JP4835529B2 - Terminal device and program used therefor - Google Patents

Description

  The present invention belongs to the technical field of a geographical information providing system, and particularly relates to a technology for providing distance information on a map printed on an electronic pen medium or the like by an electronic pen.

  In recent years, pen-type input devices called “electronic pens” and “digital pens” have appeared (hereinafter referred to as “electronic pens” in this specification). The developed “Anoto pen” is known (see Patent Document 1). Anotopen is used with special 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 annotation pen, or puts a check mark on the image designed on the special paper, the small camera displays the dot pattern printed on the special paper as the pen moves. Entry information such as characters and images detected and written by the user is acquired. This entry information is transmitted from the Anotopen by the data communication unit to a terminal device such as a nearby personal computer or mobile phone. 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. Therefore, as a method for digitizing data entered in various business documents, application forms, contracts, etc., a system using an electronic pen is becoming widespread (for example, Patent Document 2).

  The applicant uses an electronic pen, such as that found in Anoto's technology, on the dedicated paper on which the map is printed. A geographical information providing system that provides a route to a destination and distance information of the route has been proposed (see Patent Document 3). Even before the applicant's proposal, construction sites, surveying companies, and map companies often find the length, etc. from the drawing, so use a digitizer coordinate input device and hit the panel with a stylus pen. For example, a technique for obtaining a length in an architectural drawing by inputting coordinate values has been proposed (see Patent Document 4).

Japanese translation of PCT publication No. 2003-511761 JP 2004-153612 A JP 2004-46424 A Japanese Patent Publication No. 3-50283

  In the above-described geographical information providing system, the shortest straight path from the departure point to the destination is calculated based on the latitude and longitude information of the departure point and the latitude and longitude information of the destination. Therefore, since this geographical information providing system does not calculate distance information of a route other than the shortest straight route, there is a problem in that it cannot necessarily provide distance information regarding a user's desired route. Similarly, the above-described coordinate input device using a digitizer merely hits the panel with a stylus pen and obtains the length between the input coordinate values.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a terminal device that can provide distance information according to a route desired by a user by operating an electronic pen or a scanner, and also provide a program used therefor.

  The terminal device according to the present invention receives discrete coordinate data calculated by reading a coded pattern printed on a medium from an electronic pen or a scanner, and calculates a distance according to the length of the handwriting from the coordinate data. A data communication means for receiving coordinate data; and a plurality of position coordinates of the coordinate data received by the data communication means and calculated by the electronic pen or the scanner along the handwriting, After dividing the interval so that the monotonous increase or decrease of the X coordinate continues in chronological order, the interpolation function is interpolated for each interval, and the distance corresponding to the handwriting is calculated based on the line integral value of each interpolation function. And a distance calculating means.

  According to this configuration, when the user fills in or moves on the medium while touching the medium with the electronic pen or the scanner, the electronic pen or the scanner acquires the discrete coordinate data along the handwriting or the movement locus. Calculate and send to terminal device. In the terminal device, the data communication means receives the coordinate data transmitted from the electronic pen or the scanner, and the distance calculation means is received by the data communication means to enable application of interpolation by an interpolation function, After dividing the position coordinates of the coordinate data calculated by the electronic pen or scanner along the interval so that the monotonous increase or decrease of the X coordinate continues in time series order, interpolation is performed with an interpolation function for each interval. The distance corresponding to the handwriting is calculated based on the line integral value of each interpolation function. Therefore, when the user enters desired characters or line segments with an electronic pen or a scanner, the terminal device can accurately calculate the distance according to the handwriting.

  Alternatively, the terminal device according to the present invention receives discrete coordinate data calculated by reading an encoded pattern printed on a medium from an electronic pen or a scanner, and a distance corresponding to the length of the handwriting from the coordinate data. A data communication means for receiving coordinate data, and a plurality of position coordinates of the coordinate data received by the data communication means and calculated by the electronic pen or the scanner along the handwriting Is divided into sections so that the monotonous increase or decrease of the X coordinate continues in time series order and the angle formed by the three consecutive points does not become less than the threshold angle, and is interpolated with an interpolation function for each section. And a distance calculating means for calculating a distance according to the handwriting based on the line integral value of each interpolation function.

  According to this configuration, when the user fills in or moves on the medium while touching the medium with the electronic pen or the scanner, the electronic pen or the scanner acquires the discrete coordinate data along the handwriting or the movement locus. Calculate and send to terminal device. In the terminal device, the data communication means receives the coordinate data transmitted from the electronic pen or the scanner, and the distance calculation means is received by the data communication means to enable application of interpolation by an interpolation function, Along the coordinate data calculated by the electronic pen or scanner so that the monotonous increase or decrease of the X coordinate continues in chronological order, and the angle formed by the three consecutive points is less than the threshold angle. After dividing into sections so as not to become, interpolation is performed for each section with an interpolation function, and a distance corresponding to the handwriting is calculated based on the line integral value of each interpolation function. Therefore, when the user enters desired characters or line segments with an electronic pen or a scanner, the terminal device can accurately calculate the distance according to the handwriting.

  Alternatively, the terminal device according to the present invention receives discrete coordinate data calculated by reading the coded pattern of the medium on which the map area and the coded pattern are printed, from the electronic pen or the scanner, and from the coordinate data A terminal device for calculating a distance on the ground surface corresponding to a route indicated by a handwriting on the map area, the data communication means receiving coordinate data, received by the data communication means, and along the handwriting A plurality of position coordinates of the coordinate data calculated by the electronic pen or the scanner are divided into sections such that the monotonous increase or decrease of the X coordinate continues in time series order, and interpolation is performed with an interpolation function for each section. And a distance calculating means for calculating a distance on the ground surface corresponding to the handwriting on the map area based on a line integral value of each interpolation function. And features.

  According to this configuration, when the user traces the medium with the electronic pen or the scanner in contact with the map area of the medium, the electronic pen or the scanner calculates discrete coordinate data along the traced path, Send to terminal device. In the terminal device, the data communication means receives the coordinate data transmitted from the electronic pen or the scanner, and the distance calculation means is received by the data communication means to enable application of interpolation by an interpolation function, After dividing the position coordinates of the coordinate data calculated by the electronic pen or scanner along the interval so that the monotonous increase or decrease of the X coordinate continues in time series order, interpolation is performed with an interpolation function for each interval. The distance on the ground surface corresponding to the handwriting on the map area is calculated based on the line integral value of each interpolation function. Therefore, when the user traces a desired route on the map area with the electronic pen or the scanner, the terminal device can accurately calculate the distance on the map according to the handwriting traced on the map area. .

  Alternatively, the terminal device according to the present invention receives discrete coordinate data calculated by reading the coded pattern of the medium on which the map area and the coded pattern are printed, from the electronic pen or the scanner, and from the coordinate data A terminal device for calculating a distance on the ground surface corresponding to a route indicated by a handwriting on the map area, the data communication means receiving coordinate data, received by the data communication means, and along the handwriting A plurality of position coordinates of the coordinate data calculated by the electronic pen or the scanner is such that the monotonous increase or decrease of the X coordinate continues in chronological order, and the angle formed by three consecutive points is less than the threshold angle. After dividing into sections so as not to become, and interpolating with an interpolation function for each section, handwriting on the map area based on the line integral value of each interpolation function It characterized in that it comprises a distance calculating means for calculating a distance on the corresponding surface.

