KR101079932B1 - Method for Providing Map Information on Mobile Network Environment, and Map Information Providing Server and Communication Terminal thereof - Google Patents

Abstract

The present invention provides a wireless network for storing background map data of an electronic map in a mobile communication terminal, receiving POI information including contents of a map service through a wireless network, and matching and displaying the background map data on a background map. Provides a method and system for providing map information in, and a map information server and communication terminal to which the method is applied.

To this end, the present invention provides a POI corresponding to a background map and a specific service of a specific region while the communication terminal stores POI list information on background map data and previously downloaded point of interest (POI) information in a memory. Transmitting the POI request information for receiving the transmission together with the POI list information to the map information server; Extracting, by the map information server, only POI information that is not duplicated through comparison with POI list information among POIs corresponding to the POI request information transmitted from the communication terminal and transmitting the same to the communication terminal; And matching the POI information provided from the map information server or pre-downloaded with the background map of the specific area drawn from the memory in the communication terminal to display on the screen.

Description

A method for providing map information in a wireless network, and a map information server and a communication terminal to which the method is applied {Method for Providing Map Information on Mobile Network Environment, and Map Information Providing Server and Communication Terminal}

The present invention relates to a method for providing map information to a communication terminal in a wireless network, and more particularly, to reduce data download time by classifying and providing data according to an electronic map service of a communication terminal in a terminal and a terminal. In addition, the present invention relates to a method of providing map information to a communication terminal in a wireless network which can reduce memory space of the terminal, and a map information server and a communication terminal to which the method is applied.

In general, an electronic map service provided to a communication terminal through a wireless network provides a user by downloading an electronic map as an image in a wireless communication section and providing the user with the location of a counterpart terminal, providing geographic information around the user terminal, and user designation. It is used for finding major spots, navigation functions for vehicles and pedestrians, providing congested traffic information, providing public transportation routes and arrival information.

The electronic map service is a dedicated server for operating an electronic map, and after the GIS server matches and combines points of interest (POI) information as map service contents related to the location with an electronic map around a specific location, the POI is connected through a wireless network. There is a method of transmitting the electronic map data including the information to the mobile communication terminal by the downlink wireless communication. According to this method, the mobile communication terminal simply downloads the electronic map data combined with the POI information from the GIS server through the wireless network and performs a function of simply displaying the image in the form of an image. However, in the electronic map service that downloads and displays the electronic map data combined with the POI information, since both the electronic map data and the POI information are downloaded, the amount of downlink wireless communication data is large. There is a problem in that the electronic map service cannot be performed, traffic occupancy is excessively increased due to long time network use, and data communication fees are inevitably increased. Moreover, when the electronic map data is composed of images, there is a problem that the download time of the data is inevitably longer because the data size of the image is large.

On the contrary, after the POI information, which is the contents of the electronic map and the map service, is stored in the memory of the mobile communication terminal, various electronic map services are provided using the POI information stored in the memory. Since the data volume of the content to be downloaded through the wireless network is not large, there is an advantage that the data communication fee can be reduced without excessive network occupancy. However, in the case of storing and using the electronic map and the POI information in the memory of the terminal, since the POI information must be stored in the memory of the mobile communication terminal together with the electronic map as a large amount of contents for each service, sufficient memory space is provided. If the data needs to be secured and data needs to be updated at regular intervals, there is a problem that the data size of the electronic map and POI information to be updated is too large. In addition, in order to avoid downloading data for a long time through a wireless network during the update, it is inevitable to connect a mobile communication terminal with a desktop computer terminal using a wired cable, and to perform an update using a wired communication.

In order to solve such a problem, a method of previously storing only background map data among map data in a mobile communication terminal, and downloading POI data, road map data and route search map data from a map information providing center has been proposed. However, even in this method, there is a problem in that traffic of the network may be wasted because the POI data already stored in the mobile communication terminal is repeatedly downloaded.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and stores background map data of an electronic map in a communication terminal and receives POI information including wireless content of a map service through a wireless network. It is an object of the present invention to provide a method of providing map information in a wireless network such that POI information already stored in a communication terminal is not downloaded redundantly, a communication terminal and a map information server to which the method is applied.

In order to achieve the above object, a method of providing map information in a wireless network according to an aspect of the present invention includes a POI list information on a background map data and point of interest (POI) information previously downloaded by a communication terminal in a memory. A first step of transmitting, with the POI list information, POI request information for receiving a background map of a specific area and a POI corresponding to a specific service in a stored state; A second step of the map information server fetching only POI information which is not duplicated through comparison with the POI list information among POIs corresponding to the POI request information transmitted from the communication terminal and transmitting the same to the communication terminal; And a third step of matching POI information provided from the map information server or pre-downloaded with the background map of the specific area drawn out from the memory by the communication terminal and displaying it on the screen.

In order to achieve the above object, a communication terminal having map information according to an aspect of the present invention records a list of background map data, previously downloaded partial point of interest (POI) information, and partial POI information. A memory for storing POI list information; A POI request unit for transmitting POI request information for receiving background map of a specific region and POI information corresponding to a specific service to a map information server together with the POI list information; A POI receiver configured to receive POI information from the map information server and store the POI information in the memory; And an electronic map display unit which is provided from the map information server or downloaded in advance on a background map of a specific region drawn out from the memory and matches the POI information stored in the memory and displays the screen.

In order to achieve the above object, a map information server for providing POI information to a communication terminal in which POI information according to an electronic map service according to an aspect of the present invention is partially stored and first POI list information of corresponding POI information is stored is A POI list generation unit for generating second POI list information on POI information provided to the communication terminal according to POI request information from the communication terminal; A POI comparison unit for comparing the first POI list information and the second POI list information received together with the POI request information from the communication terminal; And a map information controller configured to control to transmit the POI and the second POI list information extracted through the POI comparator to the communication terminal.

