KR20070076562A - Method for guiding summary routes in navigation system - Google Patents

Abstract

A method for guiding summary routes in a navigation system is provided to enhance user convenience by enabling a user to easily obtain progress information on summarized route information. A GPS(Global Positioning System) receiver(110) receives navigation messages from a GPS satellite through an antenna. A sensor unit(120) includes plural sensors and detects an operation state of a moving object. A map data storage(130) stores map data. A controller(140) detects the current position of the moving object, matches the detected position to the map data, and provides navigation services to the user. A command input unit(160) generates an operation command according to manipulation of the user and inputs the operation command to the controller. A display unit(150) displays the map data, the current position of the moving object, and the moving path of the moving object on a screen. A voice guidance generator(170) generates a guiding voice signal and outputs the generated result through a speaker(180).

Description

Method for guiding summary routes in navigation system}

1 is a block diagram showing the configuration of a navigation system to which the summary path guidance method of the present invention is applied.

Figure 2 is a signal flow diagram showing a summary path guidance method of the present invention.

Figure 3 is a signal flow diagram illustrating the operation of generating a summary path in the summary path guide method of the present invention and display on the screen.

4A and 4B are views showing the state in which the summary path is displayed on the display unit according to the summary path guide method of the present invention.

Explanation of symbols on the main parts of the drawings

100: antenna 110: GPS receiver

120: sensor unit 130: map data storage unit

140: control unit 150: display unit

160: command input unit 170: guide voice generation unit

180: speaker

The present invention relates to a navigation system for searching a driving route of a predetermined moving object including a vehicle and guiding the moving object along the searched driving path. Particularly, the present invention relates to a PIP (Picture) on a part of the driving route guide screen displayed on the display unit. The summary path guidance method of a navigation system for guiding driving of a moving object while inserting a summary path screen into a picture, and displaying the summary path on which the search path of the searched moving object is reduced on the summary path screen.

The navigation system is a navigation message transmitted by a plurality of GPS satellites belonging to a Global Positioning System (GPS), and a moving object detected by a plurality of sensors installed in a moving object such as a gyroscope and a speed sensor. Detects the current position of the moving object currently being driven by using the state detection signals, matches the detected current position with the map data, and displays it on the display unit, and also provides a predetermined destination from the current position of the moving object or the starting point of the moving object through the map data. The present invention provides a function of guiding the driving route so as to search the driving route up to and driving the moving object along the searched driving route.

When the moving object travels along the searched driving path, a predetermined guide object including an intersection, an underground driveway, an overpass or a freeway entrance and exit road, etc., is searched in front of the moving object of the moving object, and the moving object of the search target is searched. When approaching within a predetermined distance, the driving route of the moving object at the guide target position is guided by a voice signal, etc., and the moving object is separated from the driving route to determine whether the route is to be driven on another road. When it is determined that the path of the moving object is notified to the user, the moving object can be accurately driven along the driving path.

In such a navigation system, when displaying the current position of the moving object together with a map on the driving route guide screen of the display unit, the user displays the map at such a scale that the user of the moving object can check the geographic information around the moving object. The map is positioned in the center of the driving route guide screen, and the map is moved and rotated so that the driving direction of the moving object is directed to the upper end of the driving route guide screen.

However, the above-described conventional technology does not display a map such that the upper center of the driving route guide screen is in the true north direction, so that the user of the moving object accurately determines which direction the moving vehicle is currently traveling with the map displayed on the driving route guide screen of the display unit. In addition, when traveling along the searched driving path, there was a problem in that it was not possible to determine how much the moving object traveled in the entire driving path.

Therefore, an object of the present invention is to reduce the driving route of the searched moving object to generate a summary route, and to insert and display the summary route screen displaying the summary route on the driving route guide screen of the moving object in a picture in picture (PIP). It provides a summary path guidance method of the system.

Another object of the present invention is to provide a summary path guidance method of a navigation system for displaying a summary path such that the upper center of the summary path screen is a true north direction, so that a user of the moving object can easily determine the driving direction of the moving object.

Summary of the Invention In the navigation system of the present invention having the above object, the control unit searches the driving route from the starting point to the destination of the moving object using the map data stored in the map data storage unit according to the driving route search command of the moving object. The searched driving route is displayed on the driving route guide screen of the display unit, the searched driving route is reduced to generate a summary route, and the generated summary route is displayed on the summary route screen of the display unit. The controller detects the current position of the moving object when the moving object moves, matches the detected current position with the map data, and then displays the moving path guide screen and the summary path screen.

The starting point and the current position of the moving object may be positions determined by mixed navigation using a navigation message received by a GPS receiver and a driving state detection signal of a moving object detected by a sensor installed in the moving object.

