WO2017193709A1

WO2017193709A1 - Internet-based teaching and learning method and system

Info

Publication number: WO2017193709A1
Application number: PCT/CN2017/077785
Authority: WO
Inventors: 刘佳; 陈铿帆
Original assignee: 深圳市鹰硕技术有限公司
Priority date: 2016-05-12
Filing date: 2017-03-23
Publication date: 2017-11-16
Also published as: CN105869091B; CN105869091A

Abstract

Provided in the present invention are an Internet-based teaching and learning method and system, in which the Internet, including wireless communication networks, is employed to conduct teaching and learning activities. The present invention specifically relates to a method and system enabling real-time recording of an Internet-based teaching and learning process and accurate and efficient cloud storage. By evaluating a learning result of a student on a learning aid document, the Internet-based teaching and learning method in the present invention enables understanding and differentiation of learning results of students at different levels, and achieves teaching, learning, tutoring, assignments, exercises, etc. in a targeted and differentiated manner, thus improving learning efficiency and learning results, and specifically facilitating the improvement for students having different learning progress. Furthermore, the present invention realizes efficient and accurate cloud storage of recorded data by employing a gateway for sending data back, and utilizing a data verification mechanism, a time stamp verification mechanism, audio and video stream verification mechanism, data retransmission mechanism, local fragmented and encrypted storage and upload mechanism, and the like.

Description

Internet teaching method and system

Technical field

The invention relates to an internet teaching method and system based on internet technology including using a wireless communication network to carry out teaching activities, which is helpful for improving the learning efficiency of students at different levels, thereby promoting the improvement of learning effect, and also relates to an internet teaching An Internet teaching method and system that records in real time and enables accurate and efficient cloud storage.

Background technique

At present, the traditional teaching mode, the teacher's teaching methods and teaching progress are mainly designed for secondary students, so that the classmates in the class will feel that the teacher has mastered, but the students will feel that learning is more difficult. However, for some obvious reasons, when the teacher asks the students whether they have mastered it, the difficult students usually cannot reflect the facts. The excellent students have already surpassed the teaching content in the class, which makes the teachers unable to clearly grasp the real learning situation of the students. Level-level students conduct targeted counseling.

This traditional teaching mode makes it impossible for teachers to master the progress of all students, to understand the learning effects of students at different levels, and to provide targeted counseling to students at different levels. Students also have knowledge of the curriculum. Unable to adjust their own learning progress, students can not carry out knowledge review and independent testing anytime and anywhere, which is not conducive to improving the learning speed and learning efficiency of students at different levels.

On the other hand, with the rapid development of mobile Internet and the rapid spread of mobile devices, cross-platform online education, online training, online conferences, and live broadcasts have become more common. The entire Internet industry has real-time courses on quality courses, online conferences, and online training. Recording has become a must-have function and basic requirement. The storage of real-time recorded data becomes more and more important. How to ensure large concurrent, massive (10,000, 100,000, million) online interactive classrooms or online interactive meetings, in real time When it is carried out, it is gradually becoming a concern of the Internet teaching field to realize the accurate and complete storage of the course content, the lecture process and the audio data recorded in real time to the cloud storage device.

Prior Art 1: CN103646573A (Publication Date March 19, 2014) discloses a method for generating a special format file of a panoramic mode teaching system, which includes a panoramic courseware production system, and a panoramic courseware production system to acquire a teacher or an interaction Actions, audio, course materials, and time data corresponding to the above data; the actions include: inserting text or images, experimenting with process demonstrations, drawing lines, drawing geometry, eraser tools, or small blackboard tools, teaching system Get the instant audio of the teacher or the interactor through the microphone, and collect the action of the teacher or the interactor on the current system interface through the mouse, keyboard, tablet or whiteboard, and analyze the action data to obtain the time and action generated by the action. Additional data and action type data carried by the path and action, and recorded in chronological order. The actions are divided into handwriting type, media type and data type. The handwriting type, the media type and the data type data include two parts: the path Part and data part; handwriting type action, then the path part complete recording action The physical coordinate sequence of the path, the data part is not enabled; the media type action, the path part records the coordinates of the multimedia file appearing in the courseware, the data part records the physical address of the multimedia file; the data type action, the path part records the data in the courseware The coordinates of the data, the data portion is written to the complete binary data stream of the file.

Prior Art 2: CN105306861A (Publication Date: February 3, 2016) discloses a network teaching recording and broadcasting method and system, wherein A technique for data stream storage using a file ID identifier and a timestamp identifier, and dividing at least one data stream into segments is disclosed.

Prior Art 3: CN105405325A (Publication Date: March 16, 2016) discloses a network teaching method in which a thread monitoring method is disclosed.

Prior Art 4: CN105469662A (Publication Date: April 6, 2016) discloses a real-time collection of student answering information, an efficient intelligent correction system and a use method in a teaching process, in which a method for intelligently correcting the answer information submitted by a student is disclosed. And the teacher manually corrects the corrections, and then returns the results of the correction to the student's technical plan.

Prior Art 5: CN104408984A (Publication Date: March 11, 2015) discloses a multi-teaching intelligent teaching system, specifically discloses that the teaching information is transmitted to the cloud server for storage by the camera device, wherein the teaching information is performed. Fragmentation.

In addition, the prior art: CN105118344A, CN105390037A, US2010/0227304A1 and CN104616546A also disclose a series of similar technical solutions.

In the prior art, online teaching/conference/training/live broadcast guarantees complete and accurate recording data, usually in the following ways:

1, teaching / conference / training / live broadcast, in the real-time course, through the built-in function to record the teacher / moderator to explain the process to the local cache, and then submit the upload. In this way, when the cache is cleared and the machine fails, the data cannot be returned to the server, and the integrity of the data cannot be guaranteed. In particular, the real-time storage and data integrity of the cloud cannot be guaranteed.

2, teaching / conference / training / live broadcast, in the real-time course, through FMS / Red5 / http streaming media technology, real-time data back. In this way, when the Internet fails or the communication status is poor, the integrity of the data cannot be guaranteed, and even the entire course data is lost.

3, teaching / conference / training / live broadcast, in the real-time course, the teacher / host himself to record locally or screen capture, after the recording is completed, the moderator uploads the way to ensure the data integrity of the recorded course. In this way, misoperations, cumbersome processes, inability to achieve real-time and uncontrollable enterprises, difficult to manage data, can not guarantee the effective, complete and accurate data transmission of millions of meters and 100,000.

4. Prior art 2 and 3 disclose the use of data stream, thread monitoring method, time stamp comparison method recording & storage, however, this method can not guarantee 100% real-time error-free storage of data, lack of valid data is correct, whether it exists or not Missing data verification mechanism, lack of effective massive (10,000, 100,000, mega-level) large concurrent data sorting processing (gateway access batch processing), lack of effective anti-data transmission process lost data repair and repair mechanism It is impossible to guarantee 100% effective, complete and accurate data transmission.

Summary of the invention

First of all, it should be noted that although the present invention has been described mainly in the name of an Internet teaching method and system, it can be understood that the method and system of the present invention, particularly the cloud storage technology of the present invention, can also be used as other Internet-based technologies. In particular, the cloud storage management of real-time recorded data of the online communication process of the mobile Internet realizes a data transmission method for ensuring accurate storage of the recorded data cloud.

That is to say, the cloud storage management of the recorded data of the Internet teaching related to the present invention can be used not only for the traditional meaning of Internet teaching, but also for online training, emergency command (map annotation and audio recording), financial system or online conference. Real-time recording of multimedia courses or conference content during the teaching process or conference process of the system, and in the process of Internet teaching, online training, emergency command (map annotation and audio recording), financial system (marketing explanation) or online meeting A data transmission method that guarantees accurate storage of recorded data in the cloud.