According to another aspect of the present invention, there is provided a method of providing map information in a wireless network, the communication terminal corresponding to a background map and a specific service of a specific area in a state where background map data is stored in a memory. A first step of transmitting POI request information for receiving POI information to a map information server; The map information server stores a list of POI information previously downloaded for each communication terminal in a database, and is not duplicated through comparison with a corresponding POI list among POI information corresponding to POI request information transmitted from the communication terminal. Extracting only POI information and transmitting it to the communication terminal; And a third step of matching POI information provided from the map information server or pre-downloaded with the background map of the specific area drawn out from the memory by the communication terminal and displaying it on the screen.

In order to achieve the above object, a communication terminal having map information according to an aspect of the present invention includes a memory for storing background map data and some point of interest (POI) information previously downloaded; A POI request unit for transmitting POI request information for receiving a background map of a specific region and POI information corresponding to a specific service to a map information server; A POI receiver configured to receive POI information from the map information server and store the POI information in the memory; And matching the POI information provided from the map information server or downloaded in advance to the background map of the specific area drawn from the memory based on the second POI list information received from the map information server and displayed on the screen. It is configured to include; electronic map display unit.

In order to achieve the above object, a map information server that provides POI information to a communication terminal in which some POI information according to an electronic map service according to an aspect of the present invention is stored has a list of POI information previously downloaded for each communication terminal. POI list database that is stored and stored; A POI list generating unit for generating second POI list information on POI information provided to the communication terminal according to the POI request information from the communication terminal; A POI comparison unit comparing the POI list corresponding to the communication terminal with the second POI list information; And controlling to transmit the POI information and the second POI list information extracted through the POI comparison unit to the communication terminal, and the POI list of the corresponding communication terminal in the POI storage list database for the POI information transmitted to the communication terminal. It is configured to include; map information control unit for controlling to update.

According to the present invention, it is possible to significantly reduce the download time of the map configuration data required for the display of the electronic map to facilitate the smooth execution of the electronic map service, and to reduce the network traffic share and reduce the wireless communication fee It is possible to reduce the memory space of the mobile communication terminal.

In addition, when the mobile communication terminal wants to change the scale according to the enlargement, reduction, up / down movement, left / right movement, etc. of the map, the scale adjustment of the background map and the POI information are adjusted according to the conversion scale of the map. By matching to the drawing, the inconvenience of having to download the map image of the changed scale every time when the scale of the conventional map is changed can be eliminated, so that the scale conversion representation of the map can be more intuitively and quickly. Since it is unnecessary to download additional data according to the conversion, it is possible to reduce the wireless communication fee due to the network use.

Hereinafter, the present invention configured as described above will be described in detail with reference to the accompanying drawings.

In the present invention, a communication terminal capable of receiving an electronic map service through a network, comprising: a mobile communication terminal capable of two-way wireless data communication, a personal digital assistant (PDA) and a smart phone capable of wireless data communication; Wireless mobile terminals such as smart phones, UMPCs, and the like, and wireless communication terminals such as desktop computer terminals, notebook computer terminals, and netbooks capable of wireless data communication may be applied. However, for convenience of description, in the following description, the communication terminal in the present invention will be described as an example of a mobile communication terminal capable of two-way wireless data communication.

<First Embodiment>

1 is a diagram showing the overall configuration of a system for providing map information in a wireless network according to a first embodiment of the present invention. As shown in FIG. 1, a first embodiment of a map information providing system in a wireless network according to the present invention includes a mobile communication terminal 10, a wireless network, a map information server 12, and a POI information server 14. And a POI information database 16.

The mobile communication terminal 10 stores only the background map among the components of the entire electronic map in a memory space, requests POI information with service contents for each service item of the electronic map service for a specific region through a wireless network, and provides the POI information. The server 14 receives POI information of the corresponding service from the server 14 and displays it on the background map.

Here, the mobile communication terminal 10 separately stores POI information previously requested and provided, and generates list information (first POI list information or meta information) for the separately stored POI information. Therefore, the mobile communication terminal 10 transmits the first POI list information to the map information server 12 through the wireless network at the time of POI request for each service item in a specific region, thereby checking whether the requested POI information is duplicated. To be possible.

In the present invention, a wireless network is used as a concept including both a wireless signaling network such as a mobile communication network and a wireless digital data network such as an IMS (IP Multimedia Subsystem) network or an Internet network.

The map information server 12 receives POI information for a specific service item of a specific region from the mobile communication terminal 10 through a wireless network, and the POI information server 14 requests POI information desired by the mobile communication terminal 10. Control to provide.

When the map information server 12 according to the first embodiment of the present invention requests the POI information from the mobile communication terminal 10, the map information server 12 receives the request of the list information (first POI list information) of the POI stored in the mobile communication terminal. Check whether the downloaded POI information is included in the first POI list information to check whether the data is duplicated, and only the non-duplicate POI information among the requested POI information is received from the POI information server 14 by the mobile communication terminal 10. To be provided.

The POI information server 14 provides the mobile communication terminal 10 with POI information including service content for various kinds of service items that can be provided through the electronic map service, and the POI from the map information server 12. According to the request for providing the information, the POI information is extracted from the POI information database 16 and transmitted to the mobile communication terminal 10.

The POI information database 16 stores POI information for various types of service items of the electronic map service.

Here, the various types of service items that can be provided by the electronic map service include a location search function of a counterpart terminal, a geographic information providing function around a user terminal, a key point search function specified by a user, and a navigation function for vehicles and pedestrians. At least one of the above may be included in a congested traffic information providing function, a public transportation route providing function, and an arrival information providing function.

