JP2005326653A - Map display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To plainly show, on a screen, the positional relation between the present position and a map displayed on a scroll screen. <P>SOLUTION: A map display device comprises a display means 20, having a screen for displaying map information, and an input means 10 for receiving the input of control information including a map information scroll instruction and the detected present position. When the display means 20 receives a prescribed scroll instruction via the input means 10, a screen 23 is divided into a first display area 231, where the map information of the present position and around the present position is displayed and a second display area 232 where the map information is being scrolled, and map information with a scale smaller than the first display area 231 is displayed in the second display area 232. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a map display device, a display method, and a map display program that divides a screen to display map information when scrolling a map, and in particular, a relative positional relationship between a current position and a scroll map while reducing processing load. The present invention relates to a map display device and the like for performing display that is easy to grasp.

If the current position is off the display screen due to the map scrolling operation, the map information near the current position is made smaller than the scroll start time, and the map information near the position instructed by the scrolling operation A technique is known in which the map information is set to the same scale as the scroll start point and the map information is displayed on a display screen (see Patent Document 1). According to this map display device, the current position can be displayed while displaying a detailed map in the vicinity of an arbitrary position that the user wants to check.
Japanese Patent Laid-Open No. 10-320694

However, in the prior art, the current position is displayed with a small scale (wide area map) and the vicinity of an arbitrary position that the user wants to confirm is displayed with a large scale (detailed map). When it is far away from the position, there is a problem that it takes time to scroll.
It is an object of the present invention to be able to grasp map information at a current position and map information at an arbitrary position desired by a user on the same screen and quickly display map information at an arbitrary position.

  In the present invention, when a predetermined scroll command is acquired, a screen for displaying map information is divided, map information around the current position including the current position is displayed in the first display area, and map information being scrolled is displayed in the second display. The map information displayed on the area and the map information displayed on the second display area are displayed on a smaller scale than the first display area.

  As a result, even when a map of an area away from the current position is scrolled, the current position and the map information at an arbitrary position desired by the user can be grasped on the same screen, and the map at an arbitrary position Information can be displayed quickly.

  Hereinafter, two embodiments according to the present invention will be described with reference to the drawings. In the present embodiment, a map display device 100 mounted on a vehicle together with the navigation device 1 will be described as an example.

<First Embodiment>
FIG. 1 shows a block configuration of the map display device 100 according to the first embodiment. The map display device 100 of the present embodiment is connected to the navigation device 1 so as to be able to exchange information.

  As shown in FIG. 1, the map display device 100 according to the present embodiment includes an input unit 10 and a display unit 20. Specifically, at least a ROM that stores a program for displaying map information based on the acquired control information, and an arithmetic device (CPU, CPU) that functions as the display means 20 by executing the program stored in the ROM. MPU, IC, DSP, FPGA, etc.) and a RAM functioning as storage means for at least temporarily storing information necessary for program execution.

Each configuration will be described below.
The input unit 10 includes a pointing device 11 and receives an input of a control command to the display unit 20. The pointing device 11 is not particularly limited, and push buttons (command buttons), toggle buttons, joysticks, jog dials, mice, keyboards, trackballs, track bats, tablets, and the like can be used. The user uses the pointing device 11 to input a control command related to display of map information. The control command includes at least a scroll command, current position information, and a detailed map reference command. The scroll command is a command for moving only data in an arbitrary direction in order to display an invisible part when the data exceeds the display size of the screen and cannot be displayed entirely. When a scroll command is input, the map information displayed on the screen is moved in a predetermined direction. The current position information is information for specifying the current position to be displayed. The input unit 10 receives an input of a current position detected by a current position detection unit 30 having a GPS (Global Positioning System) 31. The detailed map reference command is a command for displaying a detailed map of an area included in the map information being scrolled on the screen.

  The display unit 20 includes a control information acquisition unit 21, a display control unit 22, and a screen 23, and displays map information based on the acquired control information. The control information acquisition unit 21 acquires control information input via the input unit 10. The control information acquisition unit 21 acquires at least a scroll command, current position information, and a detailed map display command.

  The screen 23 is a so-called display. The screen 23 includes a first display area 231, a second display area 232, and a third display area 233, and different map information can be displayed at different scales in the respective areas.

