CN103123752A - 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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- CN103123752A CN103123752A CN2011103719639A CN201110371963A CN103123752A CN 103123752 A CN103123752 A CN 103123752A CN 2011103719639 A CN2011103719639 A CN 2011103719639A CN 201110371963 A CN201110371963 A CN 201110371963A CN 103123752 A CN103123752 A CN 103123752A
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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 the audio frequency and video fields, in particular to a kind of audio-video frequency playing system based on electronic whiteboard and method.
Background technology
In recent years, the application of electronic whiteboard in teaching is more and more universal, and the interactive facility that electronic whiteboard brings is also extensively approved.As everyone knows, electric whiteboard system is comprised of the blank of projector/short focus projector/ultrashort focus projector and band touch sensible (resistance/capacitance/ultrasound wave/several technology such as infrared ray are arranged).What the model I in this product will solve is the wireless connections problem of the electric whiteboard system of short out-of-focus projection or ultrashort out-of-focus projection and the formation of touch (containing resistance/capacitance/ultrasound wave/several technology such as infrared ray) blank.
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 need increase tone frequency channel wire, need to be for electronic whiteboard USB with computer and connect.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 the 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 now basic to be adopted video cables (VGA)+audio cable+RS232 control line+USB cable to connect up simultaneously to complete main frame (RS232 is by central controller controls) to be connected connection with electric whiteboard system.
Summary of the invention
The invention provides a kind of audio-video frequency playing system based on electronic whiteboard and method, in order to widen the range of application that adopts the 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 consist of 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 is wirelessly transmitted to expelling plate by dash receiver, expelling plate is sent to storage unit with the signal that receives and resolves, and transfer corresponding audio, video data and be wirelessly transmitted to dash receiver by expelling plate, play by being projected on electronic whiteboard after projector's decoding.
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:
Set up the wireless audio and video data transmission between storage unit and electronic whiteboard, wherein, storage unit is connected with expelling plate, electronic whiteboard is connected with dash receiver, expelling plate and dash receiver consist of wireless connections, and dash receiver is connected with projector, projector with image projecting on electronic whiteboard;
Accept user's single-point or multiple point touching or write by the touch-screen of electronic whiteboard, and user's operation is converted to coordinate signal is wirelessly transmitted to expelling plate by dash receiver, expelling plate is sent to storage unit with the signal that receives and resolves;
Transfer corresponding audio, video data by storage unit and be wirelessly transmitted to dash receiver by expelling plate, play by being incident upon on electronic whiteboard after projector's decoding.
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 with 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, the writer writes or touches 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, being sent to projector through expelling plate and dash receiver projects on electronic whiteboard and plays, completed the interaction circulation of a video and touch/write, make the device that adopts the electronic whiteboard displaying video can wireless transmission and interaction in the scope of apart from each other with electronic whiteboard and storage unit, avoided the inconvenience of wiring.
Description of drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or description of the Prior Art, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying 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.Based on the embodiment in the present invention, those of ordinary skills belong to the scope of protection of the invention not paying the every other embodiment that obtains under the creative work prerequisite.
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 consists of wireless connections with dash receiver 30;
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 with 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, the writer writes or touches 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, being sent to projector through expelling plate and dash receiver projects on electronic whiteboard and plays, completed the interaction circulation of a video and touch/write, make the device that adopts the electronic whiteboard displaying video can wireless transmission and interaction in the scope of apart from each other with electronic whiteboard and storage unit, avoided the inconvenience of wiring.
Dash receiver connects on the USB interface of projector by a USB wiring, and on 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 emission version connects the USB interface of PC main frame, the audio frequency and video delivery outlet of audio frequency and video input port connection 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 be connected usb interface module 103 and connect successively, the first usb interface module 103 is connected by the USB interface of USB wiring with storage unit 10, WHDI transmitter module 104, the one WHDI audio frequency and video module 105 be connected protocol conversion module 106 and connect successively, 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 with the secondary USB interface module successively and is connected, secondary USB interface module 203 is connected by the USB interface of USB wiring with electronic whiteboard 50, WHDI receiver module 204, the 2nd WHDI audio frequency and video module 205 is connected with the second protocol modular converter successively and is connected, the video data input port of the video data delivery outlet 210 of second protocol modular converter 206 and projector 40 is connected,
Wherein, the first radio-frequency (RF) receiving and transmission module 101 be connected radio-frequency (RF) receiving and transmission module 201 and consist of less radio-frequencies and connect, WHDI transmitter module 104 is connected with the WHDI receiver module and is consisted of wireless audio and video and connect.
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 207 and 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, set up the wireless audio and video data transmission between storage unit and electronic whiteboard, wherein, storage unit is connected with expelling plate, electronic whiteboard is connected with dash receiver, expelling plate and dash receiver consist of wireless connections, and dash receiver is connected with projector, projector with image projecting on electronic whiteboard;
S104 accepts user's single-point or multiple point touching or writes by the touch-screen of electronic whiteboard, and user's operation is converted to coordinate signal is wirelessly transmitted to expelling plate by dash receiver, and expelling plate is sent to storage unit with the signal that receives and resolves;
S106 transfers corresponding audio, video data by storage unit and is wirelessly transmitted to dash receiver by expelling plate, plays by being incident upon on electronic whiteboard after projector's decoding.
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 with 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, the writer writes or touches 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, being sent to projector through expelling plate and dash receiver projects on electronic whiteboard and plays, completed the interaction circulation of a video and touch/write, make the device that adopts the electronic whiteboard displaying video can wireless transmission and interaction in the scope of apart from each other with electronic whiteboard and storage unit, avoided the inconvenience of wiring.
