JP2007520686A - Map display method and map display system for navigation enabling route re-search by map matching forced leave command - Google Patents

Abstract

The present invention provides a map display method for navigation and a map capable of actively blocking the provision of a map information service having a map matching error when there is a difference between a user position mapped on map data and an actual user position. A method for displaying a map on a mobile communication terminal for navigation according to an embodiment of the present invention relating to a display system includes receiving GPS coordinate data of the mobile communication terminal from a predetermined GPS receiver, and the mobile communication terminal Displaying the map data stored in the storage means of the machine on a predetermined display means, referring to the GPS coordinate data and the map data, and displaying the position of the mobile communication terminal on the map data on the display means A map matching display step, a map matching forced leave command from a user is received, and the map marker In response to the quenching forced withdrawal instruction and a step of controlling the mobile terminal in the map matching standby state. According to the present invention, when providing map information, if there is a difference between the user position on the map data and the actual user position, the map for navigation that can actively block the provision of the map information service having the map matching error. There is an advantage that a display method and a map display system can be provided.

Description

  The present invention relates to a map display method for navigation and a map display system, and more particularly, to provide a map information service having a map matching mapping error when there is a difference between a user position mapped on map data and an actual user position. The present invention relates to a map display method for navigation and a map display system capable of actively shutting down a map.

  The navigation system receives predetermined position data from GPS (satellite navigation system) satellites floating on the earth, and using this position data, the current position information of the user, the movement path information from the current position to the destination, It is a service device that can provide a wide variety of information such as traffic information to the user.

  In general, the above-described information providing service in the navigation system provides both map information related to position information or movement route information so that the user can easily recognize information visually. Therefore, the user can receive the provision of the predetermined area information where he / she is located as map information, and the user's position is displayed on the provided map information, so that the user's position information and the moving information to be moved are accurate. To be able to grasp.

  However, a difference may occur between the user position on the map and the actual user position due to a map production error or a GPS coordinate error when calculating the user position. For example, when a user travels on an elevated road, an error in map information causes a problem that the user's position is determined on a road that can travel under the elevated road or in parallel with the elevated road on the map. There are things to do. In other words, when a road that is similar to the environment of the road on which the user actually travels borders, the error that the user leaves the actual travel route and maps and provides the user position on another route survives. It is a well-known fact. However, in each navigation system, there is a limit range for mapping the user position. If the difference between the user movement route on the map and the actual position data exceeds this limit range, an error is recognized and the user position mapping is performed. It is configured to re-correct.

  However, if the user's driving environment is maintained within the above-mentioned mapping limit range, the navigation system cannot recognize the mapping error at all, and this provides the user with continuous error data. I have.

  Therefore, when there is a difference between the user position on the map and the actual user position, the user can make the system recognize the error occurrence by actively blocking the map information service, thereby improving the map information. There is an urgent need for a new concept map display method and map display system that can provide services.

  The present invention has been devised to solve the above-described problems. When map information is provided, if there is a difference between the user position on the map data and the actual user position, a map matching error is generated. It is an object of the present invention to provide a map display method for navigation and a map display system capable of actively interrupting the provision of a map information service having.

  In addition, map matching errors can be reduced by performing a route re-search based on the current location of the user after the occurrence of a map matching forced leave command to block map provision including map matching errors. Another object of the present invention is to provide a map display method and map display system for navigation.

  In addition, the map information provision status is controlled in the map matching standby state by the occurrence of a map matching forced withdrawal command, and the map matching error can be reduced by setting a new map matching rule that replaces the existing map matching rule. Still another object of the present invention is to provide a map display method and map display system for navigation.

  A method for displaying a map on a mobile communication terminal for navigation according to an embodiment of the present invention for achieving the above object includes receiving GPS coordinate data of the mobile communication terminal from a predetermined GPS receiver, Displaying the map data stored in the storage means of the mobile communication terminal on a predetermined display means, referring to the GPS coordinate data and the map data, and determining the position of the mobile communication terminal on the map data; And displaying the map matching on the display means, and receiving a map matching forced leaving command from the user and controlling the mobile communication terminal in a map matching standby state in response to the map matching forced leaving command. .

