CN112185196A - Teaching auxiliary system based on cloud computing - Google Patents
Teaching auxiliary system based on cloud computing Download PDFInfo
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- CN112185196A CN112185196A CN201910597696.3A CN201910597696A CN112185196A CN 112185196 A CN112185196 A CN 112185196A CN 201910597696 A CN201910597696 A CN 201910597696A CN 112185196 A CN112185196 A CN 112185196A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B5/00—Electrically-operated educational appliances
- G09B5/08—Electrically-operated educational appliances providing for individual presentation of information to a plurality of student stations
- G09B5/14—Electrically-operated educational appliances providing for individual presentation of information to a plurality of student stations with provision for individual teacher-student communication
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B5/00—Electrically-operated educational appliances
- G09B5/06—Electrically-operated educational appliances with both visual and audible presentation of the material to be studied
- G09B5/065—Combinations of audio and video presentations, e.g. videotapes, videodiscs, television systems
Abstract
The invention discloses a teaching auxiliary system based on cloud computing, which comprises a teacher end, a student end and a cloud server end, wherein the teacher end is connected with the student end; the teacher end comprises a first login module, an image acquisition module, an instruction acquisition module, a courseware selection module, a first communication module and a first display module; the cloud server side comprises a courseware storage module, a courseware playing module, a streaming distribution module and an instruction conversion module. The student terminal comprises a second login module, a second display module, an input module, an instruction execution module and a second communication module. Through sending different teaching instructions, the matching instruction conversion module converts the different control instructions into different control instructions, and limits the streaming authority and the input authority of the second display module of the student end, so that the control requirements of different teaching stages on the student end are met, and the purposes of improving the teaching effect and improving the post-class utilization rate of equipment are achieved.
Description
Technical Field
The invention relates to the field of teaching equipment, in particular to a teaching auxiliary system based on cloud computing.
Background
The network teaching is a teaching mode which realizes teaching targets by applying multimedia and network technology under the guidance of certain teaching theory and thought and through multi-edge and multi-direction interaction of teachers, students, media and the like and collection, transmission, processing and sharing of teaching information of various media. The computer through the connecting network is usually in the current network teaching, the teaching video with teacher's end is sent to student's end, student's end learns through watching the video, but this method can't be convenient make mr and student communicate, can't supervise student's end simultaneously, when watching the video, the controlgear that the student can be free, can't listen to class with great concentration, lead to the teaching effect relatively poor, simultaneously because dedicated remote teaching equipment function is less, can't further utilize after the teaching, lead to the utilization ratio of the postclass of equipment lower.
Patent document CN107067850A describes a remote teaching interactive communication system, which is provided with a snapshot and screen capture tool for making notes, a selection tool for making marks, and a character and photo editing tool for making marks; the interactive communication system for remote teaching comprises a server, a student end, a teacher end, a classroom and the Internet; students log in a server through a computer or a mobile terminal through the Internet, remotely adjust a video camera (or a camera) and voice by using a set control platform, and remotely listen to the voice of a teacher in class and watch real-time video and blackboard-writing of the teacher in class. The teacher and the student carry out long-range real-time or non-real-time interactive communication through the three kinds of modes of the photo, the pronunciation and the video of taking the mark, make remote teaching can realize that the scientific application teaches, the target of the dignity, reach the teaching effect that the teacher and the student are face-to-face, one-to-one. The problem that mr and student communicate can be solved to a certain extent, but remote teaching student is in large quantity, can lead to exchanging uncontrolled, if ask frequently, influences teaching order and course progress.
Disclosure of Invention
In order to solve the above technical problems, an object of the present invention is to provide a teaching assistance system based on cloud computing, which is configured to send different teaching instructions, convert the instruction into different control instructions in cooperation with an instruction conversion module, and limit the streaming permission and the input permission of a second display module of a student end, so as to meet the control requirements of different teaching stages on the student end.
