JPH0793696A - Course guiding method for navigation system - Google Patents

Abstract

PURPOSE:To accurately perform course guidance without requiring a large amount of data and long operating time by adding the map coordinate of the nearest intersection of a destination at a main road level and guidance course data for detail road from the intersection to the destination on a destination setting list. CONSTITUTION:When the facility name of the destination is inputted by the operation of an operating means 6, the destination setting list is read out from a storage means 3 by a display computer 4. and the data of a guidance map in accordance with the map code is read out from the storage means 3, and the guidance map based on the data is displayed on a display means 5, and also, a guidance course from the present location to the nearest intersection derived from a position computer 2 is derived based on the map coordinate (x, y) of the nearest intersection in the destination setting list, and a guiding point is displayed on a displaying guidance map as a circle. Furthermore, desired facility that is the destination is displayed on the displaying guidance map based on the map coordinate of the destination.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a route guidance method of a navigation system for displaying a guidance route to a destination on a peripheral map of the destination.

[0002]

2. Description of the Related Art Conventionally, a navigation system is constructed, for example, as shown in FIG.
When the radio wave from the S satellite is received, the current position of the own vehicle is derived by the position detecting computer 2 which constitutes the position detecting means together with the GPS receiver, and the navigation guidance is stored in advance in the storage means 3 such as a floppy disk. Of the map data, the guide map data including the current position of the vehicle is read by the display computer 4 as a control means, and the read guide map data is read by the display means 5 such as an LCD under the control of the display computer 4. A guide map based on is displayed, and a predetermined mark indicating the current position of the vehicle is displayed on the guide map.

Furthermore, in order to guide the route to the destination, the map code assigned to the guide map of the surrounding area of each destination in the storage means 3 and the guide map of the destination. When a desired destination is set by operating the operating means 6 such as a cursor movement key, etc., a destination setting list including coordinates and the like is stored, and the destination setting of the set destination is made from the storage means 3. The list is read by the display computer 4, and the guide map data corresponding to the guide map code in the destination setting list is read from the storage means 3 by the display computer 4 and read by the display means 5. A guide map based on the data is displayed, and a guide route to a set destination is set based on the guide map data read by the display computer 4. Is derived, the guide route derived by the guide map displayed on the display unit 5 is adapted to be displayed.

At this time, the destination setting list is stored in the format shown in FIG. 5 in detail, and is assigned to each general destination name such as a public office, a park, a theater, a department store, or a supermarket. Classification code, facility name such as "○○ department store" corresponding to a specific destination, map code assigned to the guide map of the surrounding area including this facility name, and map coordinates of that facility (X,
Y) and the telephone number of the facility constitute the format of the destination setting list.

As a guide route to the destination, for example, the structure shown in FIG. 6 is provided, and the guide route to the hatched destination in the figure is displayed by a plurality of guide points indicated by circles. . The arrow in FIG. 6 indicates one-way traffic.

[0006]

However, in the case of the conventional route guidance, as shown in FIG. 6, a national highway including a highway,
Only guidance points at the main road level such as prefectural roads are displayed, and guidance points are not displayed for narrow streets below the main road level, so sufficient route guidance cannot be performed and guidance routes up to the narrow street level In order to display, it is necessary to perform complicated calculation based on the guide map data and the map coordinates of the destination to derive the guidance point on the narrow street, which requires a huge amount of data and a very long calculation time. Become.

Therefore, the present invention has been made in order to solve the above-mentioned problems, and accurately guides a route to a narrow street level without requiring a huge amount of data or a long calculation time. The purpose is to be able to.

[0008]

According to the route guidance method of the navigation system of the present invention, while the guide map data for navigation is stored in the storage means,
For each of the various destinations, a destination setting list including the map code assigned to the guide map of the area around the destination and the map coordinates of the destination is stored, and the desired destination is selected by operating the operating means. When setting, the destination setting list of the desired destination is read from the storage unit by the control unit, and the guide map data corresponding to the guide map code in the read destination setting list is read by the control unit. The guide map based on the read guide map data is read out from the storage means and displayed on the display means, and based on the read guide map data, the controller detects the current position of the vehicle from the position detecting means. Navigator for deriving a guide route to a desired destination and displaying the derived guide route on the guide map being displayed on the display means. In the route guidance method of the system, in the destination setting list, map coordinates of the nearest intersection of the destination at the main road level such as national roads and prefectural roads, and the main roads from the closest intersection to the destination. The guide route data for the narrow streets below the level is added, and the guide route for the narrow streets based on the guide route data for the narrow streets is displayed on the display means.