  The display control unit 22 controls display processing of map information on the screen 23. When the display control unit 22 of the present embodiment acquires a predetermined scroll command, the display control unit 22 divides the screen 23 to form a first display area 231 and a second display area 232. The display control unit 22 displays map information around the current position including the current position in the first display area 231, and displays the map information being scrolled in the second display area 232.

  The display control unit 22 includes a first display region control unit 221 and a second display region control unit 222, and the first display region 231 (currently the display area of the map information being scrolled) is displayed in the second display region 232 (the display region of the map information being scrolled). Map information of a different scale from the display area of the map information including the position) is displayed. The map display control in the first display area 231 is performed by the first display area control unit 221, and the map display control in the second display area 232 is performed by the second display area control unit 222.

  In the present embodiment, wide-area map information having a smaller scale than the first display area 231 (the display area for the map information including the current position) is displayed in the second display area 232 (the display area for the map information being scrolled). To do. By displaying the map information being scrolled at a larger scale than the map information at the start of scrolling, the scroll speed (the movement speed of the map information) can be increased. Even when the user scrolls a map of a region far from the current position, the user can grasp the current position and map information at an arbitrary position desired by the user on the same screen, and the map at an arbitrary position. Information can be displayed quickly.

  The display control unit 22 determines the scale of the second display area 232 according to the input amount to the input means 10 operated by the user. The input amount to the input means 10 is the scroll operation time, the amount of movement of map information by scrolling, the pressure at the time of input to the pointing device 11, the initial speed of the cursor indicating the scroll destination, and the amount of movement of the cursor indicating the scroll destination ( Movement distance or movement time), an inclination angle when the joystick 11 is input, and the like. These are detected by the input amount detection unit 111. The display control unit 22 reduces the scale of the second display area 232 as the scroll operation time is longer, and reduces the scale of the second display area 232 as the amount of movement of the map information by scrolling is larger. The scale of the second display area 232 is reduced as the time pressure increases, and the scale of the second display area 232 is reduced as the initial speed of the cursor indicating the scroll destination increases, and the amount of movement of the cursor indicating the scroll destination (movement distance) The scale of the second display area 232 is reduced as the time (or the movement time) increases, and the scale of the second display area 232 is reduced as the tilt angle at the time of input of the joystick 11 increases. In the above-mentioned conditions such as a long scroll operation time, the user's intention to scroll the map information to a position distant from the current position is inferred. Therefore, in this embodiment, the scrolled map information is displayed in a wide area. . Thereby, the moving speed of the map information by scrolling can be increased, and the operability at the time of scrolling can be improved. Note that, from the viewpoint of improving the processing speed, it is preferable to associate the relationship between the input amount and the scale in advance.

  The display control unit 22 acquires the scroll direction included in the scroll command, forms the second display area 232 in the area on the scroll direction side of the screen, and the first display area 231 in the area opposite to the screen scroll direction. Form. Since the positional relationship between the first display area 231 and the second display area is determined based on the scroll direction, the directions of the first display area 231 and the second display area are not greatly different from each other. The direction of feature lines such as railways does not differ greatly. That is, the directions of the map information in the first display area 231 and the second display area 232 can be easily aligned, and the connection relationship between them can be easily shown.

  Specifically, the screen of the present embodiment is rectangular, and the first display area 231 is formed near the edges of the four sides of the screen or near the apexes of the four points. Although not particularly limited, the first display area 231 is any one of the upper edge area, the lower edge area, the right edge area, the left edge area, the upper right vertex area, the lower right vertex area, the upper left vertex area, and the lower left vertex area of the screen. It is preferable to be formed in the region. For example, when the scroll direction is included in the predefined “upward direction of the screen” range, the first display area 231 is formed in the lower edge area of the screen, and the second display area 232 is formed in the upper edge area of the screen. To do. When the scroll direction is included in the predefined “upper right direction of the screen” range, the first display area 231 is formed in the lower left apex area of the screen, and the second display area 232 is formed in the upper right apex area of the screen.