  According to this configuration, when the user traces the medium with the electronic pen or the scanner in contact with the map area of the medium, the electronic pen or the scanner calculates discrete coordinate data along the traced path, Send to terminal device. In the terminal device, the data communication means receives the coordinate data transmitted from the electronic pen or the scanner, and the distance calculation means is received by the data communication means to enable application of interpolation by an interpolation function, Along the coordinate data calculated by the electronic pen or scanner so that the monotonous increase or decrease of the X coordinate continues in chronological order, and the angle formed by the three consecutive points is less than the threshold angle. After dividing into sections so as not to become, interpolation is performed with an interpolation function for each section, and the distance on the ground surface corresponding to the handwriting on the map area is calculated based on the line integral value of each interpolation function. Therefore, when the user traces a desired route on the map area with the electronic pen or the scanner, the terminal device can accurately calculate the distance on the map according to the handwriting traced on the map area. .

  Further, in the above terminal device, the interpolation function is a spline function or a Lagrangian function. In this case, the electronic pen can calculate a distance obtained by connecting the position coordinates with a smooth curve.

  Furthermore, the terminal device may include a voice output unit that notifies the distance calculated by the distance calculation unit. Thereby, the user can recognize the distance calculated by the distance calculation means.

  Further, the program according to the present invention receives discrete coordinate data calculated by reading a coded pattern printed on a medium from an electronic pen or scanner, and calculates a distance corresponding to the length of the handwriting from the coordinate data. A program executed by a computer that performs calculation, a data communication unit that receives coordinate data, a plurality of coordinate data received by the data communication unit, and calculated by the electronic pen or the scanner along the handwriting The position coordinates are divided into sections so that the monotonous increase or decrease of the X coordinate continues in chronological order, and interpolation is performed with an interpolation function for each section, and the handwriting is based on the line integral value of each interpolation function. The computer is caused to function as a distance calculation means for calculating a distance.

  Alternatively, the program according to the present invention receives discrete coordinate data calculated by reading a coded pattern printed on a medium from an electronic pen or a scanner, and calculates a distance corresponding to the length of the handwriting from the coordinate data. A program executed by a computer that performs calculation, a data communication unit that receives coordinate data, a plurality of coordinate data received by the data communication unit, and calculated by the electronic pen or the scanner along the handwriting The position coordinates are divided into sections so that the monotonous increase or decrease of the X coordinate continues in chronological order and the angle formed by the three consecutive points does not become less than the threshold angle, and then the interpolation function for each section. The computer functions as a distance calculating means for calculating the distance corresponding to the handwriting based on the line integral value of each interpolation function. And wherein the Rukoto.

  Alternatively, the program according to the present invention receives discrete coordinate data calculated by reading the coded pattern of the medium on which the map area and the coded pattern are printed, from an electronic pen or scanner, and from the coordinate data, A program executed by a computer that calculates a distance on the ground surface corresponding to a route indicated by a handwriting on a map area, the data communication means receiving coordinate data, received by the data communication means, and along the handwriting After dividing the plurality of position coordinates of the coordinate data calculated by the electronic pen or the scanner in such a manner that the monotonous increase or decrease of the X coordinate continues in time series order, an interpolation function is used for each section. Interpolation is performed, and the distance on the ground surface corresponding to the handwriting on the map area is calculated based on the line integral value of each interpolation function. Causing the computer to function as a distance computation means for characterized.

  Alternatively, the program according to the present invention receives discrete coordinate data calculated by reading the coded pattern of the medium on which the map area and the coded pattern are printed from an electronic pen or scanner, and from the coordinate data, the program is received. A program executed by a computer that calculates a distance on the ground surface corresponding to a route indicated by a handwriting on a map area, the data communication means receiving coordinate data, received by the data communication means, and along the handwriting The plurality of position coordinates of the coordinate data calculated by the electronic pen or the scanner are set such that the monotonous increase or decrease of the X coordinate continues in time series order, and the angle formed by three consecutive points is a threshold value. After dividing the section so that it is not less than an angle, interpolation is performed with an interpolation function for each section, and the line integral value of each interpolation function is calculated. Zui it is characterized by causing the computer to function as a distance calculating means for calculating a distance on the earth's surface corresponding to the handwriting on the map area.

  By executing the above program on a computer, the above-described terminal device can be realized.

  According to the terminal device and the program used therefor according to the present invention, when an entry is made on a medium such as a map area by operating an electronic pen and a scanner, the locus is calculated while calculating the coordinate data of the locus due to the entry. Calculate the distance. At this time, by interpolating a plurality of position coordinates of the discrete coordinate data acquired by the electronic pen or the scanner, it is possible to obtain a path more accurately by approaching the actually drawn locus. Thereby, accurate distance information according to the route desired by the user can be provided.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

<First Embodiment>
FIG. 1 shows a system configuration diagram of a map information providing system using the terminal device 3 of the present embodiment. As shown in FIG. 1, the map information providing system displays information transmitted from a dedicated paper (medium) 2A (2) on which a map is printed, an electronic pen 1A (1) tracing the map, and the electronic pen 1A. It is constituted by a terminal device 3 composed of a personal computer, a mobile phone or the like that receives and calculates information relating to the map and notifies the calculation result. The terminal device 3 receives discrete coordinate data calculated by reading a dot pattern (coded pattern) printed on the dedicated paper 2A from the electronic pen 1A, and according to the length of the handwriting from the coordinate data. The distance is calculated.

  The electronic pen 1A includes a pen tip portion 1a similar to a normal ink pen. When a user writes characters or a pattern on the dedicated paper 2A using the pen tip portion 1a in the same manner as a normal ink pen, the pen tip portion 1a. The dot pattern printed on the dedicated paper 2A is read locally and continuously along the trajectory (handwriting) moved, and the coordinates of the local position on the dedicated paper 2A are calculated. Together with the coordinate data, the electronic pen 1A The electronic pen identification ID for identifying the information, the written time information (time stamp), and the like are associated with each other and transmitted to the terminal device 3. When the terminal device 3 receives the electronic pen identification ID, the coordinate data, and the like from the electronic pen 1A, the terminal device 3 calculates a distance according to the movement locus of the electronic pen 1A based on the received coordinate data. Hereinafter, each configuration of the system will be described in detail.

[Special paper]
First, the dedicated paper (medium) 2A will be described. The dedicated paper 2A used in the present embodiment is a paper in which a dot pattern is printed on a paper, and further, a ruled line, an entry frame, a map and other designs and items, words, illustrations, and the like are printed thereon. The dot pattern is printed with ink containing carbon that absorbs infrared rays. In addition, the design or the like is printed with ink that does not absorb in the infrared region. The dot pattern and the design may be printed on the paper at the same time, or either one may be printed first.

  FIG. 2 shows an example of dedicated paper 2A on which a map or the like used in this embodiment is printed. The dedicated paper 2A shown in FIG. 2 has a map area 100 for displaying a map. The dot pattern is printed on almost the entire surface of the dedicated paper 2A, and on it, a map pattern, characters such as a building name, a map symbol, and the like are printed with normal ink not containing carbon. The user enters a desired route from the departure point to the destination in the map area 100 using the electronic pen 1A without being aware of the dot pattern.

[Dot pattern]
Next, a dot pattern (coded pattern) will be described. The dot pattern read by the electronic pen 1A employs the above-mentioned Anoto technology. FIG. 3 is a diagram for explaining the relationship between the dot position of the dot pattern printed on the dedicated paper 2A and the value to which the dot is converted. As shown in FIG. 3, each dot of the dot pattern is associated with a predetermined value depending on its position. That is, each dot is associated with a value of 0 to 3 depending on the direction in which the position of the dot is shifted from the reference position of the grid (intersection of vertical and horizontal lines: grid point). The value of each dot is further converted into a first bit value for the X coordinate and a second bit value for the Y coordinate. The dot pattern is configured such that the position coordinates on the dedicated paper 2A are determined by the combination of the information thus associated.

