CN106919333A - The recording method and device of written contents on electronic writing board - Google Patents
The recording method and device of written contents on electronic writing board Download PDFInfo
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- CN106919333A CN106919333A CN201710092117.0A CN201710092117A CN106919333A CN 106919333 A CN106919333 A CN 106919333A CN 201710092117 A CN201710092117 A CN 201710092117A CN 106919333 A CN106919333 A CN 106919333A
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- 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
- G06F3/0488—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 using a touch-screen or digitiser, e.g. input of commands through traced gestures
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- 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
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
- G06F3/0428—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by sensing at the edges of the touch surface the interruption of optical paths, e.g. an illumination plane, parallel to the touch surface which may be virtual
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- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Drawing Aids And Blackboards (AREA)
- Position Input By Displaying (AREA)
- User Interface Of Digital Computer (AREA)
Abstract
The invention discloses a kind of recording method and device for written contents on electronic writing board, it is related to infrared touch panel field, the method includes：The ratio of the area gross area corresponding with the written contents for determining to be wiped free of region in written contents, and the written contents corresponding display time for being wiped free of region；Default target ratio is searched according to the display time；Compare the ratio and the target ratio again, judge whether to need to preserve this page of written contents；If the ratio is more than the target ratio, the written contents are recorded as one page writing on the blackboard；Otherwise, do not record.Such user is without clicking on the corresponding button or icon wiped and preserve, it becomes possible to realizes automatic record and the preservation of writing on the blackboard content, it is ensured that the continuity of operation of user, also allows for sharing for writing on the blackboard content.
Description
Technical field
The present invention relates to infrared touch panel field, and in particular to a kind of record side for written contents on electronic writing board
Method and device.
Background technology
At present, electronic writing board is widely used in teaching.Fig. 1 is the structural representation of electronic writing board in correlation technique
Figure, as shown in figure 1, electronic writing board includes clipboard 11 and is arranged in clipboard 11 and tactile with what computer 13 was electrically connected with
Screen is touched, touch-screen includes being set in the infrared touch frame 12 of the surrounding of clipboard 11, and the infrared touch frame 12 is provided with for recognizing
The infrared emission of touch operation is received to pipe, and the written contents that computer can be in simultaneous display and record clipboard.When with hand
Finger, chalk, lettering pen or other touch objects on electronic writing board during written contents, touch-screen by touch objects on the touchscreen
The corresponding touch track of touch coordinate changes into electric signal transmission to computer, and computer recording touch track simultaneously shows touch rail
The corresponding written contents of mark.
Wherein, to realize the erasing to written contents or preservation function, the side of clipboard 11 is set and the electricity of computer 13
Property connection function button 14, or, set on touch-screen it is corresponding erasing or preserve icon.
But in actual use, when user needs to wipe written contents or preserved operation, either individually
The design of configuration button or corresponding function icon, user must go to click on respective keys or icon, often interrupt user
Continuity operation, influence Consumer's Experience.
The content of the invention
Embodiments of the invention provide a kind of recording method and device for written contents on electronic writing board, without point
Hit corresponding function button or icon, it becomes possible to realize automatic record and the preservation of written contents, it is ensured that the continuity of operation of user,
Lifting Consumer's Experience.
To reach above-mentioned purpose, the technical scheme that the embodiment of the present invention is used is：
A kind of first aspect, there is provided recording method for written contents on electronic writing board, the method comprising the steps of：
The ratio of the area gross area corresponding with the written contents for determining to be wiped free of region in written contents, and be wiped free of
The written contents corresponding display time in region；
Default target ratio is searched according to the display time；
If the ratio is more than the target ratio, the written contents are recorded as one page writing on the blackboard；Otherwise, do not record.
A kind of second aspect, there is provided tape deck for written contents on electronic writing board, the device includes：
Determining unit, the ratio of the area gross area corresponding with the written contents for determining to be wiped free of region in written contents
Value, and the written contents corresponding display time for being wiped free of region；
Searching unit, for searching default target ratio according to the display time；
The written contents, if being more than the target ratio for the ratio, are recorded as one page writing on the blackboard by recording unit；It is no
Then, do not record.
