CN202331846U - Audio and video playing system based on electronic whiteboard - Google Patents
Audio and video playing system based on electronic whiteboard Download PDFInfo
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- CN202331846U CN202331846U CN2011204654196U CN201120465419U CN202331846U CN 202331846 U CN202331846 U CN 202331846U CN 2011204654196 U CN2011204654196 U CN 2011204654196U CN 201120465419 U CN201120465419 U CN 201120465419U CN 202331846 U CN202331846 U CN 202331846U
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- electronic whiteboard
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Abstract
The utility model discloses an audio and video playing system based on an electronic whiteboard. The system comprises a storage unit, an emitting board, a receiving board, a projector and the electronic whiteboard, wherein the emitting board is connected with the storage unit; the receiving board is respectively connected with the projector and the electronic whiteboard; the emitting board and the receiving board are wirelessly connected with each other; a touch screen is arranged on the electronic whiteboard and used for receiving single-point or multi-point touch or writing by a user, converting operation of the user into a coordinate signal and wirelessly sending the coordinate signal to the emitting board through the receiving board; the emitting board sends the received signal to the storage unit for resolving, calls corresponding audio and video data and wirelessly sends the audio and video data to the receiving board; and the corresponding audio and video data is decoded by the projector and then projected on the electronic whiteboard for playing.
Description
Technical field
The utility model relates to the audio frequency and video field, in particular to a kind of audio-video frequency playing system based on electronic whiteboard.
Background technology
In recent years, electronic whiteboard is more and more universal in Application in Teaching, and the interactive facility that electronic whiteboard brings is also by extensive approval.As everyone knows, electric whiteboard system is made up of the projector/weak point out-of-focus projection machine/ultrashort out-of-focus projection machine and the blank of band touch sensible (several kinds of technology such as resistance/ultrasound wave/infrared ray are arranged).What the model I in this product will solve is the wireless connections problem of short out-of-focus projection or ultrashort out-of-focus projection and touch (containing several kinds of technology such as the resistance/ultrasound wave/infrared ray) electric whiteboard system that blank forms.
Under the present electric whiteboard system applied environment, we need 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 be USB for electronic whiteboard and computer and be connected.This has strengthened workload and work difficulty undoubtedly; USB is because of receiving the restriction of usb protocol; The line that surpasses five meters need carry out conceptual design in addition; But applied environment exceeds this length (in the lecture theater, if electronic whiteboard is placed dais one side, adding that wiring need get around this consideration of track route) sometimes.
Basic now employing video cables (VGA)+audio cable+RS232 control line+USB cable of this use-pattern connects up simultaneously and accomplishes being connected of main frame (RS232 is by central controller controls) and electric whiteboard system.
The utility model content
The utility model provides a kind of audio-video frequency playing system based on electronic whiteboard, in order to widen the range of application that adopts the electronic whiteboard displaying video.
For achieving the above object, the utility model provides a kind of audio-video frequency playing system based on electronic whiteboard, and 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 constitute wireless connections;
Electronic whiteboard is provided with touch-screen; It is accepted user's single-point or multiple point touching or writes; And convert user's operation into coordinate signal and be wirelessly transmitted to expelling plate through dash receiver; Expelling plate is sent to storage unit with the signal that receives and resolves, and transfers corresponding audio, video data and be wirelessly transmitted to dash receiver through expelling plate, plays by being projected on the electronic whiteboard after projector's decoding.
In the above-described embodiments; Connecting under the normal state, after electronic whiteboard was opened, native system entered into running status; Expelling plate sends to dash receiver with the audio-video signal of storage unit (like PC or server) through wireless mode, and dash receiver passes to electronic whiteboard through signal wire and shows; The writer writes or touches through the touch-screen of electronic whiteboard; Signal passes to dash receiver through the usb signal line of touch-screen; Dash receiver is given expelling plate through wireless signal transfer, and expelling plate outputs to storage unit through USB, and storage unit is output as a new audio frequency and video image through handling; Being sent to projector through expelling plate and dash receiver projects on the electronic whiteboard and plays; Accomplish the interaction circulation of a video and touch/write, made the device that adopts the electronic whiteboard displaying video can the inconvenience of connecting up have been avoided in electronic whiteboard and storage unit wireless transmission and interaction in the scope of apart from each other.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the audio-video frequency playing system synoptic diagram based on electronic whiteboard of the utility model one embodiment;
Fig. 2 is the audio-video frequency playing system synoptic diagram based on electronic whiteboard of the utility model one preferred embodiment;
Fig. 3 is the audio frequency and video player method process flow diagram based on electronic whiteboard of the utility model one embodiment.
