JP2005149264A - Identification system and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an identification system that can easily and accurately identify in which entry a symbol or the like entered by a user across a plurality of adjacent entries has been entered. <P>SOLUTION: In the identification system 100, a user enters a symbol in a predetermined entry field on an application form 36 with an electronic pen 10. Entry data on the symbol entered by the user are sent from the electronic pen 10 to an identification server 5 via a user terminal 25. The identification server 5 extracts coordinate data on every stroke from the acquired entry data. From the extracted coordinate data on every stroke, the identification server 5 further extracts coordinate data on one or more sample points forming the stroke. According to the coordinate data on the sample points, the identification server 5 refers to a coordinate table 508 associating entry fields plotted on the application form 36 and position coordinates on a dot pattern to identify in which entry field the stroke has been entered. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a technique capable of accurately acquiring information entered with an electronic pen.

  Conventionally, users have filled in and filled out necessary documents such as applications submitted to government agencies, financial institutions, private companies and others (hereinafter referred to as “various application documents”) using a ballpoint pen. The documents were submitted. On the other hand, in recent years, electronic forms obtained by digitizing forms have been used in place of conventional paper forms. The electronic form is electronic data including a plurality of fields such as paper form entries. A user who creates a form reads an electronic form on a personal computer or the like and displays it on a display device, and inputs necessary items on the electronic form by operating an input device such as a keyboard or a mouse. The input items are acquired as electronic data and can be transmitted to the organization to which the form is submitted through a network or the like.

  However, when preparing various application documents to be submitted to public offices, financial institutions, private companies, etc., for users who do not have enough knowledge about how to operate personal computers, users who are not good at keyboard input, etc. It is often difficult to use the above-mentioned electronic form well. For such users, the method of pen input to a paper form is the easiest, as is conventionally done.

  In recent years, pen-type input devices called “electronic pen”, “digital pen”, and the like have appeared as effective input devices in such cases (hereinafter, referred to as “electronic pen” in this specification). A typical example is the “Anoto pen” developed by Swedish company Anoto. Anotopen is used in a pair with dedicated paper (hereinafter referred to as “dedicated paper”) on which a predetermined dot pattern is printed. In addition to the normal ink-type pen tip, the Anoto pen is equipped with a small camera for reading the dot pattern on the dedicated paper and a data communication unit. When a user writes characters on the special paper with an anotopen or checks an image that is designed on the special paper, the small camera detects the dot pattern on the special paper as the pen moves, and the user Entry data (also referred to as “stroke data”) such as written characters and images is acquired. This entry data is transmitted from the Anotopen to a terminal device such as a nearby personal computer or mobile phone by the data communication unit. The system using this anotopen can be used as an input device in place of the keyboard, and is very easy to use for users who are reluctant to use the personal computer and keyboard described above. On the other hand, even at the submission site of various application documents such as government offices, user entries can be obtained as entry data rather than as paper documents as before, so electronic processing is then performed directly by the server etc. There is a merit that it can be done.

  Normally, various application documents are provided with items for the user to enter letters and numbers as entry items. In order to convert the data entered by the user into data using an electronic pen or the like, it is necessary to correctly identify which item the text is written on. However, the items of various application documents are often arranged adjacent to each other in the vertical and horizontal directions, and the user sometimes enters characters or the like outside the items to be originally entered. In this case, a server such as a government office that handles entry data misrecognizes which item the character entered by the user is for, and the character entered for the item contrary to the user's intention. As a result, there was a problem of processing.

  The present invention has been made in view of the above points, and it is possible to easily and accurately identify for which item a stroke written across adjacent items is written. It is an object to provide an identification system.

  In one aspect of the present invention, in an identification system using an electronic pen form on which a dot pattern recognizable by an electronic pen is printed, the electronic pen form includes a plurality of entries entered by the electronic pen using the electronic pen. It is composed of an entry field, and a dot pattern corresponding to the information in the entry field is printed, and the identification system includes an area set in the entry field, a position coordinate on the dot pattern, Coordinate information acquisition means for acquiring information associated with each other as coordinate information, entry data acquisition means for acquiring entry data entered in the electronic pen form, and from the entry data, the writer enters the electronic pen. From the stroke extraction means for extracting the coordinate data relating to the stroke entered in one operation using the coordinate data relating to the stroke, Sample point extraction means for extracting coordinate data of one or more sample points constituting the stroke, and identification means for identifying an entry field in which the stroke is written based on the coordinate data of the sample point and the coordinate information And comprising.

  In the identification system configured as described above, the entry person first fills in a predetermined entry field of the electronic pen form using the electronic pen. In the identification system, the electronic pen reads the dot pattern on the form as the electronic pen moves, and acquires entry data regarding the symbols entered by the writer. Here, the symbol is a broad concept including letters and numbers. The entry data includes position coordinates on the dot pattern. The entry data acquired by the electronic pen is acquired by the identification system. The identification system extracts coordinate data for each stroke from the acquired entry data. Furthermore, the identification system extracts coordinate data of one or more sample points constituting the stroke from the extracted coordinate data for each stroke. Then, the identification system refers to the coordinate information in which the area set in the entry field on the form and the position coordinate on the dot pattern are associated with each other based on the coordinate data of the sample points, thereby determining which stroke is entered. Identifies what was entered for the column.

  According to this, even when a stroke is entered across a plurality of entry fields, the identification system can easily and accurately identify the entry field intended by the entry person. Therefore, it is possible to reduce the burden on the writer who fills in correctly.

  In one aspect of the identification system, the identification system calculates the number of sample points included in each entry field constituting the electronic pen form based on the coordinate data of the sample points and the coordinate information. Means for identifying the entry field containing the most sample points as the entry field in which the stroke is entered. According to this, the identification system calculates how many sample points constituting the stroke are included in each entry field on the form by referring to the coordinate information based on the coordinate data of the sample points. Then, the identification system identifies the entry field including the most sample points constituting the stroke as the entry field in which the stroke is entered according to the intention of the writer. That is, the entry field intended by the user can be easily identified by the number of sample points constituting the stroke.

  In another aspect of the present invention, in an identification system using an electronic pen form on which a dot pattern recognizable by an electronic pen is printed, the electronic pen form includes a plurality of entries entered by the electronic pen using the electronic pen. It is composed of an entry field, and a dot pattern corresponding to the information in the entry field is printed, and the identification system includes an area set in the entry field, a position coordinate on the dot pattern, Coordinate information acquisition means for acquiring information associated with each other as coordinate information, entry data acquisition means for acquiring entry data entered in the electronic pen form, and from the entry data, the writer enters the electronic pen. A stroke extracting means for extracting coordinate data related to the stroke entered in one operation using the, and the coordinate data related to the stroke. Sample point extracting means for extracting coordinate data of one or more sample points constituting the stroke, and stroke part coordinates defining a stroke part which is an area set by the stroke based on the coordinate data of the sample point Stroke part coordinate calculating means for calculating; entry part coordinate extracting means for extracting entry part coordinates for defining an entry part that is an area set by the entry field; and the stroke part coordinates and the entry part. Based on the coordinates, an overlapping area calculating means for calculating an area of the overlapping portion, which is a region where the stroke portion and the writing portion overlap, and an identification for identifying the entry column in which the stroke is written based on the overlapping area Means.

  In the identification system configured as described above, the entry person first fills in a predetermined entry field of the electronic pen form using the electronic pen. In the identification system, the electronic pen reads the dot pattern on the form as the electronic pen moves, and acquires entry data regarding the symbols entered by the writer. Here, the symbol is a broad concept including letters and numbers. The entry data includes position coordinates on the dot pattern. The entry data acquired by the electronic pen is acquired by the identification system. The identification system extracts coordinate data for each stroke from the acquired entry data. Furthermore, the identification system extracts coordinate data of one or more sample points constituting the stroke from the extracted coordinate data for each stroke.

