV network, carry out analog-to-digital conversion, become the step of digital signal also to comprise analog signal conversion: the original position of judging TS stream according to sync byte, and carry out validation verification, invalid data is abandoned.
Preferably, describedly comprise to the step that cable TV network sends data by sending integrated circuit board: adopt the high precision numerical control clock source, make bit rate output between 0-216Mbps, accurately adjustable with the step-length of 8bps; And the support non-burst of ASI and burst mode.
In embodiments of the present invention, realize the fusion of a plurality of networks by an emerging system or fusion device, the role who serves as network data forwarding and data fusion conversion by a plurality of network of network adapters of emerging system, can effectively realize the fusion of a plurality of networks, and provide a kind of transparent service for the user.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is that the structure of network integration system of the triple play oriented of the embodiment of the invention forms schematic diagram.
Fig. 2 is that the concrete structure of network integration system of the triple play oriented of the embodiment of the invention forms schematic diagram;
Fig. 3 is that network integration system receives the schematic diagram that integrated circuit board is realized the fusion of TV network and IP network by NCP7201C in the embodiment of the invention;
Fig. 4 is the schematic diagram that the networking emerging system connects telephone network in the embodiment of the invention by Serial Port Line;
Fig. 5 is the view of system architecture in the embodiment of the invention;
Fig. 6 is the data receiver of the embodiment of the invention and the process schematic diagram of transmitting thread;
Fig. 7 is the schematic flow sheet of implementation method of network integration system of the triple play oriented of the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Network integration system involved in the present invention has the interface of each UNE, is intercommunication in physical layer between the network.The signal of a network can directly transmit, and perhaps through tissue, conversion, is sent in another network and goes, or when arriving user terminal by other network delivery, do not change the content of information.That is to say that signal is mutually transparent between network.The user only links with a physical network, just can enjoy other networks resource or with other networks on telex network.The business of each network can be separate, do not hinder mutually, and can be as in the past on network separately independent development oneself professional.Agreement between the different nets can compatible or conversion.
Below in conjunction with Fig. 1 the network integration system of the triple play oriented of the embodiment of the invention is described in detail.Fig. 1 is that the structure of network integration system of the triple play oriented of the embodiment of the invention forms schematic diagram, and as shown in Figure 1, this system comprises:
Receive integrated circuit board 10, be used for receiving high frequency analog signals from cable TV network, carry out analog-to-digital conversion, analog signal conversion is become digital signal;
Send integrated circuit board 11, be used for linking to each other with cable TV network by modulator, and send data to cable TV network;
NIC network interface card 2 is used for linking to each other with Ethernet, and transmits and receive data to Ethernet;
This reception integrated circuit board is that NCP7021C receives integrated circuit board, and sending integrated circuit board is that Stringhighway sends integrated circuit board.
Below in conjunction with Fig. 2 the network integration system of triple play oriented of the present invention is elaborated.As shown in Figure 2 be the structural representation of the network integration of the present invention.Network integration system realizes the core system of the network integration among this figure, it can merge three networks: cable TV (Cable Television, CATV) network, ethernet network, PSTN (Public Switched Telephone Network, PSTN).Realize the fusion of three networks, must in network integration system, be equipped with a plurality of network interface unit, receive integrated circuit board, Stringhighway transmission integrated circuit board, NIC network interface card, serial ports etc. such as NCP7021C.Be the fusion that realizes with catv network such as the interface 1 among Fig. 2, be specially the input and output hardware interface of network integration equipment and cable television network, mainly by receiving integrated circuit board NCP7021C and transmission integrated circuit board Stringhighway realizes sending.The NCP7021C card is supported the operating systems such as windows98/ME/2000/XP.Network integration system links to each other by the NIC network interface card realization shown in the interface 2 among Fig. 2 and Ethernet; Network integration system links to each other with the PSTN network by the interface 3 among Fig. 2, and the serial ports that is specially by equipment links to each other with modulator-demodulator linking to each other of then realization and telephone network.
Shown in Figure 3 is that network integration system receives the fusion that integrated circuit board is realized TV network and IP network by NCP7201C, and the below is elaborated to this process.Shown in Figure 3 is the structural principle schematic diagram that NCP7201C receives integrated circuit board.
Receive integrated circuit board and receive high frequency analog signals from cable television network, carry out analog-to-digital conversion, analog signal conversion is become digital signal; And judge the original position of TS stream according to sync byte, thus obtain TS stream and carry out validation verification, invalid data is directly abandoned.If the signal of Digital Television does not then need to carry out analog-to-digital conversion.TS stream is a service integration stream, comprising Program Specific Information (Program Special Information, PSI) and business information (Service information, SI).The PSI information of MPEG-2 system layer appointment comprises Program Association Table (ProgramAssociation Table PAT), Program Map Table (Program Map Table, PMT), network information table (Network Information Table, NIT), conditional access table (Conditional Access Table, CAT).