Embodiment
To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not paying the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
Fig. 1 is the audio-video frequency playing system synoptic diagram based on electronic whiteboard of the utility model one embodiment; 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 constitutes wireless connections with dash receiver 30;
In the above-described embodiments; Connecting under the normal state, after electronic whiteboard was opened, native system entered into running status; Expelling plate sends to dash receiver with the audio-video signal of storage unit (like PC or server) through wireless mode, and dash receiver passes to electronic whiteboard through signal wire and shows; The writer writes or touches through the touch-screen of electronic whiteboard; Signal passes to dash receiver through the usb signal line of touch-screen; Dash receiver is given expelling plate through wireless signal transfer, and expelling plate outputs to storage unit through USB, and storage unit is output as a new audio frequency and video image through handling; Being sent to projector through expelling plate and dash receiver projects on the electronic whiteboard and plays; Accomplish the interaction circulation of a video and touch/write, made the device that adopts the electronic whiteboard displaying video can the inconvenience of connecting up have been avoided in electronic whiteboard and storage unit wireless transmission and interaction in the scope of apart from each other.
Dash receiver connects through a USB wiring on the USB interface of projector, connects through another USB wiring on the USB interface of electronic whiteboard, and its power supply (like DC5V) is connected on the civil power plate; Audio-video interface (like VGAINPUT and L/R AUDIEO) is connected on the audio frequency and video input port (like VGA and audio input port) of TV.
The USB interface of emission version connects the USB interface of PC main frame, and the audio frequency and video input port connects the audio frequency and video delivery outlet of PC main frame, and its power supply (like DC5V) is connected to the civil power plate.
Fig. 2 is the audio-video frequency playing system synoptic diagram based on electronic whiteboard of the utility model one preferred embodiment; As shown in Figure 2; Expelling plate comprises first RF receiving and transmission module 101, first data conversion module 102, first usb interface module 103, WHDI transmitter module 104, a WHDI audio frequency and video module 105 and first protocol conversion module 106; First RF receiving and transmission module 101, first data conversion module 102 are connected with first usb interface module 103 successively; First usb interface module 103 is connected through the USB interface of USB wiring with storage unit 10; WHDI transmitter module 104, a WHDI audio frequency and video module 105 are connected with first protocol conversion module 106 successively, and the audio, video data input port 111 of first protocol conversion module 106 is connected with the audio, video data delivery outlet 112 of storage unit 10;
Dash receiver comprises second RF receiving and transmission module 201, second data conversion module 202, second usb interface module 203, WHDI receiver module 204, the 2nd WHDI audio frequency and video module 205 and second protocol conversion module 206; Second RF receiving and transmission module 201, second data conversion module 202 are connected with second usb interface module 203 successively; Second usb interface module 203 is connected through the USB interface of USB wiring with electronic whiteboard 50; WHDI receiver module 204, the 2nd WHDI audio frequency and video module 205 are connected with second protocol conversion module 206 successively, and the video data delivery outlet 210 of second protocol conversion module 206 is connected with the video data input port of projector 40;
Wherein, first RF receiving and transmission module 101 constitutes less radio-frequency with second RF receiving and transmission module 201 and is connected, and WHDI transmitter module 104 constitutes wireless audio and video with WHDI receiver module 204 and is connected.
As shown in Figure 2; The foregoing description can also comprise: first control module 107, first power adaptation module 108, first bus interface module 109 and central controller 110; Central controller 110, first bus interface module 109, first control module 107 connect successively; First control module 107 is connected with first power adaptation module 108; First power adaptation module 108 connects civil power, and first power adaptation module 108 is connected with first protocol conversion module 106 with WHDI transmitter module 104, a WHDI audio frequency and video module 105 respectively;
For example, the foregoing description also comprises: sound system 212 is connected with the audio output port 211 of second protocol conversion module.