  Next, the identification system calculates the stroke part coordinates that define the stroke part set by the stroke based on the coordinate data of the sample points. Further, the identification system extracts, from the coordinate information, entry part coordinates that define the entry part set by the entry field on the form. Furthermore, the identification system calculates the area of the overlapping portion, which is a region where the stroke portion and the writing portion overlap, based on the stroke portion coordinates and the writing portion coordinates. Then, the identification system identifies to which entry column the stroke is entered based on the calculated area of the overlapping portion.

  According to this, even if the sample points for the stroke cannot be uniformly extracted due to the specifications of the electronic pen, and the stroke is written across a plurality of entry fields, the identification system is easy and It is possible to accurately identify the entry field intended by the entrant.

  In an aspect of the identification system, the identification unit identifies the entry field corresponding to the entry part having the largest overlap area as the entry field in which the stroke is entered. According to this, the identification system identifies the entry field having the largest overlapping area as the entry field in which the stroke is entered by the intention of the entry person. That is, the entry field intended by the entry person can be easily identified by the area of the overlapping portion calculated based on the stroke part corresponding to the predetermined stroke and the entry part corresponding to the predetermined entry field.

  In another aspect of the present invention, in an identification system using an electronic pen form on which a dot pattern recognizable by an electronic pen is printed, the electronic pen form includes a plurality of entries entered by the electronic pen using the electronic pen. It is composed of an entry field, and a dot pattern corresponding to the information in the entry field is printed, and the identification system includes an area set in the entry field, a position coordinate on the dot pattern, Coordinate information acquisition means for acquiring information associated with each other as coordinate information, entry data acquisition means for acquiring entry data entered in the electronic pen form, and from the entry data, the writer enters the electronic pen. A stroke extracting means for extracting coordinate data related to the stroke entered in one operation using the, and the coordinate data related to the stroke. Sample point extraction means for extracting coordinate data of one or more sample points constituting a stroke, determination means for determining whether or not the sample points are extracted evenly with respect to the stroke, and Based on the coordinate data and the coordinate information, a first identification means for identifying an entry field in which the stroke is entered, and a stroke portion which is an area set by the stroke based on the coordinate data of the sample point are defined. Stroke part coordinate calculating means for calculating stroke part coordinates to be performed; entry part coordinate extracting means for extracting, from the coordinate information, entry part coordinates for defining an entry part that is an area set by the entry field; and the stroke part Based on the coordinates and the entry part coordinates, the area of the overlapping part, which is an area where the stroke part and the entry part overlap, is calculated. An overlapping area calculating means; and a second identifying means for identifying an entry field in which the stroke is entered based on the overlapping area, wherein the determining means extracts the sample points equally to the stroke. When it is determined that the entry field in which the stroke is entered is identified by the first identification means, and when the determination means determines that the sample points are not evenly extracted with respect to the stroke The entry field in which the stroke is entered is identified by the second identification means.

  In the identification system configured as described above, the entry person first fills in a predetermined entry field of the electronic pen form using the electronic pen. In the identification system, the electronic pen reads the dot pattern on the form as the electronic pen moves, and acquires entry data regarding the symbols entered by the writer. The entry data includes position coordinates on the dot pattern. The entry data acquired by the electronic pen is acquired by the identification system. The identification system extracts coordinate data for each stroke from the acquired entry data. Furthermore, the identification system extracts coordinate data of one or more sample points constituting the stroke from the extracted coordinate data for each stroke. Then, the identification system refers to the coordinate information in which the area set in the entry field on the form and the position coordinate on the dot pattern are associated with each other based on the coordinate data of the sample points, thereby determining which stroke is entered. Identifies what was entered for the column. This is the first identification process.

  Furthermore, the identification system calculates the stroke part coordinates that define the stroke part set by the stroke based on the coordinate data of the sample points. Further, the identification system extracts, from the coordinate information, entry part coordinates that define the entry part set by the entry field on the form. Then, the identification system calculates the area of the overlapping portion, which is the region where the stroke portion and the writing portion overlap, based on the stroke portion coordinates and the writing portion coordinates, and based on the area of the overlapping portion, which entry field the stroke is in It is identified whether it is what was filled in against. This is the second identification process.

  The identification system determines whether or not the sample points for the stroke can be extracted uniformly. If the sample points can be extracted uniformly, the identification system performs a first identification process that can be performed quickly with a small processing load. On the other hand, if the extraction cannot be performed uniformly, a second identification process is performed that allows identification regardless of the number of sample points. Thus, the identification system can reduce the load and perform the processing efficiently by identifying the entry field intended by the writer by combining the first identification processing and the second identification processing.

  According to still another aspect of the present invention, there is provided a program executed by a computer using an electronic pen form on which a dot pattern recognizable by an electronic pen is printed. It is composed of a plurality of entry fields to be filled in with a pen, and a dot pattern corresponding to the information in the entry field is printed, and the program includes an area set in the entry field, and the dot pattern Coordinate information acquisition means for acquiring information associated with the upper position coordinates as coordinate information, entry data acquisition means for acquiring entry data entered in the electronic pen form, and from the entry data, the writer Stroke extracting means for extracting coordinate data relating to a stroke entered in one operation using the electronic pen; Sample point extracting means for extracting coordinate data of one or more sample points constituting the stroke from the coordinate data, and a column for entering the stroke based on the coordinate data of the sample point and the coordinate information. The computer is caused to function as identification means for identifying.

  By executing the above program by a computer, the above-described identification system can be realized. Moreover, each aspect of the above-described identification system can be similarly realized.

  According to the present invention, it is possible to easily and accurately identify for which item a stroke written across adjacent items is written.

  Preferred embodiments of the present invention will be described below with reference to the drawings. First, an outline of an electronic pen used as an input device in the system of the present invention will be described.

[Electronic pen]
FIG. 1 is a diagram schematically showing how the electronic pen is used, and FIG. 2 is a functional block diagram showing the structure of the electronic pen. As shown in FIG. 1, the electronic pen 10 is used in combination with a dedicated paper 20 on which a dot pattern is printed. The electronic pen 10 includes a pen tip portion 17 similar to a normal ink pen, and a user writes characters on the dedicated paper 20 in the same manner as a normal ink pen.

  As shown in FIG. 2, the electronic pen 10 includes a processor 11, a memory 12, a data communication unit 13, a battery 14, an LED 15, a camera 16, and a pressure sensor 18 therein. The electronic pen 10 includes an ink cartridge (not shown) as a component similar to a normal ink pen.

  The electronic pen 10 does not convert the locus of the ink drawn on the dedicated paper 20 by the pen tip unit 17, but converts the locus coordinates of the movement of the electronic pen 10 on the dedicated paper 20 into data. While the LED 15 illuminates the vicinity of the pen tip 17 on the dedicated paper 20, the camera 16 reads the dot pattern printed on the dedicated paper 20 and converts it into data. That is, the electronic pen 10 can acquire a stroke generated when the user moves the electronic pen 10 on the dedicated paper 20 as image data or vector data.

  The pressure sensor 18 detects the pressure applied to the pen tip portion 17 when the user writes characters on the dedicated paper with the electronic pen 10, that is, the writing pressure, and supplies the detected pressure to the processor 11. The processor 11 switches the LED 15 and the camera 16 on and off based on the writing pressure data given from the pressure sensor 18. That is, when the user writes characters or the like on the dedicated paper 20 with the electronic pen 10, writing pressure is applied to the pen tip portion 17. Therefore, when the writing pressure exceeding the predetermined value is detected, it is determined that the user has started the description, and the LED 15 and the camera 16 are operated.

  The camera 16 reads the dot pattern on the dedicated paper 20 and supplies the pattern data to the processor 11. The processor 11 calculates X / Y coordinates on the dedicated paper 20 from the supplied dot pattern.