The technical problem to be solved by the invention is as follows:
A. how to improve the teaching effect of different stages of remote teaching.
B. How to improve the utilization ratio of equipment after teaching.
The purpose of the invention can be realized by the following technical scheme:
a teaching auxiliary system based on cloud computing comprises a teacher end, a student end and a cloud server end;
the teacher end comprises a first login module, an image acquisition module, an instruction acquisition module, a courseware selection module, a first communication module and a first display module;
the first login module logs in a teacher account of the cloud server through the input teacher account number and acquires teaching data of a logged-in teacher, wherein the teaching data comprises an associated student account table, a teaching log, subject data and class data;
the image acquisition module is used for acquiring image data of a teacher in class and pushing the image data to the cloud server; the image data comprises video and audio;
the instruction acquisition module is used for acquiring teaching instructions input by a teacher and sending the teaching instructions to the cloud server side, wherein the teaching instructions comprise lesson taking instructions, discussion instructions and lesson leaving instructions;
the courseware selection module is used for screening corresponding courseware from the cloud server side according to the subject data and the class data, generating a courseware list and displaying the courseware list on the first display module; if the subject data is mathematics and the class data is seven-year class 1, the mathematical courseware of seven-year class is screened out from the courseware storage module, a courseware table is generated according to the screened courseware, and the teacher sends a playing request to the cloud server side after selecting one courseware.
The first display module is used for displaying the video stream acquired from the cloud server; the first communication module is used for data transmission between the teacher end and the cloud server end;
the cloud server side comprises a courseware storage module, a courseware playing module, a streaming distribution module and an instruction conversion module;
the courseware storage module is used for storing courseware of all subjects, and the courseware comprises video courseware, picture courseware and document courseware; the image data is temporarily stored;
the courseware playing module is used for acquiring and playing corresponding courseware from the courseware storage module after receiving a lesson instruction and the teacher selects the played courseware, and generating a video stream; the system is also used for acquiring input data from all student terminals corresponding to the associated student account table after receiving the discussion instruction, extracting text data from the input data and generating a text stream according to the time sequence;
the streaming distribution module is used for pushing the generated video stream and the text stream to a teacher end and pushing the generated text stream, the generated video stream and the generated image data to a student end corresponding to the associated student account table;
the instruction conversion module is used for receiving a teaching instruction sent by a teacher end, converting the teaching instruction into a control instruction of a student end and sending the control instruction to the student end, wherein the control instruction comprises a first control instruction, a second control instruction and a third control instruction; the specific method for converting the teaching instruction into the control instruction of the student end is as follows:
s1, if receiving the instruction, generating a first control instruction with the content of the input right of off and the streaming right of on;
s2, if the discussion instruction is received, generating a second control instruction with the content of the input authority and the streaming authority both being on;
s3, if receiving the instruction of leaving lesson, generating a third control instruction with the contents of off streaming authority and on input authority;
the student terminal comprises a second login module, a second display module, an input module, an instruction execution module and a second communication module;
the second login module is used for logging in a student account in the cloud server side according to the student account number input by the student;
the second display module is used for displaying the text stream, the video stream and the image data acquired from the cloud server;
the input module is used for acquiring input data of a student end;
the instruction execution module is used for executing the control instruction after receiving the control instruction; the instruction execution module specifically executes the following steps:
SS1, streaming video stream and image data in the cloud server end to the second display module in real time when receiving the first control instruction, and simultaneously, enabling the student end not to collect input data of the input module;
SS2, when receiving a second control instruction, the student end starts to collect input data of the input module, and pushes text streams and image data in the cloud server end to the second display module;
SS3, when receiving a third control instruction, the student end starts to collect input data of the input module; meanwhile, the second display module stops receiving the text stream, the video stream and the image data from the cloud server;
the second communication module is used for data transmission between the student end and the cloud server end.