  FIG. 4 is a diagram for explaining a method of expressing information by a dot pattern printed on the dedicated paper 2A. FIG. 4A shows an arrangement of dot patterns in a certain local portion on the dedicated paper 2A. As shown in FIG. 4 (a), 6 × 6 dots are arranged in a range of about 2 mm in length and width so that a unique pattern can be obtained regardless of where 6 × 6 dots are taken from any part of the dedicated paper 2A. ing. The dot pattern formed by these 36 (= 6 × 6) dots has position coordinates (for example, where the dot pattern is located on the dedicated paper 2A) and a dot pattern address (coded pattern address). keeping. FIG. 4B is a diagram in which each dot shown in FIG. 4A is converted into a value associated with the regularity shown in FIG. 3 according to the shift direction from the reference position of the lattice. This conversion is performed by the electronic pen 1A that captures a dot pattern image.

[Electronic pen]
Next, the electronic pen 1A will be described with reference to FIG. The electronic pen 1 </ b> A includes a processor 11, a data communication unit 12, a battery 13, an LED 14, a CMOS camera 15, a pressure sensor 16, an ink cartridge 17, and a clock 18 inside the housing 10. The tip of the ink cartridge 17 is a pen tip portion 1a, and the user can draw a path, characters, and a picture while bringing the pen tip portion 1a of the electronic pen 1A into contact with the special paper 2A.

  The battery 13 is for supplying power to each component in the electronic pen 1A. For example, the power of the electronic pen 1A itself is turned on / off by attaching / detaching a cap (not shown) of the electronic pen 1A. May be. The pressure sensor 16 detects the pressure applied to the pen tip 1 a when the user writes characters on the dedicated paper 2 </ b> A with the electronic pen 1 </ b> A, that is, the writing pressure, and supplies the detected pressure to the processor 11. The clock 18 transmits time information indicating the current time (time stamp) and supplies the time information to the processor 11.

  The processor 11 switches on / off the switches of the LED 14 and the camera 15 based on the writing pressure data supplied from the pressure sensor 16. That is, when a user writes a character or the like on the dedicated paper 2A with the electronic pen 1A, the pen tip 1a is applied with writing pressure, and when the pressure sensor 16 detects a writing pressure of a predetermined value or more, the processor 11 Determines that the user has started entry, and activates the LED 14 and the camera 15. On the other hand, if the writing pressure detected by the pressure sensor 16 is less than the predetermined value, the processor 11 determines that the writing pressure by the user has ended, and ends the operation of the LED 14 and the camera 15.

  The LED 14 and the CMOS camera 15 are attached in the vicinity of the pen tip portion 1a of the electronic pen 1A, and an opening 10a is formed in a portion of the housing 10 facing the LED 14 and the CMOS camera 15. The LED 14 illuminates infrared rays toward the vicinity of the pen tip portion 1a on the dedicated paper 2A (region A: see FIG. 1). The area A is slightly deviated from the position where the pen tip 1a contacts the special paper 2A. The camera 15 captures a dot pattern in the area A illuminated by the LED 14 and supplies image data of the dot pattern to the processor 11. Here, since carbon absorbs infrared rays, the infrared rays irradiated by the LED 14 are absorbed by the carbon contained in the dots at the dot portions. Therefore, the dot portion has a small amount of infrared reflection, and the portion other than the dot has a large amount of infrared reflection. Therefore, the area of the dot containing carbon and the other area can be distinguished from the difference in the amount of reflected infrared light by photographing with the camera 15. Even if ruled lines or frames are printed in the photographing region, the ink such as the ruled lines and frames does not have absorbability in the infrared region, so that the dot pattern can be recognized. Note that the shooting area of the camera 15 is a range including a size of about 2 mm × about 2 mm as shown in FIG. 4A, and the camera 15 is shot about 50 to 100 times per second.

  During the user's entry, the processor 11 determines the X and Y coordinates (simply “coordinate data” on the dedicated paper 2 of the stroke (handwriting) to be entered by the user from the dot pattern of the image data supplied by the camera 15. Is also calculated continuously. That is, the processor 11 converts the image data of the dot pattern as shown in FIG. 4A supplied by the camera 15 into the data array shown in FIG. 4B, and further converts the X coordinate bit value · Y By converting to coordinate bit values, X and Y coordinate data are calculated from the data array by a predetermined calculation method, and a dot pattern address is calculated. Here, the dot pattern address is an identifier set for each page or each type of the dedicated paper 2A on which the map area 100 is printed, but at least the dot pattern address and the map scale information can correspond to each other. A dot pattern address is associated with each map area 100.

  Then, the processor 11 associates the time information 21 acquired from the clock 18, the dot pattern address 22, the coordinate data 23 and the writing pressure data 24, and acquires these information as the entry information 20. Then, the processor 11 causes the data communication unit 12 to transmit the entry information 20 to the terminal device 3. FIG. 6 shows a conceptual diagram of the entry information 20. Here, since the 6 × 6 dot pattern on one sheet of special paper 2A does not overlap within the special paper 2A, when the user traces the map area 100 with the electronic pen 1A, the traced portion is found. The position in the map area 100 can be specified from the entry information 20.

  The data communication unit 12 wirelessly transmits the entry information 20 associated with the time information 21, the dot pattern address 22, the coordinate data 23, and the writing pressure data 24 supplied by the processor 11 to the terminal device 3. Transmission by the data communication unit 12 is preferably performed by wireless transmission using Bluetooth (registered trademark). The data communication from the data communication unit 12 to the terminal device 3 may be performed by other methods such as wired transmission using a USB cable and data communication by contact with a terminal. Transmission of the entry information 20 to the terminal device 3 by the data communication unit 12 is performed immediately and sequentially.

[Terminal device]
Next, the terminal device 3 will be described with reference to FIG. The terminal device 3 includes, as hardware, an antenna device capable of data communication with the electronic pen 1A, a processor such as a CPU, a memory such as a ROM and a RAM, a speaker, a display, and the like. It is. FIG. 7 is a functional block diagram of the terminal device 3. The terminal device 3 performs a predetermined process by executing a dedicated application using the entry information 20 including the X and Y coordinate data received from the electronic pen 1A.

  As shown in FIG. 7, the terminal device 3 includes information storage means 30, data communication means 31, distance calculation means 32, audio output means 33, and display means 34. Physically, the information storage means 40 is constituted by a memory such as a ROM or a RAM, the data communication means 31 is constituted by a data communication unit, a processor or the like, the audio output means 33 is a speaker, the display means 34 is a display or the like. Composed. The distance calculation means 32 is incorporated in a processor such as a CPU.

  The information storage means 30 stores the scale value of the map printed on the map area 100 specified by the dot pattern address 22 in the map area 100 as scale information associated with the dot pattern address 22. Further, the memory 20 stores the entry information 20 acquired from the electronic pen 1A, the length L of the trajectory (handwriting) calculated by the distance calculation means 32, and the distance (path) D on the ground surface.

  The data communication unit 31 is a unit that immediately and sequentially acquires the entry information 20 transmitted by the data communication unit 12 of the electronic pen 1A. The data communication unit 31 uses an antenna or the like that receives a radio wave of a communication method using Bluetooth (registered trademark). Composed.