  The processor 11 acquires the writing pressure array data and the X / Y coordinate data while the description of the user is performed, and stores them in the memory 12 in association with the time stamp (time information). Therefore, data corresponding to the description content of the user is stored in the memory 12 in time series. The capacity of the memory 12 can be about 1 Mbyte, for example.

  All the acquired data is held in the memory 12 until a transmission instruction is given by the user. When the user issues a transmission instruction, the data communication unit 13 transmits the data in the memory 12 to the terminal device 25 within a predetermined distance from the electronic pen 10. Basically, once a transmission instruction is given, the electronic pen 10 transmits all the data stored in the memory 12 to the terminal device 25, so that the memory 12 is cleared. Therefore, when it is desired to transmit the same information to the terminal device 25 again after transmission, the user needs to write the description on the dedicated paper 20 again. In this case, the user only has to trace characters written on the dedicated paper 20 with an ink pen.

  The electronic pen 10 itself does not include a function button such as a transmission button, and a transmission instruction and other instructions are performed by a user checking the dedicated box provided at a predetermined position on the dedicated paper 20 with the electronic pen 10. Executed. A transmission instruction is associated with the position coordinates of the dedicated box in advance. When the processor 11 receives the position coordinates of the dedicated box, the processor 11 supplies data in the memory 12 to the data communication unit 13 and transmits the data to the terminal device 25. To do. The electronic pen 10 can indicate completion of data transmission by vibration of the electronic pen.

  The battery 14 is for supplying power to each element in the electronic pen 10, and the electronic pen 10 itself can be turned on / off by a cap (not shown) of the electronic pen, for example.

  As described above, the electronic pen 10 has a function of acquiring coordinate data and writing pressure data corresponding to characters and the like described on the dedicated paper 20 by the user and transmitting them to the nearby terminal device 25. Since the pen tip portion 17 is a normal ink pen, the content described on the dedicated paper 20 remains as an original original. That is, at the same time as describing the original paper, its contents can be digitized in the form of coordinate data in real time.

  According to the standard function of the electronic pen 10, data obtained by the electronic pen 10 is in principle in the form of coordinate data or vector data, and is not text data. However, as a standard function, the electronic pen 10 has a function of converting text into alphanumeric characters by describing it in a dedicated area provided on the dedicated paper 20.

  Also, the electronic pen 10 can hold property information (pen information and pen owner information) regarding the pen itself and its owner, and can be referred to from an application. As the pen information, a battery level, a pen ID, a pen manufacturer number, a pen software version, a subscription provider ID, and the like can be held. The pen owner information can hold nationality, language, time zone, email address, free memory capacity, name, address, fax / phone number, mobile phone number, and the like.

  In the data communication unit 13 in the above example, the electronic pen 10 is connected to the terminal device 25 by various methods such as Bluetooth (registered trademark) wireless transmission, wired transmission using a USB cable, and data transmission by contact with a terminal. It is conceivable to perform data transmission.

  Next, a method for acquiring X / Y coordinate data of contents described by the user with the electronic pen will be described. As described above, a predetermined dot pattern is printed on the dedicated paper 20. The camera 16 of the electronic pen 10 does not read the locus of ink described on the dedicated paper 20 by the user, but reads the dot pattern on the dedicated paper 20. Actually, as shown in FIG. 1, the illumination area by the LED 15 and the shooting area of the camera 16 (located in the illumination area) are deviated from the position where the pen tip portion 17 contacts the dedicated paper 20.

  The dot pattern is printed with a special ink containing carbon, and the camera 16 can recognize only the pattern with the special ink. Even if ruled lines or frames are printed on dedicated paper with inks other than dedicated ink (not including carbon), the electronic pen does not recognize them. Therefore, when creating forms such as various application forms using dedicated paper, input frames, ruled lines, cautions, etc. are printed with ink other than dedicated ink.

  In the dot pattern, as illustrated in FIG. 3, the position of each dot is associated with data. In the example of FIG. 3, the 2-bit information of 0 to 3 is displayed by shifting the dot position vertically and horizontally from the reference position (intersection of vertical and horizontal lines) of the grid. The position coordinates on the dedicated paper are determined by the combination of information expressed in this way. As illustrated in FIG. 4A, 36 dots are arranged in a grid within a range of 2 mm in length and width, and the data array (FIG. 4B) indicated by these dots is displayed on the dedicated paper. Are associated with the position coordinates. Therefore, when the camera 16 of the electronic pen 10 captures a dot pattern as shown in FIG. 4A, the processor 11 changes the data array shown in FIG. 4B based on the dot pattern data input from the camera 16. The position coordinates on the dedicated paper (that is, where the dot pattern is located on the dedicated paper) corresponding to the acquired position are calculated in real time. The minimum unit for recognizing the dot pattern is 2 mm × 2 mm, and the camera 16 takes about 100 shots per second.

  Next, the dedicated paper will be described. An example of the structure of the dedicated paper is shown in FIG. As shown in the figure, the dedicated paper 20 has a dot pattern 32 printed on a mount 30 and a design 34 such as a ruled line printed thereon. The mount 30 is usually paper, and the dot pattern 32 is printed with dedicated ink containing carbon as described above. Further, the design 34 is printed with normal ink or the like. The dot pattern and the design may be printed at the same time, or one of them may be printed first.

  An example of the design 34 is shown in FIG. FIG. 6 shows an example of a certain application form 36 in which a plurality of entry fields 38 and a transmission box 39 are printed. Although it is not clearly shown in FIG. 6 and will be described in detail later, a dot pattern is actually printed on the entire surface of the application form 36, and an entry box 38 and a transmission box 39 are formed on the entire surface using ordinary ink. It is printed. The user can enter the necessary items in each entry field 38 of the application form 36 using the electronic pen 10 in the same manner as a conventional application form without being aware of the dot pattern.

  The area on the dedicated paper 20 can be roughly divided into two types. One is an entry area, in which the content described by the electronic pen 10 is handled as information as it is. In the example of FIG. 6, a plurality of entry fields 38 correspond to this. The other is a functional element, and when the corresponding area is checked with the electronic pen 10, actions, instructions, etc. defined in advance for the area are executed. The transmission box 39 in the example of FIG. 6 corresponds to this.

  The transmission box 39 is used when giving an instruction to transmit data stored in the electronic pen 10 to the nearby terminal device 25 as described above. When the user checks the transmission box 39 with the electronic pen 10, the electronic pen 10 reads the dot pattern in the transmission box. The pattern is associated with a transmission instruction, and the processor 11 in the electronic pen 10 issues a command to transmit data stored in the memory 12 to the data communication unit 13.

  The assignment of dot patterns is usually performed for each application (paper type). In other words, the dot patterns in a certain application form do not overlap in one sheet, but the same dot pattern is printed on the same application form. Therefore, when the user inputs necessary items with the electronic pen 10, it can be specified from the coordinate data on the application form which item of the application form the input item is for.

  As described above, by printing a predetermined design on the dedicated paper on which the dot pattern is printed, various application forms using the dedicated paper can be created. If the user uses the electronic pen 10 and fills in necessary items in a normal manner, the electronic data is automatically acquired.

  In the above example, the dot pattern is printed on the dedicated paper with carbon-containing ink. However, the dot pattern can be printed on ordinary paper using a printer and carbon-containing ink. Furthermore, the design on the dedicated paper can also be formed by a printer instead of printing. When dot patterns are formed on paper by a printer, different dot patterns can be formed on each sheet. Therefore, it is possible to identify and distinguish each of these sheets by the difference in the formed dot patterns.

  In the present specification, the term “printing” has a concept including not only normal printing but also printing by a printer.

