CN108766054A

CN108766054A - A kind of classroom multimedia system and its application method

Info

Publication number: CN108766054A
Application number: CN201810912329.3A
Authority: CN
Inventors: 欧光君
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-08-11
Filing date: 2018-08-11
Publication date: 2018-11-06
Also published as: CN110827583A

Abstract

A kind of classroom multimedia system and its application method, belong to teaching equipment field.It is made of multimedia computer system, projection blank, projector etc., multimedia computer supports multi-display, can extended desktop to projector, demoware runs demonstrator's view, projector runs viewer's view, teacher plays courseware-student with the response of writing on the blackboard response-evaluation of teacher student, and iterative cycles constantly promote.Student uses electronic whiteboard, the two not only technically independently but also in task to cooperate using writing on the blackboard, teacher, and compact interaction has opened up the new situation of multimedia teaching under the support of Radio Transmission Technology.

Description

A kind of classroom multimedia system and its application method

Technical field

A kind of classroom multimedia system and its application method belong to teaching equipment field, more particularly to optimization roles of teachers and students Classroom multimedia system and its application method.

Background technology

Interactive electric whiteboard realizes that teacher's Student oriented is given lessons, becomes modern because having liberated constraint of the computer to teacher The significant equipment in classroom.But existing hidden danger, also gradually it is exposed in face of educator：

1. teacher and student shares a screen, teacher is the operation for carrying out teaching, is interfered to student's study.It is most typical It is exactly：Teacher mixes the content that auxiliary understands together with the content for requiring student to receive and distribute into courseware.With answering for courseware With, class capability sharply increases, and teacher is difficult to write down taught content, be teacher mix auxiliary understanding content the reason of, but it is this Way has obscured really to be required students content and assists the boundary line between student's understanding content, and students hardly possible is increased Degree.Switch also between broadcasting and annotation, frequently call menu etc., all disturbs student's study.

Teacher and student shares a way of presentation, and development of the activity is not got up.Classroom multimedia interaction basic link is main Have：Teacher plays courseware, student shows learning outcome, teacher comments on student's displaying.In these links, interactive electric whiteboard Control generation shift twice, be to be transferred to student from teacher and be transferred to teacher from student successively.Change if student also has Dynamic, teacher changes comment again, then the control right transfer of interactive electric whiteboard circulation primary again.If there is multiple students join It is then frequently shifted with the control of interaction, interactive electric whiteboard.Middle and primary schools' classroom activity is more, interactive electric whiteboard The frequent transfer of control is exaggerated time in classroom waste, moreover, show activity while compactedness requires high, for example calculate Match, or even can not have developed at all.

Before teacher is fixed on electronic whiteboard.Interactive electric whiteboard is the product liberated teacher and fettered by computer, but is taught Teacher only obtains the freedom that interaction formula electronic whiteboard is given lessons or Student oriented is given lessons, and teacher is still bound in electronic whiteboard Before, activity space is limited.Teacher stands high above the masses, and is easy to become estranged the psychological distance with student, is also unfavorable for teacher and understands student's Learn situation.Perhaps, such case is not problem in colleges and universities, but is serious problem in middle and primary schools classroom.

The show activity of student meets with technical difficulty again and again.Interactive electric whiteboard is complicated for operation, for example to be broadcast in courseware It puts and emphasizes to toggle between waiting with annotation, teacher passes through operative skill training, even exists more or less during use Problem.Student does not have trained, especially pupil's mentally defective, expects to annotate, but translates into lower one page of courseware, expect Emphasize, but become to annotate, let alone configure color etc..Even if carrying out, because unskilled, the time also wastes seriously.

Invention content：

Inventor studies and obtains repeatedly, the fundamental problem of the above problem, is to recognize multimedia classroom Ability of Normal School Students role difference It is unclear, cause technological means to lack the specific aim using object, traditional technology means are not integrated into classroom multimedia yet. On the one hand, the classroom pattern based on instruction is the soil that problem is formed, and on the other hand, multimedia technology is strongly professional, is pushed The engineering department of classroom multimedia evolution, and do not know about the real demand of multimedia classroom is that this problem is dragged to the present and does not have long The reason of solution.Therefore, the present invention bases oneself upon the visual angle of classroom interactions, provides a difference roles of teachers and students, reasonable distribution displaying hand Section, fusion traditional technology and modern technologies classroom multimedia system, have be：

1. a kind of classroom multimedia system, including multimedia computer system, the projection blank being fixed on the wall of dais, fixation With the projector of multimedia computer data connection above dais, demoware, demoware demonstration are run on multimedia computer Courseware and other displaying contents, by projector be shown to projection blank on, optionally：

（1）Multimedia computer system supports multi-display, energy extended desktop to projector.

