CN112382148A - Internet remote multimedia teaching system - Google Patents

Internet remote multimedia teaching system Download PDF

Info

Publication number
CN112382148A
CN112382148A CN202011347419.6A CN202011347419A CN112382148A CN 112382148 A CN112382148 A CN 112382148A CN 202011347419 A CN202011347419 A CN 202011347419A CN 112382148 A CN112382148 A CN 112382148A
Authority
CN
China
Prior art keywords
student
output end
teacher
module
computer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011347419.6A
Other languages
Chinese (zh)
Inventor
史瑞
陈若木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Douxue Information Technology Co ltd
Original Assignee
Nanjing Douxue Information Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nanjing Douxue Information Technology Co ltd filed Critical Nanjing Douxue Information Technology Co ltd
Priority to CN202011347419.6A priority Critical patent/CN112382148A/en
Publication of CN112382148A publication Critical patent/CN112382148A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09BEDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B5/00Electrically-operated educational appliances
    • G09B5/06Electrically-operated educational appliances with both visual and audible presentation of the material to be studied
    • G09B5/065Combinations of audio and video presentations, e.g. videotapes, videodiscs, television systems
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06QINFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
    • G06Q50/10Services
    • G06Q50/20Education
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09BEDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B5/00Electrically-operated educational appliances
    • G09B5/08Electrically-operated educational appliances providing for individual presentation of information to a plurality of student stations

Landscapes

  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Physics & Mathematics (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Tourism & Hospitality (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Economics (AREA)
  • General Health & Medical Sciences (AREA)
  • Human Resources & Organizations (AREA)
  • Marketing (AREA)
  • Primary Health Care (AREA)
  • Strategic Management (AREA)
  • General Business, Economics & Management (AREA)
  • Electrically Operated Instructional Devices (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)

Abstract

The invention relates to the technical field of video teaching, in particular to an internet remote multimedia teaching system which comprises a teaching computer, a processor, a monitoring computer and a student computer, wherein the output end of the teaching computer is unidirectionally and electrically connected with the input end of the processor; the invention is based on the eyeball tracking technology, can judge the movement of the distraction of students, can give warning and reminding after the distraction of the students, improves the teaching effect of a classroom, and solves the problems that some defects exist in some existing internet remote multimedia teaching systems, and the system can only monitor and cannot remind and warn the students when some students move in class, thereby leading to the great loss of the teaching effect.

