CN103414880A - Processing method and system of synchronous classroom - Google Patents
Processing method and system of synchronous classroom Download PDFInfo
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- CN103414880A CN103414880A CN2013103525365A CN201310352536A CN103414880A CN 103414880 A CN103414880 A CN 103414880A CN 2013103525365 A CN2013103525365 A CN 2013103525365A CN 201310352536 A CN201310352536 A CN 201310352536A CN 103414880 A CN103414880 A CN 103414880A
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Abstract
The invention provides a processing method and system of a synchronous classroom. The processing method of the synchronous classroom comprises the following steps that (1) an image splicer of a main classroom forms combined video according to tracking video information obtained from a tracking camera of the main classroom and an image processing instruction received from a teaching client of the main classroom, and sends the combined video to the teaching client of the main classroom, wherein the types of teaching modes, and the teaching duration, the early-warning time and the switchover sequence corresponding to each teaching mode are set through the teaching client of the main classroom, and the teaching client of the main classroom informs the image splicer of the set information; (2) the image splicer starts the timing trigger function, informs the teaching client that the timed time is up, enables the teaching client of the main classroom to start the teaching mode corresponding to a first cis-position, and sends sound control strategy information, corresponding to the teaching mode, of the main classroom to the teaching client of the main classroom; (3) the image splicer provides switchover control for the corresponding teaching modes according to the corresponding teaching duration.
Description
Technical field
The invention belongs to network communication field, relate in particular to a kind of processing method and system of simultaneous classroom.
Background technology
Along with the penetration and promotion of the Internet, remote teaching has become a kind of common teaching method in today of information prosperity.Yet the function ratio in the classroom of the Web-based instruction at present is more single, although can realize teletransmission, poor for the online interaction of teaching, can't effectively improve the quality of teaching.
Summary of the invention
The invention provides a kind of processing method and system of simultaneous classroom, to address the above problem.
The invention provides a kind of processing method of simultaneous classroom.Said method comprises the following steps: the positioning shooting machine monitoring of main subject hall arrives the interior teacher of main subject hall and student's motion, and teacher and student's movable information is sent to the tracking main frame of main subject hall; The tracking main frame sending controling instruction of main subject hall is to the teaching client of tracking camera and the main subject hall of main subject hall; After the teaching client control command of main subject hall, according to current teaching pattern, determine the target video that needs output, and send the image processing instruction to the Image Mosaics device of main subject hall; The tracking video information that the Image Mosaics device of main subject hall obtains according to the tracking camera from the main subject hall reaches from the image processing instruction of the teaching client of main subject hall, forms the teaching client that composite video pushes to the main subject hall; The teaching client of main subject hall is sent to the audio/video information of current output by streaming media server the teaching client of subsidiary course hall.Wherein, by the teaching client of main subject hall, set kind, every kind of teaching duration, pre-warning time and transfer sequence that teaching pattern is corresponding of teaching pattern, the teaching client of main subject hall is by above-mentioned set information notice Image Mosaics device; The Image Mosaics device starts timing trigger function, when timing reaches, the teaching client of notice main subject hall is opened the teaching pattern that the first cis-position is corresponding and the Sound control policy information of main subject hall corresponding under this pattern is sent to the teaching client of main subject hall, simultaneously, the Image Mosaics device sends the teaching client of initiate notification message to the subsidiary course hall by teaching client and the streaming media server of main subject hall, wherein, initiate notification message is carried the Sound control policy information of subsidiary course hall corresponding under the teaching pattern information of teaching client of main subject hall and this pattern; The Image Mosaics device provides switching controls according to corresponding teaching duration for corresponding teaching pattern.
The present invention also provides a kind for the treatment of system of simultaneous classroom, comprises main subject hall system, subsidiary course hall system and streaming media server.Main subject hall system comprises the positioning shooting machine, follows the tracks of main frame, tracking camera, teaching client and Image Mosaics device, and subsidiary course hall system comprises the teaching client.The tracking main frame of main subject hall connects respectively positioning shooting machine, tracking camera and teaching client, the Image Mosaics device connects respectively teaching client and tracking camera, and the teaching client of main subject hall connects the teaching client of subsidiary course hall by streaming media server.The positioning shooting machine of main subject hall, be used to monitoring the motion of teacher and student in the main subject hall, and be sent to teacher and student's movable information in the tracking main frame of main subject hall.The tracking main frame of main subject hall, for the teaching client of sending controling instruction to tracking camera and the main subject hall of main subject hall.After the teaching client control command of main subject hall, for the teaching pattern according to current, determine the target video that needs output, and send the image processing instruction to the Image Mosaics device of main subject hall.The Image Mosaics device of main subject hall reaches from the image processing instruction of the teaching client of main subject hall according to the tracking video information that the tracking camera from the main subject hall obtains, and is used to form the teaching client that composite video pushes to the main subject hall.The teaching client of main subject hall, for being sent to the audio/video information of current output by streaming media server the teaching client of subsidiary course hall.Wherein, by the teaching client of main subject hall, set kind, every kind of teaching duration, pre-warning time and transfer sequence that teaching pattern is corresponding of teaching pattern, the teaching client of main subject hall is by above-mentioned set information notice Image Mosaics device; The Image Mosaics device starts timing trigger function, when timing reaches, the teaching client of notice main subject hall is opened the teaching pattern that the first cis-position is corresponding and the Sound control policy information of main subject hall corresponding under this pattern is sent to the teaching client of main subject hall, simultaneously, the Image Mosaics device sends the teaching client of initiate notification message to the subsidiary course hall by teaching client and the streaming media server of main subject hall, wherein, initiate notification message is carried the Sound control policy information of subsidiary course hall corresponding under the teaching pattern information of teaching client of main subject hall and this pattern; The Image Mosaics device provides switching controls according to corresponding teaching duration for corresponding teaching pattern.