In view of the above problems, an object of the present invention is to provide an Internet teaching method and system for conducting teaching activities using Internet technologies, especially wireless communication networks, which are helpful for improving the learning efficiency of students at different levels, thereby promoting the improvement of learning effects.

In view of the above problems, another object of the present invention is to provide an Internet teaching method and system that can perform real-time recording of the Internet teaching process and enable accurate and efficient cloud storage.

The teaching method according to the present invention can improve the learning efficiency by using the Internet teaching system of the present invention to realize targeted teaching, counseling, homework, exercises, etc. by understanding the learning situation of the excellent, middle, and difficult students. In turn, it helps to improve the learning effect, and can help students with different learning progress to continuously improve.

Traditionally, the distinction between top, middle, and difficult students is often considered to be discriminatory. The so-called superior, middle, and difficult students in the present invention are only used for the sake of understanding, and the traditional such title is borrowed. The distinction between excellent, medium, and difficult is based on the specific content of a certain class, mainly through the classroom. The test is determined, and the purpose is to explain the teacher's targeted teaching afterwards, rather than to label students. For students, this distinction only represents the mastery of this knowledge when learning a student aid document. Such a mark is usually a mark or rating that is temporarily added or determined according to the learning situation after the student completes the study of the student aid document. Further, it is also possible to use the multi-level dimensions of the first, second, third, and fourth levels to distinguish, and is not limited to the foregoing three types.

The internet teaching method according to the present invention comprises the following steps:

In the document editing step, the teacher uses the teaching terminal to log in to the teaching client, and can edit the student aid document using the Web editor, and save the edited student aid document to the system server;

The student document sending step, the teacher obtains the list of the student aid document, selects the corresponding student aid document according to the course requirement, and sends it to the corresponding class student;

The student document acquisition step, the student uses the student terminal to log in to the student client, obtains the student aid document sent by the teacher, and prepares for online learning;

Student learning document learning steps, students learn the acquired student aid documents, complete learning objectives and learning tasks, participate in self-test.

The learning process monitoring step, during the student's study, the teacher logs in to the teacher client through the teacher terminal, and can view and monitor the student's learning situation at any time; the learning situation includes the time the student stays on each page, and the time for completing each question. Comparison with set time, test results, correspondence between test problems and page time, and problems with class

The intelligent grouping step, the system classifies and marks the current learning situation of the students according to the student's learning result analysis, and then realizes intelligent grouping of students at different learning levels;

After the grouping is completed, after the intelligent grouping is completed, different groups of students form virtual classes through the system, and the teacher realizes targeted teaching and counseling for different grouped students through the teacher client, and explains the wrong questions.

The passive lecture class of the invention is active learning. Through the analysis of the learning effect of the student aid document, the students are intelligently grouped, and according to the grouping situation, the virtual class is set up, and the targeted grouping of the network is taught, and the subsequent columns are arranged. Teaching activities are based on such groupings, including the recording of courses based on the results of group teaching. Such inventive concepts are not disclosed in the prior art, nor are such technical implications given.

The real-time recording steps in the classroom, in the process of group teaching and coaching, the system records the classroom teaching process in real time;

The history course review steps, after the completion of the classroom teaching process, students can log in to the system to access the recorded course data remotely after class, for learning and review.

The student document save step, save the student aid document sent by the teacher to the student, and form a student record;

The error-recording automatic recording step saves and records the wrong questions during the learning period including the learning document, and forms a wrong record; here, the wrong question may also be a question that the student considers to be more important during the learning period. ;

In the student documentation review step, students can access historical student documentation records and repeat learning at any time via the Internet.

The exercise editing step is used to edit the exercises. The content of the exercises includes the exercises themselves, the answers to the exercises, the detailed explanations of the exercises, and various attribute labels of the exercises. When editing the exercises, add fixed difficulty coefficients and dynamic difficulty coefficients to each exercise. The difficulty coefficient is the ratio of the number of errors and the total number of times tested according to the practice. The fixed difficulty coefficient is the difficulty coefficient determined by experience, and the difficulty coefficients correspond to the different levels of the students.

Question bank management steps for storing and managing edited exercises, and can automatically generate test papers or problem papers according to the user's request or other module needs, according to the given knowledge points or learning chapters, for the students to conduct self-test after class And the self-test, students can also view the correct answers and detailed analysis of each topic after completing the exercises.

The learning document learning step specifically includes:

First learn the learning objectives;

After the learning target learning is completed, at least one learning content in the student learning document is started to be learned, and the learning content may include text content, image content, video content, and audio content, and the learning content may be distinguished according to the course section;

After each learning content is completed or after a plurality of learning contents are completed, the test is conducted in the test section of the student aid document, which is usually a test in the form of a section;

After the student's learning task is completed, the entire section of the course has been tested for overall testing to achieve self-assessment of the entire learning process.

The learning process monitoring step specifically includes:

When the student conducts the learning task and self-test according to the student aid document, the teacher can view the progress of each student and the average progress of one class in real time through the teacher terminal;

After the learning task and the test are completed, the teacher can view the learning result of each student through the teacher terminal, and the learning result includes learning The completion of the content, the time each page stays, and the time of each question.

The wrong question may be a topic that the student considers to be more important during the study and is specially marked.

The classroom real-time recording step further includes:

Get each course ID;

Generate a file identification ID;

Collecting audio and video streams and motion streams;

Fragmentation of collected audio and video streams and motion streams;

The collected audio and video streams and the local terminal of the action stream are stored. During the real-time recording process of the teaching process, the teacher terminal synchronizes the audio and video streams and the local buffer of the action stream, caches the data and classifies the data, and encrypts and stores the current recorded data, including: time: Poke + audio and video streams, time stamps + action streams, or time stamps + other data streams, etc., bundled with the course ID to achieve localized fragmented encryption storage of recorded data;

Generate a timestamp identifier;

Data transmission encryption;

According to the course ID, audio and video stream clips, and action stream clips, each course is independently cached and queued and synchronized for multiple courses to achieve massive data stream batch processing.

The data receiving gateway performs multi-process queue data verification, including starting multi-process, each process carrying thousands of real-time courses and queuing at the same time to realize real-time data return and distribution;

The course ID, file identification ID, and timestamp are respectively encrypted and saved to the database according to the set format;

The audio and video streams are checked by the data receiving gateway for data queuing;

The audio and video stream file identification ID, timestamp, and course ID are encrypted and fragmented and stored to the cloud disk array.

The database server forms a data identification record, and the data described herein includes a course ID, a course start/end time, a teacher ID, an action flow stored in the class, an audio and video stream, and a data identification record for the corresponding course, for data Storage and on-demand review.

If the Internet cannot obtain the request, only the local storage of the teacher terminal is performed. After the Internet is restored, the re-delivery mechanism is activated, and the multimedia gateway batch processing and data verification return transmission are implemented, and stored in the cloud server.

The real-time audio and video stream of the teacher's lecture can be divided into a segment by the fixed size of each audio and video stream, and the data stream segment is combined with the course ID, the current course time is generated by the current time of the course, and the file path is stored. A table of correspondence between stream segments and the current course.

Split into a segment when the data stream does not reach the set fixed size value within 10 seconds or 20 seconds.

The aforementioned data transmission process uses SSL for data encryption transmission.

