JP7621803B2 - Handwriting assessment system, handwriting assessment method, handwriting assessment program, and writing implement - Google Patents

Description

One aspect of the present disclosure relates to a handwriting assessment system, a handwriting assessment method, a handwriting assessment program, and a writing instrument.

Mechanisms for allowing a writer to perform suitable writing actions are known. For example, Patent Document 1 describes a writing action measurement system for measuring a writer's writing action. This writing action measurement system includes an acquisition unit that acquires writing information including a predetermined detection value related to the writing action, a target information storage unit that stores target information including a target value related to the predetermined detection value, a comparison unit that compares the writing information with the target information, and an output unit that outputs result information indicating the comparison result in the comparison unit.

Patent No. 6630707

There is a need for a method that appropriately encourages the writer to perform the appropriate writing action.

A writing judgment system according to one aspect of the present disclosure includes an acquisition unit that acquires multiple target pressure values generated in a writing implement over a predetermined time span, a calculation unit that calculates a target statistical value using the multiple target pressure values, a determination unit that determines whether the target statistical value exceeds a threshold value, and an output unit that outputs feedback information based on the result of the determination when it is determined that the target statistical value exceeds the threshold value.

In this aspect, feedback information is output when a statistical value of the target pressure value generated in the writing instrument (target statistical value) exceeds a threshold value. Since the feedback information is output based on the statistical value of pressure over a certain time span, rather than on the instantaneous pressure, frequent output of feedback information is unlikely to occur even if a large amount of pressure is repeatedly applied to the writing instrument within a short period of time. This makes it possible to appropriately encourage the writer to perform an appropriate writing action.

According to one aspect of the present disclosure, it is possible to appropriately encourage the writer to perform suitable writing actions.

1 is a diagram illustrating an example of an application of the handwriting judgment system according to the first embodiment. FIG. FIG. 2 is a diagram illustrating an example of a hardware configuration related to the handwriting judgment system according to the first embodiment. FIG. 2 is a schematic diagram showing an example of the configuration of a writing instrument according to the first embodiment. 2 is a diagram illustrating an example of a functional configuration related to the handwriting judgment system according to the first embodiment. FIG. 4 is a flowchart showing an example of the operation of the handwriting assessment system according to the first embodiment. 4 is a flowchart showing an example of the operation of the handwriting assessment system according to the first embodiment. 4 is a flowchart showing an example of the operation of the handwriting assessment system according to the first embodiment. 11 is a graph showing an example of fluctuations in a target pressure value and a target statistical value. 10 is a flowchart showing an example of the operation of the handwriting assessment system according to the second embodiment.

[First embodiment]
Hereinafter, a first embodiment of the present disclosure will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same or equivalent elements are given the same reference numerals, and duplicated descriptions will be omitted.

[System Overview]
The writing judgment system according to the first embodiment is a system that judges whether a statistical value of a plurality of pressure values generated in a writing implement exceeds a threshold value, and outputs feedback information based on the result of the judgment to the writer, thereby encouraging the writer to perform a suitable writing action. A writing implement is a tool used for writing characters, symbols, illustrations, and the like. A writing implement may be, for example, a pen that can write using ink or graphite, such as a ballpoint pen, a fountain pen, a marker, or a mechanical pencil, or may be a pointing device such as a stylus pen. A writer is a person who writes using a writing implement.

The pressure value generated on the writing instrument refers to a numerical value indicating the magnitude of pressure applied to the writing instrument when the writer uses the writing instrument. The writing judgment system continuously or discretely acquires the pressure value generated on the writing instrument over a predetermined time span. The pressure applied to the writing instrument may be, for example, the writing pressure generated by pressing the writing instrument against a medium such as paper, or the grip pressure generated by the writer gripping the writing instrument. In the present disclosure, the writing judgment system acquires the magnitude of the writing pressure as the pressure value generated on the writing instrument. The writing judgment system may acquire the pressure value using a pressure sensor that detects the pressure value generated on the writing instrument, or a load sensor that detects the load value generated on the writing instrument. When a load sensor is used, the writing judgment system may acquire the pressure value by dividing the detected load value by the size of the area where the load is generated. For example, the writing judgment system may acquire the pressure value by detecting the load value generated on the pen tip using a load sensor, and dividing the detected load value by the area of the pen tip.

The handwriting assessment system calculates a statistical value of the multiple acquired pressure values and determines whether the statistical value exceeds a preset threshold value. Here, the statistical value of the pressure values refers to a value calculated by statistically processing the multiple pressure values. The threshold value that serves as the basis for the judgment may be set in advance, for example, by the handwriting assessment system, or by the provider or writer of the handwriting assessment system.

The writing judgment system judges whether the calculated statistical value exceeds a threshold value and outputs feedback information based on the result of the judgment. The feedback information is information related to the pressure generated on the writing instrument. For example, when a writer writes by pressing the writing instrument hard and the statistical value of the pressure value generated on the writing instrument exceeds the threshold value, the writing judgment system may output feedback information indicating that the statistical value of the pressure value generated on the writing instrument has exceeded the threshold value. In one example, the output of the feedback information is related to a process of notifying the writer of the feedback information. The writing judgment system prompts the writer to perform an appropriate writing action by having the writer recognize the feedback information. For example, when feedback information indicating that the statistical value of the pressure value generated on the writing instrument has exceeded the threshold value is reported, the writer who recognizes the feedback information can perform an appropriate writing action, such as reducing the force with which the writer presses the writing instrument to reduce the writing pressure.

The purpose and situation of use of the writing instrument according to the present disclosure are not limited. In this embodiment, the writing instrument is used in a learning situation involving writing. Learning involving writing may be, for example, learning at various schools such as nursery schools, kindergartens, elementary schools, junior high schools, high schools, universities, graduate schools, vocational schools, preparatory schools, and online schools, or at home, or learning at a place or situation other than school or home. The writing instrument may be used not only in learning situations, but also in situations of creating illustrations or diagrams. The writing judgment system according to the present disclosure is not limited to the above-mentioned situations and can be applied to various situations in which a writing instrument is used.

[System Configuration]
FIG. 1 is a diagram showing an example of application of the handwriting judgment system 1 according to the first embodiment. In this embodiment, the handwriting judgment system 1 includes a writer terminal 10, a writing instrument 20, and a database 30. The writer terminal 10 is a computer used by a writer. The type of the writer terminal 10 is not limited, and may be, for example, a mobile terminal such as a high-function mobile phone (smartphone), a tablet terminal, a wearable terminal (for example, a head-mounted display (HMD), smart glasses, or a smart watch), a laptop personal computer, or a mobile phone. Alternatively, the writer terminal 10 may be a stationary terminal such as a desktop personal computer. The writer terminal 10 is connected to the database 30 via a communication network N. The configuration of the communication network N is not limited. The communication network N may be configured to include, for example, the Internet, or may be configured to include an intranet.

The writing instrument 20 is connected to the writer terminal 10 by short-range wireless communication. The configuration of the short-range wireless communication is not limited. The short-range wireless communication may be a communication method such as Bluetooth (registered trademark) or Wi-Fi (registered trademark). In this embodiment, one writing instrument 20 communicates with the writer terminal 10, but the number of writing instruments 20 is not limited. For example, two or more writing instruments 20 may communicate with one writer terminal 10.