  Further, as a technical configuration for achieving the above object, a navigation map display system includes an interface module for receiving GPS coordinate data of a mobile communication terminal from a predetermined GPS receiver, and the mobile communication terminal. A display control module for displaying the map data stored in the storage means on a predetermined display means, and the position of the mobile communication terminal on the displayed map data is displayed by map matching on the display means A map matching module that controls the mobile communication terminal in a map matching standby state in response to the map matching forced leave command when receiving a map matching forced leave command from the user.

  As can be understood from the above description, according to the present invention, when map information is provided, if there is a difference between the user position on the map data and the actual user position, a map information service having a map matching error is provided. It is possible to provide a navigation map display method and a map display system that can be actively blocked.

  In addition, according to the present invention, after a map matching forced leave command for blocking map provision including a map matching error is generated, a route re-search is performed based on the current position of the user, thereby reducing the map matching error. It is possible to provide a map display method and map display system for navigation.

  In addition, according to the present invention, the map information provision state is controlled in the map matching standby state by the occurrence of the map matching forced leaving command, and the map matching error is reduced by setting a new map matching rule instead of the existing map matching rule. It is possible to provide a map display method and map display system for navigation that can be reduced.

  Hereinafter, a navigation map display method and a map display system according to the present invention will be described with reference to the accompanying drawings.

  Here, the user is a navigation service user who receives the provision of the map information service via the mobile communication terminal, or considering that the user moves with the mobile communication terminal. The position data of the mobile communication terminal of the present invention can be assumed to be the same as the user position data.

  FIG. 1 is a diagram for explaining a schematic operation of a navigation map display system according to the present invention.

  The map display system 100 of the present embodiment is provided with map information as a map information service, and can be incorporated in a mobile communication terminal 150 that can be carried by a user. Here, the mobile communication terminal 150 is a terminal device that includes a processor unit to perform a predetermined calculation and can perform communication using a communication unit, such as a mobile phone, a cellular phone, and a PDA. It can be.

  The mobile communication terminal 150 receives map data related to the specific area from the predetermined map data providing device 120, and the received map data is stored in the storage means 110 built in the mobile communication terminal 150. To. The storage means 110 is a hard disk or memory that stores map data, and the size (or capacity) of map data received by a single map data transmission request from the map data providing device 120 depending on the storage capability of the storage means 110. Will be affected.

  The map data providing device 120 maintains map data in a relatively wide area and provides map data to the mobile communication terminal 150. For example, the map data providing device 120 maps according to a predetermined contract relationship with the mobile communication terminal 150. It may be a map data providing server that provides an information service via wired or wireless, or a map data storage medium such as a compact disk or DVD having a large amount of storage capability. The map data providing apparatus 120 can transmit map data in a specific limited area in response to a map data transmission request from the mobile communication terminal 150, and can be used by a user 160 who wants to receive a map information service. The map image itself of the corresponding area is transmitted to the mobile communication terminal 150, or vector data including map elements (the vector data refers to data for generating characteristic map data through the combination at the output end). Let

  The GPS receiver 130 is a navigation system that calculates position coordinate values for a specific area and a specific object. In this embodiment, the GPS coordinate data of the mobile communication terminal 150 is obtained through position tracking for the mobile communication terminal 150. Will be calculated. Normally, the GPS coordinate data is calculated using a method such as position tracking using a plurality of GPS satellites or position tracking using a transmission ID of the mobile communication terminal 150. Such GPS coordinate data can display, for example, an area or an object whose position is tracked based on the world geodetic system (WGS-84) in a (longitude, latitude) system.

  Based on the GPS coordinate data described above, the map display system 100 calls the map data of the corresponding area where the mobile communication terminal 150 is located from the storage means 110, and if the map data does not exist in the storage means 110 by any chance Controls to generate the map data transmission request and receive the map data of the additional area from the map data providing apparatus 120. The called map data is displayed on the display means 140 such as a liquid crystal screen or other display screen of the mobile communication terminal 150. In addition, in the map data display on the display means 140, the map display system 100 displays the position of the mobile communication terminal 150 on the data by map matching. Here, the map matching is to designate / display the position of the mobile communication terminal 150 on the map data displayed on the display means 140 based on the selected criterion, and a detailed description related thereto will be described later. To do. Accordingly, the map display system 100 provides the map information service by providing the map data on which the position of the mobile communication terminal 150 is displayed to the user 160 through the display unit 140.