The data verification mechanism is used to compare the audio and video streams and the action stream. When the data is abnormal during the verification phase, the data exception processing process is started, and the teacher or the student client communicates to compare the time stamp and the comparison data stream. Synchronous retransmission is implemented for the abnormal single timestamp data, and the supplementary data covers the current abnormal data.

The data verification mechanism includes:

The first verification, for the real-time recorded audio and video stream and the action stream, is first compared with the corresponding data buffered by the terminal at the time of transmission, and when the data is abnormal, the data corresponding to the timestamp corresponding to the local buffer is automatically transmitted to the data receiving. Gateway

The second check, after receiving the action flow, the data receiving gateway performs an action flow check;

The third check, after receiving the audio and video stream, the data receiving gateway performs audio and video stream verification.

The second check includes:

By decrypting the action flow and performing motion flow verification on the decrypted data through a standard specification protocol, when the data is abnormal, the action flow data is automatically corrected to realize distribution and storage, thereby realizing effective and consistent action flow;

After decryption, if the data is found to be empty or cannot be corrected, it is automatically compared with the local cache data of the teacher terminal to implement the supplemental transmission;

If the local cache of the teacher terminal is consistent with the data, it is not processed and stored in the data server, and each action flow is associated with the course ID and the current time of the course, and is used to form a course on-demand during the on-demand review;

Each action of the multimedia operation has a standard specification protocol, and the action sender (teacher) and the action receiver (student) are required to comply with the standard specification protocol.

The third check includes:

Set the abnormal standard of the audio and video stream, the non-abnormal standard file size, and perform an abnormal file size comparison for each audio and video stream;

Audio and video watermarking is added to the audio and video recording process, and the watermark comparison is implemented by a standard watermarking algorithm to confirm whether the audio and video stream is complete and effective;

When the audio and video stream is found to be abnormal, it is automatically compared with the local cache data of the teacher terminal to implement the supplemental transmission;

When the local cache of the terminal client is consistent with the data, it is not processed and stored in the corresponding disk path of the data server. Each audio and video stream is associated with the course ID and the current time of the course, and is used to form a course on-demand when on-demand review.

The invention improves the fragmentation processing mechanism, organically uses and improves various data transmission and verification mechanisms, effectively solves the problem of transmission and storage of a large number of recorded data streams, and ensures accurate transmission and storage of data, and the invention also adopts The way the database server and the disk array store different data separately improves the speed of data storage and reading. Such inventive concepts are not disclosed in the prior art, and such technical inspiration is not given.

An internet teaching system according to the present invention includes a system server, a data server, a teaching terminal, a teacher terminal, a student terminal, and a teaching process data collecting device. The teaching process data includes an audio and video stream and an action stream, and is characterized by:

The teaching terminal is used for the teaching client of the teacher login system, and can implement the calling and operation of the system's problem editing module and the question bank management module;

The teacher terminal, used for the teacher client of the teacher login system, can implement the call and operation of the course recording module of the system;

The student terminal, which is used for the student client of the student login system, can implement the call and operation of the historical course review module of the system.

The exercise editing module is used for editing the exercises, and the exercises include the exercises themselves, the answers to the exercises, the exercises, and the exercises. Various attribute tags, edited exercises will be stored in the question bank management module;

The question bank management module is configured to store and manage the edited exercises, and can automatically generate a test paper or a problem paper according to the given knowledge point or the learned chapter according to the user request or other module requirements, and is used to give the student an after-school instruction. Self-test, and self-test, students can also view the correct answers and detailed analysis of each topic after completing the exercises.

The course recording module, in the teacher teaching process, the course recording module initiates recording of the course, and saves and transmits the recorded course data to the cloud storage device.

The history course review module stores the course data recorded by the course recording module on a cloud storage device or a data server, and the student can log in to the student client through the ID to perform review playback.

The teaching terminal can also implement the calling and operation of the auxiliary document editing module of the system;

The teacher terminal can also implement the calling and operation of the system's student aid document distribution module, the course monitoring module, the intelligent grouping module, and the grouping teaching module;

The teacher terminal can also implement the calling and operation of the system's class module, group listening module, and student documentation review module.

The auxiliary document editing module is configured to edit the learning objectives, learning tasks, and course test questions of the course into a helper document;

The student aid document distribution module is configured to obtain a list of student aid documents, select a student aid document to be sent to a class of students or send to a certain class or group of students for online learning;

The course monitoring module is configured to monitor a course, that is, the process of learning the aided learning document, the real-time statistical analysis, the real-time view of each student's learning progress, and the learning situation of the entire class; the learning result includes the student in each The time spent on each page, the time to complete each question, the comparison with the set time, the test results, the correspondence between the test problems and the page time, and the problems in the class.

The intelligent grouping module implements grouping of learning levels of the current class according to the statistical analysis result of the course monitoring module, and the grouping can be distinguished according to the level of excellent, medium and difficulty, and provide basis for subsequent group teaching and coaching;

The grouping teaching module classifies the students belonging to the same level according to the grouping situation of the intelligent grouping module to establish a new virtual class, and the teacher conducts the class in a targeted manner to teach relevant knowledge;

The class module is used for the student to learn the assigned student aid document and the automatic judgment and achievement of the test content of the student aid document;

The group listening module is configured to intelligently adapt the grouping of the teacher terminals to realize the grouping of the students;

The student documentation review module is configured to save the student learning documents that have been learned or assigned. The student learning documents can be retained on the student terminal, and the student can log in to the client through the ID for retrospective learning.

When editing the exercises, add a fixed difficulty coefficient and a dynamic difficulty coefficient to each exercise. The dynamic difficulty coefficient is the ratio of the number of errors and the total number of times tested according to the practice. The fixed difficulty coefficient is based on experience. Determine the difficulty factor.

The editing module is a web editing module, and the content of the learning aid document includes a text file, an audio file, a video file, and/or a picture file.

In the class module, the students can actively mark the exercises while doing the exercises, and the marked exercises will be transmitted to the wrong module in a special type of wrong way.

The student terminal can also call the extra-curricular document module, including the content of all the sections and the superior knowledge of the subject, and the students can read and learn online and expand the knowledge.

The specific execution steps of the classroom real-time recording module include:

Get each course ID;

Generate a file identification ID;

Collecting audio and video streams and motion streams;

Fragmentation of collected audio and video streams and motion streams;

Generate a timestamp identifier;

Data transmission encryption;

The database server forms a data identification record for data storage and on-demand review.

The data verification mechanism includes:

The first check compares the audio and video streams and the action stream recorded in real time with the corresponding data cached locally by the terminal during transmission. When the data is abnormal, the data corresponding to the timestamp corresponding to the local cache is automatically transmitted to the data receiving gateway;

The second check includes:

The third check includes:

For the real-time audio and video stream of the teacher lecture, you can set the fixed size of each audio and video stream into a segment, and combine these data stream segments with the course ID, the current course time generated by the current time of the course, and the file path of the file storage. Construct a correspondence table between the data stream segment and the current course.

Compared with the prior art, the Internet teaching method and system according to the present invention has the following advantages:

Using wireless communication network technology, especially the Internet, the traditional passive listening course is transformed into active reading class, passive learning is self-learning, and generalized teaching is targeted teaching.

Through the statistical analysis of the learning situation of the aided documents, it is possible to realize the intelligent grouping of students and realize the follow-up targeted teaching, which helps to solve the problem of the excellent students accompanying the students in the classroom, and helps to improve the students. Learning efficiency in unit time.