The database 30 is a non-transitory storage device that stores various data used by the handwriting assessment system 1. In this embodiment, the database 30 stores threshold data, reference pressure value data, reference statistical value data, target pressure value data, target statistical value data, and cumulative time data, which will be described later. In one example, the database 30 stores such data for multiple writers. The database 30 may be constructed as a single database, or may be a collection of multiple databases.

Figure 2 is a diagram showing an example of a hardware configuration related to the handwriting assessment system 1. Figure 2 shows a terminal computer 100 that functions as a writer terminal 10.

As an example, the terminal computer 100 has, as hardware components, a processor 101, a main memory unit 102, an auxiliary memory unit 103, a communication unit 104, an input interface 105, and an output interface 106.

The processor 101 is a computing device that executes an operating system and application programs. The processor 101 may be, for example, a CPU or a GPU, but the type of the processor 101 is not limited to these.

The main memory unit 102 is a device that stores programs for implementing the scribe terminal 10, calculation results output from the processor 101, and the like. The main memory unit 102 is composed of at least one of a ROM and a RAM, for example.

The auxiliary memory unit 103 is generally a device capable of storing larger amounts of data than the main memory unit 102. The auxiliary memory unit 103 is configured, for example, by a non-volatile storage medium such as a hard disk or a flash memory. The auxiliary memory unit 103 stores the client program P1 for causing the terminal computer 100 to function as the scribe terminal 10, and various types of data.

The communication unit 104 is a device that performs data communication with other computers via the communication network N. The communication unit 104 is configured, for example, by a network card or a wireless communication module.

The input interface 105 is a device that accepts data based on a user's operation or action. For example, the input interface 105 is composed of at least one of a keyboard, an operation button, a pointing device, a microphone, a sensor, and a camera. The keyboard and the operation button may be displayed on a touch panel. Since the type of the input interface 105 is not limited, the data to be input is not limited. For example, the input interface 105 may accept data entered or selected by a keyboard, an operation button, or a pointing device. Alternatively, the input interface 105 may accept voice data entered by a microphone. Alternatively, the input interface 105 may accept image data (e.g., video data or still image data) captured by a camera.

The output interface 106 is a device that outputs data processed by the terminal computer 100. For example, the output interface 106 is composed of at least one of a monitor, a touch panel, an HMD, and a speaker. The display device such as the monitor, touch panel, or HMD displays the processed data on a screen. The speaker outputs the sound represented by the processed audio data.

Each functional element of the writer terminal 10 is realized by loading client program P1, which is an example of a writing judgment program, into processor 101 or main memory unit 102 and having processor 101 execute the program. Client program P1 includes code for realizing each functional element of the writer terminal 10. Processor 101 operates communication unit 104, input interface 105 or output interface 106 in accordance with client program P1, and reads and writes data in main memory unit 102 or auxiliary memory unit 103. Each functional element of the writer terminal 10 is realized by this processing.

The client program P1 may be provided after being non-temporarily recorded on a tangible recording medium such as a CD-ROM, DVD-ROM, or semiconductor memory. Alternatively, the client program P1 may be provided via a communications network as a data signal superimposed on a carrier wave.

Figure 3 is a schematic diagram showing an example of the configuration of the writing instrument 20. Figure 3 shows a cross section of the writing instrument 20 cut along a plane along the axis A direction. In this embodiment, the writing instrument 20 is a ballpoint pen. As shown in Figure 3, the writing instrument 20 has a barrel portion 201, a refill 204, a sensor 207, a substrate 208, and a light 209.

The tube portion 201 is a substantially cylindrical member extending along the axial direction A of the writing instrument 20. The refill 204 is a substantially cylindrical member filled with ink. The refill 204 has an outer diameter smaller than the inner diameter of the tube portion 201 and can be accommodated in the tube portion 201. When the refill 204 is accommodated in the tube portion 201, the tip portion 205 of the refill 204 is exposed from an opening 202 provided at one end of the tube portion 201. When the writer holds the tube portion 201 and presses the tip portion 205 of the refill 204 against the medium, the ink inside the refill 204 oozes out from the tip portion 205. The writer can write by moving the writing instrument 20 while pressing the tip portion 205 against the medium.

A sensor 207 is provided on the base end 206 side of the refill 204, which is located opposite the tip end 205 in the axial A direction. The sensor 207 is a pressure sensor that detects the writing pressure generated in the writing instrument 20. In this embodiment, the sensor 207 detects the pressure transmitted from the tip end 205 to the base end 206 during writing as the writing pressure. The sensor 207 may have, for example, a detection surface that faces the base end 206 of the refill 204. The sensor 207 may detect the writing pressure by the detection surface being pressed by the base end 206 during writing.

The substrate 208 is a flexible substrate housed inside the tube portion 201. The substrate 208 is equipped with a processor (not shown) that processes data related to the writing pressure detected by the sensor 207, and a communication unit (not shown) for performing short-range wireless communication with the writer terminal 10.

The light 209 is a component that emits light. In this embodiment, the writing judgment system 1 notifies the writer of feedback information by turning on the light 209. For example, the writing judgment system 1 may turn on the light 209 when a statistical value of the pressure value generated in the writing instrument 20 exceeds a threshold value. The light 209 may be configured using a light-emitting element such as an LED (Light Emitting Diode). In this embodiment, the light 209 is provided at the end of the writing instrument 20, but the position at which the light 209 is provided is not limited.

Figure 4 is a diagram showing an example of a functional configuration related to the writing judgment system 1. The writer terminal 10 includes a calculation unit 11, a judgment unit 12, a feedback unit 13, a measurement unit 14, and a communication unit 15 as functional elements. The calculation unit 11 is a functional element that calculates a statistical value of a plurality of pressure values acquired by the writing instrument 20. The judgment unit 12 is a functional element that performs various judgment processes, such as whether or not the statistical value calculated by the calculation unit 11 exceeds a threshold value. The feedback unit 13 is a functional element that generates feedback information based on the result of the judgment by the judgment unit 12. The measurement unit 14 is a functional element that measures time. The communication unit 15 is a functional element that transmits and receives various data or information between the writing instrument 20 and the database 30. In this embodiment, the communication unit 15 transmits (outputs) feedback information to the writing instrument 20 and causes the writing instrument 20 to notify the feedback information. Therefore, the communication unit 15 functions as an output unit.

The writing instrument 20 has the following functional elements: an acquisition unit 21, a notification unit 22, and a communication unit 23. The acquisition unit 21 is a functional element that acquires the pressure value generated in the writing instrument 20 using a sensor 207. The notification unit 22 is a functional element that notifies feedback information. The communication unit 23 is a functional element that transmits and receives various data or information between the writing instrument 20 and the writing terminal 10.

[System Operation]
FIG. 5 is a flowchart showing the operation of the handwriting judgment system 1 as a processing flow S1. With reference to FIG. 5, an overall picture of the processing by the handwriting judgment system 1 will be described. The processing by the handwriting judgment system 1 is roughly divided into a threshold setting process (step S11) for setting a threshold, a judgment process (step S12) for judging whether or not to notify feedback information, and a notification process (step S13) for notifying feedback information. The judgment process may be executed at a certain time interval after the threshold setting process is completed (i.e., it does not have to be executed continuously), or may be executed continuously after the threshold setting process. The notification process is usually executed continuously after the judgment process is completed, but it does not necessarily have to be executed continuously after the judgment process.