A kind of recording method and device for written contents on electronic writing board provided in an embodiment of the present invention, by true
Surely the ratio of the corresponding area of the written contents gross area corresponding with written contents in region is wiped free of, and is wiped free of region
The written contents corresponding display time；Then default target ratio is searched according to the display time；Compare the ratio again
Value and the target ratio, judge whether to need to record this page of written contents；If the ratio is more than the target ratio, will
The written contents are recorded as one page writing on the blackboard, otherwise, do not record.
So user need not click on corresponding function button or icon, can directly according to the comparing of the ratio and target ratio
As a result, automatic record and the preservation of written contents are realized, it is ensured that the continuity of operation of user, also allows for user and share in writing on the blackboard
Hold.
It should be appreciated that the general description of the above and detailed description hereinafter are only exemplary and explanatory, not
Can the limitation present invention.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be to that will make needed for embodiment description
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are some embodiments of the present invention, for ability
For the those of ordinary skill of domain, on the premise of not paying creative work, can also obtain other attached according to these accompanying drawings
Figure.
Fig. 1 is the structural representation of electronic writing board in correlation technique.
Fig. 2 is a kind of recording method schematic flow sheet for written contents on electronic writing board that the present invention is provided.
Fig. 3 is the detailed process schematic diagram of step S11 shown in Fig. 2.
Fig. 4 is the function curve schematic diagram of target ratio display time corresponding with the written contents for being wiped free of region.
Fig. 5 is that another function curve of target ratio display time corresponding with the written contents for being wiped free of region is illustrated
Figure.
A kind of schematic diagram for the tape deck of written contents on electronic writing board that Fig. 6 is provided for the present invention.
Fig. 7 is the schematic diagram of determining unit part shown in Fig. 6.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The all other embodiment obtained on the premise of creative work is not made, belongs to the scope of protection of the invention.
Design of the invention is as follows：Display time of the written contents being wiped free of on electronic writing board is more long, wipes book
The region for writing content is bigger, then it has been generally acknowledged that current page is useful information, it is necessary to be preserved with graphic form to it, in order to
The follow-up access to written contents with share.Further, inventor sets a curve：Target ratio and the book for being wiped free of region
The function curve between display time of the content on electronic writing board is write, the content on the curve is useful information, needed
Record and preserve.Therefore, the present invention is wiped free of the corresponding area of written contents and written contents pair in region by determination
The ratio of the gross area answered, so calculated according to above-mentioned function curve be wiped free of the written contents in region correspondence the display time under
Default target ratio；Then judge whether that recording the page writes interior with the target ratio by relatively more described ratio
Hold.
Embodiment one
Reference picture 2, Fig. 2 is that a kind of recording method flow for written contents on electronic writing board that the present invention is provided is illustrated
Figure.In order to the continuity for ensureing user is operated, in the case where corresponding function button or icon need not be clicked on, it becomes possible to realize book
Automatic record and the preservation of content are write, the embodiment of the present invention provides a kind of record side for written contents on electronic writing board
Method, can be applied in the electronic writing board shown in above-mentioned Fig. 1, can also be applied to contactor control device, interactive touch-control all-in-one medium.
The method may comprise steps of：
Step S11：The ratio of the area gross area corresponding with the written contents for determining to be wiped free of region in written contents, with
And it is wiped free of the written contents corresponding display time in region.
In this step, it is preferred to use the quantity of the corresponding touch coordinate point of written contents accounts for write mode under erasing mode
The ratio of number of the corresponding touch coordinate point of lower written contents, represents the area and the book that region is wiped free of in current written contents
Write the ratio of the corresponding gross area of content.Certainly the ratio can also be represented using other manner, is such as write under erasing mode
Content is corresponding to be wiped free of the area in the region area ratio for writing region corresponding with written contents under write mode, herein not
It is any limitation as.
Preferably, using being wiped free of in the corresponding touch coordinate point of the written contents in region, each touch coordinate point is in electronics
The average value of time is shown on clipboard to represent the written contents for the being wiped free of region corresponding display time.Certainly can be with
Weighted value or maximum of time etc. are shown on electronic writing board using each touch coordinate point, expression is wiped free of writing for region
The content corresponding display time, it is not especially limited herein.
