CN103778818A - Method and device for prompting spelling errors - Google Patents
Method and device for prompting spelling errors Download PDFInfo
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- CN103778818A CN103778818A CN201410025960.3A CN201410025960A CN103778818A CN 103778818 A CN103778818 A CN 103778818A CN 201410025960 A CN201410025960 A CN 201410025960A CN 103778818 A CN103778818 A CN 103778818A
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Abstract
The invention discloses a method and a device for prompting spelling errors. The method comprises steps of receiving ultrasonic waves emitted by a writing pen, and obtaining position change situations of the writing pen according to the ultrasonic waves; obtaining writing tracks of a user according to the position change situations of the writing pen, and recognizing the current written contents according to the writing tracks; judging whether the current written contents are correct, and performing error correction prompt on the current written contents in a projection mode if the current written contents are not correct. Therefore, by means of the technical scheme, spelling errors of the user can be detected timely, the user is prompted in a projection mode when spelling errors happen, and wrong spelling cannot form memory in the brain of the user.
Description
Technical field
The present invention relates to teach auxiliary apparatus field, relate in particular to a kind of method and device of pointing out clerical error.
Background technology
In daily life, user copies or when training book etc. writes operation, occurs as Chinese-character stroke mistake, letter spelling composition error, order of writing strokes mistake or format write mistake etc. unavoidably completing.And user oneself cannot recognize the clerical error of oneself conventionally in time, gradually easily in brain mistake write to formation deep impression.Therefore clerical error is more early found, more easily corrected user's bad writing style.
In addition, user, carrying out in mathematical problem training process, often can occur the low staging errors such as clerical mistake because of carelessness, but user cannot discover one's mistakes in time conventionally, is unfavorable for that user sums up lesson, eliminating error in time.
Summary of the invention
The object of the invention is to propose a kind of method and device of pointing out clerical error, can find in time user's clerical error, and with the mode reminding user clerical error of projection.
For reaching this object, the present invention by the following technical solutions:
One aspect of the present invention provides a kind of method of pointing out clerical error, comprising:
Receive the ultrasound wave of lettering pen transmitting, draw the change in location situation of lettering pen according to this ultrasound wave;
Drawn user's handwriting trace by the change in location situation of lettering pen, identify current written contents according to handwriting trace;
Judge that whether current written contents is write correctly, if not, carries out projection error correcting prompt to current written contents.
Wherein, describedly judge whether current written contents is write correctly, if not, before current written contents being carried out to projection error correcting prompt, also comprise: use camera to gather user's the picture of writing according to predeterminated frequency;
Describedly judge whether current written contents is write correctly, if not, current written contents is carried out to projection error correcting prompt, specifically comprises:
Determine that current written contents write completely, judge whether current written contents is write correctly, if not,, by described positional information of writing picture and draw current written contents, according to described positional information, current written contents is carried out to projection error correcting prompt.
Wherein, described definite current written contents has been write complete, comprising:
Whether the nib that detects lettering pen leaves current region of writing, and if so, determines current written contents and has write complete.
Wherein, describedly identify current written contents according to handwriting trace, comprising:
Obtain the unique point of writing according to handwriting trace, identify current written contents according to the unique point of writing; Described unique point of writing comprises: the structure of font composition, stroke initial/stop end points, presentation direction and write turning point.
Wherein, describedly identify current written contents according to handwriting trace, specifically comprise:
According to handwriting trace the identification current font of writing, the order of strokes observed in calligraphy and format write standard, described font comprises the result of Chinese character, letter spelling combination or mathematical operation;
Describedly judge that whether current written contents is write correctly, specifically comprises:
Judge whether the current font of writing, the order of strokes observed in calligraphy and format write standard mate with standard content corresponding in preset database; Or,
Whether the result that judges current mathematical operation of writing meets mathematical operation rule corresponding in preset database;
Described preset database comprises default local data base, or the network data base connecting by wireless network; Standard content in described database comprises font, the order of strokes observed in calligraphy, format write standard and mathematical operation rule, and described format write standard comprises the occupy-place on the four line three lattice pages of letter, letter spelling and the capital and small letter standard of letter.
Wherein, described judge current written contents whether write correct after, also comprise: if not, export default voice message signal and carry out bomp.
Wherein, described current written contents is carried out to projection error correcting prompt, be specially: white space projection goes out the default mark of makeing mistakes around current written contents;
Described current written contents is carried out to projection error correcting prompt after, also comprise:
In the time makeing mistakes mark described in user clicks, around current written contents, white space projection goes out corresponding correct content, and the projection form of described correct content comprises image or video; And/or play the explanation to correct content by audio frequency.