In step S11, the writing judgment system 1 sets a threshold value to be used in the subsequent judgment process. The set threshold value is used for comparison with the target statistical value in the judgment process. Specifically, first, the acquisition unit 21 acquires multiple pressure values generated in the writing instrument 20 by the sensor 207. Then, the calculation unit 11 calculates a statistical value of the multiple pressure values and sets the statistical value as the threshold value. Here, the statistical value set as the threshold value is called a reference statistical value, and the pressure value used in the calculation of the reference statistical value is called a reference pressure value. The period during which the reference pressure value is acquired by the acquisition unit 21 is called a preparation period. The preparation period may be set under circumstances in which the writer can easily perform a suitable writing action, for example, in a situation other than learning in which excessive writing pressure is unlikely to be generated on the writing instrument 20. Details of the threshold setting process will be described later with reference to FIG. 6.

In step S12, the writing judgment system 1 judges whether or not to report feedback information. Specifically, first, the acquisition unit 21 acquires a plurality of pressure values generated in the writing instrument 20 by the sensor 207. After that, the calculation unit 11 calculates a statistical value of the plurality of pressure values, and the judgment unit 12 judges whether or not to report feedback information based on the statistical value. The statistical value used to judge whether or not to report feedback information is called a target statistical value, and the pressure value used to calculate the target statistical value is called a target pressure value. The period during which the target pressure value is acquired by the acquisition unit 21 is called a judgment period. The judgment period may be set under a situation in which it is generally difficult for a writer to perform a suitable writing action, and may be set, for example, in a learning situation in which excessive writing pressure is likely to occur on the writing instrument 20.

The determination unit 12 determines whether or not to output feedback information based on the target statistical value as described above. For example, the determination unit 12 may determine that feedback information is to be output when the target statistical value exceeds a threshold value, or may determine that feedback information is to be output when the cumulative time during which the target statistical value exceeds the threshold value (hereinafter simply referred to as cumulative time) becomes equal to or longer than a reference time. Details of the determination process will be described later with reference to FIG. 7.

In step S13, the writing judgment system 1 outputs feedback information based on the result of the judgment process in step S12. Specifically, when the judgment unit 12 judges that the feedback information is to be output in step S12, the feedback unit 13 generates the feedback information, and the communication unit 15 transmits the feedback information to the writing instrument 20. The notification unit 22 then notifies the feedback information. For example, the notification unit 22 may notify the feedback information indicating that the accumulated time is equal to or greater than the reference time by turning on the light 209. The notification unit 22 may change the notification mode depending on the content of the feedback information. For example, the light color or brightness of the light 209 may be changed depending on whether the accumulated time slightly exceeds the reference time or greatly exceeds it. If the writing instrument 20 has other notification means (for example, a speaker, a display, or a vibrator), the notification unit 22 may notify the feedback information by a method corresponding to the notification means (for example, outputting a voice, displaying a character string, or generating a vibration).

Figure 6 is a flowchart showing the threshold setting process performed by the handwriting assessment system 1 (more specifically, the writer terminal 10) as process flow S2. The threshold setting process will be described with reference to Figure 6. The threshold setting process shown in Figure 6 is a more specific version of the process of step S11 in Figure 5.

In step S21, the communication unit 15 of the writer terminal 10 receives the reference pressure value from the communication unit 23 of the writing instrument 20. The reference pressure value received by the communication unit 15 is acquired by the acquisition unit 21. Here, an example of a method for acquiring the reference pressure value, which is a premise of step S21, will be described. The acquisition unit 21 acquires the pressure value generated in the writing instrument 20 during the preparation period as the reference pressure value using the sensor 207. The preparation period may be started by a predetermined operation on the writer terminal 10 or the writing instrument 20 by the writer. The acquisition unit 21 may acquire the reference pressure value at predetermined time intervals (e.g., 0.01 second intervals) during the preparation period, or may acquire the reference pressure value continuously.

The reference pressure value acquired by the acquisition unit 21 is transmitted to the communication unit 15 of the writer terminal 10 by the communication unit 23 of the writing instrument 20. The communication unit 23 may transmit the reference pressure value to the communication unit 15 each time the acquisition unit 21 acquires a reference pressure value, or may transmit multiple reference pressure values together to the communication unit 15 at predetermined time intervals (e.g., 0.1 second intervals). The communication unit 15 stores the received reference pressure value as reference pressure value data in a storage device such as the main memory unit 102, the auxiliary memory unit 103, the database 30, etc.

In step S22, the calculation unit 11 calculates a reference statistical value based on the multiple reference pressure values. Specifically, the calculation unit 11 reads out reference pressure value data from the storage device and calculates the reference statistical value by performing statistical processing on the multiple reference pressure values. The calculation unit 11 may calculate, for example, the average value, median, or mode of the multiple reference pressure values as the reference statistical value. The average value may be, for example, the arithmetic average value or weighted average value of the multiple reference pressure values. The reference statistical value may be calculated based on the moving average value of the reference pressure values. The moving average value may be, for example, a simple moving average value, a weighted moving average value, or an exponential moving average value.

Here, a method for calculating the moving average value of the reference pressure value will be described. First, the calculation unit 11 calculates the average value of the multiple reference pressure values acquired during a period having a predetermined time width (hereinafter referred to as a period of interest) among the multiple reference pressure values acquired by the acquisition unit 21. At this time, the calculation unit 11 may calculate the average value using only the reference pressure values that exceed a lower limit value (e.g., 0 gf/ ^mm2 ) among the multiple reference pressure values during the period of interest. 1 gf/ ^mm2 is converted to 0.00980665 N/ ^mm2 . The time width and lower limit value of the period of interest may be arbitrarily set by the provider of the handwriting judgment system 1 or the writer.

Then, the calculation unit 11 shifts the positions of the start and end points of the attention period while maintaining the size of the time width (i.e., shifts the time of the attention period), and calculates the average value of the multiple reference pressure values acquired in the shifted attention period. At this time, the calculation unit 11 may shift the attention period by, for example, the time interval (e.g., 0.01 seconds) at which the acquisition unit 21 acquires the reference pressure value. The calculation unit 11 repeats the temporal shift of the attention period and the calculation of the average value of the reference pressure values acquired in the shifted attention period to calculate multiple average values. Each average value calculated while shifting the attention period in this way is called a moving average value. The calculation unit 11 may calculate the reference statistical value by further statistically processing the calculated multiple moving average values. The calculation unit 11 stores the reference statistical value as reference statistical value data in a storage device such as the main memory unit 102, the auxiliary memory unit 103, or the database 30.

In step S23, the calculation unit 11 sets the reference statistical value calculated as a threshold value. Specifically, the calculation unit 11 stores the reference statistical value calculated in step S22 as threshold data in a storage device such as the main storage unit 102, the auxiliary storage unit 103, or the database 30. In the present disclosure, the handwriting assessment system 1 sets the threshold value based on the reference pressure value, but if the provider of the handwriting assessment system 1 or the writer sets the threshold value, the above-mentioned threshold setting process may be omitted.

