CN104410834A - Intelligent switching method for teaching videos - Google Patents
Intelligent switching method for teaching videos Download PDFInfo
- Publication number
- CN104410834A CN104410834A CN201410733819.9A CN201410733819A CN104410834A CN 104410834 A CN104410834 A CN 104410834A CN 201410733819 A CN201410733819 A CN 201410733819A CN 104410834 A CN104410834 A CN 104410834A
- Authority
- CN
- China
- Prior art keywords
- trigger event
- real
- courseware
- time video
- flow data
- 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
Links
Landscapes
- Closed-Circuit Television Systems (AREA)
Abstract
The invention provides an intelligent switching method for teaching videos. The intelligent switching method comprises the following steps: obtaining real-time video stream data, wherein each piece of real-time video stream data corresponds to one or more trigger mark events for triggering the real-time video stream data; playing and displaying the real-time video stream data corresponding to one marked trigger mark event by default, wherein the marked trigger mark event is included in the trigger mark events; setting a priority for the trigger mark events; switching the current played and displayed video stream data to the real-time video stream data corresponding to the trigger mark events which immediately happen when the one or more trigger mark events immediately happen. According to the intelligent switching method, a plurality of images can be freely switched and a relatively good video editing effect can be achieved without manual operation.
Description
Technical field
The present invention relates to field of video processing, mainly refer to the processing technology field for real-time online video, more specifically, particularly relate to a kind of intelligent switch method of instructional video.
Background technology
Along with the development of electronic information technology, the technology application of video is more and more extensive.In the technology of this block of editing of video, existing technology has reached a quite ripe stage, but at this block of editing to real-time online video, is not also special outstanding.
In teaching instantly, the application of video technique is also more and more extensive, such as, in remote teaching, some course recorded broadcasts is got off in advance, and uploads to online after carrying out editing process, for the people's study needing distance learning or Online Video study.This mode generally comes on the internet, and this is also the common practice of video study websites a lot of at present.But these are through the instructional video of editing process, be not directly just upload to online afterwards in recording, but needs carry out editing process in advance and upload to online after editing.In addition, it also depends on on-the-spot recording personnel to the operation of video recording equipment, such as follows the trail of the motion direction of teacher and in time carries out focus switching etc.
In teaching classroom, teacher be often in mobile in, and in order to meet the requirement of instructional video, also need according to real-time condition, by the camera lens that furthers of video to blackboard to show the content of courses etc.That is, the recording that complete an instructional video not only needs the manual operation of studio to control, and also may need the editing process that the later stage is artificial.This adds the cost that instructional video makes virtually, simultaneously very very long and complicated that also show of the manufacturing process of instructional video.
Therefore, when making instructional video, the operator of this area attempts to wish to find a kind of recorded broadcast process that automatically can realize instructional video, thus improves the efficiency of video production and reduce its cost.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of intelligent switch method of instructional video, for solving in prior art the control and process that need in instructional video recording process artificially to participate in video pictures switching, thus make its manufacturing process comparatively time-consuming and the problem of Expenses Cost.
For achieving the above object and other relevant objects, the invention provides following technical scheme:
An intelligent switch method for instructional video, shown method comprises: obtain multiple real-time video flow data, and each real-time video flow data correspond to few one for triggering the triggering characteristic events of this real-time video flow data; Acquiescence plays a display wherein real-time video flow data corresponding to triggering characteristic events marked, and the triggering characteristic events of described mark is included in described triggering characteristic events; Priority is arranged to described triggering characteristic events; When the one or more triggering characteristic events of instant generation, the current video stream data playing display is switched to the real-time video flow data corresponding to triggering characteristic events of described instant generation.
Preferably, in the intelligent switch method of above-mentioned instructional video, described triggering characteristic events at least comprises teacher's trigger event, student's trigger event and courseware trigger event, wherein, described teacher's trigger event is that object moves in parallel behavior, described student's trigger event is the vertical mobile behavior of object, and described courseware trigger event is teacher's courseware computer screen change behavior.