Further, the specific steps of transmitting text streams, video streams, image data, teaching instructions and control instructions among the teacher end, the student end and the cloud server end are as follows:
step one, after logging in a teacher account, a courseware selection module screens out all corresponding courseware from a courseware storage module in a cloud server terminal according to subject data and class data, a streaming distribution module connects a teacher terminal and corresponding student terminals to the same teaching group in the cloud server terminal according to an associated student account table, a lesson instruction is input through an instruction acquisition module, the instruction conversion module converts the lesson instruction into a first control instruction after receiving the lesson instruction, after the instruction execution module executes the first control instruction, the courseware is selected through a courseware selection module, a courseware playing module generates corresponding video stream, the image acquisition module starts to acquire and transmit the image data to the courseware storage module for storage, the streaming distribution module transmits the video stream to the teacher terminal corresponding to the teacher account in real time, and displays the video stream through a first display module, simultaneously transmitting the video stream and the image data to a student end in the same teaching group as the teacher end in real time, and displaying the video stream and the image data through a second display module;
step two, after a discussion instruction is input, an instruction conversion module converts the discussion instruction into a second control instruction after receiving the discussion instruction, an instruction execution module executes the second control instruction, an input module collects input data and sends the input data to a cloud server end, a courseware playing module generates a text stream according to the input data, a streaming distribution module pushes the text stream to a teacher end in real time, the text stream and image data are displayed through a first display module, and meanwhile the text stream and image data are pushed to a student end in real time and are displayed through a second display module;
and step three, after a class instruction is input, the instruction conversion module converts the discussion instruction into a third control instruction after receiving the discussion instruction, the instruction execution module continues to acquire input data, the courseware playing module stops generating video streams and text streams, and the image acquisition module stops acquiring image data.
The invention has the beneficial effects that:
(1) through giving the instruction of giving lessons, the conversion of instruction conversion module and the execution of instruction execution module are with student's second display module connection cloud server end to realize the streaming, still cut off student's end and input module's communication, realize restricting the student and use input device control student end, prevent that the student from doing other things, can be better be absorbed in class.
(2) When courseware is played in series flow, the image data of the teacher end are collected, and the image data are transmitted to the student end in real time, so that students can conveniently learn by matching with blackboard writing or explanation of the teacher in the image data while watching the courseware, and the learning effect is improved.
(3) After the class finishes, the instruction execution module executes a second control instruction by sending out the discussion instruction, the input module is communicated with the student end again, the transmission of the image data is kept, the courseware playing module generates a text stream according to the input data and transmits the text stream to the teacher end and the student end, so that the teacher and the student can see real-time discussion contents, and the teacher can answer the questions in the text stream through the image data. The teacher can communicate with the students in real time, and the teaching effect is improved.
(4) After the instruction for leaving class is input, the instruction conversion module converts the discussion instruction into a third control instruction after receiving the discussion instruction, the instruction execution module continues to collect input data, the courseware playing module stops generating video streams and text streams, and the image collection module stops collecting image data. The student end is convenient for students to use after class, and the utilization rate of the equipment is improved.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a system block diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present embodiment provides a teaching assistance system based on cloud computing, including a teacher end, a student end, and a cloud server end;
the teacher end adopts a PC, a smart phone or a tablet personal computer and other equipment, and comprises a first login module, an image acquisition module, an instruction acquisition module, a courseware selection module, a first communication module and a first display module;
the first login module logs in a teacher account of the cloud server through the input teacher account number and acquires teaching data of a logged-in teacher, wherein the teaching data comprises an associated student account table, a teaching log, subject data and class data; each teacher corresponds to one teacher account, a plurality of student accounts are associated in an associated student table in each teacher account, the subject data is a subject taught by the teacher, the class data is class information and class information of students in the associated student table, and the teaching log is a teaching schedule.
The image acquisition module is used for acquiring image data of a teacher in class and pushing the image data to the cloud server; the image data comprises video and audio; the image acquisition module can adopt a high-definition network camera to acquire a camera image or an acquisition card to cooperate with input equipment to acquire the image and the audio of a teacher end.
The instruction acquisition module is used for acquiring teaching instructions input by a teacher and sending the teaching instructions to the cloud server side, wherein the teaching instructions comprise lesson taking instructions, discussion instructions and lesson leaving instructions; after the teacher logs in the account, the first display module can display selection buttons for class taking, discussion taking and class leaving, the selection buttons correspond to the three teaching instructions respectively, and the teaching instructions can be sent by pressing the buttons.
