CN102881196A - Electronic lecturing system - Google Patents
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- CN102881196A CN102881196A CN2012101800240A CN201210180024A CN102881196A CN 102881196 A CN102881196 A CN 102881196A CN 2012101800240 A CN2012101800240 A CN 2012101800240A CN 201210180024 A CN201210180024 A CN 201210180024A CN 102881196 A CN102881196 A CN 102881196A
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Abstract
The invention relates to the technical field of multimedia systems, in particular to an electronic lecturing system. The electronic lecturing system comprises a computer mainframe, a touch control display screen, projection equipment, a projection screen, wherein the touch control display screen and the projection equipment are in data connection with the computer mainframe. According to the electronic lecturing system, the computer mainframe is controlled and information is input by hand through the touch control display screen, and the information is reflected onto the projection screen by the projection equipment in real time, so that paperless lecturing is realized with the adoption of an intelligent multimedia mode. The electronic lecturing system has the advantages as follows: 1, a teacher can completely get rid of blackboard-writing modes with a chalk, an ink pen and the like, and is kept away from the pollution of the traditional chalk powder, and a healthy and neat lecturing and learning environment is created; 2, with the adoption of the touch control display screen, the computer mainframe can be operated visually and conveniently; the teacher can input the information by hand freely in the course of explaining and demonstrating; the input information can be inserted into a lecture file with the real handwriting being reserved, and storage and calling are convenient; and 3, lecturing contents can be transferred in a paperless manner completely, so that low carbon and environmental protection are achieved, and the lecturing effects and the efficiency are improved.
Description
Technical field:
The present invention relates to the multimedia system technical field, relate in particular to a kind of electronics and lecture system.
Background technology:
Traditional form of teaching is that teacher directly uses the chalk-writing writing on the blackboard, and dust is large, and the harm teacher is healthy, and written contents is more single, and the expression mode is stiff, and written contents can't be preserved, and generally all old content need be wiped when writing new content.Extensive popularization and application along with computing machine, the multimedia educational model that is comprised of computing machine, audio frequency and video playback equipment and projector has appearred in occasions such as teaching, meetings, but this teaching pattern still exists many deficiencies: 1, teacher can only explain in the mode of playing according to the preprepared courseware, can't be with the content presentation of its extemporaneous play to the student, it is dull, not lively to teach; And, teacher's excellence performance can't be recorded; 2, the mode of giving lessons is stiff, lacks interactive between teacher and the student; 3, teacher for its excellent teaching content presentation to the student, need to prepare a large amount of coursewares, workload is very large.
Summary of the invention:
Purpose of the present invention is exactly to provide a kind of for the deficiency of prior art existence to realize the with no paper electronics instruction system of lecturing in the intelligent multi-media mode.
To achieve these goals, the technical solution used in the present invention is:
Electronics is lectured system, include host computer, be used for performance host computer displaying contents and control the projection screen of the touching display screen of host computer, the projector equipment that is used for projection host computer displaying contents, reflective projection equipment projection content, touching display screen, projector equipment are connected with the host computer data respectively.
Described touching display screen is induction handwriting input display screen.
The way of electromagnetic induction of described touching display screen is active type way of electromagnetic induction or passive way of electromagnetic induction.
Described projector equipment is interactive projector.
Described projection screen is projection screen or interactive electric whiteboard.
The present invention also includes and lectures the dais, and host computer, touching display screen are separately positioned on to be lectured on the dais.
The present invention also includes a plurality of panel computer terminals for simultaneous display host computer displaying contents, is connected by the WIFI wireless signal between panel computer terminal and the host computer.
Be connected with WIFI mode wireless signal by the video radio transmission apparatus between described projector equipment and the host computer.
Described touching display screen includes circuit board, the LCD display module, USB interface, the HDMI signal input interface, the VGA signal input interface, be used to the power interface of each element power supply, circuit board is provided with backlight drive circuit, digital signal processing circuit, analog signal processing circuit, the LVDS signal output apparatus, VGA signal replication output interface, the LCD display module includes the hand-written module of electromagnetic induction, the TFT screen, the hand-written module of electromagnetic induction is connected with the USB interface data, backlight drive circuit connects the TFT screen, the input end of HDMI signal input interface linking number word signal processing circuit, the input end of VGA signal input interface connecting analog signal processing circuit, the output terminal of digital signal processing circuit is connected output terminal and is connected with the input end of LVDS signal output apparatus respectively with analog signal processing circuit, the output terminal of LVDS signal output apparatus connects the input end of TFT screen, the output terminal of VGA signal replication output interface connecting analog signal processing circuit.
