KR101105813B1 - Path search method - Google Patents

Abstract

The route retrieval method is executed in a navigation device that displays a movement route from the first place to the second place. The navigation device uses a screen coordinate system when dynamically displaying at least a portion of a map on a screen, and uses a map coordinate system when obtaining map coordinates for the screen coordinate system. The method includes selecting the second place, obtaining map coordinates of the map coordinate system for the selected second place, and whether there is a second closed area associated with the selected second place based on the obtained map coordinates. And if the second location is in the second closed area, including one of the paths between each of the at least one second passageway and the first location based on the preference information in the movement path. Include. The second closed region is embodied in polygons and includes information about at least one second passageway for the second place, each of the at least one second passageways being at an entrance, exit, or entrance to the second place. Corresponds.

Description

Path search method {PATH SEARCH METHOD}

The disclosed technique relates to a route search method, and more particularly, to a method for searching for an appropriate route on a map.

When the user moves to the destination, the user may search for the destination on the go with a mobile device (eg, a smartphone) or move the destination to the computing system in advance. For example, for searching a user may use a portal site service (e.g., the next map service).

Among the embodiments, the route retrieval method is executed in a navigation device displaying a movement route from the first place to the second place. The navigation device uses a screen coordinate system when dynamically displaying at least a portion of a map on a screen, and uses a map coordinate system when obtaining map coordinates for the screen coordinate system. The method includes selecting the second place, obtaining map coordinates of the map coordinate system for the selected second place, and whether there is a second closed area associated with the selected second place based on the obtained map coordinates. And if the second location is in the second closed area, including one of the paths between each of the at least one second passageway and the first location based on the preference information in the movement path. Include. The second closed region is embodied in polygons and includes information about at least one second passageway for the second place, each of the at least one second passageways being at an entrance, exit, or entrance to the second place. Corresponds.

Among the embodiments, the route retrieval method is executed in a navigation system including a navigation device displaying a movement route from a first place to a second place and a navigation server connected to the navigation device. The navigation device uses a screen coordinate system when dynamically displaying at least a portion of a map on a screen, and the navigation server uses a map coordinate system. The navigation device selects the first and second locations. The navigation server obtains first and second map coordinates of the map coordinate system for the selected first and second places, respectively. The navigation server checks whether there are first and second closed areas associated with the selected first and second locations, respectively, based on the obtained first and second map coordinates. The first and second closed regions are each formed of polygons and include information regarding at least one first and second passageway for the first and second locations, respectively, and the at least one first And each of the second passages corresponds to an entrance, exit, or entrance to the first location. If the first and second locations are within the first and second closed areas, the navigation server includes one of the at least one first or second passage in the movement path based on the preference information. . The navigation device displays the movement path.

Among the embodiments, the route retrieval method is executed in a navigation system including a navigation device displaying a movement route from a first place to a second place and a navigation server connected to the navigation device. The navigation device uses a screen coordinate system when dynamically displaying at least a portion of a map on a screen, and the navigation server uses a map coordinate system. The navigation device selects the second place. The navigation server obtains map coordinates of the map coordinate system for the selected second place. The navigation server checks whether there is a first closed area associated with the first location. The first closed area is embodied in polygons and includes information about at least one first passageway for the first location, each of the at least one first passageway being at an entrance, exit, or entrance to the first location. Corresponds. The navigation server checks whether there is a second closed area associated with the selected second location based on the obtained map coordinates. The second closed region is embodied in polygons and includes information about at least one second passageway for the second place, each of the at least one second passageways being at an entrance, exit, or entrance to the second place. Corresponds. The navigation server includes a route for the first and / or second passage in the movement route based on the preference information if the first or second place is in the first or second closed area.

