JP2008046237A - Map display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a map display device capable of easily comprehending the correspondence relation of the map between the display before change and the display after change when map display is changed. <P>SOLUTION: When the user performs an operation to switch, by using an input device, into north-up mode display wherein the map 20 is displayed with the upper direction of the displayed screen as north, the displayed image changes as follows. When the north-up mode display is selected, the display color of the map 20 in the area being displayed on the display screen is changed. The upper direction of the map 20 gradually changes from the vehicle traveling direction to north. Then, the map 20 wherein the upper direction of the screen is north is displayed. The map 20 on the screen is drawn as the area where the background display color is changed and its outside area where the display color is not changed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a map display device that displays a map.

A vehicle navigation device that can switch the display of a road map between a north-up mode and a heading-up mode is known as a prior art (for example, Patent Document 1).
JP 2002-296048 A

  In the conventional vehicle navigation apparatus as described in Patent Document 1, when the map display is switched between the north up mode and the heading up mode, the correspondence between the map before and after the switching is known. There is a problem of disappearing. If the correspondence between maps before and after switching is lost, the driver may misunderstand the direction of the map.

(1) The map display device of the invention of claim 1 comprises a display monitor, a map display control means for displaying a map on the display monitor, and an operation means for changing the map display on the display monitor, and the map display control means. In the display screen when the map display is changed by the operating means, the range of the display screen before the display change and the range newly displayed on the display monitor by the display change are displayed in different modes. To do.
(2) The invention of claim 2 is the map display device according to claim 1, wherein the map display control means changes the display between the north up and heading up display monitor before the display is changed. The map screen is gradually changed while displaying the range of the map displayed on the screen.
(3) The invention of claim 3 is the map display device according to claim 1, wherein when the map display control means changes the map display by the map scroll, the map range displayed on the display monitor before the map scrolls. Alternatively, after scrolling the map, the map is scrolled while displaying the range of the map to be displayed on the display monitor.
(4) The invention of claim 4 is the map display device according to claim 1, wherein the map display control means changes the map displayed on the display monitor before the display change when changing the map display to the wide area map. While displaying the range, the scale ratio is gradually reduced to display a wide area map.
(5) In the map display device according to claim 1, when the map display control means changes the map display to the detailed map, the map display control means displays the range of the map to be displayed on the display monitor after the display is changed. However, the detailed map is displayed by gradually increasing the scale ratio.
(6) The invention according to claim 6 is the map display device according to any one of claims 1 to 5, wherein the map display control means includes a background display color of the range of the display screen before the display change, and a display change. Thus, the background display color of the range newly displayed on the display monitor is made different.

  According to the present invention, the range of the display screen before the map display is changed and the range newly displayed on the display monitor by the display change are displayed in different modes. Therefore, the correspondence of the map between before and after the change can be easily grasped.

  FIG. 1 shows a navigation device 1 according to an embodiment of the present invention. In the navigation device 1, the map displayed on the display monitor 16 can be switched between the north up mode and the heading up mode, the map can be scrolled, and the scale of the map can be changed. The navigation device 1 includes a control circuit 11, ROM 12, RAM 13, current location detection device 14, image memory 15, display monitor 16, speaker 17, input device 18, touch panel 19, and disk drive 111. The disk drive 111 is loaded with a DVD-ROM 112 in which map data is stored.

  The control circuit 11 includes a microprocessor and its peripheral circuits, and performs various controls by executing a control program stored in the ROM 12 using the RAM 13 as a work area. For example, based on the map data stored in the DVD-ROM 112, the control circuit 11 reads the map data for the north up and heading up maps, the image data for the map whose display range has been moved, and the map image data for which the scale ratio has been changed. Etc. are generated appropriately. Thereby, the map displayed on the display monitor 16 can be switched between the north up mode and the heading up mode, the map can be scrolled, and the scale of the map can be changed.

  The control circuit 11 also performs a predetermined route search process based on the map data stored in the DVD-ROM 112. Then, the processing result is displayed on the display monitor 16 as a recommended route.

