CN105871489A - Campus broadcast system - Google Patents
Campus broadcast system Download PDFInfo
- Publication number
- CN105871489A CN105871489A CN201610116769.9A CN201610116769A CN105871489A CN 105871489 A CN105871489 A CN 105871489A CN 201610116769 A CN201610116769 A CN 201610116769A CN 105871489 A CN105871489 A CN 105871489A
- Authority
- CN
- China
- Prior art keywords
- terminal
- instructional terminal
- broadcasting system
- radio receiving
- instructional
- Prior art date
- 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.)
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
- H04H20/61—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for local area broadcast, e.g. instore broadcast
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/65—Arrangements characterised by transmission systems for broadcast
- H04H20/71—Wireless systems
- H04H20/72—Wireless systems of terrestrial networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
- H04L12/185—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast with management of multicast group membership
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
- H04L12/189—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast in combination with wireless systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/61—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
- H04L65/611—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio for multicast or broadcast
Abstract
The invention discloses a campus broadcast system. The system comprises a device management server, multicast servers and multiple groups of teaching terminals. The device management server, the multicast servers and the teaching terminals are connected by a network. Each teaching terminal is connected with a local multimedia device and moreover is connected with a handheld terminal wirelessly. According to the system, the audio/video information of the specific multicast servers can be transmitted to the specific teaching terminals in a broadcast mode, and further the audio/video information is transmitted to onsite teachers and students by the connected multimedia devices.
Description
Technical field
The present invention relates to a kind of broadcast system, especially relate to a kind of Campus Broadcasting System.
Background technology
In current teaching and other work needing applying electronic blank and life, adopt greatly
Sense hands motion track on electronic whiteboard with infrared sensor, and data are passed through USB interface from electricity
Sub-blank is sent to computer；Computer is internally installed mapping software, and according to the data received, drafting is sold
Motion track on blank, and show on computer screen；Computer screen content is again by computer
HDMI/VGA interface connecting line, is transferred to projector；The light of projector projects on electronic whiteboard, reduction
The movement locus sold.Owing to this process is the Millisecond time, human eye cannot discover its time delay, and sensation is just
Seem hands while movement, as lines have just write on electronic whiteboard.
The realization of said process is all by Data Over Cable, and this brings inconvenience to the connection of each equipment,
Will also result in classroom or meeting room space untidy simultaneously.
For solving problem above, it is proposed that a kind of instructional terminal, the data transmission of electronic whiteboard with computer,
And the data of computer and projector transmit to change into and be wirelessly transferred, connection can be greatly facilitated, purify religion
Room or meeting room space, simplify operation switching during projection.The connecting line that is implemented without of whole process is carried out
Connecting, seem that to have flown to projector the same for the track of electronic whiteboard, we are named to it and cry instructional terminal.
Existing Campus Broadcasting System, is a typical one-to-many broadcast model.The speech of school leader may
Simply with regard to a certain part thing for specific teachers and students, other teachers and students need not understand；Meanwhile, another part
Thing needs again to convey to other a group teachers and students.Due to existing one-to-many broadcast model, it is impossible to solve above-mentioned
Demand, so can only have to take the second best, first broadcast something, then broadcast other something, to a lot
Unrelated teachers and students both interfered, and cannot cause again the attention about teachers and students, and effect is bad.
Summary of the invention
For solving the deficiencies in the prior art so that relevant issues only convey to related personnel, and the present invention proposes
A kind of Campus Broadcasting System solution, including:
Device management server；
Multicast server；
Organize instructional terminal more；
Described device management server, multicast server are connected by network with instructional terminal；
Each instructional terminal is all connected with local multimedia equipment, is wirelessly connected with handheld terminal simultaneously.
Further, described instructional terminal, including:
Processor；
It is connected with described processor, for data cached memorizer；
It is connected with described processor, for receiving the handwriting trace receiver module of electronic whiteboard track data；
It is connected with described handwriting trace receiver module, for connecting the USB interface of electronic whiteboard；
For the first radio receiving transmitting module of handheld terminal described in wireless connections, both can be transmitted across with wireless receiving
The screen of handheld terminal data come, it is also possible to wireless transmission writing track data is to handheld terminal；
It is connected with described processor, for connecting the second radio receiving transmitting module of external network；
It is connected with described processor, for connecting the HDMI of exterior display device；
Connect described processor, the first radio receiving transmitting module and the power module of the second radio receiving transmitting module.
