JP2008267844A - Navigation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a "navigation device" for automatically adjusting the scale of two-screen display while reflecting the intention of a user. <P>SOLUTION: This navigation device includes a first scale holding section 120 for holding the scale of a main screen 52a, a second scale holding section 130 for holding the scale of a sub screen 52b, a scale match determination section 140 for determining, when the scale of the main screen is altered, whether the altered scale matches with the scale of the sub screen, and a scale altering section 150 for altering the scale of the sub screen based on the scale set by an initializing section 100 when the matching is determined. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a navigation device, and more particularly to automatic adjustment of a scale when a map is simultaneously displayed on two screens.

  The navigation device is used as an electronic device that displays a road map around the vehicle position on a display and guides a route to a destination. With the widening of the display of such a navigation device, it is possible to divide the display screen into two and display different information on each screen. For example, a wide-scale road map is displayed on one screen and a detailed-scale road map is displayed on the other screen, or a road map is displayed on one screen with a heading up, and a north-up is displayed on the other screen. A road map can be displayed.

  Patent Document 1 switches a two-screen display to a one-screen display when it is detected that a map having the same scale and the same content is displayed on two screens by a user's scale instruction in a navigation device that displays maps on two screens. Or switching to the next scale map display, or switching to a different map display. This eliminates the waste of displaying maps of the same content at the same scale on two screens simultaneously.

JP 2005-308661 A

  When performing two-screen display, the scale (scale) of the map displayed on each screen can be appropriately changed by a user operation. In some cases, the scales of the maps on both screens may be the same. In such a case, the scale of one of the screens can be automatically changed according to Patent Document 1 described above. However, since the method shown in Patent Document 1 changes the scale of the screen on which the user has performed the operation, the scale is arbitrarily changed against the user's will, and the user misunderstands the malfunction of the navigation device. Will do.

  An object of the present invention is to solve the above-described conventional problems and to provide a navigation device capable of automatically adjusting a scale reflecting a user's intention.

  The navigation device according to the present invention has a function of displaying maps on two screens on a display, and displays the first scale information of the map displayed on the first screen and the second screen. Setting means for setting the second scale information of the map to be displayed, and when the scale of the first screen is changed, it is determined whether or not the scale of the first screen matches the scale of the second screen A determination unit; and a scale changing unit that changes the scale of the second screen based on the magnitude relationship between the first and second scale information set in the setting unit when the determination unit determines that they match. .

  Preferably, the navigation device further includes user input means for changing a scale of the first screen by a remote controller or a touch panel. Preferably, the scale changing unit selects one scale from a plurality of predetermined scales, and changes the scale of the second screen.

  Preferably, the navigation device further includes first holding means for holding a scale of a map displayed on the first screen, second holding means for holding a scale of the map displayed on the second screen, Map display means for displaying a map on the first screen according to the scale held by the first holding means and displaying the map on the second screen according to the scale information held by the second holding means. The scale of the holding means is changed by the user input means, and the determination means compares the scale held by the first holding means and the second holding means.

  A map display method or a map display program according to the present invention displays a map on two screens on a display, respectively, and the first scale information and the second screen of the map displayed on the first screen are displayed. The step of setting the second scale information of the map displayed on the map, and whether the scale of the first screen matches the scale of the second screen when the scale of the first screen is changed And when the two scales are determined to coincide with each other, the step of changing the scale of the second screen based on the magnitude relationship between the set first and second scale information, and the changed scale Displaying a map on the second screen.

  According to the present invention, when the scale of the changed first screen matches the scale of the second screen, the second screen is based on the magnitude relationship between the first and second scale information set in advance. Since the scale of the is changed, the scale can be automatically adjusted to reflect the user's intention. Furthermore, the scale of the second screen can be adjusted to the user's preference by using the setting information.

  The best mode for carrying out the present invention will be described in detail with reference to the drawings. Here, an in-vehicle navigation device is illustrated.