  The current location detection device 14 is a device that detects the current location of the vehicle. The current location detection device 14 includes a vibration gyro 14a, a vehicle speed sensor 14b, a GPS (Global Positioning System) sensor 14c, and the like. The vibration gyro 14a detects the traveling direction of the vehicle, the vehicle speed sensor 14b detects the vehicle speed, and the GPS sensor 14c detects a GPS signal from a GPS satellite. The navigation device 1 determines a map display range, a route search start point, and the like based on the current location of the vehicle detected by the current location detection device 14, and displays the current location on the map.

  The image memory 15 stores image data to be displayed on the display monitor 16. The image data includes road map drawing data and various graphic data, which are appropriately generated in the control circuit 11 as described above based on the map data stored in the DVD-ROM 112.

  The disk drive 111 reads map data from the DVD-ROM 112. The map data includes map display data, route search data, and the like. The map display data and the route search data include road link information and node information stored in the map data. The map display data has map data of a plurality of scales from wide areas to details, and the scale of the display map can be changed according to a user request. The map data may be read from a recording medium other than the DVD-ROM 112, such as a CD-ROM or a hard disk.

  The display monitor 16 provides the user with various information such as a map near the vehicle position as a screen display based on various information such as map data. The speaker 17 outputs sound for instructing the user to perform various input operations and for guiding the route. The input device 18 has an input switch for a user to set various commands, and is realized by an operation panel, a remote controller, or the like. The user can switch the map display between the north up mode and the heading up mode or change the scale of the map by operating the input device 18. The destination is set by operating the input device 18 in accordance with an instruction on the display screen of the display monitor 16 or a voice instruction from the speaker 17.

  The touch panel 19 is a transparent touch switch laminated on the surface of the display monitor 16, and an image displayed on the display monitor 16 is displayed through the touch panel 19. The touch panel 19 sends a signal corresponding to the operation position on the touch panel 19 to the touch panel control unit 110. The touch panel control unit 110 calculates the pressed position of the touch panel 19.

  When the display screen of the display monitor 16 is pressed, the touch panel 19 is pressed. Then, the processes defined in the pressed various buttons and the display menu are executed. When the map screen is pressed, the map is scrolled so that the pressed position is displayed at the center of the display screen.

  When the destination is set by the user, the navigation apparatus 1 performs a route calculation from the current location detected by the GPS sensor 14c to the destination based on a predetermined algorithm. The route thus obtained (hereinafter referred to as a recommended route) is displayed on the screen in a manner different from other roads by changing the display form, for example, the display color. Thereby, the user can recognize the recommended route on the map on the screen. In addition, the navigation device 1 instructs the user in the direction of travel using a screen or voice so that the vehicle can travel according to the recommended route, thereby guiding the route of the vehicle.

  Next, display processing when the map display is switched between the north up mode and the heading up mode will be described. As an example, a case where the map display is switched from the heading-up mode to the north-up mode will be described.

  FIG. 2 is a diagram for explaining 16 display screens of the display monitor. On the display screen, the map 20 is displayed with the traveling direction of the vehicle up, that is, in the heading-up mode, and the vehicle position mark 21 and the direction mark 22 are displayed over the map 20. The orientation mark 22 is a mark indicating the north direction on the map. In FIG. 2, the map 20 is displayed with the northwest facing upward.

  When the input device 18 is used to perform an operation for switching to the display in the north-up mode in which the map 20 is displayed with the upper direction of the display screen being north, the display screen changes as follows. When the north-up mode display is selected, the background display color of the map 20 in the range displayed on the display screen is changed as shown in FIG. Next, as shown in FIG. 3B, the upward direction of the map 20 gradually changes from the vehicle traveling direction to the north. Then, as shown in FIG. 3C, a map 20 with the upper direction of the screen in the north is displayed.

