CN104394473A - Multimedia transmission method and device - Google Patents
Multimedia transmission method and device Download PDFInfo
- Publication number
- CN104394473A CN104394473A CN201410675994.7A CN201410675994A CN104394473A CN 104394473 A CN104394473 A CN 104394473A CN 201410675994 A CN201410675994 A CN 201410675994A CN 104394473 A CN104394473 A CN 104394473A
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- CN
- China
- Prior art keywords
- screenshot picture
- image information
- data stream
- multimedia data
- screenshotss
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
- H04N21/47217—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for controlling playback functions for recorded or on-demand content, e.g. using progress bars, mode or play-point indicators or bookmarks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
- H04N21/4333—Processing operations in response to a pause request
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
- H04N21/4334—Recording operations
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Human Computer Interaction (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention discloses a multimedia transmission method and device. The method includes the steps: receiving multimedia data stream transmitted by a projection transmitting end; displaying image information of the multimedia data stream on a display interface; intercepting the image information to obtain a screenshot picture; transmitting the screenshot picture to a preset display terminal. The method and the device are used for displaying courseware of the projection transmitting end on the local or nonlocal preset display terminal in real time.
Description
Technical field
The present invention relates to Internet technical field, particularly a kind of method of multimedia transmission and device.
Background technology
Through the development of intelligent terminal in recent years, intelligent terminal is also widely used in teaching.Such as, teacher can realize real time education one to one by intelligent terminal (being called for short projection transmitting terminal) with non-local students; Courseware can also be sent on projector equipment by projection transmitting terminal by teacher, shows courseware content, impart knowledge to students by projector equipment.
Teacher is when imparting knowledge to students, and teacher holds the multimedia file of full screen display courseware, and multimedia file is sent to projector equipment with the form of multimedia data stream.Projector equipment receiving multimedia data stream, and transfer multimedia data stream to image and show.Now, the terminal equipment (be called for short and preset display terminal) of student cannot see this multimedia file in this locality, because multimedia data stream can take massive band width when transmitting, and normal bandwidth cannot support the transmission of multimedia data stream.Therefore, when imparting knowledge to students, multimedia file during teachers ' teaching cannot be sent to the default display terminal in this locality or other places by projection transmitting terminal in real time.
Summary of the invention
The embodiment of the present invention provides a kind of method and device of multimedia transmission, in order to show the courseware of projection transmitting terminal in real time at local or nonlocal default display terminal.
The invention provides a kind of method of multimedia transmission, for control end, comprising: receive the multimedia data stream that projection transmitting terminal sends; The image information of described multimedia data stream is shown at display interface; Image information described in screenshotss obtains screenshot picture; Described screenshot picture is sent to default display terminal.
Screenshot picture is obtained by carrying out screenshotss to the image information of the multimedia data stream shown at display interface, and screenshot picture is sent to default display terminal, avoid because multimedia data stream needs to take massive band width when transmitting and cannot transmit, achieving and can show projection transmitting terminal courseware in real time at local or nonlocal default display terminal.
Described method also comprises: receive predetermined registration operation instruction, and described predetermined registration operation instruction is used for image information described in screenshotss and obtains screenshot picture, and described screenshot picture is sent to default display terminal.
By predetermined registration operation instruction snapshot as information acquisition screenshot picture, teacher can be made to annotate and comment on courseware or after emphasis mark, initiatively select the courseware content sending to default display terminal.Achieve and select courseware content to send to default display terminal.
Described method also comprises: when image information described in screenshotss obtains screenshot picture, suspend the image information of the described multimedia data stream of display at display interface.
When snapshot is as information acquisition screenshot picture, illustrate that teacher needs emphasis to explain to this courseware content, displays image information is suspended at display interface, can when teacher carries out emphasis explanation to this courseware content, make the diversion of student on the default display terminal of student, improve the efficiency of teaching of teacher.
The described multimedia data stream receiving projection transmitting terminal and send, comprising: when image information described in screenshotss obtains screenshot picture, suspends the multimedia data stream receiving projection transmitting terminal and send.
