KR100940043B1 - Mobile terminal for supporting road guide service and method thereof - Google Patents

Abstract

Disclosed are a mobile terminal for providing a road guidance service and a method thereof. According to an embodiment of the present invention, a mobile terminal for providing a road guidance service may include a display unit configured to display location information of a user received through a global positioning system (GPS) receiver on a map, and whether the user is in a GPS shadow area. The user's location information is switched by switching between a GPS search mode for receiving the user's location information through a receiver and an image search mode for calculating the user's location information based on the image information input through the image input device. And a control unit for calculating, wherein the control unit activates the GPS search mode when the user is not within the GPS shadow area, and activates the image search mode when the user is within the GPS shadow area. Through this, the present invention provides an efficient road guidance service by switching between the GPS search mode and the video search mode, and can quickly switch between the GPS search mode and the video search mode through a tag installed in the GPS shadow area, Satisfaction can be improved.

Mobile terminal, directions service, GPS shadow area, tag, video navigation mode

Description

Mobile terminal for supporting road guidance service and method thereof

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile terminal, and more particularly, to provide an efficient road guidance service by switching between a GPS (Global Positioning System) search mode and an image search mode, and to provide a GPS search mode through a tag set for each GPS shadow area. The present invention relates to a mobile terminal and a method for providing a road guide service which can not only switch quickly between image search modes but also improve user satisfaction.

In general, a mobile terminal refers to any electronic device that can move freely within a service area formed by a base station and communicate by wireless call and wireless connection to the other party anytime and anywhere under the control of an exchange. By providing services, the service area is gradually expanding.

One such supplementary service may provide a road guidance service by mounting a GPS (Global Positioning System) receiver for locating a location in a mobile terminal. In particular, since the GPS receiver can be provided with latitude, longitude, and visual information through a dedicated satellite, the GPS receiver is already widely used, for example, in a vehicle requiring an accurate position.

The mobile terminal displays the current location on the displayed map based on the information received through the GPS receiver, calculates the shortest path from the displayed current location to the destination input by the user, and then provides a route guidance service according to the calculated shortest path. Could provide.

However, the use of a dedicated satellite as a means for acquiring the location information in order to provide a road guidance service using such a GPS receiver results in a GPS shadow area where the dedicated satellite is not visible, for example, in an underground space, a tunnel, or a large urban building. There was a problem that you do not know its location correctly or errors may occur.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems of the prior art, using a GPS receiver according to a GPS (Global Positioning System) search mode in a general area, and using an image input device according to an image search mode in a GPS shadowed area. The present invention provides a mobile terminal and a method for providing a road guide service for providing an efficient road guide service by identifying a location of a user.

Another object of the present invention is to set a tag that can indicate the beginning and end of the GPS shadow area on the displayed map, respectively, to move to provide a road guidance service that allows you to quickly switch between GPS search mode and video search mode A terminal and a method thereof are provided.

Another object of the present invention is to determine the exact location of the user by recognizing the image information input through the image input device even when entering the GPS shadow area through a quick switch between the GPS search mode and the image search mode, The present invention provides a mobile terminal and a method for providing a road guide service for improving a user's satisfaction by preventing a route re-search due to an error and a guidement error caused by the error.

In order to achieve the above object, a mobile terminal for providing a road guidance service according to an aspect of the present invention is a display unit for displaying the location information of the user received via a GPS (Global Positioning System) receiver on the map and the user To calculate the location information of the user based on the GPS search mode for receiving the location information of the user through the GPS receiver and the image information input through the image input device according to whether the GPS shadow is within a GPS shadow area. And a controller configured to calculate location information of the user through switching between image search modes, wherein the controller activates the GPS search mode when the user is not within a GPS shadowed area, and when the user is within the GPS shadowed area. The image search mode is activated.