By obtaining the student's learning situation of the student aid document, the teacher can grasp the student's learning situation at any time, and learn the progress of the study in real time. Intelligent grouping can provide targeted online teaching and after-school tutoring for students at different levels.

Students can learn independently at any time and understand their mastery of knowledge at the first time to adjust the progress of learning. Teachers can also adjust and edit the content of teaching documents in a timely manner according to the understanding of the learning situation.

Students can review historical knowledge and practice the wrong questions at any time to help improve learning efficiency.

The invention can also realize real-time recording for the teaching process, realize high-concurrency massive data shunt queuing batch processing, and perform real-time data check, time stamp verification, audio and video stream integrity check, data through real-time recording and returning process. The re-delivery mechanism and the local fragmented encrypted storage upload mechanism ensure the integrity and accuracy of the recorded data throughout the course.

Through multi-gateway clustering and multi-process data offload processing, the cloud can ensure complete and accurate storage of high-concurrency massive courses/meetings/training real-time recorded backhaul data.

The entire data cloud is fragmented and classified into disk array technology, and the data cloud is secure and stable.

The invention firstly finds the technical problems existing in the prior art through the creative analysis of the prior art, systematically solves the prior art through the overall innovative invention concept, through the utilization of these technical means and the improved organic combination thereof. The technical problems existing in the process of Internet teaching have achieved unexpected technical effects. Such a technical solution is obviously not a simple superposition of the prior art means.

DRAWINGS

1 is a topological view of an internet teaching system in accordance with the present invention;

2 is a schematic flow chart of an internet teaching method according to the present invention;

Figure 3 is a functional block diagram of an internet teaching system in accordance with the present invention;

4 is a schematic diagram of a recording data storage flow of an internet teaching method according to the present invention; and

Figure 5 is a diagram showing the verification of the recorded data storage of the Internet teaching system in accordance with the present invention.

detailed description

The specific embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

1 is a topological diagram of an internet teaching system in accordance with the present invention. As shown in FIG. 1, the Internet teaching system of the present invention includes a system server (or a teaching server), a data server (including a database server and a magnetic cabinet (disk array)), a teaching terminal, a teacher terminal, a student terminal, and a teacher terminal. A local storage device, and a teaching process data collection device or the like not shown in the figure, the server and each terminal are connected via the Internet.

The system server is used for data processing, data push, statistical analysis, intelligent grouping, group teaching, question bank management, and extracurricular document management.

Compared with the prior art, the present invention adopts a dual storage manner, and the data server includes a database server and a disk array, wherein the database server is mainly used for service data such as action flow and course association data (or classroom association data). Distribution and associated storage, the disk array is mainly used for real-time recording of audio and video streams for transmission and storage, thereby realizing the purpose of storing different data separately for independent storage association management. The action stream, the audio and video stream are from a teacher user in a teaching process, a presenter of an online meeting, or a main speaker of an interactive communication event.

The Internet may be a local area network (such as a campus network) and a wide area Internet, and may be wired or wireless, such as 2G/3G/4G/WIFI for communication, or any combination of these Internet methods. The Internet teaching system of the present invention adopts the B/S architecture as a whole.

The terminal (such as a teaching terminal, a teacher terminal, and a student terminal) includes: a processor, a network module, a control module and a display module, and an operating system. The terminal may be provided with a plurality of data interfaces for connecting various extension devices and accessories through a data bus. The teaching terminal, the teacher terminal, and the student terminal can use Windows, Android and its improvement, or an iOS operating system, on which an application software or an APP can be installed and run, and various application softwares and services under the operating system are implemented. And the features of the app store/platform.

The terminal (such as a teaching terminal, a teacher terminal, a student terminal) can use various mobile accessible devices such as a tablet computer, a smart phone, a notebook computer, etc., as long as the devices are installed, as long as the devices are installed based on the present The application software client or APP of the inventive method or system can be used. You can also use a custom 10.1-inch Android tablet. The terminal needs to use the login account and password to enter the software client or APP of the Internet teaching system of the present invention.

For the teaching terminal, the teacher terminal, and the student terminal, different users use different identities to log in to the software client or APP of the corresponding terminal, and the device enters the corresponding system interface to implement the corresponding function.

The teaching process data acquisition device collects an audio video data stream and an action stream of the teaching process. The audio and video stream forms an audio and video file after the audio and video streaming media is transmitted. The action flow refers to data such as brush marking, circle drawing, line drawing, clearing, and page turning of the teacher in the classroom or in the meeting.

2 is a flow chart showing an internet teaching method according to the present invention. As shown in FIG. 2, the Internet teaching method of the present invention includes the following steps:

Student learning document learning steps, students learn the acquired student aid documents, complete learning objectives and learning tasks, participate in self-test;

Students usually follow the order of the content of the student-assisted documents displayed on the Web page:

First learn the learning objectives;

After the student's learning task is completed, the entire section of the course has been tested for overall testing to achieve self-assessment of the entire learning process;

The learning process monitoring step, during the student's study, the teacher logs in to the teacher client through the teacher terminal, and can view and monitor the student's learning state and learning result at any time;

Specifically, when the student performs the learning task and self-test according to the student aid document, the teacher can view the progress of each student and the average progress of one class in real time through the teacher terminal;

After the learning task and the test are completed, the teacher can view the learning result of each student through the teacher terminal, and the learning result includes the completion of the learning content, the time of each page staying, the time of each question, and the set time or Comparison of historical time, test results, correspondence between test problems and page time, and key problems and general problems in the class;

As the overall learning ability of students may be different, it may be that the overall learning ability is stronger or worse than the previous learning ability, and a coefficient is obtained to adjust the difficulty or quantity of the exercises after class;

After the grouping is completed, after the intelligent grouping is completed, different groups of students form virtual classes through the system, and the teacher realizes targeted teaching and counseling for different grouped students through the teacher client, and explains the wrong questions;

Further includes the following steps,

3 is a functional block diagram of an internet teaching system in accordance with the present invention. As shown in FIG. 3, the teaching system mainly calls each module of the system through the teaching terminal, the teacher terminal, and the student terminal, thereby performing corresponding teaching functions.

Teaching terminal:

By logging in to the teaching client through the teaching terminal, the call editing operation module, the question bank management module, the student documentation editing module, and the like of the Internet teaching system of the present invention can be called and operated.

The problem editing module is used for editing the exercises. The content of the exercises usually includes the exercises themselves, the answers to the exercises, the detailed explanations of the exercises, and various attribute tags of the exercises. The edited exercises will be stored in the question bank management module, and The edited plurality of exercises are batch-introduced into the question bank management module, and the edited exercises can be used for various exercises and tests of the Internet teaching of the present invention, such as a classroom exercise as a student aid document, and different for after-school exercises. Level students arrange homework after class. The exercises can be accompanied by various tags such as the knowledge points to which they belong, the chapters to which they belong, and the like. Preferably, when editing the exercise, a fixed difficulty coefficient and a dynamic difficulty coefficient are added to each exercise, and the dynamic difficulty coefficient is a ratio of the number of errors and the total number of times tested according to the practice, and the fixed difficulty coefficient is Based on the empirically determined difficulty factor, this difficulty factor can correspond to different levels of the student's hierarchy.

The question bank management module is configured to store and manage the edited exercises, and can automatically generate a test paper or a test paper according to a given knowledge point or a learned chapter according to a user request or other module needs, such as a helper document editing module. It is used to give students self-test after class, self-test after class, etc. After completing the exercises, students can also view the correct answers and detailed analysis of each topic.

