JP4873376B2 - 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 Patent Application Laid-Open No. 7-121698 (Patent Document 5) discloses a method of approximating sampling of handwritten data with a spline curve so that the maximum separation distance from the data does not exceed a preset threshold value. ing. That is, if the maximum distance between the curve and the data subjected to the spline interpolation is equal to or greater than a threshold value, the data giving the distance is newly added as a node, and the spline interpolation is performed.

Japanese translation of PCT publication No. 2003-511761 JP 2004-153612 A JP 2004-46424 A Japanese Patent Publication No. 3-50283 Japanese Patent Laid-Open No. 7-121698

  However, the above-described geographical information providing system calculates the shortest straight path from the departure point to the destination 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 routes other than the shortest straight route, there is a problem in that it cannot always 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 a length between input coordinate values.

  Further, when calculating the distance of the route drawn on the map, if only the spline function is used as an approximate curve exclusively as in Patent Document 5, it is drawn depending on the degree of density of the data to be interpolated. There is a problem that the reproducibility of the trajectory of the route may be low.

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

Terminal device according to the present invention receives a discrete coordinate data calculated by reading the printed coded pattern on the medium at predetermined time intervals from the electronic pen or wand, the length of the trajectories from the coordinate data a terminal device for calculating the distance according to the, and data communication means for receiving the coordinate data, said received by the data communication means, which is calculated by said along said trajectories electronic pen or the pen type scanner A plurality of position coordinates of the coordinate data are divided into sections so that the monotonous increase or decrease of the X coordinate continues in the read time-series order, and then interpolation is performed with a plurality of types of interpolation functions for each section. The area enclosed by the line segment connecting the position coordinates with a straight line and the curve obtained by various interpolation functions was calculated, and the interpolation function with the smallest area among those areas was adopted and adopted. Calculating a line integral value of the interpolation function, characterized by comprising a distance calculating means for calculating a distance corresponding to the trajectories by adding the line integral values for each interpolation function is employed.

According to this configuration, in a state where the user is in contact with the medium by the electronic pen or wand and moves over fill or medium medium, electronic pen or wand is discrete along the moving locus Coordinate data is calculated and transmitted to the terminal device. In the terminal device, the data communication means receives the coordinate data transmitted from the electronic pen or the pen-type scanner, and the distance calculation means is received by the data communication means in order to enable application of interpolation by an interpolation function, a plurality of position coordinates of the coordinate data calculated by the electronic pen or wand along the trajectories, the time in chronological order in terms of monotonically increasing or decreasing the X coordinate and segmentation to be continuous, for each section Interpolate with multiple types of interpolation functions, calculate the area enclosed by the line segment connecting each position coordinate with a straight line and the curve obtained by various interpolation functions, and choose the interpolation function of the smallest area among those areas adopted, it calculates the line integral values for each interpolation function is employed to calculate a distance corresponding to the trajectories by adding the line integral values for each interpolation function is employed. Accordingly, when the user enters desired characters or line segments with an electronic pen or a pen-type scanner, the terminal device can accurately calculate the distance according to the handwriting.

Or, the terminal apparatus according to the present invention receives a discrete coordinate data calculated by reading the coded pattern printed on the medium at predetermined time intervals from the electronic pen or wand, trajectories from the coordinate data a terminal device for calculating a distance corresponding to the length of, operations and data communication means for receiving the coordinate data, received by said data communication means, by the electronic pen or the wand along the trajectories A plurality of position coordinates of the coordinate data that have been read so that the monotonous increase or decrease of the X coordinate continues in the time-series order read , and the angle formed by the three consecutive points is not less than the threshold angle. After sectioning, each section is interpolated with multiple types of interpolation functions, and the area enclosed by the line segment connecting each position coordinate with a straight line and the curves obtained by various interpolation functions is calculated. Adopts an interpolation function of the smallest area among their areas, and calculating the line integral values for each interpolation function is employed, the distance calculating means for calculating a distance corresponding to the trajectories by summing each line integral value It is characterized by providing.

According to this configuration, in a state where the user is in contact with the medium by the electronic pen or wand and moves over fill or medium medium, electronic pen or wand is discrete along the moving locus Coordinate data is calculated and transmitted to the terminal device. In the terminal device, the data communication means receives the coordinate data transmitted from the electronic pen or the pen-type scanner, and the distance calculation means is received by the data communication means in order to enable application of interpolation by an interpolation function, a plurality of position coordinates of the coordinate data calculated by the electronic pen or wand along the trajectories, as monotonically increasing or decreasing the X coordinate chronological order in the continuous and forms a continuous three-point The sections are divided so that the angle does not become less than the threshold angle, and each section is interpolated with multiple types of interpolation functions, and each position coordinate is surrounded by straight lines and curves obtained by various interpolation functions. the area was calculated, employing the interpolation function of the smallest area among those areas, it calculates the line integral values for each interpolation function is employed, depending on the trajectories by summing each line integral value Distance to calculate the. Accordingly, when the user enters desired characters or line segments with an electronic pen or a pen-type scanner, the terminal device can accurately calculate the distance according to the handwriting.

Or, the terminal apparatus according to the present invention receives a discrete coordinate data calculated by reading the coded pattern printed on the medium at predetermined time intervals from the electronic pen or wand, trajectories from the coordinate data a terminal device for calculating a distance corresponding to the length of, operations and data communication means for receiving the coordinate data, received by said data communication means, by the electronic pen or the wand along the trajectories A plurality of position coordinates of the coordinate data thus obtained are divided into sections so that the monotonous increase or decrease of the X coordinate continues in the read time-series order, and a distance between adjacent position coordinates in each section is predetermined. Further sections are divided according to whether or not the distance is greater than or equal to the distance, and in sections where the distance between position coordinates is greater than or equal to a predetermined distance, interpolation is performed for each section using multiple types of interpolation functions, and each position is interpolated. Calculate the area surrounded by the line segment connecting the markers with straight lines and the curves obtained by various interpolation functions, adopt the interpolation function of the smallest area among those areas, and the line integral value of each adopted interpolation function On the other hand, in the interval where the distance between the position coordinates is not more than the predetermined distance, the total value of the linear distance between the position coordinates is calculated, and the total value of the linear integral value and the linear distance of each interpolation function adopted characterized in that it comprises a distance calculating means for calculating a distance corresponding to the trajectories by adding the.

According to this configuration, in a state where the user is in contact with the medium by the electronic pen or wand and moves over fill or medium medium, electronic pen or wand is discrete along the moving locus Coordinate data is calculated and transmitted to the terminal device. In the terminal device, the data communication means receives the coordinate data transmitted from the electronic pen or the pen-type scanner, and the distance calculation means is received by the data communication means in order to enable application of interpolation by an interpolation function, a plurality of position coordinates of the coordinate data calculated by the electronic pen or wand along the trajectories, time series in in terms of monotonically increasing or decreasing the X coordinate and segmentation so as to be continuous in each section Further sections are divided according to whether or not the distance between adjacent position coordinates is greater than or equal to a predetermined distance. In a section where distances between position coordinates that are greater than or equal to a predetermined distance are continuous, interpolation is performed using multiple types of interpolation functions for each section. The area enclosed by the line segment connecting the straight lines and the curves obtained by various interpolation functions was calculated, and the interpolation function with the smallest area among those areas was adopted and adopted. Calculating a line integral value of the interpolation function, while, in the section where the distance between the predetermined distance or more coordinates are not consecutive, calculates the total value of the linear distance between the position coordinates, the line integration value of the interpolation function is employed It calculates a distance corresponding to the trajectories by adding the total value of the linear distance. Accordingly, when the user enters desired characters or line segments with an electronic pen or a pen-type scanner, the terminal device can accurately calculate the distance according to the handwriting.