  FIG. 1 is a block diagram illustrating a configuration of the navigation device according to the present embodiment. The navigation device 1 receives road traffic information outside the vehicle via a GPS receiver 10 that measures the position of the vehicle using GPS satellites, a self-contained navigation sensor 12 including a vehicle speed sensor and a gyro sensor, and an antenna 14. A VICS / FM multiplex receiver 16, a touch panel 22, a user input interface 20 including a voice input unit 24 and a remote control operation unit 26, a storage device 30 such as a hard disk, and a data communication control unit 32 that enables data communication with the outside wirelessly or by wire. A sound output unit 40 for outputting sound from the speaker 42; a display control unit 50 for displaying an image on the display 52; a program memory 60 for storing a program; a data memory 70 for temporarily storing data; A state detector 80 for detecting the traveling state of the vehicle, It contains fine control unit 90.

  The storage device 30 stores a program and a database for executing various navigation functions. The database includes road map data, area names, facility data, and the like necessary for road guidance. The road map data includes link (road) data and intersection data.

  The program memory 60 loads a program stored in the storage device 30 and stores, for example, a program 62 for searching for a route to the destination, a program 64 for guiding the route to the destination, and the like. Further, a two-screen display program 66 for automatically adjusting the scale when the screen of the display 52 is switched from one screen to two screens or from two screens to one screen or when a map is displayed on two screens is stored. The data memory 70 stores road map data 72 read from the storage device 30 and route data 74 searched for routes. Furthermore, when displaying a map on two screens, scale information 76 relating to the scale of each screen is stored.

  FIG. 2 is a functional block diagram of the two-screen display program shown in FIG. As shown in the figure, the two-screen display program 66 includes an initial setting unit 100, a two-screen detection unit 110, a first scale holding unit 120, a second scale holding unit 130, a scale match determination unit 140, and a scale change. Part 160 is included.

  When performing the two-screen display, the initial setting unit 100 sets one of the left and right screens as a main screen or a sub-screen, and holds the setting contents. For example, when an instruction to change the scale of the screen is given by the remote controller 26, the main screen is selected as the operation target screen. When instructing with the touch panel 22, the touched screen is selected as the operation target screen. In this case, setting of the main screen is not necessarily required, and the touched screen becomes the main screen. In the following description, for the sake of convenience, the left screen 52a is a main screen and the right screen 52b is a subscreen.

  The initial setting unit 100 further initializes the scales of the main screen and the sub screen, and holds the scales. For example, the main screen can be set to a wide scale that displays a wide area, and the sub-screen can be set to a detailed scale that displays a detailed area. Alternatively, a plurality of scales may be prepared, and scales selected from them may be set on the main screen and the sub screen. For example, the scale is selected from a plurality of scales of 12 m, 25 m, 50 m, 100 m, 200 m,. This distance represents the size of the map that can be displayed on the screen.

  Furthermore, the initial setting unit 100 can set whether to use the automatic scale adjustment mode. As an example of the setting method, for example, when a slave screen is selected by the remote control operation unit 26, a button for setting on / off of the automatic scale adjustment mode can be displayed on the slave screen. In addition to this, when a specific key is selected, ON / OFF of the automatic adjustment mode may be set.

  The two-screen detection unit 110 detects that the display 52 has been switched from the one-screen display to the two-screen display. The switching of the display screen can be instructed by the user via the user input interface 20, for example. In addition to this, when a road map around the vehicle position is displayed, it may be automatically switched to a two-screen display.

  The first scale holding unit 120 holds the scale of the map displayed on the left screen 52a of the display 52, and the second scale holding unit 130 holds the scale of the map displayed on the right screen 52b of the display 52. When the two-screen display is detected by the two-screen detection unit 110, the first and second scale holding units 120 and 130 load the scales of the main screen and the sub-screen set by the initial setting unit 100, or the user When the scale change is instructed by, the scale is held.

  The scale match determination unit 140 determines whether the changed scale matches the scale held in the second scale holding unit 130 when the scale held in the first scale holding unit 120 is changed. To do. That is, when the scale of the main screen is changed, it is determined whether or not the scale of the main screen matches the scale of the sub screen.