Beneficial effect of the present invention is: the present invention includes host computer, be used for performance host computer displaying contents and control the projection screen of the touching display screen of host computer, the projector equipment that is used for projection host computer displaying contents, reflective projection equipment projection content, touching display screen, projector equipment are connected with the host computer data respectively, the present invention controls host computer and handwritten input information by touching display screen, and reflex in real time on the projection screen by projector equipment, realize with no paper instruction in the intelligent multi-media mode, the present invention has the following advantages:
1, the teacher can be completely free of the writing on the blackboard modes such as chalk and water-color paintbrush, pollutes away from traditional chalk powder, creates healthy clean and tidy teaching and academic environment;
2, the operating computer main frame that touching display screen can intuitive and convenient, can free handwritten input information in the explanation presentation process, input message can directly be inserted in the lecture document in the mode that true person's handwriting keeps, teacher's each teaching process and excellent performance are intactly recorded, high sensitivity, high precision is preserved and is called conveniently;
3, lecture content and can realize with no paper transmission, low-carbon environment-friendly fully;
4, panel computer terminal, touching display screen, projection screen and host computer form multi-faceted interaction mode, have strengthened in the teachers process interaction with the student, attract to greatest extent student's on class notice, improve and lecture effect;
5, can pass through touching display screen, projector equipment, projection screen operating computer main frame and handwritten input information, the dynamic interaction performance, enrich teachers and teaching notes content, alleviate simultaneously prepare lesson and do the heavy work of teaching notes, be conducive to the teacher saying the excellent performance of class hour passion, improve and lecture efficient.
Description of drawings:
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of another embodiment of the present invention.
Fig. 3 is the structural representation of touching display screen of the present invention.
Embodiment:
The present invention is further illustrated below in conjunction with accompanying drawing, see shown in Fig. 1,3, electronics is lectured system, include and lecture dais 5, host computer 1, be used for the projection screen 4 of the touching display screen 2 that shows host computer 1 displaying contents and control host computer 1, the projector equipment 3 that is used for projection host computer 1 displaying contents, reflective projection equipment 3 projection contents, touching display screen 2, projector equipment 3 are connected with host computer 1 data respectively.
Host computer 1 is for performance and shows the carrier that needs to embody video information, can be the main frame of not being with display, with the desktop computer of main frame and display, notebook computer etc., compatible working environment: Windows XP, Windows Vista, Windows7, Mac OS etc.
Touching display screen 2 is induction handwriting input display screen, is used for performance computer displaying contents; Input message in the explanation presentation process; Replace conventional keyboard mouse input equipment, make computation break away from traditional input mode of keyboard and mouse, the operating computer of intuitive and convenient; Input message is kept in the mode that true person's handwriting keeps, can be hand-written in conjunction with electronic equipment, and hand-written content can directly be inserted in the lecture document and preserve, write full one page page-turnable, need not wipe old content, limitless volumes can conveniently access old content page when needing.The way of electromagnetic induction of touching display screen 2 is active type way of electromagnetic induction or passive way of electromagnetic induction.
The present invention controls host computer 1 and handwritten input information by touching display screen 2, and reflex in real time on the projection screen 4 by projector equipment 3, realize with no paper instruction in the intelligent multi-media mode, the teacher can be completely free of the writing on the blackboard modes such as chalk and water-color paintbrush, pollute away from traditional chalk powder, create healthy clean and tidy teaching and academic environment; Touching display screen 2 can intuitive and convenient operating computer main frame 1, can free handwritten input information in the explanation presentation process, input message can directly be inserted in the lecture document in the mode that true person's handwriting keeps, teacher's each teaching process and excellent performance are intactly recorded, high sensitivity, high precision is preserved and is called conveniently; Lecture content and can realize with no paper transmission, low-carbon environment-friendly fully; Can pass through touching display screen 2, projector equipment 3, projection screen 4 operating computer main frame 1 and handwritten input informations, the dynamic interaction performance, enrich teachers and teaching notes content, alleviate simultaneously prepare lesson and do the heavy work of teaching notes, be conducive to the teacher and saying the excellent performance of class hour passion, improve and lecture efficient, be applicable to the occasions such as teaching, training, meeting.