Wherein, described current written contents is carried out to projection error correcting prompt, be specially: white space projection goes out corresponding correct content around current written contents, and the projection form of described correct content comprises image or video.
Wherein, described current written contents is carried out to projection error correcting prompt after, also comprise:
When detecting that user revises when correct current written contents, carry out sure prompting, around revised context, white space projection goes out default correct mark;
In the time detecting that user revises mistake to current written contents, re-start projection error correcting prompt, go out the default mark of makeing mistakes with white space projection around revised context, and export default voice message signal.
The present invention also provides a kind of device of pointing out clerical error on the other hand, comprising:
Ultrasound wave receiver module, for receiving the ultrasound wave of lettering pen transmitting;
Data processing module, for draw the change in location situation of lettering pen according to this ultrasound wave, is drawn user's handwriting trace by the change in location situation of lettering pen;
Identification module, for identify current written contents according to handwriting trace, and judges whether current written contents is write correctly;
Projection reminding module, if incorrect for writing of current written contents, carries out projection error correcting prompt to current written contents.
Preferably, also comprise: image capture module, for gather user's the picture of writing according to predeterminated frequency;
Describedly judge whether current written contents is write correctly and comprise: determine that current written contents write completely, judge whether current written contents is write correctly;
Describedly current written contents is carried out to projection error correcting prompt comprise: by described positional information of writing picture and draw current written contents, according to described positional information, current written contents is carried out to projection error correcting prompt.
Preferably, described definite current written contents has been write complete, specifically comprises:
Whether the nib that detects lettering pen leaves current region of writing, and if so, determines current written contents and has write complete.
Preferably, describedly identify current written contents according to handwriting trace, comprising:
Obtain the unique point of writing according to handwriting trace, identify current written contents according to the unique point of writing; Described unique point of writing comprises: the structure of font composition, stroke initial/stop end points, presentation direction and write turning point.
Preferably, described identification module, specifically for identifying the current font of writing, the order of strokes observed in calligraphy and format write standard according to handwriting trace; And judge whether the current font of writing, the order of strokes observed in calligraphy and format write standard mate with standard content corresponding in preset database; Or whether the result that judges current mathematical operation of writing meets mathematical operation rule corresponding in preset database;
Described font comprises the result of Chinese character, letter spelling combination or mathematical operation;
Described preset database comprises default local data base, or the network data base connecting by wireless network; Standard content in described database comprises font, the order of strokes observed in calligraphy, format write standard and mathematical operation rule, and described format write standard comprises: the occupy-place on the four line three lattice pages of letter, letter spelling, the capital and small letter standard of letter.
Preferably, also comprise: voice module, if incorrect for writing of current written contents, export default voice message signal and carry out bomp.
Preferably, described projection reminding module, goes out the default mark of makeing mistakes specifically for white space projection around current written contents; And in the time makeing mistakes mark described in user clicks, around current written contents, white space projection goes out corresponding correct content, the projection form of described correct content comprises image or video;
Described voice module, also, in the time makeing mistakes mark described in user clicks, plays the explanation to correct content by audio frequency.
Preferably, described projection reminding module, if incorrect specifically for writing of current written contents, around current written contents, white space projection goes out corresponding correct content, the projection form of described correct content comprises image or video.
Preferably, described projection reminding module, also for after current written contents is carried out to projection error correcting prompt, when user revises when correct current written contents, carries out sure prompting, and around revised context, white space projection goes out default correct mark; And in the time that user revises mistake to current written contents, re-start projection error correcting prompt, go out the default mark of makeing mistakes with white space projection around revised context;
Described voice module, also, in the time that user revises mistake to current written contents, exports default voice message signal and carries out bomp.
Implement the embodiment of the present invention, there is following beneficial effect:
The embodiment of the present invention, by hyperacoustic change in location that draws lettering pen that transmits and receives, identifies user's handwriting trace according to the change in location of lettering pen, and then identifies the current written contents of user, and recognition accuracy is high; And if current written contents write incorrectly, point out user writing mistake by the mode of projection error correction, be convenient to user and find in time clerical error, avoid in user's brain, mistake being write and being formed memory.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing described below is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic flow sheet of a kind of method of pointing out clerical error of first embodiment of the invention.
Fig. 2 is the schematic diagram of letter, the occupy-place standard of letter spelling on the four line three lattice pages in first embodiment of the invention.
Fig. 3 is whether complete schematic diagram of the current written contents of judging of first embodiment of the invention.
Fig. 4 is the schematic flow sheet of a kind of method of pointing out clerical error of second embodiment of the invention.
Fig. 5 is the structural representation of a kind of device of pointing out clerical error of third embodiment of the invention.