In order to achieve the above object, a method for providing a road guidance service according to another aspect of the present invention is to activate the Global Positioning System (GPS) search mode to display the user's location information received through the GPS receiver on the map And the location of the user based on the GPS search mode for receiving the location information of the user through the GPS receiver and the image information input through the image input device according to whether the user is within a GPS shadow area. Calculating location information of the user by switching between image search modes for calculating information; activating the GPS search mode if the user is not within a GPS shadow area in calculating the location information of the user; Search for the image when the user is within the GPS shadow area. It is characterized by activating the mode.

Other objects and features of the present invention in addition to the above object will be apparent from the description of the embodiments with reference to the accompanying drawings.

In this way, the present invention uses the GPS receiver according to the GPS (Global Positioning System) search mode in the general area, and the image input device according to the image search mode in the GPS shadowed area to determine the location of the user, an efficient road guidance service There is an effect that can provide.

According to the present invention, since each tag is set to indicate the start and end of the GPS shadow area on the displayed map, it is possible to quickly switch between the GPS search mode and the image search mode.

In addition, the present invention, even when entering the GPS shadow area by switching between the GPS search mode and the image search mode, because it is possible to determine the exact location of the user by recognizing the image information input through the image input device, It is possible to prevent re-navigation of the route and guidance announcement errors, thereby improving user satisfaction.

Hereinafter, a system and a method for providing a road guide service of a mobile terminal according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 5.

The present invention proposes a method for efficiently providing a road guidance service even in a GPS shadow area. That is, the present invention provides a GPS search mode for determining a location using a GPS (Global Positioning System) receiver in a general area on a map, and a location for using a video input device in a GPS shadowed area where a GPS receiver cannot be used. It is possible to efficiently provide a road guidance service by switching between image search modes.

In order to quickly switch between the GPS search mode and the image search mode, the present invention may set a tag for distinguishing the start and the end of the GPS shadow area on the map, respectively.

1 is an exemplary view showing a configuration of a mobile terminal according to an embodiment of the present invention.

As shown in FIG. 1, the mobile terminal according to the present invention includes a transceiver 110, a display 120, an audio output 130, a controller 140, a memory 150, a GPS receiver 160, The image input unit 170 and the input unit 180 may be included.

The transceiver 110 may transmit / receive information for receiving various services such as a mobile communication service such as a voice call, a video call, a text message, and a wireless Internet.

The GPS (Global Positioning System) receiver 160 may receive location information of the user, for example, latitude and longitude and visual information, etc. from a dedicated satellite, and the display 120 may display it on a map. Accordingly, the audio output unit 130 may also output a separate warning sound according to the location of the user displayed on the map. For example, traffic information such as a rockfall warning section or an accident occurrence section, weather information, music information, etc. You can let them know.

The controller 140 may switch between the GPS search mode and the image search mode according to whether or not the location information of the user can be received from the dedicated satellite. That is, the controller 140 may activate the GPS search mode in the general area on the moving path and receive the location information of the user through the GPS receiver 160 and provide it to the display 120.

In this case, the memory 150 provides map information for providing such a road guidance service. In particular, among the map information, a tag for distinguishing a GPS shadowed area, for example, a start tag indicating a start of a GPS shadowed area and an end thereof may be provided. An end tag indicating and various image information corresponding to the GPS shadow area may be stored. Such a tag may also be added as an attribute of the link data of the map.

To this end, it is necessary to build a DB (database) by simultaneously receiving image information and location information while moving a GPS shadow area using a vehicle equipped with an image input device and a high performance GPS receiver. Such image information and location information may be mapped on a map.

In addition, the controller 140 activates the image search mode in the GPS region of the moving path, and accordingly drives the image input device to receive the image information of the GPS shadow area through the image input unit 170 and thereby the user's position. Information may be calculated and provided to the display 120.

The user may select the road guidance service or various functions corresponding thereto through the input unit 180.

In this case, the mobile terminal may be a concept including a mobile terminal, a mobile terminal, a mobile phone, a PDA (Personal Digital Assistants) and a laptop, which may be provided with a GPS receiver to provide a road guidance service or a navigation function.

As described above, the present invention can set the GPS search mode and the video search mode as a method for determining the location information of the user, in order to quickly perform the mode switching without unnecessary computation when the user enters the GPS shadow area. to be.