For example, further comprising the steps of before setting up the wireless audio and video data transmission step between storage unit and electronic whiteboard:
After the switch open of expelling plate, to WHDI transmitter module and the power supply of the first radio-frequency (RF) receiving and transmission module of expelling plate inside, and send wireless starting-up signal by the first radio-frequency (RF) receiving and transmission module:
After the second radio-frequency (RF) receiving and transmission module that is in the dash receiver inside of accepting state received wireless starting-up signal, the open power supply that is connected with projector was opened projector by the second communication bus, and the power supply of the WHDI receiver module of opening dash receiver is with to its power supply;
The second radio-frequency (RF) receiving and transmission module changes the interactive information that emission state is waited for the electron emission blank over to, and the first radiofrequency emitting module changes accepting state over to.
For example, in the first setting-up time after the electronic whiteboard reception is write, the second radio-frequency (RF) receiving and transmission module changes accepting state again over to, receives at any time the signal of writing of electronic whiteboard.When writing, the electronic whiteboard end is emission state always when electronic whiteboard.In 5 milliseconds after electronic whiteboard is write end, the electronic whiteboard end can change accepting state over to, 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 of closing transmitting terminal (suppose to close steel dais), receiving end in the situation that retrieval 10 minutes without feedback information latching (comprising projector and power unit).
One of ordinary skill in the art will appreciate that: accompanying drawing is the schematic diagram of an embodiment, and 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 according to embodiment and be distributed in the device of 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.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment, the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme that previous embodiment is put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of embodiment of the present invention technical scheme.
Claims (9)
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 consist of 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 is wirelessly transmitted to described expelling plate by described dash receiver, described expelling plate is sent to described storage unit with the signal that receives and resolves, and transfer corresponding audio, video data and be wirelessly transmitted to described dash receiver by described expelling plate, play by being projected on described electronic whiteboard after the decoding of described projector.
2. system according to claim 1 is characterized in that:
described expelling plate comprises the first radio-frequency (RF) receiving and transmission module, the first data conversion module, the first usb interface module, the 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 be connected the first usb interface module and connect successively, described the first usb interface module is connected with the USB interface of described storage unit by the USB wiring, described WHDI transmitter module, a described WHDI audio frequency and video module be connected the first protocol conversion module and connect successively, 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, the secondary USB interface module, the 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 be connected the secondary USB interface module and connect successively, described secondary USB interface module is connected with the USB interface of described electronic whiteboard by the USB wiring, described WHDI receiver module, described the 2nd WHDI audio frequency and video module be connected the second protocol modular converter and connect successively, the audio, video data input port of the audio, video data delivery outlet of described second protocol modular converter and described projector is connected,
Wherein, described the first radio-frequency (RF) receiving and transmission module be connected the second radio-frequency (RF) receiving and transmission module and consist of less radio-frequency and connect, described WHDI transmitter module be connected the WHDI receiver module and consist of wireless audio and video and connect.
3. system according to claim 2, 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.
4. 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.
5. system according to claim 1, is characterized in that, described storage unit is PC main frame or server.
6. the audio frequency and video player method based on electronic whiteboard, is characterized in that, comprises the following steps:
Set up the wireless audio and video data transmission between storage unit and electronic whiteboard, wherein, described storage unit is connected with expelling plate, described electronic whiteboard is connected with dash receiver, described expelling plate and described dash receiver consist of wireless connections, described dash receiver is connected with projector, described projector with image projecting on described electronic whiteboard;
Accept user's single-point or multiple point touching or write by the touch-screen of described electronic whiteboard, and user's operation is converted to coordinate signal is wirelessly transmitted to described expelling plate by described dash receiver, described expelling plate is sent to described storage unit with the signal that receives and resolves;
Transfer corresponding audio, video data by described storage unit and be wirelessly transmitted to described dash receiver by described expelling plate, play by being incident upon on described electronic whiteboard after the decoding of described projector.
7. method according to claim 6, is characterized in that, and is further comprising the steps of before setting up the wireless audio and video data transmission step between storage unit and electronic whiteboard:
After the switch open of described expelling plate, to WHDI transmitter module and the power supply of the first radio-frequency (RF) receiving and transmission module of described expelling plate inside, and send wireless starting-up signal by described the first radio-frequency (RF) receiving and transmission module:
After the second radio-frequency (RF) receiving and transmission module that is in the dash receiver inside of accepting state receives described wireless starting-up signal, the open power supply that is connected with projector, open described projector by the second communication bus, 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 changes the interactive information that emission state is waited for the electron emission blank over to, and described the first radiofrequency emitting module changes accepting state over to.
8. method according to claim 7, is characterized in that, in the first setting-up time after described electronic whiteboard reception is write, described the second radio-frequency (RF) receiving and transmission module changes accepting state again over to.
9. method according to claim 8, 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.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110371963.9A CN103123752B (en) | 2011-11-21 | 2011-11-21 | Audio-video playing system and method based on electronic whiteboard |
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| CN201110371963.9A CN103123752B (en) | 2011-11-21 | 2011-11-21 | Audio-video playing system and method based on electronic whiteboard |
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| CN103123752A true CN103123752A (en) | 2013-05-29 |
| CN103123752B CN103123752B (en) | 2014-11-19 |
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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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| CN105225545A (en) * | 2015-10-14 | 2016-01-06 | 深圳市飞图视讯有限公司 | Fly figure instructional terminal |
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| 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 |
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| 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 |
| 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 |
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| 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 |
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| CN103123752B (en) | 2014-11-19 |
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