  The distance calculation means 32 refers to the plurality of entry information 20 received by the data communication means 31, reads out the scale value associated with the dot pattern address 22 included in the entry information 20 from the information storage means 30, Based on the coordinate data 23 from the start point 701 to the end point 703 (see FIG. 9) of the trajectory (handwriting), the length L of the trajectory (handwriting) is calculated, and the distance on the ground surface (path) from the length. D is calculated and stored in the information storage means 30. That is, the distance calculation means 30 calculates the length L of the handwriting entered between the pen-down position and the pen-up position using the plurality of position coordinates of the coordinate data 23.

  More specifically, the distance calculation means 32 is received by the data communication means 31 and is calculated by the electronic pen 1A along the handwriting, and the coordinates of a plurality of discrete position coordinate data 23 having a time-series order. In order to make it possible to apply spline interpolation or Lagrangian interpolation to the points, the interval is divided so that the monotonic increase or decrease of the X coordinate continues, and the interpolation function is applied so that a smooth curve is obtained. Even at the coordinate point where the angle formed by the three coordinate points is less than the threshold, the section is divided as a boundary of the section, and interpolation is applied to each section to obtain an interpolation function. In addition, the distance calculation means 63 calculates the line integral value of the interpolation function of each section and integrates the integral values to obtain the handwriting length L with high accuracy.

  At the same time, the distance calculation means 32 refers to the scale information stored in the information storage means 30 based on the dot pattern address 22 included in the entry information 20, and the scale value c corresponding to the dot pattern address 22. Read. Then, the distance calculation means 32 calculates a distance (path) D on the ground surface from the pen-down position to the pen-up position from the handwriting length L and the scale value c calculated as described above. . The scale information stored in the information storage means 30 may be a distance on the ground surface per unit length on the map (1 cm on the map corresponds to ○ km of the ground surface) or a scale ratio (1: 25000). 1/25000).

Here, in order to obtain the distance (distance) D on the ground surface, if s is a magnification to be multiplied based on the scale information with respect to the length on the map,
D = L x s
For example, if the scale value c = 1/25000,
D = L × s = L × 1 / c
It becomes.

  In other words, the distance calculation means 32 uses the electronic pen 1A from the pen down position to the pen up position when the detachment of the pen tip portion 1a is recognized based on the plurality of pieces of entry information 20 acquired from the electronic pen 1A. A distance (path) D on the ground surface corresponding to the trace (handwriting) traced by the map area 100 is calculated and transmitted to the audio output means 33 (speaker) and also stored in the information storage means 30.

  The distance calculation means 32 causes the sound output means 33 to notify the calculated distance (distance) D on the ground surface by sound. As an example of the guidance message by the voice output means 33, “the distance from the departure place to the destination is OO km” can be cited. Further, the distance (distance) D on the ground surface calculated by the distance calculation means 32 is displayed on the display means 34.

  The terminal device 3 includes the above-described units by installing a dedicated application for stroke processing.

[Dedicated application]
Next, the dedicated application (program) 4 installed in the terminal device 3 will be described with reference to FIG. FIG. 8 shows a module configuration of the dedicated application 4. The dedicated application 4 executes predetermined processing based on the entry information 20 regarding the route traced by the electronic pen 1A through the dedicated paper 2A, and is installed in the terminal device 3 in advance by downloading or the like. The dedicated application 4 is associated with the dedicated paper 2A, and the dedicated application 4 operates when the terminal device 3 receives the entry information 20 by filling in the dedicated paper 2A with the electronic pen 1A.

  As shown in FIG. 8, the dedicated application 4 includes a data communication module 41, an information storage module 42, and a distance calculation module 43.

  The data communication module 41 has a function of receiving the entry information 20 from the electronic pen 1A, and is a module that causes the terminal device 3 to configure the data communication means 31.

  The information storage module 42 holds the scale value of the map drawn in the map area 100 in correspondence with the dot pattern address 22 in the map area 100, and the entry information 20 acquired from the electronic pen 1A and the distance calculation means 32 is a module for storing the trajectory (handwriting) length L calculated by 32 and the distance (path) D on the ground surface in the memory, and is a module for configuring the information storage means 30 in the terminal device 3.

  The distance calculation module 43 refers to the plurality of entry information 20, determines a route along the coordinate data 23, obtains the length L of the route, and further associates it with the dot pattern address 22 of the entry information 20. The scale value is read out from the information storage means 30, the distance (path) D on the ground surface is calculated with reference to the scale value, and the voice output means 33 is notified of the distance D on the ground surface by voice. This is a module for configuring the distance calculation means 32 in the terminal device 3.

[Distance calculation processing by terminal device]
Next, distance calculation processing performed by the terminal device of the present embodiment will be described with reference to FIGS. 9 and 10. FIG. 9 is a diagram showing the dedicated paper 2A with handwriting traced with the electronic pen 1A. FIG. 10 is a flowchart of distance calculation.

  Here, the distance calculation processing in the present embodiment is the distance (distance) on the ground surface in the traced path from when the user brings the electronic pen 1A into contact with the map area 100 of the dedicated paper 2A until it is released. This is a process for calculating D and notifying the result.

  As shown in FIG. 9, the user contacts (pens down) a starting point (contact start point) 701 on the map area 100 of the dedicated paper 2A with the pen tip 1a of the electronic pen 1A. Then, the electronic pen 1A detects contact with the map area 100 when the writing pressure detected by the pressure sensor 16 is equal to or higher than a predetermined value (step S1), and the camera 15 irradiates infrared rays with the LED 14. The dot pattern is imaged, and the processor 11 calculates the coordinate data 23 and the dot pattern address 22 at the contact position to the map area 100 from the image data of the captured dot pattern (step S2). Then, the processor 11 acquires the entry information 20 in which the time information 21 indicating the current time transmitted by the clock 18, the dot pattern address 22, the coordinate data 23, and the writing pressure data 24 are associated (step S <b> 3). Furthermore, the electronic pen 1A transmits the entry information 20 to the terminal device 3 (step S4).

  If the user keeps tracing the route desired by the user with the pen tip 1a of the electronic pen 1A in contact with the map area 100, the electronic pen 1A is not separated from the map area 100 (step S5; No). Then, the process proceeds to step S2, and steps S2 to S5 are repeated according to the image data of the dot pattern imaged by the camera 15 at a predetermined interval (for example, 75 times per second). That is, the electronic pen 1A acquires the coordinate data 23 and the dot pattern address 22 of each point (passing points 702A, 702B, 702C, 702D,...) Of the route (step S2), and the coordinate data 23 as described above. Etc. (step S3), and the entry information 20 is transmitted to the terminal device 3 (step S4). Then, the user finishes tracing the route from the departure point to the destination, and at the end point 703, the electronic pen 1A is detached (pen-up) from the dedicated paper 2A. Then, when the electronic pen 1A detects that the pen pressure by the pressure sensor 16 has become less than a predetermined value, and detects that the pen is away from the map area 100 (step S5; Yes), the processing is terminated.

  In this manner, the electronic pen 1A transmits the entry information 20 to the terminal device 3 immediately and sequentially while contacting the dedicated paper 2A. Here, “immediately” means that when the electronic pen 1A generates the entry information 20, the entry information 20 is immediately transmitted to the terminal device 3 and acquired by the terminal device 3. Means that while the electronic pen 1 </ b> A continuously acquires the entry information 20, the entry information 20 is sequentially transmitted to the terminal device 3 and acquired by the terminal device 3.