2 is an exemplary view showing a method for providing a road guidance service according to an embodiment of the present invention.

As shown in FIG. 2, first, a user may select a route guidance service through a menu or a key selection (S201), and input destination information, for example, a place name, an address, a telephone number, etc., to which he / she wants to go (S202). ). The mobile terminal may receive the user's location information at the present time from the dedicated satellite through the GPS receiver (S203), and may set an optimal moving path to the destination based on the GPS receiver (S204).

In this case, it is assumed that there is at least one GPS shadow area on the moving path.

When the user starts to move along the moving path, the mobile terminal may activate a GPS search mode for searching for the location information of the user through the GPS receiver (S205).

Then, since a tag for distinguishing the GPS shadow area, for example, a start tag for notifying the start of the GPS shadow area and an end tag for notifying the end of the GPS shadow area are set in advance, the mobile terminal receives the received location information of the user. On the basis of whether or not the user has entered the GPS shadow area, that is, whether the start tag is detected periodically, it may be periodically checked (S206).

When the user enters the GPS shadow area, the mobile terminal may deactivate the GPS search mode and activate the video search mode (S207). The operation principle of the GPS search mode and the video search mode will be described with reference to FIGS. It demonstrates in detail with reference.

3 is an exemplary diagram illustrating a detailed method of activating the GPS search mode shown in FIG. 2.

As shown in FIG. 3, when the GPS navigation mode is activated, the mobile terminal can continuously or periodically receive the user's location information through the GPS receiver (S301), and based on the received location information of the user, By displaying the user's location in accordance with the movement path on the map with a symbol (S302), it can be easily recognized by the user.

The mobile terminal can check whether the user has arrived at the destination based on the received location information of the user (S303). That is, the mobile terminal may terminate the road guidance service when the user arrives at the destination, and continuously receive the user's location information from the GPS receiver according to the GPS search mode if the user does not arrive at the destination.

4 is an exemplary diagram illustrating a detailed method of activating the image search mode illustrated in FIG. 2.

As shown in FIG. 4, when the image search mode is activated, the mobile terminal may drive the image input apparatus (S401), and may receive image information through the driven image input apparatus (S402). For example, the image input device may be a camera mounted in the mobile terminal or a camera that can be detachably connected to the mobile terminal.

At this time, the camera that can be detachably connected to the mobile terminal as the image input device is mounted on the outside of the vehicle can be connected via a cable such as RS-232C or wirelessly communicate such as Bluetooth.

In addition, the image input apparatus may collect image information by adjusting the same angle or a predetermined angle in a horizontal direction or a vertical direction based on a path that the user moves, and the image information may mean a video or a still image. .

The mobile terminal receives the image information from the image input apparatus and checks whether there is previously stored image information identical to the received image information through the memory (S403).

For example, a method of comparing a contour of an object or a building located near a road may be used. The mobile terminal compares the contour of a building located near a road in a received image information with a contour of a building in previously stored image information. According to the comparison result, it is possible to check whether there is already stored image information identical to the input image information.

In this case, the present invention may limit the outline of an object or a building to one object or building, but may be applied to two or more objects or buildings so that the features of the outline may be clear.

In addition, the present invention may compare the outline of an object or a building to determine whether the image information is the same, but is not limited thereto. Various methods for recognizing or determining the same thing or the object in the image information may be provided. May be applied.

Subsequently, if there is already stored image information identical to the received image information, the mobile terminal may calculate the location information of the user based on the received image information (S404), which will be described with reference to Table 1 below.

TABLE 1

section Objects or buildings Latitude, longitude Gangnam Station-Samsung Station A 127.33.21, 35.23.52 Gangnam Station-Samsung Station B 127.33.21, 35.23.53 Gangnam Station-Samsung Station C 127.33.21, 35.23.54

As shown in Table 1, assuming that the section from Gangnam Station to Samsung Station is a GPS shadowed area, the latitude and longitude are measured and stored in advance based on the contours of objects or buildings A, B, and C having a specific shape on the section. You can do it.