The generation of the summary route may include determining a reduction ratio for reducing the searched entire driving route, equally dividing the searched entire driving route with the determined reduction ratio, and selecting each area of the equally divided driving route one by one. A summary path is generated by selecting a node or shape point location closest to each other, and the reduction ratio is determined by determining the X-axis and Y-axis distances of the searched driving path based on the true north direction, and determining the determined X-axis and A reduction ratio for reducing the Y-axis distance to the X-axis and Y-axis sizes of the summary path screen is respectively calculated, and a reduction ratio having a larger value among the calculated X-axis and Y-axis reduction ratios is reduced in the searched driving route. Characterized in the ratio.

The display of the summary path screen displays the summary path such that the top center of the summary path screen faces the true north direction. And insert and display the PIP (Picture In Picture) function on the driving route guide screen of the display unit.

Hereinafter, with reference to the accompanying drawings will be described in detail the summary path guide method of the navigation system of the present invention.

1 is a block diagram showing the configuration of a navigation system to which the summary path guidance method of the present invention is applied. As shown therein, the GPS receiver 110 receives a navigation message transmitted by a plurality of GPS satellites through the antenna 100, a gyroscope for detecting a traveling angle of the moving object, and a speed for detecting a traveling speed of the moving object. A sensor unit 120 for detecting a driving state of a moving object by installing a plurality of sensors including a sensor, a map data storage unit 130 storing map data, the GPS receiver 110 and a sensor unit 120 The current position of the moving object is detected by the dead reckoning navigation using the detection signal of the), the current position of the detected moving object is matched with the map data stored in the map data storage unit 130, and the driving path of the moving object is searched and searched. The control unit 140 for guiding a driving route, a command input unit 160 for generating an operation command according to a user's operation, and inputting it to the control unit 140, and the control unit ( The display unit 150 displays the map data, the current position of the moving object and the driving route of the moving object on the screen, and generates a guide voice signal under the control of the controller 140 to the speaker 180 under the control of the controller 140. The guide voice generation unit 170 to output.

In the navigation system having such a configuration, when the user commands the driving route search of the moving object through the command input unit 160, the control unit 140 uses the map data stored in the map data storage unit 130 to depart from the destination of the moving object. Search for the driving route, and displays the searched driving route on the driving route guide screen of the display unit 150 so that the user can check.

Then, the searched driving route is reduced according to the summary route guidance method of the present invention to generate a summary route, and generate a summary route screen displaying the summary route so that the upper center of the screen is in the true north direction. Is output to the display unit 150, and the display unit 150 inserts and displays the summary route screen by the PIP function on the driving route guide screen.

In addition, when the moving object travels, the current position of the moving object is determined by the mixed navigation using the navigation message received by the GPS receiver 110 and the driving state detection signal of the moving object detected by the sensor unit 120. That is, the GPS receiver 110 receives a navigation message and outputs a value of dilution of precision (DOP) using the received navigation message, and the value of the DOP is a current position of the moving object calculated by the received navigation message. When there is reliability, the controller 140 determines the reliability of the navigation message based on the value of the DOP and detects the current position of the moving object with the navigation message when the reliability is low. If not, the current position of the moving object is detected by using a mixed navigation for detecting the current position of the moving object using the detection signal of the sensor unit 120 from the current position of the moving object detected by the reliable navigation message.

When the current position of the moving object is detected, the control unit 140 matches the detected current position of the moving object with the map data and outputs it to the display unit 150 to display the current position of the moving object on the driving route guide screen and the summary route guide screen. It is determined whether a predetermined guide object, such as an intersection or a branching point, is located within a set distance in front of the moving body of the moving object, and when the predetermined guide object is located, the guide voice generator 170 is controlled to control the guide voice generator. Generates a guide voice signal, and outputs the generated guide voice to the speaker 180 to guide the driving route of the moving object.

2 is a signal flow diagram showing a summary path guidance method of the present invention. As shown in FIG. 2, when the user operates the command input unit 160 to command the driving path search of the moving object in step 200, the controller 140 inputs the starting point and the destination of the moving object in step 202.

Here, the starting point of the moving object may be set to the current position of the moving object searched by the mixed navigation using the navigation message received by the GPS receiver 110 and the driving state detection signal of the moving object detected by the sensor unit 120.

When the starting point and the destination are input, the control unit 140 searches for the driving route from the starting point of the moving object to the destination using the map data stored in the map data storage unit 130 in step 204, and searches for the searched driving route. Output to the display unit 150 so that the user of the moving object can be confirmed.

In a next step 206, the controller 140 generates a summary route screen by generating a summary route reduced to the extent that the searched entire driving route can be displayed on a summary route screen, and displays the generated summary route screen. ), And it is inserted and displayed by the PIP function on the driving route guide screen.

Generation and display of the summary route in step 206, as shown in Figure 3, in step 300 to determine the X-axis and Y-axis distance of the searched all driving route based on the true north direction, step When all the driving paths searched at 302 are displayed on the summary path screen, the reduction ratio of the X-axis and Y-axis is calculated. For example, the size of the summary route screen is 60 × 60 pixels, and the distance when the X axis of the entire driving route is divided into 60 and the distance when the Y axis of the entire driving route is divided by 60 are calculated, respectively. Calculate the reduction ratio of the X and Y axes using the calculated distance.

