CN103123752B - Audio-video playing system and method based on electronic whiteboard - Google Patents
Audio-video playing system and method based on electronic whiteboard Download PDFInfo
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- CN103123752B CN103123752B CN201110371963.9A CN201110371963A CN103123752B CN 103123752 B CN103123752 B CN 103123752B CN 201110371963 A CN201110371963 A CN 201110371963A CN 103123752 B CN103123752 B CN 103123752B
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Abstract
The invention discloses an audio-video playing system and method based on an electronic whiteboard. The audio-video playing method includes steps that: wireless audio-video data transmission is constructed between a storage unit and the electronic whiteboard, wherein the storage unit is connected with a transmitting board, the electronic whiteboard is connected with a receiving board, the transmitting board and the receiving board are in wireless connection, the receiving board is connected with a projector, and the projector projects images on the electronic whiteboard; a touch screen of the electronic whiteboard receives single-point or multi-point touch or writing of users, operations of the users are converted to coordinate signals and wirelessly transmitted to the transmitting board through the receiving board, and the transmitting board transmits the received signals to the storage unit for analyzing; and the storage unit takes corresponding audio-video data, the transmitting board wirelessly transmits the audio-video data to the receiving board, and the projector decodes the data and then projects the data on the electronic whiteboard for playing.
Description
Technical field
The present invention relates to audio frequency and video field, in particular to a kind of audio-video frequency playing system and method based on electronic whiteboard.
Background technology
In recent years, the application of electronic whiteboard in teaching is more and more universal, and the interaction facility that electronic whiteboard brings is also extensively approved.As everyone knows, the blank of electric whiteboard system Shi You projector/short focus projector/ultrashort focus projector and band touch sensible (having several technology such as resistance/capacitance/ultrasound wave/infrared ray) forms.The wireless connections problem of the electric whiteboard system that the Shi Duan out-of-focus projection that the model I in this product will solve or ultrashort out-of-focus projection and touch (containing several technology such as resistance/capacitance/ultrasound wave/infrared rays) blank forms.
Under present electric whiteboard system applied environment, we need to do RS232 control, the wiring of VGA video for projector is connected to computer, and the blank of some brand also needs to increase tone frequency channel wire, need to be USB for electronic whiteboard and computer and be connected.This has strengthened workload and work difficulty undoubtedly, USB is because being subject to the restriction of usb protocol, the line that surpasses five meters need to carry out conceptual design in addition, but applied environment exceeds this length sometimes (in lecture theater, if electronic whiteboard is placed dais one side, add that wiring need to get around this consideration of track route).
This use-pattern is the basic connection that adopts video cables (VGA)+audio cable+RS232 control line+USB cable simultaneously to connect up main frame (RS232 is by central controller controls) and electric whiteboard system now.
Summary of the invention
The invention provides a kind of audio-video frequency playing system and method based on electronic whiteboard, in order to widen the range of application that adopts electronic whiteboard displaying video.
For achieving the above object, the invention provides a kind of audio-video frequency playing system based on electronic whiteboard, this device comprises: storage unit, expelling plate, dash receiver, projector and electronic whiteboard, wherein
Expelling plate is connected with storage unit, and dash receiver is connected with electronic whiteboard with projector respectively, and expelling plate and dash receiver form wireless connections;
Electronic whiteboard is provided with touch-screen, it is accepted user's single-point or multiple point touching or writes, and user's operation is converted to coordinate signal by dash receiver, is wirelessly transmitted to expelling plate, expelling plate is sent to storage unit by the signal of reception and resolves, and transfer corresponding audio, video data and be wirelessly transmitted to dash receiver by expelling plate, after being decoded by projector, be projected on electronic whiteboard and play.
For achieving the above object, the present invention also provides a kind of audio frequency and video player method based on electronic whiteboard, and the method comprises the following steps:
Between storage unit and electronic whiteboard, set up wireless audio and video data transmission, wherein, storage unit is connected with expelling plate, electronic whiteboard is connected with dash receiver, expelling plate and dash receiver form wireless connections, and dash receiver is connected with projector, projector by image projecting on electronic whiteboard;
By the touch-screen of electronic whiteboard, accepted user's single-point or multiple point touching or write, and user's operation is converted to coordinate signal by dash receiver, is wirelessly transmitted to expelling plate, expelling plate is sent to storage unit by the signal of reception and resolves;
By storage unit, transfer corresponding audio, video data and be wirelessly transmitted to dash receiver by expelling plate, after being decoded by projector, be incident upon on electronic whiteboard and play.
