WO2013039205A1 - Electronic writing apparatus and electronic writing processing program - Google Patents

Abstract

This electronic writing apparatus (2) has a mounting part (24) for mounting a paper medium (70). In a writing operation, a pressure area where the paper medium (70) is pressed by a pen (3) is detected, as is the pressure force in the pressure area. It is determined whether the magnitude of the pressure force in the detected pressure area is at or above a predetermined designated threshold. The relative positional relationship among multiple pressure areas is detected when the multiple pressure areas are detected at the same time. When multiple pressure areas are detected, an area pressed by a pen (3) is identified from among the multiple pressure areas in accordance with the pressure determination results and the relative position detection results, and stroke data corresponding to the record on the paper medium (70) is generated using the position information of the pressure area thus identified.

Description

Electronic writing apparatus and electronic writing processing program

The present invention relates to an electronic writing apparatus and an electronic writing processing program for recording description contents as electronic data.

2. Description of the Related Art An electronic writing device that records the description content of an operator on a writing medium as electronic data is already known (see, for example, Patent Document 1). This electronic writing apparatus has a placement part (inner part of the main body frame) and, for example, a pressure-sensitive touch panel (handwriting input part). When the operator performs a desired writing operation on the writing medium using the writing tool (mechanical pencil) in a state where the writing medium (memo paper, notebook, etc.) is placed on the placement unit, the tip of the writing instrument Is transmitted to the mounting section through the writing medium. As a result, the pressed position and the pressing force at that time are detected by the pressure detection means provided in the touch panel. By continuously acquiring the position information of the pressed location thus detected, stroke data corresponding to the description of the operator on the writing medium is generated, whereby the description content of the operator is electronically recorded. Data can be recorded.

Utility Model Registration No. 3028106

By the way, when the operator performs a writing operation on the writing medium placed on the placement unit as described above, the operator's palm, nail, and operator depending on how the operator holds the writing instrument and the writing posture. There is a case where a portion other than the tip of a writing instrument such as a cuff portion of the clothes or a wristband of an operator presses the writing medium. In such a case, since the pressing force is transmitted to the placement unit through the writing medium, the pressing force that is not the writing tool is erroneously detected as a pressing portion by the writing tool, and the operator's There was a possibility that the written contents could not be recorded accurately.

An object of the present invention is to provide an electronic writing apparatus and an electronic writing processing program capable of generating stroke data by reliably using only position information of a pressed portion by a writing instrument and recording an operator's description with high accuracy. It is in.

In order to achieve the above object, the electronic writing device according to the first invention of the present application is provided in a placement portion for placing a writing medium on which a writing operation of an operator using a writing instrument is performed, and the placement portion described above, At the time of the writing operation, the pressing place where the writing tool presses the writing medium, the pressure detecting means for detecting the pressing force at the pressing place, and the pressing place detected by the pressure detecting means. When there are a plurality of pressure locations that are simultaneously detected by the pressure determination means that determines whether the magnitude of the pressing force is equal to or greater than a predetermined threshold value, and the pressure detection means, the plurality The relative position detection means for detecting the relative positional relationship between the pressed locations, and when there are a plurality of pressed locations detected simultaneously by the pressure detection means, the determination result of the pressure determination means and the relative position detection According to the detection result of the means, using the writing press specifying means for specifying the pressing place by the writing tool included in the plurality of pressing places, and the position information of the pressing place specified by the writing press specifying means, Stroke data generating means for generating stroke data corresponding to the description on the writing medium.
In order to achieve the above object, the electronic writing processing program according to the thirteenth aspect of the present invention is provided in a mounting unit for mounting a writing medium on which an operator's writing operation using a writing instrument is performed, and the above-described mounting unit. In the writing operation, with respect to the computing means of the electronic writing device, the pressing portion where the writing tool pressed the writing medium, and the pressure detecting means for detecting the pressing force at the pressing location, A pressure determination procedure for determining whether or not the magnitude of the pressing force at the pressing location detected by the pressure detecting means is equal to or greater than a predetermined threshold value, and the pressure detecting means simultaneously detect When there are a plurality of pressed locations, there are a plurality of pressed locations simultaneously detected by the relative position detection procedure for detecting the relative positional relationship between the plurality of pressed locations and the pressure detecting means. In addition, according to the determination result of the pressure determination procedure and the detection result of the relative position detection procedure, a writing press specifying procedure for specifying a pressing location by the writing instrument included in the plurality of pressing locations, and the writing press specification A stroke data generation procedure for generating stroke data corresponding to the description on the writing medium is executed using position information of the pressed location specified by the procedure.

1st invention of this application and 13th invention have a mounting part and a pressure detection means. When the operator performs a desired writing operation on the writing medium using the writing tool while the writing medium is placed on the placement portion, the pressing force by the writing tool tip (lower end) is placed over the writing medium. It is transmitted to the station. As a result, the pressed position and the pressing force at that time are detected by the pressure detecting means provided in the mounting portion (so-called pressure sensitive method). By continuously acquiring the position information of the pressed location thus detected, stroke data corresponding to the description of the operator on the writing medium can be obtained by the stroke data generation means (or stroke data generation procedure). Generated. Thereby, the description content of the operator can be recorded as electronic data.

Here, when the operator performs a writing operation on the writing medium placed on the placement unit as described above, the operator's palm, nail, and operation may be performed depending on how the writing instrument is held and the writing posture. A portion that is not the tip of a writing instrument such as a cuff portion of an operator's clothes or a band of an operator's wristwatch may press the writing medium. Even in such a case, since the pressing force is transmitted to the placement unit through the writing medium, the pressing force that is not the writing tool may be erroneously detected by the pressure detection means (assuming that it is a pressing portion by the writing tool). There is.

Therefore, in the first and thirteenth inventions of the present application, a pressure determination means (or pressure determination procedure) and a relative position detection means (or relative position detection procedure) are provided, and further, the pressure determination means (or pressure determination procedure) is provided. A writing press specifying means (or writing press specifying procedure) is provided for specifying a location to be pressed by the writing tool in accordance with the determination result and the detection result of the relative position detecting means (or relative position detecting procedure). In the pressure determination means (or pressure determination procedure), it is determined whether or not the magnitude of the pressing force detected by the pressure detection means is greater than or equal to a predetermined threshold value. As a result, by setting the threshold value to a relatively large value as appropriate, it is possible to specify the pressing position of the pressing force smaller than the pressing force generated when writing with the writing instrument, such as the pressing force of the operator's palm. By means (or writing press specifying procedure), it can be surely excluded from the processing target.

In addition, when the nail, the cuff, the wristband or the like presses the writing medium at the time of writing by the operator as described above, the pressure detecting means simultaneously detects the pressed position by the writing instrument and the pressed position by the nail. Will do. In such a case, the relative position detection means (or relative position detection procedure) detects the relative positional relationship between the plurality of pressed locations. Generally, when an operator performs writing while holding a writing instrument by hand, the operator sees between the pressing position of the tip of the writing instrument and the pressing position of the nail, cuff, wristwatch band, etc. There is a specific relative positional relationship (for example, the pressing part of the writing instrument is positioned above the pressing part of the nail or the like. Alternatively, in the case of a right-handed operator, the pressing part of the writing instrument is more than the pressing part of the nail or the like. In general, the movement of the pressing portion of the writing instrument is faster than the moving speed of the pressing portion such as a nail). Using this, in the writing press specifying means (or writing press specifying procedure), based on the detection result of the relative positional relationship of the plurality of pressed locations by the relative position detecting means (or relative position detecting procedure) The pressing part by the said nail | claw, a cuff part, a wristband, etc. is reliably excluded from a process target, and the pressing part by a writing instrument can be specified.