See shown in Fig. 2,3, as another embodiment of the present invention, different from a upper embodiment is, the present invention can be equipped with a plurality of panel computer terminals 6 for simultaneous display host computer 1 displaying contents, be connected with the WIFI wireless signal by video radio transmission apparatus 7 between panel computer terminal 6 and the host computer 1, certainly panel computer terminal 6 also can desktop computer, notebook computer, intelligent touch screen mobile phone etc.Panel computer terminal 6 is for the student, host computer 1 is for the teacher, panel computer terminal 6 can receive the data of host computer 1, data and simultaneous display host computer 1 displaying contents, the courseware document that panel computer terminal 6 can the simultaneous display teacher be being explained, the student takes notes and can directly finish in panel computer terminal 6, the teacher can optionally be shown to the content on certain student's the panel computer terminal 6 on the projection screen 4 simultaneously, the teacher can send courseware document and relevant auxiliary information for each panel computer terminal 6 by host computer 1, operations etc. can fully realize with no paper transmission.Panel computer terminal 6, touching display screen 2, projection screen 4 forms multi-faceted interaction mode with host computer 1, strengthened in the teachers process interaction with the student, attracts to greatest extent student's on class notice, improves and lectures effect.
Be connected with WIFI mode wireless signal by video radio transmission apparatus 7 between projector equipment 3 and the host computer 1.Video radio transmission apparatus 7 is connected to the signal input part of display device (such as projector equipment 3), by the connected mode of WIFI, the displaying contents of host computer 1 is transferred to projector equipment 3.
Certainly, the above only is preferred embodiment of the present invention, so all equivalences of doing according to the described structure of patent claim of the present invention, feature and principle change or modify, is included in the patent claim of the present invention.
Claims (9)
1. electronics is lectured system, it is characterized in that: include host computer (1), be used for performance host computer (1) displaying contents and control the projection screen (4) of the touching display screen (2) of host computer (1), the projector equipment (3) that is used for projection host computer (1) displaying contents, reflective projection equipment (3) projection content, touching display screen (2), projector equipment (3) are connected with host computer (1) data respectively.
2. electronics according to claim 1 is lectured system, and it is characterized in that: described touching display screen (2) is induction handwriting input display screen.
3. electronics according to claim 2 is lectured system, and it is characterized in that: the way of electromagnetic induction of described touching display screen (2) is active type way of electromagnetic induction or passive way of electromagnetic induction.
4. electronics according to claim 1 is lectured system, and it is characterized in that: described projector equipment (3) is interactive projector.
5. electronics according to claim 1 is lectured system, and it is characterized in that: described projection screen (4) is projection screen or interactive electric whiteboard.
6. electronics according to claim 1 is lectured system, it is characterized in that: also include and lecture dais (5), host computer (1), touching display screen (2) are separately positioned on to be lectured on the dais (5).
7. electronics according to claim 1 is lectured system, it is characterized in that: also include a plurality of panel computer terminals (6) for simultaneous display host computer (1) displaying contents, be connected by the WIFI wireless signal between panel computer terminal (6) and the host computer (1).
8. electronics according to claim 1 is lectured system, it is characterized in that: be connected with WIFI mode wireless signal by video radio transmission apparatus (7) between described projector equipment (3) and the host computer (1).
9. the described electronics of any one is lectured system according to claim 1～8, it is characterized in that: described touching display screen (2) includes circuit board (21), LCD shows module (22), USB interface (23), HDMI signal input interface (24), VGA signal input interface (25), be used to the power interface (26) of each element power supply, circuit board (21) is provided with backlight drive circuit (211), digital signal processing circuit (212), analog signal processing circuit (213), LVDS signal output apparatus (214), VGA signal replication output interface (215), LCD display module (22) includes the hand-written module of electromagnetic induction (221), TFT screen (222), the hand-written module of electromagnetic induction (221) is connected with USB interface (23) data, backlight drive circuit (211) connects TFT screen (222), the input end of HDMI signal input interface (24) linking number word signal processing circuit (212), the input end of VGA signal input interface (25) connecting analog signal processing circuit (213), the output terminal of digital signal processing circuit (212) is connected 213 with analog signal processing circuit) output terminal be connected with the input end of LVDS signal output apparatus (214) respectively, the output terminal of LVDS signal output apparatus (214) connects the input end of TFT screen (222), the output terminal of VGA signal replication output interface (215) connecting analog signal processing circuit (213).