Fig. 3 is the audio frequency and video player method process flow diagram based on electronic whiteboard of the utility model one embodiment.As shown in Figure 3, this method may further comprise the steps:
S102; Between storage unit and electronic whiteboard, set up the 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 constitute 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 through the touch-screen of electronic whiteboard, and converts user's operation into coordinate signal and be wirelessly transmitted to expelling plate through dash receiver, and expelling plate is sent to storage unit with the signal that receives and resolves;
S106 transfers corresponding audio, video data through storage unit and is wirelessly transmitted to dash receiver through expelling plate, plays by being incident upon on the electronic whiteboard after projector's decoding.
In the above-described embodiments; Connecting under the normal state, after electronic whiteboard was opened, native system entered into running status; Expelling plate sends to dash receiver with the audio-video signal of storage unit (like PC or server) through wireless mode, and dash receiver passes to electronic whiteboard through signal wire and shows; The writer writes or touches through the touch-screen of electronic whiteboard; Signal passes to dash receiver through the usb signal line of touch-screen; Dash receiver is given expelling plate through wireless signal transfer, and expelling plate outputs to storage unit through USB, and storage unit is output as a new audio frequency and video image through handling; Being sent to projector through expelling plate and dash receiver projects on the electronic whiteboard and plays; Accomplish the interaction circulation of a video and touch/write, made the device that adopts the electronic whiteboard displaying video can the inconvenience of connecting up have been avoided in electronic whiteboard and storage unit wireless transmission and interaction in the scope of apart from each other.
For example, between storage unit and electronic whiteboard, set up before the wireless audio and video data transmission step further comprising the steps of:
Behind the switch open of expelling plate, the WHDI transmitter module and first RF receiving and transmission module of expelling plate inside are supplied power, and send wireless starting-up signal through first RF receiving and transmission module:
After the second inner RF receiving and transmission module of dash receiver that is in accepting state received wireless starting-up signal, the open power supply that links to each other with projector was opened projector through the second communication bus, and the power supply of the WHDI receiver module of opening dash receiver is with to its power supply;
Second RF receiving and transmission module changes the interactive information that emission state is waited for the emitting electrons blank over to, and first radiofrequency emitting module changes accepting state over to.
For example, in electronic whiteboard received first setting-up time after writing, second RF receiving and transmission module changed accepting state again over to, receives the signal of writing of electronic whiteboard at any time.When electronic whiteboard when writing, the electronic whiteboard end is an emission state always.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 second RF receiving and transmission module does not receive signal in second setting-up time, close projector and power supply.Following class hour user forgets the switch (supposing to close the steel dais) of closing transmitting terminal, then receiving end latching (comprising projector and power unit) under the situation of 10 minutes no feedback informations of retrieval.
One of ordinary skill in the art will appreciate that: accompanying drawing is the synoptic diagram of an embodiment, and module in the accompanying drawing or flow process might not be that enforcement the utility model is necessary.
One of ordinary skill in the art will appreciate that: the module in the device among the 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 present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.
What should explain at last is: above embodiment is only in order to the technical scheme of explanation the utility model, but not to its restriction; Although the utility model has been carried out detailed explanation with reference to previous embodiment; Those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that previous embodiment is put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of essence disengaging the utility model embodiment technical scheme of relevant art scheme.
Claims (5)
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
Said expelling plate is connected with said storage unit, and said dash receiver is connected with said electronic whiteboard with said projector respectively, and said expelling plate and said dash receiver constitute wireless connections;
Said electronic whiteboard is provided with touch-screen; It is accepted user's single-point or multiple point touching or writes; And convert user's operation into coordinate signal and be wirelessly transmitted to said expelling plate through said dash receiver; Said expelling plate is sent to said storage unit with the signal that receives and resolves, and transfers corresponding audio, video data and be wirelessly transmitted to said dash receiver through said expelling plate, plays by being projected on the said electronic whiteboard after the decoding of said projector.