Therefore, since the mobile terminal can check the contour of the object or building in the image information received through the image input device and search for the image information corresponding thereto, the latitude and longitude corresponding thereto can be known. Can be calculated.

Thus, the mobile terminal can display the calculated user's location information on the map (S405). The mobile terminal can check whether the user has arrived at the destination based on the calculated location information of the user (S406). That is, when the user arrives at the destination, the mobile terminal may terminate the road guidance service. If the user does not arrive at the destination, the mobile terminal may continuously receive the image information from the image input device according to the image search mode.

On the other hand, the mobile terminal should receive the image information from the image input device and store the image information of all GPS shadow areas in memory in advance in order to check whether there is the same previously stored image information, which is too large. In addition, as the GPS shadow area changes, corresponding video information may need to be updated every time.

In order to solve this problem, the present invention proposes a method of calculating a user's location information through a separate video server, which will be described with reference to FIG. 5.

5 is an exemplary view for explaining a principle of calculating location information according to an embodiment of the present invention.

As illustrated in FIG. 5, when the mobile terminal 510 receives the image information from the image input device, the mobile terminal 510 may transmit the received image information to a separate image server 520 through the wireless Internet.

The image server 520 may check whether there is previously stored image information identical to the transmitted image information through the database 521. That is, if there is already stored image information identical to the transmitted image information, the image server 520 may calculate the location information of the user based on the same.

At this time, the database 521 stores and manages the image information of the GPS shadowed area, and can be systematically stored by dividing by region or by moving image or still image.

Accordingly, the image server 520 may transmit the calculated location information of the user to the mobile terminal.

Thereafter, the mobile terminal can check whether the user has left the GPS shadow area, that is, the end tag is detected, based on the calculated location information of the user (S208). That is, when the user leaves the GPS shadow area, the mobile terminal may deactivate the image search mode and activate the GPS search mode to continuously receive the user's location information through the GPS receiver.

On the other hand, if the user does not leave the GPS shadow area, the mobile terminal may continuously receive the image information from the image input device, calculate the location information of the user and display it on the map. Such a road guidance service will be described with reference to FIG. 6.

6 is an exemplary view for explaining a road guidance service according to an embodiment of the present invention.

As shown in FIG. 6, the mobile terminal displays a moving path to be moved by the user on a displayed map as a thick line, for example, and displays the user's location 640 according to the user's location information received through the GPS receiver. Can be displayed.

In addition, the mobile terminal displays the GPS shaded area 610 as a hatched area so that it can be distinguished if it exists, and to distinguish the start tag 620 and the end point for distinguishing the starting point of the GPS shaded area. Each end tag 630 may be displayed.

As described above, the present invention provides a road guidance service using a GPS signal in an area where a GPS signal is well received, and compares image information in a region where the GPS signal is not easily detected, thereby grasping a user's location, thereby providing a GPS having high buildings. Stable road guidance services can be provided in the shadow area.

According to the present invention, a mobile terminal for providing a road guide service and a method thereof may be modified and applied in various forms within the scope of the technical idea of the present invention, and the present invention is not limited to the above embodiments. In addition, the embodiments and drawings are merely for the purpose of describing the contents of the invention in detail, not intended to limit the scope of the technical idea of the invention, the present invention described above is common knowledge in the technical field to which the present invention belongs As those skilled in the art can have various substitutions, modifications, and changes without departing from the technical spirit of the present invention, it is not limited to the above embodiments and the accompanying drawings, of course, and not only the claims to be described below but also claims Judgment should be made including scope and equivalence.

1 is an exemplary view showing a configuration of a mobile terminal according to an embodiment of the present invention.

2 is an exemplary view showing a method for providing a road guidance service according to an embodiment of the present invention.

3 is an exemplary diagram illustrating a detailed method of activating the GPS search mode shown in FIG. 2.

4 is an exemplary diagram illustrating a detailed method of activating the image search mode illustrated in FIG. 2.