The POI information stored in the POI information database 16 includes service contents having characteristics of each service item of the electronic map service, and has latitude, longitude, and altitude location coordinate values for each service content in the information. Each service content includes individual property information such as one or more of color, shape, size, width, location on the map, event information, sound effect, and event response information, and each property information is composed of text data. It is.

2 is a diagram illustrating a functional configuration of the mobile communication terminal 10 having map information according to the first embodiment of the present invention. As shown in FIG. 2, the mobile communication terminal 10 includes a memory 20, a POI request unit 22, a POI receiver 24, an electronic map display unit 26, and a display state conversion unit 28. It is composed. Of course, the mobile communication terminal 10 according to the first embodiment of the present invention also has a key input unit, a microprocessor, a digital signal processing unit, a display unit, a speaker, a communication signal processing unit, a communication signal transmission unit, and a transmitter, like a general mobile communication terminal. , Hardware components such as a receiver, etc., but a description of general functional operations that are not helpful in understanding the present invention will be omitted. On the other hand, the functionally expressed POI request unit 22, POI receiving unit 24, electronic map display unit 26 and display state conversion unit 28, respectively, and software corresponding to the various hardware constituting the mobile communication terminal 10 It is composed by the combination of

The memory 20 includes programs constituting the POI request unit 22, the POI receiving unit 24, the electronic map display unit 26, and the display state converting unit 28, and various system programs and applications. The data is stored.

In addition, as shown in FIG. 4, the memory 20 stores background map data of the whole country, and the background map data is divided into a plurality of partition blocks M1 to Mn partitioned according to a rule for determining a boundary of each region. It consists of the form of divided vector data. Each partition block M1 to Mn includes a plurality of scale-specific background map data m1 to mn in which 1 / n to n / n scales are formed in multiple stages. Here, the background map data includes basic background data constituting the map, such as the existence and width of roads, mountains and plains, rivers and seas, pictures of major buildings, and main piers.

In addition, the memory 20 stores some of the POI information downloaded from the map information server 12 by POI request information for receiving a background map of a specific region and POI information corresponding to a specific service. POI list information (first POI list information) in which the stored data items are listed. On the other hand, the memory capacity for storing the POI information needs to be allocated not too large in consideration of the memory capacity limit of the mobile communication terminal 10. Accordingly, if the space of the memory 20 for storing the POI information is insufficient as the POI information is continuously downloaded and stored, the POI information may be deleted and the latest POI information may be stored. Manage to update the stored data item of the list information (first POI list information). The POI list information includes identification number and / or version information of each POI information.

The POI request unit 22 transmits the POI request information for receiving the background map of the specific area and the POI information corresponding to the specific service to the map information server 12 along with the first POI list information through the wireless network. POI request information includes location information of a specific area to be searched (for example, the current location of a mobile communication terminal, other location that the user wants to search, or a departure point / destination destination in a navigation function for a traffic service), and a specific service. Item information (for example, search item information for each service item) and range information (information about a range including POI information based on location information, for example, scale) are included.

The POI receiver 24 receives the POI information and the second POI list information (to be described later) from the map information server 12, and stores the received POI information in the memory 20.

The electronic map display unit 26 is provided from the map information server 12 or downloaded in advance based on the second POI list information provided from the map information server 12 on the background map of the specific area drawn out from the memory 20. POI information stored in (20) is matched and displayed on the screen. The electronic map display unit 26 is implemented by an electronic map browser program supported by the electronic map processing engine program described below.

The display state converting unit 28 switches the display state of the electronic map combined with the background map displayed on the screen and the POI information by any one of enlargement, reduction, vertical movement, and horizontal movement by a user's key operation. The display state converting unit 28 includes a background map drawing unit 30, a POI scale adjusting unit 32, and a POI display unit 34. The background map extractor 30 is implemented by an electronic map browser program, and the POI scale adjustment unit 32 and the POI display unit 34 are implemented by an electronic map processing engine program.

When the display change of the electronic map displayed on the screen is selected by the user's key manipulation, the background map extractor 30 extracts the scaled background map according to the display change from the multi-scale scale background map stored in the memory 20. .

The POI scale adjustment unit 32 calculates the scale according to the display switching, and adjusts the scale for each service content of the POI information according to the calculated scale.

The POI display unit 34 draws and displays the background map of the scale according to the display change and the POI information whose scale is adjusted according to the position coordinate value of the converted scale.

3 is a diagram showing the detailed configuration of the map information server 12 according to the first embodiment of the present invention. As shown in FIG. 3, the map information server 12 according to the first embodiment of the present invention includes a communication processing unit 40, a POI list generating unit 42, a POI comparison unit 44, and a map information control unit. And a POI information requesting unit 48.

The communication processor 40 performs communication for providing POI information according to the map information service with the mobile communication terminal 10 through a wireless network.

The POI list generating unit 42 may include location information of a specific area to be searched (eg, the current location of the mobile communication terminal or other items that the user wants to search) included in the POI request information provided from the mobile communication terminal 10. Information about the range including POI information based on location information, specific service item information (e.g., search term information for each service item), and range information (e.g., departure point / destination in navigation function for location or traffic guidance service) For example, with reference to the basic information about the POI information provided by the POI information server 14 and the POI list information (one or more) for one or more POI information to be displayed and transmitted to the mobile communication terminal 10 POI list information) is generated. The second POI list information is composed of meta data including identification number and / or version information of the corresponding POI information and is generally smaller than the size of the POI information. When the range information included in the POI request information is a scale, a range of a region corresponding to the scale may be determined. If the scale is not included in the POI request information, a predetermined default scale value may be used.

