CN105871489B - Campus Broadcasting System - Google Patents
Campus Broadcasting System Download PDFInfo
- Publication number
- CN105871489B CN105871489B CN201610116769.9A CN201610116769A CN105871489B CN 105871489 B CN105871489 B CN 105871489B CN 201610116769 A CN201610116769 A CN 201610116769A CN 105871489 B CN105871489 B CN 105871489B
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- Prior art keywords
- multicast
- instructional terminal
- terminal
- processor
- instructional
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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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Multimedia (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a kind of Campus Broadcasting Systems, including device management server；Multicast server；Multiple groups instructional terminal；The device management server, multicast server and instructional terminal are connected by network；Each instructional terminal is all connected with local multimedia equipment, while being wirelessly connected with handheld terminal.The present invention may be implemented for the audio/video information of specific multiast service device to be communicated to specific instructional terminal in a broadcast manner, and then the multimedia equipment by connecting is communicated to live teachers and students.
Description
Technical field
The present invention relates to a kind of broadcast systems, more particularly, to a kind of Campus Broadcasting System.
Background technique
In current teaching and other work and lifes for needing applying electronic blank, greatly using infrared
Data are sent to computer from electronic whiteboard by USB interface to incude motion track of the hand on electronic whiteboard by sensor；
Mapping software is installed inside computer, according to the data received, draws the motion track on blank of selling, and be shown in electricity
On brain screen；Computer screen content passes through the HDMI/VGA interface connecting line of computer again, is transferred to projector；The light of projector is thrown
It is mapped on electronic whiteboard, restores the motion profile sold.Since this process is the Millisecond time, human eye can not discover it and prolong
When, feel to be like hand while mobile, lines have just write on the same on electronic whiteboard.
The realization of the above process passes through Data Over Cable, this brings inconvenience to the connection of each equipment, while
It is untidy to will cause classroom or meeting room space.
In order to solve the above problem, it is proposed that a kind of instructional terminal, transmits the data of electronic whiteboard and computer, Yi Ji electricity
Wireless transmission is changed into the transmission of the data of brain and projector, can greatly facilitate connection, purifies classroom or meeting room space, letter
Change operation switching when projection.The connecting line that is implemented without of whole process is attached, and seems that the track of electronic whiteboard is flown to
Projector is the same, 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 only
A certain part thing and be directed to specific teachers and students, other teachers and students be not required to it is to be understood that；Meanwhile another thing needs to be communicated to separately again
Outer a group teachers and students.Due to existing one-to-many broadcast model, the demand not can solve, so can only have to take the second best, it is first wide
Something is broadcast, then broadcasts other something, many unrelated teachers and students had not only been interfered, but also can not cause related teachers and students'
Pay attention to, effect is bad.
Summary of the invention
To solve the deficiencies in the prior art, so that relevant issues are only communicated to related personnel, the invention proposes a kind of schools
Garden broadcast system solution, comprising:
Device management server；
Multicast server；
Multiple groups instructional terminal；
The device management server, multicast server and instructional terminal are connected by network；
Each instructional terminal is all connected with local multimedia equipment, while being wirelessly connected with handheld terminal.
Further, the instructional terminal, comprising:
Processor；
It is connected with the processor, for data cached memory；
It is connected with the processor, for receiving the handwriting trace receiving module of electronic whiteboard track data；
It is connected with the handwriting trace receiving module, for connecting the USB interface of electronic whiteboard；
For being wirelessly connected the first radio receiving transmitting module of the handheld terminal, the hand that can both have been sended over wireless receiving
Terminal screen data are held, writing track data can also be transmitted wirelessly to handheld terminal；
It is connected with the processor, for connecting the second radio receiving transmitting module of external network；
It is connected with the processor, for connecting the HDMI interface of exterior display device；
Connect the power module of the processor, the first radio receiving transmitting module and the second radio receiving transmitting module.
As an improvement of the above scheme, the handheld terminal includes but are not limited to be equipped with electronic whiteboard mapping software simultaneously
Computer, iPad and Android device with screen content wireless base station apparatus.
