CN108156502A - A kind of method for improving paintbrush and word net cast synchronism - Google Patents
A kind of method for improving paintbrush and word net cast synchronism Download PDFInfo
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- CN108156502A CN108156502A CN201810011866.0A CN201810011866A CN108156502A CN 108156502 A CN108156502 A CN 108156502A CN 201810011866 A CN201810011866 A CN 201810011866A CN 108156502 A CN108156502 A CN 108156502A
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- 230000008569 process Effects 0.000 claims abstract description 7
- 230000009471 action Effects 0.000 claims description 8
- 238000013507 mapping Methods 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 12
- 239000003973 paint Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000009499 grossing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
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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
- H04N21/43—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
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
- H04N21/4312—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0481—Interaction techniques based on graphical user interfaces [GUI] based on specific properties of the displayed interaction object or a metaphor-based environment, e.g. interaction with desktop elements like windows or icons, or assisted by a cursor's changing behaviour or appearance
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
-
- 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
- H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
-
- 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
- H04N21/478—Supplemental services, e.g. displaying phone caller identification, shopping application
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- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Multimedia (AREA)
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- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electrically Operated Instructional Devices (AREA)
Abstract
The invention discloses a kind of methods for improving paintbrush and word net cast synchronism, include the following steps：Student side is to background request historical data and parses；Socket long connections are established at student side and teacher end；Teacher end automatic regular polling checks whether the content in current text input frame changes, if word changes, the text information in current text input frame is sent to student side in a manner of full dose；Mouse is pressed when teacher end to start to draw until mouse-up is drawn in stroke complete process, the pattern data information that current stroke has been drawn is sent to student side by the timing of teacher end in a manner of increment；Student side arranges the information received from backstage and teacher's termination and preserves in memory；Student side is drawn on the corresponding PPT pages or writing words.The invention enables net cast teacher end from start to end and the data of pilot process are transferred to student side in real time, synchronous with height, the mode of high real-time is smoothly shown.
Description
Technical field
The present invention relates to a kind of methods for improving net cast synchronism, and in particular to a kind of raising paintbrush and word video
The method of synchronism is broadcast live, belongs to internet video live broadcasting technical field.
Background technology
Nowadays live streaming platform is numerous, and direct seeding technique is quite ripe, and in educational live streaming software, teacher is likely to
While live streaming, by the way that software is broadcast live, in the enterprising row write words of PPT or draw, trace etc. operation, then how
Make these words either figure be quickly passed in real time student side allow student see rather than teacher paint one or
Write it is stiff after passage final figure or word are shown in student side suddenly, what the present invention solved is exactly
This problem, this product is in educational live streaming software using field, and word is drawn or write at teacher end on PPT documents,
High synchronism is communicated to student side, and student is allowed to see.
1st, the way of similar product currently on the market：
During live streaming, after teacher paints one or has write passage, triggering mouse-up action or
The action that person clicks confirming button can trigger the teaching software at teacher end the draw data of this unicursal or this passage
Data are sent to student side.
2nd, feature：
It is smaller to transmit data, final mapping result or final word segment are directly passed to student side, no
The midway data student side that drawing either word can be transmitted sees final drawing or word segments at a glance
According to.
3rd, shortcoming：
Shortcoming is shown on PPT suddenly it is also obvious that be exactly that drawing that student side is shown or word content are loftier
Either if one section of draw data teacher is while drawing or writing passage for passage, always in teaching and simultaneously
It does not paint this unicursal or writes this section of words, then on the PPT shown by content and student side that student is said with regard to teacher
Drawing or lteral data do not correspond to, after teacher has said a part of content, this passage or draw data are dashed forward
So it is shown on PPT, it is more awkward.
Therefore, a kind of method for improving paintbrush and word net cast synchronism is developed, allows teacher in the same of net cast
When word or draw data is made to be transferred in student side in real time when writing words on PPT are either drawn, then in student
End data smoothing shows that this method is not only very important, and also has important application prospect.
Invention content
The present invention has made improvements in view of the above-mentioned problems of the prior art, discloses a kind of raising paintbrush and word video
The method of synchronism is broadcast live.Make word or drawing number when writing words on PPT are either drawn while teacher is in live streaming
According to being transferred in student side in real time, word or draw data, from start to end and pilot process data in real time
Student side is transferred to, then data smoothing is shown in student side, is unlikely to seem excessively lofty.