Description

Internet remote multimedia teaching system
Technical Field
The invention relates to the technical field of video teaching, in particular to an internet remote multimedia teaching system.
Background
Multimedia teaching is that a multimedia computer is utilized to comprehensively process and control various media information such as symbols, languages, characters, sounds, graphics, images and the like, all elements of the multimedia are organically combined and displayed through a screen or a projector in a projection manner according to teaching requirements, and meanwhile, the teaching or training process is completed by adding the cooperation of the sounds and the human-computer interaction operation between a user and the computer according to the requirements. Therefore, multimedia teaching generally refers to computer multimedia teaching, which is a combination of multiple media implemented by a computer, and has the characteristics of interactivity, integration, controllability and the like, and is only one of the multiple media. It uses computer technology, network technology, communication technology and scientific standard management to integrate, integrate and fully digitize all information resources related to learning, teaching, scientific research, management and life service, so as to form unified user management, unified resource management and unified authority control.
However, some existing internet remote multimedia teaching have some drawbacks, although the system can monitor the action of each student, teachers cannot observe each student in real time, and when some students are distracted in class, the system can only monitor and cannot remind and warn the students, so that the teaching effect is greatly reduced.
Disclosure of Invention
The invention aims to provide an internet remote multimedia teaching system, which is based on an eyeball tracking technology, can judge the distracting actions of students, and can give warnings and reminders after the distracting actions of the students, so that the teaching effect of a classroom is improved, and the problems that some existing internet remote multimedia teaching systems have some defects, and when some students are distracting in the class, the system can only monitor and cannot give reminders and warnings to the students, so that the teaching effect is greatly reduced are solved.
In order to achieve the purpose, the invention provides the following technical scheme: an internet remote multimedia teaching system comprises a teaching computer, a processor, a monitoring computer and a student computer, wherein the output end of the teaching computer is in one-way electric connection with the input end of the processor, the monitoring computer comprises a sound output module, an image output module and a teacher alarm, the output end of the processor is in one-way electric connection with the sound output module, the image output module and the input end of the teacher alarm respectively, the output end of the processor is in two-way electric connection with a main server, the output end of the main server is in two-way electric connection with a processing module, the student computer comprises a lesson listening unit, a student microphone, a student camera and a student alarm, the output end of the processing module is in one-way electric connection with the lesson listening unit and the input end of the student alarm respectively, the output ends of the student microphone and the student camera are in one-way electric connection with, the one-way electricity of output of student's camera is connected with eyeball tracking system, eyeball tracking system's the one-way electricity of output is connected with the counter, the output of counter is connected with processing module's the one-way electricity of input.
Preferably, the teaching computer includes teacher's microphone and teacher's camera, and the output of teacher's microphone and teacher's camera all is connected with the input one-way electricity of treater.
Preferably, the lecture listening unit comprises a sound playing module, an image playing module and a lecture display module, and the output end of the processing module is respectively and unidirectionally electrically connected with the input ends of the sound playing module, the image playing module and the lecture display module.
Preferably, the student alarm and the teacher alarm are any one of an alarm lamp, a buzzer or an audible and visual alarm.
Preferably, the output end of the main server is electrically connected with a local storage device in a bidirectional manner, and the local storage device is a storage server.
Preferably, the output end of the main server is electrically connected with a transmission port in a bidirectional manner, and the output end of the transmission port is electrically connected with a network server in a bidirectional manner.
Preferably, the counter is matched with a setting port, and the output end of the setting port is in bidirectional electric connection with the input end of the counter.
Preferably, the model of the teacher camera is DS-U11, and the model of the student camera is HD 98.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention is based on the eyeball tracking technology, can judge the movement of the distraction of students, and can give warning and reminding after the distraction of the students, thereby improving the teaching effect in class, solving the defects of the prior internet remote multimedia teaching system, and solving the problem that the teaching effect is greatly reduced because the system can only monitor and cannot remind and warn the students when some students are distracted in class;
2. through the arrangement of the teacher microphone and the teacher camera, images and sounds of the teaching content of the teacher can be recorded through the matching use of the teacher microphone and the teacher camera, and the students can be provided with audio-visual multimedia teaching;
3. through local storage device's setting, the teaching carries out the in-process, local storage device is all typeeed to teaching content and student's speech and listening situation, so that teacher or student inquire teaching content or classroom performance at any time, the help student reviews, perhaps the teacher looks over student's learning effect, setting through transmission port and network server, main server is when receiving teaching content and student performance, not only can upload to local storage device, also can upload to the network simultaneously, so that the teaching worker or the student in other areas look over classroom content, setting through setting up the port, it makes things convenient for the education worker to set up and change the counter.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a partial system block diagram of the present invention;