Suspend the multimedia data stream receiving projection transmitting terminal and send, the network bandwidth taken when can save receiving multimedia data stream, improves the transmission speed sending screenshot picture to default display terminal.
A device for multimedia transmission, for control end, comprising: multimedia reception module, for receiving the multimedia data stream that projection transmitting terminal sends; Display module, for showing the image information of described multimedia data stream at display interface; Screen capture module, obtains screenshot picture for image information described in screenshotss; Sending module, for sending described screenshot picture to default display terminal.
Described device also comprises: command reception module, and for receiving predetermined registration operation instruction, described predetermined registration operation instruction is used for image information described in screenshotss and obtains screenshot picture, and described screenshot picture is sent to default display terminal.
Described device also comprises: suspend module, for when image information described in screenshotss obtains screenshot picture, suspends the image information of the described multimedia data stream of display at display interface.
Described multimedia reception module, comprising: suspend unit, for when image information described in screenshotss obtains screenshot picture, suspends the multimedia data stream receiving projection transmitting terminal and send.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from specification, or understand by implementing the present invention.Object of the present invention and other advantages realize by structure specifically noted in write specification, claims and accompanying drawing and obtain.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, together with embodiments of the present invention for explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:
The flow chart of the method for a kind of multimedia transmission that Fig. 1 provides for the embodiment of the present invention.
Fig. 2 is the flow chart of the method for a kind of multimedia transmission in the embodiment of the present invention one.
The structural representation of the device of a kind of multimedia transmission that Fig. 3 provides for the embodiment of the present invention.
The structural representation of the device of the another kind of multimedia transmission that Fig. 4 provides for the embodiment of the present invention.
The structural representation of multimedia reception module in the device of a kind of multimedia transmission that Fig. 5 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
As shown in Figure 1, a kind of method of multimedia transmission is embodiments provided, for control end.Concrete implementation step is as follows:
In a step 101, the multimedia data stream that projection transmitting terminal sends is received.
In one embodiment, wherein, multimedia data stream, comprising: at least one data flow in video data stream, image data stream, office data flow, PDF (portable file format) data flow and PPT (PowerPoint software) data flow.
In one embodiment, step 101 also can be implemented as: when snapshot is as information acquisition screenshot picture, suspends the multimedia data stream receiving projection transmitting terminal and send.Suspend the multimedia data stream receiving projection transmitting terminal and send, the network bandwidth taken when can save receiving multimedia data stream, improves the transmission speed sending screenshot picture to default display terminal.
In a step 102, in the image information of display interface display multimedia data stream.
In step 103, snapshot is as information acquisition screenshot picture.
At step 104, screenshot picture is sent to default display terminal.
In one embodiment, the method also can be embodied as: in steps A 1, receives predetermined registration operation instruction, and predetermined registration operation instruction is used for snapshot as information acquisition screenshot picture, and screenshot picture is sent to default display terminal.Wherein, predetermined registration operation instruction, comprising: click button default on projection transmitting terminal display interface, click on projection transmitting terminal with one or more instructions in the physical button of screenshotss instruction and double-click projection transmitting terminal display interface.By predetermined registration operation instruction snapshot as information acquisition screenshot picture, teacher can be made to annotate and comment on courseware or after emphasis mark, initiatively select the courseware content sending to default display terminal.Achieve and select courseware content to send to default display terminal.
In one embodiment, the method also can be embodied as: in step bl is determined., when snapshot is as information acquisition screenshot picture, suspends the image information of display multimedia data stream at display interface.When snapshot is as information acquisition screenshot picture, illustrate that teacher needs emphasis to explain to this courseware content, displays image information is suspended at display interface, can when teacher carries out emphasis explanation to this courseware content, make the diversion of student on the default display terminal of student, improve the efficiency of teaching of teacher.
Embodiments provide a kind of method of multimedia transmission, screenshot picture is obtained by carrying out screenshotss to the image information of the multimedia data stream shown at display interface, and screenshot picture is sent to default display terminal, avoid because multimedia data stream needs to take massive band width when transmitting and cannot transmit, achieving and can show projection transmitting terminal courseware in real time at local or nonlocal default display terminal.