  Accordingly, when a map matching forced withdrawal command is generated by the user 160, the map display system 100 controls the mobile communication terminal 150 to enter a map matching standby state by temporarily suspending the map matching process. In such a map matching forced leave command, the user 160 compares the position of the mobile communication terminal 150 displayed on the display means 140 with the actual position of the mobile communication terminal 150, and there is a difference between the two positions. In some cases, it is generated by the judgment of the user 160. For example, the map display system 100 includes a forced release command generation means (not shown) in a key button provided in the mobile communication terminal 150 or an active area of a liquid crystal screen (eg, activated by a touch signal on the touch screen). Can be configured such that a forced detachment command is issued when a user input confirmation button click, active region contact, or the like is made.

  As a result, the map display system 100 of the present invention not only provides a normal map information service for navigation, but also allows the user to actively block map information including errors so that only accurate map information is provided. Can provide corrective services. Hereinafter, a specific configuration of the map display system 100 will be described with reference to FIG.

  FIG. 2 is a block diagram showing a navigation map display system according to a preferred embodiment of the present invention.

  The map display system 200 of the present invention includes an interface module 210 for receiving GPS coordinate data of the mobile communication terminal 150 from a predetermined GPS receiver 130, and map data stored in the storage means 110 of the mobile communication terminal 150. A display control module 220 for displaying the position of the mobile communication terminal 150 on the displayed map data on the display means 140 by map matching and displaying on the display means 140, And an operation control module 240 for controlling the mobile communication terminal 150 in a map matching standby state in response to the map matching forced leaving command when a map matching forced leaving command is received from the user 160.

  First, the interface module 210 serves to receive the GPS coordinate data of the mobile communication terminal 150 calculated by the GPS receiver 130. In particular, the interface module 210 identifies and orthographically identifies the corresponding area map data where the mobile communication terminal 150 is located. Receive GPS coordinate data for a reference ground survey point for (orthogonal projection). The reference ground survey point means the terrain or object position that serves as a reference for interpreting the position on the map data and the actual positional relationship on the ground. Such a reference ground survey point is preferably a road intersection or bridge. Select one that is easy to identify, such as the corner of That is, the reference ground survey point is obtained by making accurate GPS coordinate data known by the existing GPS coordinate measurement, and by interpreting the relation with the reference ground survey point, the mobile communication terminal 150 on the map data. The position of can be calculated accurately.

  The display control module 220 performs orthogonal projection on the map data stored in the storage unit 110 based on the GPS coordinate data of the mobile communication terminal 150. That is, the display control module 220 extracts map data of a specific area that must be displayed on the display means 140 from the map data stored in the storage means 110, and refers to FIGS. 3a and 3b. The orthogonal projection will be described.

  3a and 3b are diagrams for explaining extraction of map data by performing orthogonal projection according to the present invention.

  The map data received from the map data providing device 120 in response to the map data transmission request of the mobile communication terminal 150 may vary depending on the storage capability of the storage means 110. It contains map data that is larger than the displayed area. Accordingly, it is necessary to extract the map data of the area substantially displayed on the display means 140. Therefore, the display control module 220 of the present invention is based on, for example, the movement route of the mobile communication terminal 150. Perform orthographic projection.

  For example, consider the case where the GPS coordinate data of the mobile communication terminal 150 is received by the GPS receiver 130 as (E126M60, N37M15). The mobile communication terminal 150 transmits a map data transmission request to a predetermined map data providing device 120, and receives map data corresponding to the GPS coordinate data of the mobile communication terminal 150 from the map data providing device 120 in response to the request. . At this time, the map data providing apparatus 120 compares the GPS coordinate data of the mobile communication terminal 150 with the GPS coordinate data of the reference ground survey point, thereby mapping the corresponding area including the GPS coordinate data of the mobile communication terminal 150. The data is easily identified and transmitted to the mobile communication terminal 150. For example, when the GPS coordinate data of the mobile communication terminal 150 is (E126M60, N37M15), the map data providing device 120 includes the map as shown in FIG. 3A including the GPS coordinate data (E126M60, N37M15) of the mobile communication terminal 150. The data is transmitted to the mobile communication terminal 150. The area range of the map data transmitted to the mobile communication terminal 150 may vary depending on the transmission capability of each map data providing device 120, but the map is largely larger than the area actually displayed on the display means 140. Data is sent. 3A stored in the storage unit 110 is map data of a predetermined area related to the position of the mobile communication terminal 150, the position of the user 160 is not displayed on the map data (map matching). Or the previous map data.