Compared to prior art, according to processing method and the system of simultaneous classroom provided by the invention, realize that by the facilitating communications of main subject hall and subsidiary course hall online class is synchronous.In addition, by the teaching client of main subject hall, set the kind of teaching pattern, every kind of teaching duration that teaching pattern is corresponding, pre-warning time and transfer sequence, the teaching client of main subject hall is by above-mentioned set information notice Image Mosaics device, the Image Mosaics device starts timing trigger function, when timing reaches, the teaching client of notice main subject hall is opened the teaching pattern that the first cis-position is corresponding and the Sound control policy information of main subject hall corresponding under this pattern is sent to the teaching client of main subject hall, simultaneously, the Image Mosaics device sends the teaching client of initiate notification message to the subsidiary course hall by teaching client and the streaming media server of main subject hall, the Image Mosaics device provides switching controls according to corresponding teaching duration for corresponding teaching pattern.So, improved automation and the intellectuality in Network Synchronization classroom, thereby improved teacher's quality of instruction, the classroom that promotes the student is experienced.
The accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention the present invention does not form inappropriate limitation of the present invention for explaining.In the accompanying drawings:
Figure 1 shows that the flow chart of the processing method of the simultaneous classroom that preferred embodiment according to the present invention provides;
Figure 2 shows that the schematic diagram of the treatment system of the simultaneous classroom that preferred embodiment according to the present invention provides.
Embodiment
Hereinafter with reference to accompanying drawing, also describe in conjunction with the embodiments the present invention in detail.It should be noted that, in the situation that do not conflict, embodiment and the feature in embodiment in the application can combine mutually.
Figure 1 shows that the flow chart of the processing method of the simultaneous classroom that preferred embodiment according to the present invention provides.As shown in Figure 1, the processing method of the simultaneous classroom that provides of preferred embodiment of the present invention comprises step 101～105.
In step 101, the positioning shooting machine monitoring of main subject hall arrives the interior teacher of main subject hall and student's motion, and teacher and student's movable information is sent to the tracking main frame of main subject hall.In this, the positioning shooting machine of main subject hall comprises teacher's positioning shooting machine and orientation of student shooting.When teacher's positioning shooting machine monitoring of main subject hall is walked about in the teaching process to teacher's writing on the blackboard in the main subject hall or teacher, now teachers'action image information is sent to the teacher and follows the tracks of main frame; When the camera supervised student in the main subject hall of the orientation of student of main subject hall stood up or sits down, now student's dynamic image data was sent to the student trace main frame.In addition, the teacher follows the tracks of main frame and the student trace main frame can be merged into a tracking main frame.The present invention does not limit this.
In step 102, the tracking main frame sending controling instruction of described main subject hall is to the teaching client of tracking camera and the main subject hall of main subject hall.In this, the tracking camera of main subject hall comprises teacher's tracking camera and student trace video camera.The tracking main frame of main subject hall reaches the student's dynamic image data obtained from the orientation of student video camera according to the teachers'action image information of obtaining from teacher's positioning shooting machine, sending controling instruction is to the teaching client of teacher's tracking camera, student trace video camera and the main subject hall of main subject hall.Wherein, control command has been carried direction of motion information, motion amplitude information and signal source-information.So, teacher's tracking camera of main subject hall or student trace video camera can correspondingly be followed the tracks of teacher or student's motion and take after receiving the control command of following the tracks of the main frame transmission.
In step 103, after the described control command of teaching client of described main subject hall, according to current teaching pattern, determine the target video that needs output, and send the image processing instruction to the Image Mosaics device of main subject hall.Particularly, after the teaching client control command of main subject hall, in conjunction with self current field research pattern, which road video judgement exports as target video, and sends the image processing instruction to the Image Mosaics device of main subject hall.Wherein, the image processing instruction comprises and has carried target video output information.In this, the kind of teaching pattern comprises normal teaching pattern, sound resources mode, noiseless resources mode and interactive discussion pattern.Yet the present invention does not limit this.Wherein, under normal teaching pattern, the target video that needs output is for take the vision signal of student trace video camera of teacher's tracking camera, student trace video camera or subsidiary course hall of main subject hall as main; Under sound resources mode, needing the target video of output to take the VGA(Video Graphics Array of teaching client of main subject hall) signal is as main; Under noiseless resources mode, need the target video of output to take the VGA signal of teaching client of main subject hall as main; In the interactive discussion pattern, need the target video of output to take the vision signal of student trace video camera of the student trace video camera of main subject hall or subsidiary course hall as main.
In step 104, the tracking video information that the Image Mosaics device of described main subject hall obtains according to the tracking camera from the main subject hall reaches from the described image processing instruction of the teaching client of main subject hall, forms the teaching client that composite video pushes to described main subject hall.In this, the Image Mosaics device of main subject hall is according to the tracking video information of image processing instruction and teacher's tracking camera or student trace video camera, form the composite video under corresponding teaching pattern, and definite composite video is pushed to the teaching client of main subject hall.In this, the Image Mosaics device can, according to the difference of teaching pattern, splice the teaching client that main two auxiliary compound picture planes are pushed to the main subject hall as required.
In step 105, the teaching client of described main subject hall is sent to the audio/video information of current output by streaming media server the teaching client of subsidiary course hall.In this, the teaching client of main subject hall is sent to the audio/video information of current output the teaching client of subsidiary course hall by streaming media server, so, realizes that the main subject hall synchronizes with the information of subsidiary course hall.