Fig. 6 is the structural representation of a kind of device of pointing out clerical error of fourth embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing of the present invention, technical scheme in the embodiment of the present invention is carried out to clear, complete description, obviously, described embodiment is only a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skills obtain under the prerequisite of not making creative work, belongs to the scope of protection of the invention.
In conjunction with Fig. 1, the first embodiment of the present invention is described.
Fig. 1 is a kind of method flow diagram of pointing out clerical error of first embodiment of the invention, and details are as follows:
In the first embodiment, the lettering pen of user writing comprises pen core, trigger switch and ultrasound wave transmitter module, trigger switch and ultrasound wave transmitter module control linkage, and under idle state, the top of pen core does not contact with trigger switch; In the time that user uses this lettering pen to write, the top that pen core pressurized moves up to pen core can prop up trigger switch, controls ultrasound wave transmitter module transmitting ultrasound wave.
The position of ultrasonic probe, ultrasonic receiver is fixed, and can determine according to the ultrasound wave receiving the change in location situation of lettering pen, and the similar sonar technology of this principle, is not described further at this.Preferably, ultrasound wave transmitter module can be located to nib annex, with the change in location situation of Obtaining Accurate nib.In the present embodiment, the change in location situation of lettering pen is the change in location situation of nib.
In the first embodiment, the change in location situation of lettering pen is the change in location situation of nib, therefore can obtain according to the change in location situation of lettering pen user's handwriting trace, and then identify current written contents by handwriting trace.
This step specific implementation can be: obtain the unique point of writing according to handwriting trace, then identify current written contents according to the unique point of writing.Concrete can according to handwriting trace obtain font structure composition, stroke initial/stop end points, presentation direction and write the unique point that turning point etc. is write.
Further, can identify font, the order of strokes observed in calligraphy and the format write standard of user writing according to the unique point of writing.Font in the present embodiment can comprise the result of Chinese character, letter spelling combination or mathematical operation, the order of strokes observed in calligraphy can comprise the sequencing (writing again ' Pie ' as first write '-') of writing font, and format write standard can be included in occupy-place (as shown in Figure 2) and the capital and small letter standard of letter etc. on the four line three lattice pages.
In the present embodiment, the execution of step 102 can complete in this locality, also can be completed by cloud server, then execution result is turned back to this locality, can also first carry out in this locality, if local execution result be discrimination lower than default threshold value, then carried out by cloud server.Specific as follows:
Mode one, draw handwriting trace in this locality by the movement locus of lettering pen, and then identify current written contents according to handwriting trace.
Mode two, the movement locus of lettering pen is sent to cloud server, server draws user's handwriting trace according to the movement locus of lettering pen beyond the clouds, identify current written contents according to handwriting trace, then the current written contents identifying is returned to this locality.
Mode three, elder generation draw handwriting trace in this locality by the movement locus of lettering pen, identify current written contents according to handwriting trace, if local discrimination is lower than default threshold value, the movement locus of lettering pen is sent to cloud server, cloud server draws user's handwriting trace according to the movement locus of lettering pen, and then identify current written contents, finally recognition result is returned to this locality.
Wherein, mode two need to be connected cloud server by mode wireless networks such as 3G/wifi with mode three.
As a preferred implementation of the present invention, write when complete when definite current written contents, just start to judge whether current written contents is write correctly.In the present embodiment, can whether leave current region of writing by the nib that detects lettering pen, if so, determine current written contents and write complete.Specifically comprise two kinds of modes:
Mode one: before the present embodiment step 103, can use camera according to predeterminated frequency collection user's the picture of writing, whether the nib of writing lettering pen in picture that detects user leaves current region of writing, and if so, determines current written contents and has write complete.When user writing, homework book etc. need be placed in the scope that camera can take, in user writing process, camera gathers user's the picture of writing according to predeterminated frequency.If detect, user's the nib of lettering pen in picture of writing leaves current region of writing, and can determine current written contents and write complete.
Further, write when complete when determining current written contents, judged whether current written contents is write correctly, if not, can, by described positional information of writing picture and draw current written contents, carry out projection error correcting prompt according to described positional information to current written contents.
As a preferred implementation of the present embodiment, the filming frequency of camera can be made as to 0.5-1 per second and open photo, to lower the performance requirement to processor.
Mode two: judge that according to the change in location situation of lettering pen whether the nib of lettering pen leaves current region of writing, and if so, determines current written contents and has write complete.
Because conventionally user completes writing of a word or completes a phonetic or when the writing of numeral, there is an action of removing nib and leave current written contents, therefore this action based on user can determine that current written contents write complete.As shown in Figure 3, in the time detecting that the nib of lettering pen leaves dotted line frame region, can determine current written contents " in " write complete.