  In the present embodiment, each piece of map information is displayed on the screen 23 such that the direction of the map information displayed in the first display area 231 and the direction of the map information displayed in the second display area 232 are substantially the same direction. That is, when the map information displayed in the first display area 231 is displayed as a so-called heading up in which the traveling direction of the vehicle is upward, the map information displayed in the second display area 232 is also displayed as a heading up. If the map information to be displayed in the first display area 231 is displayed as so-called north up with the north direction of latitude and longitude, the map information to be displayed in the second display area 232 is also displayed as north up. Like to do. As a result, the user can accurately grasp the relative positional relationship between the current position shown in the first display area 231 and the area being scrolled in the second display area 232.

  When the feature line included in the map information displayed in the first display area 231 and the feature line included in the map information displayed in the second display area 232 are common, the display control unit 22 displays each feature line as the first. Each map information is displayed so that it may continue in the boundary part of the display area 231 and the 2nd display area 232. Here, the characteristic line is information corresponding to the location of an expressway, a main road, a railway, or a river included in the map information. By making a common feature line included in each piece of map information connect at the boundary region between the first display region 231 and the second display region 232, the relative positional relationship between the two pieces of map information can be shown. The display control unit 22 of the present embodiment displays the map information displayed in the first display area 231 so that the common feature line is continuous at the boundary area between the first display area 231 and the second display area 232. Each map information is displayed by changing the range and / or the display range of the map information displayed in the second display area 232. In addition, the display control unit 22 according to the present embodiment displays the map information displayed in the first display area 231 so that the common feature line is continuous at the boundary area between the first display area 231 and the second display area 232. The map information is displayed by changing the aspect ratio of the map information and / or the aspect ratio of the map information displayed in the second display area 232. As a result, the user can accurately grasp the relative positional relationship between the current position indicated in the first display area 231 and the area being scrolled in the second display area.

  Further, when the display control unit 22 acquires a detailed map display command for displaying detailed map information of the map information displayed in the second display region 232 after the scroll command, the display control unit 22 displays at least a part of the second display region 232. A third display area 233 is newly formed so as to overlap, and the map information of a predetermined area including a predetermined point is displayed on the formed third display area 233 at a scale larger than that of the second display area 232. The detailed map display command of the present embodiment is a command that includes information indicating an arbitrary point in the map information displayed in the second display area 232 and displays the detailed information of the point. For example, when the operation of pressing the joystick 11 after scrolling is defined as a detailed map display command, the display control unit 22 includes a point indicated when the scrolling is stopped when the joystick 11 is pressed. Detailed map information of the area is displayed in the third display area 233. Thereby, the detailed information of the arbitrary points which the user is looking for after scrolling can be presented to the user. The scale of the third display area is larger than the scale of the second display area, and is determined by the display control unit 22. The third display area control unit 223 displays map information in the third display area based on the determined scale. The scale of the map information displayed in the third display area 233 is preferably the same as the scale of the map information displayed before the screen 23 is divided (that is, the scale of the first display area). This is because the map information of the same scale as the map information displayed before scrolling is considered easy to see for the user.

  In addition, the display control unit 22 refers to an arbitrary point (a point designated by the user) displayed in the third display region 233 and an arbitrary point (a point designated by the user) displayed in the second display region 232. It is preferable that the same position on the screen 23, that is, these two points on the screen 23 are the same position and are displayed with different scales. This is because if the point indicated in the second display region 232 is displayed at the same position in the third display region 233, the user can find the point immediately.

  When the display control unit 22 obtains a detailed map display command indicating an arbitrary point in the map information displayed in the second display region 232 after the scroll command, the display control unit 22 forms the third display region 233 and first The formation of the display area 231 may be canceled. This is because the necessity of the current position information is reduced while confirming an arbitrary point designated by the user. Further, by releasing the first display area 231, the second display area 232 and the third display area 233 can be displayed using the entire screen 23.

Next, the operation of the first embodiment will be described with reference to FIGS.
FIG. 2 shows a flowchart showing a control procedure of the map display device 100 of the present embodiment, and FIG. 3 shows a display example of map information corresponding to the control procedure.
When the navigation device 1 is powered on, the map display device 100 system is activated (S200). The map display device 100 of the present embodiment displays map information around the current position on the screen 23 including its current position P at the time of activation. The display example is shown in FIG. At this time, no scroll command is input, and the joystick 11 as the pointing device 11 is in a neutral state.