As the improvement of such scheme, described handheld terminal includes but are not limited to be provided with electronic whiteboard and draws
Software computer, iPad and Android device with screen content wireless base station apparatus.
As the improvement of such scheme, described instructional terminal also includes being connected with described processor, is used for opening
Dynamic control and the startup/clock circuit of clock alignment, described startup/clock circuit also with described power module phase
Even.
As the improvement of such scheme, described instructional terminal also includes being connected with described processor, is used for passing
The Audio interface of defeated audio signal.
As the improvement of such scheme, described instructional terminal also includes the LAN being connected with described processor
Interface, for wired connection external network.
Further, described LAN interface and the first radio receiving transmitting module, the second radio receiving transmitting module pass through
One bridging functionality module is connected.
Compared with prior art, campus network disclosed by the invention, it is possible to achieve by specific multiast service device
Audio/video information conveys to specific instructional terminal in a broadcast manner, and then by the multimedia equipment of connection
Convey to on-the-spot teachers and students.The audio/video information of multicast server transmission can be the audio-video document existed,
Can also be by photographic head, the audio, video data of mike Real-time Collection.
Accompanying drawing explanation
Fig. 1 is the structural representation of one specific embodiment of campus broadcasting net of the present invention；
Fig. 2 is the structural representation of instructional terminal in Fig. 1；
Fig. 3 is handheld terminal and the workflow diagram of instructional terminal in the present invention；
Fig. 4 is campus broadcasting net workflow diagram of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly
Chu, be fully described by, it is clear that described embodiment be only a part of embodiment of the present invention rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creation
The every other embodiment obtained under property work premise, broadly falls into the scope of protection of the invention.
Refer to Fig. 1, Campus Broadcasting System of the present invention, including:
Device management server 1；
Multicast server 2；
Organize instructional terminal more；As shown in FIG., instructional terminal 1001-100n can represent and install classroom in the first year
Interior instructional terminal, instructional terminal 2001-200n can represent the instructional terminal being arranged in second grade classroom, depend on
Teaching, the office spaces such as this analogizes, all of classroom, campus, teacher office, all can be provided with teaching eventually
End；
Described device management server 1, multicast server 2 are connected by network with instructional terminal；
Each instructional terminal is all connected with local multimedia equipment, is wirelessly connected with handheld terminal simultaneously, such as figure institute
The local multimedia equipment 10001-1000n shown can represent the multimedia equipment being installed on a classroom, this
Ground multimedia equipment 20001-2000n represents and is installed on sophomoric local multimedia equipment, handheld terminal
11001-1n00n represents the handheld terminal connecting an instructional terminal, and 21001-2n00n imparts knowledge to students with second grade
The handheld terminal that terminal is connected, described multimedia equipment includes such as equipment such as projector, audio amplifier, electronic whiteboards；
Wherein said instructional terminal, as in figure 2 it is shown, include:
Processor 11；
It is connected with described processor 11, for data cached memorizer 12；
It is connected with described processor 11, for receiving the handwriting trace receiver module of electronic whiteboard track data
13；
It is connected with described handwriting trace receiver module 13, for connecting the usb 14 of electronic whiteboard；
For the first radio receiving transmitting module 15 of handheld terminal described in wireless connections, both can send with wireless receiving
The screen of handheld terminal data come over, it is also possible to wireless transmission writing track data is to handheld terminal；
It is connected with described processor, for connecting the second radio receiving transmitting module 16 of external network；
It is connected with described processor, for connecting the HDMI 17 of exterior display device；
As an embodiment of instructional terminal of the present invention, also include be connected with described processor 11
LAN interface 111, for wired connection external network.LAN interface 111 and the first radio receiving transmitting module 15,
Second radio receiving transmitting module 16 is connected by a bridging functionality module, so can be achieved with the mutual of data.
The handheld terminal of wireless connections instructional terminal, connects also by described second radio receiving transmitting module 16 or LAN
Mouth 111, it is achieved with the connection of external network.