In order to realize above-mentioned target, the technical solution adopted in the present invention is：
A kind of method for improving paintbrush and word net cast synchronism, which is characterized in that include the following steps：
S1, student side to background request historical data and parse, and perform step S2；
Socket long connections are established at S2, student side and teacher end, perform step S3；
S3, teacher end are drawn on PPT documents or writing words, teacher end judge the type of current operation, work as teacher
When holding to write text operation, step S4 is performed；When teacher end is mapping operation, step S5 is performed；When teacher end revocation or
When deleting drawing, text information, step S6 is performed；
S4, teacher end automatic regular polling check whether the content in current text input frame changes, if word occurs
Change, the text information in current text input frame in a manner of full dose is sent to student side, performs step S8；
S5, when teacher end press mouse start draw until mouse-up draw stroke complete process in, teacher end timing
The pattern data information that current stroke has been drawn in a manner of increment is sent to student side, performs step S8；
S6, draw when teacher end cancels previous action or delete, text information when, perform step S7；
S7, student side find the pictorial information or text information and delete it from memory in memory, perform step
Rapid S8；
S8, student side arrange the information received from backstage and teacher's termination and preserve in memory, perform step S9；
S9, student side are drawn on the corresponding PPT pages or writing words；
S10, student side and teacher end disconnect socket long connections.
The aforementioned method for improving paintbrush and word net cast synchronism, which is characterized in that in the step S4, word
Information includes but not limited to the following terms：Word content, text color, color clarity, character script, word font size, word
Starting position coordinates point, newline information, the region length and width numeric data of drawing letters, the line thickness of character script, word
The information of PPT documents depended on.
The aforementioned method for improving paintbrush and word net cast synchronism, which is characterized in that in the step S5, figure
Data information includes but is not limited to the following terms：The width of lines, the color of lines, color clarity, the shape of figure, drawing
Corresponding coordinate point, the depended on PPT document information of drawing.
The aforementioned method for improving paintbrush and word net cast synchronism, which is characterized in that the step S4 and step
In S5, the depended on PPT document information of drawing includes but not limited to the following terms：The width of PPT documents, the height of PPT documents,
The title of PPT documents, the total page number of PPT documents, PPT documents ID, PPT document length and width.
The aforementioned method for improving paintbrush and word net cast synchronism, which is characterized in that the step S4 and step
In S5, automatic regular polling Text Entry and timing send the time interval of the graphical information that this stroke has been drawn as 100ms extremely
300ms。
Compared with prior art, the invention has the beneficial effects that：
(1) it solving during educational live streaming is taught, teacher is drawing or on PPT when writing words,
The problem of teacher end is synchronous with the paintbrush or text information height of student side, high real-time so that the paintbrush or word of teacher
What information was capable of real-time high-efficiency is transmitted to student side, allows student viewing, is unlikely to generate teacher one and does not paint or one section of text
In the case that word has been write not yet, the phenomenon that student side whatever be can't see；
(2) teacher is avoided after painting one or having write passage, there is one on the PPT of student side suddenly
The situation that complete stroke or one section of complete word occur.
Description of the drawings
Fig. 1 is the flow chart of the method for improving paintbrush and word net cast synchronism of the present invention.
Specific embodiment
Make specific introduce to the present invention below in conjunction with the drawings and specific embodiments.
With reference to Fig. 1, the method for improving paintbrush and word net cast synchronism of the invention includes the following steps：
S1, student side to background request historical data and parse, and perform step S2；
If there is student side at teacher end in teaching way, midway enters direct broadcasting room, then has at this time been likely to teacher end
A part of figure has been drawn on PPT or has write a part of word, when student side has just enter into direct broadcasting room, has just first had to request history
Draw data and lteral data obtain, and the figure and the word of writing drawn on all PPT data by http request
Storage in memory, then arranges this partial data, this partial data is disposably plotted to the respective page of corresponding PPT
On.
Socket long connections are established at S2, student side and teacher end, perform step S3；
Socket long links are realized at student side and teacher end, and student side and teacher end is allow mutually to send out data information at any time,
And other side can receive corresponding data information, and socket long connections can be realized by this class libraries of socket.IO；
The effect of long connection is that teacher end and student side remain a network connection and do not turn off, when teacher end is sent out
When giving student side data information, student side immediately can obtain the data, will not lead to too big time delay.