Or, the terminal apparatus according to the present invention receives a discrete coordinate data calculated by reading the coded pattern printed on the medium at predetermined time intervals from the electronic pen or wand, trajectories from the coordinate data a terminal device for calculating a distance corresponding to the length of, operations and data communication means for receiving the coordinate data, received by said data communication means, by the electronic pen or the wand along the trajectories A plurality of position coordinates of the coordinate data that have been read so that the monotonous increase or decrease of the X coordinate continues in the time-series order read , and the angle formed by the three consecutive points is not less than the threshold angle. After dividing into sections, it is further divided into sections depending on whether the distance between adjacent position coordinates in each section is greater than or equal to a predetermined distance, and the distance between position coordinates that is greater than or equal to the predetermined distance is continuous. In each section, interpolation is performed with multiple types of interpolation functions for each section, and the area enclosed by the line segment connecting each position coordinate with a straight line and the curve obtained by various interpolation functions is calculated. Employs an interpolation function with a small area, calculates the line integral value of each interpolation function adopted, and on the other hand, in the interval where the distance between the position coordinates above the predetermined distance is not continuous, the total value of the linear distance between each position coordinate is calculated calculated, characterized in that it comprises a distance calculating means for calculating a distance corresponding to the trajectories by adding the total value of the line integral values and the linear distance of each interpolation function adopted.

According to this configuration, in a state where the user is in contact with the medium by the electronic pen or wand and moves over fill or medium medium, electronic pen or wand is discrete along the moving locus Coordinate data is calculated and transmitted to the terminal device. In the terminal device, the data communication means receives the coordinate data transmitted from the electronic pen or the pen-type scanner, and the distance calculation means is received by the data communication means in order to enable application of interpolation by an interpolation function, a plurality of position coordinates of the coordinate data calculated by the electronic pen or wand along the trajectories, as monotonically increasing or decreasing the X coordinate chronological order in the continuous and forms a continuous three-point Sections are divided so that the angle does not become less than the threshold angle, and further divided into sections depending on whether or not the distance between adjacent position coordinates in each section is equal to or greater than a predetermined distance, and the distance between the position coordinates is equal to or greater than the predetermined distance. In each section, interpolation is performed with multiple types of interpolation functions, and the area enclosed by the line segments connecting each position coordinate with straight lines and the curves obtained by various interpolation functions is calculated. Of employing an interpolation function of the smallest area among the area, it calculates the line integral values for each interpolation function is employed, while, in the section where the distance between the predetermined distance or more coordinates are not continuous, between the position coordinates It calculates the total value of the linear distance, and calculates the distance corresponding to the trajectories by adding the total value of the line integral values and the linear distance of each interpolation function adopted. Accordingly, when the user enters desired characters or line segments with an electronic pen or a pen-type 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 at predetermined time intervals from the electronic pen or the pen-type scanner. and, a terminal device for calculating a distance on the earth's surface corresponding to the path indicated by the coordinate data by trajectories on the map area, the data communication means for receiving the coordinate data, received by said data communication means , a plurality of position coordinates of said coordinate data calculated by said electronic pen or the wand along the trajectories, as monotonically increasing or decreasing the X-coordinate at the read time series are consecutive sections After dividing, each segment is interpolated with multiple types of interpolation functions, and the line segments connecting each position coordinate with straight lines and the curves obtained by various interpolation functions By calculating the area to be cut, adopting the interpolation function of the smallest area among those areas, calculating the line integral value of each adopted interpolation function, and adding the line integral values of each adopted interpolation function characterized in that it comprises a distance calculating means for calculating a distance on the earth's surface corresponding to the trajectories on the map area.

According to this configuration, in a state where the user contacts the map area of the medium by the electronic pen or wand, when tracing the medium, electronic pen or pen-type scanner, discrete coordinate data along the path traced Is calculated and transmitted to the terminal device. In the terminal device, the data communication means receives the coordinate data transmitted from the electronic pen or the pen-type scanner, and the distance calculation means is received by the data communication means in order to enable application of interpolation by an interpolation function, a plurality of position coordinates of the coordinate data calculated by the electronic pen or wand along the trajectories, the time in chronological order in terms of monotonically increasing or decreasing the X coordinate and segmentation to be continuous, for each section Interpolate with multiple types of interpolation functions, calculate the area enclosed by the line segment connecting each position coordinate with a straight line and the curve obtained by various interpolation functions, and choose the interpolation function of the smallest area among those areas adopted, it calculates the line integral values for each interpolation function employing, calculates the distance on the ground which corresponds to trajectories on the map area by adding the line integral values for each interpolation function employing That. Therefore, when the user traces a desired route on the map area with the electronic pen or the pen-type scanner, the terminal device can accurately calculate the distance on the map according to the handwriting traced on the map area. Can do.

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 at predetermined time intervals from the electronic pen or the pen-type scanner. and, a terminal device for calculating a distance on the earth's surface corresponding to the path indicated by the coordinate data by trajectories on the map area, the data communication means for receiving the coordinate data, received by said data communication means , said plurality of position coordinates of said coordinate data calculated by said electronic pen or the wand along the trajectories, as monotonically increasing or decreasing the X coordinate in chronological order read are consecutive, In addition, after dividing the section so that the angle formed by three consecutive points does not become less than the threshold angle, each section is interpolated with multiple types of interpolation functions, Calculate the area enclosed by the line segment that connects the coordinates with a straight line and the curve obtained by various interpolation functions, adopt the interpolation function of the smallest area among those areas, and the line integral value of each adopted interpolation function calculates the, characterized in that it comprises a distance calculating means for calculating a distance on the earth's surface corresponding to the trajectories on the map area by adding the each line integral.

According to this configuration, in a state where the user contacts the map area of the medium by the electronic pen or wand, when tracing the medium, electronic pen or pen-type scanner, discrete coordinate data along the path traced Is calculated and transmitted to the terminal device. In the terminal device, the data communication means receives the coordinate data transmitted from the electronic pen or the pen-type scanner, and the distance calculation means is received by the data communication means in order to enable application of interpolation by an interpolation function, a plurality of position coordinates of the coordinate data calculated by the electronic pen or wand along the trajectories, as monotonically increasing or decreasing the X coordinate chronological order in the continuous and forms a continuous three-point The sections are divided so that the angle does not become less than the threshold angle, and each section is interpolated with multiple types of interpolation functions, and each position coordinate is surrounded by straight lines and curves obtained by various interpolation functions. The map area is calculated by calculating the area, adopting the interpolation function of the smallest area among these areas, calculating the line integral value of each adopted interpolation function, and adding the line integral values. Calculating a distance on the earth's surface corresponding to the trajectories of the A. Therefore, when the user traces a desired route on the map area with the electronic pen or the pen-type scanner, the terminal device can accurately calculate the distance on the map according to the handwriting traced on the map area. Can do.

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 at predetermined time intervals from the electronic pen or the pen-type scanner. and, a terminal device for calculating a distance on the earth's surface corresponding to the path indicated by the coordinate data by trajectories on the map area, the data communication means for receiving the coordinate data, received by said data communication means , a plurality of position coordinates of said coordinate data calculated by said electronic pen or the wand along the trajectories, as monotonically increasing or decreasing the X-coordinate at the read time series are consecutive sections After dividing, further divide into sections depending on whether the distance between adjacent position coordinates in each section is greater than or equal to a predetermined distance. In sections where the distance between the gauges is continuous, each area is interpolated with multiple types of interpolation functions, and the area enclosed by the line segment connecting each position coordinate with straight lines and the curves obtained by various interpolation functions is calculated. The interpolation function of the smallest area among the areas is adopted, and the line integral value of each adopted interpolation function is calculated. On the other hand, in the section where the distance between the position coordinates equal to or greater than the predetermined distance is not continuous, between the position coordinates calculates the sum of the straight line distance, a distance calculating means for calculating a distance on the earth's surface corresponding to the trajectories on the map area by adding the total value of the line integral values and the linear distance of each interpolation function employing It is characterized by providing.