In the above-described embodiments, connecting under normal state, after electronic whiteboard is opened, native system enters into running status, expelling plate sends to dash receiver by the audio-video signal of storage unit (as PC or server) by wireless mode, and dash receiver passes to electronic whiteboard by signal wire and shows, writer is write or is touched by the touch-screen of electronic whiteboard, signal passes to dash receiver by the usb signal line of touch-screen, dash receiver by wireless signal transfer to expelling plate, expelling plate outputs to storage unit by USB, storage unit is output as a new audio frequency and video image through processing, through expelling plate and dash receiver, being sent to projector projects on electronic whiteboard and plays, completed the interaction circulation of a video and touch/write, make to adopt the device of electronic whiteboard displaying video can wireless transmission and interaction in the scope of apart from each other by electronic whiteboard and storage unit, avoided the inconvenience of wiring.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the audio-video frequency playing system schematic diagram based on electronic whiteboard of one embodiment of the invention;
Fig. 2 is the audio-video frequency playing system schematic diagram based on electronic whiteboard of one embodiment of the present invention;
Fig. 3 is the audio frequency and video player method process flow diagram based on electronic whiteboard of one embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not paying the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 1 is the audio-video frequency playing system schematic diagram based on electronic whiteboard of one embodiment of the invention; As shown in Figure 1, this device comprises: storage unit 10, expelling plate 20, dash receiver 30, projector 40 and electronic whiteboard 50, wherein
Expelling plate 20 is connected with storage unit 10, and dash receiver 30 is connected with electronic whiteboard 50 with projector 40 respectively, and expelling plate 20 forms wireless connections with dash receiver 30;
Electronic whiteboard 50 is provided with touch-screen, it is accepted user's single-point or multiple point touching or writes, and user's operation is converted to coordinate signal by dash receiver 30, is wirelessly transmitted to expelling plate 20, expelling plate 20 is sent to storage unit 10 by the signal of reception and resolves, and transfer corresponding audio, video data and be wirelessly transmitted to dash receiver 30 by expelling plate 20, by being projected on electronic whiteboard 50 and playing after projector's 40 decodings.
In the above-described embodiments, connecting under normal state, after electronic whiteboard is opened, native system enters into running status, expelling plate sends to dash receiver by the audio-video signal of storage unit (as PC or server) by wireless mode, and dash receiver passes to electronic whiteboard by signal wire and shows, writer is write or is touched by the touch-screen of electronic whiteboard, signal passes to dash receiver by the usb signal line of touch-screen, dash receiver by wireless signal transfer to expelling plate, expelling plate outputs to storage unit by USB, storage unit is output as a new audio frequency and video image through processing, through expelling plate and dash receiver, being sent to projector projects on electronic whiteboard and plays, completed the interaction circulation of a video and touch/write, make to adopt the device of electronic whiteboard displaying video can wireless transmission and interaction in the scope of apart from each other by electronic whiteboard and storage unit, avoided the inconvenience of wiring.
Dash receiver connects in the USB interface of projector by a USB wiring, and in the USB interface by another USB wiring connecting electronic blank, its power supply (as DC5V) is connected on city's electric socket board; Audio-video interface (as VGAINPUT and L/R AUDIEO) is connected on the audio frequency and video input port (as VGA and audio input port) of TV.
The USB interface of transmitting version connects the USB interface of PC main frame, and audio frequency and video input port connects the audio frequency and video delivery outlet of PC main frame, and its power supply (as DC5V) is connected to city's electric socket board.
Fig. 2 is the audio-video frequency playing system schematic diagram based on electronic whiteboard of one embodiment of the present invention, as shown in Figure 2, expelling plate comprises the first radio-frequency (RF) receiving and transmission module 101, the first data conversion module 102, the first usb interface module 103, WHDI transmitter module 104, the one WHDI audio frequency and video module 105 and the first protocol conversion module 106, the first radio-frequency (RF) receiving and transmission module 101, the first data conversion module 102 is connected successively with the first usb interface module 103, the first usb interface module 103 is connected with the USB interface of storage unit 10 by USB wiring, WHDI transmitter module 104, the one WHDI audio frequency and video module 105 is connected successively with the first protocol conversion module 106, the audio, video data input port 111 of the first protocol conversion module 106 is connected with the audio, video data delivery outlet 112 of storage unit 10,
Dash receiver comprises the second radio-frequency (RF) receiving and transmission module 201, the second data conversion module 202, secondary USB interface module 203, WHDI receiver module 204, the 2nd WHDI audio frequency and video module 205 and second protocol modular converter 206, the second radio-frequency (RF) receiving and transmission module 201, the second data conversion module 202 is connected successively with secondary USB interface module 203, secondary USB interface module 203 is connected with the USB interface of electronic whiteboard 50 by USB wiring, WHDI receiver module 204, the 2nd WHDI audio frequency and video module 205 is connected successively with second protocol modular converter 206, the video data input port of the video data delivery outlet 210Yu projector 40 of second protocol modular converter 206 is connected,
Wherein, the first radio-frequency (RF) receiving and transmission module 101 forms less radio-frequency with the second radio-frequency (RF) receiving and transmission module 201 and is connected, and WHDI transmitter module 104 forms wireless audio and video with WHDI receiver module 204 and is connected.