On the basis of above-mentioned Fig. 2, the embodiment of the invention also discloses the detailed process schematic diagram of step S11, such as Fig. 3
Shown, step S11 may comprise steps of：
Step S111：Obtain touch coordinate point and touch area that touch objects are formed on electronic writing board；
Written contents on electronic writing board can be word, numeral, symbol, figure etc..In this step, to electronic writing board
Coordinate system is set up, for example：With the center of electronic writing board or any one angle as origin, horizontal direction is X-axis, and vertical direction is
Y-axis is right on electronic writing board to obtain written contents by detecting the touch operation occurred on touch-screen in electronic writing board
The touch coordinate point and touch area answered.
Step S112：It is write mode if current touch area is less than default touch area threshold, while recording book
The quantity N of the corresponding touch coordinate point of written contents under WriteMode1And each touch coordinate point writes moment tn；Otherwise, it is
Erasing mode, the quantity N of the corresponding touch coordinate point of written contents under record erasing mode2And the wiping of each touch coordinate point
Except moment Tn；
Step S113：By the quantity N of the corresponding touch coordinate point of written contents under erasing mode2With written contents under write mode
The quantity N of corresponding touch coordinate point1The ratio between, it is defined as in written contents being wiped free of the area and the written contents pair in region
The ratio P of the gross area answered.
Exemplary, default touch area threshold is set to S, the book that the touch area threshold S values are used in user
Write between an area and blackboard eraser area, and be stored in advance in a fixed storage space of computer, for calling at any time.
When user carries out touch operation using lettering pen on electronic writing board, now judge current touch area less than pre-
If touch area threshold S, then be write mode, while recording the quantity of the corresponding touch coordinate point of written contents under the pattern
N1And each touch coordinate point writes moment tn.When user carries out touch operation using blackboard eraser on electronic writing board, this
When judge that current touch area is then erasing mode more than default touchs area threshold S, while writing interior under recording the pattern
Hold the quantity N of corresponding touch coordinate point2And the erasing moment T of each touch coordinate pointn.It is then determined that quilt in written contents
The ratio for wiping the area gross area corresponding with the written contents in region is P=N2/N1, 0≤P≤1.
Step S114：Moment t is write according to each touch coordinate pointnWith erasing moment Tn, each touch coordinate point is existed
The average display time on electronic writing board is defined as being wiped free of the corresponding display time Δ t of written contents in region.
Specifically, display time Δ t is：
Wherein, m represents the quantity of the corresponding all touch coordinate points of one whole page of written contents, 1≤n≤m.
Example, it is assumed that user needs to wipe certain region on electronic writing board, and the region includes 5 touch coordinate points,
The display time of 5 touch coordinate points on electronic writing board is successively 20 minutes, 18 minutes, 15 minutes, 14 minutes, 10 minutes
Clock, then be wiped free of the corresponding display time Δ t=of written contents in region（20+18+15+14+10）/ 5=15.4 minutes.
It should be noted that touch operation of the user on electronic writing board is link up a mobile touch operation, example
Such as：Word is wiped using lettering pen writing words or using blackboard eraser, what is obtained in above-mentioned steps is touching for the coherent movement
The touch area of the initial touch position in operation is touched, for example：By lettering pen when preparing to write, lettering pen is pressed against electronics
Touch area when not moved on clipboard.Further, no matter user is in the touch operation of this coherent movement, touch surface
Whether product is less than default touch area threshold always, will all carry out written contents, so can quickly realize write mode and wiping
Except the switching between pattern.
It should be noted that, the embodiment of the present invention is not limited to using between touch area and default touch area threshold
Comparative result switch write mode and erasing mode.Unique hardware ID number can also be set to lettering pen or blackboard eraser,
Infrared emission receives and pipe is sensed and its touch track and corresponding hardware ID number is caught, and is sent to application software and can know
The computer of other different hardware ID, is switched fast with this between write mode and erasing mode, is not any limitation as herein.
Step S12：Default target ratio is searched according to the display time.
