JP6418016B2 - Handwriting collection system, handwriting collection method, program - Google Patents

Description

  The present invention relates to a handwriting collection system that collects handwriting data generated by an electronic pen.

  Currently, the introduction of a system using an electronic pen is in progress in educational settings. For example, Patent Document 1 discloses a mechanism in which a teacher can grasp the progress of student answers in a system using an electronic pen. By using the mechanism of Patent Document 1, the teacher can refer to the handwriting data of the students collected on the teacher's terminal, find the students that need guidance, and add explanations at appropriate times. Can proceed.

JP 2013-47981 A

  By the way, among the handwriting data collected in the teacher terminal, only handwriting data of a specific student is often displayed with a delay. The cause of this delay can be broadly classified as follows: the first is a student's trip and the second is a system problem such as radio interference.

  On the other hand, there is a demand from teachers to recognize delays caused by system problems separately from delays caused by student trips. This is because it is necessary to recognize that guidance is necessary if the delay is caused by a student's trip, and that it is necessary to improve systematically if the delay is caused by a system problem.

  The present invention has been made in view of the above-described problems, and its purpose is to provide a handwriting aggregation system that can identify handwritten data that is delayed due to a system problem. is there.

  According to a first aspect of the present invention for achieving the above object, a plurality of electronic pens and an aggregation device are connected, the aggregation device aggregates handwriting data generated by the electronic pen, and the handwriting data is displayed on the display means. A handwriting aggregation system for displaying, wherein the electronic pen includes transmission means for transmitting the handwriting data and a generation time of the handwriting data, and the aggregation device receives the handwriting data and the generation time. And a handwriting aggregation system, comprising: a receiving means for displaying and a display control means for changing a display mode of information relating to the handwriting data when a difference between a reception time of the handwriting data and the generation time is equal to or greater than a threshold value. It is. According to the first invention, a teacher browsing the aggregation device can identify handwriting data that is delayed due to a system problem.

  For example, the display control means in the first invention uses the handwriting data in which the difference between the reception time and the generation time is a threshold value or more as delayed handwriting data, and emphasizes and displays information related to the delayed handwriting data. As a result, the teacher can grasp the handwriting data delayed due to a system problem such as wireless interference.

  For example, the recording display control means in the first invention uses the handwriting data in which the difference between the reception time and the generation time is a threshold value or more as delayed handwriting data, and the handwriting data different from the delayed handwriting data as normal handwriting data. The display mode of information related to the normal handwriting data is changed. Further, for example, the display control means in the first invention displays a difference between the reception time and the generation time related to the delayed handwriting data as a delay time, and delays information related to the normal handwriting data by the delay time. Let In addition, for example, the display control means in the first invention displays the information related to the normal handwriting data with a reduced display speed. This prevents teachers from misunderstanding that they are delayed due to a student's trip, despite being delayed due to system problems such as radio interference.

  For example, the handwriting aggregation system according to the first invention further includes a relay device that receives the handwriting data and the generation time from the electronic pen, and transmits the handwriting data to the aggregation device together with a relay reception time of the handwriting data, The display control means further determines whether or not the difference between the relay reception time and the generation time is greater than or equal to a threshold, or whether or not the difference between the reception time and the relay reception time is greater than or equal to a threshold. The display mode of information related to the handwriting data is changed based on the determination result. Thus, even when the student terminal relays handwriting data, it is possible to identify handwriting data that is delayed due to a system problem.

  According to a second aspect of the present invention, a plurality of electronic pens and an aggregation device including display means are connected, the aggregation device aggregates handwriting data generated by the electronic pen, and causes the display means to display the handwriting data. A handwriting aggregation method, wherein the electronic pen transmits the handwriting data and a generation time of the handwriting data to the aggregation device, and the aggregation device receives the handwriting data and the generation time. Receiving step, and when the difference between the reception time of the handwriting data and the generation time is equal to or greater than a threshold value, the aggregation device includes a display control step of changing a display mode of information regarding the handwriting data. This is the handwriting aggregation method. According to the second invention, handwriting data delayed due to a system problem can be identified.