As shown in Figure 2, above-described embodiment can also comprise: the first control module 107, the first power adaptation module 108, the first bus interface module 109 and central controller 110, central controller 110, the first bus interface module 109, the first control module 107 connect successively, the first control module 107 is connected with the first power adaptation module 108, the first power adaptation module 108 connects civil power, and the first power adaptation module 108 is connected with the first protocol conversion module 106 with WHDI transmitter module 104, a WHDI audio frequency and video module 105 respectively;
The second control module 207, the second bus interface module 208 and second source adaptation module 209, the second bus interface module 208 is connected between the second control module 207Yu projector 40, second source adaptation module 209 connects civil power, and the second control module 207 is connected with second protocol modular converter 206 with the second data conversion module 202, WHDI receiver module 204, the 2nd WHDI audio frequency and video module 205 respectively.
For example, above-described embodiment also comprises: sound system 212, is connected with the audio output port 211 of second protocol modular converter.
Fig. 3 is the audio frequency and video player method process flow diagram based on electronic whiteboard of one embodiment of the invention.As shown in Figure 3, the method comprises the following steps:
S102, between storage unit and electronic whiteboard, set up wireless audio and video data transmission, wherein, storage unit is connected with expelling plate, electronic whiteboard is connected with dash receiver, expelling plate and dash receiver form wireless connections, and dash receiver is connected with projector, projector by image projecting on electronic whiteboard;
S104, is accepted user's single-point or multiple point touching or is write by the touch-screen of electronic whiteboard, and user's operation is converted to coordinate signal by dash receiver, is wirelessly transmitted to expelling plate, and expelling plate is sent to storage unit by the signal of reception and resolves;
S106, transfers corresponding audio, video data by storage unit and is wirelessly transmitted to dash receiver by expelling plate, after being decoded, is incident upon on electronic whiteboard and plays by projector.
In the above-described embodiments, connecting under normal state, after electronic whiteboard is opened, native system enters into running status, expelling plate sends to dash receiver by the audio-video signal of storage unit (as PC or server) by wireless mode, and dash receiver passes to electronic whiteboard by signal wire and shows, writer is write or is touched by the touch-screen of electronic whiteboard, signal passes to dash receiver by the usb signal line of touch-screen, dash receiver by wireless signal transfer to expelling plate, expelling plate outputs to storage unit by USB, storage unit is output as a new audio frequency and video image through processing, through expelling plate and dash receiver, being sent to projector projects on electronic whiteboard and plays, completed the interaction circulation of a video and touch/write, make to adopt the device of electronic whiteboard displaying video can wireless transmission and interaction in the scope of apart from each other by electronic whiteboard and storage unit, avoided the inconvenience of wiring.
For example, further comprising the steps of before setting up wireless audio and video data transmission step between storage unit and electronic whiteboard:
After the switch open of expelling plate, to the WHDI transmitter module of expelling plate inside and the power supply of the first radio-frequency (RF) receiving and transmission module, and send wireless starting-up signal by the first radio-frequency (RF) receiving and transmission module:
The second radio-frequency (RF) receiving and transmission module of the dash receiver inside in accepting state receives after wireless starting-up signal, and the open power supply being connected with projector, opens projector by second communication bus, and the power supply of the WHDI receiver module of open dash receiver is with to its power supply;
The second radio-frequency (RF) receiving and transmission module proceeds to the interactive information that emission state is waited for electron emission blank, and the first radiofrequency emitting module proceeds to accepting state.
For example, in electronic whiteboard receives the first setting-up time after writing, the second radio-frequency (RF) receiving and transmission module proceeds to accepting state again, receives at any time the signal of writing of electronic whiteboard.When electronic whiteboard is when writing, electronic whiteboard end is emission state always.In 5 milliseconds after electronic whiteboard is write end, electronic whiteboard end can proceed to accepting state, waits for next steering order (shutdown command).
Again for example, when the second radio-frequency (RF) receiving and transmission module does not receive signal in the second setting-up time, close projector and power supply.Following class hour user forgets the switch (suppose to close steel dais) of closing transmitting terminal, receiving end latching (comprising projector and power unit) in the situation that retrieving 10 minutes without feedback information.