As a preferred implementation of the present embodiment, judge whether current written contents writes the following mode of correctly can taking: the current font of writing, the order of strokes observed in calligraphy and format write standard are compared with standard content corresponding in preset database, to judge whether the current font of writing, the order of strokes observed in calligraphy and format write standard write correctly.Concrete as judged, whether the result of the current Chinese character of writing, letter spelling combination or mathematical operation is correct, and the corresponding database preset comprises word standard, letter spelling standard and mathematical operation standard.Whether the format write that also can judge the order of writing strokes of the current Chinese character of writing or letter, letter spelling is write correctly, in corresponding preset database, also comprises the order of writing strokes standard of word and the format write standard of letter spelling.Or whether the result that judges current mathematical operation of writing meets mathematical operation rule corresponding in preset database; The corresponding mathematical operation rule that also comprises in preset database.According to user's actual need, also can be built-in more for judging the other standards content of current written contents in preset database, for example, built-in common semantic criteria etc., for judging semantic error (as " sorrow " mistake is written as " excellent anxious ").
It should be noted that, in the present embodiment, database can be both default local data base (this locality is used separately), can be also by the network data base of the mode wireless connections such as 3G/wifi.
By comparison, font, the order of strokes observed in calligraphy and the format write standard of writing if find do not mated with standard content corresponding in preset database, or result that write or mathematical operation does not meet mathematical operation rule corresponding in preset database, current written contents is carried out to projection error correcting prompt.
As a kind of preferred implementation of the present invention, in the time judging the clerical error of current written contents, the default mark of makeing mistakes is projected to surrounding's white space of current written contents.For example, the content of user writing is " 1+3=5 ", can carry out projection error correcting prompt on the side of the result of calculation of user writing " 5 ", as project "! " mark, write the particular location of makeing mistakes and makeing mistakes with reminding user, be convenient to user and find in time wrong writing.Preferably, in the present embodiment, in the time makeing mistakes mark described in user clicks, also can around current written contents, white space projection go out corresponding correct content, the projection form of described correct content comprises image or video; And/or play the explanation to correct content by audio frequency.Under which, make user have the process of an autonomous error detection, in the time that user does not know correct written contents, carry out again concrete guidance.
As another kind of preferred implementation of the present invention, when judging writing of current written contents when incorrect, also can directly the correct content of correspondence (correct result " 4 ") be projected to surrounding's white space of current written contents.
Further, as another preferred implementation of the present embodiment, judge current written contents and write when incorrect, also exportable default information of voice prompt is carried out bomp.For example send slight " d " sound, strengthen prompting effect.
By above-mentioned the first embodiment, according to the change in location of the ultrasonic analysis lettering pen of the lettering pen transmitting receiving, identify user's handwriting trace according to the change in location of lettering pen, and then identify current written contents; If writing of current written contents is incorrect, current written contents is carried out to projection error correcting prompt.Make user can immediately find clerical error, avoid in brain, mistake being write and being formed memory.Further, the present invention is transmitted and received and can be improved recognition accuracy by ultrasound wave, and the picture of writing of taking user by camera obtains current positional information of writing, and can improve the positional precision of projection error correcting prompt.The solution of the present invention is opened photo because the frequency of camera collection picture can be 0.5-1 per second, has alleviated the requirement to processor calculating processing power.If because relying on camera collection writes picture and identify current written contents and current positional information of writing, camera need to be taken with the speed of Millisecond the dynamic picture of user writing, this to calculation process ability require high.
In conjunction with Fig. 4, the second embodiment of the present invention is described, the method for teaching mainly for the operation of instant alerts pattern in a second embodiment, and increased user and revise the situation explanation of written contents.
In a second embodiment, details are as follows for the method flow of prompting clerical error:
The lettering pen that user uses in a second embodiment comprises pen core, trigger switch and ultrasound wave transmitter module, trigger switch and ultrasound wave transmitter module control linkage, and under idle state, the top of pen core does not contact with trigger switch; In the time that user uses this lettering pen to write, the top that pen core pressurized moves up to pen core can prop up trigger switch, controls acoustic emission module transmitting ultrasound wave.Ultrasonic probe, ultrasonic receiver is determined the change in location situation of lettering pen according to the ultrasound wave receiving.
In a second embodiment, the writing carrier such as similar homework book are placed in the scope that camera can take when user writing.In user writing process, camera gathers user's the picture of writing according to predeterminated frequency.In the present embodiment, the filming frequency of camera is made as to 0.5-1 per second and opens photo, to lower the performance requirement to processor.
In a second embodiment, whether the nib of writing lettering pen in picture by detection leaves current region of writing is determined the state of writing of current written contents, if so, determines current written contents and has write complete.As shown in Figure 3, in the time detecting the nib of lettering pen and leave dotted line frame region, can determine current written contents " in " write complete.