  A third invention is a program for causing a computer to function as an aggregation device that is connected to a plurality of electronic pens, aggregates handwriting data generated by the electronic pens, and displays the handwriting data on a display unit. , Receiving means for receiving the handwriting data and the generation time of the handwriting data from the electronic pen, and if the difference between the reception time of the handwriting data and the generation time is equal to or greater than a threshold, information on the handwriting data It is a program for functioning as display control means for changing the display mode. By installing the program of the third invention in a general-purpose computer, the aggregation device in the first invention can be obtained.

  According to the present invention, it is possible to provide a handwriting aggregation system that can identify handwriting data delayed due to a system problem.

The figure which shows the outline of the handwriting collection system 1 The figure which shows the relationship between the dot of the dot pattern and the value which the dot is converted (A) schematically shows a dot pattern, and (b) is a diagram showing an example of information corresponding thereto. Hardware configuration diagram of aggregation device 2 Schematic showing the structure of the electronic pen 3 The flowchart which shows the flow of the handwriting collection process in 1st Embodiment. The flowchart which shows the flow of the display control processing in 1st Embodiment. The figure which shows the display screen 201 The figure which shows the display screen 301 The figure which shows the display screen 501 The figure which shows the outline of the handwriting collection system 1a The flowchart which shows the flow of the handwriting collection process in 2nd Embodiment. The flowchart which shows the flow of the display control processing in 2nd Embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The present invention is suitable when each student uses an electronic pen or a relay device, which will be described later, and a teacher uses an aggregation device, which will be described later, as a teacher terminal in an educational setting, but is not limited thereto. Absent. If the present invention is applied to a case having the same problems as those described above, the same effects can be obtained.

<First Embodiment>
First, the first embodiment will be described with reference to FIGS.

  FIG. 1 is a diagram showing an outline of a handwriting collection system 1. As shown in FIG. 1, the handwriting aggregation system 1 includes an electronic pen 3 that generates handwriting data, a paper 4 dedicated to the electronic pen 3, and an aggregation device 2 that collects handwriting data generated by the electronic pen 3. Prepare.

  On the paper 4, dot patterns (coded patterns) having different coordinate ranges are printed. The dot pattern is printed with ink containing carbon that absorbs infrared rays so that it can be read by the electronic pen 3, and other characters and drawings are printed with ink that does not absorb infrared rays. The handwriting data is stored by the aggregation device 2. The handwriting data and the image showing the paper 4 are displayed on the display means provided in the aggregation device 2.

  FIG. 2 is a diagram illustrating a relationship between dots of a dot pattern and values to which the dots are converted. FIG. 2 shows an Anoto dot pattern (coding pattern). As shown in FIG. 2, each dot of the dot pattern is associated with a predetermined value depending on its position. That is, each dot is associated with a value of 0 to 3 depending on which direction the top, bottom, left, or right is shifted from the reference position of the virtual grid (the intersection of the vertical and horizontal lines). The value of each dot can be further converted into a first bit value for the X coordinate and a second bit value for the Y coordinate. The position coordinates on the paper 4 are determined by the combination of the information thus associated.

  FIG. 3A is a diagram schematically illustrating a dot pattern, and FIG. 3B is a diagram illustrating an example of information corresponding to the dot pattern. As shown in FIG. 3 (a), 6 × 6 dots are arranged in a range of about 2 cm in length and width so that a unique pattern is obtained no matter which part of the paper 4 is taken 6 × 6 dots. . The dot pattern formed by these 36 dots holds the position coordinate information in the paper 4. FIG. 3B is a diagram in which values are converted based on the regularity shown in FIG. This conversion is performed by the electronic pen 3 that captures a dot pattern image.

  FIG. 4 is a hardware configuration diagram of the aggregation device 2. Note that the hardware configuration of FIG. 4 is an example. The aggregation device 2 can take various configurations depending on the application and purpose, and may be any of a desktop PC (Personal Computer), a notebook PC, a tablet PC, a smartphone, and the like.

  As shown in FIG. 5, the aggregation device 2 includes a control unit 21, a storage unit 22, a media input / output unit 23, a communication control unit 24, an input unit 25, a display unit 26, a peripheral device I / F unit 27, and the like. 28 is connected.