1 is a view for explaining a navigation system according to an embodiment of the disclosed technology.
FIG. 2 is a diagram for explaining a map of a specific area displayed by the navigation device of FIG. 1.
FIG. 3 is a flowchart illustrating a path searching method performed by the navigation device of FIG. 1.
FIG. 4 is a diagram for explaining a map of a specific area displayed by the navigation device of FIG. 1.
FIG. 5 is a flowchart illustrating a path searching method performed by the navigation device of FIG. 1.
FIG. 6 is a diagram for explaining at least part of the combination of the first place and the second place in FIG. 4.
FIG. 7 is a view for explaining a part of a path determined by the navigation system of FIG. 1.

The description of the disclosed technique is merely an example for structural or functional explanation and the scope of the disclosed technology should not be construed as being limited by the embodiments described in the text. That is, the embodiments may be variously modified and may have various forms, and thus the scope of the disclosed technology should be understood to include equivalents capable of realizing the technical idea.

On the other hand, the meaning of the terms described in the present application should be understood as follows.

The terms " first ", " second ", and the like are used to distinguish one element from another and should not be limited by these terms. For example, the first component may be named a second component, and similarly, the second component may also be named a first component.

The term “and / or” should be understood to include all combinations that can be suggested from one or more related items. For example, the meaning of “first item, second item and / or third item” may be given from two or more of the first, second or third items as well as the first, second or third items. Any combination of the possible items.

When a component is referred to as being "connected" to another component, it should be understood that there may be other components in between, although it may be directly connected to the other component. On the other hand, when an element is referred to as being "directly connected" to another element, it should be understood that there are no other elements in between. On the other hand, other expressions describing the relationship between the components, such as "between" and "immediately between" or "neighboring to" and "directly neighboring to", should be interpreted as well.

Singular expressions should be understood to include plural expressions unless the context clearly indicates otherwise, and terms such as "include" or "have" refer to features, numbers, steps, operations, components, parts, or parts thereof described. It is to be understood that the combination is intended to be present, but not to exclude in advance the possibility of the presence or addition of one or more other features or numbers, steps, operations, components, parts or combinations thereof.

For each step, the identifiers (e.g., a, b, c, ...) are used for convenience of description, and the identifiers do not describe the order of the steps, and each step is clearly contextual. Unless stated in a specific order, it may occur differently from the stated order. That is, each step may occur in the same order as specified, may be performed substantially simultaneously, or may be performed in the reverse order.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. Terms defined in commonly used dictionaries should be interpreted to be consistent with meaning in the context of the relevant art and can not be construed as having ideal or overly formal meaning unless expressly defined in the present application.

1 is a view for explaining a navigation system according to an embodiment of the disclosed technology.

Referring to FIG. 1, the navigation system 100 includes a navigation device 110 and a navigation server 120, and the navigation device 110 and the navigation server 120 include a cellular network and a WLAN. Wireless LAN) or wired LAN.

The navigation device 110 is a device that displays a route between a departure point and a destination, and may correspond to the smartphone 110a or the computing system 110b (eg, a notebook, a desktop, etc.) in one embodiment.

In an embodiment, the navigation device 110 and the navigation server 120 may interwork with each other to perform a route search. That is, the navigation server 120 may interwork with the navigation device 110 and perform a route search in response to a real time request of the navigation device 110. In one embodiment, the map may be stored by the navigation server 120, and in another embodiment, the map may be stored on a map server (not shown) separate from the navigation server 120. If the navigation server 120 includes a function of a map server (not shown), in response to a map request of a specific region, the navigation server 120 may display a map near a specific region including the specific region. ) Can be sent. If the navigation server 120 does not include the function of the map server (not shown), the map server (not shown) may request the request through the navigation server 120 or directly in conjunction with the navigation device 110. The received map may be transmitted to the navigation device 110.

In another embodiment, the navigation device 110 may independently perform route search without interworking with the navigation device 110. The navigation device 110 may store a map for searching for a route. Here, the navigation server 120 may be used to update the navigation device 110 or to update the map stored in the navigation device 110 if the navigation server 120 stores the map.

FIG. 2 is a diagram illustrating a map of a specific area displayed by the navigation device of FIG. 1, and FIG. 3 is a flowchart illustrating a route search method performed by the navigation device of FIG. 1.