In the second embodiment, the execution of step 201-202, step 203-204 is not free successively to be limited.Be that lettering pen is launched ultrasound wave while writing, camera is to write picture according to the frequency collection of setting, and belongs to two processes of carrying out side by side.
Does step 205, judge that current written contents writes correctly? if so, not projection, otherwise, next step carried out.
In a second embodiment, comprise the current font of writing, the order of strokes observed in calligraphy and format write standard are compared with standard content corresponding in preset database, judge that whether the current font of writing, the order of strokes observed in calligraphy and format write standard be correct; Or whether whether the result that detects current mathematical operation of writing meets mathematical operation rule corresponding in preset database, correct to judge the result of current mathematical operation of writing.
It should be noted that, the preset database of the present embodiment can be both default local data base (this locality is used separately), can be also by the network data base of the mode wireless connections such as 3G/wifi.Standard content in described database comprises font, the order of strokes observed in calligraphy, format write standard and mathematical operation rule.According to user's actual need, also can be built-in more for judging the other standards content of current written contents in preset database, for example, built-in common semantic criteria etc.
Step 206 projects to the default mark of makeing mistakes surrounding's white space of current written contents.
For example, current order of writing strokes mistake, can be around the content of user writing mistake white space project "! " mark, write the particular location of makeing mistakes and makeing mistakes with reminding user, be convenient to user and find in time wrong writing.For another example, when user writing mathematical problem:
12
x 14
————
26
12
————
38
Owing to writing operation mistake, can user error write result " 26 " and " 38 " side project "! " mark.
Certainly, also can around current written contents, white space projection go out other default marks of makeing mistakes, as long as can play prompting user writing mistake.In the time makeing mistakes mark described in user clicks, around current written contents, white space projection goes out corresponding correct content, and the projection form of described correct content comprises image or video; And/or play the explanation to correct content by audio frequency.
As another preferred implementation of the present embodiment, also can around current written contents, the direct projection of white space go out corresponding correct content.
In the second embodiment, judge and revise whether correct concrete grammar and above-mentioned to judge whether current written contents writes correct principle identical, repeat no more.
In a second embodiment, default be correctly designated ' √ ', if user revises correctly, can project " √ " and identify revising around writing white space.For example, the result of calculation " 5 " in current written contents " 1+3=5 " is revised as " 4 " by user, original "! " mark disappearance, project " √ " mark on the side of revising writing.
In the present embodiment, if revise mistake, can revise white space around writing project "! " mark, and send slight " d " sound.For example, the result of calculation " 5 " in current written contents " 1+3=5 " is revised as " 3 " by user, original "! " mark disappearance, again project on modification writing " 3 " side "! " mark, and send slight " d " sound.
By above-mentioned the second embodiment, draw the change in location of lettering pen according to the ultrasonic analysis of the lettering pen transmitting receiving, identify user's handwriting trace according to the change in location of lettering pen, and then identify current written contents; If writing of current written contents is incorrect, current written contents is carried out to projection error correcting prompt.Make user can immediately find clerical error, avoid in user's brain, mistake being write and being formed memory.And when user writes and revises when correct mistake, the mark of the projection that upgrades in time, can deepen user to the impression of correctly writing, and user is produced the psychological hint of an encouragement simultaneously.Further, the present invention is transmitted and received and can be improved recognition accuracy by ultrasound wave, and the picture of writing of taking user by camera obtains current positional information of writing, and can improve the positional precision of projection error correcting prompt.The solution of the present invention is opened photo because the frequency of camera collection picture can be 0.5-1 per second, has alleviated the requirement to processor calculating processing power.
The embodiment of a kind of device of pointing out clerical error providing for the embodiment of the present invention below.The embodiment of described device and above-mentioned embodiment of the method belong to same design, and the detail content of detailed description not in the embodiment of device, can be with reference to said method embodiment.
Fig. 5 shows the structural representation of a kind of device of pointing out clerical error of third embodiment of the invention, is elaborated below.
Point out the device of clerical error to comprise at the 3rd embodiment: ultrasound wave receiver module 501, data processing module 502, identification module 503 and projection reminding module 504.
In the 3rd embodiment, ultrasound wave receiver module 501 position for lettering pen is fixed, for receiving the ultrasound wave of lettering pen transmitting.Lettering pen in the present embodiment comprises pen core, trigger switch and ultrasound wave transmitter module, trigger switch and ultrasound wave transmitter module control linkage, and described lettering pen is under idle state, and the top of pen core does not contact with trigger switch; In the time that user uses this lettering pen to write, pen core pressurized and then the top that moves up to pen core can prop up trigger switch, control acoustic emission module transmitting ultrasound wave.After the ultrasound wave that ultrasound wave receiver module 501 receives, send to data processing module 502.