Illustrate how in the project content realizing show the transmission of projection transmitting terminal on default display terminal below by specific embodiment.
Embodiment one
As shown in Figure 2, the embodiment of the present invention one provides a kind of method of multimedia transmission, for control end, concrete implementation step is as follows: wherein, and multimedia data stream is projection video stream, and control end is projector equipment, projection transmitting terminal is teacher side, and default display terminal is student side.
In step 201, the projection video stream that projection transmitting terminal sends is received.
Projector equipment device receives the projection video stream of the courseware that teacher side sends by iserver (a kind of transmission of video agreement, this agreement can only receive video flowing, converts video flowing to image and shows).
In step 202., in the image information of display interface display projection video stream.
The image information of the courseware content that teacher side sends is shown in the image that projector equipment is thrown in.
In step 203, receive predetermined registration operation instruction, predetermined registration operation instruction is used for snapshot as information acquisition screenshot picture, and screenshot picture is sent to default display terminal.
User clicks the screenshotss instruction in teacher side, and screenshotss instruction is sent to projector equipment by teacher side.Projector equipment receives screenshotss instruction.Wherein, predetermined registration operation instruction, comprising: click button default on projection transmitting terminal display interface, click on projection transmitting terminal with one or more instructions in the physical button of screenshotss instruction and double-click projection transmitting terminal display interface.
In step 204, snapshot is as information acquisition screenshot picture.
The image information of the courseware content that the image that projector equipment screenshotss are thrown in shows, obtains the screenshot picture of now courseware content.
In step 205, the image information of display projection video stream is suspended at display interface.
When snapshot is as information acquisition screenshot picture, in the image that projector equipment is thrown in, suspend the image information of the courseware content that display teacher side sends.
In step 206, the projection video stream receiving projection transmitting terminal and send is suspended.
When snapshot is as information acquisition screenshot picture, projector equipment suspends the projection video stream receiving the courseware that teacher side sends.
In step 207, screenshot picture is sent to default display terminal.
Projector equipment sends the screenshot picture of the now courseware content obtained to student side, and in student side, show the screenshot picture of now courseware content.
The embodiment of the present invention one, screenshot picture is obtained by carrying out screenshotss to the image information of the projection video stream shown at display interface, and screenshot picture is sent to default display terminal, avoid because projection video stream needs to take massive band width when transmitting and cannot transmit, achieve and can show projection transmitting terminal courseware in real time at local or nonlocal default display terminal, and by when snapshot is as information acquisition screenshot picture, suspend the projection video stream receiving projection transmitting terminal and send, improve the transmission speed sending screenshot picture to default display terminal, the image information of display projection video stream is suspended at display interface, can when teacher carries out emphasis explanation to courseware content, ensure that the diversion of student is in student side, improve the efficiency of teaching of teacher.
As shown in Figure 3, embodiments provide a kind of device of multimedia transmission, for control end, comprising:
Multimedia reception module 301, for receiving the multimedia data stream that projection transmitting terminal sends.
Display module 302, for the image information at display interface display multimedia data stream.
Screen capture module 303, for snapshot as information acquisition screenshot picture.
Sending module 304, for sending screenshot picture to default display terminal.
As shown in Figure 4, this device also comprises:
Command reception module 401, for receiving predetermined registration operation instruction, predetermined registration operation instruction is used for snapshot as information acquisition screenshot picture, and screenshot picture is sent to default display terminal.
Suspend module 402, for when snapshot is as information acquisition screenshot picture, suspend the image information of display multimedia data stream at display interface.
As shown in Figure 5, multimedia reception module 301 comprises:
Suspend unit 501, for when snapshot is as information acquisition screenshot picture, suspend the multimedia data stream receiving projection transmitting terminal and send.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store and optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (8)
1. a method for multimedia transmission, is characterized in that, for control end, comprising:
Receive the multimedia data stream that projection transmitting terminal sends;
The image information of described multimedia data stream is shown at display interface;
Image information described in screenshotss obtains screenshot picture;
Described screenshot picture is sent to default display terminal.