  When the user operates the joystick 11 to input a scroll command (Yes in S201), the control information acquisition unit 21 of the display unit 20 acquires the scroll command. The display control unit 22 scrolls the map information displayed on the screen 23 based on the scroll command acquired by the control information acquisition unit 21 (S202). As shown in FIG. 3B, when the user moves the joystick 11 upward, the map information moves in the a direction (upward).

  Prior to screen division, the display control unit 22 of the present embodiment determines whether or not the current position has moved out of the screen 23 by scrolling (whether the current position is not displayed on the screen 23) (S203). ). As shown in FIG. 3B, when the current position P goes out of the screen 23 (Yes in S203), the display control unit 22 divides the screen 23 to generate a first display area 231 and a second display area. 232 is formed (S204). This state is shown in FIG. The display control unit 22 displays map information including the current position P in the first display area 231, and displays the scrolling map information in the second display area 232. The positions on the screen 23 where the first display area 231 and the second display area 232 are formed are preferably determined according to the scroll direction. This process will be described later.

  Next, the display control unit 22 changes the scale of the second display area (S205). The display control unit 22 sets the scale of the map information displayed in the second display area 232 to a scale different from the scale of the map information displayed in the first display area 231. In this example, the scale of the map information displayed in the second display area 232 is made smaller than the scale of the map information displayed in the first display area 231, and wide area map information is displayed in the second display area 232. In the second display area 232 shown in FIG. 3C, a display example of wide area map information whose scale is (1/4) times the scale of the first display area 231 is shown.

  The display control unit 22 preferably determines the scale of the second display area 232 according to the input amount to the input unit 10. In the present embodiment, when the input amount applied to the pointing device 11 during scrolling is large, the scale is reduced. This is the scroll operation time, the amount of movement of the map information by scrolling, the pressure at the time of input to the pointing device 11, the initial speed of the cursor indicating the scroll destination, the amount of movement of the cursor indicating the scroll destination (movement distance or movement time), When the tilt angle at the time of input of the joystick 11 is large, it is considered that the search target point is far away, and the scroll amount per operation can be increased by displaying the map information in a wide area with a small scale. This is because it is considered that the map information of the point can be accessed quickly.

  The display control unit 22 according to the present embodiment displays each map information so that the direction of the map information displayed in the first display area 231 and the direction of the map information displayed in the second display area 232 are the same direction. indicate. By unifying the two map directions, the display is simplified and the user can be prevented from being confused. Information indicating the direction of the map may be shown in either the first display area 231 or the second display area 232, and is shown in the second display area 232 in this example.

  In step S <b> 206, when the feature line included in the map information displayed in the first display area 231 and the feature line included in the map information displayed in the second display area 232 are common, the display control unit 22 uses these features. Each map information is displayed so that a line may be continued (S206). This display process will be described later.

  Until the scroll operation is finished, map information is displayed in the first display area 231 and the second display area 232, respectively (S207, S208).

  When it is determined in S208 that the scroll operation has been completed (Yes in S208) and a detailed map display command is input (S209), the display control unit 22 overlaps at least a part of the second display area 232 to display the third display area. 233 is formed (S210). FIG. 3D shows a display example of the third display area 233. The display control unit 22 displays the map information of the predetermined area displayed in the second display area 232 in the third display area 233 at a scale larger than that.

  The detailed map display command includes information indicating an arbitrary point in the map information displayed in the second display area, and the display control unit 22 displays a detailed map centered on the specified point in the third display area 233. To do. The arbitrary point indicated may be a point indicated by the cursor at the timing when the detailed map display command is input, but in this embodiment, the switch of the joystick 11 is pressed after scrolling (the detailed map display command is input). The map information centered on the point located at the center of the second display area 232 (point b in FIG. 3C) at the timing is displayed on the third display area 233. In this example, the designated point shown in the second display area 232 (point b in FIG. 3C) and the designated point shown in the third display area 233 (point b in FIG. 3D) The position on the screen 23 is set to the same position on the screen.

  In this example, the scale of the map information displayed in the third display area 233 is larger than the scale of the map information displayed in the second display area 232 and is the scale of the map information displayed in the first display area 232. And the same scale.