Figure 7 is a flowchart showing the judgment process performed by the handwriting judgment system 1 (more specifically, the writer terminal 10) as process flow S3. The judgment process will be described with reference to Figure 7. The judgment process shown in Figure 7 is a more specific version of the process of step S12 in Figure 5.

In step S31, the communication unit 15 of the writer terminal 10 receives the target pressure value from the communication unit 23 of the writing instrument 20. The target pressure value received by the communication unit 15 is acquired by the acquisition unit 21. Here, an example of a method for acquiring the target pressure value, which is a premise of step S31, will be described. The acquisition unit 21 acquires the pressure value generated in the writing instrument 20 during the judgment period as the target pressure value using the sensor 207. The judgment period may be started by a predetermined operation on the writer terminal 10 or the writing instrument 20 by the writer as a trigger. The acquisition unit 21 may acquire the target pressure value at a predetermined time interval during the judgment period, for example, or may acquire the target pressure value continuously. In the following embodiment, the acquisition unit 21 acquires the target pressure value at 0.01 second intervals.

The communication unit 23 of the writing instrument 20 transmits the target pressure value acquired by the acquisition unit 21 to the communication unit 15 of the writer terminal 10. The communication unit 23 may transmit the target pressure value to the communication unit 15 each time the acquisition unit 21 acquires the target pressure value, or may transmit multiple target pressure values together to the communication unit 15 at predetermined time intervals (e.g., 0.1 second intervals). The communication unit 15 stores the received target pressure value as target pressure value data in a storage device such as the main memory unit 102, the auxiliary memory unit 103, or the database 30.

In step S32, the calculation unit 11 calculates a target statistical value based on the multiple target pressure values. Specifically, the calculation unit 11 reads out the target pressure value data from the storage device and calculates the target statistical value by performing statistical processing on the multiple target pressure values. The calculation unit 11 may calculate, for example, the average value, median or mode of the multiple target pressure values as the target statistical value. The average value may be, for example, the arithmetic average value or weighted average value of the multiple target pressure values. The target statistical value may be a moving average value of the target pressure values. The moving average value may be, for example, a simple moving average value, a weighted moving average value and an exponential moving average value.

The method for calculating the moving average value of the target pressure value may be the same as the method for calculating the moving average value of the reference pressure value described above. That is, the calculation unit 11 may calculate multiple moving average values for the target pressure value by repeating a process of determining a period of interest having a predetermined time width, calculating the average value of multiple target pressure values acquired during the period of interest, and a process of shifting the period of interest in time. The time width of the period of interest may be arbitrarily set by the provider of the writing assessment system 1 or the writer. The time width of the period of interest and the amount by which the period of interest is shifted may be different when calculating the moving average value of the target pressure value and when calculating the moving average value of the reference pressure value.

In the following embodiment, the calculation unit 11 calculates the moving average value of the target pressure value as the target statistical value. Specifically, in step S32, the calculation unit 11 determines a period of interest, and calculates the average value of multiple target pressure values acquired during the period of interest as the target statistical value. In this embodiment, the calculation unit 11 sets the time width of the period of interest so that the number of data points for multiple target pressure values acquired during the period of interest is 50. In other words, the calculation unit 11 calculates the average value of 50 target pressure values as the moving average value. At this time, the calculation unit 11 may set the end point of the period of interest to the point at which the latest target pressure value is acquired by the acquisition unit 21.

The calculation unit 11 may calculate the average value using only the target pressure values that exceed the calculation lower limit value among the multiple target pressure values in the period of interest. The calculation lower limit value may be arbitrarily set by the provider of the writing judgment system 1 or the writer, and may be set to, for example, 0 gf/ ^mm2 . The number of target pressure values that are actually used to calculate the target statistical value is called the number of valid data. For example, assume that the total number of data for the target pressure value in the period of interest is 50, and the number of data for the target pressure value that exceeds the calculation lower limit value is 30. In this case, the target statistical value is calculated using only the 30 target pressure values that exceed the calculation lower limit value, and the number of valid data is 30.

In this embodiment, the calculation lower limit is set to 0 gf/ ^mm2 , and the calculation unit 11 calculates the target statistical value using only the target pressure value exceeding 0 gf/ ^mm2 . Usually, when the writer is not writing, no writing pressure is generated on the writing implement 20. Therefore, when the magnitude of a certain target pressure value is 0 gf/ ^mm2 , the target pressure value is presumed to be a target pressure value acquired when the writer is not writing. Therefore, by setting the calculation lower limit to 0 gf/mm2, it is possible to exclude the target pressure value acquired when writing is not performed from the multiple target pressure values used for calculating the target statistical value. In other words, the calculation unit ¹¹ can calculate the target statistical value using only the target pressure value acquired when the writer is writing.

The calculation unit 11 stores the calculated target statistical value as target statistical value data in a storage device such as the main memory unit 102, the auxiliary memory unit 103, or the database 30. When the scribe terminal 10 is equipped with a display device, the display device may display the target statistical value calculated by the calculation unit 11 in real time. At this time, the display device may also display the threshold value of the target statistical value.

In step S33, the determination unit 12 determines whether the target statistical value exceeds the threshold value. Specifically, the determination unit 12 reads the target statistical value data and the threshold value data from the storage device, and performs the determination by comparing the target statistical value with the threshold value. For example, if the threshold value is set to 80 gf/mm ² (approximately 0.78 N/mm ² ) and the target statistical value calculated by the calculation unit 11 is 50 gf/mm ² (approximately 0.49 N/mm ² ), the determination unit 12 determines that the target statistical value does not exceed the threshold value. On the other hand, if the threshold value is set to 80 gf/mm ² and the target statistical value calculated by the calculation unit 11 is 100 gf/mm ² (approximately 0.98 N/mm ² ), the determination unit 12 determines that the target statistical value exceeds the threshold value.

If the determination unit 12 determines that the target statistical value does not exceed the threshold value, the process returns to step S31. In the process of step S31 that is executed again, the communication unit 15 receives the target pressure value (hereinafter referred to as the added target pressure value) newly acquired by the acquisition unit 21. Then, the process proceeds to step S32, where the calculation unit 11 calculates the target statistical value taking into account the added target pressure value. Specifically, the calculation unit 11 shifts the attention period so that the time point at which the added target pressure value is acquired is included in the attention period. In this embodiment, since the time interval at which the acquisition unit 21 acquires the target pressure value is 0.01 seconds, the calculation unit 11 shifts the attention period by 0.01 seconds. The calculation unit 11 performs statistical processing on the multiple target pressure values (multiple pressure values including the added pressure value) in the shifted attention period to calculate a new target statistical value (moving average value). On the other hand, if the determination unit 12 determines that the target statistical value exceeds the threshold value, the process proceeds to step S34.

In step S34, the determination unit 12 determines whether the cumulative time during which the target statistical value exceeds the threshold is equal to or greater than a reference time. The cumulative time is the total time during which the target statistical value exceeds the threshold. Here, an example of a method for measuring the cumulative time is described.