According to this configuration, in a state where the user contacts the map area of the medium by the electronic pen or wand, when tracing the medium, electronic pen or pen-type scanner, discrete coordinate data along the path traced Is calculated and transmitted to the terminal device. In the terminal device, the data communication means receives the coordinate data transmitted from the electronic pen or the pen-type scanner, and the distance calculation means is received by the data communication means in order to enable application of interpolation by an interpolation function, a plurality of position coordinates of the coordinate data calculated by the electronic pen or wand along the trajectories, time series in in terms of monotonically increasing or decreasing the X coordinate and segmentation so as to be continuous in each section Further sections are divided according to whether or not the distance between adjacent position coordinates is greater than or equal to a predetermined distance. In a section where distances between position coordinates that are greater than or equal to a predetermined distance are continuous, interpolation is performed using multiple types of interpolation functions for each section. The area enclosed by the line segment connecting the straight lines and the curves obtained by various interpolation functions was calculated, and the interpolation function with the smallest area among those areas was adopted and adopted. Calculating a line integral value of the interpolation function, while, in the section where the distance between the predetermined distance or more coordinates are not consecutive, calculates the total value of the linear distance between the position coordinates, the line integration value of the interpolation function is employed It said calculating a distance on the earth's surface corresponding to the trajectories of the map area by adding the total value of the linear distance. Therefore, when the user traces a desired route on the map area with the electronic pen or the pen-type scanner, the terminal device can accurately calculate the distance on the map according to the handwriting traced on the map area. Can do.

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 at predetermined time intervals from the electronic pen or the pen-type scanner. and, a terminal device for calculating a distance on the earth's surface corresponding to the path indicated by the coordinate data by trajectories on the map area, the data communication means for receiving the coordinate data, received by said data communication means , said plurality of position coordinates of said coordinate data calculated by said electronic pen or the wand along the trajectories, as monotonically increasing or decreasing the X coordinate in chronological order read are consecutive, In addition, after dividing the section so that the angle formed by three consecutive points does not become less than the threshold angle, the distance between adjacent position coordinates in each section is predetermined. Further sections are divided according to whether or not they are separated from each other, and in sections where the distance between position coordinates is greater than or equal to a predetermined distance, each section is interpolated with multiple types of interpolation functions, and various line segments and various lines are connected by straight lines. Calculate the area enclosed by the curve obtained by the interpolation function, adopt the interpolation function of the smallest area among those areas, calculate the line integral value of each adopted interpolation function, on the other hand, more than the predetermined distance In the interval where the distance between the position coordinates is not continuous, the total value of the straight line distances between the respective position coordinates is calculated, and the sum of the linear integral values of the respective interpolation functions and the total value of the straight line distances is added to the map area. characterized in that it comprises a distance calculating means for calculating a distance on the earth's surface corresponding to the trajectories.

According to this configuration, in a state where the user contacts the map area of the medium by the electronic pen or wand, when tracing the medium, electronic pen or pen-type scanner, discrete coordinate data along the path traced Is calculated and transmitted to the terminal device. In the terminal device, the data communication means receives the coordinate data transmitted from the electronic pen or the pen-type scanner, and the distance calculation means is received by the data communication means in order to enable application of interpolation by an interpolation function, a plurality of position coordinates of the coordinate data calculated by the electronic pen or wand along the trajectories, as monotonically increasing or decreasing the X coordinate chronological order in the continuous and forms a continuous three-point Sections are divided so that the angle does not become less than the threshold angle, and further divided into sections depending on whether or not the distance between adjacent position coordinates in each section is equal to or greater than a predetermined distance, and the distance between the position coordinates is equal to or greater than the predetermined distance. In each section, interpolation is performed with multiple types of interpolation functions, and the area enclosed by the line segments connecting each position coordinate with straight lines and the curves obtained by various interpolation functions is calculated. Of employing an interpolation function of the smallest area among the area, it calculates the line integral values for each interpolation function is employed, while, in the section where the distance between the predetermined distance or more coordinates are not continuous, between the position coordinates It calculates the total value of the linear distance, and calculates the distance on the earth's surface corresponding to trajectories on the map area by adding the total value of the line integral values and the linear distance of each interpolation function adopted. Therefore, when the user traces a desired route on the map area with the electronic pen or the pen-type scanner, the terminal device can accurately calculate the distance on the map according to the handwriting traced on the map area. Can do.

  Furthermore, in the above terminal device, the plurality of types of interpolation functions are a spline function and a Lagrangian function. In this case, the electronic pen can recognize the distance 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.

The program according to the present invention receives a discrete coordinate data calculated by reading the coded pattern printed on the medium at predetermined time intervals from the electronic pen or wand, the trajectories from the coordinate data a program executed by a computer that calculates the distance corresponding to the length, the data communication means for receiving the coordinate data, said received by the data communication means, the electronic pen or the wand along the trajectories After dividing the plurality of position coordinates of the coordinate data calculated by the step so that the monotonous increase or decrease of the X coordinate continues in the read time-series order, and interpolate with multiple types of interpolation functions for each interval To calculate the area enclosed by the line segment connecting each position coordinate with a straight line and the curve obtained by various interpolation functions. There is adopted the interpolation function of the area, calculates the line integral values for each interpolation function is employed, the as a distance calculating means for calculating a distance corresponding to the trajectories by adding the line integral values for each interpolation function employing It is characterized by making a computer function.

Or a program according to the present invention receives a discrete coordinate data calculated by reading the coded pattern printed on the medium at predetermined time intervals from the electronic pen or wand, the trajectories from the coordinate data a program executed by a computer that calculates the distance corresponding to the length, the data communication means for receiving the coordinate data, said received by the data communication means, the electronic pen or the wand along the trajectories As for the plurality of position coordinates of the coordinate data calculated by the above, the monotonous increase or the monotonic decrease of the X coordinate continues in the order of reading , and the angle formed by the three consecutive points does not become less than the threshold angle. In this way, each section is interpolated with multiple types of interpolation functions, and each position coordinate is obtained by a line segment and various interpolation functions. And the area enclosed by the curve is calculated, employing the interpolation function of the smallest area among those areas, it calculates the line integral values for each interpolation function is employed, trajectories by summing each line integral value The computer is caused to function as a distance calculation means for calculating a distance according to.

Or a program according to the present invention receives a discrete coordinate data calculated by reading the coded pattern printed on the medium at predetermined time intervals from the electronic pen or wand, the trajectories from the coordinate data a program executed by a computer that calculates the distance corresponding to the length, the data communication means for receiving the coordinate data, said received by the data communication means, the electronic pen or the wand along the trajectories After dividing the plurality of position coordinates of the coordinate data calculated by the steps so that the monotonous increase or decrease of the X coordinate continues in the read time-series order, the distance between adjacent position coordinates in each section Is further divided into sections depending on whether or not the distance is greater than or equal to a predetermined distance. Interpolate with the interpolation function, calculate the area enclosed by the line segment connecting each position coordinate with a straight line and the curve obtained by various interpolation functions, adopt the interpolation function of the smallest area among those areas, It calculated employing the line integral values for each interpolation function, while, in the section where the distance between the predetermined distance or more coordinates are not consecutive, calculates the total value of the linear distance between the position coordinates of each interpolation function employing and characterized by causing the computer to function as a distance calculating means for calculating a distance corresponding to the trajectories by adding the line integral value and the total value of the linear distance.

Or a program according to the present invention receives a discrete coordinate data calculated by reading the coded pattern printed on the medium at predetermined time intervals from the electronic pen or wand, the trajectories from the coordinate data a program executed by a computer that calculates the distance corresponding to the length, the data communication means for receiving the coordinate data, said received by the data communication means, the electronic pen or the wand along the trajectories As for the plurality of position coordinates of the coordinate data calculated by the above, the monotonous increase or the monotonic decrease of the X coordinate continues in the order of reading , and the angle formed by the three consecutive points does not become less than the threshold angle. In this way, each section is further divided into sections according to whether or not the distance between adjacent position coordinates is greater than or equal to a predetermined distance. In the section where the distance between the position coordinates is continuous, interpolation is performed with multiple types of interpolation functions for each section, and the area enclosed by the line segment connecting each position coordinate with a straight line and the curves obtained by various interpolation functions is calculated. Then, the interpolation function of the smallest area among those areas is adopted, and the line integral value of each adopted interpolation function is calculated. On the other hand, in the section where the distance between the position coordinates beyond the predetermined distance is not continuous, each position is calculated. It calculates the sum of the linear distance between the coordinates, causes the computer to function as distance calculating means for calculating a distance corresponding to the trajectories by adding the total value of the line integral values and the linear distance of each interpolation function employing It is characterized by that.