2 assumes that the navigation device 110 searches the route between the first place 210 and the second place 220 by itself. However, this is for convenience of description, and considering the contents of FIG. 4, the linkage between the navigation device 110 and the navigation server 120 may also be easily described.

In one embodiment, the first location 210 may correspond to the current location. For example, if the navigation device 110 corresponds to a smartphone with GPS, the navigation device 110 can more easily obtain the current location. In another embodiment, the first location 210 may correspond to a departure point selected by the user. For example, a starting point may be input by a user as a search word. As another example, the starting point may be input through a user event such as a click or a touch of a screen.

In one embodiment, the second location 220 may correspond to a destination. The destination may be input by a user as a search word or through a user event such as a click or a touch of a screen.

As illustrated in FIG. 2, the navigation device 110 may dynamically display at least a portion of the map (eg, Gwanak-gu, Seoul), and the displayed map may use a screen coordinate system. In addition, the navigation device 110 may store the entire map, and the entire map may use a map coordinate system. Here, the dynamic means that the navigation device 110 can change the map displayed under the control of the user. The screen coordinate system may be provided by the navigation apparatus 110 as a coordinate system (for example, a coordinate system used in the displayed map) for the actual screen of the graphic system.

The navigation device 110 selects the second place 220 under user control (step S310). In one embodiment, the navigation device 110 may obtain the relative coordinates (that is, coordinates used in the displayed map) in which the user event occurred in the screen coordinate system. For example, the user event may correspond to a click or touch on the screen and the user event may occur within the second location 220.

The navigation device 110 obtains map coordinates of the map coordinate system for the second place 220 (step S320). The navigation device 110 converts relative coordinates (ie, coordinates used in the currently displayed map) into map coordinates (ie, coordinates used in the entire map). In one embodiment, the map coordinates may correspond to absolute coordinates (ie, fixed coordinates such as GPS coordinates). In another embodiment, the map coordinates may correspond to any coordinates that may be used according to the map (ie, the coordinates used on that map). Map coordinates may be the same as relative coordinates in a particular map. In one embodiment, the navigation device 110 may perform the conversion process when the scale of the screen coordinate system for the displayed map exceeds a predetermined magnification. This is because, when the scale of the displayed map is small, the probability that the click or touch by the user is not an event for selecting a destination is high.

The navigation device 110 checks whether there is a second closed area 230 associated with the second place 220 based on the map coordinates (step S330). Here, the second closed region 230 is implemented with a polygon. This is because polygons can more easily represent various types of regions. The second closed area 230 includes information about at least one second passage 240 for the second location 220. In the polygon, each of the second passageways 240 may correspond to a vertex. Each of the at least one second passageway 240 corresponds to an entrance, exit, or entrance to the second location 220. This is because a passage for moving to the second place 220 may be classified as an entrance, an exit, or an entrance. For example, in the case of the second location 220, each of the two passages 240a and 240b may correspond to an entrance. The passageway may include a boundary (eg, a vertex) of the second closed area 230 or any location inside or outside the second closed area 230 (eg, a passage connected to the basement, an outside parking lot). And the passageway may correspond to one of an entrance, an exit, or an entrance to the second location 220.

In one embodiment, the navigation device 110 may display the polygon in a solid line or a dotted line as shown in FIG. 2 to facilitate user identification when the second closed area 230 is present. In another embodiment, the navigation device 110 may display an area of the polygon differently. For example, the area of the polygon may be treated in a hatch manner or a translucent manner.

If the second location 220 corresponds to a specific location in the second closed area 230, the navigation device 110 may determine each of the at least one second passageway 240a and 240b and the first location based on the preference information. One of the paths between 210 is included in the movement path (step S340). In FIG. 2, the first route may correspond to the route between the passageway 240a and the first place 210 and the second route may correspond to the route between the passageway 240b and the first place 210. In order to move from the first location 210 to the second location 220, the navigation device 110 may select one of the first path and the second path.