  The orthographic projection is for extracting only the area where the mobile communication terminal 150 is located and actually displayed on the display means 140 from the area of the stored map data (dotted line in FIG. 3a). Further, the orthogonal projection can be performed in consideration of the traveling direction of the mobile communication terminal 150, the map data scale, the display size of the display means 140, etc., for example, as shown in FIG. The orthogonal projection can be performed so that the traveling direction of the vehicle is always upward. Accordingly, the map data extracted from the map data of FIG. 3a and displayed on the display means 140 changes continuously according to the moving direction of the mobile communication terminal 150. Further, when the boundary points (for example, the four vertices of the square) of the orthogonally projected map data reach the predetermined limit range of the map data in FIG. 3a, for example, the display control module 220 moves from the map data providing device 120. It is possible to control so that the map data of the next region according to the progress of the communication terminal 150 is received.

  The map matching module 230 is a means for map matching for mapping the position of the mobile communication terminal 150 to the map data extracted by orthographic projection, and the GPS coordinate data error input by the GPS receiver 130, the map It corrects errors in the data itself and displays the position of the mobile communication terminal 150 on the displayed map data. In other words, map matching refers to the task of adjusting and displaying the position of the mobile communication terminal 150 on the map data in consideration of road requirements and GPS conditions, assuming that there is an error in the map data and GPS coordinate measurement. can do. In the unlikely event that the received GPS coordinate data of the mobile communication terminal 150 is directly mapped onto the displayed map data, the user 160 who carries the mobile communication terminal 150 due to a map data error or a GPS calculation error, etc. However, there is a problem that the user 160 may be mapped inside a building that is not a road even though the vehicle is traveling using high-speed transportation means. Accordingly, the map matching module 230 corrects the display position of the mobile communication terminal 150 so that the map 160 can be accurately displayed on the road on which the user 160 is traveling so that an accurate map information service is provided. . The map matching for mapping the position of the mobile communication terminal 150 will be described in detail with reference to FIGS. 4a to 4c.

  The present embodiment will be described on the assumption that the user 160 is carrying a mobile communication terminal 150 and traveling on a transportation means, for example, an automobile.

  First, the map matching module 230 gives a predetermined weight value based on a criterion selected for each road data (area where the vehicle can travel) on the map data displayed on the display means 140. Such weight values are used to give an accurate position display by giving many points to a road where the mobile communication terminal 150 is likely to be actually located. In addition, the map matching module 230 performs control so that the position of the mobile communication terminal 150 is determined as one road data having the highest weight value among the weight values assigned to each map data.

  FIG. 4a is a diagram illustrating an example of map matching when the selected criterion is the movement route information of the mobile communication terminal 150, and as illustrated in FIG. 4a, the GPS coordinate data of the mobile communication terminal 150 If A is A, the map matching module 230 gives a weight value based on the travel route information that the mobile communication terminal 150 has traveled before. For example, if the travel route information of the mobile communication terminal 150 is ..., A2, A1, the map matching module 230 may determine that the mobile communication terminal 150 will travel on the first road continuously. it can. Accordingly, the map matching module 230 can give a higher weight value to the first road than the second road, and can control the map matching for A to be displayed as A0 on the first road.

  FIG. 4b is a diagram illustrating an example of map matching when the selected reference is distance information from the GPS coordinate data of the mobile communication terminal 150, and as shown in FIG. 4b, the mobile communication terminal If the GPS coordinate data of 150 is B, the map matching module 230 can give a difference in weight depending on the distance between B and each road. As shown in Fig. 4b, when the distance information of the first road to the third road is calculated with reference to B, the distance from each road is obtained as follows: first road <second road <third road Can do. Accordingly, the map matching module 230 can assign a higher weight to the first road that is shorter (closest) than the second road or the third road, and the map matching for B is B0 on the first road. Can be controlled to be displayed.