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 at predetermined time intervals from an electronic pen or a pen-type scanner. , a program executed by a computer for calculating the distance on the ground which corresponds to a path indicated by the coordinate data by trajectories on the map area, the data communication means for receiving the coordinate data, by said data communication means is received, a plurality of position coordinates of said coordinate data calculated by said electronic pen or the wand along the trajectories, that monotonically increasing or decreasing the X-coordinate at the read time series are consecutive After dividing into sections, each section is interpolated with multiple types of interpolation functions and each position coordinate is connected with a straight line. Calculate the area enclosed by the curve obtained by the seed interpolation function, adopt the interpolation function of the smallest area among those areas, calculate the line integral value of each interpolation function adopted, each interpolation function adopted by adding the line integral values and characterized by causing the computer to function as a distance calculating means for calculating a distance on the earth's surface corresponding to the trajectories on the map area.

Alternatively, the program according to the present invention receives, from an electronic pen or a pen-type scanner, discrete coordinate data calculated by reading the coded pattern of the medium on which the map area and the coded pattern are printed at predetermined time intervals. , a program executed by a computer for calculating the distance on the ground which corresponds to a path indicated by the coordinate data by trajectories on the map area, the data communication means for receiving the coordinate data, by said data communication means is received, a plurality of position coordinates of said coordinate data calculated by said electronic pen or the wand along the trajectories, that monotonically increasing or decreasing the X-coordinate at the read time series are consecutive In addition, after dividing the section so that the angle formed by the three consecutive points does not become less than the threshold angle, there are multiple types for each section. Interpolate with the interpolation function of, calculate the area enclosed by the line segment connecting each position coordinate with a straight line and the curve obtained by various interpolation functions, and adopt the interpolation function of the smallest area among those areas calculates the line integral values for each interpolation function employing, that causes the computer to function as distance calculating means for calculating a distance on the earth's surface corresponding to the trajectories on the map area by summing each line integral value Features.

Alternatively, the program according to the present invention receives, from an electronic pen or a pen-type scanner, discrete coordinate data calculated by reading the coded pattern of the medium on which the map area and the coded pattern are printed at predetermined time intervals. , a program executed by a computer for calculating the distance on the ground which corresponds to a path indicated by the coordinate data by trajectories on the map area, the data communication means for receiving the coordinate data, by said data communication means is received, a plurality of position coordinates of said coordinate data calculated by said electronic pen or the wand along the trajectories, that monotonically increasing or decreasing the X-coordinate at the read time series are consecutive Divided into sections, and depending on whether or not the distance between adjacent position coordinates in each section is greater than or equal to a predetermined distance In a section where the distance between position coordinates is equal to or greater than a predetermined distance, interpolation is performed with multiple types of interpolation functions for each section, and a line segment connecting each position coordinate with a straight line and a curve obtained by various interpolation functions The area surrounded by is calculated, the interpolation function of the smallest area among those areas is adopted, the line integral value of each adopted interpolation function is calculated, and on the other hand, the distance between the position coordinates above the predetermined distance is continuous and in a section not, calculates the total value of the linear distance between the position coordinates, surface on which corresponding to the trajectories on the map area by adding the total value of the line integral values and the linear distance of each interpolation function employing The computer is made to function as a distance calculation means for calculating the distance.

Alternatively, the program according to the present invention receives, from an electronic pen or a pen-type scanner, discrete coordinate data calculated by reading the coded pattern of the medium on which the map area and the coded pattern are printed at predetermined time intervals. , a program executed by a computer for calculating the distance on the ground which corresponds to a path indicated by the coordinate data by trajectories on the map area, the data communication means for receiving the coordinate data, by said data communication means is received, a plurality of position coordinates of said coordinate data calculated by said electronic pen or the wand along the trajectories, that monotonically increasing or decreasing the X-coordinate at the read time series are consecutive In addition, each section is divided so that the angle formed by three consecutive points does not become less than the threshold angle. Further sections are divided according to whether or not the distance between the adjacent position coordinates is equal to or greater than a predetermined distance.In a section where the distance between the position coordinates is equal to or greater than the predetermined distance, interpolation is performed using a plurality of types of interpolation functions for each section. Calculate the area enclosed by the line segments connected by straight lines and the curves obtained by various interpolation functions, adopt the interpolation function with the smallest area among those areas, and calculate the line integral value of each interpolation function adopted On the other hand, in the interval where the distance between the position coordinates that is greater than or equal to the predetermined distance is not continuous, the total value of the linear distances between the position coordinates is calculated, and the total value of the linear integral value and the linear distance of each interpolation function adopted is added. and characterized by causing the computer to function as a distance calculating means for calculating a distance on the earth's surface corresponding to the trajectories on the map area by combining.

  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 the operation of an electronic pen and a pen-type scanner, the coordinate data of the locus by the entry is calculated. While calculating the distance of the trajectory. At this time, by interpolating a plurality of position coordinates of the discrete coordinate data acquired by the electronic pen or the pen-type 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 generates 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 30 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 coordinate points where the angle formed by the three coordinate points is less than the threshold, segmentation is performed as segment boundaries. Then, the distance calculation means 32 obtains the distance between each coordinate point (sample point) for each section, and a plurality of types of interpolation functions for a plurality of coordinate points whose distance is not less than the predetermined distance d. , And the interpolation function that minimizes the area between the straight line connecting the coordinate points is set as the interpolation function of the section. In addition, the distance calculation means 32 calculates the line integral value of the interpolation function for each section for which the interpolation function is obtained, and calculates the distance between coordinate points for each section for which the interpolation function is not obtained, and integrates them. The length L of the handwriting is accurately obtained by integrating the value and the distance between coordinate points.

  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 from the information storage means 30, the distance (path) D on the ground surface is calculated with reference to the scale value c, and the sound output means 33 is notified of the distance D on the ground surface by voice. This is a module that configures the distance calculation means 32 in the terminal device 3.

[Distance calculation processing in the map information provision system]
Next, distance calculation processing performed by the map information providing system of this 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 S101), 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 S102). Then, the processor 11 generates 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 S103). Furthermore, the electronic pen 1A transmits the entry information 20 to the terminal device 3 (step S104).

  If the user keeps tracing the route desired by the user while the pen tip 1a of the electronic pen 1A is in contact with the map area 100, the electronic pen 1A is not separated from the map area 100 (step S105; No). Then, the process proceeds to step S102, and steps S102 to S105 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 S102), and the coordinate data 23 as described above. Etc. (step S103), and the entry information 20 is transmitted to the terminal device 3 (step S104). 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 S105; Yes), the processing ends.

  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 saves the entry information 20 in the information storage unit 30 and transmits it to the distance calculation unit 32 (step S111).

  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 S112), 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 S113 and S114). Specifically, a plurality of coordinate data 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. Then, the sections are further divided depending on whether or not the distance between adjacent position coordinates in each section is equal to or greater than a predetermined distance d. The predetermined distance d is an appropriate distance to be approximated by linear interpolation if the distance between adjacent position coordinate points (between sampling points) is less than the distance d, and can be set as appropriate. In a section where the distance between position coordinate points equal to or greater than the predetermined distance d is continuous, interpolation is performed with a plurality of types of interpolation functions for each section, and a line segment connecting each position coordinate with a straight line and a curve obtained by various interpolation functions Are calculated, and an interpolation function of the smallest area among these areas is obtained (step S113). On the other hand, in a section where the distance between the position coordinate points equal to or greater than the predetermined distance d is not continuous, the position coordinates are connected by a straight line, and the total value of the straight line distances is calculated. Subsequently, the length of the handwriting is obtained by adding the line integral value of each interpolation function (Gf (m, x)) and the total value of the straight line distance (KHt) (step S114).