5 is an exemplary view for explaining a principle of calculating location information according to an embodiment of the present invention.

6 is an exemplary view for explaining a road guidance service according to an embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

110: transceiver

120: display unit

130: audio output unit

140: control unit

150: memory

160: GPS receiver

170: image input unit

180: input unit

510: mobile terminal

520: video server

521: database

Claims (15)

A display unit configured to display location information of a user received through a GPS (Global Positioning System) receiver on a map; And The location information of the user is calculated based on the GPS search mode for receiving the location information of the user through the GPS receiver and the image information input through the image input device according to whether the user is in a GPS shadowed area. Control unit for calculating the location information of the user by switching between the image search mode for And the control unit activates the GPS search mode if the user is not within the GPS shadow area and activates the image search mode when the user is within the GPS shadow area. For mobile terminals. According to claim 1, The control unit, Determining whether the user enters the GPS shadow area based on location information of the user received through a tag set at a start point and an end point of the GPS shadow area in the map, When the user enters the GPS shadowed area, the image input device is driven and the location information of the user is calculated based on the received image information. terminal. The method of claim 2, The control unit, And checking whether there is previously stored image information identical to the input image information, and calculating location information of the user and providing the location information to the display unit. The method of claim 2, The control unit, The mobile terminal for providing a road guidance service, characterized in that when the user has moved away from the GPS shadowed area, the image input device stops driving and receives the location information of the user through the GPS receiver. delete The method according to claim 1 or 2, The video input device, A mobile terminal for providing a road guidance service, characterized in that any one of a camera mounted in the mobile terminal and a camera that can be detachably connected to the mobile terminal. The method according to claim 1 or 2, The control unit, When the user enters the GPS shadow area, the image input device is driven to receive the image information through the image input device. And transmitting the image information to an image server and receiving the location information of the user calculated from the image server in response thereto. Displaying location information of a user received through a global positioning system (GPS) receiver on a map; And The location information of the user is calculated based on the GPS search mode for receiving the location information of the user through the GPS receiver and the image information input through the image input device according to whether the user is in a GPS shadowed area. Calculating location information of the user by switching between image search modes And activating the GPS search mode if the user is not within the GPS shadow area and calculating the location information of the user, and activating the image search mode if the user is within the GPS shadow area. Method for providing a road guidance service of the mobile terminal. The method of claim 8, Displaying the location information of the user on a map, Activating the GPS navigation mode according to the setting of the movement route; Receiving location information of a user through a GPS receiver according to activation of the GPS search mode; And And displaying the received location information of the user on the map. The method of claim 8 or 9, Computing location information of the user, Confirming whether the user enters the GPS shadow area based on the received location information of the user; When the user enters the GPS shadow area, deactivating the GPS search mode and activating the image search mode; Receiving image information from the image input device according to activation of the image search mode; Checking whether there is previously stored video information identical to the received video information; And And calculating the location information of the user based on the result of the confirmation. The method of claim 10, Checking whether the GPS shadow area has been entered, Determining whether the user enters into a start tag for notifying the start of the GPS shadow area set on the map based on the received location information of the user. Way. The method of claim 10, The step of confirming the existence of the same pre-stored image information, Comparing the contour of the building in the input image information with the contour of the building in the previously stored image information; And And checking whether there is previously stored video information identical to the received video information according to a result of the comparison. The method of claim 10, Displaying the calculated location information of the user on the map; And And after the display, checking whether the user has left the GPS shadow area. The method of claim 13, Determining whether the deviation from the GPS shadow area, Determining whether the user has exited the end tag notifying the end of the GPS shadow area set on the map based on the calculated location information of the user. How to. The method of claim 8 or 9, Computing location information of the user, Confirming whether the user enters the GPS shadow area based on the received location information of the user; When the user enters the GPS shadow area, deactivating the GPS search mode and activating the image search mode; Receiving image information from the image input device according to activation of the image search mode; Transmitting the image information to an image server; And And receiving the location information of the user calculated from the video server in response thereto.

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