CN110362217B - Touch interactive electronic blackboard eraser system and erasing method - Google Patents
Touch interactive electronic blackboard eraser system and erasing method Download PDFInfo
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- CN110362217B CN110362217B CN201910509665.8A CN201910509665A CN110362217B CN 110362217 B CN110362217 B CN 110362217B CN 201910509665 A CN201910509665 A CN 201910509665A CN 110362217 B CN110362217 B CN 110362217B
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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
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03545—Pens or stylus
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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
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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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]
- G06F3/0481—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
- G06F3/0482—Interaction with lists of selectable items, e.g. menus
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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
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B5/00—Electrically-operated educational appliances
- G09B5/02—Electrically-operated educational appliances with visual presentation of the material to be studied, e.g. using film strip
Abstract
The invention provides a touch interactive electronic blackboard eraser system and an erasing method. The invention solves the following problems: the existing method for using the touch interactive electronic blackboard eraser is also completely or partially followed by a method of drawing tools by computer software, so that the problem of complex erasing operation of the eraser is brought. The invention completely simulates the erasing mode of a common blackboard, realizes the purpose of erasing the blackboard immediately by taking the blackboard and writing the blackboard immediately by putting the blackboard and simplifies the using process of the blackboard eraser.
Description
The technical field is as follows:
the invention relates to the technical field of multimedia teaching equipment, and belongs to a touch interactive electronic blackboard eraser system and an erasing method.
Technical background:
with the rapid development and popularization of electronic display technology and computer technology, teaching boards used in classroom teaching also gradually evolve from traditional blackboards to touch interactive electronic blackboards. For example, we apply and obtain chinese patent, patent number: CN 201510345609.7 and 201611206764.1.
It is known to those who have used touch interactive electronic blackboard products that it brings much convenience and efficiency to us with the improvement of touch interactive electronic blackboard technology. However, the existing touch interactive electronic blackboard has some imperfections, specifically: the existing touch interactive electronic blackboard also completely or partially follows the erasing method with obvious software characteristics of a computer software drawing tool in terms of the using method (namely, selection, display, erasing and switching of a writing pen) of the eraser, and when erasing, the eraser on a 'toolbar' needs to be clicked to select the eraser; the size of the eraser needs to be preset; when switching between the eraser and the touch pen, the user also needs to click a "toolbar" -the "touch pen" to switch. The method has greatly improved use difficulty for users who are not familiar with software features, and has extremely poor user experience. To address this problem, a system and method that can completely simulate a normal blackboard eraser could not be developed? Many manufacturers are studying solutions, such as: many factories and merchants represented by the Fukuwa company in the touch interactive electronic blackboard industry improve the erasing method to a certain extent, and realize the functions of erasing the electronic blackboard by a palm and the like, but the methods have three problems, namely 1, the size of the electronic blackboard eraser needs to be set through a menu, and 2, the accurate erasing cannot be realized; 3. relying on multi-touch technology.
Aiming at the problems, through years of research, the invention provides a touch interactive electronic blackboard eraser system and an erasing method, which completely simulate the erasing mode of a common blackboard, achieve the convenience of erasing the blackboard immediately by taking and putting, and changing the size of the blackboard eraser randomly, and simplify the switching and setting processes of a touch pen and the blackboard eraser.
The invention content is as follows:
the invention aims to solve the problem that the existing touch interactive electronic blackboard adopts an erasing method with obvious software characteristics, wherein the erasing method completely or partially follows a computer software drawing tool, and the erasing method needs to click the eraser on a toolbar during erasing; the size of the eraser needs to be preset, and when the eraser is switched with a touch pen, the user needs to click a ' toolbar ' -the touch pen ' to switch, and the like.