  The data communication means 31 of the terminal device 3 receives the entry information 20 immediately and sequentially from the electronic pen 1A. As a result, when the user traces the map area 100 of the dedicated paper 2A with the electronic pen 1A, the terminal device 3 displays the coordinate data 23 corresponding to the dot pattern under the path traced by the electronic pen 1A in real time in chronological order. get. When the data communication unit 31 receives the entry information 20 from the electronic pen 1A, the data communication unit 31 stores the entry information 20 in the information storage unit 30 and transmits it to the distance calculation unit 32 (step S11).

  When the user removes the electronic pen 1A from the map area 100 and the pressure sensor 16 recognizes the pen up, the entry information 20 is not transmitted from the electronic pen 1A. Since the entry information 20 is not received, the distance calculation unit 32 recognizes the pen up of the electronic pen 1A (step S12), and the distance calculation unit 32 writes the handwriting on the map area 100 based on the X and Y coordinate data. Is calculated (steps S13 to S16). Specifically, a plurality of coordinate data is divided into sections so that monotonous increase or monotonic decrease of the X coordinate continues in time series order (step S13), and then an angle formed by three consecutive coordinate points is obtained. The section is further divided at coordinate points where the angle is less than the threshold (90 degrees) (step S14). Then, an interpolation function such as a spline function or a Lagrangian function is applied to each section to obtain an interpolation function (step S15). Subsequently, the line integral value of the interpolation function is obtained in each section, and the integral values are further integrated to obtain the handwriting length L (step 16). Further, the distance calculation means 32 reads the scale value c corresponding to the dot pattern address with reference to the scale information stored in the information storage means 30 based on the dot pattern address, and the handwriting length L and the scale value c. Then, the distance (distance) D on the ground surface is calculated (step S17).

  Usually, the dot pattern address is the same for each type or page of the dedicated paper 2A, and the dot pattern address obtained in step S2 does not change. Therefore, the dot pattern address may be obtained only once, The dot pattern address may be obtained repeatedly, and when the dot pattern address has changed for some reason, it may be transmitted to the distance calculation means 32. In addition, as long as the dot pattern address does not change, the distance calculation means 32 refers to the scale information and acquires the scale value only once.

  Then, after the electronic pen 1A leaves the map area 100, the distance (distance) D on the ground surface is calculated based on the obtained coordinate data 23 and the scale value c. The voice output means 33 causes the voice output means 33 to notify the voice output means 33 of the distance (distance) D on the ground surface from the contact start point 701 to the end point 703 determined by the distance calculation means 32, or display means. 34 is displayed (step S18). This completes the distance calculation.

  As described above, when the user traces the electronic pen 1A along the desired route on the map area 100, the electronic pen 1A calculates a plurality of position coordinates along the traced route. Based on the position coordinates, the distance (path) D on the surface of the route on the map can be notified via the audio output means 33 and the display means 34 of the terminal device 3.

  Here, the details of the distance calculation of the distance calculation means 32 in the processing of steps S13 to S16 will be described with reference to FIGS. Here, the coordinate points of the coordinate data 23 are t (0), t (1),... In time series as shown in FIG.

  First, a plurality of coordinate data 23 in time series order are divided into sections so that the monotonous increase or monotonic decrease of the X coordinate continues (step S13). As shown in FIG. 12, the X coordinate increases monotonically from t (0) to t (5), the X coordinate decreases monotonously from t (5) to t (11), and the X coordinate increases monotonously from t (11) Therefore, the coordinate points t (5) and t (11) are set as the boundaries of the section division.

  Next, as shown in FIG. 13, coordinate points t (0), t (1),... T (k-2), t (k-1), t (k), t (k + 1),. In contrast, the angles θ (1),... Θ (k-1), θ (k), θ (k + 1), θ (k + 2),. Find the smaller corner. Of these angles θ (1),... Θ (k-1), θ (k), θ (k + 1), θ (k + 2),... The coordinate point corresponding to is extracted and set as a boundary of section division (step S14). Here, since the angle formed by the coordinate points t (15) and t (19) is less than 90 degrees, the coordinate points t (15) and t (19) are extracted, and these are used as the boundary of the section division. . The threshold angle may be changed as appropriate.

Therefore, the coordinate points are divided into t (0) to t (5), t (5) to t (11), t (11) to (15), t (15) to (19), and t (19) to Is done. As shown in FIG. 14, each section divided into these sections is
D (0): t (0) to t (5)
D (1): t (5) to t (11)
D (2): t (11) to (15)
D (3): t (15) to (19)
D (4): t (19) ~
And

  Then, spline interpolation is performed for each section (step S15). Spline interpolation is applied to each section D (m) using the coordinate points in the section, and the obtained spline functions are represented by F0 (x), F1 (x),..., Fm− as shown in FIG. 1 (x), Fm (x), Fm + 1 (x),.

Then, the length L of the traced trace is
Xmax (m): Maximum value of X coordinate in section D (m) Xmin (m): Minimum value of X coordinate in section D (m) mmax: Maximum value of m when sections are divided It is represented by

  In this way, by performing line integration using an interpolation function in each section and integrating each integral value, a more accurate path closer to the actually drawn locus can be obtained. In addition to the spline interpolation, various interpolation functions such as Lagrangian interpolation can be applied as the interpolation function.

[Operational effects of the system using the terminal device of the first embodiment]
According to the system using the terminal device 3, when the user traces the map area 100 with the electronic pen 1A, the electronic pen 1A calculates the coordinates on the traced path at predetermined intervals, and includes the coordinates. The entry information 20 is generated, and the entry information 20 is transmitted to the terminal device 3 immediately and sequentially. Then, the terminal device 3 acquires the entry information 20 from the electronic pen 1A, determines a locus (handwriting) based on the coordinate data 23 of the entry information 20, and calculates the length L of the locus. The scale value c is referred to, and a distance (path) D on the ground surface is calculated. In this case, the distance calculation means 32 enables the application of the interpolation by the interpolation function, and receives the plurality of position coordinates of the coordinate data 23 received by the data communication means 31 and calculated by the electronic pen 1A along the handwriting. Divide the interval so that the monotonous increase or decrease of the X coordinate continues in time series order, and further divide the interval so that the angle formed by three consecutive points does not become less than the threshold angle, and then interpolate with an interpolation function for each interval , The handwriting is reproduced with a smooth curve by the applied interpolation function, the line integral of each interpolation function is calculated, and the integrated value is obtained to obtain the length L of the handwriting with high accuracy. Then, the distance D is notified by the sound output means 33 to the display means 34. As described above, the terminal device 3 acquires the entry information 20 including the coordinate data 23 calculated along the route traced by the electronic pen 1A, and thus the trajectory (based on the coordinate data 23 of the entry information 20 ( The handwriting) is determined, and the terminal device 3 can calculate the length L of the locus (handwriting) and notify the user by voice or the like. Thereby, even when there are a plurality of routes from the departure point to the destination, the user can easily know the distance for each route by the system using the terminal device 3.

Second Embodiment
Next, a second embodiment will be described. In the second embodiment, the electronic pen 1B (1) shown in FIG. 15 is used, and transmission in which a dot pattern associated with data transmission processing from the electronic pen 1B to the terminal device 3 shown in FIG. The dedicated paper 2B (2) having the area 110 is used. In the second embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted as appropriate.