  The scale change unit 150 changes the scale of the second scale holding unit 120 when the scale match determination unit 140 determines that the scales match. That is, when the scale of the main screen becomes equal to the scale of the sub screen, the scale of the sub screen is changed. This change is made to reflect the scale held in the initial setting unit 100. For example, if the main screen is initially set to the wide scale and the sub screen is initially set to the detailed scale, the sub screen scale is changed so as to maintain the magnitude relation of the scale.

  FIG. 2B shows a display example of a map on two screens. A detailed scale (for example, 25 m) map is displayed on the left screen 52a, and a wide-area scale (for example, 200 m) map is displayed on the right screen 52b. In addition, on the map, a vehicle position mark M indicating the vehicle position is synthesized and displayed.

  Next, the operation of the two-screen display in the navigation device of the present embodiment will be described with reference to the flowchart of FIG. In the navigation device, when the vehicle position is detected, road map data is read from the storage device 30 and a road map around the vehicle position is displayed on the display. Here, an example in which a map is displayed on two screens according to a user instruction will be described.

  When switching to the two-screen display is instructed by the user, the two-screen display is detected by the two-screen detection unit 110 (step S101). In response to this detection, the first and second scale holding units 120 and 130 load the scales of the main screen and the sub screen set by the initial setting unit 100 (step S102), and the display control unit 50 (FIG. 1) displays a map on the main screen and the sub-screen according to the scales held in the first and second scale holding units 120 and 130.

  When the user instructs to change the scale of the main screen (step S103), the scale of the first scale holding unit 120 is updated in response to the instruction (step S104). Next, the scale match determination unit 140 determines whether the scale of the first scale holding unit 120 matches the scale of the second scale holding unit 130, that is, whether the scale of the main screen matches the scale of the sub screen. It is determined whether or not (step S105). If they do not match, the scale of the secondary screen is not changed (step S106).

  When the scale of the main screen matches the scale of the sub screen, the scale changing unit 150 changes the scale of the sub screen so as to maintain the relationship between the initially set main screen and the sub screen (step S107). And the display control part 50 displays the map of a subscreen according to the changed scale.

  Next, a specific display example will be described. In the initial setting, the left screen 52a is set as the main screen, the right screen 52b is set as the sub screen, the scale of the main screen is set to 50 m, and the scale of the sub screen is set to 200 m. The selectable scales on the main screen and the sub screen are 50 m, 100 m, 200 m, 400 m, 800 m, 1.6 km, 3.2 km,. FIG. 4 shows an example in which the scale of the sub-screen is automatically adjusted when the user changes the scale of the main screen.

  In FIG. 4 (a), when the display is switched to the two-screen display, the main screen and the sub-screen display the maps with the scales 50m and 200m that are initially set. At this time, the first scale holding unit 120 holds an initially set 50 m scale, and the second scale holding unit 130 holds an initially set 200 m scale. Next, as shown in FIG. 4B, the user changes the scale of the main screen to 100 m. Thereby, the scale of the first scale holding unit 120 is rewritten to 100 m. Since the scales of the main screen and the sub screen do not match, the sub screen scale is not automatically adjusted.

  Next, as shown in FIG. 4C, the user changes the scale of the main screen to 200 m. Thereby, the scale of the first scale holding unit 120 is rewritten to 200 m. The scale match determination unit 140 confirms that the scale of the main screen matches the scale of the sub screen. Preferably, the scale coincidence determination unit 140 determines that the scales coincide when the coincidence state continues for a certain period. This is to determine whether or not the user has stopped changing the scale. If the scale coincidence determining unit 140 determines that there is a coincidence, the sub-screen scale automatic adjustment mode is entered.

  In response to the determination result of the scale coincidence determining unit 140, the scale changing unit 150, as shown in FIG. 4D, determines the scale of the sub-screen based on the magnitude relationship between the scales of the main screen and the sub-screen at the initial setting. Is changed from 200m to 400m. That is, the scale of the sub-screen is initially set so as to be larger than that of the main screen, and the scale of 400 m next to 200 m is selected to reflect the user's intention. Thereby, the scale of the second scale holding unit 130 is rewritten to 400 m.