The POI comparison unit 44 receives the first POI list information provided together with the POI request information received from the mobile communication terminal 10 through the communication processor 40 and the second POI list information generated from the POI list generator 42. Compare to to determine whether the POI information to be displayed on the mobile communication terminal 10 is already stored in the mobile communication terminal (10). This can be done by comparing the identifier and / or version information of the POI information.

The POI information request unit 48 requests POI information server 14 to provide POI information to be provided to the mobile communication terminal 10 and receives the requested POI information.

The map information controller 46 receives the POI information determined to be non-duplicate from the POI information server 14 through the POI information request unit 48 according to the POI duplication check result from the POI comparison unit 44. , The second POI list information generated by the POI list generator 42 is packaged with the POI information and provided to the mobile communication terminal 10.

Hereinafter, the matching display operation of the background map and the POI information through the electronic map browser and the electronic map processing engine will be described with reference to FIG. 5.

Here, the electronic map processing engine 52 generally performs arithmetic processing of data for matching display of the background map and POI information, and the electronic map browser 50 outputs the data calculation result of the electronic map processing engine 52. It provides a screen implementation of the map data and POI information, and provides an interface for operating the user navigation, provides a menu interface for each specific map service, implements various map service related scenarios, and provides user information.

As shown in FIG. 5, the electronic map browser 50 extracts the background map data of a specific scale from the background map data m1 to mn of the multi-level scale included in the partition block of the specific region in the memory 20. Display on the screen.

In the screen display state of the background map data, the electronic map browser 50 selects POI information for the designated service item according to the specified service item from among a plurality of service items applicable to the region. Download from 12). Subsequently, in accordance with a data operation for map information matching processing of the electronic map processing engine 52, the electronic map browser 50 performs individual attribute information of the POI information (ie, color, shape, size, width, location value on a map, etc.). Based on this, the location coordinate values (latitude, longitude, altitude) of each service content are matched with the location coordinate values of each scale on the background map and displayed on the screen.

For example, when the service item requesting POI information for a specific area is a congestion traffic information inquiry service, the background map data of the area is first displayed on the screen through the electronic map browser 50, and then the map information server 12 POI information indicating the congestion degree for each section of the target road is downloaded, and according to the data operation processing of the electronic map processing engine 52, the position coordinate value for each scale on the background map and the coordinate value for each congestion section of the downloaded POI information To match each other so that they can be displayed on the screen.

That is, in the electronic map browser 50, as shown in FIG. 6, the specific service on the corresponding background map downloaded from the map information server 12 on the scaled background map data of the specific area drawn out from the memory 20. By matching and combining the POI information for the item, the electronic map data of the completed form in which the map content data of the specific service item is represented on the map can be displayed on the screen.

On the other hand, when there is a user input to switch the display state of the map by enlarging, reducing or moving the electronic map displayed on the screen up, down, left and right, the electronic map browser 50 as shown in FIG. Background map data of the converted scale is extracted from the background map data m1 to mn of the multi-level scale included in the specific partition block (20). The electronic map processing engine 52 adjusts the scale of the POI information displayed on the map according to the converted scale. First, the scale to be displayed and converted is calculated, and the POI information is calculated according to the calculated scale. A position operation is performed to adjust the scale of each POI based on the individual attribute information provided for each map content of. Further, the electronic map processing engine 52 matches the scaled background map and the POI information according to the position coordinate values (latitude, longitude, altitude), and then draws the scaled POI information on the background map ( Drawing). Accordingly, the electronic map data in which the enlarged display or the reduced display, the vertical movement display or the horizontal movement display can be displayed on the screen according to the display change input of the map.

Hereinafter, an operation process of the first embodiment of the present invention will be described in detail with reference to FIG. 8.

First, the mobile communication terminal 10 executes the electronic map browser 50 of the memory 20 according to the electronic map service execution input by the user's key button operation (step S10), and the electronic map browser 50 The background map data of the specific area desired by the user is extracted from the background map data for each block in the memory 20 by position calculation and displayed on the screen (step S11).

In this state, the mobile communication terminal 10 according to the user's key button operation, POI information of a specific service item to be displayed on a map for a specific region (for example, main buildings, financial institutions, restaurants, etc. distributed in the specific region). Information such as information) or a POI information search word of a specific service item through a menu, and location information of a specific region to be searched (for example, the current location of a mobile terminal or Other locations to search for, such as departure point / destination in the navigation function for the navigation service, specific service item information (for example, search term information for each service item), and range information (POI information based on location information) are included. POI request information including, for example, a scale) may be included in the POI information stored in the mobile communication terminal 10. It transmits a stored map information server 12 through the wireless network with claim 1 POI list information data item list screen (step S13).

The POI list generating unit 42 of the map information server 12 includes location information, specific service item information, range information, and POI information server of a specific region to be searched included in the POI request information provided from the mobile communication terminal 10. POI list information (second POI list information) for one or more POI information to be displayed and transmitted to the mobile communication terminal 10 is generated with reference to the basic information on the POI information provided by (14) (step S14). When the range information included in the POI request information is a scale, a range of a region corresponding to the scale may be determined. If the scale is not included in the POI request information, a predetermined default scale value may be used.

The POI comparison unit 44 of the map information server 12 receives the first POI list information and the POI list generation unit 42 provided together when the POI request information is received from the mobile communication terminal 10 through the communication processing unit 40. The generated second POI list information is compared to determine whether the POI information to be displayed on the mobile communication terminal 10 is already stored in the mobile communication terminal 10 (step S15).