  As can be seen from FIGS. 3B and 3C, the map 20 on the screen is drawn in a range in which the background display color is changed and a range in which the outer display color is not changed. When the upper direction of the display screen coincides with the north, the range in which the background display color is changed returns to the original display color.

  Similarly, when the map display is switched from the north-up mode to the heading-up mode, the display screen is changed while the range in which the background display color is changed is displayed.

  Next, the map display switching process according to the embodiment of the present invention will be described with reference to the flowchart of FIG. The process of FIG. 4 is executed in the control circuit 11 by a program that starts when a switch (not shown) for switching the map display between the north up mode and the heading up mode is operated.

  In step S <b> 401, the range displayed on the display screen of the map 20 is calculated based on the coordinates of the center of the map 20 displayed on the display monitor 16 and the scale ratio of the map 20. In step 402, the background display color of the range displayed on the display screen of the map 20 is changed. In step S403, it is determined whether the map 20 is a heading-up display. In the case of heading-up display, an affirmative determination is made in step S403, and the process proceeds to step S404. In the case of north-up display, a negative determination is made in step S403, and the process proceeds to step S407.

  In step S404, the map 20 is gradually changed from a heading-up display in which the upper direction of the display screen is the vehicle traveling direction to a north-up display in which the upper direction of the display screen is north. In step S405, it is determined whether the map 20 has been switched to the north-up display. If it is determined that the display has been switched to the north-up display, an affirmative determination is made in step S405 and the process proceeds to step S406. If it is determined that the display has not been switched to the north-up display, a negative determination is made in step S405, and the process returns to step S404. In step S406, the range in which the background display color of the map 20 is changed is returned to the original display color. Then, the process ends.

  In step S407, the map 20 is gradually changed from the north up display to the heading up display. In step S408, it is determined whether the map 20 has been switched to the heading-up display. If it is determined that the heading-up display has been switched, an affirmative determination is made in step S408, and the process proceeds to step S406. If it is determined that the heading-up display has not been switched, a negative determination is made in step S408, and the process returns to step S407.

The navigation device 1 according to the above embodiment has the following operational effects.
(1) When the map display is changed between the north-up display and the heading-up display, the display screen range before the map display change and the range newly displayed on the display monitor due to the display change are different. It was made to display with. Therefore, when the map display is changed, the user does not always have such intention, but even in such a case, the user can easily understand how the map has changed. In addition, all users can easily grasp the degree of change in the direction of the map, and the map display is gradually changed so that the user does not feel uncomfortable even if the map display is changed. .
(2) By changing the background display color of the map display range, the mode of the display range before the map display change and the mode of the display range after the map display change are made different. Therefore, the display range before the transition can be easily grasped during the transition of the map screen or after the transition of the map screen.

The navigation device 1 of the above embodiment can be modified as follows (1) to (12).
(1) Map scroll 1
In the embodiment of the present invention, the case where the map display is switched between the north-up mode and the heading-up mode has been described, but the present invention can also be applied to the case where the map 20 is scrolled. Hereinafter, transition of the display screen when the map 20 is scrolled will be described with reference to FIG.

  When the map 20 is scrolled, the map screen is pressed as shown in FIG. Then, the pressed position 23 is displayed, and the background display color of the map 20 in the range displayed on the display screen is changed. Next, as shown in FIG. 5B, the map 20 is scrolled so that the pressed position 23 is displayed in the center of the display screen in the changed display mode for the range in which the background display color is changed. Is done. Then, as shown in FIG. 5C, the range in which the background display color is changed is displayed, and the map 20 is displayed so that the pressed position 23 becomes the center of the display screen. Finally, the display of the pressed position 23 is erased, and the background display color change range is returned to the original background display color.

  Next, map scroll processing according to a modification of the embodiment will be described with reference to the flowchart of FIG. 6 is executed in the control circuit 11 by a program that starts when the map screen is pressed.