In the present embodiment, by the teaching client of main subject hall, set kind, every kind of teaching duration, pre-warning time and transfer sequence that teaching pattern is corresponding of teaching pattern, the teaching client of main subject hall is by above-mentioned set information notice Image Mosaics device; The Image Mosaics device starts timing trigger function, when timing reaches, the teaching client of notice main subject hall is opened the teaching pattern that the first cis-position is corresponding and the Sound control policy information of main subject hall corresponding under this pattern is sent to the teaching client of main subject hall, simultaneously, the Image Mosaics device sends the teaching client of initiate notification message to the subsidiary course hall by teaching client and the streaming media server of main subject hall, wherein, initiate notification message is carried the Sound control policy information of subsidiary course hall corresponding under the teaching pattern information of teaching client of main subject hall and this pattern; The Image Mosaics device provides switching controls according to corresponding teaching duration for corresponding teaching pattern.
In addition, in the present embodiment, when the teaching duration of the corresponding teaching pattern of Image Mosaics device judgement arrived pre-warning time, the Image Mosaics device sent early warning information to the teaching client of main subject hall, and the teaching client of main subject hall is according to the early warning information display reminding information received.Wherein, described information comprises whether the residue teaching duration of corresponding teaching pattern and prompting teacher are ready to extend the teaching duration.
In addition, in the present embodiment, the different teaching modes correspondence arranges different Sound control strategies, when the teaching client of Image Mosaics device notice main subject hall is switched between different teaching modes, sends the teaching client that handovers messages to the main subject hall.Wherein, switching message has been carried the Sound control policy information of main subject hall corresponding to teaching pattern information, this pattern after switching.Simultaneously, the Image Mosaics device sends a notification message to the teaching client of subsidiary course hall by teaching client and the streaming media server of main subject hall.Wherein, notification message has carried the Sound control policy information of subsidiary course hall corresponding under the teaching pattern information after the switching, this pattern.So, the teaching client of the teaching client of main subject hall and subsidiary course hall can be adjusted Sound control according to the Sound control strategy received.
In the present embodiment, under normal teaching pattern, described Sound control strategy is: at the main subject hall, the teaching client call microphone voice acquisition module of main subject hall gathers microphone voice, and the input port of the teaching client of the audio signal of microphone access main subject hall, at the subsidiary course hall, the teaching client call microphone voice acquisition module of subsidiary course hall gathers microphone voice, and the input port of the teaching client of the audio signal of microphone access subsidiary course hall.Under sound resources mode, described Sound control strategy is: at the main subject hall, the teaching client call sound card sound collection module of main subject hall, microphone voice acquisition module, and the teaching client sound card output signal of main subject hall and the input signal of microphone are carried out to audio mixing, using the input signal of the audio signal after audio mixing as the sound card input port, at the subsidiary course hall, the teaching client call mic mute module of subsidiary course hall, carry out quiet processing, now, the student in the subsidiary course hall can't make a speech.Under noiseless resources mode, described Sound control strategy is: at the main subject hall, the teaching client call microphone voice acquisition module of main subject hall gathers microphone voice, and the input port of the audio signal of microphone access teaching client, at the subsidiary course hall, the teaching client call microphone voice acquisition module of subsidiary course hall gathers microphone voice, and the input port of the audio signal of microphone access teaching client.Under the interactive discussion pattern, described Sound control strategy is: at the main subject hall, the teaching client call microphone voice acquisition module of main subject hall gathers microphone voice, and the input port of the audio signal of microphone access teaching client, at the subsidiary course hall, the teaching client call microphone voice acquisition module of subsidiary course hall gathers microphone voice, and the input port of the audio signal of microphone access teaching client.
In this, if the teacher is as shown in table 1 in arranging of the teaching client of main subject hall, the following implementation procedure that describes the Network Synchronization classroom that the present embodiment provides according to table 1 in detail.
| Transfer sequence | Teaching pattern | The teaching duration | Pre-warning time |
| 1 | Normal teaching pattern | 20 minutes | Reach early warning in 18 minutes |
| 2 | Sound resources mode | 10 minutes | Reach early warning in 8 minutes |
| 3 | Noiseless resources mode | 10 minutes | Reach early warning in 8 minutes |
| 4 | The interactive discussion pattern | 5 minutes | Reach early warning in 3 minutes |
Table 1
The teaching of the teaching client that particularly, the teacher can be by the main subject hall arranges interface teaching pattern, teaching duration, pre-warning time and transfer sequence is set.The teaching client obtains set information as shown in table 1 according to arranging of teacher, and by described set information notice Image Mosaics device.In addition, the teacher (for example selectes timing, 10 minutes), the teaching client notice Image Mosaics device of main subject hall starts timing trigger function, when timing arrives, the teaching client of Image Mosaics device notice main subject hall is opened teaching pattern (as shown in table 1 is normal teaching pattern) corresponding to the first cis-position, and the Sound control policy information of main subject hall corresponding under this pattern is sent to the teaching client of main subject hall.Simultaneously, the Image Mosaics device sends the teaching client of initiate notification message to the subsidiary course hall by teaching client and the streaming media server of main subject hall, wherein, initiate notification message has been carried the Sound control policy information of the teaching pattern information (that is, normal teaching pattern information) of the teaching client of main subject hall and subsidiary course hall corresponding to this pattern.After the described information of teaching client of subsidiary course hall, it is normal teaching pattern that present mode is set, and determine that current Sound control strategy is: the teaching client call microphone voice acquisition module of subsidiary course hall gathers microphone voice, and the input port of the teaching client of the audio signal of microphone access subsidiary course hall.So, the teacher can normally start to attend class, and the subsidiary course hall can carry out interaction with the main subject hall.