  FIG. 4c is a diagram illustrating an example of map matching when the selected criterion is current state information of road data, and the map matching module 230 is a road in the travel of the user 160 carrying the mobile communication terminal 150. The state is analyzed, and a difference value is given to each road data. For example, as shown in FIG. 4c, when the GPS coordinate data of the mobile communication terminal 150 is C and the moving speed of the mobile communication terminal 150 is 100 km / h, such a speed is applied to the local area. Since no road currently exists, the map matching module 230 can determine that the user 160 is traveling on the highway. Accordingly, the map matching module 230 can give a higher weight value to the expressway than the local road, and can control the map matching for C to be displayed on the expressway as C0. The current status information includes road loss information, road construction / repair information, etc. in addition to the movement speed information that can be applied to optimize the movement speed of the mobile communication terminal 150 described above. Of course, the map matching module 230 can be controlled so that map matching is not performed on possible roads.

  The operation control module 240 is a map that temporarily suspends the map matching of the mobile communication terminal 150, preferably the map matching module 230, when a map matching forced leave command is issued from a user who has received map data that has been matched. Control in the matching standby state. As described above, the map matching forced leave command is determined according to the determination of the user 160 when there is a difference between the map-matched mobile communication terminal 150 displayed on the display unit 140 and the actual mobile communication terminal 150. To be generated. Further, the map display system 200 in the map matching standby state temporarily stops the map matching for the next GPS coordinate data, and performs, for example, a predetermined process for new map matching rule of the map matching module 230. Detailed explanation about this will be described later (see FIG. 7).

  Accordingly, the map display system 200 according to the present invention provides the user with map data to which accurate map matching is applied by allowing the user to stop providing map data including an error according to the user's discretion. The effect to be made can be acquired.

  The work flow of the map display system according to the present invention having such a configuration will be described in detail.

  FIG. 5 is an operation flowchart specifically illustrating a map display method according to a preferred embodiment of the present invention.

  The map display method according to the present embodiment is performed by the map display system 200 described above.

  First, the map display system 200 receives GPS coordinate data of the mobile communication terminal 150 from the GPS receiver 130 (S510). In this stage (S510), the current position information of the mobile communication terminal 150 calculated by the GPS receiver 130 is received as coordinate data expressed by (longitude, latitude) by the world geodetic system (WGS-84), for example. It is a process to do.

  Further, the map display system 200 displays only the map data indicating the specific area from the map data stored in the storage means 110 of the mobile communication terminal 150 on the display means 140 (S520). When map data is transmitted to the mobile communication terminal 150, map image data of a predetermined area range can be received from the predetermined map data providing device 120 according to the movement route information of the mobile communication terminal 150, and includes map elements Vector data can also be received. At this time, when the map data is map image data, the map display system 200 can control the display area to be extracted by the above-described orthographic projection (see FIGS. 3a and 3b).

  Accordingly, when the map data is vector data, the map display system 200 controls to extract the map data of the display area through the combination (S530). Here, the vector data includes linear data for indicating elements that can be displayed with lines such as roads and rivers, polygon data for indicating map elements such as buildings and objects having an external volume, and regions on the map data. Or text data for displaying an explanation for the area is included. Such vector data includes only a small amount of data such as direction information and size information for indicating map elements, and when transmitting from the map data transmission device 120 to the mobile communication terminal 150, the amount of transmission traffic is reduced. can do. Therefore, data transmission using vector data can obtain an effect of transmitting map data in a wider area using less transmission traffic than transmission of map image data. In addition, the mobile communication terminal 150 may include a map combination module (not shown) that generates vector map data of a specific area by combining vector data. The combined map data is, for example, the display control module 220. Is controlled to be displayed on the display means 140.

  Next, the map display system 200 refers to the GPS coordinate data and map data of the mobile communication terminal 150, and map-matches the position of the mobile communication terminal 150 on the map data (S540). This step (S540) is a process of displaying the position of the mobile communication terminal 150 on the map data displayed on the display means 140, and an embodiment of the map matching according to the present invention will be described with reference to FIG. To do.