As an improvement of the above scheme, the instructional terminal further includes being connected with the processor, for starting control
With starting/clock circuit of clock alignment, the starting/clock circuit is also connected with the power module.
As an improvement of the above scheme, the instructional terminal further includes being connected with the processor, is used for transmission audio
The Audio interface of signal.
As an improvement of the above scheme, the instructional terminal further includes a LAN interface being connected with the processor, is used
In wired connection external network.
Further, the LAN interface and the first radio receiving transmitting module, the second radio receiving transmitting module pass through a bridge joint
Functional module is connected.
Compared with prior art, campus network disclosed by the invention may be implemented the audio-video of specific multiast service device
Information is communicated to specific instructional terminal in a broadcast manner, and then the multimedia equipment by connecting is communicated to live teachers and students.
The audio/video information of multicast server transmitting can be already existing audio-video document, be also possible to through camera, Mike
The audio, video data that wind acquires in real time.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one specific embodiment of campus broadcasting net of the present invention；
Fig. 2 is the structural schematic diagram of instructional terminal in Fig. 1；
Fig. 3 is the work flow diagram of handheld terminal and instructional terminal in the present invention；
Fig. 4 is campus broadcasting net work flow diagram of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Figure 1, Campus Broadcasting System of the present invention, comprising:
Device management server 1；
Multicast server 2；
Multiple groups instructional terminal；As shown in the figure, instructional terminal 1001-100n can represent installation and teach indoor religion in the first year
Terminal is learned, instructional terminal 2001-200n, which can be represented, is mounted on the indoor instructional terminal of second grade religion, and so on, campus is all
Classroom, the teaching such as teacher office, office space are mountable to have instructional terminal；
The device management server 1, multicast server 2 are connected with instructional terminal by network；
Each instructional terminal is all connected with local multimedia equipment, while being wirelessly connected with handheld terminal, sheet as shown in the figure
Ground multimedia equipment 10001-1000n can represent the multimedia equipment for being installed on a classroom, local multimedia equipment
20001-2000n representative is installed on sophomoric local multimedia equipment, and handheld terminal 11001-1n00n represents connection one grade
The handheld terminal of instructional terminal, the handheld terminal that 21001-2n00n is connected with second grade instructional terminal, the multimedia equipment packet
It includes such as projector, speaker, the equipment such as electronic whiteboard；
The wherein instructional terminal, as shown in Figure 2, comprising:
Processor 11；
It is connected with the processor 11, for data cached memory 12；
It is connected with the processor 11, for receiving the handwriting trace receiving module 13 of electronic whiteboard track data；
It is connected with the handwriting trace receiving module 13, for connecting the usb 14 of electronic whiteboard；
For being wirelessly connected the first radio receiving transmitting module 15 of the handheld terminal, can both be sended over wireless receiving
Screen of handheld terminal data can also transmit wirelessly writing track data to handheld terminal；
It is connected with the processor, for connecting the second radio receiving transmitting module 16 of external network；
It is connected with the processor, for connecting the HDMI interface 17 of exterior display device；
It further include a LAN interface being connected with the processor 11 as one embodiment of instructional terminal of the present invention
111, it is used for wired connection external network.LAN interface 111 and the first radio receiving transmitting module 15, the second radio receiving transmitting module 16 are logical
It crosses a bridging functionality module to be connected, can be achieved with the interaction of data in this way.It is wirelessly connected the handheld terminal of instructional terminal, may be used also
By second radio receiving transmitting module 16 or LAN interface 111, the connection with external network is realized.
As a preferred embodiment of the present invention, the instructional terminal further includes being connected with the processor, is used for
Starting/clock circuit 19 of starting control and clock alignment, the starting/clock circuit 9 are also connected with the power module 18.
Starting/the clock circuit 19 can be used for: first is that can receive the control signal that remote controler is sent, operate to box；
Second is that it is synchronous to carry out clock with computer, and start more newer command, periodically to update box software version and built in video content.
As another preferred embodiment of the invention, the instructional terminal further includes being connected with the processor 11,
It is used for transmission the Audio interface 110 of audio signal.Audio interface 110 is used to be connected to outer audio equipment or shows equipment
Audio interface, to realize the transmission of audio signal.
