CN1338843A - Remote mirroring education system based on broadband network for school - Google Patents
Remote mirroring education system based on broadband network for school Download PDFInfo
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- CN1338843A CN1338843A CN 01124089 CN01124089A CN1338843A CN 1338843 A CN1338843 A CN 1338843A CN 01124089 CN01124089 CN 01124089 CN 01124089 A CN01124089 A CN 01124089A CN 1338843 A CN1338843 A CN 1338843A
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- 239000000872 buffer Substances 0.000 claims description 5
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Abstract
A remote mirroring education system based on broadband network for school is disclosed, which includes such steps as manually transmitting the education contents to computer room by magnetic tape or audio-video transmission, compressing and streaming the education contents by multi-hannel or single-channel equipment, receiving modulated signal, demodulating, multi-channel receiving and streaming, and storing them to VOD server.
Description
(1) technical field
The invention belongs to the broadband network application, specially refer to, in realizing long-distance education, based on the foundation of school's remote mirroring education system of broadband network.
(2) technical background
Education, be that nationality is prosperous originally, therefore, grab education, just the cultivation of arresting, always be the cardinal task of party and state, the cultivation of generation Talent Quality, be to set about picking up from primary school, junior middle school even stage more early, our country sets up a considerable amount of key universities, key school and primary school, also is intended to set an example and the model, drives more school, the student imitates, develops.The student that can enter key school is minority after all; The more student who fails to enter the emphasis school thirsts for receiving the education identical with the emphasis school, this will depend on advanced high-tech means and realize this hope, in the phase of history in the past, take to hold network school, carry out remote teaching, this technical scheme, comparative maturity mainly is that the WEB website is set on the internet, and the student of network school is by internet access WEB website, browse courseware, thereby learn.It is that the website groundwork is to make courseware that but there is disadvantage in this mode, by the teacher write text books and the professional make webpage, all be very time-consuming, the thing of effort, the courseware development in one term of a branch, the teacher often needs to spend 3-4 month and writes special teaching material, the professional need spend 3-4 month and make webpage, expense expenditure needs hundreds of thousands yuan, in addition network school's course has tens branches, and its courseware development workload is considerable especially, and, say from effect, because courseware mainly showed on the net by literal and picture, the effect of browsing courseware as the reading textbook, can make the student feel dry as dust especially.
For overcoming above-mentioned defective, once some long-distance education network school had made the VCD CD that the teacher teaches specially, but because the limitation of manpower and financial resources, even if numerous CDs also are difficult to satisfy so extensively numerous students' of network school demand, existing camera technique, the single channel video compression technology all can't realize Remote Switched Port Analyzer education and education synchronously simultaneously.Thereby existing network school also thirsts for innovating a kind of technical scheme, goes to realize comprehensive Remote Switched Port Analyzer education.On the basis (related content has been declared national patent) of having carried out " the multichannel real-time television programme acquisition storage system that is used for the community broad band network " exploitation, this development group has has further researched and developed the school's remote mirroring education system based on broadband network.
(3) summary of the invention
Rely on shooting and single channel video compression technology can't realize the defective of Remote Switched Port Analyzer education in order to solve in the existing Web education, and developing a kind of school's remote mirroring education system based on broadband network again in the content of courses, the student of network school can accept the duplicate education with the student at school.For solving this purpose, rely on following technical proposals to realize that the school's remote mirroring education system based on broadband network mainly includes:
Courseware collection in real time, data compression transmission, video request program is characterized in that, the mode that its data compression transmits is:
A) arrive machine room by the magnetic tape transport that manually record is had courseware content, also can be sent to machine room, utilize the multichannel courseware that is arranged on machine room to gather compression device, realize multiple compression and streamingization, store the VOD server then into by the audio frequency and video line.
B) carry out the single channel compression by the single channel courseware collection compression transfer equipment that is arranged on the classroom, compression digital signal is sent into corresponding channel through the modulation signal that modulator forms particular channel, be sent to machine room through in the school cable broadband local area network (LAN), utilize the multipath reception streaming equipment that is provided with, modulation signal to each channel of receiving carries out demodulation, realize multipath reception and streamingization, store the VOD server then into.
C) gather compression device by the single channel courseware that is arranged on the classroom and carry out the single channel compression, compression digital signal is sent into corresponding channel through the modulation signal that modulator forms particular channel, be sent to machine room through in the school WiMAX local area network (LAN), utilize the multipath reception streaming equipment that is provided with, the modulation signal that receives each channel is carried out demodulation, realize multipath reception and streamingization, store the VOD server then into.