As a preferred embodiment of the present invention, described instructional terminal also includes being connected with described processor
, control and the startup/clock circuit 19 of clock alignment for starting, described startup/clock circuit 9 also with institute
State power module 18 to be connected.Described startup/clock circuit 19 may be used for: one is can to receive remote controller to send out
The control signal sent here, operates box；Two is that carry out clock with computer synchronization, and starts more newer command,
Box software version and built in video content is updated with timing.
As another preferred embodiment of the present invention, described instructional terminal also includes and described processor 11 phase
Even, for transmitting the Audio interface 110 of audio signal.Audio interface 110 is used for being connected to outside sound
Frequently equipment or the audio interface of display device, to realize the transmission of audio signal.
Referring to Fig. 2, the operation principle of the present invention is, the writing track data of electronic whiteboard passes through USB
Interface is transferred to instructional terminal, and instructional terminal is transferred to terminal unit by radio receiving transmitting module 5, and terminal sets
After data being depicted as track by mapping software, then send back to religion by screen content wireless base station apparatus
Learning terminal, instructional terminal is transferred to projector by HDMI, and projector projects electricity handwriting trace
On sub-blank, complete to show overlapping of track and hand-written movement locus.
Referring to Fig. 3, the signal of electronic whiteboard infrared sensor, by usb 14, wire transmission is given
The handwriting trace receiver module 13 of instructional terminal.Herein, usb 14 has two effects, one be to
Electronic whiteboard is powered, so electronic whiteboard avoids the need for socket power line separately；Two is the rail of electronic whiteboard
Mark data are transferred to instructional terminal.After instructional terminal receives track data, it is compressed coding, and encapsulates,
Then it is sent to terminal unit (such as main frame etc.) by the first radio receiving transmitting module 15.
After terminal unit beams back on-screen data stream, instructional terminal connects again by the first radio receiving transmitting module 15
Receive data, be then packaged protocol analysis, the decoding data after parsing, and carry out audio frequency and video separation.
The voice data separated gives audio driver, and video data is directly fed to HDMI driver,
Then projector is connected by HDMI.Projector is projected in data image on electronic whiteboard, describes
Go out to write movement locus.
Refer to the operation principle of Fig. 3, mobile terminal and instructional terminal as schemed:
Open the APP program of mobile terminal first by person (typically teacher), start campus broadcasting netter
Family end software (is installed on mobile terminals).Client connects the religion being arranged in classroom by WiFi signal
Learn terminal, after connection, just start the broadcast mode of instructional terminal.After broadcast mode starts, mobile terminal is sent out again
Go out capacity of equipment sign to instruct to instructional terminal, instructional terminal is denoted as multicast pattern receiving terminal；Indicate
Finishing, client sends the instruction of inquiry mandate again to instructional terminal.Instructional terminal connects equipment by LAN
Management server 1, and inquire about the grant column list of multicast server 2, see whether to allow the machine incoming multicast net
Network.So the purpose that inquiry authorizes, it is simply that select this instructional terminal to need the multicast server 2 connected.Only
Having No. ID of this instructional terminal in the grant column list of multicast server 2, this instructional terminal just can connect to this group
Broadcast server 2.After the authorization query of instructional terminal, client sends multicast request again to instructional terminal.This
Time, this instructional terminal just can connect this multicast server, and receive its audio, video data.So from
Above step is it can be seen that mobile terminal is only the operation equipment controlling instructional terminal, and itself does not locates
Manage any data.
Referring to Fig. 4, the workflow of campus broadcasting net is as follows: ask when the instructional terminal in Fig. 3 sends multicast
After asking and obtaining permission, just access some multicast network, and received and send from this multicast server 2
Media file.The media file received is separated into video flowing and audio stream in real time, and decodes respectively,
Then exported by video interface or audio interface.
The workflow of multicast server is: user's (typically principal or other multicast clothes of multicast server
Business device user) start multicast program, after startup, application program is denoted as multicast server this equipment at once,
And beacon information is uploaded to device management server.Indicate complete, the user of multicast server setting can
To access the receiving device list of this multicast network, i.e. authorize multicast list of devices.This list has set
After, it is fed to device management server 2 at once.The most a few step preparations are complete, and multicast pattern is activated,
Now there are two threads to run simultaneously.One thread obtains the sound connecting photographic head on computers with mike
Video data.Carry out audio/video coding after acquisition at once, and be media file audio & video file synthesis.
