JP2007192698A - Map processing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a map processing apparatus capable of scrolling a map along a road matching with an intention of a user with an easy operation. <P>SOLUTION: When the user traces a touch panel 33 from a contact coordinate Pt1 to a contact coordinate Pt2, a display 32 scrolls the map so that the road shape Rs passes the center O of a display region in the direction opposite to the tracing direction. When a junction of the road shape Rs passes the center O of the display region, the display 32 scrolls the map so that the road shape Rs1 having the same road type as the road shape Rs passes the center O of the display region in the direction opposite to the tracing direction. If the road shape Rs1 does not exist, the display 32 stops the scroll when the junction of the road shape Rs passes the center O of the display region. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a map processing device that processes map data, and more particularly to a navigation device, a PDA, a mobile phone, and the like.

As background technology, the map image is gradually scrolled to the next major intersection along the road where the vehicle position exists in the direction indicated by the joystick using the vehicle position data, map data and data from the joystick. A navigation device is known (see, for example, Patent Document 1). According to this technique, the user can recognize the facility along the road where the vehicle position exists by a simple operation with a joystick.
JP 2004-212255 A

  According to the background art, a map cannot be scrolled along an arbitrary road. However, when a user examines a facility along a road, it is in accordance with the user's intention to extend the investigation object to a road other than the road where the vehicle position exists. On the other hand, when the user checks whether there is a way out, it is contrary to the user's intention to limit the investigation target to the road where the vehicle position exists. That is, it is necessary to scroll the map along a road that matches the user's intention.

  A map processing apparatus according to the present invention is a map processing apparatus that processes map data and output data output from a touch panel, and is obtained from the map data corresponding to contact coordinates obtained from the output data on a display. A control unit that scrolls along the road shape displayed in the display coordinates is provided. The interpretation of the lexical terms in the present invention is as follows.

  “Map data” is data having road data as at least an element. “Map data” generally includes road data, background data, facility data, character data, and the like. The road data includes road shape data related to the road shape. The “map data” only needs to be provided on various media such as a CD-ROM, DVD-ROM, HDD, semiconductor memory, and communication line.

  The “touch panel” is provided on the display area of the “display” in a state where the “contact coordinates” and the “display coordinates” coincide with each other.

  “Determined from” means that an object to be obtained may be obtained at any part. For example, the display coordinates provided inside the display may obtain the contact coordinates using the output value output from the touch panel.

  “Obtained” means that it does not matter whether the means for obtaining is an operation or a table.

  The “road shape” is the shape of the displayed road. For example, in the KIWI map format, “road shape” is expressed by link shape data having coordinates as one element (“car navigation system—open data structure KIWI and its usage—” 2003, Kyoritsu Publishing Co., Ltd.). See Publish).

  “Correspondence” means that one and the other match or that one and the other match. Whether or not it can be regarded as matching is determined using an operation threshold value or the like.

  “Scroll along the road shape” means that the shape of the locus drawn by the points on the map accompanying the scroll is the same as or substantially the same as the road shape. For example, if the road shape is annular, the points on the map will draw an annular locus with scrolling.

  The “control unit” is a part that executes control by cooperation of hardware or hardware and software.

  Preferably, the “control unit” is configured to scroll the map in a direction determined from the contact coordinates on the display when the contact coordinates correspond to the display coordinates at a plurality of locations. “The contact coordinates and the display coordinates correspond to each other at a plurality of locations” means that the user traces the road shape with an object such as a finger and that the user points out the road shape with an object such as a finger. It is a concept that includes. As the “direction determined from the contact coordinates”, the moving direction of “contact coordinates” and both the moving direction and the opposite direction can be considered.

  Preferably, when the road shape is branched, the “control unit” preferably has a branch destination having a road type that is the same as the road type of the branch source, and the road related to the branch destination with respect to the display. Scroll along the shape, and on the other hand, if there is no branch destination that has the same road type as the road type of the branch source, the map is not scrolled along the road shape of the branch destination with respect to the display It is.

  Preferably, when a process related to route guidance is being executed, the “control unit” preferably maps a map to the guide route with respect to the display if the contact coordinates correspond to display coordinates of a road shape related to the guide route. Scrolling in the direction determined from the contact coordinates along the road shape.

  Preferably, the “control unit” preferably includes a gas station, a convenience store, a road station, a service area, and a parking area along the road according to the road shape when the process related to the scroll along the road shape is being executed. If any facility exists, scrolling is stopped with the facility as the center of the display area.