  The control unit 21 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. The CPU calls a program stored in the storage unit 22, ROM, recording medium, or the like to a work memory area on the RAM and executes it, and drives and controls each device connected via the bus 28, and is performed by the aggregation device 2. The processing described later is realized. The ROM is a non-volatile memory and permanently holds a computer boot program, a program such as BIOS, data, and the like. The RAM is a volatile memory, and temporarily stores a program, data, and the like loaded from the storage unit 22, ROM, recording medium, and the like, and includes a work area used by the control unit 21 for performing various processes.

  The storage unit 22 is an HDD (Hard Disk Drive) or the like, and stores a program executed by the control unit 21, data necessary for program execution, an OS (Operating System), and the like. As for the program, a control program corresponding to the OS and an application program for causing a computer to execute processing to be described later are stored. Each of these program codes is read by the control unit 21 as necessary, transferred to the RAM, read by the CPU, and executed as various means.

  The media input / output unit 23 (drive device) inputs / outputs data, for example, media such as a CD drive (-ROM, -R, -RW, etc.), DVD drive (-ROM, -R, -RW, etc.) Has input / output devices. The communication control unit 24 includes a communication control device, a communication port, and the like, and is a communication interface that mediates communication between the computer and the network, and performs communication control between other computers via the network. The network may be wired or wireless.

  The input unit 25 inputs data and includes, for example, a keyboard, a pointing device such as a mouse, and an input device such as a numeric keypad. An operation instruction, an operation instruction, data input, and the like can be performed on the computer via the input unit 25. The display unit 26 includes a display device such as a liquid crystal panel, and a logic circuit or the like (video adapter or the like) for realizing a video function of the computer in cooperation with the display device. The input unit 25 and the display unit 26 may be integrated like a touch panel display.

  The peripheral device I / F (Interface) unit 27 is a port or an antenna for transmitting and receiving data between the computer and the peripheral device. The computer transmits and receives data to and from the peripheral device via the peripheral device I / F unit 27. I do. The connection form with the peripheral device may be wired (for example, USB (Universal Serial Bus) or the like) or wireless (for example, Bluetooth (registered trademark) or the like). The bus 28 is a path that mediates transmission / reception of control signals, data signals, and the like between the devices.

  FIG. 5 is a schematic view showing the structure of the electronic pen 3. As shown in FIG. 5, the electronic pen 3 includes a processor 108 including an ink cartridge 104, an LED 105, a CMOS camera 106, a pressure sensor 107, a CPU (Central Processing Unit), a ROM, A memory 109 such as a RAM, a real-time clock 110, a communication unit 111 including an antenna and the like, and a battery 112 are provided. The tip of the ink cartridge 104 is a pen tip portion 103, and the user touches the pen tip portion 103 of the electronic pen 3 against the paper 4 and enters handwriting (handwritten handwriting). Here, the first contact of the pen tip 103 of the electronic pen 3 with the paper 4 or the like is referred to as “pen down”, and the removal of the pen tip 103 from the contacted (contacted) state is referred to as “pen”. Call it "up." A trajectory written between the pen-down and pen-up of the electronic pen 3 is one handwriting, and characters, figures, etc. are composed of one or a plurality of handwriting.

  The battery 112 is for supplying electric power to each component in the electronic pen 3. For example, the power of the electronic pen 3 itself is turned on / off by detaching a cap (not shown) of the electronic pen 3. It may be configured. The real time clock 110 transmits time information indicating the entry time (time stamp) and supplies the time information to the processor 108. The pressure sensor 107 detects the pressure applied through the ink cartridge 104 from the pen tip portion 103 when the user writes characters or marks on the paper 4 or the like with the electronic pen 3, that is, the writing pressure, and transmits the value to the processor 108. .