Multi-display can be supported by operating system, can also be realized with specific software, and preferred operations system is supported.With Interactive electric whiteboard shows that identical content is different to replicate Desktop mode, and this programme is using extended desktop mode, more matchmakers The content that body computer is shown is different from the content that projector shows.Multimedia computer shows different content with projector, is more matchmakers Teacher and student is laid a good foundation using private views respectively in body classroom.

（2）Demoware supports demonstrator's view, multimedia computer screen to run demonstrator's view, and projector runs simultaneously Viewer's view, viewer's view are a sub- view of demonstrator's view.

Demoware can be PPT, can also be Kingsoft demonstration etc., preferably PPT.Because software is different, specific title, Function, operation etc. are slightly different.It is directly related with demo content, it just appears in viewer's view, demonstrator's view removes Further include supporting the sub- view of demonstration, such as flow of presentation view outside the sub- view of viewer, annotates view, demo content prompt View etc..Viewer's view do not have electronic whiteboard interactive function, even if gather around be strictly limited in faint level of interaction, and Electronic whiteboard interactive function is the basic function of demonstrator's view, and courseware Row control, annotation are emphasized, demo content prompts Deng all being completed by demonstrator's view.Operating process on demonstrator's view will not interfere the display of viewer's view.

（3）It is also wear-resisting to project blank, supports chalk writing.

Project content mainly has courseware displaying, classroom annotation.The writing on the blackboard of projection blank was both shown according to courseware, also became class The basis of hall annotation.Writing on the blackboard reduces the failure rate of electronic whiteboard technically independently of electronic whiteboard on projection blank.With In interactive electric whiteboard system, blackboard is independent of outside projection blank, writing on the blackboard is different far from projection, and this programme does not repartition black Blackboard and blank are creatively combined into one, traditional writing on the blackboard displaying are integrated into modern classroom multimedia system by plate blank, A reliable way of presentation is not only increased, and can be closely interactive with electronic whiteboard way of presentation, it is mutual for teachers and students' displaying Dynamic middle school student obtain special way of presentation, teachers and students' way of presentation reasonable distribution is laid a good foundation.

2. preferably, multimedia computer setting WHDI transmits wirelessly end.

WHDI wireless receivings end can be independently plugged on projector, can also be built in projector, it is preferable that by it It is built in projector.Multimedia computer has WHDI wireless transmitting terminals, has liberated and has been fixedly connected with projector, power amplifier, teacher Multimedia computer can be placed on mobile dais, leave fixed dais and give lessons.Teacher leaves dais, not only teacher of the shortening Raw psychological distance has also moved out of space for student using projection blank displaying, be student's writing on the blackboard displaying shown with teacher's courseware and The interactive perfect condition of classroom annotation.

3. further preferably, multimedia computer is tablet computer, and WHDI wireless transmitting terminals are built in tablet computer.

Mobile dais relative clumsy, tablet computer can solve the problems, such as this because its screen size is moderate, lighter in weight. It holds tablet computer to give lessons, also incidentally one external WHDI wireless transmitting terminals are with regard to unsuitable, therefore it is required that WHDI is built in In tablet computer.Mobile phone can also realize the function of tablet computer, suitably expand screen and improve input medium, can be used for Multimedia classroom.The addition of tablet computer, teacher are not limited on passageway, and teacher can be completely among approaching students, with Raw psychological distance further reduces.

4. it is further preferred that built in the projector and mating WHDI wireless receivings end of WHDI wireless transmitting terminals.

The WHDI receiving terminals of projector and the WHDI transmitting terminals of multimedia computer are mating, further incorporate classroom multimedia System has further ensured the stability of classroom multimedia system.

5. there are one preferred embodiments, the display for being exactly multimedia computer is touch liquid crystal display, built-in and WHDI The WHDI receiving terminals of transmitting terminal configuration.

Touch liquid crystal display is a part for tablet computer, and weight can be lighter.Teacher, which holds, to attend class, and further increases The comfort level of class-teaching of teacher.

6. preferably, multimedia computer is industrial PC, optimization project further includes：（1）It is drilled described in directly being opened after booting Show software；（2）Automatically the courseware is searched for, automatically into demonstrator's view.

Courseware is storable in network site, is stored in the portable equipments such as the USB flash disk of grafting on computers.Except WHDI Outside the interfaces such as wireless transmission, courseware storage, power supply, other interfaces are reduced to the greatest extent.Except multi-display, demoware, demonstrator regard Outside figure related software, other software being simplified as possible, as possible cures software systems, resource is concentrated on to improve multimedia operation In efficiency and stability.Industrial PC can be inserted computer, can also be tablet computer.