  If it is determined in step S211 that the scroll operation has been performed again within a predetermined time, that is, if the display means 20 has acquired a scroll command again (Yes in S211), the third display area 233 is erased. A display example at that time is shown in FIG. Thereafter, the process returns to step S207, and scroll operation processing is performed. If the scroll command is not input again (No in S211), the process ends.

  As described above, according to the map display device 100 of the present embodiment, the first display area 231 and the second display area 232 indicate the relative positional relationship between the current position and the area displayed in the scrolling map information. be able to. In addition, wide area map information is displayed in the second display area 232 during the scroll operation, and the user's operability is not impaired. Further, when the user wants to know a point after scrolling, detailed map information in a narrow area can be displayed in the third display area 233, and the user's request can be met. In addition, the user can perform these operations only with the pointing device 11 such as a joystick.

  Next, the screen dividing process in step S204 shown in FIG. 1 will be described in detail with reference to FIGS.

  FIG. 4 is a flowchart of the screen division process. If the display control unit 22 determines that the current position is out of the screen (Yes in Step 203), the display control unit 22 determines the scroll direction based on the scroll command (S401). Next, the display control unit 22 refers to the correspondence data in which the “scroll direction” is associated with the “formation positions of the first display area and the second display area” (S402). The display control unit 22 displays the second display area 232 in the area on the scroll direction side, and displays the first display area 231 in the area on the opposite side in the scroll direction (S403).

  Specifically, display examples of the divided screen 23 are shown in FIGS. In this embodiment, the scroll direction is defined based on the angle in the xy coordinate system with the screen center or the current position as the origin. Specifically, the operation direction of the joystick 11 corresponding to the scroll direction is divided into 8 clockwise with the y-axis as a reference, and 22.5 ° or more and less than 67.5 ° is “upward right”, and 67.6 ° or more 112.5 ° or less is “right”, 112.5 ° or more and less than 157 ° is “right downward”, 157 ° or more and less than 202.5 ° is “down”, and 202.5 ° or more 247. Less than 5 ° was defined as “left downward”, 247.5 ° or more and less than 292.5 ° was defined as “leftward”, and 292.5 ° or greater but less than 22.5 ° was defined as “upward”.

  5A, when the joystick 11 is operated upward and the scroll direction based on the scroll command is the upper direction of the screen 23, the first display area 231 is formed in the lower edge area of the rectangular screen 23. The second display area 232 shows an example formed in the upper edge area of the screen 23. FIG. 5B shows a display example when a scroll command in the direction opposite to that in FIG.

  In FIG. 5C, when the joystick 11 is operated to the right and the scroll direction based on the scroll command is the right direction of the screen 23, the first display area 231 is formed in the left edge area of the rectangular screen 23. The second display area 232 shows an example formed in the right edge area of the screen 23. FIG. 5D shows a display example when a scroll command in the direction opposite to that in FIG. 5C is input.

  In FIG. 5E, when the joystick 11 is operated to the lower right and the scroll direction based on the scroll command is the lower right direction of the screen 23, the first display area 231 is formed in the upper left vertex area of the rectangular screen 23. In this example, the second display area 232 is formed in the lower right vertex area of the screen 23. FIG. 5F shows a display example when a scroll command in the opposite direction to that in FIG. 5E is input.

  In FIG. 5G, when the joystick 11 is operated in the upper right direction and the scroll direction based on the scroll command is the upper right direction of the screen 23, the first display area 231 is formed in the lower left vertex area of the rectangular screen 23. The second display area 232 shows an example formed in the upper right vertex area of the screen 23. FIG. 5H illustrates a display example when a scroll command in the opposite direction to that in FIG. 5G is input.

  Thus, by displaying the second display area 232 on the scroll direction side and displaying the first display area 231 on the opposite side to the scroll direction, the current position included in the first display area 231 and the map information being scrolled are displayed. Can be displayed in an easy-to-understand manner. In particular, since the directions of the map information in the first display area 231 and the second display area 232 are unified, the positional relationship between the current position and the map information being scrolled can be displayed in an easily understandable manner.

  Next, the display processing for connecting the characteristic lines in step S206 shown in FIG. 1 will be described based on FIGS.

  When the feature line included in the map information displayed in the first display area 231 and the feature line included in the map information displayed in the second display area 232 are common, the display control unit 22 uses the first feature line as the first feature line. Map information is displayed so as to be continuous at the boundary between the display area 231 and the second display area 232.