  The difference between the second embodiment and the first embodiment is that, in the first embodiment, the electronic pen 1A immediately enters the entry information 20 while the user enters a route to the map area 100 with the electronic pen 1A. In contrast to the second embodiment, the user is routed to the map area 100 with the electronic pen 1B. The electronic pen 1B stores the entry information 20 generated along the entered route in the memory 19, and the user transmits the dedicated paper 2B after completing the entry of the route. By filling a check mark or a tap with the electronic pen 1B in the area 110, the entry information 20 is collectively transmitted from the electronic pen 1B to the terminal device 3, and the terminal device 3 collectively calculates the trajectory to obtain the path D. In the point. Therefore, the electronic pen 1B of the second embodiment includes a memory 19 for storing entry information 20 as shown in FIG.

  In the second embodiment, when the user traces the map area 100 of the dedicated paper 2B shown in FIG. 3, the electronic pen 1B reads the dot pattern along the traced path (handwriting) and sequentially calculates the coordinate data 23. Then, the entry information 20 including the coordinate data 23 is stored in the memory 19.

  The processor 11 of the electronic pen 1B stores in the memory 19 the data communication unit 12 in the memory 19 when the entry information 20 based on the handwriting in the transmission area 110 is obtained in the calculation of the coordinate data from the image data of the dot pattern. It has a function of sending the entered entry information 20 together to the terminal device 3. Therefore, when the user finishes entering the route to the map area 100 with the electronic pen 1B and touches the transmission area 110 with the electronic pen 1B, the electronic pen 1B transmits the entry information 20 stored in the memory 19 to the terminal device 3. To do.

  Then, the terminal device 3 reads and specifies the scale value of the map area 100 on the dedicated paper 2B from the information storage means 30 based on the dot pattern address 22 included in the entry information 20 received from the electronic pen 1B, and starts. By calculating the length L of the trajectory (handwriting) from the point 701 to the end point 703, the distance (path) D on the ground surface is calculated, and the distance D on the ground surface is notified by the audio output means 33.

[Distance calculation processing by terminal device]
Next, distance calculation processing performed by the terminal device of the second embodiment will be described with reference to FIGS. 17 and 18. FIG. 17 is a diagram illustrating the dedicated paper 2B with handwriting traced with the electronic pen 1B. FIG. 18 is a flowchart of distance calculation in the electronic pen 1B.

  As shown in FIG. 17, the user contacts the start point 701 of the route desired by the user in the map area 100 of the dedicated paper 2 </ b> B by the pen tip 1 a of the electronic pen 1 </ b> B. Then, the electronic pen 1B detects contact with the map area 100 when the writing pressure detected by the pressure sensor 16 is equal to or greater than a predetermined value (step S21), and the camera 15 irradiates infrared rays with the LED 14. The dot pattern is imaged, and the processor 11 calculates the coordinate data 23 and the dot pattern address 22 at the contact position with the map area 100 from the image data of the captured dot pattern (step S22). Then, the electronic pen 1B acquires the entry information 20 that associates the time information 21, the dot pattern address 22, the coordinate data 23, and the writing pressure data 24 indicating the current time transmitted by the clock 18 (step S23). The completed entry information 20 is stored in the memory 19 (step S24). Next, when the user keeps tracing the route desired by the user in a state where the pen tip portion 1a of the electronic pen 1B is in contact with the map area 100, the electronic pen 1B displays the entry information 20 based on the handwriting in the transmission area 110. Since it is not acquired (step S25; No), the process proceeds to step 2, and coordinate data of each point (passing points 702A, 702B, 702C, 702D,...) Is continuously provided at a predetermined interval (for example, 75 times per second). 23 is calculated and entry information 20 is generated, and the entry information 20 is stored in the memory 19.

  When the user moves the electronic pen 1B away from the map area 100 at the end point 703 of the route and then contacts the transmission area 110 with the electronic pen 1B (step S25; Yes), the electronic pen 1B is held in the memory 19. The entry information 20 is collectively transmitted to the terminal device 3 (step S26).

  The data communication unit 31 in the terminal device 3 receives the entry information 20 transmitted by the electronic pen 1B, stores the entry information 20 in the information storage unit 30, and transmits it to the distance calculation unit 32 (step S31).

  The distance calculation means 32 calculates the length of the handwriting on the map area 100 based on the X and Y coordinate data of the entry information 20 (steps S32 to S36). The calculation procedure of steps S32 to S36 is the same as the procedure described in steps S13 to S17 in the first embodiment. That is, a plurality of coordinate data is divided into sections so that monotonous increase or monotonic decrease of the X coordinate continues in time series order (step S32), and then an angle formed by three consecutive coordinate points is obtained, Further sections are divided by coordinate points that are less than the threshold (90 degrees) (step S33). Then, an interpolation function such as a spline function or a Lagrangian function is applied to each section to obtain an interpolation function (step S34). Subsequently, the line integral value of the interpolation function is obtained in each section, and the integral values are further accumulated to obtain the handwriting length L (step 35). Further, the distance calculation means 32 can read the scale value c corresponding to the dot pattern address by referring to the scale information stored in the information storage means 30 based on the dot pattern address, and the length L and the scale of the handwriting. From the value c, the distance (distance) D on the ground surface is calculated (step S36).

  In the second embodiment, when the user traces the map area 100 with the electronic pen 1B, the electronic pen 1B calculates the coordinate data 23 on the traced route at a predetermined interval, and includes the coordinate data 23. Information 20 is generated and stored in the memory 19. Then, when the user brings the electronic pen 1 </ b> B into contact with the transmission area 110, the electronic pen 1 </ b> B collectively transmits the entry information 20 to the terminal device 3. Then, the terminal device 3 acquires the entry information 20 from the electronic pen 1B, determines the locus (handwriting) based on the coordinate data 23 of the entry information 20, and calculates the length L of the route. With reference to the scale value c, the distance (distance) D on the ground surface is calculated. In this way, the terminal device 3 acquires the entry information 20 including the coordinate data 23 calculated along the route traced by the electronic pen 1B, and thus the trajectory (based on the coordinate data 23 of the entry information 20 ( The terminal device 3 can calculate the distance D on the ground surface in an arbitrary route traced by the user with the electronic pen 1B by calculating the length L of the locus (handwriting). .

  Then, after calculating the distance (distance) D on the ground surface, the distance calculation means 32 supplies the sound output means 33 with the distance (distance) D on the ground surface from the contact start point 701 to the end point 703 determined by calculation. It is notified by voice or displayed on the display means 34 (step S37). This completes the distance calculation.

  Here, the details of the distance calculation of the distance calculation means 32 in the processes of steps S32 to S35 are the same as the processes of steps S13 to S16 described with reference to FIGS. 11 to 14 in the first embodiment.

[Operational effects of the system using the terminal device of the second embodiment]
According to the system using the terminal device 3, when the user traces the map area 100 with the electronic pen 1B, the electronic pen 1B calculates coordinates on the traced path at predetermined intervals and includes the coordinates. The entry information 20 is generated and stored in the memory 19. Then, when the user brings the electronic pen 1 </ b> B into contact with the transmission area 110, the electronic pen 1 </ b> B collectively transmits the entry information 20 to the terminal device 3. Then, the terminal device 3 acquires the entry information 20 from the electronic pen 1B, determines a locus (handwriting) based on the coordinate data 23 of the entry information 20, and calculates the length L of the locus, With reference to the scale value c, the distance (distance) D on the ground surface is calculated. In this case, the distance calculation means 32 enables the application of the interpolation by the interpolation function, and receives the plurality of position coordinates of the coordinate data 23 received by the data communication means 31 and calculated by the electronic pen 1B along the handwriting. Divide the interval so that the monotonous increase or decrease of the X coordinate continues in time series order, and further divide the interval so that the angle formed by three consecutive points does not become less than the threshold angle, and then interpolate with an interpolation function for each interval , The handwriting is reproduced with a smooth curve by the applied interpolation function, the line integral of each interpolation function is calculated, and the integrated value is obtained to obtain the length L of the handwriting with high accuracy. Then, the distance D is notified by the sound output means 33 to the display means 34. In this way, the terminal device 3 acquires the entry information 20 including the coordinate data 23 calculated along the route traced by the electronic pen 1B, and thus the trajectory (based on the coordinate data 23 of the entry information 20 ( The handwriting) is determined, and the terminal device 3 can calculate the length L of the locus (handwriting) and notify the user by voice or the like. Thereby, even when there are a plurality of routes from the departure point to the destination, the user can easily know the distance for each route by the system using the terminal device 3.