As described above, in the first and thirteenth inventions of the present application, the stroke data is generated by reliably using only the position information of the pressed portion by the writing instrument (while excluding the pressed portion by other than the writing instrument). be able to. As a result, the description content of the operator can be converted into electronic data with high accuracy and recorded.

According to a second aspect of the present invention, in the first aspect of the invention, the writing pressure specifying means determines the magnitude of the pressing force by the pressure determining means when there are a plurality of pressing locations detected simultaneously by the pressure detecting means. The at least one pressed location determined to be greater than or equal to the threshold value and the relative position detecting means detects the uppermost position as viewed from the operator among the entire at least one pressed location. One pressing location is specified as a pressing location by the writing instrument.

Usually, as viewed from the operator, the pressed position by the tip of the writing instrument is located above the pressed position by the nail, the cuff, the wristband or the like. In the second invention of the present application, by utilizing this fact, it is possible to accurately identify the pressed portion by the writing tool while reliably excluding the pressed portion other than the writing tool from the processing target.

According to a third aspect of the present invention, in the first aspect of the present invention, the writing pressure specifying means determines the magnitude of the pressing force by the pressure determining means when there are a plurality of pressing locations detected simultaneously by the pressure detecting means. It is at least one of the pressed locations determined to be equal to or greater than the threshold value, and is detected by the relative position detecting means to be the leftmost when viewed from the operator among the entire at least one pressed location. One pressed location is specified as a location pressed by the writing instrument.

When the operator is right-handed, the pressing location by the tip of the writing instrument is usually located to the left of the pressing location by the nail, cuff, wristwatch band, etc. as viewed from the operator. In the third invention of the present application, by utilizing this fact, it is possible to accurately identify the pressed portion by the writing tool while reliably excluding the pressed portion other than the writing tool from the processing target.

According to a fourth aspect of the present invention, in the first aspect of the invention, the writing pressure specifying means determines the magnitude of the pressing force by the pressure determining means when there are a plurality of pressing points detected simultaneously by the pressure detecting means. It is at least one of the pressed locations determined to be equal to or greater than the threshold value, and is detected by the relative position detecting means to be the rightmost when viewed from the operator among the entire at least one pressed location. One pressed location is specified as a location pressed by the writing instrument.

When the operator is left-handed, the pressing location by the tip of the writing instrument is usually located to the right of the pressing location by the nail, cuff, wristwatch band, etc. as viewed from the operator. In the fourth invention of the present application, by utilizing this fact, it is possible to accurately identify the pressed portion by the writing tool while reliably excluding the pressed portion other than the writing tool from the processing target.

In a fifth aspect based on the first aspect, the writing pressure specifying means determines the magnitude of the pressing force by the pressure determining means when there are a plurality of pressing locations detected simultaneously by the pressure detecting means. It is at least one of the pressed locations determined to be greater than or equal to the threshold value, and is the uppermost and leftmost as viewed from the operator among the at least one pressed location by the relative position detecting means. It is characterized by specifying one press location where this is detected as a press location by the writing instrument.

When the operator is right-handed, the pressing location by the tip of the writing instrument is usually located to the left and above the pressing location by the nail, cuff, wristwatch band, etc. as viewed from the operator. In the fifth invention of the present application, by utilizing this fact, it is possible to specify the pressed position by the writing tool while more reliably excluding the pressed position by other than the writing tool from the processing target.

According to a sixth aspect of the present invention, in the first aspect of the invention, the writing pressure specifying means determines the magnitude of the pressing force by the pressure determining means when there are a plurality of pressing locations detected simultaneously by the pressure detecting means. It is at least one of the pressed locations determined to be greater than or equal to the threshold value, and is the uppermost and rightmost as viewed from the operator of the entire at least one pressed location by the relative position detecting means. It is characterized by specifying one press location where this is detected as a press location by the writing instrument.

When the operator is left-handed, the pressing position by the tip of the writing instrument is usually located to the right and above the pressing position by the nail, cuff, wristwatch band, etc. as viewed from the operator. In the sixth invention of the present application, by utilizing this fact, it is possible to specify the pressed position by the writing tool while more reliably excluding the pressed position by other than the writing tool from the processing target.

According to a seventh invention, in any one of the third to sixth inventions, the magnitude of the pressing force at each of the plurality of pressing locations detected simultaneously by the pressure detecting means is the threshold value determined by the pressure determining means. A plurality of pressing locations when the relative position detecting means detects that the plurality of pressing locations are within a predetermined proximity range to each other. Based on the distribution shape of the group of pressing points specified by the palm pressing specification unit and the palm pressing specifying unit that specifies that the group is a group of pressing points by the palm of the operator. Operating arm detecting means for detecting whether there is a left-hand operation or not, and the writing press specifying means specifies the pressing location by the writing instrument based on the detection result of the operating arm detecting means. And wherein the Ukoto.

When a pressing force by the palm is applied to the writing medium during writing, the pressing force is smaller than the pressing force by the tip of the writing instrument due to the shape of the palm. In this case, since the palm area is relatively large, the relatively small pressing force is generated at a plurality of locations over a relatively wide range. Corresponding to this, in the seventh invention of the present application, palm pressing specifying means is provided, and a plurality of pressing points having relatively low pressing force and existing in the proximity range are specified as a group of pressing points by the palm.

Also, at this time, the distribution shape of the group of pressed points by the palm is a shape corresponding to the palm of the right hand in the operator of the right hand operation, and a shape corresponding to the palm of the left hand in the operator of the left hand operation. The shape should be different. The seventh invention of the present application utilizes this, and the operating arm detection means detects whether the operator is a right-hand operation or a left-hand operation based on the distribution shape of the group of pressed locations. And in a writing press specific | specification means, the press location with a writing implement is specified based on the said detection result.

Thereby, for example, the operator's dominant arm is automatically detected without performing a reporting operation such as whether the operator is right-handed (right-handed) or left-handed (left-handed) in advance. Since the corresponding processing is performed, the convenience for the operator can be improved.

According to an eighth aspect of the present invention, in the second aspect of the present invention, a predetermined pressing force in which the magnitude of the pressing force at each of the plurality of pressing points detected simultaneously by the pressure detecting unit is less than the threshold value by the pressure determining unit. When it is determined that it is within the range, and the relative position detection means detects that the plurality of pressed locations are within a predetermined proximity range, the plurality of pressed locations are determined by the operator. It further has palm pressing specifying means for specifying a group of pressing positions by the palm, and the writing press specifying means is specified by the palm pressing specifying means among a plurality of pressing spots simultaneously detected by the pressure detecting means. The above-mentioned group of pressed locations and the pressed locations positioned below the set of pressed locations as viewed from the operator are excluded from the object, and the features of the pressed locations by the writing instrument are excluded. And performing.

When a pressing force by the palm is applied to the writing medium during writing, the pressing force is smaller than the pressing force by the tip of the writing instrument due to the shape of the palm. In this case, since the palm area is relatively large, the relatively small pressing force is generated at a plurality of locations over a relatively wide range. Corresponding to this, in the eighth invention of the present application, palm pressing specifying means is provided, and a plurality of pressing locations having a relatively low pressing force and existing in the proximity range are specified as a group of pressing locations by the palm. On the other hand, in a normal operator's writing posture, as viewed from the operator, it is common that the pressed location by the tip of the writing instrument is located above the pressed location by the palm. Therefore, in the eighth invention of the present application, the group of pressed locations by the palm specified as described above and the pressed locations positioned below the operator as viewed from the operator are excluded from the processing object by the writing press specifying means. On the other hand, the pressing part is specified by the writing instrument. Thereby, the press location by a writing instrument can be pinpointed with high precision and rapidly, reliably excluding the press location by a palm.