fig. 3 is a system block diagram of the lecture attending unit 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. 1-3, an internet remote multimedia teaching system comprises a teaching computer, a processor, a monitoring computer and a student computer, wherein the output end of the teaching computer is unidirectionally and electrically connected with the input end of the processor, the monitoring computer comprises a sound output module, an image output module and a teacher alarm, the output end of the processor is unidirectionally and electrically connected with the sound output module, the image output module and the input end of the teacher alarm respectively, the output end of the processor is bidirectionally and electrically connected with a main server, the output end of the main server is bidirectionally and electrically connected with a processing module, the student computer comprises a lesson listening unit, a student microphone, a student camera and a student alarm, the output end of the processing module is unidirectionally and electrically connected with the input ends of the lesson listening unit and the student alarm respectively, the output ends of the student microphone and the student camera are unidirectionally and electrically connected with, the one-way electricity of output of student's camera is connected with eyeball tracker, eyeball tracker's the one-way electricity of output is connected with the counter, the output of counter is connected with processing module's the one-way electricity of input, this system is based on eyeball tracker technique, it can judge the action of the student of moving about, can warn and remind after the student moves about simultaneously, promote the teaching effect in classroom, it has some drawbacks to have solved some present long-range multimedia teaching systems in internet, some students are when the action of moving about in class appearing, the system only can monitor, and can't remind and warn the student, and then lead to the problem that the teaching effect discounted greatly.
In this embodiment, the teaching computer includes teacher's microphone and teacher's camera, and the output of teacher's microphone and teacher's camera all is connected with the one-way electricity of the input of treater, and through the setting of teacher's microphone and teacher's camera, image and the sound that can input teacher's lecture content are used in their cooperation to bring the multimedia teaching of sound and feelings for the student.
In this embodiment, the unit of listening to lessons includes sound broadcast module, image broadcast module and lecture notes display module, and processing module's output is connected with sound broadcast module, image broadcast module and lecture notes display module's input one-way electricity respectively, through sound broadcast module, image broadcast module and lecture notes display module, and they can play image and sound in the teaching content, and the student can combine the lecture notes to watch simultaneously, helps the student to understand the teaching content.
In this embodiment, student's alarm and teacher's alarm are any one of alarm lamp, humming ware or audible-visual annunciator, through student's alarm and teacher's alarm's setting for this system can carry out physics and report to the police, is used for reminding the teacher, and warns the student.
In this embodiment, the two-way electricity of main server's output is connected with local storage device, and local storage device is storage server, and through the setting of local storage device, the teaching carries out the in-process, and local storage device is all input to the speech and the listening situation of teaching content and student to teacher or student inquire teaching content or classroom performance at any time, help the student to review, perhaps the teacher looks over student's learning effect.
In this embodiment, the two-way electricity of main server's output is connected with the transmission port, and the two-way electricity of output of transmission port is connected with network server, and through transmission port and network server's setting, main server is when receiving teaching content and student's performance, not only can upload to local storage device, also can upload simultaneously to the network, so that the teaching worker or the student in other areas look over the classroom content.
In this embodiment, the counter cooperation is used and is set up the port, and sets up the output of port and the two-way electricity of the input of counter and be connected, and through setting up the setting of port, it makes things convenient for educator to set up and change the counter.
In the embodiment, the model of the teacher camera is DS-U11, and the model of the student camera is HD 98.
The working principle is as follows: when the teaching device works, firstly, a teacher enters the class through a teacher camera and a teacher microphone, then the class content is converted into data by a processor and transmitted to a main server, then the main server simultaneously transmits the data of the class content to a body storage device, a network server and a processing module, when the processing module receives the data, the data is transmitted to a class listening unit and is respectively converted into sound information and image information by a sound playing module and an image playing module of the class listening unit, a student knows the teaching content through the sound information and the image information, and meanwhile, a lecture display module of the class listening unit displays the relevant lecture of the class content so that the student can understand the class content; in the course of student listening to class, student camera and student microphone can record the speech sound and head action of student in class, then student camera and student microphone can real-time transmit the recorded information to processing module, and the processing module can convert the information into data and transmit it to main server, at the same time the main server can transmit said data to main body storage equipment, network server and processor, then the processor can respectively transmit the data to sound output module and image output module, the sound output module and image output module can receive the speech sound and head action of student in class, so that it is convenient for teacher to real-time monitor student listening state, student camera can simultaneously transmit the recorded action to eyeball tracking system, and eyeball tracking system can observe student eye action and judge that student's sight line is on the screen of computer, when the sight of student is outside the computer screen, eyeball tracker just transmits the signal for the counter, the number of times is noted by the counter, the sight of this student is tracked outside the computer screen when eyeball tracker many times, and when exceeding the limited number of times that the counter set up, the counter just transmits the signal for processing module, processing module control student alarm reports to the police afterwards, for warn and remind the student, and make the student improve attention, processing module turns into data transmission with the processing result and gives main server simultaneously, transmit for the treater by main server afterwards, the treater control teacher alarm reports to the police this moment, remind the teacher to have the student to be in the short course, the teacher can look over the student of the short course through the supervisory control computer afterwards.