  The present invention has an effect that a map can be scrolled along a road that matches a user's intention by a simple operation.

  A navigation apparatus which is the best mode for carrying out the map processing apparatus according to the present invention is shown in FIGS.

  <Hardware Configuration> The hardware configuration of the navigation apparatus 1 according to the present embodiment is shown in FIG. The navigation device 1 executes an I / O 11 for inputting / outputting data, an HDD 12 (corresponding to a “control unit”) for storing various programs and various data, a ROM 13 for storing basic programs such as BIOS, and the programs. CPU 14 (corresponding to “control unit”), RAM 15 for holding data, audio LSI 16 for processing audio data, drawing LSI 17 (corresponding to “control unit”) for processing image data, and image data A VRAM 18 (corresponding to a “control unit”) to be held and a GPS unit 19 for processing GPS data are provided. Each piece of hardware is connected by a bus line.

  On the input side of the I / O 11, a speed sensor 21 that outputs speed data corresponding to the speed and an azimuth sensor 22 that outputs azimuth data corresponding to the azimuth are connected.

  On the output side of the I / O 11, a speaker 31 that outputs sound corresponding to the sound data and a display 32 that displays an image corresponding to the image data are connected.

  A touch panel 33 that outputs different data (corresponding to “output data”) for each contact coordinate Pt on the display area is connected to the display 32. The display 32 is provided with a microcomputer (not shown) that calculates contact coordinates Pt from data output from the touch panel 33. When the processing on the data output from the touch panel 33 is completed, the microcomputer transmits the contact coordinates Pt to the I / O 11 and outputs interrupt data to the CPU 14 through an interrupt line.

  The HDD 12 stores map data in the KIWI format (see “Car Navigation System—Public Data Structure KIWI and its Usage—2003” issued by Kyoritsu Publishing Co., Ltd.) (see FIG. 2). The map data includes a road data frame for displaying a road shape and a background data frame for displaying a background image. The road data frame includes a link string header, link string shape data, and node / link connection data. The link row shape data is composed of a plurality of link shape data. The link shape data includes a link attribute, an X coordinate (a parcel coordinate system), and a Y coordinate (a parcel coordinate system).

  In addition to the known navigation program, the HDD 12 functions as a control unit that causes the display 32 to scroll along the road shape Rs displayed on the display coordinates Pp corresponding to the contact coordinates Pt and obtained from the map data. The control program for making it memorize | store is stored.

  <Processing> The processing of the navigation device 1 is shown in FIG. The CPU 14 expands the map data and the control program stored in the HDD 12 in the RAM 15, receives the interrupt data, and executes the following processing.

  The CPU 14 causes the RAM 15 to hold the contact coordinates Pt1 at the time of interruption and the road type “r = 1” to be searched (step S1). The road type is defined by a link string header included in the road data frame. In the present embodiment, the expressway, the national road, and the prefectural road are defined as a road type “1”, a road type “2”, and a road type “3”, respectively (see FIG. 4).

  When the road type or the like is stored in step S1, the CPU 14 calculates the display coordinates Pp related to the road shape Rs using the link shape data included in the road data frame (step S2). In the present embodiment, since the link shape data defines the X coordinate and Y coordinate of the road shape Rs in the parcel coordinate system, these coordinates are converted into the display coordinates Pp by the parallel movement algorithm. The display coordinates Pp related to the road shape Rs form a line segment in groups.

  When the display coordinate Pp is calculated in step S2, the CPU 14 determines whether or not the contact coordinate Pt1 matches the display coordinate Pp (step S3). In the present embodiment, the operation threshold is used, and if the difference between the contact coordinates Pt1 and the display coordinates Pp is within the operation threshold, the two are “matched”.

  If it is determined in step S3 that the contact coordinates Pt1 and the display coordinates Pp do not match (“≠” in S3), the CPU 14 causes the RAM 15 to hold the road type “r = r + 1” (step S4). . That is, the road type to be searched is switched.

  When the road type “r = r + 1” is held in step S4, the CPU 14 determines whether or not the road type r has reached n (step S5). In the present embodiment, there are three road types, “1”, “2”, and “3”, and therefore n is “3”.

  If it is determined in step S5 that the road type r has not reached n (No in S5), the CPU 14 returns to the process in step S2. On the other hand, when it is determined in step S5 that the road type r has reached n (Yes in S5), the CPU 14 ends the interrupt process.