In order to achieve the above object, the present invention provides a touch interactive electronic blackboard eraser system, comprising a touch interactive electronic blackboard hardware system and a software system; the hardware system comprises a computer host and touch display equipment; the software system comprises a touch interactive electronic blackboard system module, a blackboard module, a writing module, a comment module and other existing teaching auxiliary modules, and is characterized by further comprising an eraser box module, an eraser erasing module, a main control module, a touch pen state marking unit, an eraser size marking unit, a touch pen position coordinate marking unit and an eraser box position coordinate marking unit;
the blackboard eraser box module is used for displaying the blackboard eraser box on a blackboard screen or an annotation screen; the shape of the eraser box can be various geometric shapes such as rectangle, square, circle and the like;
the blackboard eraser module is used for displaying the blackboard eraser on the blackboard screen, the comment screen or the blackboard eraser box on the blackboard screen and the comment screen; the shape of the eraser can be various geometric shapes such as rectangle, square, circle and the like corresponding to the shape of the eraser box;
the blackboard eraser erasing module is used for erasing on a blackboard screen or an annotation screen; the erasing track is a track formed by clicking or moving on a blackboard screen or an annotation screen based on the shape of the eraser;
the touch pen state marking unit is used for storing the current state of the touch pen, and the current state is divided into a writing state and an eraser erasing state;
the eraser size marking unit is used for storing the size state of the eraser when the touch pen is in an eraser erasing state, and the size of the eraser can be in various states;
the touch pen position coordinate marking unit is used for storing instant touch coordinate information of the touch pen and updating in real time along with touch movement of the touch pen;
the blackboard eraser box position coordinate marking unit is used for storing instant position coordinate information of the blackboard eraser box and area coordinate information inside the blackboard eraser box, and the area coordinate information inside the blackboard eraser box is divided into three blocks, namely left area coordinate information, middle area coordinate information and right area coordinate information. The left part is the relative space between the left part edge of the blackboard eraser box and the left part edge of the blackboard eraser, the middle part is the blackboard eraser area, and the right part is the relative space between the right part edge of the blackboard eraser and the right part edge of the blackboard eraser box: when the position of the left area in the blackboard eraser box is clicked, the size of the blackboard eraser is small, when the position of the middle area in the blackboard eraser box is clicked, the size of the blackboard eraser is middle board eraser, namely normal blackboard eraser, and when the position of the right area in the blackboard eraser box is clicked, the size of the blackboard eraser is large;
the main control module starts to work after the touch interactive electronic blackboard enters a blackboard screen or an annotation screen, and has the functions of: monitoring the touch, touch movement and touch lifting events of the touch pen on the blackboard screen or the comment screen, recording the position coordinates of the touch pen when the events occur, judging the occurrence areas and the functions to be completed according to the position coordinate marking unit of the touch pen, the position coordinate marking unit of the eraser box, the state marking unit of the touch pen and the size marking unit of the eraser, and calling corresponding modules in the writing module, the comment module, the eraser box module, the eraser module and the eraser erasing module to complete corresponding writing and erasing functions.
The invention also provides an erasing method adopting the touch interactive electronic blackboard eraser system, which comprises the following steps:
step 2, judging whether the touch pen touches the blackboard screen or the annotation screen, if not, continuously and circularly executing the step 2, and if so, executing the following steps;
step 3, storing coordinate information of the touch point in a touch pen position coordinate marking unit, and judging whether the touch pen is in the eraser box according to the value of the touch pen position coordinate marking unit and the value of the eraser box position coordinate marking unit: if the touch pen is positioned in the eraser box, executing the step 4; if the touch pen is positioned outside the eraser box, executing the step 5;
step 4, judging the position of the touch pen in the eraser box: if the touch pen is located in the middle area in the eraser box, executing the step 4-1); if the touch pen is not located in the middle area in the eraser box, executing the step 4-2);
1) judging the current state of the touch pen:
a. if the touch pen is in an erasing state, judging whether the touch pen is lifted up or not, if not, returning to the step 4-1) -a to continuously judge whether the touch pen is lifted up or not; if the touch is lifted, the main control module calls the eraser module to enable the eraser to be presented in the eraser box, the touch pen state marking unit is changed into a writing state, and the step 2 is returned;
b. if the touch pen is in a writing state, judging whether the touch pen is lifted up by touching, if not, returning to the step 4-1) -b to continuously judge whether the touch pen is lifted up by touching; if the touch is raised, the main control module calls the eraser module to enable the eraser to disappear in the eraser box, the state marking unit of the touch pen is changed into an eraser erasing state, the size marking unit of the eraser is marked into a middle board erasing state, the normal eraser, namely the middle board eraser, is taken up, and the step 2 is returned;