Be 0 PAT in order to seek the stream with the TS of IP data, at first to search for PID, in PAT, comprise the PID of all programs.Find the pid value of respective stream of data by the information table among the PAT, then find out by this value and comprise the TS stream that protects data, the data in this TS stream are extracted and be reduced into the multi-protocol encapsulation bag according to consensus standard.Then the multi-protocol encapsulation bag that obtains is carried out correctness and address validation verification, be reduced into according to multi-protocols envelope mechanism if data are legal and just wrap and send to network layer.
The Stinghighway data send the integrated circuit board output channel and adopt the high precision numerical control clock source, make bit rate output between 0-216Mbps, and are accurately adjustable with the step-length of 8bps; Support the non-burst of ASI and burst mode, the built-in input equalizer of input channel, signal integrity and low error rate when guaranteeing long Distance Transmission; Hold hardware synchronization pattern and software synchronization pattern.The design of can simplifying procedures of hardware synchronization pattern, and the software synchronization pattern can be supported the input of source code flow; Design with multi-channel DMA, remarkable transmission performance is provided, and CPU is freed fully from transmission work, can be engaged in the affairs of more computing and treatability, plate up to the 16M byte carries high-speed cache, guaranteed in the relatively busy situation of CPU, not occur that output code flow interrupts or the situation of input code flow packet loss, made system's operation more reliable and more stable.String highway sends cartoon ovennodulation device and links to each other with cable TV network.
Relate to the networking emerging system by Serial Port Line with modulator-demodulator (Modem) thus the principle that is connected telephone network as shown in Figure 4.Detailed process is:
Step 1: transmitting terminal is by telephone set dialing call peer, and telephone exchange sends the dialing call signal to the other side, after the other side DCE receives this signal, makes bell signal (RI) effective, notice DTE, called; Turn step 2;
Step 2: behind the other side's " off-hook ", two sides have set up communication link; If computer will send data to the other side, at first send request to send signal (RTS) by interface circuit (DTE), at this moment, if DCE (Modem) allows to transmit, then answer to DTE and allow to send (CTS) signal; Generally can directly RTS/CTS be connect high level, namely as long as communication link is set up, just can transmit signal; RTS/CTS can only be used for the switching that half-duplex system is made send mode and receive mode;
Step 3: after DTE obtained cts signal, DCE sent serial signal by the TXD alignment, and DCE (Modem) becomes analog signal (claiming again carrier signal) with these digital signal modulateds, passed to the other side; Before computer transmits new data to DTE " data output register ", should check that Modem state and data output register are for empty;
Step 4: after the other side's DCE receives carrier signal, send DCD signal (data carrier detects) to the other side's DTE, notify its DTE to prepare to receive; Simultaneously, carrier signal is demodulated into data-signal, give DTE from the RXD line, DTE is shifted to the bit stream that receives by the serial received shift register, behind whole bit streams of receiving 1 character, the data bit of this character is delivered to data input register, and CPU can be from the data input register reading character.
System architecture of the present invention is shown in the represented state diagram of Fig. 5.At first software startup configures each parameter and enters ready state, receives that commencing signal starts the statistics thread immediately, and save data thread, packet receive transmits thread; Then enter monitor state, at this moment as receive the Transmit message signal then the startup file send-thread get back to subsequently monitor state, get back to monitor state if receive after the screen transmitted signal then starts video transmission process.Then close all survival threads if receive stop signal under monitor state, releasing memory is got back to ready state; Under ready state, receive shutdown signal then whole process stop.
Need to prove at last the flow process of data receiver and forwarding thread.As shown in Figure 6, specific as follows:
Step 1: equipment is caught original packet by network adapter; Turn step 2;
Step 2: the legitimacy of check data bag, if the legal step 3 that turns; Otherwise turn step 5;
Step 3: handle packet, the row format of going forward side by side conversion; Turn step 4;
Step 4: send data.Select corresponding network interface card to carry out data retransmission according to objective network; Turn step 1;
Step 5: abandon data and do corresponding processing, the processing here mainly is a statistics of carrying out packet loss; Turn step 1.
In embodiments of the present invention, realize the fusion of a plurality of networks by an emerging system or fusion device, the role who serves as network data forwarding and data fusion conversion by a plurality of network of network adapters of emerging system, can effectively realize the fusion of a plurality of networks, and for the user provides a kind of transparent service, be that the user does not need to understand service is from which concrete network, and only need to as processing common data, process.