Also, for example, during the writing operation of the operator, at the moment when the writing instrument is moving in the inter-character space between the characters, the pressing location by the writing instrument is not detected, and a group of pressing locations by the palm, and The pressed part by the cuff part, the wristband, or the like located below is detected. In the eighth invention of the present application, as described above, by removing the group of pressed points and the pressed points positioned below the operator from the processing object, the blanks as described above are moved. There is also an effect that it is possible to reliably prevent erroneous detection at the moment of being, and to specify a pressed position with a writing instrument with high accuracy.

According to a ninth invention, in the eighth invention, the writing press specifying means includes the group of press places specified by the palm press specifying means among the plurality of press spots simultaneously detected by the pressure detecting means, and , While excluding, from the subject, pressing locations located below the group of pressing locations as viewed from the operator, and positioned on the left side of the group of pressing locations as viewed from the operator by the relative position detection means The pressing location by the writing instrument is identified from the pressing locations to be performed.

When the operator is right-handed, at the time of writing, it is common that the pressed position by the tip of the writing instrument is located on the left side of the pressed position by the palm as seen from the operator. In the ninth invention of the present application, using this fact, the press location by the writing implement is specified from the press location located on the left side of the group of press locations by the palm specified as described above by the writing press specifying means. The Thereby, the press location by a writing instrument can be specified still more rapidly and with high precision.

According to a tenth aspect of the present invention, in the eighth aspect of the invention, the writing press specifying unit includes the group of press points specified by the palm press specifying unit among the plurality of press points simultaneously detected by the pressure detecting unit, and , While excluding, from the subject, pressing locations located below the group of pressing locations as viewed from the operator, and positioned on the right side of the group of pressing locations as viewed from the operator by the relative position detecting means. The pressing location by the writing instrument is identified from the pressing locations to be performed.

When the operator is left-handed, at the time of writing, it is common that the pressed position by the tip of the writing instrument is located on the right side of the pressed position by the palm as seen from the operator. In the tenth invention of the present application, by using this fact, the pressing position by the writing tool is specified from the pressing positions positioned on the right side of the group of pressing positions by the palm specified as described above by the writing press specifying means. The Thereby, the press location by a writing instrument can be specified still more rapidly and with high precision.

In an eleventh aspect of the present invention, in the ninth or tenth aspect of the present invention, whether the operator is a right-hand operation or a left-hand operation is detected based on a distribution shape of the group of pressing points specified by the palm pressing specification means. And a writing press specifying means for specifying a location to be pressed by the writing instrument based on a detection result of the operating arm detecting means.

When a group of places pressed by the palm is specified by the palm pressing specifying means, the distribution shape is a shape corresponding to the palm of the right hand in the operator of the right hand operation, and a shape corresponding to the palm of the left hand in the operator of the left hand operation. And both should have different shapes. The eleventh invention of the present application utilizes this, and the operating arm detection means detects whether the operator is a right-handed operation or a left-handed operation based on the distribution shape of the group of pressed locations. Then, the writing press specifying means specifies the pressed portion by the writing tool based on the detection result.

Thereby, for example, the operator's dominant arm is automatically detected without performing a reporting operation such as whether the operator is right-handed (right-handed) or left-handed (left-handed) in advance. Since the corresponding processing is performed, the convenience for the operator can be improved.

In a twelfth aspect according to any one of the first to eleventh aspects, the writing pressure specifying means includes the pressing force determined by the pressure determining means when there are a plurality of pressing points detected simultaneously by the pressure detecting means. And the relative position detecting means detects that the moving speed is the fastest among all the at least one pressed portion, the size of which is determined to be greater than or equal to the threshold value. One pressed location is specified as a location pressed by the writing instrument.

At the time of writing, for example, the pressed position by the tip of the writing instrument moves finely and quickly in small increments according to the stroke, while the pressed position by the nail, cuff, wristband, etc. moves slowly to slide one by one. Therefore, the moving speed of the pressed part by the tip of the writing instrument is often faster than the moving speed of the pressed part by the nail or the like. In the twelfth invention of the present application, corresponding to this, the pressing portion with the fastest moving speed is specified by the writing press specifying means as the pressing portion by the writing instrument. Thereby, the press location by a writing implement can be specified (while certainly excluding the press location other than a writing implement from processing objects).

According to the present invention, the stroke data can be generated with certainty using only the position information of the pressed part by the writing instrument, so that the description content of the operator can be recorded with high accuracy.

It is a system configuration figure showing the whole handwriting input system provided with the electronic writing device of one embodiment of the present invention. It is a schematic diagram for demonstrating the principle of the press detection with a touch panel. It is a functional block diagram showing the electric constitution of an electronic writing apparatus. It is explanatory drawing explaining stroke data. It is explanatory drawing explaining the case where it misdetects by the contact of a fingernail or the band of a wristwatch. It is explanatory drawing explaining the case where it detects erroneously by the contact of a fingernail or a cuff part. It is explanatory drawing explaining the case where it misdetects by the contact of a little finger. It is explanatory drawing explaining the method of specifying the press position of a pen point. It is a flowchart showing the control procedure which CPU performs. It is a flowchart showing the control procedure which CPU performs in the modification specified by the leftmost pressing location. It is a flowchart showing the control procedure which CPU performs in the modification which detects a dominant arm automatically with a palm shape. It is a flowchart showing the control procedure which CPU performs in the modification which narrows down data using the position of a palm. It is a flowchart showing the control procedure which CPU performs in the modification which specifies the press position of a pen based on a moving speed.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

<System outline>
In FIG. 1, the handwriting input system 1 provided with the electronic writing apparatus 2 of this embodiment is shown. In the following description, the upper side, the lower side, the right side, the left side, the near side, and the depth side of the sheet of FIG. 1 are respectively referred to as the upper side, the lower side, the right side, the left side, the near side, and the depth side of the electronic writing apparatus 2. Define and explain.

As shown in FIG. 1, the handwriting input system 1 includes an electronic writing device 2 for writing with a general-purpose pen 3 (writing tool) such as a normal ballpoint pen or a mechanical pencil, and a display 4.

<Electronic writing device>
The electronic writing device 2 has a thin rectangular parallelepiped shape that is long in the vertical direction in plan view. On the lower side of the electronic writing device 2, a concave-shaped mounting portion 24 is provided so as to occupy most of the front side of the electronic writing device 2. For example, a paper medium 70 (writing medium) made of a predetermined sheet is placed on the placement unit 24.

<Touch panel>
At this time, the touch panel 25 is provided so as to be in the same range as the placement unit 24. The touch panel 25 detects coordinate information indicating the position of the pen 3 (for example, the upper left portion of the placement unit 24 is the origin (0, 0), details will be described later). The placement unit 24 holds the paper medium 70 in such a posture that the upper left corner of the paper medium 70 matches the origin in this example.