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101800240A CN102881196A (en) | 2012-06-04 | 2012-06-04 | Electronic lecturing system |
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| CN2012101800240A CN102881196A (en) | 2012-06-04 | 2012-06-04 | Electronic lecturing system |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103685525A (en) * | 2013-12-18 | 2014-03-26 | 上海安逆杰信息技术有限公司 | Embedded type smart cloud terminal system and double-screen displaying working method thereof |
| CN104125513A (en) * | 2014-07-23 | 2014-10-29 | 天脉聚源（北京）教育科技有限公司 | Data sharing method and device |
| CN104158900A (en) * | 2014-08-25 | 2014-11-19 | 焦点科技股份有限公司 | Method and system for synchronizing courseware through iPad controlling |
| CN104464420A (en) * | 2014-10-29 | 2015-03-25 | 李铭梁 | Intelligent original handwriting platform system |
| CN104731404A (en) * | 2014-12-10 | 2015-06-24 | 朱云 | Novel blackboard |
| CN104952293A (en) * | 2014-03-24 | 2015-09-30 | 颜厥护 | Book-form electronic course |
| CN104966422A (en) * | 2015-07-15 | 2015-10-07 | 滁州市状元郎电子科技有限公司 | Remote sensing spatial information teaching experiment system |
| CN105070129A (en) * | 2015-07-24 | 2015-11-18 | 苏州点通教育科技有限公司 | Electronic classroom teaching system and method |
| CN105843611A (en) * | 2016-03-18 | 2016-08-10 | 天脉聚源（北京）教育科技有限公司 | Data processing method and device |
| CN106023696A (en) * | 2016-08-02 | 2016-10-12 | 合肥东上多媒体科技有限公司 | Multimedia teaching interaction device |
| CN106251718A (en) * | 2016-08-08 | 2016-12-21 | 深圳市东明炬创电子有限公司 | A kind of teaching application system |
| CN106445442A (en) * | 2016-09-29 | 2017-02-22 | 福州新锐同创电子科技有限公司 | Three-screen synchronous display method |
| CN110045938A (en) * | 2019-04-17 | 2019-07-23 | 杭州迈杰教育科技有限公司 | Group discussion control system |
| CN110827583A (en) * | 2018-08-11 | 2020-02-21 | 欧光君 | Classroom multimedia system |
| CN111338552A (en) * | 2019-01-21 | 2020-06-26 | 鸿合科技股份有限公司 | Chalk handwriting writing method and device and electronic equipment |
| CN113658468A (en) * | 2021-08-24 | 2021-11-16 | 重庆沛杰教育科技集团有限公司 | Can realize online spoken language video teaching device of teachers and students' linkage index |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61273662A (en) * | 1985-05-29 | 1986-12-03 | Sony Corp | Dialogue type learning equipment |
| JP2007219218A (en) * | 2006-02-17 | 2007-08-30 | Seiko Instruments Inc | Electronic equipment for language learning and translation reproducing method |
| CN201218991Y (en) * | 2008-07-10 | 2009-04-08 | 谷利宁 | Environment-friendly movable intelligent multimedia classroom system |
| CN201251855Y (en) * | 2008-09-04 | 2009-06-03 | 吴凤君 | Multifunctional multimedia for teaching |
| CN201374129Y (en) * | 2009-03-31 | 2009-12-30 | 重庆交通大学 | Electronic teaching blackboard realized on the basis of general PC, touch screen and projection system |
| CN101685206A (en) * | 2008-09-26 | 2010-03-31 | 汉王科技股份有限公司 | External handwriting display device of drive board |
| CN201804316U (en) * | 2010-05-26 | 2011-04-20 | 汉王科技股份有限公司 | Liquid crystal display equipment with function of electromagnetic induction |
| CN102402870A (en) * | 2011-12-14 | 2012-04-04 | 广州兆威电子科技开发有限公司 | Multifunctional demonstration audio-visual teaching equipment |
| CN202677646U (en) * | 2012-06-04 | 2013-01-16 | 东莞市沃德电子科技有限公司 | Interactive electronic lecturing system |
-
2012
- 2012-06-04 CN CN2012101800240A patent/CN102881196A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61273662A (en) * | 1985-05-29 | 1986-12-03 | Sony Corp | Dialogue type learning equipment |
| JP2007219218A (en) * | 2006-02-17 | 2007-08-30 | Seiko Instruments Inc | Electronic equipment for language learning and translation reproducing method |