The preference information may be arbitrarily set by the user and used when moving from the first place 210 to the second place 220 having at least one passageway. The path through the preference information will be described later with reference to FIG. 6.

In one embodiment, the preference information includes the shortest travel distance between the paths (ie, the first path and the second path) between each of the two second passages 240a and 240b and the first location 210, and the shortest movement between the paths. It may include information regarding a time or the minimum number of rotations between the paths (hereinafter, the first information). The shortest travel distance may be determined based on a straight line distance between the passages 240a and 240b for the first location 210 and the second location 220 in one embodiment, and in another embodiment the first location 210. And the actual driving road between the passages 240a and 240b for the second place 220, respectively. The shortest travel time may be calculated based on the current traffic volume or the estimated traffic volume. The minimum number of turns is based on the number of turns (eg, left turn, right turn, U-turn) that occur on the actual driving road between the passages 240a and 240b for the first place 210 and the second place 220, respectively. Can be determined.

In another embodiment, the preference information may include information regarding the shortest moving distance or the minimum number of rotations between the at least one second passageway 240a and 240b and the second place 220 (hereinafter, the second information). have. The shortest travel distance may be determined based on a straight line distance between each of the passages 240a and 240b for the second place 220 and the second place 220 in one embodiment, and in another embodiment the second place 220. It may be determined based on the actual driving road between each of the passages (240a, 240b) and the second place 220 for the. The minimum number of turns is based on the number of turns (eg, left turn, right turn, U-turn) that occur on the actual driving road between the passages 240a and 240b for the second place 220 and the second place 220, respectively. Can be determined.

In another embodiment, the preference information may include both the first information and the second information.

FIG. 4 is a diagram illustrating a map of a specific area displayed by the navigation device of FIG. 1, and FIG. 5 is a flowchart illustrating a route search method performed by the navigation device of FIG. 1.

FIG. 4 assumes that the navigation device 110 searches for a route between the first place 210 and the second place 220 in association with the navigation server 120. However, this is for convenience of description and considering the contents of FIG. 2 together, the navigation device 110 may be easily performed. Since the terminology used in FIG. 4 is substantially the same as that described in FIG. 2, the description thereof is omitted here.

The navigation device 110 selects the first place 410 and the second place 420 under user control (step S510). Each of the first and second places 410 and 420 may be selected by a search keyword or a user event such as a click or a touch. In one embodiment, the first location 410 may correspond to the current location of the navigation device 110.

The navigation server 120 obtains first and second map coordinates of the map coordinate system for the first and second places 410 and 420, respectively (step S520). In one embodiment, the first and second map coordinates may be calculated by the navigation device 110.

The navigation server 120 checks whether there are first and second closed areas associated with the first and second places 410 and 420 based on the first and second map coordinates, respectively (step S530). Here, the first closed region 430 and the second closed region 440 are each formed of polygons. The first closed area 430 and the second closed area 440 are information about at least one first passage 450 and the second passage 460 for the first place 410 and the second place 420. It includes. Each of the at least one first passageway and the second passageway 450, 460 corresponds to an entrance, exit, or entrance to the first location 410 and the second location 420, respectively. For example, in the case of the first location 410, each of the five passages 450a to 450e may correspond to an entrance and exit. Also, for the second location 460, the passage 460a may correspond to the outlet, the passage 460b may correspond to the inlet, the passage 460c may correspond to the inlet, and the passage 460d may correspond to the inlet.

When the first and second locations 410 and 420 are in the first and second closed areas 430 and 440, the navigation server 120 may determine at least one first or second passage based on the preference information. Is included in the movement path (step S540). Here, one of the first passageways may correspond to an entry and exit (eg, 450a) for the first location 410. One of the second passageways may correspond to an entrance to the second location 420 (eg, 460b).