Fig. 2 is referred to, the working principle of the invention is that the writing track data of electronic whiteboard is transferred to by USB interface
Instructional terminal, instructional terminal are transferred to terminal device by radio receiving transmitting module 5, and terminal device draws data by mapping software
After track is made, then instructional terminal sent back to by screen content wireless base station apparatus, instructional terminal passes through HDMI interface and transmits
To projector, projector is projected handwriting trace on electronic whiteboard, and completion display track is overlapped with hand-written motion profile.
Fig. 3 is referred to, the signal of electronic whiteboard infrared sensor, by usb 14, wire transmission is to instructional terminal
Handwriting trace receiving module 13.Here, there are two effects for usb 14, first is that electron blank is powered, so electronic whiteboard
There is no need to separately socket power lines；Second is that the track data of electronic whiteboard is transferred to instructional terminal.Instructional terminal receives
After track data, compressed encoding is carried out, and encapsulate, terminal device is then sent to (as counted by the first radio receiving transmitting module 15
Calculate machine host etc.).
After terminal device sends back to screen data stream, instructional terminal equally passes through the first radio receiving transmitting module 15 and receives number
According to being then packaged protocol analysis, the data after parsing are decoded, and carry out audio-video separation.The audio separated
Data give audio driver, and video data is directly fed to HDMI interface driver, then connects projector by HDMI interface.
Projector is projected in data image on electronic whiteboard, depicts writing movements track.
Fig. 3 is referred to, the working principle such as figure of mobile terminal and instructional terminal:
The APP program of user (usually teacher) opening mobile terminal first, starts campus broadcasting net client software
(installation is on mobile terminals).Client is mounted on the indoor instructional terminal of religion by WiFi signal connection, just starts after connection
The broadcast mode of instructional terminal.After broadcast mode starting, mobile terminal issues capacity of equipment mark instruction to instructional terminal again,
Instructional terminal is denoted as multicast pattern receiving end；Mark finishes, and client issues the instruction of inquiry authorization to instructional terminal again.Religion
Terminal is learned by LAN connection device management server 1, and inquires the grant column list of multicast server 2, sees whether to allow
The machine incoming multicast network.So the purpose of inquiry authorization, the multicast server 2 for exactly selecting the instructional terminal to need to connect.
Only there is the ID number of the instructional terminal in the grant column list of multicast server 2, which just can connect to the multicast services
Device 2.After the authorization query of instructional terminal, client issues multicast request to instructional terminal again.At this point, the instructional terminal can
To connect the upper multicast server, and receive its audio, video data.So can be seen that mobile terminal only from above step
It is the operation equipment of a control instructional terminal, itself does not handle any data.
Fig. 4 is referred to, the workflow of campus broadcasting net is as follows: when the instructional terminal in Fig. 3 sends multicast request and obtains
After must allowing, some multicast network is just accessed, and receive the media file sent from the multicast server 2.It receives
Media file be separated into video flowing and audio stream in real time, and decode respectively, it is then defeated by video interface or audio interface
Out.
The workflow of multicast server are as follows: (usually principal or other multicast servers makes the user of multicast server
User) starting multicast program, the equipment is denoted as multicast server at once by application program after starting, and beacon information is uploaded
To device management server.Mark finishes, and is set by the receiving end that user's setting of multicast server can access the multicast network
Standby list, i.e. authorization multicast list of devices.After the completion of list setting, it is fed to device management server 2 at once.Several steps in front
Preparation finishes, and multicast pattern is activated, and runs simultaneously there are two thread at this time.One thread, which obtains, to be connected on computers
The audio, video data of camera and microphone.Audio/video coding is carried out after acquisition at once, and is audio & video file synthesis
Media file.Another thread moment waits the device multicast request of instructional terminal.Once receiving multicast request, carry out at once
The authentication for requesting equipment, after authentication passes through, then modifies multicast equipment list, shows that the equipment has been successfully accessed group
Broadcast network.