In the 3rd embodiment, data processing module 502 can be determined the change in location situation of lettering pen with respect to ultrasound wave receiver module 501 according to this ultrasound wave, and then identifies user's handwriting trace.Preferably, in the present embodiment, the ultrasound wave transmitter module of lettering pen can be arranged on pen tip position, accurately to identify user's handwriting trace.
Particularly, identification module 503 can obtain the unique point of writing according to handwriting trace, identifies current written contents according to the unique point of writing.The unique point of writing in the present embodiment comprise font structure composition, stroke initial/stop end points, presentation direction and write turning point.Can identify font, the order of strokes observed in calligraphy and the format write standard of user writing according to writing feature point.Wherein font can comprise the result of Chinese character, letter spelling combination or mathematical operation; The order of strokes observed in calligraphy can comprise the sequencing (writing again ' Pie ' as first write '-') of writing font; Format write standard can be included in occupy-place (as shown in Figure 2) and the capital and small letter standard of letter etc. on the four line three lattice pages.
As a preferred implementation of the present embodiment, after identification module 503 identifies current written contents, the current font of writing, the order of strokes observed in calligraphy and format write standard are compared with standard content corresponding in preset database, to judge whether the current font of writing, the order of strokes observed in calligraphy and format write standard write correctly.Or whether whether the result that detects current mathematical operation of writing meets mathematical operation rule corresponding in preset database, correct to judge the result of current mathematical operation of writing.Described preset database comprises font, the order of strokes observed in calligraphy, format write standard and mathematical operation rule.According to user's actual need, also can be built-in more for judging current other standards content of writing in preset database, for example, built-in common semantic criteria etc.It should be noted that, above-mentioned preset database can be both default local data base (this locality is used separately), can be also by the network data base of the mode wireless connections such as 3G/wifi.
By comparison, if font, the order of strokes observed in calligraphy and the format write standard of writing if find do not mated with standard content corresponding in preset database, or the result of the mathematical operation of writing does not meet mathematical operation rule corresponding in preset database, send projection of messages to projection reminding module 504, so that current written contents is carried out to projection error correcting prompt.
As a preferred implementation of the present embodiment, identification module 503 need be determined current written contents and write when complete, just judges whether current written contents is write correctly, with the burden of mitigation system.Specifically can whether leave current region of writing by the nib that detects lettering pen, if so, determine current written contents and write complete realization.
Preferably, the device of the prompting clerical error of the present embodiment can comprise image capture module 505, for gather user's the picture of writing according to predeterminated frequency.Whether the user's that described identification module 503 can detected image acquisition module 505 gathers the nib of writing lettering pen in picture leaves current region of writing, if, determine current written contents and write completely, judge whether current written contents is write correctly.Can predeterminated frequency in the present embodiment be set to collection 0.5-1 per second and open photo, to reduce the performance requirement to processor.
Certainly, described identification module 503 also can judge that whether the nib of lettering pen leaves current region of writing, and if so, determines current written contents and has write complete according to the change in location situation of lettering pen.
As a preferred implementation of the present embodiment, the positional information of writing picture and draw current written contents that can gather according to image capture module 505, carries out projection error correcting prompt according to described positional information to current written contents.Than the mode of determining the positional information of current written contents according to ultrasound wave, can improve the positional precision of projection.
In the 3rd embodiment, projection reminding module 504 can white space projection go out the default mark of makeing mistakes around current written contents; For example, the content of user writing is " 1+3=5 ", can carry out projection error correcting prompt on the side of the result of calculation of user writing " 5 ", as project "! " mark, write the particular location of makeing mistakes and makeing mistakes with reminding user, be convenient to user and find in time wrong writing.Preferably, the present embodiment projection reminding module 504, also in the time makeing mistakes mark described in user clicks, also can white space projection go out corresponding correct content around current written contents, and the projection form of described correct content comprises image or video.Under which, make user have the process of an autonomous error detection, in the time that user does not know correct written contents, carry out again concrete guidance.
Or described projection reminding module 504 is in the time that writing of current written contents is incorrect, around current written contents, white space projection goes out corresponding correct content, and the projection form of described correct content comprises image or video.For example the correct content " 4 " of correspondence is projected to the side of writing incorrect current written contents " 5 ".
Further, in the present embodiment, described projection reminding module 504 also, for when detecting that user revises when correct current written contents, carries out sure prompting, and around revised context, white space projection goes out default correct mark, so that user is encouraged; In the time detecting that user revises mistake to current written contents, re-start projection error correcting prompt, go out the default mark of makeing mistakes with white space projection around revised context, reminding user is revised mistake.