  If it is determined in step S3 that the contact coordinates Pt1 coincide with the display coordinates Pp (“=” in S3), the CPU 14 determines whether or not the contact coordinates Pt2 (where Pt2 ≠ Pt1) is held in the RAM 15. Is determined (step S6).

  If it is determined in step S6 that the contact coordinates Pt2 are not held in the RAM 15 (No in S6), the CPU 14 ends the interrupt process.

  On the other hand, if it is determined in step S6 that the contact coordinates Pt2 are held in the RAM 15 (Yes in S6), the CPU 14 determines whether or not the contact coordinates Pt2 and the display coordinates Pp match (step S7). ). In the present embodiment, an operation threshold is used, and if the difference between the contact coordinates Pt2 and the display coordinates Pp is within the operation threshold, they are assumed to “match”.

  If it is determined in step S7 that the contact coordinates Pt2 and the display coordinates Pp do not match (“≠” in S7), the CPU 14 ends the interrupt process.

  On the other hand, if it is determined in step S7 that the contact coordinates Pt2 and the display coordinates Pp match (“=” in S7), the CPU 14 uses the contact coordinates Pt1 and the contact coordinates Pt2 to display the road shape Rs in the display area. A direction (corresponding to “direction determined from contact coordinates”, hereinafter referred to as a scroll direction) is calculated (step S8). In the present embodiment, the scroll direction is the same as the direction (tracing direction) of the contact coordinates Pt2 viewed from the contact coordinates Pt1 (see FIG. 4).

  When the scroll direction is calculated in step S8, the CPU 14 determines whether or not the road shape Rs related to the display coordinates Pp is branched using the node / link connection data included in the road data frame (step S9). ). In this embodiment, since the node / link connection data defines the connection relationship, this connection relationship is referred to.

  When it is determined in step S9 that the road shape Rs related to the display coordinate Pp is branched (Yes in S9), the CPU 14 uses the link row header included in the road data frame to relate to the display coordinate Pp. It is determined whether or not the road shape Rs and the road shape Rsx related to the display coordinates Ppx have the same road type (step S10).

  If it is determined in step S10 that the road shape Rs and the road shape Rsx have the same road type (Yes in S10), the CPU 14 determines that the road shape Rs and the road shape Rsx are the center O of the display area (the surrounding area). (Corresponding to “along the road shape”) (step S11). In the present embodiment, since the road shape Rs1 has the same road type as the road shape Rs, the road shape Rs and the road shape Rs1 pass through the center of the display area.

  If it is determined in step S9 that the road shape Rs is not branched (No in S9) or if it is determined in step S10 that the road shape Rs and the road shape Rsx do not have the same road type (S10). No), the CPU 14 determines that only the road shape Rs passes through the center O (including the periphery thereof) of the display area (step S12).

  When the process of step S11 or the process of step S12 is executed, the CPU 14 outputs one of the result obtained in step S8, the result obtained in step S11, and the result obtained in step S12 as control data ( Step S13). The drawing LSI 17 determines a display area from the drawing area of the VRAM 18 using the control data output from the CPU 14. The drawing LSI 17 outputs data corresponding to the display area from the drawing area of the VRAM 18 to the display 32.

  <Display Example> A display example according to the present embodiment is shown in FIG. When the user traces the touch panel 33 from the contact coordinates Pt1 to the contact coordinates Pt2 (see FIG. 5A), the display 32 is arranged so that the road shape Rs passes through the center O of the display area in the same direction as the tracing direction. Scroll the map (background and road shape) (see FIG. 5 (b)). When the branch point of the road shape Rs passes through the center O of the display area, the display 32 causes the road shape Rs1 having the same road type as the road shape Rs to pass through the center O of the display area in the same direction as the tracing direction. In this way, the map (background and road shape) is scrolled (see FIG. 5B, which is realized by the processing in step S11). If the road shape Rs1 does not exist, the display 32 stops scrolling when the branch point of the road shape Rs passes the center O of the display area (implemented by the process of step S12).

  <Effect in this Embodiment> According to this embodiment, the display 32 scrolls the map along the road shape Rs displayed at the display coordinates Pp corresponding to the contact coordinates Pt1. Therefore, the map can be scrolled along an arbitrary road by a simple operation of touching the touch panel 33.

  According to the present embodiment, when the contact coordinates Pt1 and the contact coordinates Pt2 correspond to the two display coordinates Pp related to the road shape Rs, that is, when the user traces the road shape Rs with an object such as a finger, the display 32 Scrolls the map in the same direction as the tracing direction. Therefore, the map can be scrolled in an arbitrary direction by a simple operation of tracing the road shape Rs via the touch panel 33.