2) judging whether the touch pen is positioned in the left area in the eraser box: if the touch pen is not in the left area in the eraser box, executing the step 4-3); if the touch pen is positioned in the left area in the eraser box, the following steps are executed:
judging the current state of the touch pen:
a. if the touch pen is in a writing state, judging whether the touch pen is lifted up by touching: if the touch is lifted, the main control module calls the eraser module to enable the eraser to disappear in the eraser box, the small eraser is taken up, the touch pen state marking unit is changed into an eraser erasing state, and the eraser size marking unit is marked into a small eraser state; returning to the step 2; if the touch is not lifted, executing the steps 4-2) -c;
b. if the touch pen is in the erasing state, judging whether the touch pen is lifted up by touching: if the touch is lifted, the main control module calls the eraser module to display the eraser in the eraser box, changes the touch pen state marking unit to be in a writing state, and returns to the step
2; if the touch is not lifted, executing the following steps:
c. judging whether the touch pen moves:
i, if the touch pen does not move: if the step is the step 4-2) -a, returning to the step 4-2) -a; if the step is the step 4-2) -b, returning to the step 4-2) -b;
II, if the touch pen moves, the main control module calls the eraser box module to enable the eraser box to move to a corresponding position along with the movement of the touch pen;
judging whether the touch pen is lifted up by touching:
if the touch is lifted, returning to the step 2;
if the touch is not lifted, judging whether the touch pen moves: if the touch pen does not move, returning to the step for judging whether the touch pen is lifted up; if the touch pen moves, returning to the step 4-2) -c-II to continuously call the eraser box module to enable the eraser box to move to a corresponding position along with the movement of the touch pen;
3) the touch pen is arranged in the right area of the blackboard eraser box:
judging the current state of the touch pen:
a. if the touch pen is in a writing state, judging whether the touch pen is lifted up by touching: if the touch is lifted, the main control module calls the eraser module to enable the eraser to disappear in the eraser box, the large eraser is taken up, the touch pen state marking unit is changed into an eraser erasing state, and the eraser size marking unit is marked into a large eraser state; returning to the step 2; if the touch is not lifted, executing the steps 4-3) -c;
b. if the touch pen is in the erasing state, judging whether the touch pen is lifted up by touching: if the touch is lifted, the main control module calls the eraser module to display the eraser in the eraser box, changes the touch pen state marking unit into a writing state and returns to the step 2; if the touch is not lifted, executing the following steps:
c. judging whether the touch pen moves:
i, if the touch pen does not move: if the step is the step 4-3) -a, returning to the step 4-3) -a; if the step is the step 4-3) -b, returning to the step 4-3) -b;
II, if the touch pen moves, the main control module calls the eraser box module to enable the eraser box to move to a corresponding position along with the movement of the touch pen;
judging whether the touch pen is lifted up by touching:
if the touch is lifted, returning to the step 2;
if the touch is not lifted, judging whether the touch pen moves: if the touch pen does not move, returning to the step for judging whether the touch pen is lifted up; if the touch pen moves, returning to the step 4-3) -c-II to continuously call the eraser box module to enable the eraser box to move to a corresponding position along with the movement of the touch pen;
step 5, judging whether a button for exiting the blackboard screen or the comment screen is touched:
1) if the button of exiting the blackboard screen or the button of exiting the annotation screen is not touched, judging the current state of the touch pen:
a. if the touch pen is in a writing state, judging whether the touch pen moves:
if the touch pen moves, the main control module calls the writing module or the annotating module to display the writing pen on the blackboard screen or the annotating screen to write or annotate, and then the step 5-1) -a is returned to continuously judge whether the touch pen moves;
if the touch pen does not move, judging whether the touch pen is lifted up by touch: if the touch is lifted, returning to the step 2; if the touch is not lifted, the writing pen is displayed on the blackboard screen or the annotation screen along with the touch pen, and the step 5-1) -a is returned to continuously judge whether the writing pen moves;
b. if the touch pen is in an eraser state at present, the main control module calls the eraser module to display the eraser on a blackboard screen or an annotation screen, and then whether the touch pen moves is judged:
if the touch pen moves, the main control module calls the eraser module and the erasing module to erase and simultaneously present the eraser, and then the step 5-1) -b is returned to continuously judge whether the touch pen moves;
if the touch pen does not move, judging whether the touch pen is lifted up by touch: if the touch is lifted, the main control module calls the eraser module to enable the eraser to disappear, and the step 2 is returned; if the touch is not lifted, returning to the step 5-1) -b to continuously judge whether the touch pen moves;
2) and if the touch pen touches the button for exiting the blackboard screen or the annotation screen, the button for exiting the blackboard screen or the annotation screen is exited, and the main control module exits.