Said single channel courseware collection compression transfer equipment, work according to the following steps:
A) audio signal of sending here by picture pick-up device, the digital audio and video signals of formation different-format behind audio frequency analog to digital converter and audio coder; The vision signal of being sent here by picture pick-up device forms the digital video signal of different-format behind analog video decoder device, video pre-processing filter and video encoder simultaneously.
B) they being delivered to digital signal manages device outward and packs and handle to form combined-flow.
C) this system flow is sent into modulator, the modulation signal that meets the concrete characteristic of channel with formation is sent into corresponding channel and is transmitted (as Ethernet etc.).
Said multipath reception, streamingization are to work according to the following steps:
A) modulation signal that is received by campus network is sent into the network interface of equipment, and this network interface carries out demodulation to the modulation signal that receives under the control of controller, and isolates the base band code stream of different channels according to different Network Recognition addresses.
B) isolated different base band code stream is sent in the corresponding buffer and preserves, and the base band code stream that is kept in each buffer carries out justification in o controller.
As a kind of example of Remote Switched Port Analyzer education, the ordering server of configuration, concurrent stream are 300, the memory space of memory device is 500G, arranging 50 concurrent streams in the 300 concurrent streams is that the courseware wheel is broadcast, and tens coursewares that recorded the same day are broadcasted per hour to take turns the mode of broadcasting once; Arranging 250 concurrent streams is courseware VOD, for the student of network school program request.Dispose 8 circuit-switched data compression devices at machine room, network school can provide 750 nets to broadcast to student wheel or the courseware of program request can cover every class of each class of 6 grades, every subject so, and the acoustic image courseware can be substituted by new class then in one week of server repository.The student of network school or directly by broadband metropolitan area network perhaps by acting server visit Remote Switched Port Analyzer Educational website, when the student watches courseware, can have dual mode, and a kind of some broadcast mode can select to wish the courseware watched arbitrarily, and another kind is the mode of broadcasting; Select courseware in the courseware of can only trailing wheel broadcasting, so the readability of watching video shows is identical with the VCD program.
The positive benefit of this programme is, because based on broadband network, it is very easy to make the content of courses, do not need teacher's write specialized teaching material and professional to make this effort of webpage, time-consuming, costly heavy work, and only need on the classroom, to make a video recording in real time, carry out digital compression then, broadband networks transmits.Can realize Remote Switched Port Analyzer education.
(4) description of drawings
Fig. 1 is a single channel courseware collection compression transfer equipment schematic diagram;
Fig. 2 is multipath reception, streaming equipment schematic;
Fig. 3 is one of schematic diagram embodiment that realizes remote mirroring education system;
Fig. 4 is two of the schematic diagram embodiment that realizes remote mirroring education system;
Fig. 5 is three of the schematic diagram embodiment that realizes remote mirroring education system.
(5) embodiment
With reference to Fig. 1, expression single channel courseware is gathered and compression transmits FB(flow block) with and the explanation of equipment disposition, by the audio signal that picture pick-up device is sent here, behind audio frequency analog to digital converter and audio coder, form the digital audio and video signals of different-format; The vision signal of being sent here by picture pick-up device forms the digital video signal of different-format behind analog video decoder device, video pre-processing filter and video encoder simultaneously.They are delivered to digital signal manages device outward and packs and handle to form combined-flow.This system flow is sent into modulator, and the modulation signal that meets the concrete characteristic of channel with formation is sent into corresponding channel and is transmitted (as Ethernet etc.).
With reference to Fig. 2, expression multipath reception, streaming equipment schematic, expression is finally passed out in the corresponding buffers with base band stream and is preserved by the signal that campus network receives.
With reference to Fig. 3, the remote mirroring education system that expression is gathered based on the multichannel courseware.
With reference to Fig. 4, expression is based on the remote mirroring education system of the broadband cabled campus network of single channel.
With reference to Fig. 5, expression is based on the remote mirroring education system of single channel broadband wireless campus network.
Claims (3)
1, based on school's remote mirroring education system of broadband network, this system comprises courseware collection, data compression transmission, video request program composition, it is characterized in that, carries out data compression as follows and transmits:
A) arrive machine room by the magnetic tape transport that manually record is had courseware content, also can be sent to machine room, utilize the multichannel courseware that is arranged on machine room to gather compression device, realize multiple compression and streamingization, store the VOD server then into by the audio frequency and video line.