7. a kind of application method of classroom multimedia system, optionally：

（1）If being not provided with multi-display, it is basic display unit that the multimedia computer display, which is arranged, and the projector is arranged For expanded scope；If not running the demoware, the demoware is run；If being not turned on the courseware, Open the courseware；If not running demonstrator's view, demonstrator's view is run on the multimedia computer, in the throwing Viewer's view is run on shadow machine；

（2）Step 2：Teacher plays a flow of the courseware by demonstrator's view, and student passes through the viewer View watches the courseware；

（3）Step 3：Feedback of the student on the projection blank after writing on the blackboard viewing projection；

（4）Step 4：The writing on the blackboard that teacher evaluates student by demonstrator's view is fed back；

（5）Step 5：If student does not change, 7 are entered step, the writing on the blackboard feedback is changed in otherwise student's writing on the blackboard；

（6）Step 6：If teacher does not change, 7 are entered step, otherwise teacher changes institute's commentary by demonstrator's view Valence；

（7）Step 2-7 is repeated, until all flows of courseware terminate.

It is not that each flow is required for Students ' Feedback, nor each Students ' Feedback is required for teacher in field research It makes an appraisal, Students ' Feedback and evaluation of teacher also also have other way of presentation, but vision is the main means of acquisition of information, fully Show with conventional panels book exhibition and shown with hyundai electronics blank, be conducive to improve classroom interaction quality, is conducive to improve Classroom instruction quality.

Advantageous effect：

1. teachers and students' View separation, demonstrator's view supports teachers' instruction, viewer's view that student is supported to listen to the teacher, and the two coordinates one It causes, improves teachers' instruction and student's efficiency of listening to lecture.

2. independent two way of presentation are interactive simultaneously, the stand-by period between displaying is shortened, it is interactive to improve displaying Compactedness, the colorful displaying interactive event of horn of plenty lays the first stone.

3. computer lightweight and miniaturization give lessons in student area for teacher and lay the first stone, it is particularly suitable for the intimate atmosphere of teachers and students More demanding middle and primary schools classroom.

4. not only complicated computer is by there is the operation of teacher of professional technique, the student of professional technique does not use writing on the blackboard then, And teacher is shown using electronic whiteboard, student shows that teachers and students respectively possess way of presentation using whiteboard book exhibition, technically mutually Isolation, the two improve the reliability of multimedia system.

5. teachers and students' View separation lays the first stone for novel courseware.This courseware not only specific student viewing content, but also have clothes Be engaged in the remarks content of teachers' instruction, be also Students ' Feedback reserved space, outside class preset the stage just have specific roles of teachers and students It divides.

6. the industrial computer of profession, improves the stability of multimedia system, improves to carry out by demonstrator's view and teach The efficiency in classroom.

Description of the drawings

Fig. 1：Demonstrator's view schematic diagram.Demonstrator's view three tools more than viewer view, when Presentation toolbar, two It is Row control item, third, remarks textbox.This figure is only illustrated, specific position, and specific increased function may slightly not Together.

Fig. 2：WHDI transmitter circuit figures.Derived from the data of Mini PCI-E interfaces, mainly by AMN2120 and AMN3110 is modulated into 5.8G frequency range OFDM radiofrequency signals, into open space.

Fig. 3：WHDI acceptor circuit figures.The 5.8G frequency range OFDM radiofrequency signals from open space are opened, mainly through AMN3210 And AMN2220, it is transferred to Mini PCI-E interfaces.

Specific implementation mode：

Multi-display can be supported by operating system, can also be realized with specific software, and preferred operations system is supported.With Interactive electric whiteboard shows that identical content is different with copy mode, and for this programme using extended mode, multimedia computer is aobvious The content shown is different from the content that projector shows.Multimedia computer shows different content with projector, is in multimedia classroom Teacher and student is laid a good foundation using private views respectively.

For example, WINDOWS operating systems can be used, multi-display is set, multimedia computer display is basic display unit, is thrown Shadow machine is expanded scope.

（2）Demoware supports demonstrator's view, multimedia computer screen to run demonstrator's view, and projector runs simultaneously Viewer's view, viewer's view are a sub- view of demonstrator's view（See Fig. 1）.

Demoware can be PPT, can also be Kingsoft demonstration etc., preferably PPT.Because software is different, specific title, Function, operation etc. are slightly different.It is directly related with demo content, it just appears in viewer's view, demonstrator's view removes Further include the sub- view for supporting demonstration outside the sub- view of viewer, than demonstration such as flowchart illustrative, annotates view, demo content prompt View etc..Viewer's view do not have electronic whiteboard interactive function, even if gather around be strictly limited in faint level of interaction, and Electronic whiteboard interactive function is the basic function of demonstrator's view, and courseware Row control, annotation are emphasized, demo content prompts Deng all being completed by demonstrator's view.Operating process on demonstrator's view will not interfere the display of viewer's view.