  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. From the above, the distance (distance) D on the ground surface is calculated (step S115).

  In general, 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 S102 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 S116). 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.

  FIG. 11 is a flowchart showing an interpolation function setting algorithm by the distance calculation means 32 in the process of step S113, and the details of this algorithm will be described below 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, after obtaining coordinate data from the coordinate data (Xs, Ys) of the start point to the coordinate data (Xe, Ye) of the end point (step S201), a plurality of coordinate data in time series order are monotonically increased or The sections are divided so that the monotonous decrease continues (step S202). As shown in FIG. 13, 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) to t. Therefore, the coordinate points t (5) and t (11) are set as the boundaries of the section division.

  Next, as shown in FIG. 14, 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),... A coordinate point corresponding to is extracted and set as a boundary of section division (step S203). 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.
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

  Next, as shown in FIG. 16A, the distance between the sampling points is obtained for each section D (m), and each distance is classified into a predetermined distance d or more and less than the predetermined distance d (step S204). ). Then, for the section of the predetermined distance d or more, the sections are numbered as H (m) {m = 0 to mmax} in time series from the start point (Xs, Ys) (step S205). Then, in each numbered section H (m), interpolation is performed with a plurality of types of interpolation functions to obtain approximate interpolation functions (step S206). FIG. 16B shows an example in which interpolation is performed using a spline interpolation function and a Lagrangian interpolation function. When a plurality of types of interpolation functions are a spline function and a Lagrange function in this way, the spline in the section H (m) is shown. The interpolation function by interpolation is G (m) spline (x), and the interpolation function by Lagrange interpolation is G (m) lagrange (x).

  Subsequently, the area surrounded by the line segment connecting each sampling point with a straight line and the curve of G (m) spline (x), the line segment connecting each sampling point with a straight line, and G (m) lagrange ( The area surrounded by the curve x) is obtained, and the values are set as Gp (m) spline and Gp (m) lagrange (step S207). Then, the minimum value of Gp (m) spline and Gp (m) lagrange is obtained, and this is set as Gf (m) as shown in FIG. 16C, and the corresponding interpolation curve is set as Gf (m, x). (Step S208).

  On the other hand, for the sections less than the predetermined distance d, the sections are numbered as Ht (n) {n = 0 to nmax} in chronological order from the start point (Xs, Ys) (step S209), and the intervals between the sampling points are linear. The distance between the lines is KHt (n) (step S210), and KHt (n) of each section is added (step S211).

  If the minimum and maximum values of the X coordinate between the sampling points of the interpolation function Gf (m, x) are Xmin (m) and Xmax (m), the trace length L is expressed by the following equation. (Step S114).

ここで、Ｇf'(m,x) ＝ｄＧｆ(m,x) ／ｄｘである。

Here, Gf ′ (m, x) = dGf (m, x) / dx.

  As described above, the distance of the optimum interpolation function obtained in the section where the distance between the position coordinate points equal to or greater than the predetermined distance d and the distance of the line segment obtained in the section where the distance between the position coordinate points equal to or greater than the predetermined distance d are not continuous. By adding together with the total value of, a more accurate path closer to the actual drawn trajectory can be obtained. In addition to the spline interpolation and the Lagrange interpolation, various interpolation functions and interpolation functions having different orders can be applied as the interpolation function.

  An appropriate interpolation curve is selected based on the size relationship between the area surrounded by the straight line and the interpolation curve.When the sampling points are dense, the spline function is selected rather than the Lagrange function. It is possible to avoid problems such as “Runge phenomenon (vibration)” that are likely to occur in high-order interpolation. When the sampling points are sparse, an interpolation function with higher accuracy can be selected by selecting a Lagrangian function or a spline function.

  In the section Hm where the distance between sampling points is equal to or greater than d, if there are only two sampling numbers (end and end of the section), the sampling points of the section located in front of and behind the section Hc are included. And an interpolation function.

  Since the electronic pen 1 captures the dot pattern 75 times per second and obtains the coordinate data (Xi, Yi), the obtained coordinates are continuous along the traced path, but the moving speed of the electronic pen 1 Is faster, the distance between the sampling points becomes longer. Therefore, smoother curve interpolation is preferable to reproduce the locus of the electronic pen 1 than linear interpolation between the sampling points.

  Thus, when the user traces the electronic pen 1 along the desired route on the map area 100, the electronic pen 1 calculates a plurality of position coordinates along the traced route, and Based on the position coordinates, the distance (path) D on the surface of the route on the map can be output via the speaker 10.

[Operational effects of the system using the terminal device of the first embodiment]
According to the map information providing 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 The entry information 20 including the coordinates 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 sections so that the monotonous increase or decrease of the X coordinate continues in chronological order, and even at the coordinate points where the angle between the three consecutive coordinate points is less than the threshold, In the section where the distance between the position coordinates adjacent to each other in the section is greater than or equal to the predetermined distance, in the section where the distance between the position coordinates equal to or greater than the predetermined distance is continuous, each section is interpolated with a plurality of types of interpolation functions. Calculate the area enclosed by the line segment connecting the position coordinates with a straight line and the curve obtained by various interpolation functions, adopt the interpolation function of the smallest area among those areas, and use each interpolation function On the other hand, in the section where the distance between the position coordinates greater than the predetermined distance is not continuous, connect each position coordinate with a straight line, calculate the total value of those linear distances, and adopt each interpolation function By adding the total value of the line integral value and the straight line distance, the length L of the handwriting is obtained with high accuracy by the combination of the interpolation function to be applied and the straight line segment. 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. 17 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, in the second embodiment, while the user writes a route to the map area 100 with the electronic pen 1B, the electronic pen 1B follows the written route. The entry information 20 generated along the line is stored in the memory 19, and when the user completes the entry of the route, a check mark or a tap is entered in the transmission area 110 of the dedicated paper 2B with the electronic pen 1B. The entry information 20 is collectively sent from the electronic pen 1B to the terminal device 3, and the terminal device 3 calculates the trajectory collectively to obtain the path D. 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. 18, 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 in the map information provision system]
Next, distance calculation processing performed by the terminal device of the second embodiment will be described with reference to FIGS. 19 and 20. FIG. 19 is a diagram illustrating the dedicated paper 2B with handwriting traced with the electronic pen 1B. FIG. 20 is a flowchart of distance calculation in the electronic pen 1B.

  As shown in FIG. 19, 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 higher than a predetermined value (step S101A), 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 S102A). 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 S103A). The completed entry information 20 is stored in the memory 19 (step S104A). 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 S105A; No), the process proceeds to step 102A, 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 touches the transmission area 110 with the electronic pen 1B (step S105A; Yes), the electronic pen 1B is held in the memory 19. The entry information 20 is collectively transmitted to the terminal device 3 (step S106A).

  The data communication means 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 means 30, and transmits it to the distance calculation means 32 (step S111A).

  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 S112A and S113A). The calculation procedure of steps S112A and S113A is the same as the procedure described in steps S113 and S114 in the first embodiment. That is, after dividing the plurality of coordinate data 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, The section is further divided according to whether or not the distance between adjacent position coordinates in the section is equal to or greater than a predetermined distance d. The predetermined distance d is an appropriate distance to be approximated by linear interpolation if the distance between adjacent position coordinate points (between sampling points) is less than the distance d, and can be set as appropriate. In a section where the distance between position coordinate points equal to or greater than the predetermined distance d is continuous, interpolation is performed with a plurality of types of interpolation functions for each section, and a line segment connecting each position coordinate with a straight line and a curve obtained by various interpolation functions And the interpolation function of the smallest area among these areas is obtained (step S112A). On the other hand, in a section where the distance between the position coordinate points equal to or greater than the predetermined distance d is not continuous, the position coordinates are connected by a straight line, and the total value of the straight line distances is calculated. Subsequently, the length of the handwriting is obtained by adding the line integral value of each interpolation function (Gf (m, x)) and the total value of the linear distance (KHt) (step S113A). 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. From the above, the distance (distance) D on the ground surface is calculated (step S114A).