  The processor 108 switches on / off the switches of the LED 105 and the CMOS camera 106 based on the writing pressure data supplied from the pressure sensor 107. That is, when the user writes characters on the paper 4 or the like with the electronic pen 3, the pen pressure is applied to the pen tip portion 103, and when the pressure sensor 107 detects a writing pressure exceeding a predetermined value, the processor 108 Is started, the LED 105 and the CMOS camera 106 are operated. Then, the communication unit 111 associates pen-down information detected by the pressure sensor 107 with identification information (hereinafter referred to as “pen ID”) of the electronic pen 3 described later, and transmits the associated information to the aggregation device 2. Further, when the user finishes writing one handwriting and removes the electronic pen 3 from the paper 4 or the like, the pressure sensor 107 detects pen-up because no writing pressure exceeding a predetermined value is detected. Then, the communication unit 111 associates the pen-up information detected by the pressure sensor 107 with the pen ID and transmits it to the aggregation device 2.

  The LED 105 and the CMOS camera 106 are attached in the vicinity of the pen tip portion 103 of the electronic pen 3, and an opening 102 is formed in a portion of the housing 101 facing the LED 105 and the CMOS camera 106. The LED 105 illuminates infrared rays toward the vicinity of the pen tip portion 103 on the paper 4. The area is slightly deviated from the position where the pen tip 103 contacts the paper 4 or the like. The CMOS camera 106 is provided with an infrared filter that transmits infrared rays and blocks non-infrared rays. The CMOS camera 106 captures a dot pattern in an area illuminated by the LED 105 and processes image data of the dot pattern as a processor. 108.

  Here, since carbon absorbs infrared rays, the infrared rays irradiated by the LED 105 are absorbed by the carbon contained in the dots. Therefore, the dot portion has a small amount of infrared reflection, and the portion other than the dot has a large amount of infrared reflection. By photographing with the CMOS camera 106, a threshold value is provided based on the difference in the amount of reflected infrared light, so that a dot region containing carbon can be distinguished from other regions. Therefore, even when characters, drawings, or the like are printed on the paper 4, the processor 108 can recognize the dot pattern because the printed ink does not absorb in the infrared region. Note that the shooting area by the CMOS camera 106 is a range including a size of about 2 mm × about 2 mm as shown in FIG. 3A, and the shooting by the CMOS camera 106 is performed at regular intervals of about 50 to 100 times per second. Is called. Further, the CMOS camera 106 has a sufficient depth of field in order to photograph dots clearly.

  The processor 108 uses the dot pattern of the image data supplied by the CMOS camera 106 during the user's entry to determine the X and Y coordinates (hereinafter also simply referred to as “coordinate data”) on the handwritten paper 4 or the like to be entered by the user. .) Is continuously calculated. That is, the processor 108 converts the image data of the dot pattern as shown in FIG. 3A supplied by the CMOS camera 106 into the data array shown in FIG. The Y coordinate bit value is converted, and the coordinate data is calculated from the data array by a predetermined calculation method. Note that the processor 108 has a rotation correction processing function for correcting the arrangement of dots on the image due to the angle of the electronic pen 3 facing the dot pattern, and this function is executed during coordinate calculation. Then, the processor 108 associates entry time (time stamp), writing pressure data, and coordinate data transmitted from the real-time clock 110. Since the 6 × 6 dot pattern on the paper 4 does not overlap with the paper 4, when the user enters characters or the like with the electronic pen 3, the processor determines which position on the paper 4 the written position corresponds to. It can be specified by coordinate calculation by 108.

  The memory 109 stores property information such as a pen ID for identifying the electronic pen 3, a pen manufacturer number, and a pen software version. Then, the communication unit 111 associates the pen ID, the entry time (time stamp), the writing pressure data, and the coordinate data, and transmits them to the aggregation device 2. In this case, transmission to the aggregation device 2 by the communication unit 111 is immediately and sequentially performed by wireless transmission such as Bluetooth (registered trademark).

  One handwriting consists of one or a plurality of X and Y coordinates (coordinate points). The first and last coordinate points constituting the handwriting can be identified by the pen-down information and the pen-up information. Hereinafter, a set of one or a plurality of X and Y coordinate data generated between the pen-down and pen-up of the electronic pen 3 and transmitted to the aggregation device 2 is referred to as “handwriting data”. The handwriting data is stored by the aggregation device 2.

  The electronic pen 3 may include a pen portion that is not filled with ink instead of the ink cartridge 104.