  As illustrated in FIG. 6, the display control unit 22 displays a common trunk line for the first display area 231 and the second display area 232 following the process of step S <b> 205 that displays map information with different scales in two display areas. It is determined whether a road (characteristic line) is included (S601). As shown in FIG. 7A, when a common main road c (characteristic line) is included in the map information of each display area (Yes in S601), the main road c is at the boundary between the two display areas. The positions of the main road c are displayed so as to be continuous (S602). The display control unit 22 changes the display range of the map information displayed in the first display area 231 and / or the display range of the map information displayed in the second display area 232 (by moving the map information). Align the position of the main road c. A display example in which the position of the main road c is matched is shown in FIG. When the map information of each display area does not include a common main road (No in S601) and includes a common general road (Yes in S603), the general roads are connected at the boundary between the two display areas. In addition, the position of the map information is shifted and the position of the general road is displayed together (S602).

  On the other hand, as shown in FIG. 7C, when the map information of each display area does not include a common trunk road and a general road (No in S601 and S603), the scale line is reduced and the characteristic line d is displayed second. This is displayed in the area 232 and displayed so as to be continuous with the characteristic line d of the first display area 232 (S604). An example of this is shown in FIG. The scale of the second display area 232 shown in FIG. 7D is smaller than the scale of the second display area 232 shown in FIG. 7C where the feature lines are not connected.

  In addition, the display control unit 22 of the present embodiment displays the map information in the first display area 231 so that the common feature line is continuous at the boundary area between the first display area 231 and the second display area 232. Each map information is displayed by changing the enlargement ratio of the map information to be displayed and / or the enlargement ratio of the map information displayed in the second display area 232. An example of this display processing is shown in FIGS. FIG. 8A shows a state before the feature lines are joined. FIG. 8B shows an example in which the first display area 231 is reduced in size and displayed such that feature lines are continuous. The first display area 231 shown in FIG. 8A displays (1/100 m) of map information, and the first display area 231 shown in FIG. 8B shows (1/200 m) of map information. Is displayed.

  Further, the display control unit 22 of the present embodiment displays the map information in the first display area 231 so that the common feature line is continuous at the boundary area between the first display area 231 and the second display area 232. Each map information is displayed by changing the aspect ratio of the map information to be displayed and / or the aspect ratio of the map information displayed in the second display area 232.

  This display processing example is shown in FIGS. FIG. 8C shows a state before the feature lines are joined. FIG. 8D shows an example in which the aspect ratio of the first display area 231 is changed to display the feature lines in a continuous manner.

  As a result, the user can accurately grasp the relative positional relationship between the current position indicated in the first display area 231 and the area being scrolled in the second display area, with the feature line as a mark.

Second Embodiment
FIG. 9 shows a block configuration of a map display device 100 ′ according to the second embodiment.
The map display device 100 ′ of the second embodiment is different from the map display device 100 of the first embodiment in that the input unit 10 includes the voice input unit 12. Here, different points will be mainly described, and description of overlapping parts will be avoided.

  The voice input unit 12 recognizes voice information spoken by the user toward the microphone 50 and receives control information to the display unit 20 by voice.

  The speech input unit 12 includes a speech language dictionary 121, a dictionary management unit 122, and a speech recognition unit 123. Each configuration will be described below.

  The speech language dictionary 121 is a network grammar language dictionary having a hierarchical structure. The hierarchical structure is constructed based on the possibility of the next utterance. FIG. 10 shows an example of the hierarchical structure of the speech language dictionary 121. The spoken language dictionary 121 stores words indicating “prefecture name” as the first layer, “city” as the second layer, and “town” as the third layer. For example, the first level stores names of prefectures such as “Kanagawa Prefecture”, the second level stores municipalities such as “Konan-ku, Yokohama-shi”, and the third level stores words such as “Konandai”. Has been. The hierarchical structure is determined in consideration of the order of words spoken. For example, when recognizing an utterance that identifies a region, the region is predicted to be uttered in the order of “prefecture name”, “city / town / village”, and “town”, so the utterance is first uttered in the first hierarchy. “Prefecture name” predicted is stored, “city” is stored in the second hierarchy, and “town area” is stored in the third hierarchy. Similarly, each hierarchy is sorted in descending order of appearance probability based on the possibility of the next utterance. That is, words having a high appearance probability are stored at the upper level of each hierarchy.