The courseware selection module is used for screening corresponding courseware from the cloud server side according to the subject data and the class data, generating a courseware list and displaying the courseware list on the first display module, if a teacher logs in an account, the corresponding subject is math, the first display module can display buttons of all corresponding courseware in the class, and the courseware can be played by clicking.
The first display module is used for displaying the video stream acquired from the cloud server; the first communication module is used for data transmission between the teacher end and the cloud server end;
the cloud server side comprises a courseware storage module, a courseware playing module, a streaming distribution module and an instruction conversion module;
the courseware storage module is used for storing courseware of all subjects, and the courseware comprises video courseware, picture courseware and document courseware; the image data is temporarily stored;
the courseware playing module is used for acquiring and playing corresponding courseware from the courseware storage module after receiving a lesson instruction and the teacher selects the played courseware, and generating a video stream; the system is also used for acquiring input data from all student terminals corresponding to the associated student account table after receiving the discussion instruction, extracting text data from the input data and generating a text stream according to the time sequence;
the courseware playing module can play the corresponding courseware by calling a video player, a picture browser and a document editor in the cloud server terminal.
The streaming distribution module is used for pushing the generated video stream and the text stream to a teacher end and pushing the generated text stream, the generated video stream and the generated image data to a student end corresponding to the associated student account table;
the instruction conversion module is used for receiving a teaching instruction sent by a teacher end, converting the teaching instruction into a control instruction of a student end and sending the control instruction to the student end, wherein the control instruction comprises a first control instruction, a second control instruction and a third control instruction; the specific method for converting the teaching instruction into the control instruction of the student end is as follows:
s1, if receiving the instruction, generating a first control instruction with the content of the input right of off and the streaming right of on; when in class, the students are limited to use the input equipment to control the student terminals by setting the permission, so that the students are prevented from doing other things.
S2, if the discussion instruction is received, generating a second control instruction with the content of the input authority and the streaming authority both being on; during discussion, all students can communicate with the teacher through inputting characters, and the teacher can conveniently answer the questions of the students.
S3, if receiving the instruction of leaving lesson, generating a third control instruction with the contents of off streaming authority and on input authority; after class, the second display module stops streaming data and restores the input authority, so that students can use the student terminal conveniently after class.
The input authority is off, namely the input equipment can not input, and the input authority is on, namely the input equipment can input, wherein the input equipment comprises a keyboard, a mouse, a touch screen and the like. The streaming permission switch is that the second display module does not acquire data from the cloud server, and the streaming permission switch is that the second display module acquires data.
The student terminal comprises a second login module, a second display module, an input module, an instruction execution module and a second communication module;
the second login module is used for logging in a student account in the cloud server side according to the student account number input by the student; the identity of the student is recognized.
The second display module is used for displaying the text stream, the video stream and the image data acquired from the cloud server; a display device having an audio output function is employed.
The input module is used for acquiring input data of a student end, wherein the input data comprises data such as pictures and characters input through a mouse, a keyboard or a touch screen;
the instruction execution module is used for executing the control instruction after receiving the control instruction; the instruction execution module specifically executes the following steps:
SS1, streaming video stream and image data in the cloud server end to the second display module in real time when receiving the first control instruction, and simultaneously, enabling the student end not to collect input data of the input module;
SS2, when receiving a second control instruction, the student end starts to collect input data of the input module, and pushes text streams and image data in the cloud server end to the second display module;
SS3, when receiving a third control instruction, the student end starts to collect input data of the input module; meanwhile, the second display module stops receiving the text stream, the video stream and the image data from the cloud server;
the second communication module is used for data transmission between the student end and the cloud server end.