The map information controller 46 of the map information server 12 checks whether the POI information to be displayed on the mobile communication terminal 10 is already stored in the terminal through the POI comparator 42, and all the POI information is stored in the terminal. If it is determined that the control unit is to transmit only the second POI list information to the mobile communication terminal 10, and if it is determined that some of the duplicate data is included in the POI information server 14 except for the duplicate POI information except for the duplicate POI information On the other hand, if it is determined that all the POI information is not duplicated, all the POI information is requested to the POI information server 14 (step S16).

Accordingly, the POI information server 14 extracts the POI information requested through the map information server 12 from the POI information database 16 and transmits it to the map information server 12 (step S17). The map information controller 46 of FIG. 12 packages the second POI list information generated by the POI list generator 42 and the POI information received from the POI information server 14 and transmits the same to the mobile communication terminal 10. (Step S18).

When the mobile communication terminal 10 receives the POI information from the map information server 12, the mobile communication terminal 10 stores the POI information in the memory 20, and withdraws the POI information from the memory 20 with reference to the received second POI list information. Each service content of the POI information is displayed on the background map (step S19).

Meanwhile, the mobile communication terminal 10 updates the first POI list information stored in the memory 20 as new POI information received from the map information server 12 is stored in the memory 20 (step S20). .

Second Embodiment

9 is a diagram showing the overall configuration of a map information providing system in a wireless network according to a second embodiment of the present invention. As shown in FIG. 9, a second embodiment of a system for providing map information in a wireless network according to the present invention includes a mobile communication terminal 110, a wireless network, a map information server 112, and a POI information server 114. And a POI information database 116.

The mobile communication terminal 110 stores only the background map among the components of the entire electronic map in a memory space, requests POI information with service contents for each service item of the electronic map service for a specific region through a wireless network, and provides the POI information. The server 14 receives POI information of the corresponding service from the server 14 and displays it on the background map.

Here, the mobile communication terminal 110 separately stores the POI information previously requested and provided.

In the present invention, a wireless network is used as a concept including both a wireless signaling network such as a mobile communication network and a wireless digital data network such as an IMS (IP Multimedia Subsystem) network or an Internet network.

The map information server 112 receives a request for POI information for a specific service item of a specific region from the mobile communication terminal 110 through a wireless network, and the POI information server 114 requests the POI desired by the mobile communication terminal 110. Control to provide information.

The map information server 112 according to the second embodiment of the present invention stores a database of stored lists of POI information for each terminal for all mobile communication terminals capable of receiving an electronic map service through a wireless network. The map information server 112 according to the second embodiment of the present invention determines whether the requested POI information is included in the storage list of the database POI information when the POI information is requested from the mobile communication terminal 110 and the data. It is checked whether the download of the duplicate, and only the non-duplicate POI information of the requested POI information can be provided from the POI information server 114 to the mobile communication terminal (110).

The POI information server 114 provides the POI information including the service content for each kind of service item that can be provided through the electronic map service to the mobile communication terminal 110, and the POI from the map information server 112. According to the request for providing the information, the POI information is extracted from the POI information database 116 and transmitted to the mobile communication terminal 110.

The POI information database 116 stores POI information for various types of service items of the electronic map service.

Here, the various types of service items that can be provided by the electronic map service include a location search function of a counterpart terminal, a geographic information providing function around a user terminal, a key point search function specified by a user, and a navigation function for vehicles and pedestrians. At least one of the above may be included in a congested traffic information providing function, a public transportation route providing function, and an arrival information providing function.

The POI information stored in the POI information database 116 includes service contents having characteristics of each service item of the electronic map service, and has latitude, longitude, and altitude location coordinate values for each service content in the information. Each service content includes individual property information such as one or more of color, shape, size, width, location on the map, event information, sound effect, and event response information, and each property information is composed of text data. It is.

10 is a diagram illustrating a functional configuration of the mobile communication terminal 110 having map information according to the second embodiment of the present invention. As shown in FIG. 10, the mobile communication terminal 110 includes a memory 120, a POI requester 122, a POI receiver 124, an electronic map display 126, and a display state converter 128. It is composed. Of course, the mobile communication terminal 110 according to the second embodiment of the present invention also has a key input unit, a microprocessor, a digital signal processing unit, a display unit, a speaker, a communication signal processing unit, a communication signal transmission unit, a transmitter, Although hardware components such as a receiver are provided, a description of general functional operations that will not help in understanding the present invention will be omitted. On the other hand, the functionally expressed POI request unit 122, POI receiving unit 124, electronic map display unit 126 and display state conversion unit 128, respectively, and the software corresponding to the various hardware constituting the mobile communication terminal 110 It is composed by the combination of

The memory 120 includes programs constituting the POI request unit 122, the POI receiving unit 124, the electronic map display unit 126, and the display state converting unit 128, and various system programs and applications. The data is stored.

In addition, as illustrated in FIG. 4, the memory 120 stores background map data of the whole country, and the background map data is divided into a plurality of partition blocks M1 to Mn partitioned according to a rule for determining a boundary of each region. It consists of the form of divided vector data. Each partition block M1 to Mn includes a plurality of scale-specific background map data m1 to mn in which 1 / n to n / n scales are formed in multiple stages. Here, the background map data includes basic background data constituting the map, such as the existence and width of roads, mountains and plains, rivers and seas, pictures of major buildings, and main piers.

In addition, the memory 120 partially stores the POI information downloaded from the map information server 112 by POI request information for receiving a background map of a specific region and POI information corresponding to a specific service. On the other hand, the memory capacity for storing the POI information needs to be allocated not too large in consideration of the memory capacity limit of the mobile communication terminal 110. Therefore, when the POI information is continuously downloaded and stored, when the space of the memory 120 for storing the POI information is insufficient, the POI information is stored and the latest POI information is stored.