Another thread moment waits the device multicast request of instructional terminal.Upon receipt of multicast request, enter at once
The authentication of row request equipment, after authentication is passed through, then amendment multicast equipment list, shows this equipment
It is successfully accessed multicast network.
It is local that first the media file of synthesis can be stored in multicast server 2, namely local recorded broadcast.It addition,
Multicast server is always according to the scheduling of device management server 1, and timesharing is the media of multicast server 2 recorded broadcast
Files passe to device management server 1 as backup.The media file that recorded broadcast is got off, can be sent at once
To instructional terminal, it is achieved thereby that multicast services.
Additionally, device management server 1 can be a computer in LAN, its effect is as follows: one
It is the information indicating of every equipment in management network, for each equipment query；Two is for a certain group
Broadcast server, set up for it and authorize multicast list of devices, indicate the instructional terminal allowing to access；Three is to forward
The multicast request of box, dynamically distributes link, and is fitted to the multicast server of correspondence；Four is to multicast services
The recorded broadcast media file of device backs up.
The above is the preferred embodiment of the present invention, it is noted that for the common skill of the art
For art personnel, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, this
A little improvements and modifications are also considered as protection scope of the present invention.
Claims (7)
1. Campus Broadcasting System, it is characterised in that including:
Device management server；
Multicast server；
Organize instructional terminal more；
Described device management server, multicast server are connected by network with instructional terminal；
Each instructional terminal is all connected with local multimedia equipment, is wirelessly connected with handheld terminal simultaneously.
Campus Broadcasting System the most according to claim 1, it is characterised in that described instructional terminal includes:
Processor；
It is connected with described processor, for data cached memorizer；
It is connected with described processor, for receiving the handwriting trace receiver module of electronic whiteboard track data；
It is connected with described handwriting trace receiver module, for connecting the USB interface of electronic whiteboard；
For the first radio receiving transmitting module of handheld terminal described in wireless connections, the screen of handheld terminal data that both can send over wireless receiving, it is also possible to wireless transmission writing track data is to handheld terminal；
It is connected with described processor, for connecting the second radio receiving transmitting module of external network；
It is connected with described processor, for connecting the HDMI of exterior display device；
Connect described processor, the first radio receiving transmitting module and the power module of the second radio receiving transmitting module.
Campus Broadcasting System the most according to claim 1, it is characterised in that described handheld terminal includes but are not limited to be provided with electronic whiteboard mapping software computer, iPad and Android device with screen content wireless base station apparatus.
Campus Broadcasting System the most according to claim 1 or claim 2, it is characterised in that described instructional terminal also includes being connected with described processor, controls and the startup/clock circuit of clock alignment for starting, and described startup/clock circuit is also connected with described power module.
The most according to claim 1, Campus Broadcasting System, it is characterised in that described instructional terminal also includes being connected with described processor, for transmitting the Audio interface of audio signal.
Campus Broadcasting System the most according to claim 1, it is characterised in that described instructional terminal also includes the LAN interface being connected with described processor, for wired connection external network.
Campus Broadcasting System the most according to claim 5, it is characterised in that described LAN interface and the first radio receiving transmitting module, the second radio receiving transmitting module are connected by a bridging functionality module.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510661937 | 2015-10-14 | ||
| CN2015106619378 | 2015-10-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105871489A true CN105871489A (en) | 2016-08-17 |
| CN105871489B CN105871489B (en) | 2019-08-02 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610116769.9A Active CN105871489B (en) | 2015-10-14 | 2016-03-01 | Campus Broadcasting System |
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| CN (1) | CN105871489B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110913086A (en) * | 2019-11-22 | 2020-03-24 | 厦门神州鹰软件科技有限公司 | Campus remote calling system and method based on network sound box |
| CN113411150A (en) * | 2021-06-16 | 2021-09-17 | 世邦通信股份有限公司 | Method and system for managing multiple devices based on broadcast task |
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| Publication number | Publication date |
|---|---|
| CN105871489B (en) | 2019-08-02 |
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