| CN201218991Y (en) * | 2008-07-10 | 2009-04-08 | 谷利宁 | Environment-friendly movable intelligent multimedia classroom system |
| CN201251855Y (en) * | 2008-09-04 | 2009-06-03 | 吴凤君 | Multifunctional multimedia for teaching |
| CN101685206A (en) * | 2008-09-26 | 2010-03-31 | 汉王科技股份有限公司 | External handwriting display device of drive board |
| CN201374129Y (en) * | 2009-03-31 | 2009-12-30 | 重庆交通大学 | Electronic teaching blackboard realized on the basis of general PC, touch screen and projection system |
| CN201804316U (en) * | 2010-05-26 | 2011-04-20 | 汉王科技股份有限公司 | Liquid crystal display equipment with function of electromagnetic induction |
| CN102402870A (en) * | 2011-12-14 | 2012-04-04 | 广州兆威电子科技开发有限公司 | Multifunctional demonstration audio-visual teaching equipment |
| CN202677646U (en) * | 2012-06-04 | 2013-01-16 | 东莞市沃德电子科技有限公司 | Interactive electronic lecturing system |
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103685525A (en) * | 2013-12-18 | 2014-03-26 | 上海安逆杰信息技术有限公司 | Embedded type smart cloud terminal system and double-screen displaying working method thereof |
| CN104952293A (en) * | 2014-03-24 | 2015-09-30 | 颜厥护 | Book-form electronic course |
| CN104125513A (en) * | 2014-07-23 | 2014-10-29 | 天脉聚源（北京）教育科技有限公司 | Data sharing method and device |
| WO2016029771A1 (en) * | 2014-08-25 | 2016-03-03 | 焦点科技股份有限公司 | Method and system for ipad to control courseware synchronization |
| CN104158900B (en) * | 2014-08-25 | 2015-06-10 | 焦点科技股份有限公司 | Method and system for synchronizing courseware through iPad controlling |
| CN104158900A (en) * | 2014-08-25 | 2014-11-19 | 焦点科技股份有限公司 | Method and system for synchronizing courseware through iPad controlling |
| CN104464420A (en) * | 2014-10-29 | 2015-03-25 | 李铭梁 | Intelligent original handwriting platform system |
| CN104731404A (en) * | 2014-12-10 | 2015-06-24 | 朱云 | Novel blackboard |
| CN104731404B (en) * | 2014-12-10 | 2018-03-06 | 朱云 | New type blackboard |
| CN104966422A (en) * | 2015-07-15 | 2015-10-07 | 滁州市状元郎电子科技有限公司 | Remote sensing spatial information teaching experiment system |
| CN105070129A (en) * | 2015-07-24 | 2015-11-18 | 苏州点通教育科技有限公司 | Electronic classroom teaching system and method |
| CN105070129B (en) * | 2015-07-24 | 2018-01-30 | 苏州点通教育科技有限公司 | E-classroom tutoring system and method |
| CN105843611A (en) * | 2016-03-18 | 2016-08-10 | 天脉聚源（北京）教育科技有限公司 | Data processing method and device |
| CN106023696A (en) * | 2016-08-02 | 2016-10-12 | 合肥东上多媒体科技有限公司 | Multimedia teaching interaction device |
| CN106251718A (en) * | 2016-08-08 | 2016-12-21 | 深圳市东明炬创电子有限公司 | A kind of teaching application system |
| CN106251718B (en) * | 2016-08-08 | 2019-07-23 | 深圳市东明炬创电子有限公司 | A kind of teaching application system |
| CN106445442A (en) * | 2016-09-29 | 2017-02-22 | 福州新锐同创电子科技有限公司 | Three-screen synchronous display method |
| CN106445442B (en) * | 2016-09-29 | 2019-10-08 | 福州新锐同创电子科技有限公司 | A kind of three screen synchronous display methods |
| CN110827583A (en) * | 2018-08-11 | 2020-02-21 | 欧光君 | Classroom multimedia system |
| CN111338552A (en) * | 2019-01-21 | 2020-06-26 | 鸿合科技股份有限公司 | Chalk handwriting writing method and device and electronic equipment |
| CN111338552B (en) * | 2019-01-21 | 2022-03-25 | 鸿合科技股份有限公司 | Chalk handwriting writing method and device and electronic equipment |
| CN110045938A (en) * | 2019-04-17 | 2019-07-23 | 杭州迈杰教育科技有限公司 | Group discussion control system |
| CN110045938B (en) * | 2019-04-17 | 2022-07-29 | 杭州迈杰教育科技有限公司 | Packet discussion control system |
| CN113658468A (en) * | 2021-08-24 | 2021-11-16 | 重庆沛杰教育科技集团有限公司 | Can realize online spoken language video teaching device of teachers and students' linkage index |
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Application publication date: 20130116 |