The POI request unit 122 transmits POI request information for receiving the background map of the specific area and POI information corresponding to the specific service to the map information server 112 through the wireless network. POI request information includes location information of a specific area to be searched (for example, the current location of a mobile communication terminal, another location that a user wants to search, or a departure point / destination destination in a navigation function for a traffic service), and a specific service. Item information (for example, search item information for each service item) and range information (information about a range including POI information based on location information, for example, scale) are included.

The POI receiving unit 124 receives POI information and second POI list information (to be described later) from the map information server 112, and stores the received POI information in the memory 120.

The electronic map display unit 126 is provided in advance or downloaded from the map information server 112 based on the second POI list information provided from the map information server 112 on the background map of the specific area drawn out from the memory 120. The POI information stored at 120 is matched and displayed on the screen. The electronic map display unit 126 is implemented by an electronic map browser program supported by the electronic map processing engine program described below.

The display state converting unit 128 switches the display state of the electronic map combined with the background map displayed on the screen and the POI information by any one of enlargement, reduction, vertical movement, and horizontal movement by a user's key operation. The display state converting unit 128 includes a background map extracting unit 130, a POI scale adjusting unit 132, and a POI display unit 134. The background map extractor 130 is implemented by an electronic map browser program, and the POI scale adjustment unit 132 and the POI display unit 134 are implemented by an electronic map processing engine program.

When the display change of the electronic map displayed on the screen is selected by the user's key manipulation, the background map extractor 130 extracts the scaled background map according to the display change from the multi-scale scale background map stored in the memory 120. .

The POI scale adjusting unit 132 calculates the scale according to the display switching, and adjusts the scale for each service content of the POI information according to the calculated scale.

The POI display unit 134 draws and displays the background map of the scale according to the display change and the POI information of which the scale is adjusted according to the position coordinate value of the converted scale.

11 is a diagram showing the detailed configuration of the map information server 112 according to the second embodiment of the present invention. As illustrated in FIG. 11, the map information server 112 according to the second embodiment of the present invention may include a communication processor 140, a POI list generator 142, a POI comparator 144, and a map information controller ( 146) and the POI information requesting unit 148.

The communication processor 140 performs communication for providing POI information according to the map information service with the mobile communication terminal 110 through a wireless network.

The POI list database 141 stores a list of previously downloaded POI information for each mobile communication terminal provided with the electronic map service through the wireless network in the form of POI list information composed of POI metadata. Doing.

The POI list generating unit 142 may include location information of a specific region to be searched (eg, the current location of the mobile communication terminal or other information that the user wants to search) included in the POI request information provided from the mobile communication terminal 110. Information about the range including POI information based on location information, specific service item information (e.g., search term information for each service item), and range information (e.g., departure point / destination in navigation function for location or traffic guidance service) For example, referring to the basic information about the POI information provided by the POI information server 114 and the scale information, POI list information about one or more POI information to be displayed and transmitted to the mobile communication terminal 110 is displayed. POI list information) is generated. The second POI list information is composed of meta data including identification number and / or version information of the corresponding POI information and is generally smaller than the size of the POI information. When the range information included in the POI request information is a scale, a range of a region corresponding to the scale may be determined. If the scale is not included in the POI request information, a predetermined default scale value may be used.

The POI comparison unit 144 compares the POI list information for each terminal stored in the POI storage list database 141 with the second POI list information generated from the POI list generation unit 142 and displays it on the corresponding mobile communication terminal 110. Check whether the POI information to be stored is already stored in the mobile communication terminal (110). This can be done by comparing the identifier and / or version information of the POI information.

The POI information requesting unit 148 requests POI information server 114 to provide POI information to be provided to the mobile communication terminal 110 and receives the requested POI information.

The map information control unit 146 receives POI information determined to be non-duplicate from the POI information server 114 through the POI information requesting unit 148 according to the POI overlapping check result from the POI comparison unit 144. The second POI list information generated by the POI list generator 142 is packaged with the POI information and provided to the mobile communication terminal 110. In addition, the map information controller 146 transmits the new POI information to the mobile communication terminal 110, and the POI information transmitted to the mobile communication terminal 110 is regarded as being stored in the memory 120. The POI list of 141 is updated.

The matching display operation of the background map and the POI information through the electronic map browser and the electronic map processing engine according to the second embodiment of the present invention is performed by the electronic map browser and the electronic apparatus according to the first embodiment of the present invention according to FIGS. 5 to 7. Since overlapping operation of the background map and POI information through the map processing engine is basically the same, duplicated descriptions will be omitted.

Hereinafter, an operation process of the second embodiment of the present invention will be described in detail with reference to FIG. 12.

First, the map information server 112 is in a state of constructing a POI storage list database 141 which databases a list of POI information for each terminal for all mobile communication terminals provided with an electronic map service through a wireless network. (Step S30).

The mobile communication terminal 110 executes the electronic map browser 50 of the memory 120 according to the electronic map service execution input by the user's key button manipulation (step S31), and the electronic map browser 50 stores the memory ( From the background map data for each block in block 120, the background map data of the specific area desired by the user is extracted by position calculation and displayed on the screen (step S32).

In this state, the mobile communication terminal 110 displays POI information of a specific service item to be displayed on a map for a specific area according to a user's key button manipulation (for example, a main building, a financial institution, and a restaurant serving a specific area). Information such as information) or a POI information search word of a specific service item through a menu, and location information of a specific region to be searched (for example, the current location of a mobile terminal or Other locations to search for, such as departure point / destination in the navigation function for the navigation service, specific service item information (for example, search term information for each service item), and range information (POI information based on location information) are included. Map information server 112 via POI request information, including, for example, a scale) as information about a range; Transmits (step S34).