The method comprises the following specific steps of transmitting text streams, video streams, image data, teaching instructions and control instructions among a teacher end, a student end and a cloud server end:
step one, after logging in a teacher account, a courseware selection module screens out all corresponding courseware from a courseware storage module in a cloud server terminal according to subject data and class data, a streaming distribution module connects a teacher terminal and corresponding student terminals to the same teaching group in the cloud server terminal according to an associated student account table, a lesson instruction is input through an instruction acquisition module, the instruction conversion module converts the lesson instruction into a first control instruction after receiving the lesson instruction, after the instruction execution module executes the first control instruction, the courseware is selected through a courseware selection module, a courseware playing module generates corresponding video stream, the image acquisition module starts to acquire and transmit the image data to the courseware storage module for storage, the streaming distribution module transmits the video stream to the teacher terminal corresponding to the teacher account in real time, and displays the video stream through a first display module, simultaneously transmitting the video stream and the image data to a student end in the same teaching group as the teacher end in real time, and displaying the video stream and the image data through a second display module;
step two, after a discussion instruction is input, an instruction conversion module converts the discussion instruction into a second control instruction after receiving the discussion instruction, an instruction execution module executes the second control instruction, an input module collects input data and sends the input data to a cloud server end, a courseware playing module generates a text stream according to the input data, a streaming distribution module pushes the text stream to a teacher end in real time, the text stream and image data are displayed through a first display module, and meanwhile the text stream and image data are pushed to a student end in real time and are displayed through a second display module;
and step three, after a class instruction is input, the instruction conversion module converts the discussion instruction into a third control instruction after receiving the discussion instruction, the instruction execution module continues to acquire input data, the courseware playing module stops generating video streams and text streams, and the image acquisition module stops acquiring image data.
The specific working process of this embodiment is as follows:
1) after a teacher logs in own teacher account by using the teacher end, a corresponding teaching instruction is selected and sent to the cloud server end, after the instruction for class is given, the instruction conversion module generates a first control instruction according to the teaching instruction, the instruction execution module executes the first control instruction, the second display module of the student end is connected with the cloud server end, the communication between the student end and the input module is also cut off, the student is limited to use the input equipment to control the student end, the student is prevented from doing other things, and the student can better concentrate on class, meanwhile, the image data of the teacher end is collected, the cloud server end plays corresponding courseware according to courseware selected by the teacher and generates video streams to be streamed to the teacher end and the student end, and the image data is transmitted to the student end in real time, so that the student can conveniently learn by matching with the blackboard writing or explanation of a teacher in the image data while watching courseware, and the learning effect is improved.
2) According to the selection of a teacher, the instruction acquisition module sends out a discussion instruction, and the purpose is to enable the teacher to communicate with students in real time and answer the questions of the students, so that the instruction conversion module generates a second control instruction according to the teaching instruction, the instruction execution module executes the second control instruction, the input module is communicated with the student end again, the input data can be transmitted to the cloud server end, meanwhile, the transmission of image data is kept, the courseware playing module generates a text stream according to the input data and then transmits the text stream back to the teacher end and the student end, and the teacher and the students can see real-time discussion contents, so that the teacher can answer the questions in the text stream through the image data.
3) After the instruction for leaving class is input, the instruction conversion module converts the discussion instruction into a third control instruction after receiving the discussion instruction, the instruction execution module continues to collect input data, the courseware playing module stops generating video streams and text streams, and the image collection module stops collecting image data. The student end is convenient for students to use after class, and the students can log in the account of the students to search corresponding courseware for learning after class, thereby improving the utilization rate of the equipment.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.