The eyeball tracking technology is a scientific application technology, firstly, tracking is carried out according to the eyeball and the characteristic change around the eyeball, secondly, tracking is carried out according to the angle change of the iris, and thirdly, light beams such as infrared rays and the like are actively projected to the iris to extract the characteristics. The eyeball tracking technology is an important technology for modern psychological research and is widely applied to the fields of experimental psychology, applied psychology, engineering psychology, cognitive neuroscience and the like. When the eyes of a person look at different directions, the eyes can slightly change, the changes can generate extractable features, and the computer can extract the features through image capturing or scanning, so that the changes of the eyes can be tracked in real time, the state and the demand of a user can be predicted, the response is carried out, and the purpose of controlling the equipment by the eyes is achieved. The main equipment of the eyeball tracking technology comprises infrared equipment and image acquisition equipment. In the aspect of precision, the infrared projection mode has a great advantage, can be accurate to within 1 cm on a 30-inch screen, and can replace a mouse and a touch pad to some extent to perform limited operations by means of technologies such as blink recognition and gaze recognition. In addition, other image acquisition devices, such as a camera on a computer or a mobile phone, can also realize eyeball tracking under the support of software, but have differences in accuracy, speed and stability. The development of eye tracking technology has presented many difficulties. For example, it is not easy to make a machine effectively recognize the true intention of a human eye to move to determine whether it is an involuntary movement or a conscious change. Therefore, the technology is difficult to become a main mode of human and machine interaction in a short time, but the technology is a good supplement for relatively mature human-computer interaction such as mouse, keyboard, touch and the like, and has wide application prospects in the fields of medical health, online education, psychological research, criminal investigation and the like.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. The utility model provides an internet long-range multimedia teaching system, includes teaching computer, treater, supervisory control computer and student's computer, its characterized in that: the output end of the teaching computer is in one-way electric connection with the input end of the processor, the monitoring computer comprises a sound output module, an image output module and a teacher alarm, the output end of the processor is in one-way electric connection with the sound output module, the image output module and the input end of the teacher alarm respectively, the output end of the processor is in two-way electric connection with a main server, the output end of the main server is in two-way electric connection with a processing module, the student computer comprises a lesson listening unit, a student microphone, a student camera and a student alarm, the output end of the processing module is in one-way electric connection with the lesson listening unit and the input end of the student alarm respectively, the output ends of the student microphone and the student camera are in one-way electric connection with the input end of the processing module, and the output end of, the output end of the eyeball tracking system is unidirectionally and electrically connected with a counter, and the output end of the counter is unidirectionally and electrically connected with the input end of the processing module.
2. The internet remote multimedia teaching system of claim 1, wherein: the teaching computer includes teacher's microphone and teacher's camera, and the output of teacher's microphone and teacher's camera all is connected with the one-way electricity of the input of treater.
3. The internet remote multimedia teaching system of claim 1, wherein: the lecture listening unit comprises a sound playing module, an image playing module and a lecture display module, and the output end of the processing module is respectively and unidirectionally electrically connected with the input ends of the sound playing module, the image playing module and the lecture display module.
4. The internet remote multimedia teaching system of claim 1, wherein: the student alarm and the teacher alarm are any one of alarm lamps, buzzers or audible and visual alarms.
5. The internet remote multimedia teaching system of claim 1, wherein: the output end of the main server is electrically connected with a local storage device in a bidirectional mode, and the local storage device is a storage server.
6. The internet remote multimedia teaching system of claim 1, wherein: the output end of the main server is electrically connected with a transmission port in a bidirectional mode, and the output end of the transmission port is electrically connected with a network server in a bidirectional mode.
7. The internet remote multimedia teaching system of claim 1, wherein: the counter is matched with a setting port, and the output end of the setting port is in bidirectional electric connection with the input end of the counter.
8. The internet remote multimedia teaching system of claim 2, wherein: the model of teacher's camera is DS-U11, the model of student's camera is HD 98.
CN202011347419.6A 2020-11-26 2020-11-26 Internet remote multimedia teaching system Pending CN112382148A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011347419.6A CN112382148A (en) 2020-11-26 2020-11-26 Internet remote multimedia teaching system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011347419.6A CN112382148A (en) 2020-11-26 2020-11-26 Internet remote multimedia teaching system