S3, teacher end are drawn on PPT documents or writing words, teacher end judge the type of current operation, work as teacher
When holding to write text operation, step S4 is performed；When teacher end is mapping operation, step S5 is performed；When teacher end revocation or
When deleting drawing, text information, step S6 is performed；
S4, teacher end automatic regular polling check whether the content in current text input frame changes, if word occurs
Change, the text information in current text input frame in a manner of full dose is sent to student side, performs step S8；
When teacher writes word, whether content of the teacher end always in poll check current character input frame changes,
If word changes, then current word content is immediately sent to student side by teacher end in a manner of full dose, if
If word does not change, then the action for sending lteral data information is not triggered at teacher end, per the inspection of 200ms time intervals
It looks into once, the text information of transmission includes word content, text color, color clarity, character script, word font size, text
Word starting position coordinates point, newline information, the region length and width numeric data of drawing letters, character script line thickness and
The width of document PPT that the word is depended on, PPT height, PPT titles, PPT total page numbers, PPT length and width of id, PPT document etc.
Additional information, in order to accurately draw corresponding word in the respective page of respective document, while student side is just reception
To text information be stored in memory；
Full dose：Full dose mean every time send current text input frame in all text informations, such as once with
What is sent is " I am Chinese ", and then teacher end is added to " people " word again, then teacher end is sent to student next time
The content at end will be " I am Chinese the people ", and then student side all replaces " I am Chinese the people " this six words original
" I am Chinese " this five words.
S5, when teacher end press mouse start draw until mouse-up draw stroke complete process in, teacher end timing
The pattern data information that current stroke has been drawn in a manner of increment is sent to student side, performs step S8；
When Mouse-plot is pressed at teacher end, until mouse-up is drawn a picture and is completed, per 200ms this stroke
The pattern data information of drafting is sent to student side by way of increment, makes student side that can constantly receive teacher end and is painted
The data of the figure of system, pictorial information data include, the width of lines, the color of lines, color clarity, figure shape
(circle, ellipse, rectangle, straight line, curve), the width of document PPT that the corresponding coordinate point of drawing and the drawing are depended on,
PPT height, PPT titles, PPT total page numbers, PPT the additional informations such as length and width of id, PPT document, wherein the drawing institute being given to
The information function of the document PPT depended on it is consistent above；
Then the live streaming software at teacher end according to the shape of drawn figure come corresponding to the viewing software transmission of student side
Coordinate point data, for example, if being round, the coordinate data of transmission is center location coordinate and the radius length of the circle, if
What is drawn is straight line, then the data of transmission are the position coordinates of starting point and ending point, if what is drawn is rectangle, then transmission
Data are the position coordinates of rectangle starting point and the length of rectangle, the width information of rectangle, if what is drawn is curve, then transmission
Data be all coordinate points for being depicted as this curve set, in then student side is stored in the pictorial information received
In depositing；
Increment：Increment mean it is cumulative, such as if teacher end draw data altogether depict 1,2,3,4,5,6 this
Six points, then transmission data of the first time teacher end into the 200ms that student side is sent are 1,2 the two points, for the second time
Transmission data in 200ms are 3,4 the two points, and the transmission data in next 200ms are 5,6 the two points.
S6, draw when teacher end cancels previous action or delete, text information when, perform step S7；
S7, student side find the pictorial information or text information and delete it from memory in memory, perform step
Rapid S8；
When the action of some revocations is triggered at teacher end, for example document is deleted, removes document paintbrush, cancel certain unicursal,
Previous step is cancelled, deletes some word when actions, the id for the document that student side is depended on first by the drawing or word
(docid) number of pages (page) information of which page of the document that information and the drawing are depended on and the drawing or word
Unique id (drawid) information, find the data of the drawing or word in memory, then student side software is directly old
The content for the deletion that teacher is initiated at end is disposed from student side end memory, then rearranges the remaining data in memory,
Remainder data are repainted in the respective page in corresponding PPT documents.
S8, student side arrange the information received from backstage and teacher's termination and preserve in memory, perform step S9；
S9, student side are drawn on the corresponding PPT pages or writing words；
After receiving drawing or lteral data every time, corresponding data information is drawn out in student side at once, because such as
If fruit has continuous draw data transmission, the transmission intercal of data is 200ms, and the effect reached in this way is, if teacher end
If used time 1S draws straight line or curve, can be drawn 5 times at the viewing end of student could form this line, so seemingly this
Bar line is dynamic formation, if 10S being spent to write passage if teacher end, then student side, which forms this section of word, to be needed to receive
To and draw 50 times, in this way when teacher end is deleted or adds word, the display mode of student side is just as teacher end one
It is smoother as the typing it out of a one word of word.