<Third Embodiment>
Next, a third embodiment will be described with reference to FIG. The third embodiment is the same as the first embodiment and the second embodiment except that the method of dividing the section is different from the first embodiment and the second embodiment. FIG. 19 is a flowchart showing a modification of the section division performed in steps S13 and S14 in the flowchart of FIG. 10 and steps S32 and S33 in the flowchart of FIG.

  In the third embodiment, in the time-series data of the position coordinates of the coordinate data 23 in the entry information 20, the monotonic increase or decrease of the X coordinate continues, and the angle formed by the three consecutive points is less than the threshold angle. Divide into sections by judging from both viewpoints.

  Subsequent to step S12 in FIG. 10 or system S31 in FIG. 18, the section dividing process shown in FIG. 19 is started. First, an initial value 0 (n = 0) is assigned to n for dividing the coordinate data into sections (step S41). Then, it is determined whether the X coordinate (n = 0) of three consecutive coordinate points t (n), t (n + 1), t (n + 2) is monotonically increasing or monotonically decreasing (step S42). If yes, the angle formed by the coordinate points t (n), t (n + 1), t (n + 2) is obtained (step S43), and it is determined whether the angle is less than the threshold (step S44). In the case of yes, the coordinate point t (n + 1) is set as the boundary of the section (step S45). On the other hand, if the X coordinate of the three consecutive coordinate points t (n), t (n + 1), t (n + 2) is neither monotonously increasing nor monotonically decreasing (No) in step S42, it tends to increase or decrease. Therefore, the process proceeds to step S45, and the coordinate point t (n + 1) is set as the boundary of the section.

  In step S44, it is determined whether the coordinate point t (n + 2) is the end point (step S46) in both cases where the angle formed is not less than the threshold value (no) and after step S45. ), In the case of yes, the section division ends. In the case of No, n is incremented by 1 (step S47: n = n ++), and the three consecutive points to be judged for the validity of the section division are replaced with the next newest one except the oldest one in the time series. The procedure of steps S42 to S46 is repeated by setting one new point to three new points. When processing is performed up to the end of the coordinate points in time series order by this procedure (step S46: Yes), the section division is finished. When the section division is completed, the process returns to FIG. 10 or 18 and proceeds to step S15 in FIG. 10 or step S34 in FIG. By this method, it is possible to simultaneously determine and process the section division in which the monotonous increase or decrease of the X coordinate is continuous and the angle formed by the three consecutive points is not less than the threshold angle.

[Operational effects of the system using the terminal device of the third embodiment]
According to the system using the terminal device 3, the length L of the handwriting can be obtained with high accuracy as in the system using the terminal device 3 of the first and second embodiments. That is, during the calculation in the distance calculation means 32, in addition to dividing the section so that the monotonous increase or decrease of the X coordinate continues in time series order with respect to the plurality of position coordinates of the coordinate data 23, three consecutive three Even if the coordinate point between two coordinate points is less than the threshold, the handwriting can be reproduced with a smoother curve by the applied interpolation function.

  Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.

  In the above embodiment, section division is performed as a section boundary even at a coordinate point where the angle formed by three consecutive coordinate points is less than the threshold value. However, this is omitted, and the monotonous increase or decrease of the X coordinate continues. After dividing into sections, an interpolation function may be obtained by applying interpolation to each section. Even in this case, it is possible to obtain a spline function or a Lagrangian function, which is sufficient when it is not assumed that a road having a steep bend is assumed.

  In the above embodiment, the distance calculation means 32 refers to the scale information in order to trace the route to the map area 100 and obtain the distance (path) D on the ground surface. (Distance) If instead of obtaining D, but simply obtaining the length traced on the dedicated paper 2B, the distance calculation means 32 calculates the length of the line integral without referring to the scale information, You may make it make it output with an audio | voice output means with an audio | voice.

  In the above embodiment, the distance calculation unit 32 acquires the scale information from the information storage unit 30 prior to the calculation of the length L of the trajectory (handwriting), but after calculating the length L of the trajectory. Scale information may be acquired.

  In the above embodiment, if the coordinate data 23 included in the entry information 20 received by the data communication unit 31 is the same continuously, the second and subsequent entry information 20 among the entry information 20 of the same coordinate data 23. May not be stored in the information storage means 30, and the distance calculation means 32 may not be added to the calculation of the length of the trajectory. Thereby, the processing burden of the terminal device 3 can be reduced. Similarly, in the electronic pen 1B of the second embodiment, if the coordinate data included in the acquired entry information 20 is continuously the same, the second and subsequent pieces of entry information 20 of the same coordinate data 23 are the same. The entry information 20 may not be stored in the memory 19.

  In the above embodiment, the electronic pen 1 having an ink cartridge is used. However, a pen type scanner without an ink cartridge may be used.

  Further, property information (pen information or pen owner information) relating to the pen itself or its owner may be held in the electronic pen 1 so that it can be referred to from the terminal device 3 or property information. May be transmitted to the terminal device 3 together with the entry information. The pen information includes battery level, pen ID, pen manufacturer number, pen software version, subscription provider ID, free memory capacity, and the like. The pen owner information includes nationality, language, time zone, e-mail address, name, address, fax / phone number, mobile phone number, and the like.

  Further, in the above embodiment, the dots are ink containing carbon that absorbs infrared rays, the LEDs 14 of the electronic pen 1 are LEDs that irradiate infrared rays, and the dot pattern of the electronic pen 1 is changed by the difference in the amount of reflected infrared rays by the camera 15. However, it is not limited to this. For example, the dot is ink that emits light of a predetermined wavelength by light of a predetermined wavelength, the LED 14 of the electronic pen 1 is irradiated with light that emits the ink of the dot, and the region of the wavelength that the ink of the dot is emitted by the camera 15 is set. By detecting the dot pattern, the electronic pen 1 may read the dot pattern. If the dot pattern can be read by the camera 15, the ink type of the dot and the irradiation light of the LED 14 are limited to those shown in the above embodiment. I can't. Further, as long as the position coordinates on the dedicated paper 2 can be specified, another coded pattern such as a two-dimensional code pattern may be used instead of the dot pattern.

  The present invention provides a map for mountain climbing, a map application such as a town map, an architectural application such as a architectural sketch, a design drawing, a maze quiz for competing for the shortest distance of the route traced to the goal, and the like. Can be applied.