Particularly, under normal teaching pattern, if teacher's writing on the blackboard or walk about in the teaching process, teacher's tracking camera of main subject hall is followed the tracks of teacher's motion, the teaching client of main subject hall sends the image processing instruction to the Image Mosaics device, the Image Mosaics device is according to the image obtained from teacher's tracking camera of main subject hall, splices with teacher's tracking camera to be output as main compound picture plane, and pushes to the teaching client of main subject hall.The teaching client of main subject hall is transmitted current audio/video information by streaming media server to the teaching client of subsidiary course hall.When if the student of main subject hall takes the floor, the orientation of student video camera of main subject hall can be sent to student's dynamic image data the tracking main frame of main subject hall, the tracking main frame of main subject hall according to the information sending controling instruction received to student trace video camera and teaching client.The teaching client of main subject hall determine to need the target video of output to take the information of student trace video camera as main, and sends the image processing instruction to the Image Mosaics device of main subject hall.Now, the student trace video camera of main subject hall carries out the feature tracking to the student, after the Image Mosaics device of main subject hall receives the image processing instruction, splices with the student trace video camera and is output as main compound picture plane, and push to the teaching client of main subject hall.The teaching client of main subject hall is transmitted current audio/video information by streaming media server to the teaching client of subsidiary course hall.If the student in the speech of main subject hall sits down, the orientation of student video camera of main subject hall is sent to student's dynamic image data in the tracking main frame of main subject hall, follow the tracks of main frame and resolve above-mentioned information, student trace video camera and teaching client sending controling instruction to the main subject hall, the student trace video camera of main subject hall is cancelled the feature tracking to the speech student, simultaneously, after the teaching client control command of main subject hall, identify and now do not have the student to make a speech, determine and take the signal of teacher's tracking camera for mainly exporting (if teacher's writing on the blackboard or walk about) in the teaching process, and send the image processing instruction to the Image Mosaics device.After the Image Mosaics device of main subject hall receives the image processing instruction, splice with teacher's tracking camera and be output as main compound picture plane, and push to the teaching client of main subject hall.The teaching client of main subject hall is transmitted current audio/video information by streaming media server to the teaching client of subsidiary course hall.In addition, under this pattern, the student of subsidiary course hall also can make a speech, and now, the teaching client of subsidiary course hall gathers the audio, video data of subsidiary course hall, by streaming media server, sends it to the teaching client of main subject hall.About the subsidiary course hall, obtain subsidiary course hall student's the mode of audio, video data of speech with the said process of main subject hall, therefore repeat no more in this.
In addition, when the Image Mosaics device judges that by timing teaching duration that the teaching client that draws the main subject hall is in normal teaching pattern reaches pre-warning time (when routine teaching duration as shown in table 1 reaches 18 minutes), the Image Mosaics device sends early warning information to the teaching client of main subject hall, the teaching client of main subject hall is according to the early warning information display reminding information received, the residue teaching duration (for example, residue is 2 minutes) of the normal teaching pattern of prompting teacher also points out the teacher whether to be ready to extend the teaching duration of normal teaching pattern.If the teacher selects to extend the teaching duration of normal teaching pattern, the teaching client of main subject hall arranges time expand according to teacher's selection, notifies simultaneously Image Mosaics to think highly of the timing to teaching duration corresponding to each teaching pattern in whole course newly is set.
When the Image Mosaics device, judge by timing the teaching duration that draws current normal teaching pattern reach setup times (20 minutes as shown in table 1) after or the teaching duration that extends (for example also reach, if time expand is 5 minutes, reach 25 minutes) time, the Image Mosaics device sends switching message to the teaching client of main subject hall, the teaching client of main subject hall switches to sound resources mode according to the switching message received by teaching pattern, wherein, switching message has been carried the Sound control policy information of main subject hall corresponding under sound resources mode information and this pattern.Simultaneously, the Image Mosaics device sends a notification message to the teaching client of subsidiary course hall by teaching client and the streaming media server of main subject hall, wherein, notification message has carried the Sound control policy information of sound resources mode information and subsidiary course hall corresponding to sound resources mode.After the described information of teaching client of subsidiary course hall, the switching present mode is sound resources mode, and adjustment Sound control strategy is: the teaching client call mic mute module of subsidiary course hall, carry out quiet processing, now, the student in the subsidiary course hall can't make a speech.
Under sound resources mode, the teaching client of main subject hall, according to the address of sound resource storage, is called sound resource and is play.Wherein, sound resource comprises MP4, sound electronic courseware etc.At the main subject hall, the Sound control strategy is: the teaching client call sound card sound collection module of main subject hall, microphone voice acquisition module, and the teaching client sound card output signal of main subject hall and the input signal of microphone are carried out to audio mixing, using the input signal of the audio signal after audio mixing as the sound card input port.Under this pattern, the teaching client of main subject hall is definite usings the VGA signal as main output signal, and sends the Image Mosaics device of image processing instruction to the main subject hall.The Image Mosaics device of main subject hall splices composite video, and pushes to the teaching client of main subject hall.The teaching client of main subject hall sends the teaching client of current audio/video information to the subsidiary course hall by streaming media server.
In addition, when the Image Mosaics device judges that by timing the teaching duration that draws sound resources mode reaches pre-warning time (when teaching duration as shown in table 1 reaches 8 minutes), the Image Mosaics device sends early warning information to the teaching client of main subject hall, and the teaching client of main subject hall is according to the early warning information display reminding information received.In this, the demonstration of information and operation are as described in normal teaching pattern, therefore repeat no more in this.