[0009]

In the present invention, the map coordinates of the nearest intersection of the destination at the main road level and the guide route data of the narrow street from the nearest intersection to the destination are added to the destination setting list. As a result, it is possible to display the guidance route at the narrow street level to the destination and perform accurate route guidance without requiring an enormous amount of data and a long calculation time as in the past.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an operation explanatory view of an embodiment of the present invention, FIG. 2 is a flow chart for explaining the operation, and FIG. 3 is an operation explanatory view.

However, since the navigation system applied to this embodiment has the same configuration as that shown in FIG. 4, reference will also be made to FIG. 4 in the following description.

FIG. 1 shows the format of the destination setting list to be stored in the storage means 3. What is different from FIG. 5 is that the destination setting list shown in FIG. Map coordinates of the nearest intersection (x,
y) and the map coordinates (x1, y1), (x) of the guidance point in the narrow street as guidance route data for the narrow street below the main road level between the nearest intersection and the destination.
2, y2), ... Are added.

Next, a series of operations will be described with reference to the flowchart of FIG.

When the destination is set by operating the operating means 6, that is, the desired facility name such as "XX department store" is input (step S1), the destination setting list of the set destination is displayed. The guide map data read out from the storage means 3 by the computer 4 and corresponding to the map code in the read destination setting list is further read out from the storage means 3 and the guide map based on this data is displayed on the display means 5. In addition, the guidance route from the current position derived by the position computer 2 to the nearest intersection is derived based on the map coordinates (x, y) of the nearest intersection in the destination setting list (step S2) and derived. The guide points on the guide route thus displayed are indicated by a circle on the displayed guide map (step S3).

Then, based on the map coordinates of the guide points on the narrow street in the read destination setting list, these guide points are indicated by a circle on the displayed guide map (step S4), and the destination is further displayed. Based on the map coordinates of the destination in the setting list, the desired facility, which is the destination, is displayed on the displayed guide map (step S5), and then the operation ends.

In this way, the guide route is displayed as shown in FIG. 3, but as can be seen by comparing with FIG. 6, even in the case of the guide route to the same destination, in the case of FIG. In addition to the guidance point indicating the nearest intersection indicated by (x, y), the guidance point on the narrow street indicated by coordinates (x1, y1), (x2, y2), ... Is added to the format of FIG. A more accurate display will be made as a guide route to the destination.

Therefore, it is possible to perform accurate route guidance to the level of a narrow street without requiring a huge amount of data and a long calculation time as in the conventional case.

Of course, the destination setting list is not limited to the format shown in FIG.

[0019]

As described above, according to the route guidance method of the navigation system of the present invention, the map coordinates of the nearest intersection of the destination at the main road level and the destination from the nearest intersection are included in the destination setting list. By adding the guide route data for narrow streets up to, it does not require enormous amount of data or long calculation time as in the past, and displays the guide route at the narrow street level to the destination for accurate route guidance. It can be performed and is extremely effective in improving the function of the navigation system.

[Brief description of drawings]

FIG. 1 is an operation explanatory diagram of an embodiment of the present invention.

FIG. 2 is a flowchart for explaining the operation of one embodiment.

FIG. 3 is a diagram illustrating the operation of the embodiment.

FIG. 4 is a block diagram of a general navigation system.

FIG. 5 is an explanatory diagram of an operation diagram of a conventional example.

FIG. 6 is an explanatory diagram of an operation diagram of a conventional example.

[Explanation of symbols]

 1 GPS Receiver 2 Position Detection Computer 3 Storage Means 4 Display Computer (Control Means) 5 Display Means 6 Operating Means

Claims (1)

[Claims] 1. A navigation guide map data is stored in a storage means, and a map code assigned to a guide map of a surrounding area of the destination and map coordinates of the destination are stored for each destination. When a desired destination is set by operating the operation means, the destination setting list including the destination setting list is stored, and the destination setting list of the desired destination is read from the storage means by the control means, and the read-out destination is set. The guide map data corresponding to the guide map code in the place setting list is read from the storage means by the control means, the guide map based on the read guide map data is displayed on the display means, and the read guide map is displayed. Based on the data of, the control means derives a guidance route from the current position of the vehicle by the position detection means to the desired destination In the route guidance method of the navigation system for displaying the guidance route derived on the guidance map displayed on the display means, the destination setting list includes the nearest destination of the destination at a main road level such as a national road or a prefectural road. The map coordinates of the intersection and the guide route data of the narrow street below the main road level between the nearest intersection and the destination are added, and the narrow street based on the guide route data of the narrow street is displayed on the display means. A route guidance method for a navigation system, characterized in that the route guidance is displayed.