2. system according to claim 1 is characterized in that:
Said expelling plate comprises first RF receiving and transmission module, first data conversion module, first usb interface module, WHDI transmitter module, a WHDI audio frequency and video module and first protocol conversion module; Said first RF receiving and transmission module, said first data conversion module and said first usb interface module are connected successively; Said first usb interface module is connected with the USB interface of said storage unit through the USB wiring; Said WHDI transmitter module, a said WHDI audio frequency and video module are connected with said first protocol conversion module successively, and the audio, video data input port of said first protocol conversion module is connected with the audio, video data delivery outlet of said storage unit;
Said dash receiver comprises second RF receiving and transmission module, second data conversion module, second usb interface module, WHDI receiver module, the 2nd WHDI audio frequency and video module and second protocol conversion module; Said second RF receiving and transmission module, said second data conversion module and said second usb interface module are connected successively; Said second usb interface module is connected with the USB interface of said electronic whiteboard through the USB wiring; Said WHDI receiver module, said the 2nd WHDI audio frequency and video module are connected with said second protocol conversion module successively, and the audio, video data delivery outlet of said second protocol conversion module is connected with the audio, video data input port of said projector;
Wherein, said first RF receiving and transmission module constitutes less radio-frequency with said second RF receiving and transmission module and is connected, and said WHDI transmitter module constitutes wireless audio and video with said WHDI receiver module and is connected.
3. system according to claim 2 is characterized in that, also comprises:
First control module, first power adaptation module, first bus interface module and central controller; Said central controller, said first bus interface module, said first control module connect successively; Said first control module is connected with said first power adaptation module; Said first power adaptation module connects civil power, and said first power adaptation module is connected with said first protocol conversion module with said WHDI transmitter module, a said WHDI audio frequency and video module respectively;
Second control module, second bus interface module and second source adaptation module; Said second bus interface module is connected between said second control module and the said projector; Said second source adaptation module connects civil power, and said second control module is connected with said second protocol conversion module with said second data conversion module, said WHDI receiver module, said 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 said second protocol conversion module.
5. system according to claim 1 is characterized in that, said storage unit is PC main frame or server.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204654196U CN202331846U (en) | 2011-11-21 | 2011-11-21 | Audio and video playing system based on electronic whiteboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204654196U CN202331846U (en) | 2011-11-21 | 2011-11-21 | Audio and video playing system based on electronic whiteboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202331846U true CN202331846U (en) | 2012-07-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204654196U Withdrawn - After Issue CN202331846U (en) | 2011-11-21 | 2011-11-21 | Audio and video playing system based on electronic whiteboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202331846U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123752A (en) * | 2011-11-21 | 2013-05-29 | 北京中科昊普科技有限公司 | Audio-video playing system and method based on electronic whiteboard |
| CN103440789A (en) * | 2013-09-01 | 2013-12-11 | 四川东山教学设备有限责任公司 | Interactive multimedia teaching dust-free writing board |
| CN104809925A (en) * | 2015-04-13 | 2015-07-29 | 重庆工程职业技术学院 | Novel multi-media classroom |
| CN109963190A (en) * | 2017-12-22 | 2019-07-02 | 鸿富锦精密工业(武汉)有限公司 | Electronic whiteboard |
-
2011
- 2011-11-21 CN CN2011204654196U patent/CN202331846U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123752A (en) * | 2011-11-21 | 2013-05-29 | 北京中科昊普科技有限公司 | Audio-video playing system and method based on electronic whiteboard |
| CN103440789A (en) * | 2013-09-01 | 2013-12-11 | 四川东山教学设备有限责任公司 | Interactive multimedia teaching dust-free writing board |
| CN104809925A (en) * | 2015-04-13 | 2015-07-29 | 重庆工程职业技术学院 | Novel multi-media classroom |
| CN109963190A (en) * | 2017-12-22 | 2019-07-02 | 鸿富锦精密工业(武汉)有限公司 | Electronic whiteboard |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120711 Effective date of abandoning: 20141119 |
|
| RGAV | Abandon patent right to avoid regrant |