  Next, transmission processing of data acquired by the electronic pen will be described with reference to FIG. The data acquired by the electronic pen 10 is mainly data of items input by the user, but usually does not include information on where the service server that is the transmission destination of the data is. Instead, information specifying the application or service related to the dedicated paper is included in the dot pattern on the dedicated paper, and the information is acquired from the dedicated paper during the user's input operation. Therefore, the terminal device 25 that has received the entry data from the electronic pen 10 first makes an inquiry to the inquiry server 26 to which service server 27 the data input to the dedicated paper should be transmitted. The inquiry server 26 has information on a corresponding service server for each dedicated paper, and in response to an inquiry from the terminal device 25, information (such as a URL) of the service server 27 that performs a service related to the dedicated paper. Reply to the terminal device 25. Then, the terminal device 25 transmits the entry data acquired from the electronic pen to the service server 27.

  In the above example, the terminal device 25, the inquiry server 26, and the service server 27 are separately configured. However, some or all of them may be configured as one device. In the present embodiment, it is assumed that the identification server described later also serves as the inquiry server 26 and the service server 27.

[Identification system]
Next, the identification system of the present invention will be described. FIG. 7 shows a schematic configuration of the identification system 100. The identification system 100 shown in FIG. 7 identifies whether a user has input a stroke in a predetermined entry field using the electronic pen 10 and acquires accurate information. Here, the stroke is a line segment that is entered by the user in one operation using the electronic pen.

  As shown in FIG. 7, the identification system 100 is configured by connecting the terminal device 25 and the identification server 5 through the network 2. Here, one suitable example of the network 2 is the Internet. The terminal device 25 is a terminal that can exchange data via the network 2 such as a personal computer (hereinafter referred to as “PC”) or a mobile phone used by a user. The identification server 5 is connected to a user database (hereinafter referred to as “DB”) 6.

  First, the outline of the stroke identification method by this system is described. The application form 36 is created as the above-mentioned dedicated paper as shown in FIG. 6, and a plurality of entry fields are arranged. The user enters a predetermined symbol in the application form 36 using the electronic pen 10. Here, the symbol is a broad concept including numbers and letters. The electronic pen 10 acquires the stroke data corresponding to the entered symbol, temporarily stores it in the memory 12 in the electronic pen 10, and then transmits the stroke data to the terminal device 25. The terminal device 25 receives the stroke data from the electronic pen 10 and transmits it to the identification server 5 through the network 2. The identification server 5 is a server that performs stroke identification processing, symbol identification processing, and the like. When the identification server 5 receives the stroke data from the terminal device 25, the identification server 5 identifies, based on the stroke data, in which entry column provided on the application form 36 the stroke entered by the user is entered. The symbol represented by the stroke is also identified.

  Next, each component will be described individually. First, the application form 36 will be described. In the system of the present invention, the application form 36 as shown in FIG. 6 is created as the above-described dedicated paper. That is, as illustrated in FIG. 5, a predetermined dot pattern 32 is printed on the mount 30, and predetermined characters and entry fields are printed thereon. As described above, the dot pattern 32 is printed with ink containing carbon so that the electronic pen 10 can recognize it. On the other hand, since the design 34 such as characters and entry fields is printed with normal (not including carbon) ink, the electronic pen 10 does not recognize it.

  FIG. 8A shows an example in which the number “2” is entered across the two entry fields 54 and 55 provided in the application form 36. FIG. 8B is a diagram showing the positional relationship on the coordinate system of the entry part, the stroke part, and the overlapping part in FIG. The area corresponding to each entry field provided in the application form 36 is defined based on the position coordinates on the preset dot pattern. That is, it is defined by the position coordinates (XY coordinates) of the application form 36. In this embodiment, as shown in FIG. 8 (a), each entry field is assumed to be a square, and the entry field includes three points, the upper left vertex A1, the upper right vertex A2, and the lower left vertex A3. It shall be specified by the position coordinates. Although details will be described later, coordinate data defining each entry field is stored in advance in a coordinate table.

  When the user uses the electronic pen 10 to fill in the application form 36, the electronic pen 10 generates data indicating which coordinates of the application form 36 have been written based on the dot pattern, and the internal memory 12 to store. Therefore, as shown in FIG. 8A, when the user enters, for example, the number “2” in the entry field 54 in the application form 36, the electronic pen 10 acquires the entry position coordinates on the application form 36, Store in memory 12. Then, when the user enters a check mark in the transmission box provided on the application form 36, the entry position coordinates stored in the memory 12 are transmitted from the electronic pen 10 to the terminal device 25 as entry data. That is, entry data including information that the number “2” has been entered in the entry field 54 on the application form 36 is transmitted to the identification server 5.

  Since the entry by the user is performed freehand using the electronic pen 10, the number “2” does not fit in the entry field 54 as shown in FIG. It should be taken into consideration that there may be a case where it falls on another adjacent entry field 55. Usually, since a plurality of entry fields are provided adjacent to each other on the application form 36, a symbol entered by the user in a certain entry field may straddle the adjacent entry fields. This problem can be solved if the user is required to fill in the symbol so that it fits in the entry field. However, since the user actually fills in many application forms 36 in a short time, It is difficult to quickly and accurately enter symbols in small fields.

  Therefore, in the present embodiment, the identification server 5 that has acquired the entry data from the electronic pen 10 calculates which entry field contains the stroke based on the position coordinates of the strokes and entry fields constituting the symbol. By doing so, the stroke is accurately identified and processed as having been entered in the entry field intended by the user.

  In addition, when the symbols of 1 stroke and 2 strokes are mixed in the symbol, it is necessary to determine which stroke is composed of one symbol. Are all composed of one-stroke symbols.

  Here, based on the stroke and the position coordinates of the entry field, calculate which entry field contains the stroke, and identify the entry field for the stroke. The method of performing will be described in detail.

  Specifically, as shown in FIG. 8A, the user tried to enter the number “2” in the entry field 54 out of the two adjacent entry fields 54 and 55. Explain the case where the data is overwritten. Here, the number “2” is vector data, and is expressed as a set of eight sample points 50 as shown in the figure.

  As a first method for identifying which entry field the stroke is entered in, the number of sample points included in each entry field is calculated, and a given stroke contains the most sample points. A method of identifying that the information is entered in the entry field is conceivable. Specifically, in FIG. 8A, four sample points constituting the stroke are included in the entry column 54 and one point in the entry column 55. Therefore, the identification server 5 identifies the stroke, that is, the number “2” as a symbol entered in the entry field 54.

  However, depending on the specifications of the electronic pen, it may be possible that the sample points for the stroke are not necessarily extracted equally. Specifically, a specification for extracting only the coordinates of the minimum sample points necessary for recognizing the stroke can be considered. In this case, when the stroke is a straight line and there is no significant change in the entry movement, only the two coordinates of the entry start point and entry end point are extracted as sample points. For this reason, there is a problem that the number of sample points is too small to identify the entry field in which the stroke is entered by the first method.

  As a second method for resolving the above-mentioned problem and identifying which entry field the stroke is entered in, an area defined by a frame surrounding the stroke (hereinafter referred to as “stroke part”). ) And an area defined in the entry field (hereinafter referred to as “entry part”) are calculated, and a predetermined stroke overlaps. A method is conceivable in which it is identified that the entry is made in an entry column with a large area.

  Specifically, in FIG. 8A, an area where the stroke portion 51 of the numeral “2” overlaps with the entry portion of the entry field 54 is an overlap portion 52 indicated by a left oblique line. An area where the stroke part 51 and the entry part of the entry field 55 overlap is an overlap part 53 indicated by a right oblique line.

  FIG. 8B is a diagram schematically showing the relationship between the entry part, the stroke part, and the overlapping part in FIG. 8A and the position coordinates on the coordinate system defining the respective regions. In FIG. 8B, the entry section is defined by three points, the upper left vertex A1, the upper right vertex A2, and the lower left vertex A3, as in the entry field described above. The stroke portion is defined by the position coordinates of three points of the upper left vertex B1, the upper right vertex B2, and the lower left vertex B3 of the square. In addition, the overlapping portion is defined by the position coordinates of three points of the upper left vertex T1, the upper right vertex T2, and the lower left vertex T3 of the square.