It is a system configuration diagram using the terminal device of the present invention. It is a top view which shows an example of the exclusive paper used in 1st Embodiment. It is explanatory drawing of the expression method of the information by the dot pattern printed on the exclusive paper. 6 is a diagram for explaining a method of expressing information by a dot pattern printed on dedicated paper 2. FIG. It is explanatory drawing which shows typically the electronic pen used in 1st Embodiment. It is a conceptual diagram which shows the structure of entry information. It is a functional block diagram of the terminal device used by 1st Embodiment. It is a module block diagram of the exclusive application in 1st Embodiment. It is a figure which shows the exclusive paper of FIG. 2 with the handwriting traced with the electronic pen. It is a flowchart of the distance calculation in 1st Embodiment. It is explanatory drawing of the 1st step of the arithmetic processing performed with a distance calculating means. It is explanatory drawing of the 2nd step of the arithmetic processing performed by a distance calculating means. It is explanatory drawing of the 3rd step of the arithmetic processing performed with a distance calculating means. It is explanatory drawing of the 4th step of the arithmetic processing performed with a distance calculating means. It is explanatory drawing which shows typically the electronic pen used in 2nd Embodiment. It is a top view which shows an example of the exclusive paper used in 2nd Embodiment. It is a figure which shows the exclusive paper of FIG. 16 with the handwriting traced with the electronic pen. It is a flowchart of the distance calculation in 2nd Embodiment. It is a flowchart of section division of distance calculation in a 3rd embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1,1A, 2A ... Electronic pen, 1a ... Pen tip part, 11 ... Processor, 12 ... Data communication unit, 13 ... Battery, 14 ... LED, 15 ... CMOS camera, 16 ... Pressure sensor, 17 ... Ink cartridge, 18 ... Clock, 19 ... Memory, 2, 2A, 2B ... Dedicated paper (medium), 20 ... Entry information, 21 ... Time information, 22 ... Dot pattern address, 23 ... Coordinate data, 24 ... Pen pressure data, 3 ... Terminal device, DESCRIPTION OF SYMBOLS 30 ... Information storage means, 31 ... Data communication means, 32 ... Distance calculation means, 33 ... Audio | voice output means, 34 ... Display means, 4 ... Dedicated application, 41 ... Data communication module, 42 ... Information storage module, 43 ... Distance calculation Module, 100 ... Map area, 110 ... Transmission area, 701 ... Starting point, 702A, 702B, 702C, 702D ... Passing point, 03 ... the end point.

Claims (10)

A terminal device that receives discrete coordinate data calculated by reading a coded pattern printed on a medium from an electronic pen or a scanner, and calculates a distance according to the length of the handwriting from the coordinate data,
Data communication means for receiving coordinate data;
A plurality of position coordinates of the coordinate data received by the data communication means and calculated by the electronic pen or the scanner along the handwriting so that the X coordinate monotonically increases or decreases continuously in time series order. A terminal apparatus comprising: a distance calculation unit that divides a section and interpolates with an interpolation function for each section and calculates a distance according to a handwriting based on a line integral value of each interpolation function. A terminal device that receives discrete coordinate data calculated by reading a coded pattern printed on a medium from an electronic pen or a scanner, and calculates a distance according to the length of the handwriting from the coordinate data,
Data communication means for receiving coordinate data;
A plurality of position coordinates of the coordinate data received by the data communication means and calculated by the electronic pen or the scanner along the handwriting so that the X coordinate monotonically increases or decreases continuously in time series order. And after dividing into sections so that the angle formed by three consecutive points does not become less than the threshold angle, the interpolation function is interpolated for each section, and the distance corresponding to the handwriting is calculated based on the line integral value of each interpolation function. A terminal device comprising a distance calculating means for calculating. A path indicated by handwriting on the map area from the coordinate data received from the electronic pen or scanner by reading the coded pattern of the medium on which the map area and the coded pattern are printed. A terminal device for calculating a distance on the ground surface corresponding to
Data communication means for receiving coordinate data;
A plurality of position coordinates of the coordinate data received by the data communication means and calculated by the electronic pen or the scanner along the handwriting so that the X coordinate monotonically increases or decreases continuously in time series order. After dividing into sections, interpolating with an interpolation function for each section, and having a distance calculation means for calculating a distance on the ground surface corresponding to the handwriting on the map area based on the line integral value of each interpolation function Characteristic terminal device. A path indicated by handwriting on the map area from the coordinate data received from the electronic pen or scanner by reading the coded pattern of the medium on which the map area and the coded pattern are printed. A terminal device for calculating a distance on the ground surface corresponding to
Data communication means for receiving coordinate data;
A plurality of position coordinates of the coordinate data received by the data communication means and calculated by the electronic pen or the scanner along the handwriting so that the X coordinate monotonically increases or decreases continuously in time series order. In addition, after dividing into sections so that the angle formed by three consecutive points does not become less than the threshold angle, interpolation is performed with an interpolation function for each section, and the handwriting on the map area based on the line integral value of each interpolation function And a distance calculating means for calculating a distance on the ground surface corresponding to the terminal.   The terminal device according to claim 1, wherein the interpolation function is a spline function or a Lagrangian function. The terminal device according to claim 1, further comprising: an audio output unit that notifies the distance calculated by the distance calculation unit. A program executed by a computer that receives discrete coordinate data calculated by reading a coded pattern printed on a medium from an electronic pen or scanner and calculates a distance corresponding to the length of the handwriting from the coordinate data. There,
Data communication means for receiving coordinate data;
A plurality of position coordinates of the coordinate data received by the data communication means and calculated by the electronic pen or the scanner along the handwriting so that the X coordinate monotonically increases or decreases continuously in time series order. A program which causes the computer to function as distance calculation means for dividing a section and interpolating with an interpolation function for each section and calculating a distance corresponding to a handwriting based on a line integral value of each interpolation function. A program executed by a computer that receives discrete coordinate data calculated by reading a coded pattern printed on a medium from an electronic pen or scanner and calculates a distance corresponding to the length of the handwriting from the coordinate data. There,
Data communication means for receiving coordinate data;
A plurality of position coordinates of the coordinate data received by the data communication means and calculated by the electronic pen or the scanner along the handwriting so that the X coordinate monotonically increases or decreases continuously in time series order. And after dividing into sections so that the angle formed by three consecutive points does not become less than the threshold angle, the interpolation function is interpolated for each section, and the distance corresponding to the handwriting is calculated based on the line integral value of each interpolation function. A program for causing the computer to function as a distance calculating means for calculating. A path indicated by handwriting on the map area from the coordinate data received from the electronic pen or scanner by reading the coded pattern of the medium on which the map area and the coded pattern are printed. Is a program executed by a computer that calculates the distance on the surface corresponding to
Data communication means for receiving coordinate data;
A plurality of position coordinates of the coordinate data received by the data communication means and calculated by the electronic pen or the scanner along the handwriting so that the X coordinate monotonically increases or decreases continuously in time series order. After dividing into sections, the computer functions as a distance calculation means for performing interpolation with an interpolation function for each section and calculating a distance on the ground surface corresponding to a handwriting on the map area based on a line integral value of each interpolation function. A program characterized by letting A path indicated by handwriting on the map area from the coordinate data received from the electronic pen or scanner by reading the coded pattern of the medium on which the map area and the coded pattern are printed. Is a program executed by a computer that calculates the distance on the surface corresponding to
Data communication means for receiving coordinate data;
A plurality of position coordinates of the coordinate data received by the data communication means and calculated by the electronic pen or the scanner along the handwriting so that the X coordinate monotonically increases or decreases continuously in time series order. In addition, after dividing into sections so that the angle formed by three consecutive points does not become less than the threshold angle, interpolation is performed with an interpolation function for each section, and the handwriting on the map area based on the line integral value of each interpolation function A program for causing the computer to function as a distance calculation means for calculating a distance on the ground surface corresponding to.

Images