  The dictionary management unit 122 predicts the next spoken voice information and updates the spoken language dictionary 121 according to the prediction result. The dictionary management unit 122 moves the storage location of the word for recognizing the speech information that will be spoken next to the higher rank of the reference order of the speech language dictionary 121. The words stored in the uppermost layer (reference order is highest) of the speech language dictionary 121 are referred to earlier in the speech recognition process.

  The dictionary management unit 122 according to the present embodiment displays a language indicating a point included in the map information displayed in the first display area 231 and / or the second display area 232 in a higher reference order by the voice recognition unit 123 described later. Attach to hierarchy.

  Specifically, based on the example shown in FIGS. 11 and 12, the map information shown in the first display area 231 and / or the second display area 232 includes “YY station”, “XX station”, “YY town”. "XX town" is included. The dictionary management unit 122 extracts these place names from the displayed map information.

  The first display area 231 displays the current position of the user, and the second display area 232 displays map information scrolled by the user. Therefore, there is a high possibility that these areas include a place name designated by the user as a display target (around the destination or around the current place) or a place name designated as the destination of the guidance route. The dictionary management unit 122 according to the present embodiment predicts that there is a high possibility that it will be included in the speech information to be spoken next, and sets the language that expresses the place name included in the map information displayed in the second display area as the speech language The reference order of the dictionary 121 is moved to a higher hierarchy. FIG. 12A shows a speech language dictionary 121 in which the extracted languages “YY station”, “XX station”, “YY town”, and “XX town” are moved to a higher hierarchy. As a result, when a voice is input for “YY station”, “XX station”, “YY town”, and “XX town” that are currently displayed, the speech recognition unit 123 stores those stored in the first level of the speech language dictionary 121. Since the word can be referred to early, the accuracy and speed of the speech recognition process can be improved.

  FIG. 12B shows the spoken language dictionary 121 in which the reference order is advanced while keeping the hierarchy to which the extracted languages “YY station”, “XX station”, “YY town”, and “XX town” belong. As a result, when a voice is input for “YY station”, “XX station”, “YY town”, and “XX town” that are currently displayed, the speech recognition unit 123 displays those with a fast reference order in each hierarchy of the speech language dictionary 121. Since the word can be referred to early, the accuracy and speed of the speech recognition process can be improved.

  The speech recognition unit 123 recognizes control information based on speech information input with reference to the speech language dictionary 121 and sends the recognized control information to the display unit 20.

The control procedure of the voice input unit 12 will be described based on the flowchart of FIG.
The dictionary management unit 122 sets a language indicating a point included in the map information displayed in the second display area 232 after step S208 shown in FIG. The reference order by 123 is attributed to the upper hierarchy. The update timing of the spoken language dictionary 121 is not limited to after the step S208, and the update of the spoken language dictionary 121 is performed at a predetermined timing (every t seconds) during the scroll operation after the step S206 in order to correspond to the utterance input during the scroll. May be performed. According to the present embodiment, the accuracy of voice recognition can be improved and the speed of voice recognition processing can be increased.

  In the present embodiment, the map display device 100 has been described. However, the same operation and effect can be achieved even if the program of the present invention is executed by a computer.

  The embodiment described above is described for facilitating the understanding of the present invention, and is not described for limiting the present invention. Therefore, each element disclosed in the above embodiment is intended to include all design changes and equivalents belonging to the technical scope of the present invention.