  Here, as shown in FIG. 8B, the coordinates A1 to A3 defining the entry part of the entry field 54 are black circles, the coordinates B1 to B3 defining the stroke part 51 are triangular, and the coordinates T1 defining the overlapping part 52 Thru | or T3 are represented by a white circle. Note that the position coordinates defining each area in the application form 36 are not limited to those taking a positive value, and may take a negative value.

  In the second method, the identification server 5 first obtains coordinates B1 to B3 that define the stroke portion 51. The coordinates B1 to B3 can be calculated from the maximum value and the minimum value of the sample points constituting the stroke. Specifically, the coordinate B1 can be defined by the minimum value on the X axis and the minimum value on the Y axis of the sample points, and is set to (x1, y1) for convenience. The coordinate B2 can be defined by the maximum value on the X-axis and the minimum value on the Y-axis of the sample point, and is (x2, y2) for convenience. The coordinate B3 can be defined by the minimum value on the X-axis and the maximum value on the Y-axis of the sample point, and is (x3, y3) for convenience. The coordinates A1 to A3 that define the entry section 54 are preset, and can be extracted from a coordinate table to be described later. For convenience, the coordinate A1 is (X1, Y1), the coordinate A2 is (X2, Y2), and the coordinate A3 is (X3, Y3).

  Next, the identification server 5 obtains the area of the overlapping part 52. For convenience, it is assumed that the coordinates T1 that define the overlapping portion are (p1, q1), the coordinates T2 are (p2, q2), and the coordinates T3 are (p3, q3). The area of the overlapping part 52 can be calculated from coordinates B1 to B3 that define the stroke part 51 and coordinates A1 to A3 that define the entry part 54. Specifically, the area N of the overlapping portion 52 can be calculated by the following formula 1 using coordinates as shown in FIG. In Equation 1, min (A, B) means the smaller one of A and B, and max (A, B) means the larger one of A and B.

<Formula 1>
N = (p2-p1) × (q3-q1)
= (Min (x2, X2) -max (x1, X1))
× (min (y3, Y3) −max (y1, Y1))
The identification server 5 calculates the area of the overlapping portion with respect to the predetermined stroke for each entry field based on Equation 1, so that the predetermined stroke is entered in the entry field with the largest area of the overlapping portion. Identify it.

  In this embodiment, an example is described in which a one-stroke number “2” is applied as a symbol to be entered by the user. However, the present invention is not limited to this, and other one-stroke numbers are used. It is also possible to apply the number “3” or the symbol “triangle (Δ)” that can be entered.

  Next, the identification server 5 will be described in detail. FIG. 9 shows an internal configuration of the identification system 100, particularly the identification server 5. As illustrated, the identification server 5 includes an identification program 501, a data acquisition function 502, a stroke extraction function 503, a sample point extraction function 504, a stroke part coordinate calculation function 505, an entry part coordinate extraction function 506, and an overlapping part area calculation function 507. , A coordinate table 508, an overlapping area storage unit 509, a stroke identification function 510, a symbol identification function 511, a symbol table 512, and an information storage function 513. In addition, each function is implement | achieved when the CPU which the identification server 5 has runs the program prepared beforehand.

  Based on the data acquired from the electronic pen 10 via the terminal device 25 and the coordinate table 508, the identification program 501 identifies and identifies which entry field the predetermined stroke is entered in. This is a program for storing information related to the entry field in the user DB 6.

  The data acquisition function 502 is a function for acquiring entry data entered in the application form 36 by the user using the electronic pen 10 by executing the identification program 501.

  The stroke extraction function 503 is a function for extracting coordinate data for each stroke entered by the user with a single operation, that is, one stroke using the electronic pen 10 by executing the identification program 501 from the entry data.

  The sample point extraction function 504 is a function for extracting coordinate data of sample points constituting the stroke extracted by the stroke extraction function 503.

  The stroke part coordinate calculation function 505 is a function for calculating coordinates B1 to B3 defining the stroke part based on the coordinate data of the sample points extracted by the sample point extraction function 504.

  The entry part coordinate extraction function 506 is a function for extracting coordinates A1 to A3 defining the entry part from the coordinate table 508. Here, the coordinate table 508 will be described with reference to FIG. The coordinate table 508 stores coordinate data composed of A1 to A3 using the entry column ID as a key. The entry field ID is information for identifying each entry field provided in the application form 36, and the coordinate data is a position coordinate on the application form 36 indicating the arrangement of the entry field indicated by each entry field ID. Specifically, A1 is the vertex coordinate at the upper left of the entry column, A2 is the vertex coordinate at the upper right of the entry column, and A3 is the vertex coordinate at the lower right of the entry column. Specifically, when the entry field ID indicating the specific entry field for performing the identification process is “K001”, the entry part coordinate extraction function 506 uses the coordinates A1 (1, 1), coordinates as the entry part coordinates from the coordinate table 508. A2 (7, 1) and coordinates A3 (1, 5) are extracted. In this embodiment, it is assumed that there are ten entry fields provided on the application form 36, and “K001 to K010” is set as the entry field ID of each entry field.

  The overlap part area calculation function 507 is based on the coordinates B1 to B3 calculated by the stroke part coordinate calculation function 505 and the coordinates A1 to A3 extracted by the entry part coordinate extraction function 506 according to Equation 1 in a predetermined entry field. This is a function for calculating the area of the overlapping portion. The overlapping area calculation function 507 is a function for storing the calculated area in the overlapping area storage unit 509 using an entry field ID indicating a specific entry field as a key.

  The stroke identification function 510 identifies that the stroke is written in the entry field having the largest overlap area by comparing the area of the overlap part in each entry field stored in the overlap area storage unit 509. It is a function to do.

  The symbol identification function 511 is a function for identifying the symbol entered by the user by referring to the symbol table 512 based on the stroke data identified by the identification function 510 as being entered in a specific entry field. is there.

  Here, the symbol table 512 will be described with reference to FIG. The symbol table 512 includes a symbol ID, stroke data, and contents. The symbol ID is information for identifying a symbol entered by the user using the electronic pen 10, and the stroke data is stroke data indicating each symbol. The content represents the content of each symbol indicated by each stroke data. According to this, the symbol with the symbol ID “G010” is the number “1”. Specifically, the symbol identification function 511 refers to the symbol table 512 based on the stroke data of what the stroke identification function 510 has identified as a stroke entered in a specific entry field, thereby determining the symbol indicated by the stroke. Identify.

  The information storage function 513 is a function for acquiring information related to a specific entry field for which identification processing has been performed by executing the identification program 501 and storing the information in the user DB 6. Here, the user DB 6 will be described. The user DB 6 is composed of a user ID and entry field information, and stores information on the obtained entry field using a user ID that can identify the user as a key. Specifically, in this embodiment, the user ID is identification information of the user who fills in the application form 36. In this case, the identification server 5 can obtain the user ID by various methods such as obtaining the user ID from the electronic pen 10 used by the user. The entry field information is information such as the entry field in which the identification process is performed and the symbol indicated by the stroke corresponding to the entry field. Specifically, the number “2” is entered in the entry field 54. Information. According to this, the identification server 5 can collectively manage information acquired by user entry, and the user DB 6 can easily refer to the information at an arbitrary timing.

[Identification process]
Next, first to fourth identification processes executed by the identification system 100 will be described. In principle, the identification server 5 identifies any entry field corresponding to the stroke entered by the user using the electronic pen 10 by performing any one of the first to fourth identification processes.