For example, when the Image Mosaics device judges that by timing the teaching duration that draws sound resources mode reaches setup times (10 minutes as shown in table 1) or the teaching duration that extends (also reaches, if time expand is 5 minutes, reach 15 minutes) time, the Image Mosaics device sends switching message to the teaching client of main subject hall, the teaching client of main subject hall switches to noiseless resources mode according to the switching message received by teaching pattern, wherein, switching message has been carried the Sound control policy information of main subject hall corresponding under noiseless resources mode information and this pattern.Simultaneously, the Image Mosaics device sends a notification message to the teaching client of subsidiary course hall by teaching client and the streaming media server of main subject hall, wherein, notification message has carried the Sound control policy information of noiseless resources mode information and subsidiary course hall corresponding to noiseless resources mode.After the above-mentioned information of teaching client of subsidiary course hall, the switching present mode is to noiseless resources mode, and adjustment Sound control strategy is: the teaching client call microphone voice acquisition module of subsidiary course hall gathers microphone voice, and the input port of the audio signal of microphone access teaching client.
Under noiseless resources mode, the teaching client of main subject hall is play according to the noiseless resource of call by location of noiseless resource storage.At the main subject hall, the Sound control strategy is: the teaching client call microphone voice acquisition module of main subject hall gathers microphone voice, and the input port of the audio signal of microphone access teaching client.Under this pattern, the teaching client of main subject hall is definite usings the VGA signal as main output signal, and sends the Image Mosaics device of image processing instruction to the main subject hall.The Image Mosaics device of main subject hall splices composite video, and pushes to the teaching client of main subject hall.The teaching client of main subject hall sends the teaching client of current audio/video information to the subsidiary course hall by streaming media server.
In addition, when the Image Mosaics device judges that by timing the teaching duration that draws noiseless resources mode reaches pre-warning time (when teaching duration as shown in table 1 reaches 8 minutes), the Image Mosaics device sends early warning information to the teaching client of main subject hall, and the teaching client of main subject hall is according to the early warning information display reminding information received.In this, the demonstration of information and operation are as described in normal teaching pattern, therefore repeat no more in this.
For example, when the Image Mosaics device judges that by timing the teaching duration that draws noiseless resources mode reaches setup times (10 minutes as shown in table 1) or the teaching duration that extends (also reaches, if time expand is 5 minutes, reach 15 minutes) time, the Image Mosaics device sends switching message to the teaching client of main subject hall, the teaching client of main subject hall switches to the interactive discussion pattern according to the switching message received by teaching pattern, wherein, switching message has been carried the Sound control policy information of main subject hall corresponding under interactive discussion pattern information and this pattern.Simultaneously, the Image Mosaics device sends a notification message to the teaching client of subsidiary course hall by teaching client and the streaming media server of main subject hall, wherein, notification message has carried the Sound control policy information of interactive discussion pattern information and subsidiary course hall corresponding to interactive discussion pattern.After the above-mentioned information of teaching client of subsidiary course hall, the switching present mode is to the interactive discussion pattern, and adjustment Sound control strategy is: the teaching client call microphone voice acquisition module of subsidiary course hall gathers microphone voice, and the input port of the audio signal of microphone access teaching client.
Under the interactive discussion pattern, the teaching client of main subject hall determine to need the target video of output to take the student trace video camera of main subject hall as main, and sends the Image Mosaics device of image processing instruction to the main subject hall.The Image Mosaics device is according to the image obtained from the student trace video camera of main subject hall, splices with the student trace video camera to be output as main compound picture plane, and pushes to the teaching client of main subject hall.The teaching client of main subject hall is transmitted current audio/video information by streaming media server to the teaching client of subsidiary course hall.
In addition, when the Image Mosaics device judges that by timing the teaching duration that draws the interactive discussion pattern reaches pre-warning time (when teaching duration as shown in table 1 reaches 5 minutes), the Image Mosaics device sends early warning information to the teaching client of main subject hall, and the teaching client of main subject hall is according to the early warning information display reminding information received.In this, the demonstration of information and operation are as described in normal teaching pattern, therefore repeat no more in this.It should be noted that, for example, when the Image Mosaics device judges that by timing the teaching duration that draws the interactive discussion pattern reaches setup times (5 minutes as shown in table 1) or the teaching duration that extends (also reaches, if time expand is 5 minutes, reach 10 minutes) time, the Image Mosaics device sends prompting message to the teaching client of main subject hall and the teaching client of subsidiary course hall respectively, and the teaching client of main subject hall and the teaching client of subsidiary course hall finish according to the whole curricula of prompting message prompting received respectively.
Figure 2 shows that the schematic diagram of the treatment system of the simultaneous classroom that preferred embodiment according to the present invention provides.As shown in Figure 2, the treatment system of the simultaneous classroom that provides of preferred embodiment of the present invention comprises main subject hall system 10, subsidiary course hall system 12 and streaming media server 11.Main subject hall system 10 comprises positioning shooting machine 100,101, tracking main frame 102, tracking camera 103,104, teaching client 105 and Image Mosaics device 106.Subsidiary course hall system 12 comprises teaching client 125.The tracking main frame 102 of main subject hall connects respectively positioning shooting machine 100,101, tracking camera 103,104 and teaching client 105, Image Mosaics device 106 connects respectively teaching client 105 and tracking camera 103,104, and the teaching client 105 of main subject hall connects the teaching client 125 of subsidiary course hall by streaming media server 11.