First, as a premise, the judgment process shown by the process flow S3 in FIG. 7 is a process that is repeatedly executed along with the acquisition of the target pressure value by the acquisition unit 21. That is, the process of step S33 included in the process flow S3 (process of determining whether the target statistical value exceeds the threshold value or not) is also repeatedly executed in the same manner. When it is determined in step S33 of a certain judgment process that the target statistical value exceeds the threshold value, the measurement unit 14 starts measuring the elapsed time from the judgment time. The measurement unit 14 continues measuring the elapsed time until it is determined in step S33 of any judgment process executed thereafter that the target statistical value does not exceed the threshold value. The measurement unit 14 calculates the total value (i.e., the accumulated time) of the time during which the target statistical value exceeds the threshold value by repeating the measurement of the elapsed time. The measurement unit 14 stores the calculated accumulated time as accumulated time data in a storage device such as the main memory unit 102, the auxiliary memory unit 103, or the database 30. The measurement unit 14 may reset the cumulative time (i.e., set the cumulative time to zero) when the determination unit 12 determines that the target statistical value does not exceed the threshold value, or when the time during which the target statistical value is determined not to exceed the threshold value continues for a predetermined time or longer. In this embodiment, the measurement unit 14 resets the cumulative time at the point in time when the determination unit 12 determines that the target statistical value does not exceed the threshold value.

Next, an example of a method for setting the reference time that is a prerequisite for step S34 will be described. The reference time may be set in advance by the handwriting assessment system 1, for example, during a preparation period. Specifically, the calculation unit 11 first identifies the maximum value of the multiple reference pressure values acquired by the acquisition unit 21. Next, the calculation unit 11 calculates the average value of the multiple reference pressure values, and calculates the ratio of the average value to the identified maximum value. The calculation unit 11 may set the reference time shorter the higher the calculated ratio (i.e., the larger the average value), and may set the reference time longer the smaller the ratio. The reference time may be set arbitrarily by the provider of the handwriting assessment system 1 or the writer.

If the determination unit 12 determines that the cumulative time is not equal to or greater than the reference time, the process returns to step S31. When returning to the process of step S31, as described above, a new target statistical value is calculated taking into account the additional target pressure value newly acquired by the acquisition unit 21. On the other hand, if the determination unit 12 determines that the cumulative time is equal to or greater than the reference time, the process proceeds to step S35.

In step S35, the determination unit 12 determines whether the number of valid data of the reference target statistical value is equal to or greater than the reference minimum number of data. Here, the reference target statistical value refers to the target statistical value at the time when it is determined that the cumulative time is equal to or greater than the reference time. As described above, the number of valid data is the number of data of the target pressure value used to calculate the target statistical value. Therefore, the number of valid data of the reference target statistical value is the number of data of the target pressure value used to calculate the reference target statistical value. The reference minimum number of data may be set arbitrarily by the provider of the writing determination system 1 or the writer. For example, if the reference minimum number of data is set to 40 and the number of valid data of the reference target statistical value is 30, the determination unit 12 determines that the number of valid data of the reference target statistical value is not equal to or greater than the reference minimum number of data. On the other hand, if the reference minimum number of data is set to 40 and the number of valid data of the reference target statistical value is 50, the determination unit 12 determines that the number of valid data of the reference target statistical value is equal to or greater than the reference minimum number of data.

If the determination unit 12 determines that the number of valid data for the reference target statistical value is not equal to or greater than the reference minimum number of data, the process returns to step S31. When returning to the process of step S31, as described above, a new target statistical value is calculated taking into account the additional target pressure value newly acquired by the acquisition unit 21. On the other hand, if the determination unit 12 determines that the number of valid data for the reference target statistical value is equal to or greater than the reference minimum number of data, the process proceeds to step S36.

In step S36, the determination unit 12 determines whether the cumulative data number is equal to or greater than the cumulative minimum data number. Here, the cumulative data number refers to the number of data points of the target pressure values that exceed the calculation lower limit value among all the target pressure values acquired by the acquisition unit 21 during the accumulation time. In this embodiment, the calculation lower limit value is set to 0 gf/ ^mm2 . In this case, for example, if the number of data points of all the target pressure values acquired during the accumulation time is 100, and the number of data points of the target pressure values that do not exceed the calculation lower limit value (i.e., 0 gf/ ^mm2 ) is 40, the cumulative data number is 60. The method of calculating the cumulative data number is not limited.

The cumulative minimum number of data may be set arbitrarily by the provider of the handwriting assessment system 1 or the writer. For example, if the cumulative minimum number of data is set to 40 and the cumulative number of data is 35, the assessment unit 12 assesses that the cumulative number of data is not equal to or greater than the cumulative minimum number of data. On the other hand, if the cumulative minimum number of data is set to 40 and the cumulative number of data is 80, the assessment unit 12 assesses that the cumulative number of data is equal to or greater than the cumulative minimum number of data.

If the determination unit 12 determines that the cumulative data number is not equal to or greater than the cumulative minimum data number, the process returns to step S31. When returning to the process of step S31, as described above, a new target statistical value is calculated taking into account the additional target pressure value newly acquired by the acquisition unit 21. On the other hand, if the determination unit 12 determines that the cumulative data number is equal to or greater than the cumulative minimum data number, the process proceeds to step S36.

In step S37, the determination unit 12 determines whether the target pressure value at the output timing exceeds the output lower limit value. The output timing is set to a point after the determination unit 12 determines that the cumulative time is equal to or greater than the reference time. In one example, the output timing corresponds to a timing at which feedback information is notified to the writer (also referred to as "notification timing"). At the output timing, an estimation is performed as to whether the writer is writing with the writing implement 20 (hereinafter, referred to as writing estimation). The writing estimation is performed based on the determination result as to whether the target pressure value exceeds the output lower limit value. Specifically, when it is determined that the target pressure value at the output timing exceeds the output lower limit value, it is estimated that writing is being performed at the output timing. That is, the output lower limit value is set based on the pressure value that normally occurs when the writer writes. The output lower limit value may be set to, for example, 0 gf/ ^mm2 . The writing judgment system 1 notifies the feedback information when it is estimated that the writer is writing with the writing implement 20 at the output timing (i.e., when it is determined that the target pressure value at the output timing exceeds the output lower limit value). For example, the time point at which the judgment unit 12 judges that the accumulated time is equal to or longer than the reference time may be set as the output timing.

The significance of performing handwriting estimation at the output timing will now be explained. Even if it is determined in step S34 that the cumulative time is equal to or greater than the reference time, there are cases in which the writer is not writing at the time of this determination. If feedback information were to be notified based solely on the fact that the cumulative time was determined to be equal to or greater than the reference time, there is a risk that the feedback information would be notified even though the writer is not writing. Therefore, by performing handwriting estimation at the output timing and notifying the feedback information when it is estimated that writing is being performed, it is possible to prevent feedback information from being notified at a time when writing is not being performed.

If the determination unit 12 determines that the target pressure value at the output timing does not exceed the output lower limit, the process returns to step S31. When returning to the process of step S31, as described above, a new target statistical value is calculated taking into account the additional target pressure value newly acquired by the acquisition unit 21. On the other hand, if the determination unit 12 determines that the target pressure value at the output timing exceeds the output lower limit, the process proceeds to step S38.