  First, the first identification process executed by the identification system 100 will be described. FIG. 12 is a flowchart of the first identification process. Note that the first identification process is a process performed by the identification server 5 when the sample points for the strokes entered by the user using the electronic pen 10 can be evenly extracted. For convenience, it is assumed that one symbol composed of one stroke is entered in one entry column. That is, a symbol composed of two strokes or more is not entered, and two or more symbols are not entered in one entry column.

  First, the user enters a symbol in the entry field of the application form 36 using the electronic pen 10. Then, by filling a check mark in the transmission box on the application form 36, the entry data is transmitted to the identification server 5 via the terminal device 25.

  The identification server 5 acquires entry data and extracts coordinate data for each stroke from the entry data (step S1). That is, coordinate data for each symbol is extracted from the acquired entry data. And the identification server 5 extracts the coordinate data of the sample point which comprises the said stroke further from the coordinate data for every extracted stroke (step S2). Further, the identification server 5 extracts the coordinate data of the coordinates A1 to A3 that define the entry field whose entry field ID is “Kn” from the coordinate table as the entry part coordinates (step S3). At this time, it is assumed that the entry column ID “Kn” is the smallest number among the entry column IDs of the entry columns provided in the application form 36. Specifically, in the present embodiment, the entry field ID of the entry field provided on the application form 36 is “K001 to K010”, and therefore the entry field ID “Kn” in step S3 in this case is “K001”. It becomes. Based on the coordinate data of the sample points, the identification server 5 calculates how many sample points constituting the stroke are included in the entry parts defined by the coordinates A1 to A3 (step S4), and sets the entry column ID. It is temporarily stored in the memory as a key (step S5).

  Next, the identification server 5 determines whether or not the processing of steps S3 to S5 has been performed for all entry fields provided in the application form 36 (step S6). When the processing of steps S3 to S5 is not performed for all the entry fields (step S6; NO), the identification server 5 adds 1 to the entry field ID (step S10), and the new entry field ID “Kn”. Steps S3 to S5 are repeated based on the entry field. On the other hand, when the processes of steps S3 to S5 have been performed for all the entry fields (step S6; YES), the identification server 5 determines that the stroke is the entry field that contains the most sample points based on the information stored in the memory. It is identified that it has been entered (step S7).

  Next, the identification server 5 identifies the symbol represented by the stroke based on the coordinate data of the stroke and the symbol table (step S8). And the identification server 5 memorize | stores in the user DB6 the information of the symbol which the user entered into the identified entry column and the said entry column using the user ID acquired from the electronic pen 10 which a user uses as a key ( Step S9). Thereby, the first identification process ends.

  According to this, even when the stroke entered by the user using the electronic pen 10 is applied to a plurality of entry fields provided on the application form 36, the stroke can be handled easily and accurately. The entry field can be identified.

  Next, the second identification process executed by the identification system 100 will be described. FIG. 13 is a flowchart of the second identification process. The second identification process is a process performed by the identification server 5 when sample points for strokes entered by the user using the electronic pen 10 cannot be extracted equally. For convenience, it is assumed that one symbol composed of one stroke is entered in one entry column. That is, a symbol composed of two strokes or more is not entered, and two or more symbols are not entered in one entry column.

  First, the user enters a symbol in the entry field of the application form 36 using the electronic pen 10. Then, by filling a check mark in the transmission box on the application form 36, the entry data is transmitted to the identification server 5 via the terminal device 25.

  First, the identification server 5 extracts the coordinate data of the coordinates A1 to A3 that define the entry field of the entry field ID “Kn” from the coordinate table as entry part coordinates (step S11). Further, the identification server 5 extracts the coordinate data of the stroke passing through the entry field of the entry field ID “Kn” from the entry data acquired from the electronic pen 10 via the terminal device 25 based on the coordinates A1 to A3 ( Step S12). That is, coordinate data for each symbol passing through the entry field of the entry field ID “Kn” is extracted from the acquired entry data. Further, the identification server 5 extracts the coordinate data of the sample points constituting the extracted stroke from the entry data (step S13). Then, the identification server 5 calculates the coordinate data of the coordinates B1 to B3 that define the stroke part based on the coordinate data of the sample points (step S14).

  Next, the identification server 5 calculates the area of the overlapping portion based on the coordinates B1 to B3 that define the stroke portion and the coordinates A1 to A3 that define the entry portion (step S16), and the entry field ID “Kn” "Is used as a key to store the area of the overlapping portion in the overlapping area storage unit (step S17). Then, the identification server 5 determines whether or not the processing of steps S11 to S17 has been performed for all the entry fields provided in the application form 36 (step S18). When the processes of steps S11 to S17 are not performed for all the entry fields (step S18; NO), the identification server 5 adds 1 to the entry field ID (step S19), and the new entry field ID “Kn”. Steps S11 to S17 are repeated based on the entry field. On the other hand, when the processes of steps S11 to S17 are performed for all the entry fields (step S18; YES), the identification server 5 has the largest overlapping area for each stroke based on the information stored in the overlapping area storage unit. It is identified as having been entered in the entry field (step S20).

  Next, the identification server 5 identifies the symbol represented by each stroke based on the coordinate data of each stroke and the symbol table (step S21). And the identification server 5 memorize | stores in the user DB6 the information of the symbol which the user entered into the identified entry column and the said entry column using the user ID acquired from the electronic pen 10 which a user uses as a key ( Step S22). Thereby, the second identification process ends.

  According to this, even when the sample points for the stroke cannot be extracted uniformly, the entry column corresponding to the stroke can be identified easily and accurately.

  Next, the third identification process executed by the identification system 100 will be described. FIG. 14 is a flowchart of the third identification process. The third identification process is a process performed by the identification server 5 when sample points for strokes entered by the user using the electronic pen 10 cannot be extracted equally. For convenience, it is assumed that one symbol composed of one stroke is entered in one entry column. That is, a symbol composed of two strokes or more is not entered, and two or more symbols are not entered in one entry column.

  First, the user enters a symbol in the entry field of the application form 36 using the electronic pen 10. Then, by filling a check mark in the transmission box on the application form 36, the entry data is transmitted to the identification server 5 via the terminal device 25.

  First, the identification server 5 extracts the coordinate data of the coordinates A1 to A3 that define the entry field of the entry field ID “Kn” from the coordinate table as entry part coordinates (step S31). Further, the identification server 5 extracts the coordinate data of the stroke passing through the entry field of the entry field ID “Kn” from the entry data acquired from the electronic pen 10 via the terminal device 25 based on the coordinates A1 to A3 ( Step S32). That is, the coordinate data of the symbol passing through the entry field of the entry field ID “Kn” is extracted from the acquired entry data. And the identification server 5 extracts the coordinate data of the sample point which comprises the extracted stroke (step S33). Furthermore, the identification server 5 calculates the coordinate data of the coordinates B1 to B3 that define the stroke part based on the coordinate data of the sample points (step S34). Then, the identification server 5 calculates the area of the stroke part from the maximum value and the minimum value on the XY axes of the coordinates B1 to B3 that define the stroke part (step S35).

  Next, the identification server 5 calculates the area of the overlapping portion based on the coordinates B1 to B3 that define the stroke portion and the coordinates A1 to A3 that define the entry portion (step S36). Then, the identification server 5 determines whether or not the area of the overlapping part is 51% or more of the area of the stroke part calculated in step S35 (step S37). When the area of the stroke part is less than 51%, the identification server 5 determines whether or not the processing of step differences 31 to 36 has been performed for all the entry fields provided in the application form 36 (step S40). On the other hand, when the area of the stroke portion is 51% or more, the identification server 5 identifies that the stroke has been entered in the entry field of the entry field ID “Kn” (step S39). Then, the identification server 5 determines whether or not the processing of steps S31 to S36 has been performed for all entry fields provided in the application form 36 (step S40).