For example, PPT can be run, courseware is opened, when projection opens uses demonstrator's view on basic display unit.

（3）It is also wear-resisting to project blank, supports chalk writing.

Will projection blank on writing on the blackboard, to projection blank and chalk all there are certain requirements.Matt surface is projection quality Basic guarantee, chalk-writing is easily destroyed the matt surface layer of projection blank with erasing, therefore supports the projection blank of chalk writing There is wear-resisting requirement to plank, cannot be used for supporting the projection blank of writing on the blackboard intolerant to the plank of abrasion.In order to protect projection blank Matt surface layer, the friction coefficient of chalk wants small, will also be based on black, and white chalk just loses expressive force.

2. preferably, multimedia computer setting WHDI transmits wirelessly end.

Has the stand-alone product that more moneys use WHDI technical transmission HDMI signals in the market, the WHDI transmittings that this programme needs End and corresponding receiving terminal, can buy from market.

Such as Fig. 2, vision signal is first replaced as ITU-R BT.601/ ITU-R BT.656 standard signals, then send out through base band It is sent to chip AMN2120 processing, 4 tunnel I/Q signals is then exported and is transmitted to radio frequency transmission chip AMN3110 and be modulated into 5.8G frequency ranges Ofdm signal is promoted by power amplifier chip RTC6670, is finally emitted to free space.

Such as Fig. 3,5.8G signals access AMN3210OFDM demodulation chips via antenna, and chip exports 5 tunnel I/Q signals and is transmitted to AMN2220 screened, compared, decode after export ITU-R BT.656 reference format signals, pass through signal rotation chip and replace At HDMI signals.

As long as Siemens AG has had projector, built-in receiving terminal so that transmitting terminal is built in tablet computer with reference to Fig. 2 It can be with.

Have built in partial display WHDI receivers now, only these display sizes are all too big, refer again to Fig. 3, so that it may to realize the special touch liquid crystal display in classroom.

7. a kind of application method of classroom multimedia system, optionally：

（7）Step 2-7 is repeated, until all flows of courseware terminate.

It is not that each flow is required for Students ' Feedback, nor each Students ' Feedback is required for teacher in field research It makes an appraisal, Students ' Feedback and evaluation of teacher also also have other way of presentation, but vision is the main means of acquisition of information, fully Show with conventional panels book exhibition and shown with hyundai electronics blank, not only improve and improve classroom interaction quality, is also beneficial to improve classroom Quality of instruction.

Claims

1. a kind of classroom multimedia system, including multimedia computer system, be fixed on the wall of dais projection blank, be fixed on With the projector of the multimedia computer data connection above dais, demoware is run on the multimedia computer, it is described to drill The courseware and other displaying contents for showing software demonstration, are shown to by the projector on the projection blank, it is characterised in that：

（1）The multimedia computer system supports multi-display, energy extended desktop to the projector；

（2）The demoware supports demonstrator's view, the multimedia computer screen to run demonstrator's view, the projector Viewer's view is run simultaneously, viewer's view is a sub- view of demonstrator's view；

（3）The projection blank is also wear-resisting, supports chalk writing.

2. classroom multimedia system as claimed in claim 1, it is characterized in that：WHDI wireless transmitting terminals are arranged in the computer.

3. classroom multimedia system as claimed in claim 2, it is characterized in that：The multimedia computer is tablet computer, the WHDI Wireless transmitting terminals are built in tablet computer.

4. classroom multimedia system as claimed in claim 3, it is characterized in that：The projector is built-in with the WHDI wireless transmitting terminals Mating WHDI wireless receivings end.

5. classroom multimedia system as claimed in claim 2, it is characterized in that：The display of the multimedia computer is that touch liquid crystal is aobvious Show device, the built-in and mating WHDI receiving terminals of WHDI transmitting terminals.

6. such as the classroom multimedia system of claim 1,2,3,4 or 5, it is characterized in that：The multimedia computer is industrial PC, Optimization project further includes：（1）The demoware is directly opened after booting；（2）Automatically the courseware is searched for, automatically into described Demonstrator's view.

7. a kind of application method of classroom multimedia system, it is characterized in that：

（1）Step 1：If being not provided with multi-display, the multimedia computer display is set for basic display unit, described in setting Projector is expanded scope, if not running the demoware, runs the demoware, if be not turned on described Courseware opens the courseware, if not running demonstrator's view, demonstrator's view is run on the multimedia computer, Viewer's view is run in the projector；

（7）Step 2-7 is repeated, until all flows of the courseware terminate.