Claims (2)
1. A teaching auxiliary system based on cloud computing is characterized by comprising a teacher end, a student end and a cloud server end;
the teacher end comprises a first login module, an image acquisition module, an instruction acquisition module, a courseware selection module, a first communication module and a first display module;
the first login module logs in a teacher account of the cloud server through the input teacher account number and acquires teaching data of a logged-in teacher, wherein the teaching data comprises an associated student account table, a teaching log, subject data and class data;
the image acquisition module is used for acquiring image data of a teacher in class and pushing the image data to the cloud server; the image data comprises video and audio;
the instruction acquisition module is used for acquiring teaching instructions input by a teacher and sending the teaching instructions to the cloud server side, wherein the teaching instructions comprise lesson taking instructions, discussion instructions and lesson leaving instructions;
the courseware selection module is used for screening corresponding courseware from the cloud server side according to the subject data and the class data, generating a courseware list and displaying the courseware list on the first display module;
the first display module is used for displaying the video stream acquired from the cloud server; the first communication module is used for data transmission between the teacher end and the cloud server end;
the cloud server side comprises a courseware storage module, a courseware playing module, a streaming distribution module and an instruction conversion module;
the courseware storage module is used for storing courseware of all subjects, and the courseware comprises video courseware, picture courseware and document courseware; the image data is temporarily stored;
the courseware playing module is used for acquiring and playing corresponding courseware from the courseware storage module after receiving a lesson instruction and the teacher selects the played courseware, and generating a video stream; the system is also used for acquiring input data from all student terminals corresponding to the associated student account table after receiving the discussion instruction, extracting text data from the input data and generating a text stream according to the time sequence;
the streaming distribution module is used for pushing the generated video stream and the text stream to a teacher end and pushing the generated text stream, the generated video stream and the generated image data to a student end corresponding to the associated student account table;
the instruction conversion module is used for receiving a teaching instruction sent by a teacher end, converting the teaching instruction into a control instruction of a student end and sending the control instruction to the student end, wherein the control instruction comprises a first control instruction, a second control instruction and a third control instruction; the specific method for converting the teaching instruction into the control instruction of the student end is as follows:
s1, if receiving the instruction, generating a first control instruction with the content of the input right of off and the streaming right of on;
s2, if the discussion instruction is received, generating a second control instruction with the content of the input authority and the streaming authority both being on;
s3, if receiving the instruction of leaving lesson, generating a third control instruction with the contents of off streaming authority and on input authority;
the student terminal comprises a second login module, a second display module, an input module, an instruction execution module and a second communication module;
the second login module is used for logging in a student account in the cloud server side according to the student account number input by the student;
the second display module is used for displaying the text stream, the video stream and the image data acquired from the cloud server;
the input module is used for acquiring input data of a student end;
the instruction execution module is used for executing the control instruction after receiving the control instruction; the instruction execution module specifically executes the following steps:
SS1, streaming video stream and image data in the cloud server end to the second display module in real time when receiving the first control instruction, and simultaneously, enabling the student end not to collect input data of the input module;
SS2, when receiving a second control instruction, the student end starts to collect input data of the input module, and pushes text streams and image data in the cloud server end to the second display module;
SS3, when receiving a third control instruction, the student end starts to collect input data of the input module; meanwhile, the second display module stops receiving the text stream, the video stream and the image data from the cloud server;
the second communication module is used for data transmission between the student end and the cloud server end.
2. The teaching assistance system based on cloud computing as claimed in claim 1, wherein the specific steps of transmitting text stream, video stream, image data, teaching instruction and control instruction between the teacher end, the student end and the cloud server end are as follows:
step one, after logging in a teacher account, a courseware selection module screens out all corresponding courseware from a courseware storage module in a cloud server terminal according to subject data and class data, a streaming distribution module connects a teacher terminal and corresponding student terminals to the same teaching group in the cloud server terminal according to an associated student account table, a lesson instruction is input through an instruction acquisition module, the instruction conversion module converts the lesson instruction into a first control instruction after receiving the lesson instruction, after the instruction execution module executes the first control instruction, the courseware is selected through a courseware selection module, a courseware playing module generates corresponding video stream, the image acquisition module starts to acquire and transmit the image data to the courseware storage module for storage, the streaming distribution module transmits the video stream to the teacher terminal corresponding to the teacher account in real time, and displays the video stream through a first display module, simultaneously transmitting the video stream and the image data to a student end in the same teaching group as the teacher end in real time, and displaying the video stream and the image data through a second display module;
step two, after a discussion instruction is input, an instruction conversion module converts the discussion instruction into a second control instruction after receiving the discussion instruction, an instruction execution module executes the second control instruction, an input module collects input data and sends the input data to a cloud server end, a courseware playing module generates a text stream according to the input data, a streaming distribution module pushes the text stream to a teacher end in real time, the text stream and image data are displayed through a first display module, and meanwhile the text stream and image data are pushed to a student end in real time and are displayed through a second display module;
and step three, after a class instruction is input, the instruction conversion module converts the discussion instruction into a third control instruction after receiving the discussion instruction, the instruction execution module continues to acquire input data, the courseware playing module stops generating video streams and text streams, and the image acquisition module stops acquiring image data.
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Application publication date: 20210105 |