  FIG. 6 is a diagram showing another example of the map matching method according to the present invention. As shown in FIG. 6, as an example of map matching, the map display system 200 confirms one or more road data located on the map data displayed on the display means 140, and each confirmed road data Is given a weight value based on the selected criteria (S610). This stage (S610) is a process of selecting criteria so that weight values are given to road data where the mobile communication terminal 150 is likely to be located on the map data. Such as travel route information, distance information, and road data current state information (see FIGS. 4a to 4c). Of course, the selected standard may be changed organically by the mobile communication terminal 150 depending on the purpose of travel and the propensity to travel.

  Subsequently, the map display system 200 determines one road data having the highest weight value among one or more road data to which a weight value is assigned as a map matching target (S620). In other words, the map display system 200 can determine that the road data to which the highest weight value is assigned is a road where the user 160 is likely to be actually located. Matching errors can be minimized so that accurate map information is provided to the user 160.

  Accordingly, the map display system 200 according to the present invention optimally processes the GPS position of the mobile communication terminal 150 calculated by the GPS receiver 130 and performs map matching on the map data, so that the user 160 can receive GPS coordinate data or The effect that the map data which corrected the map error by the error on map data can be provided can be acquired.

  If the mobile communication terminal 150 position on the displayed map data is different from the actual mobile communication terminal 150 position in spite of providing map data with corrected map matching errors, the user 160 may Based on this determination, a map matching forced leave command is generated. That is, the map matching forced leaving command can be generated based on the judgment of the user 160 when the map data whose position error is not overcome even by normal map matching is provided to the user 160.

  When such a map matching forced leave command is generated, the map data display device 200 receives the generated map matching forced leave command (S550), and in response to this, the mobile communication terminal 150, preferably map matching is received. The module 230 is controlled in a map matching standby state. Accordingly, even when the user 160 recognizes the position error, the map matching module 230 cannot recognize the position error, so that the problem that the map matching including the error is continuously provided can be overcome. . The map display system 200 in the map matching standby state waits for setting of a new map matching rule that replaces the existing map matching rule. Hereinafter, an alternative process of the map display system 200 after the generation of the map matching forced withdrawal command will be described in detail with reference to FIG.

  FIG. 7 is a diagram for explaining a new map matching method according to the present invention after the generation of a forced compulsion leaving command. As shown in FIG. 7, the GPS coordinate data position of the mobile communication terminal 150 on the map data is a, and the map of the mobile communication terminal 150 that has been map-matched according to the selected reference (eg, distance information). Assume that the position is b on the first road. At this time, if the actual position of the mobile communication terminal 150 is c on the second road, the map data includes a map matching error. Accordingly, it can be assumed that a map matching forced leave command is generated according to the judgment of the user 160.

  In an embodiment of the present invention, as an alternative process for overcoming the map matching error after the map matching forced leave command is issued by the user, the map display method is based on the current position c where the mobile communication terminal 150 is located. Performing a route re-search (S552). That is, in the present embodiment, the point where the user 160 carrying the mobile communication terminal 150 is located, in the case of ignoring (clearing) the moving route information that the existing user 160 has moved and the selected criteria for map matching. C is re-designated as the departure point, and the route search between the point c and the final arrival point is performed again. As a result, a new GPS position measurement, map data extraction, and map matching at the current position c of the user 160 can be performed, thereby obtaining an effect of overcoming the map matching error.

  As an alternative process for overcoming the map matching error, in another embodiment of the present invention, the map display method excludes map data road data that is currently map-matched from map matching candidates, and again performs map matching. (S554) may be included. That is, in this embodiment, the map matching is performed while maintaining the existing map matching selection criteria, but the road data (the first road in FIG. 7) in which the map matching error has occurred is excluded from the map matching target. Matching will be performed. Accordingly, an effect of overcoming the map matching error can be obtained by preventing the map matching using the road data having the map matching error. For example, in FIG. 7, when the first road having the map matching error is excluded from the map matching target, the map matching is performed on the second road according to the selected criterion (for example, the distance information), and the map matching error is reduced. You can fix it.