More preferably, for the further optimization of the intelligent switch method preferred version of above-mentioned instructional video, the priority of described teacher's trigger event is higher than described student's trigger event and courseware trigger event, and described student's trigger event and courseware trigger event are same priority.
More preferably, for the further optimization of the intelligent switch method preferred version of above-mentioned instructional video, the live video stream data exchange according to described teacher's trigger event, student's trigger event and courseware trigger event described acquiescence being play display to described instant generation triggering characteristic events corresponding to real-time video flow data time, the concrete grammar of the real-time video flow data corresponding to the triggering characteristic events that the current video stream data playing display is switched to described instant generation for: acquiescence plays the real-time video flow data corresponding to display teacher trigger event; Detect and whether have described student's trigger event and courseware trigger event to occur: if there is one of them triggered mark event of described student's trigger event and courseware trigger event to occur, then play the described student's trigger event of display or the real-time video flow data corresponding to courseware trigger event; If described student's trigger event and courseware trigger event occur simultaneously, then by the current real-time video flow data of live video stream data exchange extremely corresponding to described teacher's trigger event playing display.
In sum, technology beneficial effect of the present invention is: multipair for teacher real-time video flow data of answering is preset as default frame, and when student stands up, intelligent-tracking video camera detects student's action, namely meet trigger condition, thus switch the real-time video flow data of display corresponding to student; In addition, if teacher's rolling mouse or remote-control computer courseware, This move makes teacher's courseware computer screen change, and now picture is switched to the multipair real-time video flow data of answering of courseware, thus achieves freely switching of multiple picture, reach the effect of intelligent editing, and manual operation need not can reach good video clipping effect, save the labour cost that later stage editing consumes, also save the time simultaneously, easy and simple to handle, make video clipping simply convenient.
Accompanying drawing explanation
Fig. 1 is shown as the flow chart of intelligent switch method a kind of execution mode in an embodiment of instructional video of the present invention.
Fig. 2 is shown as the flow chart of intelligent switch method another execution mode in an embodiment of instructional video of the present invention.
Fig. 3 is shown as in the intelligent switch method of described instructional video the process principle figure carrying out intelligence and switch.
Drawing reference numeral explanation
S10-S70 method step
S10 '-S70 ' method step
S701-S7022 method step
Embodiment
Below by way of specific instantiation, embodiments of the present invention are described, those skilled in the art the content disclosed by this specification can understand other advantages of the present invention and effect easily.The present invention can also be implemented or be applied by embodiments different in addition, and the every details in this specification also can based on different viewpoints and application, carries out various modification or change not deviating under spirit of the present invention.It should be noted that, when not conflicting, the feature in following examples and embodiment can combine mutually.
It should be noted that, the diagram provided in following examples only illustrates basic conception of the present invention in a schematic way, then only the assembly relevant with the present invention is shown in graphic but not component count, shape and size when implementing according to reality is drawn, it is actual when implementing, and the kenel of each assembly, quantity and ratio can be a kind of change arbitrarily, and its assembly layout kenel also may be more complicated.
Improving constantly in recent years along with computing power, utilizes computer vision technique to analyze the video information in supervisory control system, process, and becomes the developing direction realizing video intelligent.Video tracking is the basic link of supervisory control system.Its object is the moving target by detecting the sequence of video images analysis of shot by camera, follow the tracks of and locate wherein.According to the number of capture video sequence video camera used, video tracking can be divided into the tracking under single camera and the tracking under multiple-camera.
Multiple-camera vision system utilizes multiple video camera collaborate to monitor whole scene, provides the Global Information of scene.Compared with single camera vision system, multiple-camera vision system has following advantage:
The first, providing of multi-angle information.In the indoor or outdoors scene of complexity, due to environmental limit, as building or blocking of trees or blocking of personage self, it is impossible for only doing monitoring for a long time with a video camera to the moving object in scene.And for same tracking target, multiple-camera then can provide the information of more perspective, even if the information of a certain angle cannot obtain owing to blocking, other angles can provide corresponding information, and merging multi-angle information can solve occlusion issue effectively.Thus making motion detection, tracking waits more reliable.