It is a block block diagram of the map display apparatus which concerns on 1st Embodiment. It is a flowchart figure which shows the process sequence of the map display apparatus which concerns on 1st Embodiment. 3A to 3E are display examples for explaining the processing hand shown in FIG. It is a flowchart figure which shows the control procedure of the formation process of a 1st display area and a 2nd display area. FIGS. 5A to 5H are display examples for explaining the display area forming process shown in FIG. It is a flowchart figure which shows the process sequence which joins a feature line. 7A to 7D are diagrams for explaining the process of joining the characteristic lines. 7A to 7D are diagrams for explaining another process for joining feature lines. It is a block block diagram of the map display apparatus which concerns on 2nd Embodiment. It is a figure for demonstrating a speech language dictionary. It is a figure for demonstrating the process which extracts a language from the displayed map information. 12A and 12B are diagrams for explaining the update processing of the spoken language dictionary. It is a flowchart figure which shows the process sequence of update of a speech language dictionary.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Navigation apparatus 100,100 '... Map display apparatus 10 ... Input means 11 ... Pointing device 12 ... Voice input part 121 ... Spoken language dictionary 122 ... Dictionary management part 123 ... Voice recognition part 20 ... Display means 21 ... Control information Acquisition unit 22 ... display control unit 23 ... screen 30 ... current position detection means 40 ... map information

Claims (12)

A map display device that displays map information based on acquired control information,
Display means having a screen for displaying map information; and an input means for receiving an input of control information including at least a scroll command of the map information and a detected current position;
When the display means acquires a predetermined scroll command via the input means, the display means divides the screen and displays a map information around the current position including the current position; A map display device that forms a second display area for displaying the map information and displays map information on a scale smaller than the first display area in the second display area.   The map display device according to claim 1, wherein map information of a scale determined according to an input amount to the input means operated by a user is displayed in the second display area. The display means acquires a scroll direction from a scroll command acquired via the input means,
Forming the second display area in an area on the scroll direction side of the screen;
The map display device according to claim 1, wherein the first display area is formed in at least a part of an area excluding the second display area of the screen. The screen is rectangular;
The display means includes a first edge region, a lower edge region, a right edge region, a left edge region, an upper right vertex region, a lower right vertex region, an upper left vertex region, or a lower left vertex region. The map display device according to claim 3, which forms a display area.   When the feature line included in the map information displayed in the first display area and the feature line included in the map information displayed in the second display area are common, the display means displays each feature line in the first display area. The map display apparatus in any one of Claims 1-4 which display each map information so that it may continue in a boundary part of a display area and a 2nd display area.   The map display device according to claim 5, wherein the feature line is any one of an expressway, a main road, a railway, and a river.   When the display means obtains a detailed map reference command after the scroll command, the display means forms a third display region overlapping at least a part of the second display region, and the second display region is formed on the third display region. The map display apparatus in any one of Claims 1-6 which displays the map information of the displayed predetermined area | region on a larger scale than the said 2nd display area. The input unit has a voice input unit that recognizes spoken voice information and receives control information input to the display unit by voice;
The voice input unit
A spoken language dictionary having a hierarchical structure;
A dictionary management unit that predicts next spoken speech information and updates the spoken language dictionary according to the prediction;
A speech recognition unit that recognizes control information based on speech information input with reference to the speech language dictionary and sends the control information to the display means;
8. The dictionary management unit according to claim 1, wherein a language indicating a point included in the map information displayed on the screen is attributed to a higher rank in a rank referred to by the voice recognition unit. 9. Map display device. A display method for displaying map information based on control information on a screen of a display device,
Control information including at least a scroll command and the detected current position;
When the acquired control information includes a predetermined scroll command, the screen is divided to display a first display area for displaying map information around the current position including the current position, and the map information being scrolled. Forming a second display area;
A display method for displaying map information having a scale smaller than that of the first display area in the second display area.   When a detailed map reference command is acquired after acquiring the scroll command, a third display area is formed to overlap at least a part of the second display area, and is displayed in the second display area in the third display area. The display method according to claim 9, wherein the map information of the predetermined area is displayed at a scale larger than the second display area. On the computer that displays the map information based on the control information on the display screen,
A step of acquiring control information including at least a scroll command and a current position;
Detecting whether or not a predetermined scroll command is included in the acquired control information;
A first display area for dividing the display screen to display map information around the current position including the current position when the step detects that a predetermined scroll command is included; and the map being scrolled Forming a second display area for displaying information, and displaying map information on a scale smaller than the first display area in the second display area;
A program for displaying a map. Detecting whether the detailed map reference command is acquired after acquiring the scroll command;
When it is detected in the step that a detailed map reference command has been acquired, a third display area is formed so as to overlap at least a part of the second display area, and displayed in the second display area in the third display area Displaying the map information of the predetermined area on a scale larger than the second display area;
The program for map display according to claim 11, comprising:

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