  Further, as an alternative process for overcoming map matching error, in yet another embodiment of the present invention, the map display method uses the GPS coordinate data of the mobile communication terminal 150 for the mobile communication terminal 150 on the map data. A map matching step (S556) may be included as a position. That is, in this embodiment, the map matching selection criterion is not applied, and the GPS coordinate data is provided to the user 160 by mapping the position of the mobile communication terminal 150 on the map data as it is. This is based on the determination that the map data that maps the position of the mobile communication terminal 150 based on the GPS coordinate data is more accurate than the map data that includes the error. As a result, the position of the mobile communication terminal 150 on the map data is located in a residential area or mountain that is not a road, and the purpose of performing map matching is lost. . However, it is possible to obtain an effect of visually confirming the occurrence of a map matching error to the user 160 by providing map data in which the GPS coordinate data is directly mapped.

  Accordingly, a map information service can be provided in which a user can actively block providing map information including an error by a map matching forced leave command, and thereby improved map matching can be performed. There is an advantage that you can.

  In the present embodiment, only the alternative processing described above is illustrated and described, but this is merely for convenience of explanation, for example, a fixed time has elapsed after the map matching forced leaving instruction. Of course, there are various methods such as listing information on alternative processing to the user (list-up). Accordingly, various alternative processes for overcoming the map matching error after the map matching forced leave command can be easily inferred by the present invention, and it is appropriate that it is the technical idea of the present invention. I will.

  Embodiments of the present invention include a computer readable medium including program instructions for performing operations embodied in various computers. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. Such media may be specially designed and constructed for the present invention, or may be known and usable by those skilled in the art of computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks and magnetic tapes, optical recording media such as CD-ROMs and DVDs, and floptical disks. Hardware devices that are specially configured to store and execute program instructions such as ROM (ROM), RAM (RAM), flash memory, and the like. The medium may be a transmission medium such as a light or metal line including a carrier wave for transmitting a signal specifying a program command, a data structure, or the like, or a waveguide. Examples of program instructions include not only machine language code such as that generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like.

  FIG. 8 is an internal block diagram of a general-purpose computer apparatus employed to perform the multi-channel video signal capturing method according to the present invention.

  The computer device 800 includes one or more processors 810 coupled to a main storage device including a RAM (RAM) 820 and a ROM (ROM) 830. The processor 810 is also referred to as a central processing unit (CPU). As is well known in the art, ROM 830 serves to transmit data and instructions (instructions) to the CPU in a unidirectional manner, while Ram 820 normally transmits data and instructions in a bidirectional manner. Used for Ram 820 and ROM 830 may include any suitable form of computer readable media. A mass storage device 840 is bi-directionally coupled to the processor 810 to provide additional data storage capability and is any of the computer-readable recording media described above. The mass storage device 840 is used to store programs, data, and the like, and is usually an auxiliary storage device such as a hard disk that is slower than the main storage device. A specific mass storage device such as a CD (ROM) 860 may be used. The processor 810 is a video monitor, trackball, mouse, keyboard, microphone, touch screen display, card reader, magnetic or paper tape reader, voice or writing recognizer, joystick, or other known computer input / output. It is coupled to one or more input / output interfaces 850 such as a device. Finally, the processor 810 can be coupled to a wired or wireless communication network via a network interface 870. The procedure of the method described above can be performed through such network connection. The above-described devices and tools are well known to those of skill in the computer hardware and software arts.

  The hardware device described above may be configured to operate as one or more software modules in order to perform the operations of the present invention.

  Although specific embodiments according to the present invention have been described so far, it goes without saying that various modifications can be made without departing from the scope of the present invention.

  Therefore, the scope of the present invention should not be defined only by the embodiments described, but should be defined not only by the claims described below, but also by the equivalents of the claims.

  As described above, the present invention has been described with reference to the limited embodiments and drawings. However, the present invention is not limited to the above-described embodiments, and those having ordinary knowledge in the field to which the present invention belongs. Thus, various modifications and variations will be possible from such a description. Accordingly, the inventive idea must be understood only by the claims described below, and it goes without saying that all equivalent or equivalent modifications belong to the category of the inventive idea.