The second, field range increases.In large-scale scene, the path of the motion of object is often very long, exceeds the field range of single camera.And in scene, settle multiple video camera, by the linking of multiple-camera field range, very large monitoring range can be covered, realize following the tracks of the long distance of moving object, be applicable to the monitoring needs of actual large scene.
Several processes such as multi-camera system video tracking generally involves target following under motion detection, single camera, multiple-camera maps coupling and collaborative.And accordingly, in the prior art field of autotracking video camera, the maturation that its technology and product are suitable, therefore the present invention will based on autotracking video camera, proposes a kind of recording for instructional video or the intelligent clipping method of recorded broadcast in real time.
It should be noted that, the intelligent editing mentioned in the present invention, refer to by switching the automatic induction of multiple real-time monitored picture, and then realize the automatic recording editing of video.In simple terms, whole video monitoring or recorded broadcast process do not need artificial participation, and it can automatically by identifying that the automatic adjustment of the switching of automatic pick-up lens and focal length is carried out in the movement of subject.
Refer to Fig. 1, show the flow chart of the intelligent switch method of a kind of instructional video of the present invention, as shown in the figure, shown method comprises the following steps:
S10, obtains multiple real-time video flow data, and each real-time video flow data correspond to few one for triggering the triggering characteristic events of this real-time video flow data;
S30, acquiescence plays a display wherein real-time video flow data corresponding to triggering characteristic events marked, and the triggering characteristic events of described mark is included in described triggering characteristic events;
S50, arranges priority to described triggering characteristic events;
S70, instant there is one or more triggering characteristic events time, the live video stream data exchange according to the priority arranged described acquiescence being play display to described instant generation triggering characteristic events corresponding to real-time video flow data.
Or can also be adopt alternatively, see Fig. 2, show a kind of another kind of execution mode flow chart of intelligent switch method of instructional video.
Shown method comprises the following steps:
S10 ', obtains multiple real-time video flow data, and each real-time video flow data correspond to few one for triggering the triggering characteristic events of this real-time video flow data;
S30 ', acquiescence plays a display wherein real-time video flow data corresponding to triggering characteristic events marked, and the triggering characteristic events of described mark is included in described triggering characteristic events;
S50 ', arranges priority to described triggering characteristic events;
S70 ', when the one or more triggering characteristic events of instant generation, switches to the real-time video flow data corresponding to triggering characteristic events of described instant generation by the current video stream data playing display.
Concrete, in upper described scheme, described triggering characteristic events at least comprises teacher's trigger event, student's trigger event and courseware trigger event, wherein, described teacher's trigger event is that object moves in parallel behavior, described student's trigger event is the vertical mobile behavior of object, and described courseware trigger event is the change behavior of teacher's courseware computer screen.In addition, can also supplement teacher's trigger event, student's trigger event or courseware trigger event, such as described teacher's trigger event can also comprise teacher's writing on the blackboard behavior, and be a teacher when carrying out writing on the blackboard, intelligent video camera head can automatically trace into writing on the blackboard and show.
This is that to arrange concrete triggering characteristic events be to allow intelligent video camera head to realize the automatic tracking display of real-time video flow data.
Further, the priority of above-mentioned teacher's trigger event is higher than described student's trigger event and courseware trigger event, and described student's trigger event and courseware trigger event are same priority.
Further, see Fig. 3, show in the intelligent switch method of described instructional video the process principle figure carrying out intelligence and switch, according to above-mentioned concrete triggering characteristic events and priority thereof, the described priority according to the arranging live video stream data exchange of described acquiescence being play display to described instant generation triggering characteristic events corresponding to real-time video flow data or the current video stream data playing display is switched to described instant generation triggering characteristic events corresponding to the concrete mode of real-time video flow data be:
S701, acquiescence plays the real-time video flow data corresponding to display teacher trigger event;
Whether S702, detect and have described student's trigger event and courseware trigger event to occur:
S7021, if there is one of them triggered mark event of described student's trigger event and courseware trigger event to occur, then plays the described student's trigger event of display or the real-time video flow data corresponding to courseware trigger event;
S7022, if described student's trigger event and courseware trigger event occur simultaneously, then by the current real-time video flow data of live video stream data exchange extremely corresponding to described teacher's trigger event playing display.