  As a result of the determination, when the processes of steps S31 to S36 are not performed for all the entry fields (step S40; NO), the identification server 5 adds 1 to the entry field ID (step S38), and a new entry field ID is obtained. Based on the entry column of “Kn”, the processes of steps S31 to S36 are repeated. On the other hand, as a result of the determination, when the processing of steps S31 to S36 is performed for all the entry fields (step S40; YES), the symbol represented by each stroke is identified based on the coordinate data of each stroke and the symbol table ( Step S41). And the identification server 5 memorize | stores in the user DB6 the information of the symbol which the user entered into the identified entry column and the said entry column using the user ID acquired from the electronic pen 10 which a user uses as a key ( Step S42). Thereby, the third identification process ends.

  According to this, even when the sample points for the stroke cannot be extracted uniformly, if the entry field in which the area of the overlapping part is equal to or greater than a certain ratio in the area of the stroke part is found, the entry field is easily and accurately Can be identified.

  In the above embodiment, the area of the overlapping portion is defined as 51% or more of the area of the stroke portion, but the present invention is not limited to this, and an arbitrary ratio can be set. Specifically, when the entry field provided in the application form 36 is small and there is a high possibility that a symbol entered by the user will protrude from the entry field, the ratio can be set small.

  Next, the fourth identification process executed by the identification system 100 will be described. FIG. 15 is a flowchart of the fourth identification process. The fourth identification process is a process performed by the identification server 5 when the sample points for the strokes entered by the user using the electronic pen 10 cannot be extracted equally. For convenience, it is assumed that one symbol composed of one stroke is entered in one entry column. That is, a symbol composed of two strokes or more is not entered, and two or more symbols are not entered in one entry column.

  First, the user enters a symbol in the entry field of the application form 36 using the electronic pen 10. Then, by filling a check mark in the transmission box on the application form 36, the entry data is transmitted to the identification server 5 via the terminal device 25.

  The identification server 5 acquires entry data and extracts coordinate data for each stroke from the entry data (step S51). That is, coordinate data for each symbol is extracted from the acquired entry data. And the identification server 5 extracts the coordinate data of the sample point which comprises the extracted stroke (step S52). Further, the identification server 5 extracts all entry fields including sample points constituting the stroke (step S53). And the identification server 5 determines whether the process of step S53 was performed with respect to all the sample points which comprise a stroke (step S54). When the process of step S53 is not performed on all sample points (step S54; NO), the identification server 5 repeatedly performs the process. On the other hand, when the process of step S53 is performed for all the sample points (step S54; YES), the identification server 5 defines the stroke portion based on the coordinate data of the sample points extracted in step S52. The coordinate data of the coordinates B1 to B3 is calculated (step S55). Further, the identification server 5 extracts the coordinate data of the coordinates A1 to A3 that define the entry part of the entry column extracted in step S53 from the coordinate table (step S56).

  Next, the identification server 5 calculates the area of the overlapping portion based on the coordinates B1 to B3 that define the stroke portion and the coordinates A1 to A3 that define the entry portion (step S57), and uses the entry column ID as a key. As described above, the area of the overlapping portion is stored in the overlapping area storage portion (step S58). Then, the identification server 5 determines whether or not the processing in steps S56 to S58 has been performed for all the entry fields extracted in step S53 (step S59). When the processing of steps S56 to S58 is not performed for all the entry fields (step S59; NO), the identification server 5 repeatedly performs the processing. On the other hand, when the processing of steps S56 to S58 has been performed for all entry fields (step S59; YES), the identification server 5 uses the entry field ID as a key and the stroke is the most based on the information stored in the overlapping area storage unit. It is identified as having been entered in the entry field with a large overlapping area (step S60).

  Next, the identification server 5 identifies the symbol indicated by the stroke based on the coordinate data of the stroke and the symbol table (step S61). And the identification server 5 memorize | stores in the user DB6 the information of the symbol which the user entered into the identified entry column and the said entry column using the user ID acquired from the electronic pen 10 which a user uses as a key ( Step S62). Thereby, the fourth identification process ends.

  According to this, even when the sample points constituting the stroke cannot be extracted uniformly, the entry column corresponding to the stroke can be identified easily and accurately. Further, even if it is not necessary to process all the entry fields provided in the application form 36 for one stroke, the process can be easily performed by processing only the entry field including the sample points constituting the stroke. The entry field in which the stroke is entered can be identified.

  In the above embodiment, the entry field provided in the application form 36 is configured to be adjacent horizontally as shown in FIG. 8A, but the present invention is not limited to this, and the application is made. Even if the entry fields provided in the book 36 are arbitrarily adjacent vertically and horizontally, the area of the overlapping portion based on the coordinates A1 to A3 that define the entry portion and the coordinates B1 to B3 that define the stroke portion It is possible to apply the present invention by calculating.

  In the above embodiment, a single stroke symbol is entered in one entry column for convenience. However, the present invention is not limited to this, and for example, the numeral “4” is entered in one entry column. The present invention can also be applied to the case where a symbol composed of two strokes or more is entered. In this case, the process of identifying the symbol entered in the predetermined entry column by the user with reference to the symbol table included in each identification process was confirmed for all strokes identified as entered in each entry column. It will be done later.

  According to the present invention, even when a stroke is entered across a plurality of entry fields, the identification server 5 can easily and accurately identify the entry field intended by the user. It is possible to reduce the burden on the user to fill in correctly. Further, since extra strokes can be eliminated, it is effective in improving accuracy when performing character recognition processing and the like.

[Modification]
In the above embodiment, the identification server 5 is configured to identify the entry column corresponding to the stroke entered by the user with the electronic pen 10 by performing any one of the first to fourth identification processes. The present invention is not limited to this, and the first identification process and any one of the second to fourth identification processes may be combined for identification.

  Specifically, the identification server 5 determines whether or not the sample points constituting the stroke entered by the user with the electronic pen 10 are evenly extracted with respect to the stroke. The identification process is performed, and if it is not uniformly extracted, one of the second to fourth identification processes is performed. Since the first identification process identifies the entry field based on the number of sample points constituting the stroke without calculating the overlapping area, the processing load on the identification server 5 is reduced compared to the second to fourth identification processes. It can be done quickly with less. Therefore, by combining the first identification process and any one of the second to fourth identification processes, it becomes possible to efficiently and accurately identify the entry field while reducing the processing load on the identification server 5. .

  With this identification system, it is possible to easily and accurately identify for which item a stroke written across adjacent items is written.

It is a figure which shows the usage pattern of an electronic pen typically. It is a functional block diagram which shows the structure of an electronic pen. It is a figure explaining the expression method of the information by the dot pattern printed on the exclusive paper. It is an example of a dot pattern and the information corresponding to it. The structure of a form composed of dedicated paper is shown. An example of an electronic pen form is shown. It is a figure which shows schematic structure of the identification system in this invention. It is a figure which shows typically the relationship between the position part which prescribes | regulates each area | region and the entry part, stroke part, and duplication part in the application form of this embodiment. It is a functional block diagram of the identification server contained in the identification system shown in FIG. It is a figure which shows typically the data structure of a coordinate table. It is a figure which shows the data structure of a symbol table typically. It is a flowchart of the 1st identification process in this embodiment. It is a flowchart of the 2nd identification process in this embodiment. It is a flowchart of the 3rd identification process in this embodiment. It is a flowchart of the 4th identification processing in this embodiment.