  In step S601, the coordinates on the map of the pressed position (hereinafter referred to as pressed coordinates) are calculated from the pressed position on the map screen. In step S602, the pressed position is displayed in a color or pattern different from the background display color. In step S <b> 603, the range displayed on the display screen of the map 20 is calculated from the coordinates of the center of the map 20 displayed on the display monitor 16 and the scale ratio of the map 20.

  In step 604, the background display color of the range displayed on the display screen of the map 20 is changed. In step S605, the map 20 is scrolled so that the center coordinate of the map 20 displayed on the display screen becomes the pressed coordinate in the state where the background display color is changed in the range where the background display color is changed. In step S606, it is determined whether or not the center coordinates of the map 20 displayed on the display screen are the pressed coordinates. If it is determined that the pressed coordinate is reached, an affirmative determination is made in step S606, and the process proceeds to step S607. If it is determined that the pressed coordinate is not reached, a negative determination is made in step S606, and the process returns to step S605.

  In step S607, the pressed position is deleted, and the range in which the background display color of the map 20 is changed is returned to the original background display color. Then, the process ends.

The map scroll according to the above modification (1) has the following operational effects.
When scrolling the map 20, the map 20 was scrolled while displaying the display range of the map 20 before scrolling. Therefore, the moving distance and moving direction when the map 20 is scrolled can be easily grasped. In addition, since the map screen gradually changes, the user does not feel uncomfortable even when the map screen is switched. For this reason, the conventional problem that the user cannot easily understand that the pressed position is displayed in the center of the display screen is solved.

(2) Map scroll 2
Further, when the map 20 is scrolled, the map screen may be changed as follows. Another modification in the case of scrolling the map 20 will be described with reference to FIG.

  When the map 20 is scrolled, the map screen is pressed as shown in FIG. Then, the pressed position 23 is displayed, and the background display color of the map 20 in the range displayed on the display screen after the map 20 is scrolled is changed. Next, as shown in FIG. 7B, the map 20 is scrolled so that the pressed position is displayed in the center of the display screen in the changed display mode for the range in which the background display color is changed. The Then, as shown in FIG. 7C, the range in which the background display color is changed is displayed, and the map 20 is displayed so that the pressed position becomes the center of the display screen. Finally, the display of the pressed position 23 is deleted, and the range in which the background display color is changed returns to the original background display color.

  Next, another map scrolling process in the modification of the embodiment will be described with reference to the flowchart of FIG. The processing of FIG. 8 is executed in the control circuit 11 by a program that starts when the map screen is pressed. Steps common to the map scrolling process of FIG. 6 are denoted by common reference numerals, and differences from the map scrolling process of FIG. 6 are mainly described.

  After displaying the pressed coordinates in step S602, in step S801, the range that the map 20 displays on the display screen after scrolling is calculated from the pressed coordinates and the scale ratio of the map 20. In step 802, the background display color of the range displayed on the display screen by the map 20 after scrolling is changed. Then, the process proceeds to step S605.

The map scroll according to the above modification (2) has the following operational effects.
When scrolling the map 20, the map 20 was scrolled while displaying the display range of the map 20 after scrolling. Therefore, before scrolling the map 20, it is possible to easily grasp the moving distance and moving direction of the map when scrolled. In addition, since the map screen gradually changes, the user does not feel uncomfortable even when the map screen is switched. For this reason, the conventional problem that the user cannot easily understand that the pressed position is displayed in the center of the display screen is solved.

(3) Wide area map display In the embodiment of the present invention, the case where the map display is switched between the north-up mode and the heading-up mode has been described. Can be applied. Hereinafter, the transition of the display screen when displaying a wide area map will be described with reference to FIG.

  When an operation for displaying a wide area map is performed using the input device 18, the display screen changes as follows. As shown in FIG. 9A, the background display color of the map 20 in the range displayed on the display screen is changed. Next, as shown in FIG. 9B, the scale of the map 20a is gradually reduced with the changed background display color for the range in which the background display color is changed. Then, as shown in FIG. 9C, the range in which the background display color is changed is displayed and the wide area map 20b is displayed. Finally, the background display color change range returns to the original background display color.