  FIG. 6 is a flowchart showing the flow of handwriting aggregation processing in the first embodiment. As shown in FIG. 6, when the processor 108 of the electronic pen 3 detects a pen-down on the paper 4 (step S101), it generates handwriting data and transmits it to the aggregation device 2 (step S102). In the first embodiment, the electronic pen 3 transmits at least the handwriting data and the generation time of the handwriting data, but other data (for example, a pen ID or the like) may be transmitted.

  The generation time of the handwriting data may be any time as long as it is between the time when the electronic pen 3 generates the handwriting data and the time when it is transmitted to the aggregation device 2, but it is the same for all the electronic pens 3. It is desirable to set the timing time.

  The electronic pen 3 generates handwriting data and transmits it to the aggregation device 2 while the student continues to write handwriting on the paper 4. When the student releases the electronic pen 3 from the paper 4 (pen up), the processor 108 of the electronic pen 3 stops transmitting handwriting data and the like to the aggregation device 2 (step S103). Then, when the processor 108 of the electronic pen 3 detects the next pen-down (Yes in step S104), the process is repeated from step S102, and if the next pen-down is not detected (No in step S104), the process ends.

  When receiving the handwriting data or the like from the electronic pen 3, the control unit 21 of the aggregation device 2 stores the handwriting data in the storage unit 22 (step S111) and performs display control processing (step S112). The display control process will be described with reference to FIG. And the control part 21 of the aggregation apparatus 2 will repeat a process from step S111, if the next handwriting data etc. are received (Yes of step S113), and if the next handwriting data etc. are not received (No of step S113), The process ends.

  FIG. 7 is a flowchart showing the flow of display control processing in the first embodiment. As illustrated in FIG. 7, the control unit 21 of the aggregation device 2 determines whether or not the difference between the reception time and the generation time of handwriting data is equal to or greater than a threshold value (step S201). If it is equal to or greater than the threshold (Yes in step S201), the control unit 21 of the aggregation device 2 changes the display mode (step S202) and performs display processing (step S203). On the other hand, when it is less than the threshold (No in step S201), the control unit 21 of the aggregation device 2 performs display processing without changing the display mode (step S203).

  The handwriting data reception time may be any time as long as it is between the time when the aggregation device 2 receives the handwriting data and the time when the determination process of step S201 is performed. It is desirable to set the times at the same timing.

  FIG. 8 is a diagram showing the display screen 201. On the display screen 201, handwriting data of three students “Taro”, “Jiro”, and “Hanako” are collected and displayed as a list of answer contents 211 to 213. In the example of FIG. 8, the question given to the students is to fill in a graph of a certain curve.

  Here, item names such as “name”, “pen ID”, and “answer”, ruled lines, and coordinate axes are printed on the paper 4. The storage unit 22 of the aggregation device 2 stores image data indicating the print contents of the paper 4 in advance. On the other hand, names such as “Taro”, “Jiro”, “Hanako”, and the curve of the graph as the answer result are handwriting data generated and transmitted by the electronic pen 3. Pen IDs such as “1”, “2”, and “3” are data transmitted from the electronic pen 3. That is, the control unit 21 of the aggregation device 2 displays the handwriting data and pen ID received from the electronic pen 3 on the display unit 26 on the image data indicating the print contents of the paper 4. The same applies to the examples shown in FIGS.

  In the example illustrated in FIG. 8, the handwriting data of “Jiro” is delayed and the display mode of the handwriting data of “Jiro” is changed. In other words, in the example illustrated in FIG. 8, the control unit 21 of the aggregation device 2 uses, as delayed handwriting data, handwriting data (= “Jiro” handwriting data) whose difference between the reception time and the generation time is equal to or greater than a threshold value. The display mode of the information regarding is changed. In particular, in the example illustrated in FIG. 8, the control unit 21 of the aggregation device 2 highlights and displays information related to the delayed handwriting data. Thus, the teacher can grasp that the handwriting data of “Jiro” is delayed due to a system problem such as radio interference.