Wherein, target ratio is searched in default display time and target ratio mapping table, is wiped free of in the mapping table
Display time of the written contents in region on electronic writing board is bigger, and corresponding target ratio is smaller.This be due to：Writing
The bigger of region area is wiped free of in content, the display time that the part is wiped free of written contents is bigger, then it has been generally acknowledged that current
Page is useful information, it is necessary to be preserved with graphic form to it, in order to subsequently to the access of written contents with share.
Specifically, reference picture 4, Fig. 4 is the function of target ratio display time corresponding with the written contents for being wiped free of region
Curve synoptic diagram.Here, suppose that the display time most it is long be a class 45 minutes class periods, it is preferred that target ratio
It is in inverse proportion function relation, the target ratio with the written contents in the region corresponding display time on electronic writing board is wiped free of
It is to be wiped free of the written contents in region on electronic writing board under the corresponding display time, default ratio in computer should
Inverse proportion function relational expression is：
Wherein, K is constant, K>0；T0It is constant, represents that the touch coordinate point has T on electronic writing board0Time, 0≤
T0≤ for writing one whole page of time of content.That is Δ t ＞ T0, T0Presence be to prevent from causing frequently at the initial stage write
Preserve and newly-built page.P0It is constant, represents that the corresponding area of written contents for being wiped free of region accounts for written contents corresponding total
The ratio between area, 0≤P0＜ 1.That is P0＜≤1。P0Presence, mainly prevent interference from shaking, do not operate and cause for a long time
Preserve and newly-built page.
Further, it is wiped free of what is calculated in step S11 in the corresponding display time Δ t substitutions of the written contents in region
State in inverse proportion function relational expression, draw target ratio f (Δ t).
It should be noted that can be calculated using various feasible implementations in the embodiment of the present invention being wiped free of region
Written contents corresponding display time on electronic writing board, it is not any limitation as herein.
It should be noted that, in the embodiment of the present invention sets target ratio be wiped free of the written contents in region in e-book
It is therebetween the linear function of negative value in slope that can also set in inverse proportion function to write the corresponding display time on plate, ginseng
According to Fig. 5, Fig. 5 is another function curve schematic diagram of target ratio display time corresponding with the written contents for being wiped free of region,
As long as meeting the condition that target ratio reduces with the increase of the written contents for being wiped free of region corresponding display time, this
Place is not any limitation as.
Step S13：If the ratio is more than the target ratio, the written contents are recorded as one page writing on the blackboard；It is no
Then, do not record.
Specifically, if the ratio P is more than target ratio f, (Δ t), computer recording simultaneously preserves the book on current page
Content is write for one page writing on the blackboard, and by erasing after remaining written contents update onto newly-built page；Otherwise, do not record on current page
Written contents, and by erasing after remaining written contents update can be with to the written contents on current page, being now wiped free of region
It is user writing mistake or needs modification.
Further, can roughly using the area on function curve in Fig. 4 or Fig. 5（Dash area）Representing current page is
Useful information, it is necessary to recorded to it and preserved, and using writing mistake on the cartographic represenation of area current page under function curve
Miss or need the written contents of modification.
A kind of recording method and device for written contents on electronic writing board provided in an embodiment of the present invention, by true
Surely the ratio of the corresponding area of the written contents gross area corresponding with written contents in region is wiped free of, and is wiped free of region
The written contents corresponding display time；Then default target ratio is searched according to the display time；Compare the ratio again
Value and the target ratio, judge whether to need to record this page of written contents；If the ratio is more than the target ratio, will
The written contents are recorded as one page writing on the blackboard, otherwise, do not record.
So user need not click on corresponding function button or icon, can directly according to the comparing of the ratio and target ratio
As a result, automatic record and the preservation of written contents are realized, it is ensured that the continuity of operation of user, also allows for user and share in writing on the blackboard
Hold.
Embodiment two
According to the above-mentioned recording method for written contents on electronic writing board, the embodiment of the present invention also provides a kind of for electronics
The tape deck of written contents on clipboard, it is just of the invention for the tape deck of written contents on electronic writing board below
Embodiment is described in detail.