In the present embodiment, the positioning shooting machine 100,101 of main subject hall, be used to monitoring the motion of teacher and student in the main subject hall, and be sent to teacher and student's movable information in the tracking main frame 102 of main subject hall.The tracking main frame 105 of main subject hall, for sending controling instruction to the tracking camera 103,104 of main subject hall and the teaching client 105 of main subject hall.After the teaching client 105 of main subject hall receives control command, for the teaching pattern according to current, determine the target video that needs output, and send the image processing instruction to the Image Mosaics device 106 of main subject hall.The tracking video information that the Image Mosaics device 106 of main subject hall obtains according to the tracking camera 103,104 from the main subject hall reaches the image processing instruction received from the teaching client 105 of main subject hall, is used to form the teaching client 105 that composite video pushes to the main subject hall.The teaching client 105 of main subject hall, for being sent to the audio/video information of current output by streaming media server 11 the teaching client 125 of subsidiary course hall.Wherein, by the teaching client 105 of main subject hall, set kind, every kind of teaching duration, pre-warning time and transfer sequence that teaching pattern is corresponding of teaching pattern, the teaching client 105 of main subject hall is by above-mentioned set information notice Image Mosaics device 106.Image Mosaics device 106 starts timing trigger function, when timing reached, the teaching client 105 of notice main subject hall was opened the teaching pattern that the first cis-position is corresponding and the Sound control policy information of main subject hall corresponding under this pattern is sent to the teaching client 105 of main subject hall.Simultaneously, Image Mosaics device 106 sends the teaching client 125 of initiate notification message to the subsidiary course hall by teaching client 105 and the streaming media server 11 of main subject hall, wherein, initiate notification message is carried the Sound control policy information of subsidiary course hall corresponding under the teaching pattern information of teaching client of main subject hall and this pattern.Image Mosaics device 106 provides switching controls according to corresponding teaching duration for corresponding teaching pattern.
In the present embodiment, subsidiary course hall system 12 also comprises orientation of student video camera 121, student trace main frame 122, student trace video camera 124 and Image Mosaics device 126.Student trace main frame 122 connects respectively orientation of student video camera 121, student trace video camera 124 and teaching client 125, and Image Mosaics device 126 connects teaching client 125 and student trace video camera 124.Specific operation process about described system is described with above-mentioned method, therefore repeat no more in this.
In sum, the processing method of the simultaneous classroom that preferred embodiment provides according to the present invention and system, realize that by the facilitating communications of main subject hall and subsidiary course hall online class is synchronous.In addition, by the teaching client of main subject hall, set the kind of teaching pattern, every kind of teaching duration that teaching pattern is corresponding, pre-warning time and transfer sequence, the teaching client of main subject hall is by above-mentioned set information notice Image Mosaics device, the Image Mosaics device starts timing trigger function, when timing reaches, the teaching client of notice main subject hall is opened the teaching pattern that the first cis-position is corresponding and the Sound control policy information of main subject hall corresponding under this pattern is sent to the teaching client of main subject hall, simultaneously, the Image Mosaics device sends the teaching client of initiate notification message to the subsidiary course hall by teaching client and the streaming media server of main subject hall, the Image Mosaics device provides switching controls according to corresponding teaching duration for corresponding teaching pattern.So, improved automation and the intellectuality in Network Synchronization classroom, thereby improved teacher's quality of instruction, the classroom that promotes the student is experienced.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. the processing method of a simultaneous classroom, is characterized in that, comprises the following steps:
The positioning shooting machine monitoring of main subject hall arrives the interior teacher of main subject hall and student's motion, and teacher and student's movable information is sent to the tracking main frame of main subject hall;
The tracking main frame sending controling instruction of described main subject hall is to the teaching client of tracking camera and the main subject hall of main subject hall;
After the described control command of teaching client of described main subject hall, according to current teaching pattern, determine the target video that needs output, and send the image processing instruction to the Image Mosaics device of main subject hall;
The tracking video information that the Image Mosaics device of described main subject hall obtains according to the tracking camera from the main subject hall reaches from the described image processing instruction of the teaching client of main subject hall, forms the teaching client that composite video pushes to described main subject hall;
The teaching client of described main subject hall is sent to the audio/video information of current output by streaming media server the teaching client of subsidiary course hall,
Wherein, by the teaching client of described main subject hall, set kind, every kind of teaching duration, pre-warning time and transfer sequence that teaching pattern is corresponding of teaching pattern, the teaching client of described main subject hall is notified described Image Mosaics device by above-mentioned set information;
Described Image Mosaics device starts timing trigger function, when timing reaches, notify the teaching pattern corresponding to teaching client unlatching the first cis-position of described main subject hall also the Sound control policy information of main subject hall corresponding under this pattern to be sent to the teaching client of main subject hall, simultaneously, described Image Mosaics device sends the teaching client of initiate notification message to the subsidiary course hall by teaching client and the described streaming media server of described main subject hall, wherein, described initiate notification message is carried the Sound control policy information of subsidiary course hall corresponding under the teaching pattern information of teaching client of main subject hall and this pattern,
Described Image Mosaics device provides switching controls according to corresponding teaching duration for corresponding teaching pattern.
2. method according to claim 1, it is characterized in that, when the teaching duration of the corresponding teaching pattern of described Image Mosaics device judgement arrives pre-warning time, described Image Mosaics device sends early warning information to the teaching client of described main subject hall, and the teaching client of described main subject hall is according to the described early warning information display reminding information received.
3. method according to claim 2, is characterized in that, described information comprises whether the residue teaching duration of corresponding teaching pattern and prompting teacher are ready to extend the teaching duration.
4. method according to claim 1, it is characterized in that, the different teaching modes correspondence arranges different Sound control strategies, when described Image Mosaics device notifies the teaching client of described main subject hall to switch between different teaching modes, transmission handovers messages to the teaching client of described main subject hall, described switching message has been carried the teaching pattern information after the switching, the Sound control policy information of the main subject hall that the teaching pattern after switching is corresponding, simultaneously, teaching client and streaming media server by the main subject hall send a notification message to the teaching client of subsidiary course hall, described notification message has carried the teaching pattern information after the switching, the Sound control policy information of the subsidiary course hall that the teaching pattern after switching is corresponding,
The teaching client of described main subject hall completes teaching pattern switching and the adjustment of Sound control strategy according to described switching message, and the teaching client of described subsidiary course hall completes teaching pattern switching and the adjustment of Sound control strategy according to described notification message.