  The information related to the handwriting data is, for example, the handwriting data itself, the pen ID of the electronic pen 3, the name of the student who uses the electronic pen 3, and the like, and may be information associated with the handwriting data. In the example shown in FIG. 8, the handwriting data in the answer column is the display mode change target 221, the student's name is the display mode change target 222, and the pen ID of the electronic pen 3 is the display mode change target 223.

  The change of the display target is, for example, by changing the line color or thickness of handwriting data, changing the color or thickness of characters such as pen ID, the background color, or making the ruled line thicker. is there. In the example illustrated in FIG. 8, the display mode change target 221 has a line thickness of handwriting data changed. In addition, the background color of the display mode change objects 222 and 223 is changed. In FIG. 8, the background color is changed by adding a diagonal line.

  FIG. 9 is a diagram showing the display screen 301. In the display screen 301, handwriting data of three students “Taro”, “Jiro”, and “Hanako” are collected and displayed as answer contents 311 to 313. In the example of FIG. 9, questions given to the students are multiple-choice questions 1 to 3.

  In the example illustrated in FIG. 9, the handwriting data of “Jiro” is delayed, and the display mode of the handwriting data of “Taro” and “Hanako” is changed. In this case, the control unit 21 of the aggregating apparatus 2 sets the handwriting data (= handwriting data of “Jiro”) whose difference between the reception time and the generation time is equal to or greater than the threshold as the delayed handwriting data, and the handwriting data (= The handwriting data of “Taro” and “Hanako”) is used as normal handwriting data, and the display mode of information related to normal handwriting data is changed. In particular, in the example illustrated in FIG. 9, the control unit 21 of the aggregation device 2 displays a difference between the reception time and the generation time related to the delayed handwriting data as a delay time, and delays information related to normal handwriting data by the delay time. As a result, even if the handwriting data of “Jiro” is delayed due to system problems such as wireless interference, the handwriting data of other students will be displayed with the same delay, so the teacher will There is no misunderstanding that handwriting data is delayed.

  In the example illustrated in FIG. 9, the answer content 311 of “Taro” is the display mode change target 321, and the answer content 313 of “Hanako” is the display mode change target 322. For example, when “Jiro” enters his / her name for the first time, the handwriting data is delayed due to radio interference, and thereafter, the handwriting data of “Jiro” is delayed. Then, if “Taro”, “Jiro”, and “Hanako” answered question 1 at the same timing, even if the handwriting data of “Jiro” is delayed, the handwriting data of the three people will be the same in the aggregation device 2 at the same timing. It is displayed on the display unit 26.

  Moreover, you may make it the control part 21 of the aggregation apparatus 2 delay and display the display speed of the information regarding normal handwriting data. As a result, even if the handwriting data of “Jiro” is delayed due to system problems such as wireless interference, the handwriting data of other students is also displayed with a delay, so the teacher can write the handwriting data by “Jiro” 's stumbling There is no misunderstanding that is delayed.

  Unlike the present embodiment, the control unit 21 of the aggregation device 2 displays information related to handwriting data (normal handwriting data) when the display process in step S203 is delayed due to a student's trip. May be changed. As a result, the teacher can easily grasp the delay caused by the student's trip. Here, the control unit 21 of the aggregation device 2 can determine the delay due to the student's trip from the generation time or the reception time of the normal handwriting data of each student. For example, when the generation time or the reception time of the received normal handwriting data has passed a predetermined time from the time when the problem is given, the control unit 21 can determine that the delay is caused by a trip.

  FIG. 10 is a diagram showing a display screen 501. On the display screen 501, handwriting data of three students “Taro”, “Jiro”, and “Hanako” are collected and displayed as a list of answer contents 511 to 513. In the example of FIG. 10, the question given to the students is to fill in a graph of a certain curve similar to FIG. 8.

  In the example illustrated in FIG. 10, the handwriting data of “Jiro” is delayed due to the stumbling of “Jiro”. In the example of the figure, the answer content 512 of “Jiro” is the display mode change target 521. In the display mode change target 521, a message “Guidance Required” is displayed in an overlapping manner in the answer column. As a result, the teacher can easily grasp the delay caused by the student's trip.

Second Embodiment
Next, a second embodiment will be described with reference to FIGS. In the first embodiment, the electronic pen 3 and the aggregation device 2 directly transmit and receive handwriting data, but in the second embodiment, the relay device 5 relays the handwriting data.