In one embodiment, the preference information includes information (hereinafter referred to as third information) regarding information regarding the shortest travel distance, the shortest travel time, or the minimum number of revolutions between each of the at least one first and second passages 450 and 460. can do. In another embodiment, the preference information may include information (hereinafter, fourth information) regarding a shortest distance or a minimum number of rotations between each of the at least one first passage 450 and the first place 410. In another embodiment, the preference information may include information regarding the shortest distance or the minimum number of rotations between each of the at least one second passage 460 and the second place 420 (hereinafter, fifth information). In another embodiment, the preference information may include any combination of third to fifth information.

FIG. 6 is a diagram for explaining at least part of the combination of the first place and the second place in FIG. 4.

6A to 6C may correspond to a path searched by the navigation device 110 or the navigation server 120 based on the preference information.

In Fig. 6 (A), the navigation server 120 selects the exit from the starting point S to the destination D near the exit and the entrance close to the starting point. In the case of FIG. 6 (A), although not necessarily, the selected route may correspond to the shortest route of the route from the origin S to the destination D. FIG. For example, if the preference information corresponds to the shortest path, the path may be searched as shown in FIG. 6 (A).

In FIG. 6 (B), the navigation server 120 selects the path from the starting point S to the destination D near the exit and the entrance close to the destination. In the case of FIG. 6 (B), although not necessarily, the selected route may correspond to the longest but most mobile route of the route from origin S to destination D. FIG. For example, if the preference information corresponds to the minimum number of turns, the path may be searched as shown in FIG. 6 (B).

In FIG. 6C, the navigation server 120 selects an exit close to the starting point and an entrance close to the starting point from the starting point S to the destination D. FIG. In the case of FIG. 6C, although not necessarily, the selected route may correspond to the earliest of the routes from the origin S to the destination D. FIG. For example, if the preference information corresponds to the fastest route, the route may be searched as shown in FIG. 6C.

The navigation device 110 displays the movement path (step S550).

FIG. 7 is a view for explaining a part of a path determined by the navigation system of FIG. 1.

In FIG. 7, the navigation server 120 obtains rotation map coordinates for the rotation location 715 on the movement path 710 as it moves from the first location 720 to the second location 730. The navigation server 120 searches for the milestone 740 near the rotational map coordinates and transmits the milestone 740 and the map coordinates of the milestone 740 to the navigation device 110. In addition, the navigation device 110 converts the map coordinates of the milestone 740 into screen coordinates, and displays the milestone 740 near the screen coordinates. This is to make it easy for the user to follow the path.

2 to 3 assume that the navigation device 110 performs a route search alone, and FIGS. 4 to 5 assume that the navigation device 110 and the navigation server 120 perform route searches. These are for convenience of description, and in FIGS. 2 to 3, the navigation device 110 and the navigation server 120 may perform a route search in conjunction with each other, and FIGS. 4 to 5 show the navigation device 110 alone. You can do a route search.

The disclosed technique may have the following effects. It is to be understood, however, that the scope of the disclosed technology is not to be construed as limited thereby, as it is not meant to imply that a particular embodiment should include all of the following effects or only the following effects.

The navigation system according to an embodiment may provide a better route when a place having at least one passage corresponds to a departure point or a destination. For example, the path may correspond to the fastest path, the shortest path, or the easiest path with fewer turns.

According to an exemplary embodiment, when a place having at least one passage is selected as a starting point or a destination, the navigation system may search for a route in consideration of the passage. In addition, the navigation system distinguishes the entrance and the exit, thereby guiding a more accurate route.

The navigation system according to one embodiment provides a convenient data structure for a place having at least one passageway. Polygons can help to easily implement the site and the passage to the place.

Although described above with reference to a preferred embodiment of the present invention, those skilled in the art will be variously modified and changed within the scope of the invention without departing from the spirit and scope of the invention described in the claims below I can understand that you can.