For example, it is " friend " that user revises " frend ", original "! " mark disappearance, again project " √ " mark on " friend " side.If current content of writing " frend " is revised as " firend " by user, original "! " mark disappearance, again project on " firend " side "! " mark.
The structural representation of a kind of device of pointing out clerical error that as shown in Figure 6, Fig. 6 is fourth embodiment of the invention.In the 4th embodiment, described device not only comprises ultrasound wave receiver module 501, data processing module 502, identification module 503, projection reminding module 504 and image capture module 505, specifically, as described in above-mentioned the 3rd embodiment, also comprise voice module 506 and network connecting module 507.
If the voice module of the present embodiment 506 is incorrect for writing of current written contents, exports default voice message signal and carry out bomp; Also, in the time makeing mistakes mark described in user clicks, play the explanation to correct content by audio frequency; And in the time that user revises mistake to current written contents, export default voice message signal and carry out bomp.For example, user is current is written as " frend ", can judge writing of current written contents incorrect, sends slight " d " sound, reminding user clerical error.
The network connecting module 507 of the present embodiment is for connecting cloud server by the mode wireless network such as 3G/wifi, and by mode wireless network interconnection network databases such as 3G/wifi.
By the above embodiment of the present invention, analyze according to hyperacoustic transmitting and receiving the change in location that draws lettering pen, identify user's handwriting trace according to the change in location of lettering pen, and then identify current written contents, recognition accuracy is high; When detecting writing of current written contents when incorrect, current written contents is carried out to projection error correcting prompt, be convenient to user and find in time clerical error.Further, the present invention is transmitted and received and can be improved recognition accuracy by ultrasound wave, and the picture of writing of taking user by camera obtains current positional information of writing, and can improve the positional precision of projection error correcting prompt.The solution of the present invention is opened photo because the frequency of camera collection picture can be 0.5-1 per second, has alleviated the requirement to processor calculating processing power.
Above disclosed is only preferred embodiment of the present invention, certainly can not limit with this claim scope of the present invention, therefore, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., still belong to the scope that the present invention is contained.
Claims (18)
1. a method of pointing out clerical error, is characterized in that, comprising:
Receive the ultrasound wave of lettering pen transmitting, draw the change in location situation of lettering pen according to this ultrasound wave;
Drawn user's handwriting trace by the change in location situation of lettering pen, identify current written contents according to handwriting trace;
Judge that whether current written contents is write correctly, if not, carries out projection error correcting prompt to current written contents.
2. the method for prompting clerical error according to claim 1, it is characterized in that describedly judge whether current written contents is write correctly, if not, before current written contents being carried out to projection error correcting prompt, also comprise: use camera to gather user's the picture of writing according to predeterminated frequency;
Describedly judge whether current written contents is write correctly, if not, current written contents is carried out to projection error correcting prompt, specifically comprises:
Determine that current written contents write completely, judge whether current written contents is write correctly, if not,, by described positional information of writing picture and draw current written contents, according to described positional information, current written contents is carried out to projection error correcting prompt.
3. the method for prompting clerical error according to claim 2, is characterized in that, described definite current written contents has been write complete, comprising:
Whether the nib that detects lettering pen leaves current region of writing, and if so, determines current written contents and has write complete.
4. the method for prompting clerical error according to claim 1, is characterized in that, describedly identifies current written contents according to handwriting trace, comprising:
Obtain the unique point of writing according to handwriting trace, identify current written contents according to the unique point of writing; Described unique point of writing comprises: the structure of font composition, stroke initial/stop end points, presentation direction and write turning point.
5. the method for prompting clerical error according to claim 4, is characterized in that, describedly identifies current written contents according to handwriting trace, specifically comprises:
According to handwriting trace the identification current font of writing, the order of strokes observed in calligraphy and format write standard, described font comprises the result of Chinese character, letter spelling combination or mathematical operation;
Describedly judge that whether current written contents is write correctly, specifically comprises:
Judge whether the current font of writing, the order of strokes observed in calligraphy and format write standard mate with standard content corresponding in preset database; Or,
Whether the result that judges current mathematical operation of writing meets mathematical operation rule corresponding in preset database;
Described preset database comprises default local data base, or the network data base connecting by wireless network; Standard content in described database comprises font, the order of strokes observed in calligraphy, format write standard and mathematical operation rule, and described format write standard comprises the occupy-place on the four line three lattice pages of letter, letter spelling and the capital and small letter standard of letter.
6. the method for prompting clerical error according to claim 1, is characterized in that, described judge current written contents whether write correct after, also comprise: if not, export default voice message signal and carry out bomp.