The POI list generating unit 142 of the map information server 112 includes location information, specific service item information, range information, and POI information server of a specific region to be searched included in POI request information provided from the mobile communication terminal 110. POI list information (second POI list information) for one or more POI information to be transmitted and displayed to the mobile communication terminal 110 is generated with reference to the basic information on the POI information provided by 114 (step S35). When the range information included in the POI request information is a scale, a range of a region corresponding to the scale may be determined. If the scale is not included in the POI request information, a predetermined default scale value may be used.

The POI comparison unit 144 of the map information server 112 compares the POI list information for each terminal stored in the POI storage list database 141 with the second POI list information generated from the POI list generator 142 and moves the corresponding POI list. It is checked whether the POI information to be displayed on the communication terminal 110 is already stored in the mobile communication terminal 110 (step S36).

The map information controller 146 of the map information server 112 confirms whether the POI information to be displayed on the mobile terminal 110 is already stored in the terminal through the POI comparison unit 142, and thus, all the POI information is stored in the terminal. If it is determined that the control unit is to transmit only the second POI list information to the mobile communication terminal 110, and if it is determined that some duplicate data is included in the POI information server 114 except for the duplicate POI information except for the duplicate POI information On the other hand, if it is determined that all the POI information is not duplicated, all the POI information is requested to the POI information server 114 (step S37).

Accordingly, the POI information server 114 extracts the POI information requested through the map information server 112 from the POI information database 116 and transmits the POI information to the map information server 112 (step S38). The map information controller 146 of 112 may package the second POI list information generated by the POI list generator 142 and the POI information received from the POI information server 114 and transmit the package information to the mobile communication terminal 110. (Step S39).

When the mobile communication terminal 110 receives the POI information from the map information server 112, the mobile communication terminal 110 stores the POI information in the memory 120, and withdraws the POI information from the memory 120 with reference to the received second POI list information. Each service content of the POI information is displayed on the background map (step S40).

Meanwhile, the map information controller 146 of the map information server 112 transmits the POI information from the POI information server 114 to the corresponding terminal in the POI storage list database 141 as the POI information is provided to the mobile communication terminal 110. The POI list is updated (step S41).

So far I looked at the center of the preferred embodiment for the present invention. Those skilled in the art will appreciate that the present invention can be implemented in a modified form without departing from the essential features of the present invention. Therefore, the disclosed embodiments should be considered in an illustrative rather than a restrictive sense. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the scope will be construed as being included in the present invention.

1 is a diagram showing the configuration of a system for providing map information in a wireless network according to a first embodiment of the present invention;

2 is a diagram illustrating a functional configuration of a mobile communication terminal with map information according to a first embodiment of the present invention;

3 is a diagram showing a detailed configuration of a map information server according to a first embodiment of the present invention;

4 is a diagram illustrating a configuration of a background map stored in a memory of the mobile communication terminal illustrated in FIG. 2;

FIG. 5 is a diagram illustrating a state of matching and displaying POI information provided from a server on a background map stored in a memory through a process of an electronic map browser and an electronic map processing engine according to the first embodiment of the present invention; FIG.

FIG. 6 is a diagram directly showing a matching display state of a background map read from a memory and a POI information downloaded from a server through an electronic map browser according to the first embodiment of the present invention;

7 is a diagram illustrating a state in which POI information whose scale is corrected is matched and displayed on a scaled background map according to scale switching of a map according to the first embodiment of the present invention;

FIG. 8 is a diagram illustrating an operation of receiving and matching POI information with a background map by using a redundant check through a POI list provided from a mobile communication terminal in a method of providing map information in a wireless network according to a first embodiment of the present invention. Flowchart,

9 is a diagram illustrating a configuration of a system for providing map information in a wireless network according to a second embodiment of the present invention;

10 is a view showing a functional configuration for a mobile communication terminal with map information according to a second embodiment of the present invention;

11 is a diagram showing the detailed configuration of a map information server according to a second embodiment of the present invention;

12 is a view illustrating matching with a background map by receiving POI information by using a duplicate check through a POI list for each terminal constructed in a map information server in a method for providing map information in a wireless network according to a second embodiment of the present invention; This is a flowchart describing.

<Explanation of symbols for the main parts of the drawings>

10, 110: mobile communication terminal, 12, 112: map information server,

14, 114: POI information server, 16, 116: POI information database,

20, 120: memory 22, 122: POI request unit

24, 124: POI receiving unit 26, 126: electronic map display unit

28, 128: display state conversion unit 30, 130: background map drawing unit

32, 132: POI scale adjustment unit 34, 134: POI display unit

40, 140: communication processing unit 42, 142: POI list generation unit

44, 144: POI comparison unit 46, 146: map information control unit

48, 148: POI information request unit 141: POI list database

Claims (18)