It is a figure for demonstrating schematic operation | movement of the map display system for navigation by this invention. 1 is a configuration diagram illustrating a navigation map display system according to a preferred embodiment of the present invention. It is a figure for demonstrating extraction of the map data by orthogonal projection performance of this invention. It is a figure for demonstrating extraction of the map data by orthogonal projection performance of this invention. It is a figure which shows an example of the map matching by the selected reference | standard of this invention. It is a figure which shows an example of the map matching by the selected reference | standard of this invention. It is a figure which shows an example of the map matching by the selected reference | standard of this invention. 3 is a flowchart illustrating a map display method according to a preferred embodiment of the present invention. It is a figure which shows an example of the map matching method by this invention. It is a figure for demonstrating the new map matching method by this invention after generation | occurrence | production of a matching forced leaving command.

Claims (11)

In a method of displaying a map on a mobile communication terminal for navigation,
Receiving GPS coordinate data of the mobile communication terminal from a predetermined GPS receiver;
Displaying the map data stored in the storage means of the mobile communication terminal on a predetermined display means;
Referring to the GPS coordinate data and the map data, displaying the position of the mobile communication terminal on the map data by map matching on the display means; and
Receiving a map matching forced leaving command from a user, and controlling the mobile communication terminal in a map matching standby state in response to the map matching forced leaving command. The step of controlling the mobile communication terminal in a map matching standby state in response to the map matching forced leaving command includes:
2. The map display method for navigation according to claim 1, further comprising performing a route re-search based on a current position where the mobile communication terminal is located. The step of controlling the mobile communication terminal in a map matching standby state in response to the map matching forced leaving command includes:
Including the step of excluding road data of the map data currently being map-matched from map matching candidates and displaying the position of the mobile communication terminal on the map data by re-map matching on the display means. 2. The map display method for navigation according to claim 1, wherein the navigation map is displayed. The step of controlling the mobile communication terminal in a map matching standby state in response to the map matching forced leaving command includes:
2. The navigation map display method according to claim 1, further comprising the step of displaying the GPS coordinate data as a position of the mobile communication terminal on the map data and performing remap matching on the display means. The step of displaying the map data stored in the storage means of the mobile communication terminal on a predetermined display means,
Combining the vector data for displaying the map data on the display means,
2. The navigation map display method according to claim 1, wherein the vector data includes one or more of linear data, text data, and polygon data. The step of displaying the position of the mobile communication terminal on the map data by map matching on the display means,
A step of assigning a weight value according to a criterion selected for each of one or more road data existing on the displayed map data, and the mobile communication terminal to the one road data to which the highest weight value is assigned. 2. The map display method for navigation according to claim 1, further comprising the step of performing map matching so that the position of the map is determined. The selected criterion is movement route information of the mobile communication terminal,
The step of assigning a weight value according to a selected criterion to each of one or more road data existing on the displayed map data,
7. The navigation map display method according to claim 6, further comprising: assigning a highest weight value to road data previously map-matched based on the travel route information. The selected criterion is distance information from the GPS coordinate data,
The step of assigning a weight value according to a selected criterion to each of one or more road data existing on the displayed map data,
7. The map display method for navigation according to claim 6, further comprising: assigning a highest weight value to road data closest to the GPS coordinate data based on the distance information. The selected criterion is the current state information of the road data,
The step of assigning a weight value according to a selected criterion to each of one or more road data existing on the displayed map data,
7. The map display method for navigation according to claim 6, further comprising: assigning a highest weight value to road data that the user can optimally move based on the current state information.   10. A computer-readable recording medium having recorded thereon a program for executing the method according to any one of claims 1 to 9. In the map display system for navigation,
An interface module for receiving GPS coordinate data of a mobile communication terminal from a predetermined GPS receiver;
A display control module for displaying the map data stored in the storage means of the mobile communication terminal on a predetermined display means;
A map matching module for displaying the position of the mobile communication terminal on the displayed map data by map matching on the display means;
A navigation map comprising: an operation control module for controlling the mobile communication terminal in a map matching standby state in response to the map matching forced leave command when a map matching forced leave command is received from a user; Display system.

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