In this example, a known configuration and detection method of the touch panel 25 can be used. For example, a pressure-sensitive method using a transparent conductive film made of ITO (indium tin oxide) can be used. This pressure-sensitive method applies the principle of a pressure-sensitive structure using a resistive film sensor, which is a known technique, and detects the position pressed by the pen 3 by measuring a voltage change. As shown in FIG. 2, the internal structure is such that a glass (may be a film) 302 and a film 303, each of which is a transparent electrode film, for example, an ITO conductive layer 301, are placed slightly through an insulating bonding material 304. A gap is provided and pasted. Insulating dot spacers 305 are arranged at predetermined intervals on the surface of the transparent electrode film 301 of either the glass 302 or the film 303. When the operator writes on the paper medium 70 using the pen 3 in a manner of writing characters with a normal pencil or ballpoint pen, the pressure applied by the tip of the pen 3 is transmitted to the film 303 via the paper medium 70, and the film At the pressed portion of 303, the transparent electrode films 301 on the film 303 side and the glass 302 side come into contact with each other and electricity flows. In this way, the touch location and the pressing force at the press location are detected by the touch panel 25. That is, the touch panel 25 having the structure shown in FIG. 2 functions as the pressure detection means described in each claim.

<Detection of coordinate information>
The current generated in the touch panel 25 as described above is guided from the touch panel 25 to the CPU 201 (see FIG. 3 described later) via the connector tail 306, whereby the position of the pen 3 is detected by the CPU 201 as discrete coordinate information. Is done. That is, the CPU 201 acquires a plurality of pieces of position information (that is, the coordinate information) corresponding to the movement of the pen 3 when the operator performs the writing operation. As described above with reference to FIG. 1, in this embodiment, the coordinates (X, Y) at the upper left of the touch panel 25 are the origin (0, 0), the right direction is the X axis, and the lower direction is the Y axis. Use the system. That is, the value of the X coordinate represents the horizontal position on the touch panel 25 (in other words, the placement unit 24), and the value of the Y coordinate represents the vertical position.

Then, based on the acquired plurality of coordinate information, the CPU 201 generates stroke data (details will be described later) corresponding to characters written on the paper medium 70. At this time, the electronic writing device 2 is connected to a server SV as an external storage device via a network NW by wireless (or wired) communication in this example (see FIG. 1). The stroke data generated by the CPU 201 is transmitted to the server SV and stored.

The display 4 is connected to the electronic writing device 2, and image data corresponding to the appearance of the paper medium 70 placed on the placement unit 24 of the electronic writing device 2 by the operator, or to the paper medium 70 by the operator. The image data (a collection of stroke data) corresponding to the described contents can be displayed.

<Electrical configuration of electronic writing device>
With reference to FIG. 3, the electrical configuration of the electronic writing apparatus 2 will be described. As shown in FIG. 3, the electronic writing apparatus 2 includes a CPU 201 that controls the entire electronic writing apparatus 2, a ROM 202, a RAM 203 that temporarily stores various data, a flash memory 204, a drive circuit 209, 210 and a communication control unit 207 that controls transmission and reception of information with the server SV via the network NW.

The ROM 202, RAM 203, flash memory 204, and drive circuits 209 and 210 are electrically connected to the CPU 201. The ROM 202 includes a program storage area 2021 and an image data storage area 2023. The program storage area 2021 stores various programs (including electronic writing processing programs that execute flows shown in FIGS. 9 to 13 described later) executed by the CPU 201 to control the electronic writing apparatus 2. In the image data storage area 2023, for example, image data corresponding to the format information of the paper medium 70 is stored. The flash memory 204 includes a coordinate information storage area 2041.

The drive circuit 209 is an electronic circuit for driving the touch panel 25. The drive circuit 210 is an electronic circuit for displaying an image on the display 4.

<Generation of stroke data>
Next, stroke data will be described. The stroke data is a pen position data string composed of a plurality of coordinate information acquired by the CPU 201 based on the detection result of the touch panel 25. FIGS. 4A and 4B show examples of two stroke data “a” and “b”.

In FIG. 4A and FIG. 4B, the first stroke data “a” is data representing the trajectory of the one-stroke portion from the beginning to the end of writing of the character “a” by the electronic pen 3, Along the series, 11 pieces of coordinate information (X1, Y1), (X2, Y2),..., (X11, Y11) are used as position information corresponding to the pen position numbers T1, T2,. Including. The second stroke data “b” is data representing the trajectory of the one-stroke portion from the beginning of writing to the end of writing of the character “b” by the electronic pen 3, and the pen position numbers T12, T13 are arranged in time series. ,..., T21 includes 10 pieces of coordinate information (X12, Y12), (X13, Y13),. In this way, the CPU 201 uses a plurality of pieces of coordinate information according to the detection result of the touch panel 25, and stroke data as a coordinate data string corresponding to the content described on the paper medium 70 by the operator using the pen 3. Is generated. Note that an aggregate of a plurality of stroke data generated in this way forms image data of the display 4.

<Features of this embodiment>
In the above basic configuration and operation, the feature of the present embodiment is to prevent erroneous detection of a pressing force by a device other than the pen 3 when detecting a pressed position on the touch panel 25 as described above. Hereinafter, the details will be described in order.

For example, when the operator performs a writing operation on the paper medium 70 placed on the placement unit 24 as described above, the operator's palm, nail, A portion that is not the tip of the pen 3 such as the cuff portion of the operator's clothes or the band of the operator's wristwatch may press the paper medium 70. Even in such a case, since the pressing force is transmitted to the placement unit 24 through the paper medium 70, the pressing force other than the pen 3 can be erroneously detected by the touch panel 25 as being a pressing portion by the pen 3. There is sex.

<Example of false detection 1>
An example in which the above-described erroneous detection occurs will be described with reference to FIGS. 5 (a) to 5 (c). As shown in FIG. 5A, in this example, when the operator performs a writing operation, the operator's nails or wristband comes into contact with the paper medium 70 with respect to the paper medium 70 placed on the placement unit 24. is doing. In this case, as shown in FIG. 5B, the operator uses the pen 3 for the paper medium 70 with the letters R “Iidabashi, Chiyoda-ku, Tokyo,” “Aiueo,” “ABCDEFG,” “012345,” and “Matsuzaki”. It is described. However, as described above, as a result of the operator's nails or wristwatch band pressing the touch panel 25 via the paper medium 70, the stroke data generated by the CPU 201 based on the detection result of the touch panel 25 is shown in FIG. As shown in Fig. 5, scratch marks by nails and scratch marks by the watch band of the dominant arm are included. As a result, the stroke data corresponding to the letter R written on the paper medium 70 becomes unclear.

<Example of false detection # 2>
Other examples in which the erroneous detection occurs are shown in FIGS. 6 (a) to 6 (c). As shown in FIG. 6A, in this example, when the operator performs a writing operation, the operator's nails and the cuffs of clothes are placed on the paper medium 70 with respect to the paper medium 70 placed on the placement unit 24. In contact. In this case, as shown in FIG. 6 (b), the operator uses the pen 3 to write the letter R of “Iidabashi, Chiyoda-ku, Tokyo”, “Aiueo”, “ABCDEFG”, “012345” on the paper medium 70. ing. However, the stroke data generated by the CPU 201 as a result of the nail or cuff pressing the touch panel 25 as described above detects scratch marks by the nail or drag marks by the cuff below as shown in FIG. 6C. Will be. As a result, almost no stroke data corresponding to the letter R written on the paper medium 70 is generated.

<Example 3 of false detection>
Still another example in which the above-described erroneous detection occurs is shown in FIGS. 7 (a) to 7 (c). As shown in FIG. 7A, in this example, the extended little finger of the operator is in contact with the paper medium 70. In this case, as shown in FIG. 7 (b), the operator uses the pen 3 to write the same characters R of “Iidabashi, Chiyoda-ku, Tokyo”, “Aiueo”, “ABCDEFG”, “012345” as described above. However, as a result of the little finger pressing the touch panel 25 as described above, the stroke data generated by the CPU 201 detects a scratch mark by the nail as shown in FIG. As a result, almost no stroke data corresponding to the letter R written on the paper medium 70 is generated.