  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 S115A). This completes the distance calculation.

  Here, details of the distance calculation of the distance calculation means 32 in the processing of steps S112A and S113A are the same as the processing of steps S113A and S114A described with reference to FIGS. 12 to 16 in the first embodiment.

[Operational effects of the system using the terminal device of the second embodiment]
According to the map information providing system using the terminal device 3, when the user traces the map area 100 with the electronic pen 1B, the electronic pen 1B calculates the coordinates on the traced path at predetermined intervals, and The entry information 20 including the coordinates 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 sections so that the monotonous increase or decrease of the X coordinate continues in chronological order, and even at the coordinate points where the angle between the three consecutive coordinate points is less than the threshold, In the section where the distance between the position coordinates adjacent to each other in the section is greater than or equal to the predetermined distance, in the section where the distance between the position coordinates equal to or greater than the predetermined distance is continuous, each section is interpolated with a plurality of types of interpolation functions. Calculate the area enclosed by the line segment connecting the position coordinates with a straight line and the curve obtained by various interpolation functions, adopt the interpolation function of the smallest area among those areas, and use each interpolation function On the other hand, in the section where the distance between the position coordinates greater than the predetermined distance is not continuous, connect each position coordinate with a straight line, calculate the total value of those linear distances, and adopt each interpolation function By adding the total value of the line integral value and the straight line distance, the length L of the handwriting is obtained with high accuracy by the combination of the interpolation function to be applied and the straight line segment. 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 for the section division method, which is different from the first embodiment and the second embodiment. FIG. 21 is a flowchart showing a modification of the section division performed in steps S202 and S203 in the flowchart of FIG. In the third embodiment, in the time-series data of the position coordinates calculated by the electronic pen 1A, the viewpoint that the monotonous increase or monotonic decrease of the X coordinate is continuous, and the angle formed by the three consecutive points is less than the threshold angle. Divide into sections by judging from both viewpoints.

  From step S201 of FIG. 11, as shown in FIG. 21, an initial value 0 (n = 0) is assigned to n for dividing the coordinate data into sections (step S301). 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 S302). If yes, the angle formed by the coordinate points t (n), t (n + 1), t (n + 2) is obtained (step S303), and it is determined whether the angle is less than the threshold (step S304). In the case of yes, the coordinate point t (n + 1) is set as the boundary of the section (step S305). 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 S302, it tends to increase or decrease. Therefore, the process proceeds to step S305, and the coordinate point t (n + 1) is set as the boundary of the section.

  In step S304, it is determined whether or not the coordinate point t (n + 2) is the end point (step S306) in both cases where the angle formed is not less than the threshold (no) and after step S305. In the case of yes, the process proceeds to step S204 in FIG. 11, and in the case of no, n is incremented by 1 (step S207: n = n ++), and three consecutive points to be judged for validity of section division are determined. Then, one step is sent back in time series, and the procedure of steps S302 to S306 is repeated. After this process is repeated until the end of the coordinate points in time series order, the process proceeds to step S204 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.

<Fourth embodiment>
Next, a fourth embodiment will be described. The distance calculation means in the first and second embodiments is 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. In addition, the distance calculation unit according to the fourth embodiment is further divided into monotonically increasing or monotonic X coordinates in time series order depending on whether or not the distance between adjacent position coordinates in each section is greater than or equal to a predetermined distance. After the sections are divided so that the decrease continues, the sections are further divided depending on whether or not the distance between adjacent position coordinates in each section is equal to or greater than a predetermined distance. That is, it is not determined whether or not the angle formed by the three consecutive points is less than the threshold value. Therefore, in the flowchart of FIG. 11 described in the first embodiment and the second embodiment, the process jumps from step S202 to step S204 without performing step S203 (see FIG. 22).

<Fifth Embodiment>
Next, a fifth embodiment will be described. In the distance calculation means in the first, second and third embodiments, 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. In addition, the distance calculation means according to the fifth embodiment is a monotonic X coordinate in chronological order, depending on whether or not the distance between adjacent position coordinates in each section is equal to or greater than a predetermined distance. Whether the distance between adjacent position coordinates in each section is greater than or equal to a predetermined distance after dividing the section so that the increase or monotonic decrease continues and the angle formed by the three consecutive points is not less than the threshold angle Without determining, the optimal interpolation function is obtained and the line integral of each interpolation function is integrated. Therefore, in the flowchart of FIG. 11 described in the first embodiment, the process jumps to step S205 without performing the determination from step S203 to step S204 (see FIG. 23). Further, steps S202B and S203B of FIG. 23 may be performed as shown in the flowchart of FIG. 21 described in the third embodiment.

<Sixth Embodiment>
Next, a sixth embodiment will be described. In the distance calculation means in the first, second and third embodiments, 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. In addition, the distance calculation means according to the sixth embodiment performs monotonic X coordinates in time series order, depending on whether or not the distance between adjacent position coordinates in each section is equal to or greater than a predetermined distance. Divide the sections so that the increase or monotonic decrease continues, do not determine whether the angle formed by the three consecutive points is less than the threshold, and whether the distance between adjacent position coordinates in each section is greater than or equal to the specified distance Without determining whether or not, an optimum interpolation function is obtained in each section, and the line integral of each interpolation function is integrated. Therefore, in the flowchart of FIG. 11 described in the first embodiment, the process jumps to step S205 without performing steps S202 to S203 and without further determining step S204 (see FIG. 24).

  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, 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 a flowchart which shows the setting algorithm of the interpolation function by the distance calculating means in the process of step S113 of the flowchart shown in FIG. 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 the procedure of the setting of the interpolation function application area performed by a distance calculating means, and the selection of the optimal interpolation function. 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. 18 with the handwriting traced with the electronic pen. It is a flowchart of the distance calculation in 2nd Embodiment. It is a flowchart which shows the modification of the area division performed by step S202-S203 in the flowchart of FIG. It is a flowchart which shows the setting algorithm of the interpolation function in 4th Embodiment. It is a flowchart which shows the setting algorithm of the interpolation function in 5th Embodiment. It is a flowchart which shows the setting algorithm of the interpolation function in 6th 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 (18)