One of ordinary skill in the art will appreciate that: accompanying drawing is the schematic diagram of an embodiment, the module in accompanying drawing or flow process might not be that enforcement the present invention is necessary.
One of ordinary skill in the art will appreciate that: the module in the device in embodiment can be described and be distributed in the device of embodiment according to embodiment, also can carry out respective change and be arranged in the one or more devices that are different from the present embodiment.The module of above-described embodiment can be merged into a module, also can further split into a plurality of submodules.
Finally it should be noted that: above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record previous embodiment is modified, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of embodiment of the present invention technical scheme.
Claims (7)
1. the audio-video frequency playing system based on electronic whiteboard, is characterized in that, comprising: storage unit, expelling plate, dash receiver, projector and electronic whiteboard, wherein
Described expelling plate is connected with described storage unit, and described dash receiver is connected with described electronic whiteboard with described projector respectively, and described expelling plate and described dash receiver form wireless connections;
Described electronic whiteboard is provided with touch-screen, it is accepted user's single-point or multiple point touching or writes, and user's operation is converted to coordinate signal by described dash receiver, is wirelessly transmitted to described expelling plate, described expelling plate is sent to described storage unit by the signal of reception and resolves, and transfer corresponding audio, video data and be wirelessly transmitted to described dash receiver by described expelling plate, by being projected on described electronic whiteboard and playing after the decoding of described projector;
Described expelling plate comprises the first radio-frequency (RF) receiving and transmission module, the first data conversion module, the first usb interface module, WHDI transmitter module, the one WHDI audio frequency and video module and the first protocol conversion module, described the first radio-frequency (RF) receiving and transmission module, described the first data conversion module is connected successively with described the first usb interface module, described the first usb interface module is connected with the USB interface of described storage unit by USB wiring, described WHDI transmitter module, a described WHDI audio frequency and video module is connected successively with described the first protocol conversion module, the audio, video data input port of described the first protocol conversion module is connected with the audio, video data delivery outlet of described storage unit,
Described dash receiver comprises the second radio-frequency (RF) receiving and transmission module, the second data conversion module, secondary USB interface module, WHDI receiver module, the 2nd WHDI audio frequency and video module and second protocol modular converter, described the second radio-frequency (RF) receiving and transmission module, described the second data conversion module is connected successively with described secondary USB interface module, described secondary USB interface module is connected with the USB interface of described electronic whiteboard by USB wiring, described WHDI receiver module, described the 2nd WHDI audio frequency and video module is connected successively with described second protocol modular converter, the audio, video data delivery outlet of described second protocol modular converter is connected with the audio, video data input port of described projector,
Wherein, described the first radio-frequency (RF) receiving and transmission module forms less radio-frequency with described the second radio-frequency (RF) receiving and transmission module and is connected, and described WHDI transmitter module forms wireless audio and video with described WHDI receiver module and is connected.
2. system according to claim 1, is characterized in that, also comprises:
The first control module, the first power adaptation module, the first bus interface module and central controller, described central controller, described the first bus interface module, described the first control module connect successively, described the first control module is connected with described the first power adaptation module, described the first power adaptation module connects civil power, and described the first power adaptation module is connected with described the first protocol conversion module with described WHDI transmitter module, a described WHDI audio frequency and video module respectively;
The second control module, the second bus interface module and second source adaptation module, described the second bus interface module is connected between described the second control module and described projector, described second source adaptation module connects civil power, and described the second control module is connected with described second protocol modular converter with described the second data conversion module, described WHDI receiver module, described the 2nd WHDI audio frequency and video module respectively.
3. system according to claim 1, is characterized in that, also comprises: sound system, is connected with the audio output port of described second protocol modular converter.
4. system according to claim 1, is characterized in that, described storage unit is PC main frame or server.