  Next, map display switching processing according to the embodiment of the present invention will be described with reference to the flowchart of FIG. The process of FIG. 10 is executed in the control circuit 11 by a program that starts when a switch (not shown) that displays the wide area map 20b is operated.

  In step S <b> 1001, the range displayed on the display screen of the map 20 is calculated from the coordinates of the center of the map 20 displayed on the display monitor 16 and the scale ratio of the map 20. In step S1002, the background display color of the range displayed on the display screen of the map 20 is changed. In step S1003, the map 20a is displayed with the scale ratio gradually reduced in the changed display mode for the range in which the background display color is changed. In step S1004, it is determined whether the scale of the map 20a has reached a predetermined scale. If it is determined that the predetermined scale ratio has been reached, an affirmative determination is made in step S1004, and the process proceeds to step S1005. If it is determined that the predetermined scale has not been reached, a negative determination is made in step S1004, and the process returns to step S1003. In step S1005, the range in which the background display color of the wide area map 20b is changed is returned to the original display color. Then, the process ends.

The wide area map display of the above modification (3) has the following operational effects.
When the map display was changed to the wide area map 20b, the map scale was reduced while displaying the display range of the map 20 before the change. Therefore, when the wide area map 20b is displayed, it is possible to easily grasp how much the display range has expanded compared to the map 20. In addition, since the map screen gradually changes, the user does not feel uncomfortable even when the map screen is switched.

(4) Detailed Map Display In the embodiment of the present invention, the case where the map display is switched between the north up mode and the heading up mode has been described. Can be applied. Hereinafter, the transition of the display screen when displaying the detailed map will be described with reference to FIG.

  When an operation for displaying a detailed map is performed using the input device 18, the display screen changes as follows. As shown in FIG. 11A, in the map 20, the background display color of the range displayed on the display screen when the detailed map is displayed changes. Next, as shown in FIG. 11B, the range in which the background display color is changed is displayed, and the scale ratio of the map 20c gradually increases. Then, as shown in FIG. 11C, a detailed map 20d whose background display color is changed is displayed. Finally, the background display color returns to the original background display color.

  Next, the map display switching process according to the embodiment of the present invention will be described with reference to the flowchart of FIG. The process of FIG. 12 is executed in the control circuit 11 by a program that starts when a switch that displays a detailed map 20d (not shown) is operated.

  In step S1201, the range for displaying the detailed map 20d on the display screen is calculated from the coordinates of the center of the map 20 displayed on the display monitor 16 and the scale ratio of the detailed map 20d to be displayed. In step S1202, in the map 20, the background display color of the display range of the detailed map 20d is changed. In step S1203, the map 20c is displayed by gradually increasing the scale ratio in the changed display mode for the range in which the background display color is changed. In step S1204, it is determined whether the scale of the map 20c has reached a predetermined scale. If it is determined that the predetermined scale has been reached, an affirmative determination is made in step S1204 and the process proceeds to step S1205. If it is determined that the predetermined scale has not been reached, a negative determination is made in step S1204, and the process returns to step S1203. In step S1205, the background display color of the detailed map 20d is returned to the original background display color. Then, the process ends.

The detailed map display according to the modified example (4) has the following operational effects.
When changing the map screen to a detailed map, the map screen was gradually changed while displaying the display range of the map after the change. Therefore, before displaying the detailed map 20d, the range displayed on the detailed map 20d of the map 20 can be easily grasped. In addition, since the map screen gradually changes, the user does not feel uncomfortable even when the map screen is switched.

(5) When the recommended route 24 is erased from the map 20, as shown in FIGS. 13A to 13C, the recommended route 24 may gradually become thinner and disappear. It can be clearly shown to the user that the recommended route 24 has disappeared.