2. the method for claim 1, is characterized in that, described method also comprises:
Receive predetermined registration operation instruction, described predetermined registration operation instruction is used for image information described in screenshotss and obtains screenshot picture, and described screenshot picture is sent to default display terminal.
3. the method for claim 1, is characterized in that, described method also comprises:
When image information described in screenshotss obtains screenshot picture, suspend the image information of the described multimedia data stream of display at display interface.
4. the method for claim 1, is characterized in that, the described multimedia data stream receiving projection transmitting terminal and send, comprising:
When image information described in screenshotss obtains screenshot picture, suspend the multimedia data stream receiving projection transmitting terminal and send.
5. a device for multimedia transmission, is characterized in that, for control end, comprising:
Multimedia reception module, for receiving the multimedia data stream that projection transmitting terminal sends;
Display module, for showing the image information of described multimedia data stream at display interface;
Screen capture module, obtains screenshot picture for image information described in screenshotss;
Sending module, for sending described screenshot picture to default display terminal.
6. device as claimed in claim 5, it is characterized in that, described device also comprises:
Command reception module, for receiving predetermined registration operation instruction, described predetermined registration operation instruction is used for image information described in screenshotss and obtains screenshot picture, and described screenshot picture is sent to default display terminal.
7. device as claimed in claim 5, it is characterized in that, described device also comprises:
Suspend module, for when image information described in screenshotss obtains screenshot picture, suspend the image information of the described multimedia data stream of display at display interface.
8. device as claimed in claim 5, it is characterized in that, described multimedia reception module, comprising:
Suspend unit, for when image information described in screenshotss obtains screenshot picture, suspend the multimedia data stream receiving projection transmitting terminal and send.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410675994.7A CN104394473A (en) | 2014-11-21 | 2014-11-21 | Multimedia transmission method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410675994.7A CN104394473A (en) | 2014-11-21 | 2014-11-21 | Multimedia transmission method and device |
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| Publication Number | Publication Date |
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| CN104394473A true CN104394473A (en) | 2015-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410675994.7A Pending CN104394473A (en) | 2014-11-21 | 2014-11-21 | Multimedia transmission method and device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105808187A (en) * | 2016-03-04 | 2016-07-27 | 天脉聚源（北京）教育科技有限公司 | Teaching resource processing method and apparatus |
| CN109167986A (en) * | 2018-09-04 | 2019-01-08 | 黔东南民族职业技术学院 | A kind of teaching projection method and system |
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| CN103514220A (en) * | 2012-06-29 | 2014-01-15 | 深圳市快播科技有限公司 | Video image retrieval method, device and system based on multi-screen interactive scene |
| US20140040937A1 (en) * | 2009-10-06 | 2014-02-06 | At&T Intellectual Property I, L.P. | Remote viewing of multimedia content |
| CN103927909A (en) * | 2014-04-29 | 2014-07-16 | 南京数模微电子有限公司 | Interactive teaching system and method of touch type mobile terminal |
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Patent Citations (4)
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| US20140040937A1 (en) * | 2009-10-06 | 2014-02-06 | At&T Intellectual Property I, L.P. | Remote viewing of multimedia content |
| CN103248939A (en) * | 2012-02-03 | 2013-08-14 | 海尔集团公司 | Method and system for achieving synchronous display of multiple screens |
| CN103514220A (en) * | 2012-06-29 | 2014-01-15 | 深圳市快播科技有限公司 | Video image retrieval method, device and system based on multi-screen interactive scene |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105808187A (en) * | 2016-03-04 | 2016-07-27 | 天脉聚源（北京）教育科技有限公司 | Teaching resource processing method and apparatus |
| CN105808187B (en) * | 2016-03-04 | 2019-05-24 | 天脉聚源（北京）教育科技有限公司 | A kind of teaching resource processing method and processing device |
| CN109167986A (en) * | 2018-09-04 | 2019-01-08 | 黔东南民族职业技术学院 | A kind of teaching projection method and system |
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Application publication date: 20150304 |
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