B) carry out the single channel compression by the single channel courseware collection compression transfer equipment that is arranged on the classroom, compression digital signal is conveyed into corresponding channel through the modulation signal that modulator forms particular channel, deliver to machine room through cable broadband local area network (LAN) in the school, utilize the multipath reception streaming equipment that is provided with, modulation signal to each channel of receiving carries out demodulation, realize multipath reception and streamingization, store the VOD server then into.
C) gather compression device by the single channel courseware that is arranged on the classroom and carry out the single channel compression, compression digital signal is sent into corresponding channel through the modulation signal that modulator forms particular channel, be sent to machine room through in the school WiMAX local area network (LAN), utilize the multipath reception streaming equipment that is provided with, the modulation signal that receives each channel is carried out demodulation, realize multipath reception and streamingization, store the VOD server then into.
2, remote mirroring education system according to claim 1 is characterized in that, said single channel courseware collection compression transfer equipment carries out work by following step,
A) audio signal of sending here by picture pick-up device, the digital audio and video signals of formation different-format behind audio frequency analog to digital converter and audio coder; The vision signal of being sent here by picture pick-up device forms the digital video signal of different-format behind analog video decoder device, video pre-processing filter and video encoder simultaneously.
B) each they deliver to digital signal and manage device outward and pack and handle to form combined-flow.
C) this system flow is sent into modulator, the modulation signal that meets the concrete characteristic of channel with formation is sent into corresponding channel and is transmitted.
3, remote mirroring education system according to claim 1 is characterized in that,
Said multipath reception, streamingization are to work according to the following steps:
A) modulation signal that is received by campus network is sent into the network interface of equipment, this network
Interface carries out demodulation to the modulation signal that receives under the control of controller, and isolates the base band code stream of different channels according to different Network Recognition addresses.
B) isolated different base band code stream is sent in the corresponding buffer and preserves, and the base band code stream that is kept in each buffer carries out justification in o controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB01124089XA CN1157896C (en) | 2001-08-14 | 2001-08-14 | Remote mirroring education system based on broadband network for school |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB01124089XA CN1157896C (en) | 2001-08-14 | 2001-08-14 | Remote mirroring education system based on broadband network for school |
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| Publication Number | Publication Date |
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| CN1338843A true CN1338843A (en) | 2002-03-06 |
| CN1157896C CN1157896C (en) | 2004-07-14 |
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| CNB01124089XA Expired - Fee Related CN1157896C (en) | 2001-08-14 | 2001-08-14 | Remote mirroring education system based on broadband network for school |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1317660C (en) * | 2003-03-31 | 2007-05-23 | 联想(北京)有限公司 | Realizing method of sharing virtual optical disk network and its system |
| CN100382080C (en) * | 2004-10-29 | 2008-04-16 | 中国科学院研究生院 | Data processing method supporting quick retrieve of education source metadata |
-
2001
- 2001-08-14 CN CNB01124089XA patent/CN1157896C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1317660C (en) * | 2003-03-31 | 2007-05-23 | 联想(北京)有限公司 | Realizing method of sharing virtual optical disk network and its system |
| CN100382080C (en) * | 2004-10-29 | 2008-04-16 | 中国科学院研究生院 | Data processing method supporting quick retrieve of education source metadata |
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| Publication number | Publication date |
|---|---|
| CN1157896C (en) | 2004-07-14 |
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Owner name: BEIJING BROADBAND LIFE MIDIA TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: BAI LI Effective date: 20100604 |
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Free format text: CORRECT: ADDRESS; FROM: 100011 ROOM 606, GATE 6, BUILDING 20, QINGNIANHUDONGLI, DONGCHENG DISTRICT, BEIJING TO: 100088 ROOM 207, BUILDING 5, YARD 32, XIZHIMEN NORTH STREET, HAIDIAN DISTRICT, BEIJING |
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Effective date of registration: 20100604 Address after: 100088, room 5, building 32, 207 North Main Street, Haidian District, Beijing, Xizhimen Patentee after: Beijing broadband living Media Technology Co., Ltd. Address before: 100011, Beijing, Dongcheng District Youth Lake East, No. 20, building 6, Room 606 Patentee before: Bai Li |
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