In the next step 304, one of the calculated reduction ratios is selected, and the highest reduction ratio is selected, and in step 306, the reduction ratio of the X and Y axes of the traveling path of the searched moving object based on the true north direction is selected. In step 308, each area of the divided driving route is selected one by one.

In the next step 310, one node or shape point closest to the center of the driving path of each selected area is selected to determine the display position of the summary path in step 312.

In the next step 314, it is determined whether the generation of the summary path is completed, and when the determination of the summary path is not completed, the process returns to the step 308 to select each area of the divided driving path, In the driving route of each selected area, one node or shape point closest to the center is selected and the summary path is generated while repeating the operation of determining the display position of the summary path and generating the summary path. A summary route screen is generated by the summary route generated at 316. For example, as shown in FIGS. 4A and 4B, the summary route is a PIP function on the driving route guide screen 400 displayed on the display unit 150. The screen 410 is inserted and displayed.

Here, the summary route screen, except for the summary route, the starting point of the moving object, the destination and the current position of the moving object, the remaining area is transparent or translucent so that the map displayed on the driving route guide screen can be viewed through the summary route screen. It is preferable.

In the state of generating and displaying the summary path as described above, the controller 140 determines whether the moving object travels in step 208, and the navigation message and the sensor unit received by the GPS receiver 110 when the moving object travels. The current position of the moving object is detected by the mixed navigation using the traveling state detection signal of the moving object detected by the 120.

In the next step 212, the current position of the detected moving object is matched to the map data, and in step 214, the current position of the moving object matched with the map data is displayed on the driving route guide screen and the summary route screen.

In the next step 216, the control unit 140 determines whether the moving object has completed driving to the destination, and when the determination is not completed, the control unit 140 returns to the step 208 to determine the current position according to the moving of the moving object. After detecting and matching the current position of the detected moving object with the map data, the operation is repeatedly outputted and displayed on the driving route guide screen and the summary route screen, and is terminated when the moving object has completed driving to the destination.

On the other hand, while the present invention has been shown and described with respect to specific preferred embodiments, various modifications and changes of the present invention without departing from the spirit or field of the invention provided by the claims below It can be easily understood by those skilled in the art.

As described above, the present invention searches for the driving route of the moving object and guides the moving object along the searched driving path, thereby generating a summary path that reduces the entire driving path to the north-central direction of the upper center of the summary path screen. By displaying as, the user of the moving object can accurately determine in which direction the moving object is currently traveling on the summary path screen, and can easily check how much the user has traveled in the entire driving path.

Claims (7)

According to the driving route search command of the moving object, the control unit searches the driving route from the starting point of the moving object to the destination using the map data stored in the map data storage unit, and displays the searched driving route on the driving route guide screen of the display unit. Guiding driving; Generating a summary route by reducing the searched entire driving route to a predetermined size so as to display all of the searched driving routes, and displaying the generated summary route on a summary route screen of a display unit; And When the moving object travels along the searched driving path, the control unit detects the current position of the moving object, matches the detected current position with the map data, and displays the driving path guide screen and the summary path screen. Route guidance method of the navigation system consisting of. According to claim 1, wherein the starting point and the current position of the moving body; And a position determined by a mixed navigation using a navigation message received by a GPS receiver and a traveling state detection signal of a moving object detected by a sensor unit installed in the moving object. The method of claim 1, wherein the generating of the summary path comprises; Determining a reduction ratio for reducing the searched entire driving path; Equally dividing the searched entire driving paths by the determined reduction ratio; And And selecting each region of the equally divided driving paths one by one to select a node or shape point location closest to each other to generate a summary path. The method of claim 3, wherein the reduction ratio determination; Determining an X-axis and a Y-axis distance of the searched driving path based on a true north direction; Calculating a reduction ratio for reducing the determined X and Y axis distances to the X and Y axis sizes of the summary path screen, respectively; And And determining a reduction ratio having a large value among the calculated X-axis and Y-axis reduction ratios as a reduction ratio of the searched driving route. The display of claim 1, wherein the display of the summary path screen comprises: a; Summary route The summary route guidance method of a navigation system, characterized in that to display the summary route so that the top center of the screen toward the true north direction. The display of claim 1, wherein the display of the summary path screen comprises: a; Summary path guiding method of a navigation system, characterized in that the remaining area is displayed in a transparent or semi-transparent process, except for the summary path, the starting point, the destination of the moving object and the current position of the moving object. The display of claim 1, wherein the display of the summary path screen comprises: a; A summary route guidance method of a navigation system, characterized in that the display is inserted into the driving route guidance screen by a picture in picture (PIP) function.

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