Compared with the prior art, the invention has the beneficial effects that:
the invention discloses a touch interactive electronic blackboard eraser system and an erasing method, which are a method for simulating a common blackboard eraser based on an electronic teaching auxiliary system. The blackboard eraser is arranged on a blackboard screen or an annotation screen, so that the effects of erasing when taking the blackboard eraser and writing when putting the blackboard eraser are achieved. The touch interactive electronic blackboard eraser overcomes the defect that the existing touch interactive electronic blackboard eraser has software characteristics for selection, setting, display and switching, improves the experience degree of a user to the maximum extent, and has great practical significance for the popularization of the electronic blackboard.
Description of the drawings:
FIG. 1 flow chart of the Master control Module
FIG. 2 is a schematic view of a eraser box
FIG. 3 is a schematic diagram of a writing state
FIG. 4 is a schematic view of a normal erasing status
FIG. 5 is a schematic diagram of a small rubbing state
FIG. 6 is a schematic view of a large blackboard eraser
The specific implementation mode is as follows:
the following describes the touch interactive electronic blackboard eraser system and the erasing method provided by the invention in further detail with reference to the accompanying drawings.
An interactive electronic blackboard eraser system uses touch display equipment as a display, electronic teaching auxiliary software as a carrying platform and uses interactive electronic blackboard erasers with various touch positioning principles and various system structures. The interactive touch electronic blackboard specifically comprises a touch interactive electronic blackboard hardware system and a software system; the hardware system comprises a computer host and touch display equipment; the software system comprises a touch interactive electronic blackboard system module, a blackboard module, a writing module, an annotation module, other existing teaching auxiliary modules (such as images in Word, PPT and PDF documents and various image formats, images shot by a camera and the like), and is characterized by further comprising an eraser box module, an eraser erasing module, a main control module, a touch pen state marking unit, an eraser size marking unit, a touch pen position coordinate marking unit and an eraser box position coordinate marking unit;
the blackboard eraser box module is used for displaying the blackboard eraser box on a blackboard screen or an annotation screen; the shape of the eraser box can be various geometric shapes such as rectangle, square, circle and the like; the touch interactive electronic blackboard is called by the main control module after entering a blackboard screen or an annotation screen;
the blackboard eraser module is used for displaying the blackboard eraser on the blackboard screen, the comment screen or the blackboard eraser box on the blackboard screen and the comment screen; the shape of the eraser can be various geometric shapes such as rectangle, square, circle and the like corresponding to the shape of the eraser box; taking the central coordinate of the eraser as the coordinate information of the position of the eraser, and setting the initial position of the default eraser as the central coordinate position relative to the eraser box; in this specification, the shape of the eraser box and the eraser is described by taking a rectangle as an example. (see FIG. 2);
the blackboard eraser erasing module is used for erasing on a blackboard screen or an annotation screen; the erasing track is a track formed by clicking or moving on a blackboard screen or an annotation screen based on the shape of the eraser;
the touch pen state marking unit is used for storing the current state of the touch pen, and the current state is divided into a writing state and an eraser erasing state; the default initial state of the touch pen is a writing state (as shown in FIG. 3);
the eraser size marking unit is used for storing the size state of the eraser when the touch pen is in the eraser erasing state, the eraser size can be in various states, and the eraser size in the description is described in a medium eraser, namely a normal eraser state (as shown in fig. 4), a small eraser state (as shown in fig. 5) and a large eraser state (as shown in fig. 6);
the touch pen position coordinate marking unit is used for storing instant touch coordinate information of the touch pen and updating the instant touch coordinate information in real time along with touch movement of the touch pen, and the initial default value is a (0,0) point;
the blackboard eraser box position coordinate marking unit is used for storing instant position coordinate information of the blackboard eraser box and area coordinate information inside the blackboard eraser box, the coordinate of the upper left corner of the blackboard eraser box is used as the position coordinate information of the blackboard eraser box, the size of the blackboard eraser box is a fixed constant, and the area coordinate information inside the blackboard eraser box is divided into three blocks, namely left area coordinate information, middle area coordinate information and right area coordinate information. The left part is the relative space between the left part edge of the blackboard eraser box and the left part edge of the blackboard eraser, the middle part is the blackboard eraser area, and the right part is the relative space between the right part edge of the blackboard eraser and the right part edge of the blackboard eraser box: when the position of the left area in the blackboard eraser box is clicked, the size of the blackboard eraser is small, when the position of the middle area in the blackboard eraser box is clicked, the size of the blackboard eraser is middle board eraser, namely normal blackboard eraser, and when the position of the right area in the blackboard eraser box is clicked, the size of the blackboard eraser is large;
the main control module starts to work after the touch interactive electronic blackboard enters a blackboard screen or an annotation screen, and has the functions of: monitoring the touch, touch movement and touch lifting events of the touch pen on the blackboard screen or the comment screen, recording the position coordinates of the touch pen when the events occur, judging the occurrence areas and the functions to be completed according to the position coordinate marking unit of the touch pen, the position coordinate marking unit of the eraser box, the state marking unit of the touch pen and the size marking unit of the eraser, and calling corresponding modules in the writing module, the comment module, the eraser box module, the eraser module and the eraser erasing module to complete corresponding writing and erasing functions.