Discrete coordinate data calculated by reading the coded pattern printed on the medium at predetermined time intervals received from the electronic pen or wand, and calculates the distance corresponding to the length of the trajectories from the coordinate data A terminal device,
Data communication means for receiving coordinate data;
Received by said data communication means, monotonically increasing or X coordinate multiple coordinates, in chronological order read the coordinate data calculated by said electronic pen or the wand along the trajectories After dividing into sections so that the decrease continues, interpolation is performed with multiple types of interpolation functions for each section, and the area enclosed by the line segment connecting each position coordinate with a straight line and the curves obtained by various interpolation functions is calculated and, employing the interpolation function of the smallest area among their areas, and calculating the line integral values for each interpolation function is employed, according to the trajectories by adding the line integral values for each interpolation function employing A terminal device comprising distance calculating means for calculating a distance. Discrete coordinate data calculated by reading the coded pattern printed on the medium at predetermined time intervals received from the electronic pen or wand, and calculates the distance corresponding to the length of the trajectories from the coordinate data A terminal device,
Data communication means for receiving coordinate data;
Received by said data communication means, monotonically increasing or X coordinate multiple coordinates, in chronological order read the coordinate data calculated by said electronic pen or the wand along the trajectories After dividing the sections so that the decrease is continuous and the angle formed by the three consecutive points does not become less than the threshold angle, interpolation is performed with multiple types of interpolation functions for each section, and each position coordinate is connected by a straight line. Calculate the area enclosed by the ellipse line and the curve obtained by various interpolation functions, adopt the interpolation function of the smallest area among those areas, calculate the line integral value of each adopted interpolation function, and calculate each line terminal device characterized by comprising a distance calculating means for calculating a distance corresponding to the trajectories by adding the integral value. Discrete coordinate data calculated by reading the coded pattern printed on the medium at predetermined time intervals received from the electronic pen or wand, and calculates the distance corresponding to the length of the trajectories from the coordinate data A terminal device,
Data communication means for receiving coordinate data;
Received by said data communication means, monotonically increasing or X coordinate multiple coordinates, in chronological order read the coordinate data calculated by said electronic pen or the wand along the trajectories After the sections are divided so that the decrease continues, the sections are further divided depending on whether the distance between adjacent position coordinates in each section is greater than or equal to a predetermined distance. Interpolate with multiple types of interpolation functions each time, calculate the area surrounded by the line segment connecting each position coordinate with a straight line and the curve obtained by various interpolation functions, and interpolation of the smallest area among those areas adopted function calculates the line integral values for each interpolation function is employed, while, in the section where the distance between the predetermined distance or more coordinates are not consecutive, Starring the sum of the linear distance between the position coordinates And, the terminal apparatus characterized by comprising a distance calculating means for calculating a distance corresponding to the trajectories by adding the total value of the line integral values and the linear distance of each interpolation function adopted. Discrete coordinate data calculated by reading the coded pattern printed on the medium at predetermined time intervals received from the electronic pen or wand, and calculates the distance corresponding to the length of the trajectories from the coordinate data A terminal device,
Data communication means for receiving coordinate data;
Received by said data communication means, monotonically increasing or X coordinate multiple coordinates, in chronological order read the coordinate data calculated by said electronic pen or the wand along the trajectories After dividing into sections so that the decrease is continuous and the angle formed by the three consecutive points does not become less than the threshold angle, it is further divided depending on whether or not the distance between adjacent position coordinates in each section is greater than or equal to a predetermined distance. In a section where distances between position coordinates that are greater than or equal to the predetermined distance are continuous, interpolation is performed with multiple types of interpolation functions for each section, and the line segments that connect the position coordinates with straight lines and curves obtained by various interpolation functions. Calculate the area to be enclosed, adopt the interpolation function of the smallest area among those areas, calculate the line integral value of each adopted interpolation function, and on the other hand, the distance between the position coordinates more than the predetermined distance Distance but in discontiguous sections, which calculates the total value of the linear distance between the position coordinates, and calculates the distance corresponding to the trajectories by adding the total value of the line integral values and the linear distance of each interpolation function employing A terminal device comprising a computing means. Discrete coordinate data calculated by reading the coded pattern of the medium on which the map area and the coded pattern are printed at predetermined time intervals are received from an electronic pen or a pen-type scanner, and the map data is used on the map area. a terminal device for calculating a distance on the earth's surface corresponding to the path indicated by the trajectories,
Data communication means for receiving coordinate data;
Received by said data communication means, monotonically increasing or X coordinate multiple coordinates, in chronological order read the coordinate data calculated by said electronic pen or the wand along the trajectories After dividing into sections so that the decrease continues, interpolation is performed with multiple types of interpolation functions for each section, and the area enclosed by the line segment connecting each position coordinate with a straight line and the curves obtained by various interpolation functions is calculated And adopting the interpolation function of the smallest area among those areas, calculating the line integral value of each adopted interpolation function, and adding the line integral values of each adopted interpolation function on the map area terminal device; and a distance calculating means for calculating a distance on the earth's surface corresponding to the trajectories. Discrete coordinate data calculated by reading the coded pattern of the medium on which the map area and the coded pattern are printed at predetermined time intervals are received from an electronic pen or a pen-type scanner, and the map data is used on the map area. a terminal device for calculating a distance on the earth's surface corresponding to the path indicated by the trajectories,
Data communication means for receiving coordinate data;
Received by said data communication means, monotonically increasing or X coordinate multiple coordinates, in chronological order read the coordinate data calculated by said electronic pen or the wand along the trajectories After dividing the sections so that the decrease is continuous and the angle formed by the three consecutive points does not become less than the threshold angle, interpolation is performed with multiple types of interpolation functions for each section, and each position coordinate is connected by a straight line. Calculate the area enclosed by the ellipse line and the curve obtained by various interpolation functions, adopt the interpolation function of the smallest area among those areas, calculate the line integral value of each adopted interpolation function, and calculate each line terminal device characterized by comprising a distance calculating means for calculating a distance on the earth's surface corresponding to the trajectories on the map area by adding the integral value. Discrete coordinate data calculated by reading the coded pattern of the medium on which the map area and the coded pattern are printed at predetermined time intervals are received from an electronic pen or a pen-type scanner, and the map data is used on the map area. a terminal device for calculating a distance on the earth's surface corresponding to the path indicated by the trajectories,
Data communication means for receiving coordinate data;
Received by said data communication means, monotonically increasing or X coordinate multiple coordinates, in chronological order read the coordinate data calculated by said electronic pen or the wand along the trajectories After the sections are divided so that the decrease continues, the sections are further divided depending on whether the distance between adjacent position coordinates in each section is greater than or equal to a predetermined distance. Interpolate with multiple types of interpolation functions each time, calculate the area surrounded by the line segment connecting each position coordinate with a straight line and the curve obtained by various interpolation functions, and interpolation of the smallest area among those areas adopted function calculates the line integral values for each interpolation function is employed, while, in the section where the distance between the predetermined distance or more coordinates are not consecutive, Starring the sum of the linear distance between the position coordinates And characterized by comprising a distance calculating means for calculating a distance on the earth's surface corresponding to the trajectories on the map area by adding the total value of the line integral values and the linear distance of each interpolation function employing Terminal device. Discrete coordinate data calculated by reading the coded pattern of the medium on which the map area and the coded pattern are printed at predetermined time intervals are received from an electronic pen or a pen-type scanner, and the map data is used on the map area. a terminal device for calculating a distance on the earth's surface corresponding to the path indicated by the trajectories,
Data communication means for receiving coordinate data;
Received by said data communication means, monotonically increasing or X coordinate multiple coordinates, in chronological order read the coordinate data calculated by said electronic pen or the wand along the trajectories After dividing into sections so that the decrease is continuous and the angle formed by the three consecutive points does not become less than the threshold angle, it is further divided depending on whether or not the distance between adjacent position coordinates in each section is greater than or equal to a predetermined distance. In a section where distances between position coordinates that are greater than or equal to the predetermined distance are continuous, interpolation is performed with multiple types of interpolation functions for each section, and the line segments that connect the position coordinates with straight lines and curves obtained by various interpolation functions. Calculate the area to be enclosed, adopt the interpolation function of the smallest area among those areas, calculate the line integral value of each adopted interpolation function, and on the other hand, the distance between the position coordinates more than the predetermined distance In the section but not continuous, and calculates the total value of the linear distance between the position coordinates, corresponding to the trajectories on the map area by adding the total value of the line integral values and the linear distance of each interpolation function employing A terminal device comprising distance calculating means for calculating a distance on the ground surface.   The terminal device according to claim 1, wherein the plurality of types of interpolation functions are a spline function and 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. Discrete coordinate data calculated by reading the coded pattern printed on the medium at predetermined time intervals received from the electronic pen or wand, and calculates the distance corresponding to the length of the trajectories from the coordinate data A program executed by a computer,