Explanation of symbols

2 ... Network 5 ... Identification server 6 ... User DB
DESCRIPTION OF SYMBOLS 10 ... Electronic pen 11 ... Processor 12 ... Memory 13 ... Data communication unit 14 ... Battery 25 ... Terminal device 26 ... Inquiry server 27 ... Service server 36 ... Application form 100 ... Identification system

Claims (8)

In an identification system using a form for an electronic pen printed with a dot pattern that can be recognized by an electronic pen,
The electronic pen form is composed of a plurality of entry fields that an entry person fills in with the electronic pen, and is printed with a dot pattern corresponding to the information in the entry field,
The identification system is
Coordinate information acquisition means for acquiring, as coordinate information, information in which the area set in the entry field is associated with the position coordinates on the dot pattern;
Entry data acquisition means for acquiring entry data entered in the electronic pen form;
Stroke extracting means for extracting coordinate data relating to a stroke entered by the writer in one operation using the electronic pen from the entry data;
Sample point extraction means for extracting coordinate data of one or more sample points constituting the stroke from the coordinate data relating to the stroke;
An identification system comprising: identification means for identifying an entry field in which the stroke is entered based on the coordinate data of the sample point and the coordinate information. The identification system further comprises calculation means for calculating the number of sample points included in each entry field constituting the electronic pen form based on the coordinate data of the sample points and the coordinate information,
2. The identification system according to claim 1, wherein the identification unit identifies an entry field including the most sample points as an entry field in which the stroke is entered. In an identification system using a form for an electronic pen printed with a dot pattern that can be recognized by an electronic pen,
The electronic pen form is composed of a plurality of entry fields that an entry person fills in with the electronic pen, and is printed with a dot pattern corresponding to the information in the entry field,
The identification system is
Coordinate information acquisition means for acquiring, as coordinate information, information in which the area set in the entry field is associated with the position coordinates on the dot pattern;
Entry data acquisition means for acquiring entry data entered in the electronic pen form;
Stroke extracting means for extracting coordinate data relating to a stroke entered by the writer in one operation using the electronic pen from the entry data;
Sample point extraction means for extracting coordinate data of one or more sample points constituting the stroke from the coordinate data relating to the stroke;
Stroke part coordinate calculation means for calculating a stroke part coordinate that defines a stroke part that is an area set by the stroke based on the coordinate data of the sample point;
From the coordinate information, an entry part coordinate extracting means for extracting entry part coordinates defining an entry part that is an area set by the entry field;
Based on the stroke part coordinates and the entry part coordinates, an overlapping area calculation means for calculating an area of an overlapping part that is an area where the stroke part and the entry part overlap;
An identification system comprising: identification means for identifying an entry field in which the stroke is entered based on the overlapping area.   4. The identification system according to claim 3, wherein the identification unit identifies an entry field corresponding to the entry part having the largest overlapping area as an entry field in which the stroke is entered. In an identification system using a form for an electronic pen printed with a dot pattern that can be recognized by an electronic pen,
The electronic pen form is composed of a plurality of entry fields that an entry person fills in with the electronic pen, and is printed with a dot pattern corresponding to the information in the entry field,
The identification system is
Coordinate information acquisition means for acquiring, as coordinate information, information in which the area set in the entry field is associated with the position coordinates on the dot pattern;
Entry data acquisition means for acquiring entry data entered in the electronic pen form;
Stroke extracting means for extracting coordinate data relating to a stroke entered by the writer in one operation using the electronic pen from the entry data;
Sample point extraction means for extracting coordinate data of one or more sample points constituting the stroke from the coordinate data relating to the stroke;
Determining means for determining whether or not the sample points are evenly extracted with respect to the stroke;
First identification means for identifying an entry field in which the stroke is entered based on the coordinate data of the sample point and the coordinate information;
Stroke part coordinate calculation means for calculating a stroke part coordinate that defines a stroke part that is an area set by the stroke based on the coordinate data of the sample point;
From the coordinate information, an entry part coordinate extracting means for extracting entry part coordinates defining an entry part that is an area set by the entry field;
Based on the stroke part coordinates and the entry part coordinates, an overlap area calculation means for calculating an area of an overlap part, which is an area where the stroke part and the entry part overlap;
Second identification means for identifying an entry field in which the stroke is entered based on the overlapping area;
When the determination means determines that the sample points have been extracted evenly with respect to the stroke, the entry section in which the stroke is entered by the first identification means is identified,
An identification system in which, when the determination unit determines that the sample points are not evenly extracted with respect to the stroke, the second identification unit identifies the entry field in which the stroke is entered. . A program executed by a computer using a form for an electronic pen printed with a dot pattern that can be recognized by an electronic pen,
The electronic pen form is composed of a plurality of entry fields that an entry person fills in with the electronic pen, and is printed with a dot pattern corresponding to the information in the entry field,
The program is
Coordinate information acquisition means for acquiring, as coordinate information, information in which the region set in the entry field and the position coordinates on the dot pattern are associated with each other;
Entry data acquisition means for acquiring entry data entered in the electronic pen form;
Stroke extracting means for extracting coordinate data relating to a stroke entered by the entry person in one operation using the electronic pen from the entry data;
Sample point extraction means for extracting coordinate data of one or more sample points constituting the stroke from the coordinate data relating to the stroke;
A program for causing the computer to function as identification means for identifying an entry field in which the stroke is entered based on the coordinate data of the sample point and the coordinate information. A program executed by a computer using a form for an electronic pen printed with a dot pattern that can be recognized by an electronic pen,
The electronic pen form is composed of a plurality of entry fields that an entry person fills in with the electronic pen, and is printed with a dot pattern corresponding to the information in the entry field,
The program is
Coordinate information acquisition means for acquiring, as coordinate information, information in which the region set in the entry field and the position coordinates on the dot pattern are associated with each other;
Entry data acquisition means for acquiring entry data entered in the electronic pen form;
Stroke extracting means for extracting coordinate data relating to a stroke entered by the entry person in one operation using the electronic pen from the entry data;
Sample point extraction means for extracting coordinate data of one or more sample points constituting the stroke from the coordinate data relating to the stroke;
Stroke part coordinate calculation means for calculating a stroke part coordinate that defines a stroke part that is an area set by the stroke based on the coordinate data of the sample point;
An entry part coordinate extracting means for extracting an entry part coordinate that defines an entry part that is an area set by the entry field from the coordinate information;
Based on the stroke part coordinates and the entry part coordinates, an overlap area calculation means for calculating an area of an overlap part, which is an area where the stroke part and the entry part overlap,
A program for causing the computer to function as identification means for identifying an entry field in which the stroke is entered based on the overlapping area. A program executed by a computer using a form for an electronic pen printed with a dot pattern that can be recognized by an electronic pen,
The electronic pen form is composed of a plurality of entry fields that an entry person fills in with the electronic pen, and is printed with a dot pattern corresponding to the information in the entry field,
The program is
Coordinate information acquisition means for acquiring, as coordinate information, information in which the region set in the entry field and the position coordinates on the dot pattern are associated with each other;
Entry data acquisition means for acquiring entry data entered in the electronic pen form;
Stroke extracting means for extracting coordinate data relating to a stroke entered by the entry person in one operation using the electronic pen from the entry data;
Sample point extraction means for extracting coordinate data of one or more sample points constituting the stroke from the coordinate data relating to the stroke;
Determination means for determining whether or not the sample points are evenly extracted with respect to the stroke,
First identification means for identifying an entry field in which the stroke is entered based on the coordinate data of the sample point and the coordinate information;
Stroke part coordinate calculation means for calculating a stroke part coordinate that defines a stroke part that is an area set by the stroke based on the coordinate data of the sample point;
An entry part coordinate extracting means for extracting an entry part coordinate that defines an entry part that is an area set by the entry field from the coordinate information;
Based on the stroke part coordinates and the entry part coordinates, an overlap area calculation means for calculating an area of an overlap part, which is an area where the stroke part and the entry part overlap,
Causing the computer to function as second identification means for identifying an entry field in which the stroke is entered based on the overlapping area;
When the determination means determines that the sample points have been extracted evenly with respect to the stroke, the entry section in which the stroke is entered by the first identification means is identified,
When the determination means determines that the sample points are not evenly extracted with respect to the stroke, the program identifies the entry field in which the stroke is entered by the second identification means.

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