7. the method for prompting clerical error according to claim 6, is characterized in that, described current written contents is carried out to projection error correcting prompt, is specially: around current written contents, white space projection goes out the default mark of makeing mistakes;
Described current written contents is carried out to projection error correcting prompt after, also comprise:
In the time makeing mistakes mark described in user clicks, around current written contents, white space projection goes out corresponding correct content, and the projection form of described correct content comprises image or video; And/or play the explanation to correct content by audio frequency.
8. the method for prompting clerical error according to claim 6, it is characterized in that, described current written contents is carried out to projection error correcting prompt, be specially: around current written contents, white space projection goes out corresponding correct content, and the projection form of described correct content comprises image or video.
9. the method for prompting clerical error according to claim 6, is characterized in that, described current written contents is carried out to projection error correcting prompt after, also comprise:
When detecting that user revises when correct current written contents, carry out sure prompting, around revised context, white space projection goes out default correct mark;
In the time detecting that user revises mistake to current written contents, re-start projection error correcting prompt, go out the default mark of makeing mistakes with white space projection around revised context, and export default voice message signal.
10. a device of pointing out clerical error, is characterized in that, comprising:
Ultrasound wave receiver module, for receiving the ultrasound wave of lettering pen transmitting;
Data processing module, for draw the change in location situation of lettering pen according to this ultrasound wave, is drawn user's handwriting trace by the change in location situation of lettering pen;
Identification module, for identify current written contents according to handwriting trace, and judges whether current written contents is write correctly;
Projection reminding module, if incorrect for writing of current written contents, carries out projection error correcting prompt to current written contents.
The device of 11. prompting clerical errors according to claim 10, is characterized in that, also comprises:
Image capture module, for gathering user's the picture of writing according to predeterminated frequency;
Describedly judge whether current written contents is write correctly and comprise: determine that current written contents write completely, judge whether current written contents is write correctly;
Describedly current written contents is carried out to projection error correcting prompt comprise: by described positional information of writing picture and draw current written contents, according to described positional information, current written contents is carried out to projection error correcting prompt.
The device of 12. prompting clerical errors according to claim 11, is characterized in that, described definite current written contents has been write complete, specifically comprises:
Whether the nib that detects lettering pen leaves current region of writing, and if so, determines current written contents and has write complete.
The device of 13. prompting clerical errors according to claim 10, is characterized in that, describedly identifies current written contents according to handwriting trace, comprising:
Obtain the unique point of writing according to handwriting trace, identify current written contents according to the unique point of writing; Described unique point of writing comprises: the structure of font composition, stroke initial/stop end points, presentation direction and write turning point.
The device of 14. prompting clerical errors according to claim 13, is characterized in that, described identification module, specifically for identifying the current font of writing, the order of strokes observed in calligraphy and format write standard according to handwriting trace; And judge whether the current font of writing, the order of strokes observed in calligraphy and format write standard mate with standard content corresponding in preset database; Or whether the result that judges current mathematical operation of writing meets mathematical operation rule corresponding in preset database;
Described font comprises the result of Chinese character, letter spelling combination or mathematical operation;
Described preset database comprises default local data base, or the network data base connecting by wireless network; Standard content in described database comprises font, the order of strokes observed in calligraphy, format write standard and mathematical operation rule, and described format write standard comprises: the occupy-place on the four line three lattice pages of letter, letter spelling, the capital and small letter standard of letter.
The device of 15. prompting clerical errors according to claim 10, is characterized in that, also comprises: voice module, if incorrect for writing of current written contents, export default voice message signal and carry out bomp.
The device of 16. prompting clerical errors according to claim 15, is characterized in that, described projection reminding module goes out the default mark of makeing mistakes specifically for white space projection around current written contents; And in the time makeing mistakes mark described in user clicks, around current written contents, white space projection goes out corresponding correct content, the projection form of described correct content comprises image or video;
Described voice module, also, in the time makeing mistakes mark described in user clicks, plays the explanation to correct content by audio frequency.
The device of 17. prompting clerical errors according to claim 15, it is characterized in that, described projection reminding module, if incorrect specifically for writing of current written contents, around current written contents, white space projection goes out corresponding correct content, and the projection form of described correct content comprises image or video.
The device of 18. prompting clerical errors according to claim 15, it is characterized in that, described projection reminding module, also for after current written contents is carried out to projection error correcting prompt, when user revises when correct current written contents, carry out sure prompting, around revised context, white space projection goes out default correct mark; And in the time that user revises mistake to current written contents, re-start projection error correcting prompt, go out the default mark of makeing mistakes with white space projection around revised context;
Described voice module, also, in the time that user revises mistake to current written contents, exports default voice message signal and carries out bomp.
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