S10, student side and teacher end disconnect socket long connections.
As a preferred solution, in step S4, text information includes but not limited to the following terms：Word content, text
Word color, color clarity, character script, word font size, word starting position coordinates points, newline information, drawing letters
The information of PPT documents that region length and width numeric data, the line thickness of character script, word are depended on.
As a preferred solution, in step S5, pattern data information includes but not limited to the following terms：The width of lines
The depended on PPT document information of degree, the shape of the color of lines, color clarity, figure, the corresponding coordinate point drawn, drawing.
As a kind of more preferred scheme, in step S4 and step S5, the depended on PPT document information of drawing include but
It is not limited to the following terms：The width of PPT documents, the height of PPT documents, the title of PPT documents, PPT documents total page number, PPT
The length and width of ID, PPT document of document.
As a preferred solution, in step S4 and step S5, automatic regular polling Text Entry and timing send this pen
It is 100ms to 300ms, preferably 200ms to draw the time interval of graphical information drawn.
The information Json forms of Socket long connections transmission：
The transformat example of (1) word category information is as follows：
In conclusion the present invention education video live streaming during, when teacher live streaming while on PPT writing words
Make word when either drawing either draw data be transferred in student side in real time word or draw data, from start to
Terminate and pilot process data are transferred to student side in real time, then data smoothing shown in student side, it is unlikely
It is excessively lofty in seeming.
It should be noted that the foregoing is merely presently preferred embodiments of the present invention, it is not intended to limit the invention, it is all at this
Within the spirit and principle of invention, any modification, equivalent replacement, improvement and so on should be included in the protection model of the present invention
Within enclosing.
Claims (5)
- A kind of 1. method for improving paintbrush and word net cast synchronism, which is characterized in that include the following steps：S1, student side to background request historical data and parse, and perform step S2；Socket long connections are established at S2, student side and teacher end, perform step S3；S3, teacher end are drawn on PPT documents or writing words, teacher end judge the type of current operation, when teacher end is When writing text operation, step S4 is performed；When teacher end is mapping operation, step S5 is performed；When teacher end cancels or deletes When drawing, text information, step S6 is performed；S4, teacher end automatic regular polling check whether the content in current text input frame changes, if word changes, Text information in current text input frame in a manner of full dose is sent to student side, performs step S8；S5, when teacher end press mouse start draw until mouse-up draw stroke complete process in, teacher end timing work as The pattern data information that preceding stroke has been drawn is sent to student side in a manner of increment, performs step S8；S6, draw when teacher end cancels previous action or delete, text information when, perform step S7；S7, student side find the pictorial information or text information and delete it from memory in memory, perform step S8；S8, student side arrange the information received from backstage and teacher's termination and preserve in memory, perform step S9；S9, student side are drawn on the corresponding PPT pages or writing words；S10, student side and teacher end disconnect socket long connections.
- 2. the method according to claim 1 for improving paintbrush and word net cast synchronism, which is characterized in that the step In rapid S4, text information includes but not limited to the following terms：Word content, text color, color clarity, character script, text Word font size, word starting position coordinates point, newline information, the region length and width numeric data of drawing letters, character script line The information of PPT documents that width, word are depended on.
- 3. the method according to claim 1 for improving paintbrush and word net cast synchronism, which is characterized in that the step In rapid S5, pattern data information includes but not limited to the following terms：The width of lines, the color of lines, color clarity, figure Shape, corresponding coordinate point, the depended on PPT document information of drawing drawn.
- 4. the method for improving paintbrush and word net cast synchronism according to Claims 2 or 3, which is characterized in that institute It states in step S4 and step S5, the depended on PPT document information of drawing includes but not limited to the following terms：The width of PPT documents, The height of PPT documents, the title of PPT documents, the total page number of PPT documents, PPT documents ID, PPT document length and width.
- 5. the method according to claim 1 for improving paintbrush and word net cast synchronism, which is characterized in that the step In rapid S4 and step S5, the time interval that automatic regular polling Text Entry sends the graphical information that this stroke has been drawn with timing is 100ms to 300ms.
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| CN109067885A (en) * | 2018-08-14 | 2018-12-21 | 北京大米科技有限公司 | painting line synchronization system and method |
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| CN115190340A (en) * | 2021-04-01 | 2022-10-14 | 华为终端有限公司 | Live broadcast data transmission method, live broadcast equipment and medium |
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