An erasing method adopting the touch interactive electronic blackboard eraser system comprises the following steps:
step 2, judging whether the touch pen touches the blackboard screen or the annotation screen, if not, continuously and circularly executing the step 2, and if so, executing the following steps;
step 3, storing coordinate information of the touch point in a touch pen position coordinate marking unit, and judging whether the touch pen is in the eraser box according to the value of the touch pen position coordinate marking unit and the value of the eraser box position coordinate marking unit: if the touch pen is positioned in the eraser box, executing the step 4; if the touch pen is positioned outside the eraser box, executing the step 5;
step 4, judging the position of the touch pen in the eraser box: if the touch pen is located in the middle area in the eraser box, executing the step 4-1); if the touch pen is not located in the middle area in the eraser box, executing the step 4-2);
1) judging the current state of the touch pen:
a. if the touch pen is in an erasing state, judging whether the touch pen is lifted up or not, if not, returning to the step 4-1) -a to continuously judge whether the touch pen is lifted up or not; if the touch is lifted, the main control module calls the eraser module to enable the eraser to be presented in the eraser box, the touch pen state marking unit is changed into a writing state, and the step 2 is returned;
b. if the touch pen is in a writing state, judging whether the touch pen is lifted up by touching, if not, returning to the step 4-1) -b to continuously judge whether the touch pen is lifted up by touching; if the touch is raised, the main control module calls the eraser module to enable the eraser to disappear in the eraser box, the state marking unit of the touch pen is changed into an eraser erasing state, the size marking unit of the eraser is marked into a middle board erasing state, the normal eraser, namely the middle board eraser, is taken up, and the step 2 is returned;
2) judging whether the touch pen is positioned in the left area in the eraser box: if the touch pen is not in the left area in the eraser box, executing the step 4-3); if the touch pen is positioned in the left area in the eraser box, the following steps are executed:
judging the current state of the touch pen:
a. if the touch pen is in a writing state, judging whether the touch pen is lifted up by touching: if the touch is lifted, the main control module calls the eraser module to enable the eraser to disappear in the eraser box, the small eraser is taken up, the touch pen state marking unit is changed into an eraser erasing state, and the eraser size marking unit is marked into a small eraser state; returning to the step 2; if the touch is not lifted, executing the steps 4-2) -c;
b. if the touch pen is in the erasing state, judging whether the touch pen is lifted up by touching: if the touch is lifted, the main control module calls the eraser module to display the eraser in the eraser box, changes the touch pen state marking unit to be in a writing state, and returns to the step
2; if the touch is not lifted, executing the following steps:
c. judging whether the touch pen moves:
i, if the touch pen does not move: if the step is the step 4-2) -a, returning to the step 4-2) -a; if the step is the step 4-2) -b, returning to the step 4-2) -b;
II, if the touch pen moves, the main control module calls the eraser box module to enable the eraser box to move to a corresponding position along with the movement of the touch pen;
judging whether the touch pen is lifted up by touching:
if the touch is lifted, returning to the step 2;
if the touch is not lifted, judging whether the touch pen moves: if the touch pen does not move, returning to the step for judging whether the touch pen is lifted up; if the touch pen moves, returning to the step 4-2) -c-II to continuously call the eraser box module to enable the eraser box to move to a corresponding position along with the movement of the touch pen;