<Method of avoiding false detection according to this embodiment>
Therefore, in the present embodiment, the erroneous detection is avoided by the following two-stage method.

<Selection by threshold>
First, when the touch panel 25 is pressed, the CPU 201 determines whether or not the magnitude of the pressing force is equal to or greater than a predetermined threshold value. By setting the magnitude of the threshold value to be relatively large and appropriate, a pressing portion having a pressing force smaller than the pressing force generated when writing with the pen 3 such as a pressing force by the palm of the operator is excluded from the processing target. .

<Specification by positional relationship among multiple pressing points>
Next, as described above with reference to FIGS. 5 to 7, when the nail, the cuff, the wristband or the like presses the paper medium 70 at the time of writing by the operator, the CPU 201 And the pressed part by the nail or the like are detected at the same time. Therefore, when there are a plurality of pressed portions having a value equal to or greater than the threshold value as described above, the CPU 201 detects the relative positions thereof. This has the following significance.

That is, generally, when an operator performs writing by holding the pen 3 with his / her hand, as viewed from the operator, the pressing portion of the above-described nails, cuffs, wristband, etc. and the tip of the pen 3 are pressed. A specific relative positional relationship arises between the locations. For example, when the operator's claw or wristwatch band is in contact with the paper medium 70 as shown in FIG. 5A, as shown in the corresponding FIG. The pressing part of the pen 3 is located above the pressing part of the nail and the pressing part of the wristwatch band.

For example, when the operator's nails and cuffs are in contact with the paper medium 70 as shown in FIG. 6A, the pen 3 is viewed from the operator as shown in FIG. 8B. The pressing part is positioned above the pressing part of the nail and the pressing part of the cuff.

Further, for example, when the operator's little finger is in contact with the paper medium 70 as shown in FIG. 7A, as shown in the corresponding FIG. The pressed part is located above the pressed part of the little finger.

Based on the above, in the present embodiment, when the magnitude of the pressing force is equal to or greater than the threshold value and there are a plurality of pressing locations detected at the same time, the CPU 201 is the highest in the entire pressing location as viewed from the operator. One press location determined to be is specified as a press location by the pen 3. Note that “topmost” is defined as the uppermost position when viewed from the operator in all cases of the vertical placement, horizontal placement, vertical writing, horizontal writing, foreign language, etc. of the letter R (FIG. 8A). To (c)). Thereby, CPU201 can exclude from the process object the press location by the said nail | claw other than the pen 3, claw part, a wristband, etc. from a process target, and can specify the press location by the pen 3. FIG. it can.

<Control flow>
A control procedure executed by the CPU 201 of the electronic writing device 2 to realize the above method will be described with reference to FIG. In FIG. 9, this flow is started, for example, when the power of the electronic writing apparatus 2 is turned on.

First, in step S10, the CPU 201 detects the pressing location and the pressing force at each pressing location based on the detection result on the touch panel 25 when the operator performs writing as described above.

Thereafter, the process proceeds to step S20, and the CPU 201 determines whether or not there is a pressing force detected in step S10 that has a pressing force greater than or equal to a predetermined threshold value. If the pressing force of all the pressed points is less than the threshold value, the determination is not satisfied, and the process returns to step S10 and the same procedure is repeated. If the pressing force at any one of the pressing locations is equal to or greater than the threshold value, the determination at step S20 is satisfied, and the routine proceeds to step S30. The step S20 functions as a pressure determination unit described in each claim and corresponds to a pressure determination procedure.

And in step S30, CPU201 extracts the data whose pressing force became more than the said threshold value. Thereafter, the process proceeds to step S40.

In step S40, the CPU 201 determines whether there is a plurality of data extracted in step S30, in other words, a pressed location where the magnitude of the pressing force is greater than or equal to the threshold value among the pressed locations detected in step S10. It is determined whether or not there are multiple.

If there is only one pressing location where the magnitude of the pressing force is equal to or greater than the threshold value, the determination in step S40 is not satisfied, and the routine proceeds to step S70. In this case, the CPU 201 regards the one pressed position as a pressed position by the pen 3 and adds the coordinate information on the touch panel 25 corresponding to the pressed position to the character string data string (new character string data Is generated as the first data of the character string data).

On the other hand, if there are a plurality of pressed locations where the magnitude of the pressing force is equal to or greater than the threshold value in step S40, the determination in step S40 is satisfied, and the flow proceeds to step S50.

In step S50, the CPU 201 determines the relative positional relationship between the plurality of pressing locations where the magnitude of the pressing force is equal to or greater than the threshold (for example, which pressing location is the uppermost portion, which pressing location is the leftmost side or the rightmost side). , Etc.). This step S50 functions as a relative position detection means described in each claim and corresponds to a relative position detection procedure.

After that, in step S60, the CPU 201 identifies the one pressed position determined to be the uppermost position as viewed from the operator in the above step S50 as the pressed position by the pen 3, and extracts the data. In addition, this step S60 functions as a writing press specifying means described in each claim and corresponds to a writing press specifying procedure.

Thereafter, the process proceeds to step S70, where the CPU 201 regards the one pressed location specified in step S60 as a pressed location by the pen 3, and, as described above, coordinate information on the touch panel 25 corresponding to the pressed location. Is added to the character string data string (when new character string data is generated, it is set as the first data of the character string data). The generated stroke data is temporarily stored in the RAM 203.

Thereafter, the process proceeds to step S80, and the CPU 201 determines whether or not the writing by the operator is completed by a known appropriate method. For example, it may be determined using a timer whether or not the position information is not acquired on the touch panel 25 for a predetermined period, or it may be determined whether or not an appropriate writing end button has been operated by the operator. . When the writing by the operator is finished, the determination in step S80 is satisfied, and this flow is finished. While the writing by the operator is not completed, the determination in step S80 is not satisfied, the flow returns to step S10, and the subsequent flow is repeated. In step S70, new character string data generated so far is added at the end. In addition, coordinate information of a position regarded as a place pressed by the pen 3 is added. Thereby, whenever the procedure of step S70 is executed, coordinate information corresponding to the movement of the pen 3 is sequentially added, and thereby stroke data corresponding to the contents of the written character R of the operator is generated. The generated stroke data is temporarily stored in the RAM 203. Note that step S70 functions as a stroke generation means described in each claim and corresponds to a stroke generation procedure.

As described above, in the electronic writing device 2 of the present embodiment, the operator performs a desired writing operation on the paper medium 70 using the pen 3 with the paper medium 70 placed on the placement unit 24. Is performed, the pressing force by the tip of the pen 3 is transmitted to the touch panel 25 of the placement unit 24 through the paper medium 70. Based on the detection result on the touch panel 25, the pressed part and the pressing force at that time are detected by the CPU 201. By continuously acquiring the position information of the pressed location thus detected, the CPU 201 generates stroke data corresponding to the description of the operator on the paper medium 70, and the description content of the operator is electronically stored. Data can be recorded.

At that time, as described above, the data of the pressed portion where the magnitude of the pressing force is equal to or greater than the threshold value is extracted, and when the data of a plurality of pressed portions is extracted, The data of one pressed location determined to be present is identified as a location pressed by the pen 3. Thereby, in this embodiment, it is possible to generate stroke data by reliably using only data of a pressed portion by the pen 3 while excluding a pressed portion by a thing other than the pen 3. As a result, the description content of the operator can be converted into electronic data with high accuracy and recorded.

The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit and technical idea thereof. Hereinafter, such modifications will be described in order. In addition, the same code | symbol is attached | subjected to the part equivalent to the said embodiment, and description is abbreviate | omitted or simplified suitably.