(6) When the display is changed from the planar map to the bird's eye view display map, the map display may be gradually changed from the planar map to the bird's eye view display map. It can be clearly shown to the user that the map display has been changed from the planar map to the bird's eye view map. In addition, since the map screen is gradually changed, the user does not feel discomfort even if the map screen is changed compared to the case where the map screen is suddenly changed.

(7) When changing the background display color of the map, it may be changed gradually. It is possible to clearly indicate to the user that the map background display color has been changed.

(8) When the sunset is displayed on the bird's eye view display map, the sky may be gradually changed from the daytime sky to the sunset sky. It is possible to clearly indicate to the user that the setting has been changed to the sunset display.

(9) When changing the character size of characters displayed on the map, the character size may be gradually changed. It can be clearly indicated to the user that the character size has been changed.

(10) When the facility mark is displayed on the map, the facility mark may be gradually displayed. It is possible to clearly indicate to the user that the facility mark has been displayed.

(11) When the traffic jam information is displayed on the map, the traffic jam information may be gradually displayed. It is possible to clearly indicate that the traffic information is displayed to the user.

(12) If it is a map display device, it is not limited to the navigation device 1.

  The above description is merely an example, and the present invention is not limited to the above embodiment.

The correspondence between the elements of the claims and the embodiments will be described.
The map display control means of the present invention corresponds to the control circuit 11, and the operation means corresponds to the input device 18 or the touch panel 19. In addition, the above description is an example to the last, and when interpreting invention, it is not limited to the correspondence of the component of said embodiment and the component of this invention at all.

It is a block diagram which shows the structure of the navigation apparatus of embodiment of this invention. It is a figure for demonstrating the display screen displayed on the display monitor. It is a figure for demonstrating the transition of a screen when changing a map display from heading up mode to north up mode. It is a flowchart for demonstrating the display process when changing a map display between north up mode and heading up mode. It is a figure for demonstrating the transition of a screen when scrolling a map. It is a flowchart for demonstrating the display process when scrolling a map. It is a figure for demonstrating the transition of the other screen when scrolling a map. It is a flowchart for demonstrating the other display process when scrolling a map. It is a figure for demonstrating the transition of a screen when displaying a wide area map. It is a flowchart for demonstrating the display process when displaying a wide area map. It is a figure for demonstrating the transition of a screen when displaying a detailed map. It is a flowchart for demonstrating the display process when displaying a detailed map. It is a figure for demonstrating the transition of a screen when deleting a recommendation path | route.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Navigation apparatus 11 Control circuit 16 Display monitor 18 Input apparatus 19 Touch panel 20, 20a-20d Map 21 Own vehicle position mark 22 Direction mark 23 Pressed position 24 Recommended route

Claims (6)

A display monitor;
Map display control means for displaying a map on the display monitor;
Operating means for changing the map display on the display monitor,
In the display screen when the map display is changed by the operation means, the map display control means has a mode in which a range of the display screen before the display change and a range newly displayed on the display monitor by the display change are different. A map display device characterized by being displayed on the screen. The map display device according to claim 1,
The map display control means gradually displays the map screen while displaying the range of the map displayed on the display monitor before the display change when the display of the map is changed between north up and heading up. A map display device characterized by being changed to The map display device according to claim 1,
The map display control means displays a map range displayed on the display monitor before scrolling the map or a map range displayed on the display monitor after scrolling the map when the map display is changed by scrolling the map. A map display device characterized in that the map is scrolled. The map display device according to claim 1,
When changing the map display to a wide area map, the map display control means displays the wide area map while gradually reducing the scale ratio while displaying the range of the map displayed on the display monitor before the display change. A map display device characterized by: The map display device according to claim 1,
When the map display control means changes the map display to a detailed map, the map display control means displays the detailed map by gradually increasing the scale ratio while displaying the range of the map to be displayed on the display monitor after the display change. A featured map display device. The map display device according to any one of claims 1 to 5,
The map display control means makes the background display color of the range of the display screen before the display change different from the background display color of the range newly displayed on the display monitor by the display change. .

Images