3) the touch pen is arranged in the right area of the blackboard eraser box:
judging the current state of the touch pen:
a. if the touch pen is in a writing state, judging whether the touch pen is lifted up by touching: if the touch is lifted, the main control module calls the eraser module to enable the eraser to disappear in the eraser box, the large eraser is taken up, the touch pen state marking unit is changed into an eraser erasing state, and the eraser size marking unit is marked into a large eraser state; returning to the step 2; if the touch is not lifted, executing the steps 4-3) -c;
b. if the touch pen is in the erasing state, judging whether the touch pen is lifted up by touching: if the touch is lifted, the main control module calls the eraser module to display the eraser in the eraser box, changes the touch pen state marking unit into a writing state and returns to the step 2; if the touch is not lifted, executing the following steps:
c. judging whether the touch pen moves:
i, if the touch pen does not move: if the step is the step 4-3) -a, returning to the step 4-3) -a; if the step is the step 4-3) -b, returning to the step 4-3) -b;
II, if the touch pen moves, the main control module calls the eraser box module to enable the eraser box to move to a corresponding position along with the movement of the touch pen;
judging whether the touch pen is lifted up by touching:
if the touch is lifted, returning to the step 2;
if the touch is not lifted, judging whether the touch pen moves: if the touch pen does not move, returning to the step for judging whether the touch pen is lifted up; if the touch pen moves, returning to the step 4-3) -c-II to continuously call the eraser box module to enable the eraser box to move to a corresponding position along with the movement of the touch pen;
step 5, judging whether a button for exiting the blackboard screen or the comment screen is touched:
1) if the button of exiting the blackboard screen or the button of exiting the annotation screen is not touched, judging the current state of the touch pen:
a. if the touch pen is in a writing state, judging whether the touch pen moves:
if the touch pen moves, the main control module calls the writing module or the annotating module to display the writing pen on the blackboard screen or the annotating screen to write or annotate, and then the step 5-1) -a is returned to continuously judge whether the touch pen moves;
if the touch pen does not move, judging whether the touch pen is lifted up by touch: if the touch is lifted, returning to the step 2; if the touch is not lifted, the writing pen is displayed on the blackboard screen or the annotation screen along with the touch pen, and the step 5-1) -a is returned to continuously judge whether the writing pen moves;
b. if the touch pen is in an eraser state at present, the main control module calls the eraser module to display the eraser on a blackboard screen or an annotation screen, and then whether the touch pen moves is judged:
if the touch pen moves, the main control module calls the eraser module and the erasing module to erase and simultaneously present the eraser, and then the step 5-1) -b is returned to continuously judge whether the touch pen moves;
if the touch pen does not move, judging whether the touch pen is lifted up by touch: if the touch is lifted, the main control module calls the eraser module to enable the eraser to disappear, and the step 2 is returned; if the touch is not lifted, returning to the step 5-1) -b to continuously judge whether the touch pen moves;
2) and if the touch pen touches the button for exiting the blackboard screen or the annotation screen, the button for exiting the blackboard screen or the annotation screen is exited, and the main control module exits.