5. method according to claim 1, is characterized in that, the kind of described teaching pattern comprises normal teaching pattern, sound resources mode, noiseless resources mode and interactive discussion pattern.
6. method according to claim 5, it is characterized in that, under normal teaching pattern, described Sound control strategy is: at the main subject hall, the teaching client call microphone voice acquisition module of main subject hall gathers microphone voice, and the input port of the teaching client of the audio signal of microphone access main subject hall, at the subsidiary course hall, the teaching client call microphone voice acquisition module of subsidiary course hall gathers microphone voice, and the input port of the teaching client of the audio signal of microphone access subsidiary course hall;
Under sound resources mode, described Sound control strategy is: at the main subject hall, the teaching client call sound card sound collection module of main subject hall, microphone voice acquisition module, and the teaching client sound card output signal of main subject hall and the input signal of microphone are carried out to audio mixing, using the input signal of the audio signal after audio mixing as the sound card input port, at the subsidiary course hall, the teaching client call mic mute module of subsidiary course hall, carry out quiet processing, now, the student in the subsidiary course hall can't make a speech;
Under noiseless resources mode, described Sound control strategy is: at the main subject hall, the teaching client call microphone voice acquisition module of main subject hall gathers microphone voice, and the input port of the audio signal of microphone access teaching client, at the subsidiary course hall, the teaching client call microphone voice acquisition module of subsidiary course hall gathers microphone voice, and the input port of the audio signal of microphone access teaching client;
Under the interactive discussion pattern, described Sound control strategy is: at the main subject hall, the teaching client call microphone voice acquisition module of main subject hall gathers microphone voice, and the input port of the audio signal of microphone access teaching client, at the subsidiary course hall, the teaching client call microphone voice acquisition module of subsidiary course hall gathers microphone voice, and the input port of the audio signal of microphone access teaching client.
7. method according to claim 1, is characterized in that, the positioning shooting machine of described main subject hall comprises teacher's positioning shooting machine and orientation of student video camera, and the tracking camera of described main subject hall comprises teacher's tracking camera and student trace video camera.
8. method according to claim 1, is characterized in that, described control command is carried direction of motion information, motion amplitude information and signal source-information; Described image processing instruction has carried target video output information.
9. the treatment system of a simultaneous classroom, it is characterized in that, comprise main subject hall system, subsidiary course hall system and streaming media server, described main subject hall system comprises the positioning shooting machine, follow the tracks of main frame, tracking camera, teaching client and Image Mosaics device, described subsidiary course hall system comprises the teaching client, the tracking main frame of described main subject hall connects respectively described positioning shooting machine, tracking camera and teaching client, described Image Mosaics device connects respectively described teaching client and described tracking camera, the teaching client of described main subject hall connects the teaching client of described subsidiary course hall by described streaming media server,
The positioning shooting machine of described main subject hall, be used to monitoring the motion of teacher and student in the main subject hall, and be sent to teacher and student's movable information in the tracking main frame of main subject hall,
The tracking main frame of described main subject hall, for the teaching client of sending controling instruction to tracking camera and the main subject hall of main subject hall,
After the described control command of teaching client of described main subject hall, for the teaching pattern according to current, determine the target video that needs output, and send the image processing instruction to the Image Mosaics device of main subject hall,
The Image Mosaics device of described main subject hall reaches from the described image processing instruction of the teaching client of main subject hall according to the tracking video information that the tracking camera from the main subject hall obtains, and is used to form the teaching client that composite video pushes to described main subject hall,
The teaching client of described main subject hall, for by streaming media server, the audio/video information of current output being sent to the teaching client of subsidiary course hall,
Wherein, by the teaching client of described main subject hall, set kind, every kind of teaching duration, pre-warning time and transfer sequence that teaching pattern is corresponding of teaching pattern, the teaching client of described main subject hall is notified described Image Mosaics device by above-mentioned set information;
Described Image Mosaics device starts timing trigger function, when timing reaches, notify the teaching pattern corresponding to teaching client unlatching the first cis-position of described main subject hall also the Sound control policy information of main subject hall corresponding under this pattern to be sent to the teaching client of main subject hall, simultaneously, described Image Mosaics device sends the teaching client of initiate notification message to the subsidiary course hall by teaching client and the described streaming media server of described main subject hall, wherein, described initiate notification message is carried the Sound control policy information of subsidiary course hall corresponding under the teaching pattern information of teaching client of main subject hall and this pattern,
Described Image Mosaics device provides switching controls according to corresponding teaching duration for corresponding teaching pattern.