The media file of synthesis can be stored in multicast server 2 locally first, namely local recorded broadcast.In addition, multicast takes
Device be engaged in also according to the scheduling of device management server 1, the media file of 2 recorded broadcast of multicast server is uploaded to equipment management by timesharing
Server 1 is as backup.The media file that recorded broadcast is got off can be immediately transmitted to instructional terminal, to realize multicast services.
In addition, device management server 1 can be a computer in local area network, act on as follows: first is that management net
The information indicating of every equipment in network, for each equipment query；Second is that being awarded for a certain multicast server for its foundation
Multicast equipment list is weighed, indicates the instructional terminal for allowing to access；Third is that the multicast request of forwarding box, dynamically distributes link, and fit
It is fitted on corresponding multicast server；Fourth is that the recorded broadcast media file to multicast server backs up.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (6)
1. Campus Broadcasting System characterized by comprising
Device management server；
Multicast server；
Multiple groups instructional terminal；
The device management server, multicast server and instructional terminal are connected by network；
Each instructional terminal is all connected with local multimedia equipment, while being wirelessly connected with handheld terminal；Wherein, the hand-held end
The instructional terminal is denoted as multicast pattern receiving end for issuing capacity of equipment mark instruction to the instructional terminal by end；
Mark finishes, and the handheld terminal issues the instruction of inquiry authorization to the instructional terminal；
The device management server allows to connect for establishing authorization multicast list of devices to the multicast server with label
The instructional terminal entered；
The instructional terminal, for passing through device management server described in LAN connection to inquire awarding for the multicast server
Multicast equipment list is weighed, sees whether to allow the machine incoming multicast network, and send multicast request to the multicast server, institute
State instructional terminal include processor, for start control and clock alignment starting/clock circuit and power module, it is described to open
Dynamic/clock circuit is connected with the processor, is also connected with the power module；
The multicast server, a thread are used for according to the multicast request received, carry out authentication, body to request equipment
After part is verified, then multicast equipment list is modified, and the instructional terminal is allowed to access the multicast network；Another thread
For obtaining the audio, video data of the camera and microphone that are connected to the instructional terminal, audio/video coding is carried out after acquisition,
And audio & video file synthesis be media file.
2. Campus Broadcasting System according to claim 1, which is characterized in that the instructional terminal further include:
It is connected with the processor, for data cached memory；
It is connected with the processor, for receiving the handwriting trace receiving module of electronic whiteboard track data；
It is connected with the handwriting trace receiving module, for connecting the USB interface of electronic whiteboard；
For being wirelessly connected the first radio receiving transmitting module of the handheld terminal, the hand-held end that can both have been sended over wireless receiving
Screen data is held, writing track data can also be transmitted wirelessly to handheld terminal；
It is connected with the processor, for connecting the second radio receiving transmitting module of external network；
It is connected with the processor, for connecting the HDMI interface of exterior display device；
Connect the power module of the processor, the first radio receiving transmitting module and the second radio receiving transmitting module.
3. Campus Broadcasting System according to claim 1, which is characterized in that the handheld terminal includes being equipped with electronic whiteboard
Mapping software and computer, iPad and the Android device for having screen content wireless base station apparatus.
4. Campus Broadcasting System according to claim 2, which is characterized in that the instructional terminal further includes and the processor
Connected, it is used for transmission the Audio interface of audio signal.
5. Campus Broadcasting System according to claim 2, which is characterized in that the instructional terminal further includes and the processor
A connected LAN interface is used for wired connection external network.
6. Campus Broadcasting System according to claim 5, which is characterized in that the LAN interface and the first radio receiving transmitting module,
Second radio receiving transmitting module is connected by a bridging functionality module.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2015106619378 | 2015-10-14 | ||
| CN201510661937 | 2015-10-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105871489A CN105871489A (en) | 2016-08-17 |
| CN105871489B true CN105871489B (en) | 2019-08-02 |
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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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| Country | Link |
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| CN (1) | CN105871489B (en) |
Families Citing this family (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 |
| CN113411150B (en) * | 2021-06-16 | 2022-08-30 | 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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| CN1969572A (en) * | 2004-06-16 | 2007-05-23 | Lg电子株式会社 | Broadcast/multicast service method based on user location information |
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| CN105871489A (en) | 2016-08-17 |
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