Claims (2)
1. A touch interactive electronic blackboard eraser system comprises a touch interactive electronic blackboard hardware system and a software system; the hardware system comprises a computer host and touch display equipment; the software system comprises a touch interactive electronic blackboard system module, a blackboard module, a writing module and an annotation module, and is characterized by also comprising an eraser box module, an eraser erasing module, a main control module, a touch pen state marking unit, an eraser size marking unit, a touch pen position coordinate marking unit and an eraser box position coordinate marking unit;
the blackboard eraser box module is used for displaying the blackboard eraser box on a blackboard screen or an annotation screen;
the blackboard eraser module is used for displaying the blackboard eraser on the blackboard screen, the comment screen or the blackboard eraser box on the blackboard screen and the comment screen;
the blackboard eraser erasing module is used for erasing on a blackboard screen or an annotation screen;
the touch pen state marking unit is used for storing the current state of the touch pen, and the current state is divided into a writing state and an eraser erasing state;
the eraser size marking unit is used for storing the size state of the eraser when the touch pen is in an eraser erasing state;
the touch pen position coordinate marking unit is used for storing instant touch coordinate information of the touch pen and updating in real time along with touch movement of the touch pen;
the blackboard eraser box position coordinate marking unit is used for storing instant position coordinate information of the blackboard eraser box and area coordinate information inside the blackboard eraser box, and the area coordinate information inside the blackboard eraser box is divided into three parts, namely left area coordinate information, middle area coordinate information and right area coordinate information: when the position of the left area in the blackboard eraser box is clicked, the blackboard eraser is a small blackboard eraser, when the position of the middle area in the blackboard eraser box is clicked, the blackboard eraser is a middle board eraser, namely a normal blackboard eraser, and when the position of the right area in the blackboard eraser box is clicked, the blackboard eraser is a large blackboard eraser;
the main control module starts to work after the touch interactive electronic blackboard enters a blackboard screen or an annotation screen, and has the functions of: monitoring the touch, touch movement and touch lifting events of the touch pen on the blackboard screen or the comment screen, recording the position coordinates of the touch pen when the events occur, judging the occurrence areas and the functions to be completed according to the position coordinate marking unit of the touch pen, the position coordinate marking unit of the eraser box, the state marking unit of the touch pen and the size marking unit of the eraser, and calling corresponding modules in the writing module, the comment module, the eraser box module, the eraser module and the eraser erasing module to complete corresponding writing and erasing functions.
2. An erasing method using the touch interactive electronic blackboard eraser system of claim 1, comprising the steps of:
step 1, operating a touch interactive electronic blackboard system module to enter a blackboard screen or a comment screen, and starting a main control module; firstly, default values are set for a touch pen position coordinate marking unit, an eraser box position coordinate marking unit, a touch pen state marking unit and an eraser size marking unit;
step 2, judging whether the touch pen touches the blackboard screen or the annotation screen, if not, continuously and circularly executing the step 2, and if so, executing the following steps;
step 3, storing coordinate information of the touch point in a touch pen position coordinate marking unit, and judging whether the touch pen is in the eraser box according to the value of the touch pen position coordinate marking unit and the value of the eraser box position coordinate marking unit: if the touch pen is positioned in the eraser box, executing the step 4; if the touch pen is positioned outside the eraser box, executing the step 5;
step 4, judging the position of the touch pen in the eraser box: if the touch pen is located in the middle area in the eraser box, executing the step 4-1); if the touch pen is not located in the middle area in the eraser box, executing the step 4-2);
1) judging the current state of the touch pen:
a. if the touch pen is in an erasing state, judging whether the touch pen is lifted up or not, if the touch pen is not lifted up, returning to the step 4-1) -a to continuously judge whether the touch pen is lifted up or not, if the touch pen is lifted up, calling the eraser module by the main control module to enable the eraser to be presented in the eraser box, changing the state marking unit of the touch pen into a writing state, and returning to the step 2;
b. if the touch pen is in a writing state, judging whether the touch pen is lifted up or not, if the touch pen is not lifted up, returning to the step 4-1) -b to continuously judge whether the touch pen is lifted up or not, if the touch pen is lifted up, calling an eraser module by a main control module to enable an eraser to disappear in an eraser box, changing a state marking unit of the touch pen into an eraser erasing state, marking the size marking unit of the eraser into a middle eraser state, picking up a normal eraser, namely the middle eraser, and returning to the step 2;
2) judging whether the touch pen is positioned in the left area in the eraser box: if the touch pen is not in the left area in the eraser box, executing the step 4-3); if the touch pen is positioned in the left area in the eraser box, the following steps are executed:
judging the current state of the touch pen:
a. if the touch pen is in a writing state, judging whether the touch pen is lifted up by touching: if the touch is lifted, the main control module calls the eraser module to enable the eraser to disappear in the eraser box, the small eraser is taken up, the touch pen state marking unit is changed into an eraser erasing state, and the eraser size marking unit is marked into a small eraser state; returning to the step 2; if the touch is not lifted, executing the steps 4-2) -c;
b. if the touch pen is in the erasing state, judging whether the touch pen is lifted up by touching: if the touch is lifted, the main control module calls the eraser module to display the eraser in the eraser box, changes the touch pen state marking unit into a writing state and returns to the step 2; if the touch is not lifted, executing the following steps:
c. judging whether the touch pen moves:
if the touch pen does not move: if the step is the step 4-2) -a, returning to the step 4-2) -a; if the step is the step 4-2) -b, returning to the step 4-2) -b;
if the touch pen moves, the main control module calls the eraser box module to enable the eraser box to move to a corresponding position along with the movement of the touch pen;
judging whether the touch pen is lifted up by touching:
if the touch is lifted, returning to the step 2;
if the touch is not lifted, judging whether the touch pen moves: if the touch pen does not move, returning to the step for judging whether the touch pen is lifted up; if the touch pen moves, returning to the second section of the steps 4-2) -c to continue to call the eraser box module to enable the eraser box to move to a corresponding position along with the movement of the touch pen;
3) the touch pen is arranged in the right area of the blackboard eraser box:
judging the current state of the touch pen:
a. if the touch pen is in a writing state, judging whether the touch pen is lifted up by touching: if the touch is lifted, the main control module calls the eraser module to enable the eraser to disappear in the eraser box, the large eraser is taken up, the touch pen state marking unit is changed into an eraser erasing state, and the eraser size marking unit is marked into a large eraser state; returning to the step 2; if the touch is not lifted, executing the steps 4-3) -c;
b. if the touch pen is in the erasing state, judging whether the touch pen is lifted up by touching: if the touch is lifted, the main control module calls the eraser module to display the eraser in the eraser box, changes the touch pen state marking unit into a writing state and returns to the step 2; if the touch is not lifted, executing the following steps:
c. judging whether the touch pen moves:
if the touch pen does not move: if the step is the step 4-3) -a, returning to the step 4-3) -a; if the step is the step 4-3) -b, returning to the step 4-3) -b;
if the touch pen moves, the main control module calls the eraser box module to enable the eraser box to move to a corresponding position along with the movement of the touch pen;
judging whether the touch pen is lifted up by touching:
if the touch is lifted, returning to the step 2;
if the touch is not lifted, judging whether the touch pen moves: if the touch pen does not move, returning to the step for judging whether the touch pen is lifted up; if the touch pen moves, returning to the second section of the steps 4-3) -c to continue to call the eraser box module to enable the eraser box to move to a corresponding position along with the movement of the touch pen;
step 5, judging whether a button for exiting the blackboard screen or the comment screen is touched:
1) if the button of exiting the blackboard screen or the button of exiting the annotation screen is not touched, judging the current state of the touch pen:
a. if the touch pen is in a writing state, judging whether the touch pen moves:
if the touch pen moves, the main control module calls the writing module or the annotating module to display the writing pen on the blackboard screen or the annotating screen to write or annotate, and then the step 5-1) -a is returned to continuously judge whether the touch pen moves;
if the touch pen does not move, judging whether the touch pen is lifted up by touch: if the touch is lifted, returning to the step 2; if the touch is not lifted, the writing pen is displayed on the blackboard screen or the annotation screen along with the touch pen, and the step 5-1) -a is returned to continuously judge whether the writing pen moves;
b. if the touch pen is in an eraser state at present, the main control module calls the eraser module to display the eraser on a blackboard screen or an annotation screen, and then whether the touch pen moves is judged:
if the touch pen moves, the main control module calls the eraser module and the erasing module to erase and simultaneously present the eraser, and then the step 5-1) -b is returned to continuously judge whether the touch pen moves;
if the touch pen does not move, judging whether the touch pen is lifted up by touch: if the touch is lifted, the main control module calls the eraser module to enable the eraser to disappear, and the step 2 is returned, if the touch is not lifted, the steps 5-1) -b are returned to continuously judge whether the touch pen moves;
2) and if the touch pen touches the button for exiting the blackboard screen or the annotation screen, the button for exiting the blackboard screen or the annotation screen is exited, and the main control module exits.
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| CN110879686B (en) * | 2019-11-13 | 2021-05-18 | 讯飞幻境(北京)科技有限公司 | Label erasing method and device and electronic equipment |
| CN114063803A (en) * | 2020-07-31 | 2022-02-18 | 深圳市创易联合科技有限公司 | Content display method, electronic teaching device and computer readable storage medium |
| CN113434106B (en) * | 2021-08-30 | 2021-11-23 | 广州市保伦电子有限公司 | Online electronic whiteboard content synchronous sharing system |
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