The student help document editing module is used for editing the learning objectives, learning tasks, course test questions, and the like of the course. The editing module is preferably a web editing module, more preferably a dedicated web editing module. The teacher can operate and use by directly logging in to the teaching terminal, or can remotely log in to the teaching terminal by using the Internet by the teacher terminal to operate the learning document editing module.

The editing of the student aid document includes the following steps:

After the teacher logs in to the teaching client, he enters the assistant document editing through the web editor module;

The student aid document usually consists of three parts: 1) teaching chapter goals; 2) teaching tasks, which can add multiple section exercises; 3) classroom tests, such as self-testing.

The teacher can edit the learning target according to the current chapter's chapter goal. The chapter can be divided into multiple sub-learning tasks to edit multiple learning tasks. Each learning task includes the task learning goal and the task test topic. After the task editing is completed, the task is performed. After the addition and editing of the self-test exercises in the classroom, students can conduct self-tests in the classroom after the learning tasks, thus consolidating their own learning content and examining their own learning outcomes.

The content of the student aid document may be a text file, an audio file, a video file, and/or a picture file, and the like. According to the needs of different disciplines, you can add corresponding audio, video, text (including learning objectives, learning content descriptions, practice exercises, etc.), pictures, etc. for Web editing, and form learning documents in the form of learning pages.

Teacher terminal:

The teacher terminal can log in to the teacher client, and can call a function module such as a student aid document distribution module, a course monitoring module, an intelligent grouping module, a group teaching module, a course recording module, and a homework module.

The student aid document allocation module is configured to: the teacher obtains a list of the assisted student documents that have been edited, and may select a student aid document to send to a certain A class of students or some students or groups sent to a class for online learning.

The course monitoring module is configured to monitor a course, that is, the process of learning the aided learning document, the real-time statistical analysis, real-time view of each student's learning progress, and the learning progress and learning situation of the entire class, including each learning page. The time of stay, the answer time of the exercises, the right or wrong of the exercises, etc.

The intelligent grouping module implements grouping of learning levels of the current class according to the statistical analysis result of the course monitoring module, and the grouping can be distinguished according to the level of superiority, neutrality and difficulty, and provide basis for subsequent group teaching and counseling.

The group teaching module classifies the students belonging to the same level according to the grouping situation of the intelligent grouping module to establish a new virtual class, and the teacher conducts the class in a targeted manner to teach relevant knowledge. Students belonging to a virtual class have the authority to access the exclusive teaching resources of the virtual class, and the authority to obtain the key of the class teaching process for reviewing and recording.

The course recording module starts the course recording in the form of a virtual class for the teachers of different levels, and the course recording module starts recording the course and saves and transmits the recorded course data to the cloud storage device.

Through the module, the Internet teaching of the present invention automatically forms a course history record after the end of the course, and realizes the data back to the system server or the data server for storage through the real-time back-transmission mechanism, thereby ensuring that the student can review and correct at any time through the course record module. The history course is reviewed. Specific steps regarding course recording and its data transfer will be further described below.

The after-school work module is used for sending after-school assignments for students of different groups of different classes, real-time viewing and correction, and implementing targeted after-school tutoring according to the aptitude of the students.

Student terminal:

Using the student terminal to log in to the student client, you can implement functions such as class, class, class review, wrong title review, extended study, after-school test, and homework assignment. You can call the class module, group lecture module, test practice module, and wrong book. Modules, extracurricular document modules, after-school work modules, student documentation review modules, history course review modules and other functional modules.

The class module is used for the student to learn the assigned student aid document and the automatic judgment and achievement of the test content of the student aid document. Further, when students are doing exercises, they can take the initiative to mark the exercises. For example, some questions may be correct. Students do not fully master this knowledge when answering questions. Students can mark them. These marked exercises will be Transfer to the wrong module in a special type of wrong way.

The group listening module is configured to intelligently adapt the grouping of the teacher terminals, so that the students enter virtual classes belonging to the same learning level, and implement group listening classes.

The test practice module is configured to perform a response of the exercise, analysis of the answer result and analysis of the answer, or realize the self-testing and self-test by automatically calling the question bank management module of the Internet teaching system of the present invention, automatically judging the volume and viewing the title The correct answer and analysis. Through this module, excellent students can learn more future knowledge and practice in online group after class. Middle or difficult students can learn different knowledge points according to their own learning conditions, which helps to improve the learning efficiency of students at different levels. .

The wrong problem module is used to concentrate various wrong questions of the class module and the wrong question of the test contact module in the module, and realize the matter After further targeted exercises and review. Further, the Internet teaching system of the present invention can also list the key mistakes of the class for the students to pay attention to when learning. In the process of learning, the students will automatically generate the wrong record in the wrong title, and realize the effect of the wrong practice to improve the student's academic performance.

The extracurricular document module includes all the content of the syllabus and the superior knowledge of the subject. The students can read and learn online, expand the knowledge, and better understand and better understand the knowledge points explained in the teacher's class. In a nutshell, this module is designed to enable students to learn the relevant knowledge related to the course after class, expand the knowledge range of the students and learn more about the course-related knowledge content and books, and improve the reading ability while deep and thorough. Understand the explanations of the teachers in the class.

The after-school work module is configured to receive an after-school assignment arranged by the teacher through the teacher terminal, and can complete the after-school homework online or offline, and if the offline needs to upload the answer result after the event.

The student documentation review module is configured to save the student learning documents that have been learned or assigned. The student learning documents may be retained on the student terminal, for example, in the form of a cache, or may be retained on the server, and the student may pass the ID. Log in to the client for review.

The history course review module stores the course data recorded by the course recording module on a cloud storage device or a data server, and the student can log in to the client through the ID and obtain the key provided by the teacher client on the teacher terminal to play. Or, you can only use this data if you join a certain virtual class.

4 is a schematic diagram of a recording data storage flow of the Internet teaching method according to the present invention, and FIG. 5 is a schematic diagram of a recording data storage verification of the Internet teaching system according to the present invention. As shown in FIGS. 4 and 5, according to the Internet teaching method and teaching system of the present invention, in the process of teaching a group by a teacher, through the teaching process data collecting device of the system (usually connected with the teacher terminal), the teacher terminal can realize The streaming media method records the teaching process or the course in real time, and uses the data backhaul gateway to collect the collected action streams and audio and video streams (since the specific collection methods of these data streams belong to the prior art, and will not be described here). The encrypted transmission is transmitted back to the system server data receiving gateway, and the gateway performs batch processing, proofreading, decryption and transmission to the corresponding location or database, that is, the audio and video streams for each course are independently generated by the data server on the disk array. The folder path is stored and implemented in association with the course ID. The action flow and course association data for each course are stored in the course ID detail table by the data server on the database server in a database manner to realize real-time data processing and storage. The database method includes a method of the course ID+course association data, and the course association data includes a teacher ID, an introduction, and the like.

When high-concurrency large-volume backhaul data is encountered, multi-threading is started and the data is queued for batch processing, through data verification mechanism, timestamp verification mechanism, audio and video stream verification mechanism, data replenishment mechanism, and local fragmentation. Encrypted storage and uploading mechanisms and other means to achieve efficient and accurate storage of recorded data.

During the real-time recording and transmission process of the teaching process, the local data cache of the teacher client (teacher terminal) is synchronized to realize double backup of data (including terminal local storage + system server-side storage), and the action stream, audio and video stream is transmitted to the system server. At the time, the data receiving gateway, the data verification mechanism, the data batch processing mechanism, etc. perform accurate/validity verification on the data, and batch receive and split each classroom data (the action stream encrypts the string and stores it in the database, the audio and video stream and The course ID is associated with the specified storage location (path) and is associated with the time data to form a number According to the fragmented storage) storage, the data verification mechanism is compared with the verification standard. When the data is abnormal, the data replenishment mechanism is automatically adopted, and the student client locally caches the data for data transmission, thereby realizing the integrity and accuracy of the classroom data. Sex and effectiveness, guarantee the complete and effective storage of the entire recorded data of the system.