Claims (10)

A route search method performed in a navigation device that displays a movement route from a first place to a second place, the navigation device using a screen coordinate system and dynamically displaying at least a portion of a map on a screen. Use map coordinate system to get map coordinates for
Selecting the second place;
Obtaining map coordinates of the map coordinate system for the selected second place;
Checking whether there is a second closed area associated with the selected second location based on the obtained map coordinates, wherein the second closed area is embodied in polygon and relates to at least one second passageway to the second location; Information, wherein each of the at least one second passageway corresponds to an entrance, exit, or entrance to the second place;
If the second location is in the second closed area, including the path between each of the at least one second passage and the first location on the basis of the preference information; . The method of claim 1, wherein the preference information is
(1) information regarding the shortest travel distance, the shortest travel time or the minimum number of turns between the path between each of the at least one second passageway and the first location, and / or (2) each of the at least one second passageway and the first A route retrieving method comprising information on the shortest moving distance or the minimum number of turns between two places. The method of claim 2, wherein the first place is
And a route search method corresponding to the current position of the navigation device. The method of claim 3, wherein the navigation device
Route search method, characterized in that corresponding to the smart phone including a GPS (Global Positioning System). The method of claim 1, wherein selecting the second location
Obtaining relative coordinates of occurrence of a user event in the screen coordinate system;
Determining whether the scale of the screen coordinate system exceeds a predetermined magnification;
If so, further comprising converting the obtained relative coordinates to relative map coordinates. A route search method executed in a navigation system including a navigation device displaying a movement route from a first place to a second place and a navigation server connected to the navigation device, wherein the navigation device dynamically moves at least a portion of a map on a screen. Display using the screen coordinate system and the navigation server uses the map coordinate system.
The navigation device selecting the first and second locations;
The navigation server obtaining first and second map coordinates of the map coordinate system for the selected first and second places respectively;
The navigation server checking whether there are first and second closed areas associated with the selected first and second locations based on the obtained first and second map coordinates, respectively-the first and second closed Regions are each embodied in a polygon and each contain information about at least one first and second passageway for the first and second locations, each of the at least one first and second passageway Corresponds to an entrance, exit, or entrance to each of the first and second locations;
If the first and second locations are within the first and second closed areas, the navigation server includes one of the at least one first or second passage in the movement path based on the preference information. step; And
And the navigation device displays the movement route. The method of claim 6, wherein the preference information is
(1) information about information regarding a shortest travel distance, a shortest travel time, or a minimum number of revolutions between each of the at least one first and second passages, and (2) between each of the at least one first passages and the first location. Information regarding the shortest distance or the minimum number of turns and / or (3) information on the shortest distance or the minimum number of turns between each of the at least one second passageway and the second location. The method of claim 6, wherein the route search method
The navigation server obtaining rotational map coordinates for a rotational position on the movement path; And
And the navigation server searching for a milestone near the obtained rotation map coordinates and transmitting the retrieved milestones and map coordinates of the retrieved milestones to the navigation device. The method of claim 8, wherein the route search method
The navigation device converting map coordinates of the searched milestones into screen coordinates; And
And displaying the milestone in the vicinity of the converted screen coordinates. A route search method executed in a navigation system including a navigation device displaying a movement route from a first place to a second place and a navigation server connected to the navigation device, wherein the navigation device dynamically moves at least a portion of a map on a screen. Display using the screen coordinate system and the navigation server uses the map coordinate system.
The navigation device selecting the second location;
The navigation server obtaining map coordinates of the map coordinate system with respect to the selected second place;
The navigation server checking whether there is a first closed area associated with the first location, wherein the first closed area is implemented as a polygon and includes information about at least one first passageway to the first location; Each of the at least one first passages corresponds to an entrance, exit or entrance to the first location;
The navigation server checking whether there is a second closed area associated with the selected second place based on the obtained map coordinates, wherein the second closed area is implemented with a polygon and at least one second relative to the second place; Two passageways, wherein each of the at least one second passageways corresponds to an entrance, exit, or entrance to the second location;
The navigation server may include including a path to the first and / or second passage in the moving route based on the preference information if the first or second place is in the first or second closed area. Including path search method.

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