Publications (1)

Publication Number Publication Date
CN112382148A true CN112382148A (en) 2021-02-19

Family

ID=74588571

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011347419.6A Pending CN112382148A (en) 2020-11-26 2020-11-26 Internet remote multimedia teaching system

Country Status (1)

Country Link
CN (1) CN112382148A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114419861A (en) * 2022-01-20 2022-04-29 牡丹江师范学院 English intelligent teaching auxiliary system for teaching based on Internet university
CN115019570A (en) * 2021-03-03 2022-09-06 北京七鑫易维信息技术有限公司 Intelligent teaching system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204904618U (en) * 2015-09-11 2015-12-23 上海猎程网络科技有限公司 Long -range multimedia teaching system based on internet
CN106933367A (en) * 2017-03-28 2017-07-07 安徽味唯网络科技有限公司 It is a kind of to improve student and attend class the method for notice
CN106952200A (en) * 2017-03-28 2017-07-14 安徽味唯网络科技有限公司 A kind of method that internet teaching supervises student
WO2018223523A1 (en) * 2017-06-08 2018-12-13 深圳市科迈爱康科技有限公司 Educational robot
CN111563702A (en) * 2020-06-24 2020-08-21 重庆电子工程职业学院 Classroom teaching interactive system
CN211787619U (en) * 2020-05-14 2020-10-27 刘班 Remote education and teaching system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204904618U (en) * 2015-09-11 2015-12-23 上海猎程网络科技有限公司 Long -range multimedia teaching system based on internet
CN106933367A (en) * 2017-03-28 2017-07-07 安徽味唯网络科技有限公司 It is a kind of to improve student and attend class the method for notice
CN106952200A (en) * 2017-03-28 2017-07-14 安徽味唯网络科技有限公司 A kind of method that internet teaching supervises student
WO2018223523A1 (en) * 2017-06-08 2018-12-13 深圳市科迈爱康科技有限公司 Educational robot
CN211787619U (en) * 2020-05-14 2020-10-27 刘班 Remote education and teaching system
CN111563702A (en) * 2020-06-24 2020-08-21 重庆电子工程职业学院 Classroom teaching interactive system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115019570A (en) * 2021-03-03 2022-09-06 北京七鑫易维信息技术有限公司 Intelligent teaching system
CN114419861A (en) * 2022-01-20 2022-04-29 牡丹江师范学院 English intelligent teaching auxiliary system for teaching based on Internet university

Similar Documents

Publication Publication Date Title
US20210343171A1 (en) Systems and methods for monitoring learner engagement during a learning event
CN109727167B (en) Teaching auxiliary system
Hutt et al. Gaze-Based Detection of Mind Wandering during Lecture Viewing.
JP2009258175A (en) Lecture system and tabulation system
CN108492648A (en) A kind of remote online teaching student's state determines method and system
CN104464406A (en) Real-time interactive online learning platform
CN109086693B (en) Detection technology for on-line teaching learning attention
CN112382148A (en) Internet remote multimedia teaching system
Alepis et al. Object-oriented user interfaces for personalized mobile learning
CN202948595U (en) Touch type intelligent desk teaching system
Kim et al. Take-over requests after waking in autonomous vehicles
CN110742404A (en) Device and method for protecting eyesight of students during learning
CN117037552A (en) Intelligent classroom interaction system and method
Ab Aziz et al. Awareness and readiness of Malaysian university students for emotion recognition system
Yang et al. Dyadic joint visual attention interaction in face-to-face collaborative problem-solving at K-12 Maths Education: A Multimodal Approach
CN109886255A (en) A kind of intelligent interaction tutoring system with facial emotions identification function
CN109447050A (en) A kind of Online class user emotion visualization system
CN113570484B (en) Online primary school education management system and method based on big data
WO2023079370A1 (en) System and method for enhancing quality of a teaching-learning experience
CN207883151U (en) A kind of new education system
Cap et al. Tweedback goes Smart Watch—Why Classroom Response Systems Need Smart Watch User Interfaces
Yu et al. Application of psychological counseling system based on virtual reality technology in college students' psychological counseling
Van Helvert et al. Observing, coaching and reflecting: A multi-modal natural language-based dialogue system in a learning context
KR20150066779A (en) Wearable apparatus for learning and System supporting learning including the same
Hossen et al. Attention monitoring of students during online classes using XGBoost classifier

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20210219

RJ01 Rejection of invention patent application after publication