KR20040031466A - Crossroad Course Guiding Method in Navigation System Using Mobile Terminal - Google Patents

Abstract

PURPOSE: A method for guiding a cross street path in a navigation system using a mobile terminal is provided to indicate an accurate direction by displaying another path in a cross street area as well as a progress direction on a screen when guiding the cross street path. CONSTITUTION: A mobile terminal inputs current location information and destination information, and transmits current location information and destination information to an information center through a mobile communication network(S100). The information center retrieves a driving path between a current location and a destination on the basis of previously stored map data(S101). The information center generates path guidance data for guiding at least one or more node points on the optimal driving path(S102), and judges whether a cross street exists on the path of the generation path guidance data(S103). If the cross street exists, the information center retrieves a peripheral map of the corresponding cross street and generates cross street guidance data according to the retrieved peripheral map(S104). The information center transmits the generated cross street guidance data together with the path guidance data through the mobile communication network(S105). The information center guides information in voice according to the path guidance data and the cross street guidance data for passing the node point and driving a car before the car passes the node point(S106-S111).

Description

Crossroad Course Guiding Method in Navigation System Using Mobile Terminal

The present invention relates to a route guidance method for an intersection in a navigation system using a mobile terminal, and more particularly, to a route guidance method for guiding a route in detail in consideration of a real situation when entering an intersection in a route guidance.

In general, a typical navigation system displays the current position of a moving object calculated using information received from a global positioning system (GPS) on a map displayed on a display screen. In addition, the navigation system displays various information necessary for driving such as displaying the moving direction of the moving object, the distance to the destination to be traveled, the current moving speed of the moving object, the path set before the driver, the optimum path to the destination, and the like. To provide. Such a navigation system (or GPS positioning device) is currently mounted on various kinds of moving objects such as ships, aircrafts, automobiles, etc., and is widely used to check the current position and moving speed of moving objects or determine a moving path. In particular, the navigation system receives a radio wave indicating latitude, longitude, altitude, etc. from a plurality of satellites belonging to GPS to calculate the current position of the moving object, and then visually displays or hears map information including the current position to the driver. Informs the enemy.

1 is a view showing the configuration of a general navigation system. In the following description, the navigation system is limited to a case where the navigation system is used in a vehicle.

Referring to FIG. 1, the navigation system includes an information center 100, a wireless network 200, a mobile terminal 300, and an intelligent transportation systems (ITS) terminal 400.

FIG. 2 illustrates that navigation information is provided through a mobile terminal according to FIG. 1. Referring to FIG. 2, the fastest path through which the vehicle can get to the destination by avoiding traffic jams is guided through the mobile terminal audibly or visually. The display unit (for example, LCD) of the mobile terminal displays information on the remaining distance to the destination ('about 17.5 km remaining') and information on the estimated time required ('about 25 minutes'). Information on the fastest route to avoid traffic jams ('Samsung crossroad + image representing right turn + 500m') is displayed. In addition, through the speaker of the mobile terminal, information on the fastest route through which the vehicle can avoid traffic congestion to the destination is output as voice ('the right turn at 500m').

However, the route guidance method simply displays only the direction of travel so that it is very ambiguous to recognize exactly which direction the intersection or intersection points when the route includes a complicated intersection or a continuous intersection in providing the route. In addition, there was a problem that causes frequent deviations from service users.

That is, as shown in FIG. 3, only the image of 'Hannam IC (Jamsil Bridge) + 2m to proceed in the direction of 2 o'clock' at the complex intersection is displayed on the screen without considering the actual situation when the intersection arrives, thereby being confused during actual driving. May cause

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, and provides a method for indicating the correct direction by displaying on the screen about the other direction as well as the traveling direction in the intersection area at the time of the route guidance. There is a purpose.

1 is an exemplary view showing a configuration of a general navigation system;

2 is an exemplary view illustrating that navigation information is provided through a mobile terminal according to FIG. 1;

3 is an exemplary view showing navigation information provided when a conventional vehicle arrives at an intersection;

4 is an exemplary view showing an intersection route guidance operation process according to the present invention;

5 is an exemplary view showing navigation information provided when a vehicle arrives at an intersection according to the present invention;

Figure 6 is an exemplary view showing another intersection route guidance operation according to the present invention.