The specific steps are as follows:

Get each course ID;

Generate a file identification ID;

The audio and video streams and motion streams are collected. The audio and video streams adopt ACC audio and video compression and encoding processing methods, so that the 45-minute classroom multimedia lectures (including courseware explanation and real-time audio) can still be viewed smoothly in the 2G network environment and the sound quality is very clear;

Fragmentation processing of collected audio and video streams and motion streams, the specific method is as follows: the real-time audio and video stream of the teacher lecture can set the fixed size of each audio and video stream into a segment, if the data stream is not in 10 seconds or 20 seconds When the set fixed-size value is reached, it is split into a segment, and these data stream segments are combined with the course ID, the current course time (time stamp, generated by the current time of the course (year, month, minute, second)), and the disk path of the file storage. Construct a correspondence table between the data stream segment and the current course;

The collected audio and video streams and the local terminal of the action stream are stored. During the real-time recording process of the teaching process, the teacher terminal (usually the mobile terminal) synchronizes the audio and video streams and the local buffer of the action stream, caches the data into fragments, and encrypts and stores the current recording. Data, such as: time stamp + audio and video stream, time stamp + action stream, time stamp + other data stream, etc., combined with the course ID to achieve localized fragmented encryption storage of recorded data;

Generate a timestamp identifier;

Data transmission encryption, such as SSL encryption for data transmission;

Each course carries out independent data caching (according to course ID, audio and video stream segments, motion stream segments) and queuing and synchronizing multiple processes for multiple courses to achieve massive data stream batch processing;

Massive real-time classroom, multimedia classroom real-time batch return of massive action flow, audio and video streams;

Multi-data processing gateway or data receiving gateway performs multi-process queue data verification, including opening multiple processes, each process carrying thousands of real-time courses and queuing at the same time to realize real-time data return and distribution;

The course ID, the file identification ID, and the timestamp are respectively encrypted and saved to the database of the database server according to the set format; the setting format includes generating an encrypted string for each piece of information and storing it in the curriculum of the database in the database server. .

The audio and video stream file identification ID, time stamp, and course ID are encrypted and fragmented and stored to the cloud disk array;

The database server forms a data identification record for data storage and on-demand review; wherein the data identification record includes a course ID, a video and video stream JSON (JavaScript Object Notation) - a plurality of records, and for each record, a format time stamp + sound The video file path is encrypted into a string mode and the action stream JSON-multiple action flow records; wherein, the data format is: timestamp + action string; the software APP will be parsed according to the agreed specification, such as: 1 for the brush, 2 For the eraser, etc., the X and Y coordinates are encrypted as a string.

Wherein, if the Internet cannot obtain the request, the local storage of the teacher terminal (such as a mobile terminal or a computer terminal) is performed, and the mutual storage is performed. After the network is restored, the re-transmission mechanism is started, and the multimedia gateway batch processing and data verification return transmission are implemented, and stored in the cloud server;

Through these steps, the large-scale concurrent teaching process of the entire course/live broadcast can be recorded in real time and stored in the cloud server completely and accurately.

Encrypted transmission of recorded data:

The teacher uses the multimedia whiteboard (such as electronic whiteboard, PPT document operation, etc.) to mark and real-time voice explanation, the system synchronously collects its live video, the system uses the Socket communication interface, and the whole data transmission process adopts asymmetric asynchronous encryption and decryption method, teacher/student customer. The end is different from the secret key of the system server (system server) for data transmission and storage.

The data collected in the teaching process realizes data asynchronous encryption A through local encryption technology. For example, the known RSA asymmetric encryption algorithm is used to encrypt the data to form the key A.

The network transmission is realized by the SSL encryption protocol, and the transmission process adopts data breakpoint backhaul protection, thereby realizing data security back to the data server. The data server contains audio and video file storage disk locations, and associations to meetings or courses, as well as a database server. The data server includes a disk array and a database server. The data server is used for audio and video streams, motion streams, system function data, and storage of data generated by the teacher/student during use.

The data server uses the secret key B, for example, using a known RSA asymmetric encryption algorithm to decrypt the data, using the key B to decrypt the transmitted data, and performing data analysis. The B key is automatically generated on the system server (server) according to a certain time rule according to a certain user ID, and the security of the security key is regenerated once in a natural week.

Data verification and supplementation

Data verification during data transmission includes verification of audio and video streams, verification of motion streams, and verification of other data streams during multiple lectures.

During the real-time recording process of the teaching process, the audio and video stream and the action stream are compared and verified by the data verification mechanism. When the data is abnormal during the verification phase, the data exception processing process is started, and the teacher or student client communicates to compare the time. Poke and compare data streams, realize synchronous retransmission for abnormal single timestamp data, and replenish data to cover current abnormal data, and realize multiple integrity and error-free protection of data.

The first check, for the real-time recorded audio and video stream and the action stream, is first compared with the corresponding data cached by the terminal at the time of transmission, and when the data is abnormal, the time stamp corresponding to the local cache is automatically transmitted (usually the current course time) Corresponding data to the data receiving gateway;

The second check, after receiving the action flow, the data receiving gateway performs an action flow check.

The data verification mechanism decrypts the action flow, and performs motion flow verification on the decrypted data through the standard specification protocol. When the data is abnormal, the action flow data is automatically corrected to realize distribution and storage, thereby realizing effective and consistent action flow. ;

After decryption, it is found that the data is empty or cannot be corrected (possibly due to data loss or packet loss in the transmission process), and the client cache (teacher terminal) is automatically compared with the locally cached data to implement the supplemental transmission;

If the local client (teacher terminal) local cache is consistent with the data, it is not processed and stored in the data server. Each action flow is associated with the course ID and the current time of the course, and is used to form a course on-demand during on-demand review. ;

Set abnormal standards of audio and video streams, non-abnormal standard file size data, and compare file size anomalies (with non-anomalous standard data) for each audio and video stream;

When it is found that the audio and video stream is abnormal, it is automatically compared with the local client (teacher terminal) locally cached data to implement the supplemental transmission;

History course review

When the student reviews the on-demand history course, the student obtains the data stream of the corresponding course through the corresponding course ID, and obtains the action flow and associated data, and the audio and video stream corresponding to the course ID from the database server and the disk array of the data server, respectively. Each student ID has an independent key B, which decrypts the obtained data stream, and combines the fragmented data according to the course time sequence to realize the complete online playback of the course, thereby realizing online on-demand. The system server provides a corresponding key B by each user ID (teacher ID/student ID), and the encryption key of the system server for the recorded data is the secret key A.

In the above embodiment, various terminals and servers may be configured by being connected to a communication network including the Internet, particularly a wireless communication network, so that the program code may be carried by the program in a manner of downloading the program code via the communication network. media. In the case where the program code is downloaded from the communication network as described above, the program for downloading may be stored in the main device or may be installed from another recording medium. Furthermore, the present invention can be implemented by the above-described program code in the form of transmitting a computer data signal embodied in a carrier wave.

The preferred embodiments of the present invention have been described above, and are intended to provide a further understanding of the embodiments of the present invention. It is intended to be included within the scope of the appended claims.