In step S38, the feedback unit 13 generates feedback information, and the communication unit 15 of the writer terminal 10 transmits the feedback information to the communication unit 23 of the writing instrument 20. The feedback information may include instruction information for causing the notification unit 22 to turn on the light 209. The instruction information may be, for example, information regarding the lighting time, lighting color, or luminosity of the light 209. When the notification unit 22 notifies the feedback information by a notification means other than the light 209 (for example, a speaker), the feedback information may include instruction information suitable for the notification means (for example, information regarding the volume). The notification unit 22 receives the feedback information from the communication unit 23 and notifies the feedback information. In this embodiment, the notification unit 22 turns on the light 209 based on the instruction information included in the feedback information.

The order of the processes in the process flow S3 described with reference to FIG. 7, particularly steps S33 to S37, may be changed as appropriate. For example, the process of determining whether the target pressure value at the output timing exceeds the output lower limit value (step S37) may be executed before the process of determining whether the number of valid data of the reference target statistical value is equal to or greater than the reference minimum data number (step S35). At least one of the processes from steps S33 to S37 may be omitted. For example, if the processes from steps S34 to S37 are omitted, when it is determined in step S33 that the target statistical value exceeds the threshold value, the process proceeds to step S38, which transmits feedback information.

In the process flow S3, other judgment processes by the judgment unit 12 may be added as appropriate. For example, when the output (notification) of feedback information by the handwriting judgment system 1 is repeated, the judgment unit 12 may judge whether or not a predetermined time has elapsed since the previous output of feedback information. If the judgment unit 12 judges that the predetermined time has not elapsed, the notification unit 22 may not notify the feedback information. As another example, the judgment unit 12 may judge whether or not the number of times feedback information is output in a predetermined time exceeds a predetermined number. If it is determined that the number of times the feedback information is output exceeds the predetermined number, the notification unit 22 may not notify the feedback information.

Fig. 8 is a graph showing an example of fluctuations in the target pressure value and the target statistical value. Specific examples of cases where the notification unit 22 notifies feedback information and cases where the notification unit 22 does not notify feedback information will be described with reference to Fig. 8. In the example described below, it is assumed that the notification of feedback information is performed when all the judgment conditions from step S33 to step S37 described above with reference to Fig. 7 are satisfied. In Fig. 8, the horizontal axis indicates time (unit: seconds), and the vertical axis indicates pen pressure (unit: gf/ ^mm2 ).

The graph indicated by the dashed line in FIG. 8 shows an example of the target pressure value acquired by the acquisition unit 21. In the example shown in FIG. 8, the acquisition unit 21 acquires the target pressure value at 0.01 second intervals from the time 0 seconds. That is, the number of data of the target pressure value acquired by the acquisition unit 21 per second is 100. The graph indicated by the solid line shows the fluctuation of the target statistical value calculated by the calculation unit 11. The calculation unit 11 calculates the target statistical value using a plurality of target pressure values from the time 0.5 seconds. The calculation unit 11 calculates the moving average value of the 50 target pressure values acquired most recently among the plurality of target pressure values acquired by the acquisition unit 21 as the target statistical value. That is, the calculation unit 11 sets the attention period to 0.5 seconds and calculates the average value of the target pressure values included in the attention period. The calculation lower limit value is set to 0 gf/ ^mm2 . Therefore, the calculation unit 11 does not use all the target pressure values in the attention period, but only uses the target pressure values exceeding 0 gf/ ^mm2 to calculate the target statistical value.

The threshold for the target statistical value is set to 80 gf/ ^mm2 , and is indicated by a dashed horizontal line in FIG. 8. The measurement unit 14 measures the time during which the target statistical value exceeds the threshold as the accumulated time, and resets the accumulated time when the target statistical value falls below the threshold. The reference time is set to 0.9 seconds. The output timing is set to the point at which the accumulated time becomes the reference time (i.e., the point at which the accumulated time becomes 0.9 seconds). The output lower limit is set to 0 gf/ ^mm2 . The reference minimum number of data and the accumulated minimum number of data are both set to 40.

First, consider whether feedback information is to be notified during the periods from time t1 to t2, from time t3 to t4, from time t5 to t6, and from time t9 to t10. During these periods, the target statistical value continues to exceed the threshold value (80 gf/ ^mm2 ), so the condition of step S33 shown in Figure 7 is met at each point in time. However, the target statistical value falls below the threshold value before the cumulative time reaches the reference time (0.9 seconds), so the condition of step S34 is not met. Therefore, feedback information is not to be notified during these periods.

Next, consider whether feedback information is notified during the period from time t7 to t8. The period from time t7 to t8 is 1.01 seconds, and the time when 0.9 seconds have passed since time t7 is set as time T1. Since the target statistical value continues to exceed the threshold during the period from time t7 to t8, the condition of step S33 is satisfied at any time. Since the measurement unit 14 resets the cumulative time when the target statistical value falls below the threshold, the cumulative time at time T1 is the elapsed time (0.9 seconds) from time t7. Therefore, the cumulative time at time T1 is equal to or greater than the reference time, and the condition of step S34 is satisfied. The number of valid data of the reference target statistical value (target statistical value at time T1) is equal to or greater than the reference minimum number of data. Therefore, the condition of step S35 is satisfied. The number of cumulative data from time t7 to T1 is set to 48. Therefore, the cumulative data number at time T1 is equal to or greater than the cumulative minimum number of data, and the condition of step S35 is satisfied. However, the target pressure value at the output timing (time T1 when the accumulated time becomes the reference time) is 0 gf/ ^mm2 and does not exceed the output lower limit. Therefore, the condition of step S37 is not satisfied, and feedback information is not notified in the period from time t7 to t8.

Next, consider whether feedback information is notified during the period from time t11 to t12. The period from time t11 to t12 is 1.03 seconds, and the time when 0.9 seconds have passed since time t11 is set as time T2. Since the target statistical value continues to exceed the threshold value during the period from time t11 to t12, the condition of step S33 is satisfied at any time. The accumulated time at time T2 is the elapsed time from time t11 (0.9 seconds). Therefore, the accumulated time at time T2 is equal to or greater than the reference time, and the condition of step S34 is satisfied. The number of valid data of the reference target statistical value (target statistical value at time T2) is equal to or greater than the reference minimum number of data. Therefore, the condition of step S35 is satisfied. The number of accumulated data from time t11 to T2 is set to 65. Therefore, the number of accumulated data at time T2 is equal to or greater than the accumulated minimum number of data, and the condition of step S35 is satisfied. Furthermore, the target pressure value at the output timing (time T2 at which the accumulated time becomes the reference time) is about 80 gf/ ^mm2 , which exceeds the output lower limit value. Therefore, the condition of step S37 is satisfied. As described above, since all of the conditions from step S33 to step S37 are satisfied, feedback information is notified in the period from time t11 to t12 (specifically, time T2).