The embodiment of the invention also provides a kind of implementation method of network integration system of triple play oriented, and as shown in Figure 7, the method comprises:
S701 receives high frequency analog signals by receiving integrated circuit board from cable TV network, carries out analog-to-digital conversion, and analog signal conversion is become digital signal;
S702 sends data by sending integrated circuit board to cable TV network;
S703 transmits and receive data to Ethernet by the NIC network interface card;
S704 transmits and receive data to the PSTN network by serial ports.
Wherein S701 further comprises: judge the original position of TS stream according to sync byte, and carry out validation verification, invalid data is abandoned.
S702 comprises: adopts the high precision numerical control clock source, makes bit rate output between 0-216Mbps, and accurately adjustable with the step-length of 8bps; And the support non-burst of ASI and burst mode.
The implementation procedure of the implementation method of the network integration system of the triple play oriented in the embodiment of the invention and principle can referring among the embodiment of the network integration system of triple play oriented of the present invention about the description of functions of modules principle, repeat no more here.
One of ordinary skill in the art will appreciate that all or part of step in the whole bag of tricks of above-described embodiment is to come the relevant hardware of instruction finish by program, this program can be stored in the computer-readable recording medium, storage medium can comprise: read-only memory (ROM, Read Only Memory), random access memory (RAM, RandomAccess Memory), disk or CD etc.
In addition, more than network integration system and the implementation method of triple play oriented that the embodiment of the invention is provided be described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. the network integration system of a triple play oriented is characterized in that, described system comprises:
Receive integrated circuit board, be used for receiving high frequency analog signals from cable TV network, carry out analog-to-digital conversion, analog signal conversion is become digital signal;
Send integrated circuit board, be used for linking to each other with cable TV network by modulator, and send data to cable TV network;
The NIC network interface card is used for linking to each other with Ethernet, and transmits and receive data to Ethernet;
Serial ports is used for linking to each other with the PSTN network by modulator-demodulator.
2. the network integration system of triple play oriented as claimed in claim 1 is characterized in that, described reception integrated circuit board is that NCP7021C receives integrated circuit board.
3. the network integration system of triple play oriented as claimed in claim 1 is characterized in that, described transmission integrated circuit board is that Stringhighway sends integrated circuit board.
4. the network integration system of triple play oriented as claimed in claim 2 is characterized in that, described reception integrated circuit board also is used for judging according to sync byte the original position of TS stream, and carries out validation verification, and invalid data is abandoned.
5. the network integration system of triple play oriented as claimed in claim 4 is characterized in that, described TS stream comprises Program Specific Information PSI and business information SI.
6. the network integration system of triple play oriented as claimed in claim 5 is characterized in that, described Program Specific Information PSI comprises Program Association Table PAT, Program Map Table PMT, network information table NIT, conditional access table CAT.
7. the network integration system of triple play oriented as claimed in claim 3, it is characterized in that, the output channel that described Stinghighway sends integrated circuit board adopts the high precision numerical control clock source, makes bit rate output between 0-216Mbps, and is accurately adjustable with the step-length of 8bps; And the support non-burst of ASI and burst mode.
8. the implementation method of the network integration system of a triple play oriented is characterized in that, described method comprises:
Receive high frequency analog signals by receiving integrated circuit board from cable TV network, carry out analog-to-digital conversion, analog signal conversion is become digital signal;
Send data by sending integrated circuit board to cable TV network;
Transmit and receive data to Ethernet by the NIC network interface card;
Transmit and receive data to the PSTN network by serial ports.
9. the implementation method of the network integration system of triple play oriented as claimed in claim 8, it is characterized in that, describedly receive high frequency analog signals by receiving integrated circuit board from cable TV network, carry out analog-to-digital conversion, become the step of digital signal also to comprise analog signal conversion: the original position of judging TS stream according to sync byte, and carry out validation verification, invalid data is abandoned.
10. the implementation method of the network integration system of triple play oriented as claimed in claim 9, it is characterized in that, describedly comprise to the step that cable TV network sends data by sending integrated circuit board: adopt the high precision numerical control clock source, make bit rate output between 0-216Mbps, accurately adjustable with the step-length of 8bps; And the support non-burst of ASI and burst mode.
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| CN201204644Y (en) * | 2008-06-10 | 2009-03-04 | 顾士平 | Low cost low-power consumption credible coaxial-cable tri-network amalgamation system base on SOC |
| CN101557446A (en) * | 2009-03-31 | 2009-10-14 | 北京《中华魂》网络信息中心 | Micro computer system with integration of three networks |
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Application publication date: 20131030 |