Data communication means for receiving coordinate data;
Received by said data communication means, monotonically increasing or X coordinate multiple coordinates, in chronological order read the coordinate data calculated by said electronic pen or the wand along the trajectories After dividing into sections so that the decrease continues, interpolation is performed with multiple types of interpolation functions for each section, and the area enclosed by the line segment connecting each position coordinate with a straight line and the curves obtained by various interpolation functions is calculated and, employing the interpolation function of the smallest area among their areas, and calculating the line integral values for each interpolation function is employed, according to the trajectories by adding the line integral values for each interpolation function employing A program for causing the computer to function as distance calculation means for calculating a distance. Discrete coordinate data calculated by reading the coded pattern printed on the medium at predetermined time intervals received from the electronic pen or wand, and calculates the distance corresponding to the length of the trajectories from the coordinate data A program executed by a computer,
Data communication means for receiving coordinate data;
Received by said data communication means, monotonically increasing or X coordinate multiple coordinates, in chronological order read the coordinate data calculated by said electronic pen or the wand along the trajectories After dividing the sections so that the decrease is continuous and the angle formed by the three consecutive points does not become less than the threshold angle, interpolation is performed with multiple types of interpolation functions for each section, and each position coordinate is connected by a straight line. Calculate the area enclosed by the ellipse line and the curve obtained by various interpolation functions, adopt the interpolation function of the smallest area among those areas, calculate the line integral value of each adopted interpolation function, and calculate each line a program characterized by causing the computer to function as a distance calculating means for calculating a distance corresponding to the trajectories by adding the integral value. Discrete coordinate data calculated by reading the coded pattern printed on the medium at predetermined time intervals received from the electronic pen or wand, and calculates the distance corresponding to the length of the trajectories from the coordinate data A program executed by a computer,
Data communication means for receiving coordinate data;
Received by said data communication means, monotonically increasing or X coordinate multiple coordinates, in chronological order read the coordinate data calculated by said electronic pen or the wand along the trajectories After the sections are divided so that the decrease continues, the sections are further divided depending on whether the distance between adjacent position coordinates in each section is greater than or equal to a predetermined distance. Interpolate with multiple types of interpolation functions each time, calculate the area surrounded by the line segment connecting each position coordinate with a straight line and the curve obtained by various interpolation functions, and interpolation of the smallest area among those areas adopted function calculates the line integral values for each interpolation function is employed, while, in the section where the distance between the predetermined distance or more coordinates are not consecutive, Starring the sum of the linear distance between the position coordinates And a program for causing the computer to function as a distance calculating means for calculating a distance corresponding to the trajectories by adding the total value of the line integral values and the linear distance of each interpolation function adopted. Discrete coordinate data calculated by reading the coded pattern printed on the medium at predetermined time intervals received from the electronic pen or wand, and calculates the distance corresponding to the length of the trajectories from the coordinate data A program executed by a computer,
Data communication means for receiving coordinate data;
Received by said data communication means, monotonically increasing or X coordinate multiple coordinates, in chronological order read the coordinate data calculated by said electronic pen or the wand along the trajectories After dividing into sections so that the decrease is continuous and the angle formed by the three consecutive points does not become less than the threshold angle, it is further divided depending on whether or not the distance between adjacent position coordinates in each section is greater than or equal to a predetermined distance. In a section where distances between position coordinates that are greater than or equal to the predetermined distance are continuous, interpolation is performed with multiple types of interpolation functions for each section, and the line segments that connect the position coordinates with straight lines and curves obtained by various interpolation functions. Calculate the area to be enclosed, adopt the interpolation function of the smallest area among those areas, calculate the line integral value of each adopted interpolation function, and on the other hand, the distance between the position coordinates more than the predetermined distance Distance but in discontiguous sections, which calculates the total value of the linear distance between the position coordinates, and calculates the distance corresponding to the trajectories by adding the total value of the line integral values and the linear distance of each interpolation function employing A program for causing the computer to function as a calculation means. Discrete coordinate data calculated by reading the coded pattern of the medium on which the map area and the coded pattern are printed at predetermined time intervals are received from an electronic pen or a pen-type scanner, and the map data is used on the map area. a program executed by a computer for calculating the distance on the ground which corresponds to a path indicated by the trajectories,
Data communication means for receiving coordinate data;
Received by said data communication means, monotonically increasing or X coordinate multiple coordinates, in chronological order read the coordinate data calculated by said electronic pen or the wand along the trajectories After dividing into sections so that the decrease continues, interpolation is performed with multiple types of interpolation functions for each section, and the area enclosed by the line segment connecting each position coordinate with a straight line and the curves obtained by various interpolation functions is calculated And adopting the interpolation function of the smallest area among those areas, calculating the line integral value of each adopted interpolation function, and adding the line integral values of each adopted interpolation function on the map area program for causing the computer to function as a distance calculating means for calculating a distance on the earth's surface corresponding to the trajectories. Discrete coordinate data calculated by reading the coded pattern of the medium on which the map area and the coded pattern are printed at predetermined time intervals are received from an electronic pen or a pen-type scanner, and the map data is used on the map area. a program executed by a computer for calculating the distance on the ground which corresponds to a path indicated by the trajectories,
Data communication means for receiving coordinate data;
Received by said data communication means, monotonically increasing or X coordinate multiple coordinates, in chronological order read the coordinate data calculated by said electronic pen or the wand along the trajectories After dividing the sections so that the decrease is continuous and the angle formed by the three consecutive points does not become less than the threshold angle, interpolation is performed with multiple types of interpolation functions for each section, and each position coordinate is connected by a straight line. Calculate the area enclosed by the ellipse line and the curve obtained by various interpolation functions, adopt the interpolation function of the smallest area among those areas, calculate the line integral value of each adopted interpolation function, and calculate each line a program characterized by causing the computer to function as a distance calculating means for calculating a distance on the earth's surface corresponding to the trajectories on the map area by adding the integral value. Discrete coordinate data calculated by reading the coded pattern of the medium on which the map area and the coded pattern are printed at predetermined time intervals are received from an electronic pen or a pen-type scanner, and the map data is used on the map area. a program executed by a computer for calculating the distance on the ground which corresponds to a path indicated by the trajectories,
Data communication means for receiving coordinate data;
Received by said data communication means, monotonically increasing or X coordinate multiple coordinates, in chronological order read the coordinate data calculated by said electronic pen or the wand along the trajectories After the sections are divided so that the decrease continues, the sections are further divided depending on whether the distance between adjacent position coordinates in each section is greater than or equal to a predetermined distance. Interpolate with multiple types of interpolation functions each time, calculate the area surrounded by the line segment connecting each position coordinate with a straight line and the curve obtained by various interpolation functions, and interpolation of the smallest area among those areas adopted function calculates the line integral values for each interpolation function is employed, while, in the section where the distance between the predetermined distance or more coordinates are not consecutive, Starring the sum of the linear distance between the position coordinates And, that causes the computer to function as distance calculating means for calculating a distance on the earth's surface corresponding to the trajectories on the map area by adding the total value of the line integral values and the linear distance of each interpolation function employing A featured program. Discrete coordinate data calculated by reading the coded pattern of the medium on which the map area and the coded pattern are printed at predetermined time intervals are received from an electronic pen or a pen-type scanner, and the map data is used on the map area. a program executed by a computer for calculating the distance on the ground which corresponds to a path indicated by the trajectories,
Data communication means for receiving coordinate data;
Received by said data communication means, monotonically increasing or X coordinate multiple coordinates, in chronological order read the coordinate data calculated by said electronic pen or the wand along the trajectories After dividing into sections so that the decrease is continuous and the angle formed by the three consecutive points does not become less than the threshold angle, it is further divided depending on whether or not the distance between adjacent position coordinates in each section is greater than or equal to a predetermined distance. In a section where distances between position coordinates that are greater than or equal to the predetermined distance are continuous, interpolation is performed with multiple types of interpolation functions for each section, and the line segments that connect the position coordinates with straight lines and curves obtained by various interpolation functions. Calculate the area to be enclosed, adopt the interpolation function of the smallest area among those areas, calculate the line integral value of each adopted interpolation function, and on the other hand, the distance between the position coordinates more than the predetermined distance In the section but not continuous, and calculates the total value of the linear distance between the position coordinates, corresponding to the trajectories on the map area by adding the total value of the line integral values and the linear distance of each interpolation function employing A program for causing the computer to function as distance calculation means for calculating a distance on the ground surface.

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