  Since the screen subject to automatic adjustment is a sub-screen that is not subject to user operation, the scale change performed by the user is reflected as it is. Therefore, the user's intention is entrusted, and the user does not feel discomfort due to the scale change. Furthermore, after the scale of the main screen and the scale of the sub screen temporarily become the same scale (transition from (c) to (d) in FIG. 4), the sub screen scale is switched. There is an advantage that it is easy to understand the entry into the adjustment mode.

  If the user further changes the scale of the main screen to 400 m from the state shown in FIG. 4D, the scale match determination unit 140 determines the scale match, and the scale change unit 150 determines the scale of the sub-screen. Is changed to 800m.

  FIGS. 4G to 4K are examples when an operation for returning the scale of the main screen is performed. As shown in FIG. 4 (g), when the user changes the scale of the main screen to 200m as shown in FIG. 4 (h) from the state where the scale of the main screen is 400m and the scale of the sub-screen is 800, the scale The change unit 150 changes the scale of the sub screen to 400 m. Similarly, as shown in FIG. 4I, when the scale of the main screen is changed to 100 m, the scale of the sub-screen is changed to 200 m. As shown in FIG. 4 (j), when the scale of the main screen is changed to 50 m, the scale of the sub screen is equal to the initial setting value. Therefore, the scale of the sub screen remains 200 m and is not changed.

  The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific embodiments according to the present invention, and various modifications can be made within the scope of the gist of the present invention described in the claims. Deformation / change is possible.

It is a block diagram which shows the structure of the navigation apparatus which concerns on the Example of this invention. It is a functional block diagram of a two-screen display program. It is a flow explaining the scale automatic adjustment operation | movement of the 2 screen display in the navigation apparatus of a present Example. It is a figure which shows the specific example of the automatic adjustment of the scale of a subscreen when the scale of a main screen is changed.

Explanation of symbols

100: initial setting unit 110: two-screen detection unit 120: first scale holding unit 130: second scale holding unit 140: scale coincidence determining unit 150: scale changing unit

Claims (6)

A navigation device having a function of displaying maps on two screens on a display,
Setting means for setting the first scale information of the map displayed on the first screen and the second scale information of the map displayed on the second screen;
Determining means for determining whether the scale of the first screen matches the scale of the second screen when the scale of the first screen is changed;
A scale changing means for changing the scale of the second screen based on the magnitude relationship between the first and second scale information set in the setting means when the judgment means determines that they match,
A navigation device. The navigation device according to claim 1, further comprising user input means for changing a scale of the first screen by a remote controller or a touch panel. The navigation device according to claim 1, wherein the scale changing means selects one scale from a plurality of predetermined scales and changes the scale of the second screen. The navigation device further includes a first holding unit that holds a scale of the map displayed on the first screen, a second holding unit that holds the scale of the map displayed on the second screen, Map display means for displaying a map on the first screen in accordance with the scale held by the holding means and displaying the map on the second screen in accordance with the scale information held by the second holding means. The scale of the means is changed by the user input means, and the determination means compares the first holding means and the scale held by the second holding means. Navigation device. A map display method for displaying maps on two screens on a display,
Setting the first scale information of the map displayed on the first screen and the second scale information of the map displayed on the map of the second screen;
Determining whether the scale of the first screen matches the scale of the second screen when the scale of the first screen is changed;
A step of changing the scale of the second screen based on the magnitude relationship of the set first and second scale information when it is determined that both scales match;
Displaying a map on the second screen according to the changed scale;
A map display method comprising: A map display program for displaying maps on two screens on a display,
Setting the first scale information of the map displayed on the first screen and the second scale information of the map displayed on the map of the second screen;
Determining whether the scale of the first screen matches the scale of the second screen when the scale of the first screen is changed;
A step of changing the scale of the second screen based on the magnitude relationship of the set first and second scale information when it is determined that both scales match;
Displaying a map on the second screen according to the changed scale;
A map display program.

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