Particularly, for example, in the education activities in classroom, because student is generally seated, and teacher stands and is carrying out writing on the blackboard or mobile speech as the case may be, now, institute of the present invention recorded broadcast display be exactly real-time video flow data corresponding to teacher, if when teacher forwards to and plays PPT courseware or play other coursewares, the picture of the courseware of now institute of the present invention recorded broadcast display, by the picture of automatic switchover recorded broadcast, and carry out automatic focusing according to the intellectual technology of camera, picture is seemed and more cleans; In addition, if during classroom, have student to get up to answer a question, institute so of the present invention recorded broadcast display be exactly real-time video flow data corresponding to student.
In sum, the present invention realizes the automatic recording of instructional video by intelligent video camera head, manual operation need not can reach good video clipping effect, saves the labour cost that later stage editing consumes, also saves the time simultaneously.Easy and simple to handle, make video clipping simply convenient.So the present invention effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.
Claims (4)
1. an intelligent switch method for instructional video, is characterized in that, shown method comprises:
Obtain multiple real-time video flow data, and each real-time video flow data correspond to few one for triggering the triggering characteristic events of this real-time video flow data;
Acquiescence plays a display wherein real-time video flow data corresponding to triggering characteristic events marked, and the triggering characteristic events of described mark is included in described triggering characteristic events;
Priority is arranged to described triggering characteristic events;
When the one or more triggering characteristic events of instant generation, the current video stream data playing display is switched to the real-time video flow data corresponding to triggering characteristic events of described instant generation.
2. the intelligent switch method of instructional video according to claim 1, it is characterized in that, described triggering characteristic events at least comprises teacher's trigger event, student's trigger event and courseware trigger event, wherein, described teacher's trigger event is that object moves in parallel behavior, described student's trigger event is the vertical mobile behavior of object, and described courseware trigger event is teacher's courseware computer screen change behavior.
3. the intelligent switch method of instructional video according to claim 2, it is characterized in that, the priority of described teacher's trigger event is higher than described student's trigger event and courseware trigger event, and described student's trigger event and courseware trigger event are same priority.
4. the intelligent switch method of instructional video according to claim 2, it is characterized in that, when the one or more triggering characteristic events of instant generation, the tool method current video stream data playing display being switched to the real-time video flow data corresponding to triggering characteristic events of described instant generation is:
Acquiescence plays the real-time video flow data corresponding to display teacher trigger event;
Detect and whether have described student's trigger event and courseware trigger event to occur:
If there is one of them triggered mark event of described student's trigger event and courseware trigger event to occur, then play the described student's trigger event of display or the real-time video flow data corresponding to courseware trigger event;
If described student's trigger event and courseware trigger event occur simultaneously, then by the current real-time video flow data of live video stream data exchange extremely corresponding to described teacher's trigger event playing display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410733819.9A CN104410834A (en) | 2014-12-04 | 2014-12-04 | Intelligent switching method for teaching videos |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410733819.9A CN104410834A (en) | 2014-12-04 | 2014-12-04 | Intelligent switching method for teaching videos |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104410834A true CN104410834A (en) | 2015-03-11 |