  FIG. 11 is a diagram showing an outline of the handwriting collection system 1a. As illustrated in FIG. 11, the handwriting aggregation system 1a includes an electronic pen 3 that generates handwriting data, a paper 4 dedicated to the electronic pen 3, an aggregation device 2 that collects handwriting data generated by the electronic pen 3, and a handwriting. A relay device 5 that relays data, and an access point 6 that connects the aggregation device 2 and the relay device 5 to each other are provided.

  The relay device 5 is, for example, a tablet terminal distributed to each student. However, the relay device 5 may be a desktop PC, a notebook PC, a smartphone, or the like. Note that the hardware configuration of the relay device 5 is the same as that of the aggregation device 2, and thus the description thereof is omitted.

  The relay device 5 receives handwriting data of other students from the aggregation device 2 in addition to relaying the handwriting data received from the associated electronic pen 3 to the aggregation device 2 or displaying it on the display means. The handwriting data of other students is displayed on the display means. This allows students to deepen their understanding with reference to other students' answers. In addition, the aggregation device 2 receives an input of a distribution instruction from the teacher, and distributes handwriting data of other students to the relay device 5 when the distribution instruction is input.

  The access point 6 is, for example, a base unit of a wireless LAN (Local Area Network). The relay device 5 transmits handwriting data to the aggregation device 2 via the access point 6. Further, the aggregation device 2 transmits handwriting data of other students to the relay device 5 via the access point 6. However, the connection form of the aggregation device 2 and the relay device 5 is not limited to wireless connection, and may be wired connection using a LAN cable or the like.

  FIG. 12 is a flowchart illustrating a flow of handwriting aggregation processing according to the second embodiment. As shown in FIG. 12, when the processor 108 of the electronic pen 3 detects a pen-down on the paper 4 (step S601), it generates handwriting data and transmits it to the relay device 5 (step S602). In the second embodiment, the electronic pen 3 transmits at least the handwriting data and the generation time of the handwriting data, but other data (for example, a pen ID or the like) may be transmitted.

  The electronic pen 3 generates handwriting data and transmits it to the relay device 5 while the student continues to write handwriting on the paper 4. When the student removes the electronic pen 3 from the paper 4 (pen up), the processor 108 of the electronic pen 3 stops transmitting handwriting data and the like to the relay device 5 (step S603). Then, when the processor 108 of the electronic pen 3 detects the next pen-down (Yes in step S604), the process is repeated from step S602. When the next pen-down is not detected (No in step S604), the process is terminated.

  When the controller 21 of the relay device 5 relays and receives handwriting data from the electronic pen 3 (step S611), it transfers the handwriting data and the like to the aggregation device 2 (step S612). Here, the relay device 5 transfers the relay reception time to the aggregation device 2 in addition to the handwriting data and the generation time. And the control part 21 of the relay apparatus 5 will repeat a process from step S611, if the following handwriting data etc. are received (Yes of step S613), and if the next handwriting data etc. are not received (No of step S613), End the process.

  The relay reception time may be any time as long as it is from the time when the relay device 5 relays the handwriting data to the time when it is transferred to the aggregation device 2, but the same timing is used in all the relay devices 5. It is desirable to set the time.

  When receiving the handwriting data or the like from the relay device 5, the control unit 21 of the aggregation device 2 stores the handwriting data in the storage unit 22 (step S621) and performs display control processing (step S622). The display control process will be described with reference to FIG. And the control part 21 of the aggregation apparatus 2 will repeat a process from step S621, if the next handwriting data etc. are received (Yes of step S623), and if the next handwriting data etc. are not received (No of step S623), The process ends.

  FIG. 13 is a flowchart showing the flow of display control processing in the second embodiment. As illustrated in FIG. 13, the control unit 21 of the aggregation device 2 determines that any one of the difference between the relay reception time and the generation time of handwriting data, the difference between the reception time and the relay reception time, and the difference between the reception time and the generation time is greater than or equal to the threshold It is determined whether or not (step S701). If any of them is equal to or greater than the threshold (Yes in step S701), the control unit 21 of the aggregation device 2 changes the display mode (step S702) and performs display processing (step S703). On the other hand, if both are less than the threshold (No in step S701), the control unit 21 of the aggregation device 2 performs display processing without changing the display mode (step S703). The change of the display mode is the same as in the first embodiment.