<Description of Symbols for Main Parts of Drawings>

100: Information Center 200: Mobile Communication Network

300: mobile terminal 400: intelligent transport system (ITS) terminal

In order to achieve the above object, an intersection route guidance method in a navigation system using a mobile terminal of the present invention comprises: an initial information transmission step of inputting current location information and destination information and transmitting the information to a information center through a mobile communication network; A guidance route search step of searching for the driving route between the current location and the destination in the information center based on previously stored map data; An intersection determination step of generating path guidance data for guiding at least one or more node points on the optimal driving path in the information center, and then determining whether an intersection exists on a path of the generated guidance data; A data transmission step of searching for a neighboring map of the corresponding intersection, generating intersection guidance data according to the determination result of the intersection determination step, and transmitting the guide data along with the guidance data through the mobile communication network; According to the route guidance data and the intersection guidance data characterized in that it consists of a driving guidance step for guiding the information to run through the node point by voice before the vehicle passes through the node point.

Hereinafter, an operation process of an embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, a navigation system for applying the present invention includes an information center 100, a mobile communication network 200, a mobile terminal 300, and an intelligent transportation systems (ITS) terminal 400.

Referring to the accompanying drawings, the operation of an embodiment configured as described above is as follows.

4 is an exemplary view illustrating a route guide operation process according to the present invention. As shown in FIG. 4, the user inputs current location information and destination information through the mobile terminal 300 to the information center 100 through the mobile communication network. When transmitting (S100), the information center 100 retrieves the driving route based on the map data stored in the database of the information center 100 when the current location information and the destination information are received together with the service request (S101). When the search is completed, the information center 100 generates route guidance data for guiding at least one or more node points on the optimal driving route (S102).

Subsequently, it is determined whether an intersection exists on the path of the generated guidance data (S103). When the intersection exists, the neighboring map of the corresponding intersection is searched based on the map data, and the intersection according to the search result is determined. The guide data is generated, and when the intersection guide data is generated, the path angle of the intersection composed of the vector values is included in the intersection guide data (S104).

Thereafter, the intersection guidance data along with the route guidance data is transmitted through the mobile communication network 200 (S105).

After receiving and storing route guidance data and intersection guidance data transmitted through the mobile communication network 200 (S106), when the vehicle starts to travel after arriving at a starting point, the ITS terminal 400 may store the route guidance data. Accordingly, before the vehicle passes through the node point, a route guide service for displaying information to be driven through the node point on the voice message and the screen through the mobile terminal 300 is started (S107).

When arriving at the intersection while performing the route guidance operation, as shown in FIG. 5, the mobile terminal 300 outputs a voice message notifying the intersection and simultaneously the current location and the road around the intersection based on the intersection guidance data. Differentiating from and displays a screen displaying the entrance / exit path according to the intersection path angle using a vector angle (S108 ~ S109).

After the predetermined time has elapsed, if it is determined that the GPS signal is received and passed through the intersection, the normal route guidance service is performed (S110 to S111).

In addition, in order to solve the memory problem of the mobile terminal when displaying on the screen, the map around the intersection is simply drawn on the virtual machine (VM) without implementing various symbols.

6 is a view showing another route guidance operation according to the present invention, as shown in the user inputs the current location information and the destination information via the mobile terminal 300 through the mobile communication network information center (100) In step S200, the information center 100 searches for a driving route based on the current location information and the destination information based on map data stored in a database of the information center 100 (S201).

Thereafter, path guidance data is generated for guiding at least one or more node points on an optimal driving path through the search. When the path guidance data is generated, it is determined whether an intersection exists on the path (S202). In the case of searching the surrounding map of the intersection to generate the intersection guidance data (S203), and then generate the route guidance data including this (S204), if it does not exist the general route guidance data is generated ( S205).

The generated route guidance data is transmitted through the mobile communication network 200, and the mobile terminal 300 receives the stored route guidance data, and before the vehicle passes through the node point according to the stored route guidance data, the node point is stored. The information to be driven through the start of voice guidance (S206 ~ 207).