  According to the present embodiment, when the road shape Rs branches, the display 32 displays the map if the branch destination road shape Rsx has the same road type as that of the branch road shape Rs. Scroll along the road shape Rsx associated with the branch destination. On the other hand, if the road shape Rsx at the branch destination does not have the same road type as that of the road shape Rs at the branch source, the display 32 does not scroll the map along the road shape Rsx at the branch destination (road Scroll only along the shape Rs). Since the user has an intention to obtain information relating to a road having the same road type, scrolling that matches the user's intention can be realized.

  <Modification 1> In this embodiment, it is not asked whether or not the road shape Rs is a guide route. If the process related to the route guidance is being executed, if the contact coordinates Pt1 correspond to the display coordinates of the road shape related to the guidance route, the display 32 displays the contact coordinates along the road shape Rs related to the guide route. You may scroll in the direction calculated | required from Pt1. According to this embodiment, even in the case where there are not a plurality of contact coordinates Pt, scrolling is started in the direction intended by the user.

  <Modification 2> In the present embodiment, the image displayed at the center O of the display area is not questioned when scrolling is stopped. If a process related to scrolling along the road shape Rs is being executed, any facility of a gas station, a convenience store, a road station, a service area, and a parking area exists along the road related to the road shape Rs. For example, the display 32 may stop scrolling with this facility as the center O of the display area. According to this embodiment, the facilities that are likely to be landmarks are displayed in the center, and the user can easily recognize the map.

  <Modification 3> In the present embodiment, the road shape Rs passes through the center O of the display area, but the road shape Rs is displayed at a specific point (for example, the display coordinates P (Pt1 corresponding to the contact coordinates Pt1). )) May be passed.

  <Modification 4> In the present embodiment, the drawing area is designed to be larger than the display area, but the drawing area and the display area may be the same (so-called redraw method). In this case, the drawing data is developed in the drawing area of the VRAM 18 so that the center O of the display area exists in the road shape Rs and the road shape Rsx.

  <Modification 5> In the present embodiment, the scroll direction is obtained from a plurality of contact coordinates Pt, but the scroll direction may be obtained from a traveling direction or the like. This is because it is sufficient to specify the scroll direction as long as it reflects the user's intention.

  INDUSTRIAL APPLICABILITY The present invention has an effect that a map can be scrolled along a road that matches a user's intention by a simple operation, and is useful as a navigation device, a PDA, a mobile phone, and the like.

1 is a hardware configuration diagram showing the configuration of a navigation device that is the best mode for carrying out a map processing device according to the present invention. Conceptual diagram showing the map format in the present embodiment Flow chart showing the flow of processing in the present embodiment The figure which shows the definition of the term in this Embodiment (A) The figure which shows the relationship between a contact coordinate and the display coordinate which concerns on a road shape (b) The figure which shows the relationship between a display area and a drawing area

Explanation of symbols

1 Navigation device (map processing device)
12 HDD (control unit)
14 CPU (control unit)
17 Drawing LSI (control unit)
32 Display 33 Touch panel

Claims (5)

A map processing device for processing map data and output data output on a touch panel,
A map processing apparatus, comprising: a control unit that causes a display to scroll along a road shape corresponding to contact coordinates obtained from the output data and displayed at display coordinates obtained from the map data. 2. The map processing according to claim 1, wherein when the contact coordinates correspond to the display coordinates at a plurality of locations, the control unit causes the display to scroll the map in a direction determined from the contact coordinates. apparatus. The control unit, when the road shape branches, if there is a branch destination having a road type that is the same as the road type of the branch source, the control unit displays a map along the road shape related to the branch destination with respect to the display. The map is scrolled, and on the other hand, if there is no branch destination having the same road type as that of the branch source, the map is not scrolled along the road shape of the branch destination on the display. The map processing apparatus according to claim 1 or 2. When the process related to route guidance is being executed, the control unit changes the map to the road shape related to the guide route with respect to the display if the contact coordinates correspond to the display coordinates of the road shape related to the guide route. The map processing device according to claim 1, wherein the map processing device is scrolled in a direction along the contact coordinates. When the process related to the scroll along the road shape is being executed, the control unit is provided with any facility of a gas station, a convenience store, a road station, a service area, and a parking area along the road according to the road shape. 5. The map processing apparatus according to claim 1, wherein scrolling is stopped with the facility as the center of the display area.

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