POI request for receiving a POI corresponding to a background map and a specific service of a specific region while the communication terminal stores background map data and POI list information about previously downloaded point of interest (POI) information in a memory. Transmitting the information together with the POI list information to a map information server; A second step of the map information server fetching only POI information which is not duplicated through comparison with the POI list information among POIs corresponding to the POI request information transmitted from the communication terminal and transmitting the same to the communication terminal; And And a third step of matching the POI information provided from the map information server or pre-downloaded with the background map of the specific area drawn out from the memory by the communication terminal and displaying it on the screen. How to Provide Information. A memory for storing background map data, previously downloaded partial point of interest (POI) information, and POI list information recording a list of the partial POI information; A POI request unit for transmitting POI request information for receiving background map of a specific region and POI information corresponding to a specific service to a map information server together with the POI list information; A POI receiver configured to receive POI information from the map information server and store the POI information in the memory; And And an electronic map display unit which is provided from the map information server or downloaded in advance on a background map of a specific region drawn out from the memory and matches the POI information stored in the memory and displays the screen. terminal. The method of claim 2, wherein the POI request information And a location information, service item information, and range information. The memory of claim 2, wherein the memory includes: A communication terminal with map information, characterized in that the background map data of the electronic map of the nationwide area is divided into block regions divided by area boundaries, and the background maps are classified and stored in multiple levels for each block block. A memory for storing background map data, previously downloaded partial point of interest (POI) information, and POI list information recording a list of the partial POI information; A POI request unit for transmitting POI request information for receiving background map of a specific region and POI information corresponding to a specific service to a map information server together with the POI list information; A POI receiver configured to receive POI information from the map information server and store the POI information in the memory; An electronic map display unit for displaying and displaying the POI information provided or pre-downloaded from the map information server on a background map of a specific region drawn out from the memory and displayed on the screen; And Communication state with a map information, characterized in that it comprises a; display state conversion unit for switching the display state to any one of the enlarged, reduced, up and down, left and right movements of the electronic map combined with the background map and POI information displayed on the screen . The display apparatus of claim 5, wherein the display state converting unit A background map extracting unit for extracting a scaled background map according to display switching from a multi-stage scaled background map stored in the memory when the display change of the electronic map displayed on the screen is selected; A POI scale adjusting unit for calculating a scale according to the display switching and adjusting the scale of each service content of the POI information according to the calculated scale; And And a POI display unit for matching the background map of the scale according to the display change and the scaled POI information according to the position coordinate value of the scale to be drawn and displayed on the screen. . A map information server for providing POI information to a communication terminal in which POI information according to an electronic map service is partially stored and first POI list information of the POI information is stored. A POI list generating unit for generating second POI list information on POI information provided to the communication terminal according to the POI request information from the communication terminal; A POI comparison unit for comparing the first POI list information and the second POI list information received together with the POI request information from the communication terminal; And And a map information control unit for controlling to transmit the POI and the second POI list information extracted through the POI comparator to the communication terminal. The method of claim 7, wherein the POI comparison unit Map information server, characterized in that the comparison using any one or more of the POI information identifier and POI information version. The method of claim 7, wherein the map information control unit And a request for POI information deemed necessary by the POI comparator to transmit to the communication terminal. A first step of transmitting, by the communication terminal, POI request information for receiving POI information corresponding to a background map of a specific region and a specific service while the background map data is stored in a memory; The map information server stores a list of POI information previously downloaded for each communication terminal in a database, and is not duplicated through comparison with a corresponding POI list among POI information corresponding to POI request information transmitted from the communication terminal. Extracting only POI information and transmitting it to the communication terminal; And And a third step of matching the POI information provided from the map information server or pre-downloaded with the background map of the specific area drawn out from the memory by the communication terminal and displaying it on the screen. How to Provide Information. A memory for storing background map data and some point of interest (POI) information previously downloaded; A POI request unit for transmitting POI request information for receiving a background map of a specific region and POI information corresponding to a specific service to a map information server; A POI receiver configured to receive POI information from the map information server and store the POI information in the memory; And An electronic device which displays POI information provided from the map information server or downloaded in advance on a background map of a specific area drawn from the memory based on the second POI list information provided from the map information server and displayed on the screen; Communication terminal with map information, characterized in that it comprises a; map display unit. The method of claim 11, wherein the POI request information And a location information, service item information, and range information. The memory of claim 11, wherein the memory includes: A communication terminal with map information, characterized in that the background map data of the electronic map of the nationwide area is divided into block regions divided by area boundaries, and the background maps are classified and stored in multiple levels for each block block. A memory for storing background map data and some point of interest (POI) information previously downloaded; A POI request unit for transmitting POI request information for receiving a background map of a specific region and POI information corresponding to a specific service to a map information server; A POI receiver configured to receive POI information from the map information server and store the POI information in the memory; An electronic device which displays POI information provided from the map information server or downloaded in advance on a background map of a specific area drawn from the memory based on the second POI list information provided from the map information server and displayed on the screen; A map display unit; And Communication state with a map information, characterized in that it comprises a; display state conversion unit for switching the display state to any one of the enlarged, reduced, up and down, left and right movements of the electronic map combined with the background map and POI information displayed on the screen . 15. The display device of claim 14, wherein the display state converting unit A background map extracting unit for extracting a scaled background map according to display switching from a multi-stage scaled background map stored in the memory when the display change of the electronic map displayed on the screen is selected; A POI scale adjusting unit for calculating a scale according to the display switching and adjusting the scale of each service content of the POI information according to the calculated scale; And And a POI display unit for matching the background map of the scale according to the display change and the scaled POI information according to the position coordinate value of the scale to be drawn and displayed on the screen. . A map information server for providing POI information to a communication terminal in which POI information according to an electronic map service is partially stored, A POI list database in which a list of POI information downloaded in advance for each communication terminal is stored in a database; A POI list generating unit for generating second POI list information on POI information provided to the communication terminal according to the POI request information from the communication terminal; A POI comparison unit comparing the POI list corresponding to the communication terminal with the second POI list information; And The POI information and the second POI list information extracted through the POI comparison unit are controlled to be transmitted to the communication terminal, and the POI list of the communication terminal is updated in the POI storage list database with respect to the POI information transmitted to the communication terminal. And a map information controller configured to control the map information server. The method of claim 16, wherein the POI comparison unit Map information server, characterized in that the comparison using any one or more of the POI information identifier and POI information version. The method of claim 16, wherein the map information control unit Map information server, characterized in that for controlling the POI information that is deemed necessary by the POI comparator to transmit to the POI information server to the communication terminal.

Images