Family
ID=52648421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410733819.9A Pending CN104410834A (en) | 2014-12-04 | 2014-12-04 | Intelligent switching method for teaching videos |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104410834A (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104822038A (en) * | 2015-04-30 | 2015-08-05 | 广州瀚唐电子科技有限公司 | Recording and broadcasting system and picture switching method thereof |
| CN104917999A (en) * | 2015-06-08 | 2015-09-16 | 深圳锐取信息技术股份有限公司 | Dual video stream directed broadcasting method and system |
| CN105049764A (en) * | 2015-06-17 | 2015-11-11 | 武汉智亿方科技有限公司 | Image tracking method and system for teaching based on multiple positioning cameras |
| CN105578100A (en) * | 2016-03-11 | 2016-05-11 | 国网福建省电力有限公司 | Teaching video system |
| CN105611237A (en) * | 2015-12-22 | 2016-05-25 | 杭州凡龙科技有限公司 | Method for simulating five cameras by utilizing double cameras for education recording and broadcasting |
| CN106878759A (en) * | 2017-02-13 | 2017-06-20 | 广东小天才科技有限公司 | Multi-camera lens switching method and system in teaching live broadcast |
| CN106973250A (en) * | 2017-02-24 | 2017-07-21 | 广州乐庚信息科技有限公司 | The method and device that a kind of video file is automatically generated |
| CN107430629A (en) * | 2015-05-22 | 2017-12-01 | 谷歌公司 | Point priority of vision content in computer presentation is shown |
| CN107507474A (en) * | 2016-06-14 | 2017-12-22 | 广东紫旭科技有限公司 | A kind of long-distance interactive recording and broadcasting system video switching method |
| CN108513081A (en) * | 2017-02-27 | 2018-09-07 | 杭州海康威视数字技术股份有限公司 | A kind of recorded broadcast method, apparatus and system for classroom instruction |
| CN110010164A (en) * | 2018-11-13 | 2019-07-12 | 成都依能科技股份有限公司 | Multi-channel sound video automated intelligent edit methods |
| CN110166841A (en) * | 2019-05-28 | 2019-08-23 | 成都依能科技股份有限公司 | Multi-channel sound video detects real-time method for pushing automatically |
| CN111083397A (en) * | 2019-12-13 | 2020-04-28 | 浙江大华技术股份有限公司 | Recorded broadcast picture switching method, system, readable storage medium and equipment |
| CN113489902A (en) * | 2021-07-02 | 2021-10-08 | 深圳课后帮科技有限公司 | Video shooting method and system |
| CN115474073A (en) * | 2021-06-11 | 2022-12-13 | 上海赛连信息科技有限公司 | Method and device for intelligently switching picture layout |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110169932A1 (en) * | 2010-01-06 | 2011-07-14 | Clear View Technologies Inc. | Wireless Facial Recognition |
| CN202050500U (en) * | 2011-04-08 | 2011-11-23 | 南京汉韬科技有限公司 | Recording and broadcasting device for teaching and training |
-
2014
- 2014-12-04 CN CN201410733819.9A patent/CN104410834A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110169932A1 (en) * | 2010-01-06 | 2011-07-14 | Clear View Technologies Inc. | Wireless Facial Recognition |
| CN202050500U (en) * | 2011-04-08 | 2011-11-23 | 南京汉韬科技有限公司 | Recording and broadcasting device for teaching and training |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104822038A (en) * | 2015-04-30 | 2015-08-05 | 广州瀚唐电子科技有限公司 | Recording and broadcasting system and picture switching method thereof |
| CN107430629B (en) * | 2015-05-22 | 2020-11-17 | 谷歌有限责任公司 | Prioritized display of visual content in a computer presentation |
| CN107430629A (en) * | 2015-05-22 | 2017-12-01 | 谷歌公司 | Point priority of vision content in computer presentation is shown |
| CN104917999A (en) * | 2015-06-08 | 2015-09-16 | 深圳锐取信息技术股份有限公司 | Dual video stream directed broadcasting method and system |
| CN105049764A (en) * | 2015-06-17 | 2015-11-11 | 武汉智亿方科技有限公司 | Image tracking method and system for teaching based on multiple positioning cameras |
| CN105611237A (en) * | 2015-12-22 | 2016-05-25 | 杭州凡龙科技有限公司 | Method for simulating five cameras by utilizing double cameras for education recording and broadcasting |
| CN105578100A (en) * | 2016-03-11 | 2016-05-11 | 国网福建省电力有限公司 | Teaching video system |