10. system according to claim 9, it is characterized in that, described subsidiary course hall system also comprises orientation of student video camera, student trace main frame, student trace video camera and Image Mosaics device, described student trace main frame connects respectively described orientation of student video camera, described student trace video camera and described teaching client, and described Image Mosaics device connects described teaching client and described student trace video camera.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103413472A (en) * | 2013-08-14 | 2013-11-27 | 苏州阔地网络科技有限公司 | Method and system for achieving network synchronous classroom |
| CN103413471A (en) * | 2013-08-14 | 2013-11-27 | 苏州阔地网络科技有限公司 | Method and system for controlling network synchronous classroom |
| CN104065924A (en) * | 2014-06-23 | 2014-09-24 | 苏州阔地网络科技有限公司 | On-line synchronization classroom intelligent tracking method and system |
| CN104243849A (en) * | 2014-09-02 | 2014-12-24 | 苏州阔地网络科技有限公司 | Online classroom directed broadcasting control method and system |
| CN104917999A (en) * | 2015-06-08 | 2015-09-16 | 深圳锐取信息技术股份有限公司 | Dual video stream directed broadcasting method and system |
| CN104994081A (en) * | 2015-02-10 | 2015-10-21 | 阔地教育科技有限公司 | Data flow control system, data flow control equipment and terminal |
| CN107886784A (en) * | 2017-12-21 | 2018-04-06 | 佛山市博育教学设备有限公司 | A kind of tutoring system based on VR glasses |
| CN110991909A (en) * | 2019-12-06 | 2020-04-10 | 广州三人行壹佰教育科技有限公司 | Teaching progress reminding method and device |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1545318A (en) * | 2003-11-14 | 2004-11-10 | 西安交通大学 | A method for implementing web teleeducation system |
| CN201255932Y (en) * | 2008-08-27 | 2009-06-10 | 南京高盛信息产业有限公司 | Full automatic intelligent teaching writing/playing system |
| CN101572023A (en) * | 2009-06-10 | 2009-11-04 | 上海卓越睿新数码科技有限公司 | Digital voice recording and broadcasting teaching system and control method thereof |
| US20100279266A1 (en) * | 2009-04-07 | 2010-11-04 | Kendall Laine | System and method for hybrid course instruction |
| CN102044175A (en) * | 2009-10-26 | 2011-05-04 | 赫斯默(上海)电子科技有限公司 | Digitalized teaching method and device for intelligent tracking shooting, recording and live broadcasting |
| CN202601002U (en) * | 2012-03-27 | 2012-12-12 | 浙江纳特智能网络工程有限公司 | A recording and playing system with manual and automatic operations |
| CN103164991A (en) * | 2013-03-01 | 2013-06-19 | 广州市信和电信发展有限公司 | Network interactive teaching and research application system |
| CN103414775A (en) * | 2013-08-14 | 2013-11-27 | 苏州阔地网络科技有限公司 | Method and system for achieving network synchronous classroom |
| CN103413471A (en) * | 2013-08-14 | 2013-11-27 | 苏州阔地网络科技有限公司 | Method and system for controlling network synchronous classroom |
| CN103413472A (en) * | 2013-08-14 | 2013-11-27 | 苏州阔地网络科技有限公司 | Method and system for achieving network synchronous classroom |
-
2013
- 2013-08-14 CN CN201310352536.5A patent/CN103414880B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1545318A (en) * | 2003-11-14 | 2004-11-10 | 西安交通大学 | A method for implementing web teleeducation system |
| CN201255932Y (en) * | 2008-08-27 | 2009-06-10 | 南京高盛信息产业有限公司 | Full automatic intelligent teaching writing/playing system |
| US20100279266A1 (en) * | 2009-04-07 | 2010-11-04 | Kendall Laine | System and method for hybrid course instruction |
| CN101572023A (en) * | 2009-06-10 | 2009-11-04 | 上海卓越睿新数码科技有限公司 | Digital voice recording and broadcasting teaching system and control method thereof |
| CN102044175A (en) * | 2009-10-26 | 2011-05-04 | 赫斯默(上海)电子科技有限公司 | Digitalized teaching method and device for intelligent tracking shooting, recording and live broadcasting |
| CN202601002U (en) * | 2012-03-27 | 2012-12-12 | 浙江纳特智能网络工程有限公司 | A recording and playing system with manual and automatic operations |
| CN103164991A (en) * | 2013-03-01 | 2013-06-19 | 广州市信和电信发展有限公司 | Network interactive teaching and research application system |
| CN103414775A (en) * | 2013-08-14 | 2013-11-27 | 苏州阔地网络科技有限公司 | Method and system for achieving network synchronous classroom |
| CN103413471A (en) * | 2013-08-14 | 2013-11-27 | 苏州阔地网络科技有限公司 | Method and system for controlling network synchronous classroom |
| CN103413472A (en) * | 2013-08-14 | 2013-11-27 | 苏州阔地网络科技有限公司 | Method and system for achieving network synchronous classroom |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103413472A (en) * | 2013-08-14 | 2013-11-27 | 苏州阔地网络科技有限公司 | Method and system for achieving network synchronous classroom |
| CN103413471A (en) * | 2013-08-14 | 2013-11-27 | 苏州阔地网络科技有限公司 | Method and system for controlling network synchronous classroom |
| CN103413472B (en) * | 2013-08-14 | 2015-05-27 | 苏州阔地网络科技有限公司 | Method and system for achieving network synchronous classroom |
| CN103413471B (en) * | 2013-08-14 | 2015-07-15 | 苏州阔地网络科技有限公司 | Method and system for controlling network synchronous classroom |
| CN104065924A (en) * | 2014-06-23 | 2014-09-24 | 苏州阔地网络科技有限公司 | On-line synchronization classroom intelligent tracking method and system |
| WO2015196514A1 (en) * | 2014-06-23 | 2015-12-30 | 苏州阔地网络科技有限公司 | Online synchronous class intelligent tracking method and system |
| CN104243849A (en) * | 2014-09-02 | 2014-12-24 | 苏州阔地网络科技有限公司 | Online classroom directed broadcasting control method and system |
| CN104994081A (en) * | 2015-02-10 | 2015-10-21 | 阔地教育科技有限公司 | Data flow control system, data flow control equipment and terminal |
| CN104917999A (en) * | 2015-06-08 | 2015-09-16 | 深圳锐取信息技术股份有限公司 | Dual video stream directed broadcasting method and system |
| CN107886784A (en) * | 2017-12-21 | 2018-04-06 | 佛山市博育教学设备有限公司 | A kind of tutoring system based on VR glasses |
| CN110991909A (en) * | 2019-12-06 | 2020-04-10 | 广州三人行壹佰教育科技有限公司 | Teaching progress reminding method and device |
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