When arriving at the intersection while performing the operation of step S207, as shown in FIG. 5, the mobile terminal 300 outputs a voice message notifying the intersection and simultaneously displays the current location and the location based on the intersection guidance data. A screen displaying the entry / exit roads according to the intersection path angle using the vector angle is displayed by being distinguished from the road around the intersection (S208 to S209).

After the predetermined time has elapsed, if it is determined that the GPS signal is received and passed through the intersection, the normal route guidance service is performed (S210 to S211).

As such, those skilled in the art will appreciate that the present invention can be implemented in other specific forms without changing the technical spirit or essential features thereof. Therefore, the above-described embodiments are to be understood as illustrative in all respects and not as restrictive. The scope of the present invention is shown by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

As described above, the intersection route guidance method in the navigation system using the mobile terminal of the present invention accurately displays any intersection on the screen and instructs the direction according to the actual road situation, thereby preventing confusion during actual driving. It is effective in preventing frequent departures.

Claims (8)

An initial information transmission step of inputting current location information and destination information and transmitting the information to the information center through a mobile communication network; A guidance route search step of searching for the driving route between the current location and the destination in the information center based on previously stored map data; An intersection determination step of generating path guidance data for guiding at least one or more node points on the optimal driving path in the information center, and then determining whether an intersection exists on a path of the generated guidance data; A data transmission step of searching for a neighboring map of the corresponding intersection, generating intersection guidance data according to the determination result of the intersection determination step, and transmitting the guide data along with the guidance data through the mobile communication network; Intersection in a navigation system using a mobile terminal, characterized in that the driving guidance step of guiding the information to be driven through the node point before the vehicle passes the node point in accordance with the route guidance data and intersection guidance data. How to get directions. The method of claim 1, wherein the data transmission step Intersection route guidance method in a navigation system using a mobile terminal, characterized in that included in the intersection guidance data, the angle of the intersection of the vector value when the intersection guidance data generation. According to claim 1, The driving guide step A first step of receiving and storing route guidance data and intersection guidance data transmitted through a mobile communication network; A second step of guiding voice information to travel through the node point before the vehicle passes the node point according to the route guidance data stored by the first step; A third step of displaying a screen displaying the entry / exit roads separately from the roads around the intersections with guide messages based on the intersection guidance data when the intersections are reached during the operation of the second step; A fourth step of determining the passage of the intersection according to the reception of the GPS signal after a predetermined time elapses after the execution of the third step is completed; And a fifth step of performing a normal route guidance service when it is determined that the result of the determination of the fourth stage has been passed. According to claim 1, The driving guide step An intersection route guidance method in a navigation system using a mobile terminal, characterized by drawing a map around an intersection on a virtual machine of the mobile terminal. An initial information transmission step of inputting current location information and destination information and transmitting the information to the information center through a mobile communication network; Search for the driving route between the current location and the destination in the information center based on the pre-stored map data, and at least one node point on the optimal driving route according to the presence or absence of the intersection on the route guidance data; A guide path search and transmission step of generating path guidance data for guiding the information and transmitting the same through the mobile communication network; Intersection route guidance method in a navigation system using a mobile terminal, characterized in that consisting of a driving guidance step for guiding the information to travel through the node point before the vehicle passes the node point in accordance with the route guidance data. The method of claim 1, wherein the guide path search and transmission step When the intersection exists on the route, the intersection route guidance method in a navigation system using a mobile terminal, comprising the path angle of the intersection consisting of the vector value in the guidance route data when generating the guidance route data. According to claim 1, The driving guide step A first step of receiving and storing route guidance data and intersection guidance data transmitted through a mobile communication network; A second step of guiding voice information to travel through the node point before the vehicle passes the node point according to the route guidance data stored by the first step; A third step of displaying a screen displaying the entry / exit roads separately from the roads around the intersections with guide messages based on the intersection guidance data when the intersections are reached during the operation of the second step; A fourth step of determining the passage of the intersection according to the reception of the GPS signal after a predetermined time elapses after the execution of the third step is completed; And a fifth step of performing a normal route guidance service when it is determined that the result of the determination of the fourth stage has been passed. According to claim 1, The driving guide step An intersection route guidance method in a navigation system using a mobile terminal, characterized by drawing a map around an intersection on a virtual machine of the mobile terminal.