Claims

An internet teaching method comprising the following steps:

In the document editing step, the teacher uses the teaching terminal to log in to the teaching client, and can edit the student aid document using the Web editor, and save the edited student aid document to the system server;

The student document sending step, the teacher obtains the list of the student aid document, selects the corresponding student aid document according to the course requirement, and sends it to the corresponding class student;

The student document acquisition step, the student uses the student terminal to log in to the student client, obtains the student aid document sent by the teacher, and prepares for online learning;

Student learning document learning steps, students learn the acquired student aid documents, complete learning objectives and learning tasks, participate in self-test;
The teaching method of claim 1 further comprising the steps of:

The learning process monitoring step, during the student's study, the teacher can log in to the teacher client through the teacher terminal, and can view and monitor the student's learning situation at any time;

The intelligent grouping step, the system classifies and marks the current learning situation of the students according to the student's learning result analysis, and then realizes intelligent grouping of students at different learning levels;

After the grouping is completed, after the intelligent grouping is completed, different groups of students form virtual classes, and the teacher realizes targeted teaching and counseling for different grouped students through the teacher client, and explains the wrong questions.
The teaching method according to claim 2, further comprising the steps of:

The exercise editing step is used to edit the exercises. The content of the exercises includes the exercises themselves, the answers to the exercises, the detailed explanations of the exercises, and various attribute labels of the exercises;

Question bank management steps for storing and managing edited exercises, and can automatically generate test papers or problem papers according to the user's request or other module needs, according to the given knowledge points or learning chapters, for the students to conduct self-test after class And self-testing, students can also view the correct answers and detailed analysis of each topic after completing the exercises;

When editing the exercises, add a fixed difficulty coefficient and a dynamic difficulty coefficient to each exercise. The dynamic difficulty coefficient is the ratio of the number of errors and the total number of times tested according to the practice. The fixed difficulty coefficient is based on experience. Determine the difficulty factor, which corresponds to the different levels of the student's hierarchy.
The teaching method according to claim 2, wherein the learning document learning step specifically comprises:

First learn the learning objectives;

After the learning target learning is completed, at least one learning content in the student learning document is started to be learned, and the learning content may include text content, image content, video content, and audio content, and the learning content may be distinguished according to the course section;

After each learning content is completed or after a plurality of learning contents are completed, the test is conducted in the test section of the student aid document, which is usually a test in the form of a section;

After the student's learning task is completed, the entire section of the course has been tested for overall testing to achieve self-assessment of the entire learning process.
The teaching method according to claim 2, wherein said learning process monitoring step comprises:

When the student conducts the learning task and self-test according to the student aid document, the teacher can view the progress of each student and the average progress of one class in real time through the teacher terminal;

After the learning task and the test are completed, the teacher can view the learning situation of each student through the teacher terminal, the learning situation includes the time the student stays on each page, the time for completing each question, and the comparison with the set time. As a result, the test results, the correspondence between the test problems and the page time, and the problems in the class.
A teaching method according to any one of claims 3-5, further comprising:

The real-time recording steps in the classroom, in the process of group teaching and coaching, the system records the classroom teaching process in real time;

The history course review steps, after the completion of the classroom teaching process, students can log in to the system to access the recorded course data remotely after class, for learning and review;

The student document save step, save the student aid document sent by the teacher to the student, and form a student record;

The error-recording automatic recording step saves and records the wrong questions during the learning period including the learning document, and forms a wrong record; here, the wrong question may also be a question that the student considers to be more important during the learning period. ;

In the student documentation review step, students can access historical student documentation records and repeat learning at any time via the Internet.
The teaching method of claim 6, wherein the classroom real-time recording step further comprises:

- Get each course ID;

- generate a file identification ID;

- collecting audio and video streams and motion streams;

- fragmentation of the collected audio and video streams and motion streams;

- storage of the collected audio and video streams and the action stream of the teacher terminal;

- generating a timestamp identifier;

- data transmission encryption;

- According to the course ID, audio and video stream clips, motion stream clips, each course is independently data cached and queued and synchronized multiple processes to achieve data stream batch processing.
The teaching method of claim 7, wherein the classroom real-time recording step further comprises:

- The data receiving gateway performs multi-process queue data verification, including starting multi-process, each process carrying thousands of real-time courses and queuing at the same time to realize real-time data return and distribution;

- the course ID, the file identification ID, the timestamp, and the action stream are stored in an encrypted manner in the database server of the data server;

- audio and video streams are data queuing verified by the data receiving gateway;

- the audio and video stream, the file identification ID, the timestamp, and the course ID are encrypted and stored in the disk array of the data server; wherein

The data server includes a database server and a disk array.
The teaching method of claim 8, wherein the classroom real-time recording step further comprises:

The database server forms a data identification record for data storage and on-demand review.
The teaching method according to claim 8, wherein said fragmentation processing:

For the audio and video stream, set a fixed size of each audio and video stream into a segment, and combine the data stream segments with the course ID, the current course time generated by the current time of the course, and the file path of the file storage to construct a data stream. A table of correspondence between the clip and the current course.
The teaching method according to claim 10, wherein:

Split into a segment when the data stream does not reach the set fixed size value within 10 seconds or 20 seconds;

Each piece of data to be stored generates an encrypted string that is stored in the curriculum of the database in the database server.
The teaching method according to claim 8, wherein:

The data verification mechanism is used to compare the audio and video streams and the action stream. When the data is abnormal during the verification phase, the data exception processing process is started, and the teacher or the student client communicates to compare the time stamp and the comparison data stream. Synchronous retransmission is implemented for the abnormal single timestamp data, and the supplementary data covers the current abnormal data.
The teaching method according to claim 12, wherein said data verification mechanism comprises:

The first verification, for the real-time recorded audio and video stream and the action stream, is first compared with the corresponding data buffered by the terminal at the time of transmission, and when the data is abnormal, the data corresponding to the timestamp corresponding to the local buffer is automatically transmitted to the data receiving. Gateway

The second check, after receiving the action flow, the data receiving gateway performs an action flow check;

The third check, after receiving the audio and video stream, the data receiving gateway performs audio and video stream verification.
The teaching method according to claim 13, wherein said second verification comprises:

By decrypting the action flow and performing motion flow verification on the decrypted data through a standard specification protocol, when the data is abnormal, the action flow data is automatically corrected to realize distribution and storage, thereby realizing effective and consistent action flow;

After decryption, if the data is found to be empty or cannot be corrected, it is automatically compared with the local cache data of the teacher terminal to implement the supplemental transmission;

If the local cache of the teacher terminal is consistent with the data, it is not processed and stored in the data server, and each action flow is associated with the course ID and the current time of the course, and is used to form a course on-demand during the on-demand review;

Each action of the multimedia operation has a standard specification protocol, and both the action sender and the action receiver are required to comply with the standard specification protocol.
The teaching method according to claim 13, wherein said third verification comprises:

Set the abnormal standard of the audio and video stream, the non-abnormal standard file size, and perform an abnormal file size comparison for each audio and video stream;

Audio and video watermarking is added to the audio and video recording process, and the watermark comparison is implemented by a standard watermarking algorithm to confirm whether the audio and video stream is complete and effective;

When the audio and video stream is found to be abnormal, it is automatically compared with the local cache data of the teacher terminal to implement the supplemental transmission;

When the local cache of the terminal client is consistent with the data, it is not processed and stored in the corresponding disk path of the data server, each audio and video stream. Both are associated with the course ID and the current time of the course, and are used to form a course on demand when on-demand review.
An internet teaching system includes a system server, a data server, a teaching terminal, a teacher terminal, a student terminal, and a teaching process data collecting device. The teaching process data includes an audio and video stream and an action stream, and is characterized by:

The teaching terminal is used for the teaching client of the teacher login system, and can implement the calling and operation of the system's problem editing module and the question bank management module;

The teacher terminal, used for the teacher client of the teacher login system, can implement the call and operation of the course recording module of the system;

The student terminal, which is used for the student client of the student login system, can implement the calling and operation of the historical course review module of the system;

The problem editing module is used for editing the exercises. The content of the exercises includes the exercises themselves, the answers to the exercises, the detailed explanations of the exercises, and various attribute labels of the exercises, and the edited exercises will be stored in the question bank management module;

The question bank management module is configured to store and manage the edited exercises, and automatically generate test papers or exercise questions according to the given knowledge points or the learned chapters according to the user request or other module requirements, and is used to give the students self-study after class. Test, and self-test, students can also view the correct answers and detailed analysis of each topic after completing the exercises;

The course recording module, in the teacher teaching process, the course recording module starts recording the course, and saves and transmits the recorded course data to the cloud storage device;

The history course review module stores the course data recorded by the course recording module on a cloud storage device or a data server, and the student can log in to the student client through the ID to perform review playback.
The internet teaching system according to claim 16 wherein:

The teaching terminal can also implement the calling and operation of the auxiliary document editing module of the system;

The teacher terminal can also implement the calling and operation of the system's student aid document distribution module, the course monitoring module, the intelligent grouping module, and the grouping teaching module;

The teacher terminal can also implement the calling and operation of the system's class module, group listening module, and student documentation review module.
The internet teaching system according to claim 17, wherein:

The auxiliary document editing module is configured to edit the learning objectives, learning tasks, and course test questions of the course into a helper document;

The student aid document distribution module is configured to obtain a list of student aid documents, select a student aid document to be sent to a class of students or send to a certain class or group of students for online learning;

The course monitoring module is configured to monitor the course of the course, that is, the learning process of the aided student document, the real-time statistical analysis, the real-time view of each student's learning progress, and the learning progress and learning situation of the entire class;

The intelligent grouping module implements grouping of learning levels of the current class according to the statistical analysis result of the course monitoring module, and the grouping can be distinguished according to the level of excellent, medium and difficulty, and provide basis for subsequent group teaching and coaching;

The group teaching module classifies students belonging to the same level to create a new virtual class according to the grouping situation of the intelligent grouping module Level, the teacher will focus on the class and teach relevant knowledge;

The class module is used for the student to learn the assigned student aid document and the automatic judgment and achievement of the test content of the student aid document;

The group listening module is configured to intelligently adapt the grouping of the teacher terminals to realize the grouping of the students;

The student documentation review module is configured to save the student learning documents that have been learned or assigned. The student learning documents can be retained on the student terminal, and the student can log in to the client through the ID for retrospective learning.
The internet teaching system according to claim 18, characterized in that:

When editing the exercises, add a fixed difficulty coefficient and a dynamic difficulty coefficient to each exercise. The dynamic difficulty coefficient is the ratio of the number of errors and the total number of times tested according to the practice. The fixed difficulty coefficient is based on experience. Determined difficulty factor;

The editing module is a web editing module, and the content of the learning aid document includes a text file, an audio file, a video file, and/or a picture file.
The internet teaching system according to claim 17, wherein:

The student terminal can also call the extra-curricular document module, including the content of all the sections and the superior knowledge of the subject, and the students can read and learn online and expand the knowledge.
According to the Internet teaching system of claim 18, the specific steps of the classroom real-time recording module include:

- Get each course ID;

- generate a file identification ID;

- collecting audio and video streams and motion streams;

- fragmentation of the collected audio and video streams and motion streams;

- storage of the collected audio and video streams and the action stream of the teacher terminal;

- generating a timestamp identifier;

- data transmission encryption;

- According to the course ID, audio and video stream clips, motion stream clips, each course is independently data cached and queued and synchronized multiple processes to achieve data stream batch processing.
The teaching system of claim 21, wherein said classroom real time recording step further comprises:

- The data receiving gateway performs multi-process queue data verification, including starting multi-process, each process carrying thousands of real-time courses and queuing at the same time to realize real-time data return and distribution;

- the course ID, file identification ID, timestamp, and action stream are associated and encrypted and stored in the database server of the data server;

- audio and video streams are data queuing verified by the data receiving gateway;

- The audio and video stream, file identification ID, timestamp, and course ID are encrypted and stored in the disk array of the data server.
The teaching system of claim 22, wherein said classroom real time recording step further comprises:

The database server forms a data identification record for data storage and on-demand review.
The teaching system of claim 23 wherein:

If the Internet cannot obtain the request, only the local storage of the teacher terminal is performed. After the Internet is restored, the re-delivery mechanism is activated, and the multimedia gateway batch processing and data verification return transmission are implemented, and stored in the cloud server.
The teaching system of claim 21 wherein:

For the fragmentation of audio and video streams, set the fixed size of each audio and video stream into a segment, and combine these data stream segments with the course ID, the current course time generated by the current time of the course, and the file path of the file storage. A table of correspondence between data stream segments and the current course.
The teaching system of claim 25 wherein:

Split into a segment when the data stream does not reach the set fixed size value within 10 seconds or 20 seconds.
The teaching method according to claim 22, wherein:

The data verification mechanism is used to compare the audio and video streams and the action stream. When the data is abnormal during the verification phase, the data exception processing process is started, and the teacher or the student client communicates to compare the time stamp and the comparison data stream. Synchronous retransmission is implemented for the abnormal single timestamp data, and the supplementary data covers the current abnormal data.
The teaching system of claim 27, wherein said data verification mechanism comprises:

The first verification, for the real-time recorded audio and video stream and the action stream, is first compared with the corresponding data buffered by the terminal at the time of transmission, and when the data is abnormal, the data corresponding to the timestamp corresponding to the local buffer is automatically transmitted to the data receiving. Gateway

The second check, after receiving the action flow, the data receiving gateway performs an action flow check;

The third check, after receiving the audio and video stream, the data receiving gateway performs audio and video stream verification.
The teaching system of claim 28, said second verification comprising:

By decrypting the action flow and performing motion flow verification on the decrypted data through a standard specification protocol, when the data is abnormal, the action flow data is automatically corrected to realize distribution and storage, thereby realizing effective and consistent action flow;

After decryption, if the data is found to be empty or cannot be corrected, it is automatically compared with the local cache data of the teacher terminal to implement the supplemental transmission;

If the local cache of the teacher terminal is consistent with the data, it is not processed and stored in the data server, and each action flow is associated with the course ID and the current time of the course, and is used to form a course on-demand during the on-demand review;

Each action of the multimedia operation has a standard specification protocol, and both the action sender and the action receiver are required to comply with the standard specification protocol.
The teaching system of claim 28, said third verification comprising:

Set the abnormal standard of the audio and video stream, the non-abnormal standard file size, and perform an abnormal file size comparison for each audio and video stream;

Audio and video watermarking is added to the audio and video recording process, and the watermark comparison is implemented by a standard watermarking algorithm to confirm whether the audio and video stream is complete and effective;

When the audio and video stream is found to be abnormal, it is automatically compared with the local cache data of the teacher terminal to implement the supplemental transmission;

When the local cache of the terminal client is consistent with the data, it is not processed and stored in the corresponding disk path of the data server, and each audio and video stream is The course ID and the current time of the course are linked and used to form a course on demand when on-demand review.