Reference picture 6, a kind of signal for the tape deck of written contents on electronic writing board that Fig. 6 is provided for the present invention
Figure, the device can be medium located at electronic writing board, contactor control device, interactive touch-control all-in-one, and the device can include：It is determined that
Unit 61, searching unit 62, recording unit 63.
Determining unit 61, the area total face corresponding with the written contents for determining to be wiped free of in written contents region
Long-pending ratio, and it is wiped free of the written contents corresponding display time in region.
Specifically, the ratio is preferably：The quantity of the corresponding touch coordinate point of written contents is accounted for and write under erasing mode
The ratio of number of the corresponding touch coordinate point of written contents under pattern.The display time is preferably：It is wiped free of writing for region
In the corresponding touch coordinate point of content, each touch coordinate point shows the average value of time on electronic writing board；Wherein, each is touched
The display time for touching coordinate points is erasing moment and the difference at the moment of writing of the touch coordinate point.
Reference picture 7, Fig. 7 is the schematic diagram of determining unit part shown in Fig. 6.Determining unit 61, specifically includes：
Acquiring unit 611, for obtaining touch coordinate point and touch area that touch objects are formed on electronic writing board；
Judging unit 612, is write mode if being less than default touch area threshold for the touch area, records institute
That states the quantity of the corresponding touch coordinate point of written contents under write mode and each touch coordinate point writes the moment；Otherwise,
It is erasing mode, records the quantity and each touch coordinate point of the corresponding touch coordinate point of written contents under the erasing mode
The erasing moment；
Computing unit 613, for by the quantity of touch coordinate point under the quantity of touch coordinate point under erasing mode and write mode
The ratio between be defined as the ratio, the average value of the difference at the erasing moment and the moment of writing of each touch coordinate point is defined as described
The display time.
Specifically, by setting up coordinate system, the touch occurred on touch-screen in detection electronic writing board to electronic writing board
To obtain, written contents are corresponding on electronic writing board to touch area and touch coordinate point for operation；And then obtain write mode
The quantity of the corresponding touch coordinate point of lower written contents and writing the moment for each touch coordinate point, write under erasing mode in
Hold the quantity of corresponding touch coordinate point and the erasing moment of each touch coordinate point；Then the ratio, described is determined again
The display time.
Searching unit 62, for searching default target ratio according to the display time.
Wherein, target ratio is searched in default display time and target ratio mapping table, is wiped free of in the mapping table
Display time of the written contents in region on electronic writing board is bigger, and corresponding target ratio is smaller.Preferably, target ratio
It is in inverse proportion function relation with the written contents in the region corresponding display time on electronic writing board is wiped free of.
Specifically, reference picture 5 or Fig. 6, the written contents for being wiped free of region are calculated in e-book by determining unit 61
Write the corresponding display time on plate, and substitute into above-mentioned inverse proportion function relational expression, draw target ratio.
The written contents, if being more than the target ratio for the ratio, are recorded as one page by recording unit 63
Writing on the blackboard；Otherwise, do not record.
Specifically, if the ratio is more than target ratio, computer recording simultaneously preserves the written contents on current page
Be one page writing on the blackboard, and by erasing after remaining written contents update on newly-built page；Otherwise, not record and write interior on current page
Hold, and by erasing after remaining written contents update on current page, the written contents for being now wiped free of region can be user
Clerical error needs modification.
On the more explanations for the tape deck of written contents on electronic writing board that the embodiment of the present invention two is provided
The specific descriptions for the recording method of written contents on electronic writing board of the offer of above-described embodiment one are may be referred to, its realization
Principle is similar with beneficial effect, no longer describes in detail herein.
For convenience of description, it is divided into various units with function during description apparatus above to describe respectively.Certainly, this is being implemented
The function of each unit can be realized in same or multiple softwares and/or hardware during invention.
One of ordinary skill in the art will appreciate that all or part of flow in realizing above-described embodiment method, Ke Yitong
Cross the related hardware of computer program instructions to complete, described program can be stored in a computer read/write memory medium,
The program upon execution, can include such as the flow in above-mentioned embodiment.Wherein, described storage medium can be disk, light
Disk, read-only memory（Read-Only Memory, ROM）Or random access memory（Random Access Memory,
RAM）Deng.
Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；Although with reference to foregoing each reality
Example is applied to be described in detail the present invention, it will be understood by those within the art that：It still can be to foregoing each
Technical scheme described in embodiment is modified, or carries out equivalent to which part or all technical characteristic；And
These modifications are replaced, and do not make the scope of the essence disengaging various embodiments of the present invention technical scheme of appropriate technical solution.
Claims (8)
1. a kind of recording method for written contents on electronic writing board, it is characterised in that the method comprising the steps of：
The ratio of the area gross area corresponding with the written contents for determining to be wiped free of region in written contents, and be wiped free of
The written contents corresponding display time in region；
Default target ratio is searched according to the display time；
If the ratio is more than the target ratio, the written contents are recorded as one page writing on the blackboard；Otherwise, do not record.
2. method according to claim 1, it is characterised in that specifically include：
The target ratio is searched in default display time and target ratio mapping table, wherein, described in the mapping table
The display time is bigger, and the corresponding target ratio is smaller.
3. method according to claim 2, it is characterised in that in the mapping table, the target ratio is aobvious with described
Show that the time is in inverse proportion function relation.
4. the method according to claim 1-3, it is characterised in that the area in region is wiped free of in the determination written contents
The ratio of the gross area corresponding with the written contents, and the written contents corresponding display time in region is wiped free of, specifically
Including：
Obtain the touch coordinate point on electronic writing board and touch area；
It is write mode if the touch area is less than default touch area threshold, records touch under the write mode
The quantity of coordinate points and each touch coordinate point write the moment；Otherwise, it is erasing mode, records and touch under the erasing mode
Touch the quantity of coordinate points and the erasing moment of each touch coordinate point；
The ratio of number of touch coordinate point under the quantity of touch coordinate point under erasing mode and write mode is defined as the ratio
Value, the display time is defined as by the average value of the difference at the erasing moment and the moment of writing of each touch coordinate point.
5. a kind of tape deck for written contents on electronic writing board, it is characterised in that including：
Determining unit, the ratio of the area gross area corresponding with the written contents for determining to be wiped free of region in written contents
Value, and the written contents corresponding display time for being wiped free of region；
Searching unit, for searching default target ratio according to the display time；
The written contents, if being more than the target ratio for the ratio, are recorded as one page writing on the blackboard by recording unit；It is no
Then, do not record.
6. device according to claim 5, it is characterised in that looked into default display time with target ratio mapping table
The target ratio is looked for, wherein, the bigger of time is shown described in the mapping table, the corresponding target ratio is smaller.
7. device according to claim 6, it is characterised in that in the mapping table, the target ratio is aobvious with described
Show that the time is in inverse proportion function relation.
8. the device according to claim 5-7, it is characterised in that the determining unit includes：
Acquiring unit, for obtaining the point of the touch coordinate on electronic writing board and touching area；
Judging unit, is write mode if being less than default touch area threshold for the touch area, records the book
The quantity of touch coordinate point and each touch coordinate point writes the moment under WriteMode；Otherwise, it is erasing mode, record is described
The erasing moment of the quantity of touch coordinate point and each touch coordinate point under erasing mode；
Computing unit, for by the ratio of number of touch coordinate point under the quantity of touch coordinate point under erasing mode and write mode
It is defined as the ratio, the average value of the difference at the erasing moment and the moment of writing of each touch coordinate point is defined as the display
Time.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710092117.0A CN106919333B (en) | 2017-02-21 | 2017-02-21 | Method and device for recording writing content on electronic writing board |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710092117.0A CN106919333B (en) | 2017-02-21 | 2017-02-21 | Method and device for recording writing content on electronic writing board |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107403411A (en) * | 2017-07-27 | 2017-11-28 | 广州视源电子科技股份有限公司 | Writing on the blackboard recording method, device, equipment and computer-readable recording medium |
| CN107423407A (en) * | 2017-07-27 | 2017-12-01 | 广州视源电子科技股份有限公司 | Education informations recording method, device, terminal and computer-readable recording medium |
| CN107506719A (en) * | 2017-08-18 | 2017-12-22 | 广州视源电子科技股份有限公司 | Teaching board display methods, device, equipment and computer-readable recording medium |
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