  As described above, according to the handwriting aggregation system of the present invention, handwriting data delayed due to a system problem can be identified.

  Unlike the present embodiment, each relay device 5 may perform display control according to the delay state of each handwriting data. For example, the control unit 21 of each relay device 5 determines whether the difference between the relay reception time and the generation time of each handwriting data is greater than or equal to a threshold value, and when it is determined that the difference is greater than or equal to the threshold value, changes the display mode of handwriting data May be. As a result, handwriting data delayed due to a system problem can be grasped on the display screen of each relay device 5.

  The preferred embodiments of the handwriting aggregation system and the like according to the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to such examples. It will be apparent to those skilled in the art that various changes or modifications can be conceived within the scope of the technical idea disclosed in the present application, and these naturally belong to the technical scope of the present invention. Understood.

1, 1a ……… Handwriting aggregation system 2 ……… Aggregating device 3 ………… Electronic pen 4 ……… Paper 5 ……… Relay device 6 ……… Access point

Claims (8)

A plurality of electronic pens and an aggregation device are connected, the aggregation device aggregates handwriting data generated by the electronic pen, and is a handwriting aggregation system that displays the handwriting data on a display means,
The electronic pen is
Transmitting means for transmitting the handwriting data and the generation time of the handwriting data;
With
The aggregation device is
Receiving means for receiving the handwriting data and the generation time;
If the difference between the reception time of the handwriting data and the generation time is equal to or greater than a threshold value, display control means for changing the display mode of information related to the handwriting data;
Handwriting collection system characterized by comprising. 2. The display control unit according to claim 1, wherein the handwriting data whose difference between the reception time and the generation time is equal to or greater than a threshold is delayed handwriting data, and information on the delayed handwriting data is highlighted and displayed. The handwriting aggregation system described. The display control means uses the handwriting data in which the difference between the reception time and the generation time is a threshold value or more as delayed handwriting data, the handwriting data different from the delayed handwriting data as normal handwriting data, and information on the normal handwriting data The handwriting aggregation system according to claim 1, wherein a display form of the handwriting is changed. The display control means displays the information related to the normal handwriting data by delaying the delay time by using a difference between the reception time and the generation time related to the delayed handwriting data as a delay time. Handwriting aggregation system described in. The handwriting aggregation system according to claim 3, wherein the display control unit displays the information related to the normal handwriting data with a display speed being delayed. Receiving the handwriting data and the generation time from the electronic pen, further comprising a relay device for transmitting to the aggregation device together with the relay reception time of the handwriting data,
The display control means further determines whether or not a difference between the relay reception time and the generation time is equal to or greater than a threshold, or whether or not a difference between the reception time and the relay reception time is equal to or greater than a threshold. The handwriting aggregation system according to any one of claims 1 to 5, wherein a display mode of information related to the handwriting data is changed based on the determination result. A handwriting aggregation method in which a plurality of electronic pens and an aggregation device including a display unit are connected, the aggregation device aggregates handwriting data generated by the electronic pen, and the handwriting data is displayed on the display unit. ,
The electronic pen transmits the handwriting data and the generation time of the handwriting data to the aggregation device; and
A receiving step in which the aggregation device receives the handwriting data and the generation time;
If the difference between the reception time of the handwriting data and the generation time is greater than or equal to a threshold, the aggregation device, a display control step for changing the display mode of information related to the handwriting data;
The handwriting aggregation method characterized by including. A computer is connected to a plurality of electronic pens, is a program for aggregating handwriting data generated by the electronic pen and functioning as an aggregation device for displaying the handwriting data on a display means,
Receiving means for receiving the handwriting data and the generation time of the handwriting data from the electronic pen;
A program for functioning as display control means for changing a display mode of information relating to the handwriting data when the difference between the reception time of the handwriting data and the generation time is equal to or greater than a threshold value.

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