(1) When specifying at the leftmost pressing location etc. In the above embodiment, among the plurality of pressing locations where the pressing force is equal to or greater than the threshold value, the uppermost one is specified as the pressing location of the pen 3. It is not limited to this. That is, when the operator performs a right-handed operation (right-handed), the pressing position by the tip of the pen 3 is usually leftward from the pressing position by a nail, a cuff, a wristband or the like as viewed from the operator. Located in. Therefore, in the present modification, this is utilized, and the leftmost position among the plurality of pressed positions where the pressing force is equal to or greater than the threshold value is specified as the pressed position of the pen 3.

FIG. 10 shows a control procedure executed by the CPU 201 of the electronic writing device 2 of this modification. The flow of FIG. 10 differs from the flow of FIG. 9 of the above embodiment in that step S61 is provided instead of step S60. That is, after the relative positional relationship between the plurality of pressed points is detected in the same step S50 as described above, the process proceeds to the newly provided step S61.

In step S61, the CPU 201 identifies the one pressed position determined to be the leftmost as viewed from the operator in the above step S50 as the pressed position by the pen 3, and extracts the data. This step S61 functions as a writing press specifying means in the present modification and corresponds to a writing press specifying procedure. The procedure other than step S61 is the same as that in FIG.

Also in the present modification, as in the above-described embodiment, it is possible to accurately identify the pressed portion by the pen 3 while reliably excluding the pressed portion other than the pen 3 from the processing target.

Note that the above may be further applied to cope with a case where the operator performs a left-hand operation (left-handed). In this case, in step S61 of FIG. 10, the CPU 201 identifies the one pressed position determined to be the rightmost as viewed from the operator in step S50 as the pressed position by the pen 3, and the data. Extracting is enough. In this case as well, as with the above, the place pressed by the pen 3 can be specified with high accuracy. In applying the flow of FIG. 10 or the flow applied thereto, the operator declares whether the operator is right-handed or left-handed by operating a button (not shown) provided on the electronic writing device 2. You may do it.

Further applying the above, the method of the above embodiment and the method of the above modification are combined, and the uppermost and leftmost (or the uppermost and rightmost) of the plurality of pressing points where the pressing force is equal to or greater than the threshold value. You may specify what is located in the direction) as a press location of the pen 3. FIG. In this case, it is possible to more accurately specify the pressed location by the pen 3 while excluding the pressed location by the parts other than the pen 3 from the processing target.

(2) When the dominant arm is automatically detected by the palm shape In other words, when the pressing force by the palm is acting on the paper medium 70 at the time of writing, the pressing force is more than the pressing force by the tip of the pen 3 due to the shape of the palm. Becomes smaller. In this case, since the palm area is relatively large, the relatively small pressing force is generated at a plurality of locations over a relatively wide range. Therefore, in the present modification, the CPU 201 identifies a plurality of pressed locations having a relatively low pressing force and existing in the proximity range as a group of pressed locations by the palm. Then, when a group of pressed locations corresponding to the palm is specified as described above, it is possible to detect whether the operator is right-handed or left-handed based on the distribution shape.

Furthermore, in this modified example, the location where the pen 3 is pressed is specified based on the detection result of the dominant arm. That is, the distribution shape of the group of pressed locations by the palm is a substantially 7-character shape corresponding to the palm of the right hand for a right-handed operator, and a substantially inverted 7-character shape corresponding to the palm of the left hand for a left-handed operator. Both should have different shapes. This modification utilizes this fact, and determines whether the operator is right-handed or left-handed based on the detection result of the dominant arm based on the distribution shape of the group of pressed locations.

FIG. 11 shows a control procedure executed by the CPU 201 of the electronic writing device 2 of this modification. The flow of FIG. 11 is different from the flow of FIG. 9 of the above embodiment in that steps S21, S22, S23, S24, S25, and S26 are newly provided between steps S20 and S30. That is, instead of step S60, step S62, step S63, and step S64 are provided between step S50 and step S70.

That is, in the same step S20 as described above, when the pressing force at any one of the pressed locations is equal to or greater than the threshold value and the determination is satisfied, the process proceeds to a newly provided step S21.

In step S21, the CPU 201 extracts data in which the pressing force is less than the above-described threshold value (the same as that in step S20) and within a predetermined pressing force range (details are omitted). Thereafter, the process proceeds to step S22.

In step S22, the CPU 201 determines whether or not there is a plurality of data extracted in step S21, in other words, in addition to the pressed location where the magnitude of the pressing force is greater than or equal to the threshold value among the pressed locations detected in step S10. It is determined whether or not there are a plurality of pressing points where the magnitude of the pressing force is less than the threshold value and within a predetermined pressing force range.

If the pressing force is less than the threshold value and has a predetermined pressing force range in only one location, the determination in step S22 is not satisfied, and the routine proceeds to step S30. On the other hand, when there are a plurality of pressing points where the magnitude of the pressing force is less than the threshold value and within the predetermined pressing force range, the determination in step S22 is satisfied, and the process proceeds to step S23.

In step S23, as in step S50 described above, the CPU 201 detects the relative positional relationship between the plurality of pressed points where the magnitude of the pressing force is less than the threshold value and within a predetermined pressing force range. Thereafter, the process proceeds to step S24.

In step S24, the CPU 201 determines that each of the plurality of pressed locations whose relative positional relationship has been detected in step S23 is a predetermined proximity (for example, corresponding to when a normal human palm is pressed against the placement unit 24). Determine if they are distributed within a range. That is, as described above, since the palm area is relatively large, a relatively small pressing force is generated at a plurality of locations over a relatively wide range. Therefore, in step S24, when each of the plurality of pressed locations is not distributed within the predetermined proximity range, the determination in step S24 is not satisfied and the pressed location corresponding to the palm is not considered, and the process proceeds to step S30. Move. On the other hand, if distributed within a predetermined proximity range, the CPU 201 regards the plurality of pressed locations as a group of pressed locations by the palm of the operator, and proceeds to step S25.

In step S25, the CPU 201 specifies the position of the operator's palm based on the presence position of the group of pressed locations in step S24. Thereafter, the process proceeds to step S26. Note that step S25 functions as a palm press specifying means described in each claim and corresponds to a palm press specifying procedure.

In step S26, the CPU 201 detects whether the operator is right-handed or left-handed based on the distribution shape of the group of pressed locations. In other words, as described above, the distribution shape of the group of pressed positions by the palm is approximately 7-shaped corresponding to the palm of the right hand for a right-handed operator, and approximately reverse 7 corresponding to the palm of the left hand for a left-handed operator. It becomes a letter shape. Therefore, the CPU 201 detects the dominant arm of the operator depending on which of these shapes is used. In addition, step S26 functions as an operation arm detection unit described in each claim and corresponds to an operation arm detection procedure. Thereafter, the process proceeds to step S30.

Step S30, and subsequent steps S40 and S50 are the same as described above, and a description thereof will be omitted. If the relative positional relationship between a plurality of pressed locations where the pressing force is equal to or greater than the threshold value is detected in the same step S50 as described above, the process proceeds to a newly provided step S62.

In step S62, the CPU 201 determines whether or not the operator's dominant arm is right-handed based on the detection result in step S26 described above. If it is right-handed, the determination at step S62 is satisfied, and the routine goes to step S63. If it is not right-handed but left-handed, the determination at step S62 is not satisfied, and the routine goes to step S64. If the determination in step S22 is not satisfied, or the determination in step S24 is not satisfied and the process proceeds to step S62 without reducing step S26, the operator moves to the right as described above. Whether it is dominant or left-handed may be reported by a button operation (not shown), and the determination in step S62 may be executed according to the result.