5. the audio frequency and video player method based on electronic whiteboard, is characterized in that, comprises the following steps:
Between storage unit and electronic whiteboard, set up wireless audio and video data transmission, wherein, described storage unit is connected with expelling plate, described electronic whiteboard is connected with dash receiver, described expelling plate and described dash receiver form wireless connections, described dash receiver is connected with projector, described projector by image projecting on described electronic whiteboard;
By the touch-screen of described electronic whiteboard, accept user's single-point or multiple point touching or write, and user's operation is converted to coordinate signal by described dash receiver, is wirelessly transmitted to described expelling plate, described expelling plate is sent to described storage unit by the signal of reception and resolves;
By described storage unit, transfer corresponding audio, video data and be wirelessly transmitted to described dash receiver by described expelling plate, by being incident upon on described electronic whiteboard and playing after the decoding of described projector;
Wherein, further comprising the steps of before setting up wireless audio and video data transmission step between storage unit and electronic whiteboard:
After the switch open of described expelling plate, to the WHDI transmitter module of described expelling plate inside and the power supply of the first radio-frequency (RF) receiving and transmission module, and send wireless starting-up signal by described the first radio-frequency (RF) receiving and transmission module:
The second radio-frequency (RF) receiving and transmission module of the dash receiver inside in accepting state receives after described wireless starting-up signal, the open power supply being connected with projector, by second communication bus, open described projector, and the power supply of the WHDI receiver module of open described dash receiver is with to its power supply;
Described the second radio-frequency (RF) receiving and transmission module proceeds to the interactive information that emission state is waited for electron emission blank, and described the first radiofrequency emitting module proceeds to accepting state.
6. method according to claim 5, is characterized in that, in described electronic whiteboard receives the first setting-up time after writing, described the second radio-frequency (RF) receiving and transmission module proceeds to accepting state again.
7. method according to claim 6, is characterized in that, when described the second radio-frequency (RF) receiving and transmission module does not receive signal in the second setting-up time, closes described projector and power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110371963.9A CN103123752B (en) | 2011-11-21 | 2011-11-21 | Audio-video playing system and method based on electronic whiteboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110371963.9A CN103123752B (en) | 2011-11-21 | 2011-11-21 | Audio-video playing system and method based on electronic whiteboard |
Publications (2)
| Publication Number | Publication Date |
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| CN103123752A CN103123752A (en) | 2013-05-29 |
| CN103123752B true CN103123752B (en) | 2014-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110371963.9A Expired - Fee Related CN103123752B (en) | 2011-11-21 | 2011-11-21 | Audio-video playing system and method based on electronic whiteboard |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105225545A (en) * | 2015-10-14 | 2016-01-06 | 深圳市飞图视讯有限公司 | Fly figure instructional terminal |
| CN106209818A (en) * | 2016-07-06 | 2016-12-07 | 上海电机学院 | A kind of wireless interactive electronic whiteboard conference 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 |
| CN107219962A (en) * | 2017-05-24 | 2017-09-29 | 苏州品美信息科技有限公司 | A kind of modularized touch control projection blackboard |
| CN107728926A (en) * | 2017-10-31 | 2018-02-23 | 四川长虹教育科技有限公司 | It is a kind of to realize double method and system for touching communication mode in electronic whiteboard |
| CN108829281A (en) * | 2018-05-23 | 2018-11-16 | 中山全播网络科技有限公司 | A kind of acquisition analytic method of interactive electric whiteboard file data |
| CN109101132A (en) * | 2018-08-07 | 2018-12-28 | 锐达互动科技股份有限公司 | A kind of method that conventional teaching is switched fast with electronic white board projection teaching |
| CN109298691A (en) * | 2018-09-25 | 2019-02-01 | 锐达互动科技股份有限公司 | A kind of teaching equipment management method |
| CN110609647A (en) * | 2019-09-02 | 2019-12-24 | 海宁钟江智能科技有限公司 | Wireless capacitance touch projection type whiteboard interactive system and method thereof |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9027015B2 (en) * | 2004-06-04 | 2015-05-05 | Steelcase, Inc. | Interactive communication system having an integrated key drive system |
| GB2443010B (en) * | 2006-10-10 | 2009-09-02 | Promethean Technologies Group | Interactive display system |
| CN101877180A (en) * | 2009-11-18 | 2010-11-03 | 北京同方瑞博数字技术有限公司 | Multi-media electronic reciprocal teaching system |
| CN102109971A (en) * | 2010-12-14 | 2011-06-29 | 桂林电子科技大学 | Slide projector showing system capable of wirelessly transmitting plotting information |
| CN201892929U (en) * | 2010-12-17 | 2011-07-06 | 深圳市卓怡恒通电脑科技有限公司 | Electronic whiteboard system and electronic whiteboard pen sleeve |
| CN201993923U (en) * | 2011-01-07 | 2011-09-28 | 深圳市巨龙科教高技术股份有限公司 | Multimedia interactive teaching machine |
| CN201966938U (en) * | 2011-03-01 | 2011-09-07 | 世盟科信（北京）国际科技发展有限公司 | Device matched with PC (personal computer) wireless transmission |
| CN202331846U (en) * | 2011-11-21 | 2012-07-11 | 北京中科昊普科技有限公司 | Audio and video playing system based on electronic whiteboard |
-
2011
- 2011-11-21 CN CN201110371963.9A patent/CN103123752B/en not_active Expired - Fee Related
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