Next, consider whether feedback information is notified during the period from time t13 to t14. The period from time t13 to t14 is 0.92 seconds, and the time when 0.9 seconds have passed since time t13 is set as time T3. Since the target statistical value continues to exceed the threshold during the period from time t13 to t14, the condition of step S33 is satisfied at any time. The accumulated time at time T3 is the elapsed time from time t13 (0.9 seconds). Therefore, the accumulated time at time T3 is equal to or greater than the reference time, and the condition of step S34 is satisfied. The number of valid data of the reference target statistical value (target statistical value at time T3) is equal to or greater than the reference minimum number of data. Therefore, the condition of step S35 is satisfied. In this example, the accumulated data number from time t13 to T3 is 34. The target pressure value after time T3 continues to be 0 gf/ ^mm2 , and the accumulated data number remains at 34 and does not increase. Therefore, the accumulated data number is not equal to or greater than the accumulated minimum number of data, and the condition of step S36 is not satisfied. Therefore, no feedback information is reported during the period from time t13 to time t14.

[effect]
As described above, a writing judgment system according to one aspect of the present disclosure includes an acquisition unit that acquires multiple target pressure values generated in a writing instrument over a predetermined time period, a calculation unit that calculates a target statistical value using the multiple target pressure values, a judgment unit that judges whether the target statistical value exceeds a threshold value, and an output unit that outputs feedback information based on the result of the judgment when it is judged that the target statistical value exceeds the threshold value.

A writing assessment method according to one aspect of the present disclosure is executed by a writing assessment system including a processor. The writing assessment method includes the steps of acquiring a plurality of target pressure values generated in a writing implement over a predetermined time span, calculating a target statistical value using the plurality of target pressure values, determining whether or not the target statistical value exceeds a threshold value, and, when it is determined that the target statistical value exceeds the threshold value, outputting feedback information based on the result of the determination.

A writing assessment program according to one aspect of the present disclosure causes a computer to execute the steps of acquiring multiple target pressure values generated in a writing implement over a predetermined time span, calculating a target statistical value using the multiple target pressure values, determining whether the target statistical value exceeds a threshold value, and, if it is determined that the target statistical value exceeds the threshold value, outputting feedback information based on the result of the determination.

A writing instrument according to one aspect of the present disclosure includes an acquisition unit that acquires multiple target pressure values generated in the writing instrument over a predetermined time span, and an output unit that outputs information according to the result of a determination when the determination unit determines that a target statistical value calculated using the multiple target pressure values exceeds a threshold value.

In this aspect, feedback information is output when a statistical value of the target pressure value generated in the writing instrument (target statistical value) exceeds a threshold value. Since the feedback information is output based on the statistical value of pressure over a certain time span, rather than on the instantaneous pressure, frequent output of feedback information is unlikely to occur even if a large amount of pressure is repeatedly applied to the writing instrument within a short period of time. This makes it possible to appropriately encourage the writer to perform an appropriate writing action.

In a writing judgment system according to another aspect, the judgment unit may judge whether the cumulative time during which the target statistical value exceeds the threshold is equal to or longer than a reference time. The output unit may output feedback information when it is judged that the cumulative time is equal to or longer than the reference time. In this way, by outputting feedback information when it is judged that the cumulative time during which the target statistical value exceeds the threshold is equal to or longer than the reference time, frequent output of feedback information is less likely to occur. This makes it possible to more appropriately encourage the writer to perform suitable writing actions.

In a writing judgment system according to another aspect, the output unit may output feedback information when the target pressure value exceeds the output lower limit value after it is determined that the accumulated time is equal to or greater than the reference time. This makes it possible to estimate, for example, based on the target pressure value whether or not the writer is writing with a writing implement at the output timing. This makes it possible to prevent feedback information from being output even when writing is not being performed, and makes it possible to output feedback information at an appropriate timing.

In a writing assessment system according to another aspect, the acquisition unit may acquire a plurality of reference pressure values for setting the threshold value. The calculation unit may calculate a reference statistical value that is a statistical value of the plurality of reference pressure values, and set the reference statistical value as the threshold value. This makes it possible to set a threshold value suitable for each writer. For example, the threshold value can be appropriately set by acquiring a reference pressure value when writing under conditions that make it easy to perform a suitable writing action (for example, when writing for purposes other than learning).

In a writing assessment system according to another aspect, the calculation unit may calculate a target statistical value using one or more target pressure values that exceed a lower calculation limit value among the multiple target pressure values acquired by the acquisition unit. This makes it possible to appropriately calculate a target statistical value without using a target pressure value that is not suitable for calculating the target statistical value (for example, a target pressure value acquired when the writer is not writing).

In a writing judgment system according to another aspect, the acquisition unit may acquire the writing pressure value generated in the writing implement as the target pressure value. This makes it possible to output feedback information about the writing pressure, and encourages the writer to write with an appropriate writing pressure.

In a writing judgment system according to another aspect, the acquisition unit may acquire the grip pressure value generated in the writing implement as the target pressure value. This makes it possible to output feedback information about the grip pressure, and encourage the writer to write with an appropriate grip pressure.

In a writing assessment system according to another aspect, the calculation unit may calculate the average value of multiple target pressure values as the target statistical value. This makes it difficult for the target statistical value to change suddenly even if a large amount of pressure is applied to the writing implement within a short period of time. This makes it difficult for feedback information to be output frequently, and can appropriately encourage the writer to perform optimal writing actions.

[Second embodiment]
Next, a second embodiment of the present disclosure will be described. In the following description, differences from the first embodiment described above will be mainly described, and common points may be omitted. FIG. 9 is a flowchart showing an example of a process performed by the handwriting judgment system (more specifically, the writer terminal) according to the second embodiment as a process flow S4. The handwriting judgment system according to the second embodiment has the same functional elements as the handwriting judgment system 1 according to the first embodiment. With reference to FIG. 9, a process of determining whether or not to output (report) feedback information performed by the determination unit 12 according to the second embodiment will be described.

In step S41, the communication unit 15 of the writer terminal 10 receives the target pressure value from the communication unit 23 of the writing instrument 20. The target pressure value received by the communication unit 15 is acquired by the acquisition unit 21. As described in the first embodiment above, the acquisition unit 21 may acquire, for example, the writing pressure value or the grip pressure value generated on the writing instrument 20 as the target pressure value. The acquisition unit 21 may acquire the target pressure value at a predetermined time interval, for example, or may acquire the target pressure value continuously. In this embodiment, the acquisition unit 21 acquires the writing pressure value generated on the writing instrument 20 at 0.01 second intervals using the sensor 207.

In step S42, the determination unit 12 determines whether the target pressure value exceeds the threshold value. The threshold value may be set in advance based on a reference pressure value acquired during a preparation period before the processing flow S4 shown in FIG. 9 is executed, for example. Specifically, the calculation unit 11 may calculate a statistical value of a plurality of reference pressure values and set the statistical value as the threshold value. The threshold value may be arbitrarily set by the provider of the writing judgment system 1 or the writer. If the determination unit 12 determines that the target pressure value does not exceed the threshold value, the process returns to step S41. In this case, in the process of step S41 that is executed again, the communication unit 15 receives the target pressure value newly acquired by the acquisition unit 21. On the other hand, if the determination unit 12 determines that the target pressure value exceeds the threshold value, the process proceeds to step S43.