In step S63, as in step S61 of FIG. 10 described above, the CPU 201 identifies the one pressed position determined to be the leftmost as viewed from the operator in step S50 as the pressed position by the pen 3. , Extract the data.

On the other hand, in step S64, the CPU 201 identifies the one pressed position determined to be the rightmost as viewed from the operator in the above step S50 as the pressed position by the pen 3, and extracts the data. In addition, step S63 and step S64 function as a writing press specifying means described in each claim and correspond to a writing press specifying procedure.

When step S63 or step S64 ends, the process proceeds to step S70. Since step S70 and the subsequent step S80 are the same as described above, description thereof will be omitted.

In this modified example configured as described above, for example, the operator's dominant arm is automatically detected even if the operator does not perform a reporting operation such as whether he is right-handed or left-handed beforehand. Since the corresponding processing is performed, the convenience for the operator can be improved.

(3) When data is narrowed down using the palm position, that is, when a group of pressing points corresponding to the palm is detected and a dominant arm is detected, as described above, at least the pressing point by the pen 3 is at least the palm. Should be above the set of pressed locations. Furthermore, if it is right-handed, there should be a further pressing location on the left side and a pressing location with the pen 3 on the left side. If it is left-handed, there should be a further pressing location on the right side and a pressing location with the pen 3 on the right side. It is. In this modification, when detecting the press location by the pen 3, the press location of the pen 3 is specified based on the data of the press location narrowed down beforehand according to the above.

FIG. 12 shows a control procedure executed by the CPU 201 of the electronic writing device 2 of this modification. The flow of FIG. 12 differs from the flow of FIG. 11 in that step S27 is newly provided between step S26 and step S30, and that step S65 and step S66 replace step S63 and step S64, respectively. It is provided.

That is, when the dominant arm is detected from the distribution shape of the group of pressed points corresponding to the palm of the operator in the same step S26 as described above, the process proceeds to a newly provided step S27.

In step S27, the CPU 201 excludes the data of a group of pressing points corresponding to the palm of the operator and the data of the pressing points located below the group of pressing points from the subsequent processing targets. Subsequent Step S30, Step S40, Step S50, and Step S62 are the same as described above, and a description thereof is omitted.

In step S62, if the operator's dominant arm is right-handed and the determination is satisfied, the process moves to step S65. In step S65, the CPU 201 specifies that one pressing point determined to be on the left side of the palm and leftmost as viewed from the operator in step S50 is the pressing point by the pen 3, and the data To extract.

In step S62, if the operator's dominant arm is not right-handed but left-handed and the determination is not satisfied, the process moves to step S66. In step S66, the CPU 201 identifies the one pressed position that is determined to be located on the right side and the rightmost side of the palm as viewed from the operator in step S50 as the pressed position by the pen 3, and the data. To extract. In addition, step S65 and step S66 function as a writing press specifying means described in each claim and correspond to a writing press specifying procedure.

When step S65 or step S66 ends, the process proceeds to step S70. Since step S70 and the subsequent step S80 are the same as described above, description thereof will be omitted.

In this modified example configured as described above, the CPU 201 treats a group of pressing points by the palm specified as described above and pressing points positioned below the operator as viewed from the operator. While excluding, the location to be pressed by the pen 3 is specified. Thereby, the press location by the pen 3 can be specified with high accuracy and quickly, while reliably excluding the press location by the palm.

Further, for example, at the moment when the pen 3 is moving in the inter-character space between the characters during the writing operation of the operator, a pressed position by the pen 3 is not detected, and a group of pressed positions by the palm In addition, a pressed portion by a cuff portion or a wristband or the like located below that is detected. In the present modification, as described above, the blank is moved as described above by excluding the group of pressed points and the pressed points positioned below the operator from the processing target. There is also an effect that it is possible to reliably prevent erroneous detection at the moment, and to specify the pressed portion with the writing instrument with high accuracy.

(4) When the pen pressing position is specified based on the moving speed That is, even when the pressing force other than the pen 3 (nail, cuff, wristband, etc.) is applied to the paper medium 70 at the time of writing. For example, while the pressing portion by the tip of the pen 3 moves finely and finely in small increments according to the stroke, the pressing portion by the nail, the cuff portion, the wristband or the like moves to slide slowly for each character. Therefore, the moving speed of the pressed part by the tip of the pen 3 is often faster than the moving speed of the pressed part by the nail or the like. Therefore, in the present modification, when there are a plurality of pressing locations whose pressing force is greater than or equal to the threshold value, one pressing location with the fastest moving speed is identified as the pressing location with the pen 3.

FIG. 13 shows a control procedure executed by the CPU 201 of the electronic writing device 2 of this modification. The flow of FIG. 13 differs from the flow of FIG. 9 of the above embodiment in that step S67 is provided instead of step S60. That is, after the relative positional relationship between the plurality of pressed points is detected in the same step S50 as described above, the process proceeds to a newly provided step S67.

In step S67, based on the relative positional relationship detected in step S50, the CPU 201 identifies one pressed location where the fastest moving speed is detected as the pressed location by the pen 3, and extracts the data. This step S67 functions as a writing press specifying means in the present modification and corresponds to a writing press specifying procedure. The procedures other than step S67 are the same as those in FIG.

Also in the present modification, as in the above-described embodiment, it is possible to accurately identify the pressed portion by the pen 3 while reliably excluding the pressed portion other than the pen 3 from the processing target.

(5) Others In the above, a known pressure-sensitive means is provided on the mounting portion 24 of the electronic writing apparatus 2 so that the tip of a general-purpose pen 3 such as a normal ballpoint pen presses the paper medium 70 during an operator's writing operation. The movement of the tip of the pen 3 is detected by detecting the force to perform, but is not limited to this. That is, a method of detecting the movement of the tip of the pen 3 during the writing operation of the operator using ultrasonic waves, infrared rays, or camera imaging results may be used.

In addition, in the above, the arrow shown in FIG. 3 shows an example of the signal flow, and does not limit the signal flow direction.

Further, the flowcharts shown in FIGS. 9 to 13 do not limit the present invention to the procedure shown in the above-mentioned flow, and procedures such as addition / deletion or change of order within the scope of the gist and technical idea of the invention. May be.

In addition to those already described above, the methods according to the above-described embodiments and modifications may be used in appropriate combination.

Other than that, although not exemplified one by one, the present invention is implemented with various modifications within a range not departing from the gist thereof.

2 Electronic writing device 3 Pen (writing instrument)
24 Placement unit 25 Touch panel 70 Paper medium (written medium)
201 CPU (calculation means)

Claims (13)