| CN105578100B (en) * | 2016-03-11 | 2018-09-25 | 国网福建省电力有限公司 | A kind of Teaching video recording system |
| CN107507474A (en) * | 2016-06-14 | 2017-12-22 | 广东紫旭科技有限公司 | A kind of long-distance interactive recording and broadcasting system video switching method |
| CN106878759A (en) * | 2017-02-13 | 2017-06-20 | 广东小天才科技有限公司 | Multi-camera lens switching method and system in teaching live broadcast |
| CN106973250A (en) * | 2017-02-24 | 2017-07-21 | 广州乐庚信息科技有限公司 | The method and device that a kind of video file is automatically generated |
| CN108513081A (en) * | 2017-02-27 | 2018-09-07 | 杭州海康威视数字技术股份有限公司 | A kind of recorded broadcast method, apparatus and system for classroom instruction |
| CN108513081B (en) * | 2017-02-27 | 2020-12-29 | 杭州海康威视数字技术股份有限公司 | Recording and broadcasting method, device and system for classroom teaching |
| CN110010164A (en) * | 2018-11-13 | 2019-07-12 | 成都依能科技股份有限公司 | Multi-channel sound video automated intelligent edit methods |
| CN110166841A (en) * | 2019-05-28 | 2019-08-23 | 成都依能科技股份有限公司 | Multi-channel sound video detects real-time method for pushing automatically |
| CN111083397A (en) * | 2019-12-13 | 2020-04-28 | 浙江大华技术股份有限公司 | Recorded broadcast picture switching method, system, readable storage medium and equipment |
| CN115474073A (en) * | 2021-06-11 | 2022-12-13 | 上海赛连信息科技有限公司 | Method and device for intelligently switching picture layout |
| CN115474073B (en) * | 2021-06-11 | 2023-12-12 | 上海赛连信息科技有限公司 | Method and device for intelligently switching picture layout |
| CN113489902A (en) * | 2021-07-02 | 2021-10-08 | 深圳课后帮科技有限公司 | Video shooting method and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104410834A (en) | Intelligent switching method for teaching videos | |
| CN104469303A (en) | Intelligent switching method of teaching video | |
| CN104394363B (en) | A kind of Online class director method and system | |
| US10582182B2 (en) | Video capture and rendering system control using multiple virtual cameras | |
| CN105049764B (en) | A kind of geography teaching map based on multiple positioning shooting heads is as tracking and system | |
| JP6412001B2 (en) | System and method for tracking and tagging objects in a broadcast | |
| US20050265580A1 (en) | System and method for a motion visualizer | |
| CN104735416A (en) | Tracking camera, record information acquisition processing live broadcast network teaching system | |
| CN107731032A (en) | A kind of audio-video switching method, device and remote multi-point interactive education system | |
| CN111242962A (en) | Method, device and equipment for generating remote training video and storage medium | |
| US8885022B2 (en) | Virtual camera control using motion control systems for augmented reality | |
| CN103905734A (en) | Method and device for intelligent tracking and photographing | |
| CN105635669A (en) | Movement contrast system based on three-dimensional motion capture data and actually photographed videos and method thereof | |
| CN107452018B (en) | Speaker tracking method and system | |
| CN105578044A (en) | Panoramic view adaptive teacher image analysis method | |
| CN105611237A (en) | Method for simulating five cameras by utilizing double cameras for education recording and broadcasting | |
| CN107809563A (en) | A kind of writing on the blackboard detecting system, method and device | |
| CN104469304A (en) | Intelligent recording and playing system for performance training | |
| CN108766067A (en) | A kind of implementation method in contact classroom | |
| Wulff et al. | LectureSight: an open source system for automatic camera control for lecture recordings | |
| CN102903125A (en) | System and method for detecting moving target under fixed scene | |
| CN111860457A (en) | Fighting behavior recognition early warning method and recognition early warning system thereof | |
| CN101895685A (en) | Video capture control device and method | |
| CN203193774U (en) | Automatic tracing machine based on space grid technology | |
| CN113207008A (en) | AR-based tele-immersive simulation classroom and control method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150311 |
|
| WD01 | Invention patent application deemed withdrawn after publication |