In step S43, the judgment unit 12 judges whether a predetermined time has passed since the previous output (notification) of feedback information. The predetermined time may be arbitrarily set by, for example, the provider of the writing judgment system 1 or the writer. The predetermined time may be set to, for example, 5 seconds or more and 30 seconds or less. The time that has passed since the previous output of feedback information may be measured by the measurement unit 14.

If the determination unit 12 determines that the predetermined time has not elapsed since the previous output of feedback information, the process returns to step S41. In this case, in the process of step S41 that is executed again, the communication unit 15 receives the target pressure value newly acquired by the acquisition unit 21. On the other hand, if the determination unit 12 determines that the predetermined time has elapsed since the previous output of feedback information, the process proceeds to step S44. If there is no previous output of feedback information (i.e., when feedback information is to be notified for the first time), the determination unit 12 may determine that the predetermined time has elapsed and the process proceeds to step S44.

In step S44, the feedback unit 13 generates feedback information, and the communication unit 15 of the writer terminal 10 transmits the feedback information to the communication unit 23 of the writing instrument 20. The notification unit 22 then receives the feedback information from the communication unit 23 and notifies the user of the feedback information. In this embodiment, the notification unit 22 turns on the light 209 based on the instruction information included in the feedback information.

[effect]
As described above, a writing judgment system according to one aspect of the present disclosure includes an acquisition unit that acquires a target pressure value generated in a writing instrument, a judgment unit that determines whether the target pressure value exceeds a threshold value, and an output unit that outputs feedback information based on the result of the judgment if a predetermined time has elapsed since the previous output.

In this aspect, the writing assessment system does not output feedback information simply when the target pressure value generated in the writing implement exceeds a threshold value, but outputs feedback information when a predetermined time has passed since the previous output. This makes it difficult for feedback information to be output frequently, and appropriately encourages the writer to perform suitable writing actions.

[Modification]
The present disclosure has been described in detail above based on the embodiments. However, the present disclosure is not limited to the above embodiments. The present disclosure can be modified in various ways without departing from the spirit and scope of the present disclosure.

In the above embodiment, the writer terminal 10 includes the calculation unit 11, the judgment unit 12, the feedback unit 13, and the measurement unit 14, but at least one of these functional elements may be implemented in the writing instrument 20. In particular, when all of these functional elements are implemented in the writing instrument 20, the writing judgment system 1 can notify the feedback information without using the writer terminal 10. In the above embodiment, the writing instrument 20 includes the notification unit 22, but this functional element may be implemented in the writer terminal 10. In this case, the writer terminal 10 notifies the writer of the feedback information. This notification by the writer terminal 10 is an example of outputting feedback information, and therefore, in this modified example, the writer terminal 10 also has a function equivalent to the output unit. The writing judgment system 1 may include a server separate from the writer terminal 10. In this case, at least one of the above functional elements included in the writer terminal 10 may be implemented in the server.

In the above embodiment, the writer terminal 10 or the database 30 stores various data such as threshold data. However, if the writing instrument 20 is equipped with a storage device, the storage device may store various data.

In this disclosure, the expression "at least one processor executes a first process, executes a second process, ... executes an nth process" or a corresponding expression is a concept that includes cases where the entity executing the n processes from the first process to the nth process (i.e., the processor) changes midway. In other words, this expression is a concept that includes both cases where all n processes are executed by the same processor and cases where the processor changes among the n processes according to an arbitrary policy.

The processing procedure of the method executed by at least one processor is not limited to the example in the above embodiment. For example, some of the steps (processing) described above may be omitted, or each step may be executed in a different order. In addition, any two or more of the steps described above may be combined, or some of the steps may be modified or deleted. Alternatively, other steps may be executed in addition to each of the steps described above.

1...handwriting judgment system, 10...writer terminal, 11...calculation unit, 12...judgment unit, 13...feedback unit, 14...measurement unit, 15...communication unit, 20...writing instrument, 21...acquisition unit, 22...alarm unit, 23...communication unit, 30...database, 100...terminal computer, 101...processor, 102...main memory unit, 103...auxiliary memory unit, 104...communication unit, 105...input interface, 106...output interface, 201...tubular portion, 202...opening, 204...refill, 205...tip portion, 206...base portion, 207...sensor, 208...substrate, 209...light, P1...client program.

Claims (10)

an acquisition unit that acquires a plurality of target pressure values generated on the writing instrument within a predetermined time span;
A calculation unit that performs statistical processing on the plurality of target pressure values to calculate a target statistical value that is an average value, a median value, or a mode value of the plurality of target pressure values;
a determination unit that determines whether a cumulative time , which is a total value of the time during which the target statistical value exceeds a threshold value, is equal to or greater than a reference time;
an output unit that outputs feedback information based on a result of the determination when it is determined that the cumulative time is equal to or greater than the reference time;
A writing assessment system comprising: The output unit outputs the feedback information when the target pressure value exceeds an output lower limit value after the accumulated time is determined to be equal to or greater than the reference time.
The handwriting judgment system according to claim 1 . The acquisition unit acquires a plurality of reference pressure values for setting the threshold value,
The calculation unit calculates a reference statistical value which is a statistical value of the plurality of reference pressure values, and sets the reference statistical value as the threshold value.
The handwriting judgment system according to claim 1 or 2. the calculation unit calculates the target statistical value using one or more target pressure values that exceed a calculation lower limit value among the plurality of target pressure values acquired by the acquisition unit.
The handwriting judgment system according to any one of claims 1 to 3. The acquisition unit acquires a writing pressure value generated on the writing instrument as the target pressure value.
The handwriting judgment system according to any one of claims 1 to 4. The acquisition unit acquires a grip pressure value generated in the writing instrument as the target pressure value.
The handwriting judgment system according to any one of claims 1 to 4. The calculation unit calculates an average value of the plurality of target pressure values as the target statistical value.
The handwriting judgment system according to any one of claims 1 to 6. A handwriting assessment method executed by a handwriting assessment system having a processor, comprising:
acquiring a plurality of target pressure values generated on the writing instrument over a predetermined time span;
performing statistical processing on the plurality of target pressure values to calculate a target statistical value which is an average value, a median value, or a mode value of the plurality of target pressure values;
determining whether a cumulative time , which is a total value of the time during which the target statistical value exceeds a threshold value, is equal to or greater than a reference time;
outputting feedback information based on a result of the determination when the cumulative time is determined to be equal to or greater than the reference time;
A written assessment method including: acquiring a plurality of target pressure values generated on the writing instrument over a predetermined time span;
performing statistical processing on the plurality of target pressure values to calculate a target statistical value which is an average value, a median value, or a mode value of the plurality of target pressure values;
determining whether a cumulative time , which is a total value of the time during which the target statistical value exceeds a threshold value, is equal to or greater than a reference time;
outputting feedback information based on a result of the determination when the cumulative time is determined to be equal to or greater than the reference time;
A handwriting judgment program that causes a computer to execute the above. an acquisition unit that acquires a plurality of target pressure values generated on the writing instrument within a predetermined time span;
an output unit that outputs information according to a result of the determination when the determination unit determines that a cumulative time, which is a total value of the time during which a target statistical value , which is an average value, a median value, or a mode of the plurality of target pressure values calculated by performing statistical processing on the plurality of target pressure values, exceeds a threshold value, is equal to or longer than a reference time;
A writing instrument comprising:

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