1. A placement unit (24) for placing a writing medium (70) on which an operator's writing operation using the writing instrument (3) is performed;
   Pressure provided on the placement section (24) and for detecting the pressing location where the writing instrument (3) presses the writing medium (70) and the pressing force at the pressing location during the writing operation. Detection means (25);
   Pressure determining means (S20) for determining whether or not the magnitude of the pressing force at the pressing location detected by the pressure detecting means (25) is equal to or greater than a predetermined threshold value;
   A relative position detecting means (S50) for detecting a relative positional relationship between the plurality of pressed locations when there are a plurality of pressed locations detected simultaneously by the pressure detecting means (25);
   When there are a plurality of pressed locations detected simultaneously by the pressure detection means (25), the plurality of these are determined according to the determination result of the pressure determination means (S20) and the detection result of the relative position detection means (S50). A writing press specifying means (S60; S61; S63, S64; S27, S65, S66; S67) for specifying a pressing location by the writing instrument (3) included in the pressing location;
   Stroke corresponding to the description on the writing medium (70) using the position information of the pressed location specified by the writing press specifying means (S60; S61; S63, S64; S27, S65, S66; S67). Stroke data generation means (S70) for generating data;
   An electronic writing apparatus (2) characterized by comprising:
2. The electronic writing device according to claim 1,
   The writing press specifying means (S60)
   When there are a plurality of pressing locations detected simultaneously by the pressure detection means (25), at least one of the pressure determination means (S20) determined that the magnitude of the pressing force is greater than or equal to the threshold value One writing location that is the pressing location and is detected by the relative position detecting means (S50) as being the uppermost position as viewed from the operator among the entire at least one pressed location is the writing instrument. An electronic writing device (2), characterized in that it is a pressed location according to (3).
3. The electronic writing device according to claim 1,
   The writing press specifying means (S61)
   When there are a plurality of pressing locations detected simultaneously by the pressure detection means (25), at least one of the pressure determination means (S20) determined that the magnitude of the pressing force is greater than or equal to the threshold value One pressing location that is the pressing location and is detected by the relative position detecting means (S50) to be the leftmost when viewed from the operator among the at least one pressing location. An electronic writing device (2), characterized in that it is a place pressed by a writing instrument (3).
4. The electronic writing device according to claim 1,
   The writing press specifying means (S61)
   When there are a plurality of pressing locations detected simultaneously by the pressure detection means (25), at least one of the pressure determination means (S20) determined that the magnitude of the pressing force is greater than or equal to the threshold value One pressing location that is the pressing location and that is detected by the relative position detection means (S50) to be the rightmost when viewed from the operator among the entire at least one pressing location, An electronic writing device (2), characterized in that it is a place pressed by a writing instrument (3).
5. The electronic writing device according to claim 1,
   The writing press specifying means (S61)
   When there are a plurality of pressing locations detected simultaneously by the pressure detection means (25), at least one of the pressure determination means (S20) determined that the magnitude of the pressing force is greater than or equal to the threshold value One pressing location that is the pressing location and that is detected by the relative position detecting means (S50) to be the uppermost and leftmost as viewed from the operator among the entire at least one pressing location. The electronic writing device (2), wherein the electronic writing device (2) is specified as a pressed portion by the writing instrument (3).
6. The electronic writing device according to claim 1,
   The writing press specifying means (S61)
   When there are a plurality of pressing locations detected simultaneously by the pressure detection means (25), at least one of the pressure determination means (S20) determined that the magnitude of the pressing force is greater than or equal to the threshold value One pressing location that is the pressing location and that is detected by the relative position detecting means (S50) as being the uppermost and rightmost as viewed from the operator among the at least one pressing location. The electronic writing device (2), wherein the electronic writing device (2) is specified as a pressed portion by the writing instrument (3).
7. The electronic writing apparatus according to any one of claims 3 to 6,
   The magnitude of the pressing force at each of the plurality of pressing points detected simultaneously by the pressure detection means (25) is within a predetermined pressing force range less than the threshold value by the pressure determination means (S20). When it is determined and the relative position detection means (S50) detects that the plurality of pressed locations are within a predetermined proximity range, the plurality of pressed locations are determined by the operator's palm. Palm pressing specifying means (S25) for specifying a group of pressing points;
   Operating arm detection means (S26) for detecting whether the operator is a right hand operation or a left hand operation based on the distribution shape of the group of pressing points specified by the palm pressing specification means (S25);
   Further comprising
   The electronic writing device (2) characterized in that the writing pressure specifying means (S63, S64) specifies a pressing position by the writing tool (3) based on a detection result of the operating arm detecting means (S26).
8. The electronic writing device according to claim 2,
   The magnitude of the pressing force at each of the plurality of pressing points detected simultaneously by the pressure detection means (25) is within a predetermined pressing force range less than the threshold value by the pressure determination means (S20). When it is determined and the relative position detection means (S50) detects that the plurality of pressed locations are within a predetermined proximity range, the plurality of pressed locations are determined by the operator's palm. It further has palm pressing specifying means (S25) for specifying a group of pressing points,
   The writing press specifying means (S27, S65, S66)
   Of the plurality of pressing locations detected simultaneously by the pressure detecting means (25), the group of pressing locations specified by the palm pressing specifying means (S25) and the group of pressing locations as viewed from the operator. An electronic writing device (2) characterized in that a pressing location located by the writing instrument (3) is specified by excluding a pressing location located further downward.
9. The electronic writing device according to claim 8,
   The writing press specifying means (S27, S65)
   Of the plurality of pressing locations detected simultaneously by the pressure detecting means (25), the group of pressing locations specified by the palm pressing specifying means (S25) and the group of pressing locations as viewed from the operator. The writing instrument can be selected from the pressing locations located on the left side of the group of pressing locations as viewed from the operator by the relative position detecting means (S50) while excluding the pressing locations located further downward. An electronic writing device (2) characterized in that the pressed portion is identified by (3).
10. The electronic writing device according to claim 8,
    The writing press specifying means (S27, S66)
    Of the plurality of pressing locations detected simultaneously by the pressure detecting means (25), the group of pressing locations specified by the palm pressing specifying means (S25) and the group of pressing locations as viewed from the operator. The writing instrument can be selected from the pressing locations located on the right side of the group of pressing locations as viewed from the operator by the relative position detecting means (S50) while excluding the pressing locations located further downward. An electronic writing device (2) characterized in that the pressed portion is identified by (3).
11. In the electronic writing device according to claim 9 or 10,
    Operating arm detection means (S26) for detecting whether the operator is a right hand operation or a left hand operation based on the distribution shape of the group of pressed locations specified by the palm pressing specification means (S25).
    Further comprising
    The writing press specifying means (S27, S65, S66) specifies a pressing location by the writing tool (3) based on the detection result of the operating arm detecting means (S26). ).
12. The electronic writing device according to any one of claims 1 to 11,
    The writing press specifying means (S67)
    When there are a plurality of pressing locations detected simultaneously by the pressure detection means (25), at least one of the pressure determination means (S20) determined that the magnitude of the pressing force is greater than or equal to the threshold value One pressing location that is the pressing location and has been detected by the relative position detecting means (S50) to have the fastest moving speed among the entire at least one pressing location is pressed by the writing instrument (3). An electronic writing device (2) characterized by being identified as a location.
13. The placement unit (24) for placing the writing medium (70) on which the writing operation of the operator using the writing instrument (3) is performed and the placement unit (24) are provided, and at the time of the writing operation, Computing means (201) of an electronic writing device comprising: a pressing location where the writing instrument (3) presses the writing medium (70); and a pressure detection means (25) for detecting the pressing force at the pressing location. )
    A pressure determination procedure (S20) for determining whether or not the magnitude of the pressing force at the pressing location detected by the pressure detection means (25) is equal to or greater than a predetermined threshold value;
    A relative position detection procedure (S50) for detecting a relative positional relationship between the plurality of pressed locations when there are a plurality of pressed locations detected simultaneously by the pressure detecting means (25);
    When there are a plurality of pressed locations detected simultaneously by the pressure detection means (25), the plurality of the pressed locations are determined according to the determination result of the pressure determination procedure (S20) and the detection result of the relative position detection procedure (S50). A writing press specifying procedure (S60; S61; S63, S64; S27, S65, S66; S67) for specifying a pressing location by the writing instrument (3) included in the pressing location;
    Stroke corresponding to the description on the writing medium (70) using the position information of the pressed location specified by the writing press specifying procedure (S60; S61; S63, S64; S27, S65, S66; S67). Stroke data generation procedure for generating data (S70);
    An electronic writing processing program characterized in that is executed.

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