KR20070028623A - Method for correcting distortion in navigation apparatus and navigation apparatus thereof - Google Patents

Abstract

A navigation device and a distortion correcting method thereof are provided to reduce a loss of received data in a dedicated short rage communication by compensating for the distortion of the received data. A navigation device includes a memory(25), first and second RF(Radio Frequency) units(27,28), and a controller(24). The memory stores at least one POI(Position Of Interest) data and a correction program, which is used for correcting distorted POI data. The first and second RF units receive arbitrary POI data from a coordinator through a DSRC(Dedicated Short Range Communication) scheme. The coordinator provides the POI data. The controller determines whether the POI data is distorted. If the POI data is distorted, the controller overlaps the received POI data with each other by using the correction program, so that the distortion in the POI data is corrected.

Description

Method for correcting distortion in navigation apparatus and navigation apparatus thereof

1 is an overall block diagram illustrating a navigation device having a distortion correction function according to an embodiment of the present invention.

FIG. 2 is a block diagram illustrating a navigation device mounted on the vehicle of FIG. 1. FIG.

3 is a block diagram for explaining in detail the control unit of FIG.

4 is a flowchart illustrating a distortion correction method in a navigation apparatus according to an embodiment of the present invention.

5 is a block diagram illustrating a navigation device having a distortion correction function according to another embodiment of the present invention.

FIG. 6 is a block diagram for describing the control unit of FIG. 5 in detail. FIG.

7 is a flowchart illustrating a distortion correction method in a navigation apparatus according to another embodiment of the present invention.

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

10: GPS satellite 20: navigation device

30: feature 40: coordinator

The present invention relates to a method for correcting distortion in a navigation device and a navigation device thereof, and more particularly, to a navigation device capable of performing correction on a distorted interest data when there is a distortion in the interest data received through a near field communication method. A distortion correction method and a navigation apparatus thereof.

In general, a navigation device may provide a user with various kinds of information to help driving, such as informing a user of the current location of a vehicle, providing an optimal route to a desired destination, and guiding a driver according to the route. Device.

Of these, the most basic function is navigation technology that accurately determines the current position of the vehicle. Typically, GPS (global positioning system) and DR (dead reckoning) methods are used to measure the current position of the vehicle in the vehicle navigation system.

GPS (Global Positioning System) is a global positioning system using 24 satellites that operate at an altitude of about 20,183 km.It receives radio waves from satellites that know the exact position and observes the time required for the observation points. Satellite navigation system to get the location. Accordingly, the position measuring apparatus using the GPS can know the position (x, y, z) and the time (t) of the mobile body (for example, the vehicle) equipped with the GPS receiver.

The DR (Dead Reckoning) method is a navigation technology that can find out the magnetic position and direction of travel without external help using inertial sensors. In this way, the inertial sensor (also called DR sensor) used in the DR method includes a sensor for measuring a mileage (for example, a speedometer, a odometer, an accelerometer, etc.) and a sensor for measuring a rotation angle (for example, a geomagnetic sensor and a gyro). Etc.).

Such a navigation device not only corrects a signal received from a GPS through a DR method, but also corrects information on a current location and displays it on an electronic map when GPS data is not received.

However, the navigation device has a problem in that it cannot receive data properly from the outside due to disturbances (electrical noise) that may occur during wireless communication, obstacles caused by obstacles, or impossibility of transmitting and receiving signals by shielding in the vehicle.

In addition, the navigation device needs to download and update the desired geographic information through connection with a server that provides the updated geographic information when the geographic information is required to be updated, or purchase and install a recording medium on which the updated geographic information is recorded. There is a problem in that a communication fee or a purchase cost, time, and effort of a recording medium according to a communication connection must be wasted.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above problem, and to correct the distorted received data that may occur during short-range wireless communication with the coordinator providing the interest data, thereby reducing the loss of the received data. have.

In addition, another object of the present invention is to perform a short-range wireless communication with the coordinator providing the interest data while driving, so that the driver can easily and conveniently obtain the desired information.

A navigation device having a distortion correction function according to an embodiment of the present invention for achieving the above object comprises a correction program for correcting at least one interest data and the distorted interest data of the interest data received from the outside. First and second RF units for receiving arbitrary interest data through a short-range wireless communication scheme from a memory to store and a coordinator providing interest data, and received by the first and second RF units, respectively. The controller may determine whether the interest data is distorted, and if the received interest data has distortion, the controller may perform correction on the distorted interest data by overlapping the received interest data through a correction program stored in the memory. It is characterized by including.

Preferably, when the controller is in the short range wireless communication section with the coordinator, the control unit receives a data of interest from the coordinator through the first and second RF units, respectively, and the interest received by the first RF unit. A determination unit that determines whether the data and the interest data received by the second RF unit are distorted, and when the determination result of the determination unit has distortion in the interest data received by the first and second RF units, And correcting the distorted interest data by overlapping the received interest data, and storing the corrected interest data in a memory.

More preferably, the correction performing unit may include an interest data processor configured to store interest data without distortion in a memory when any one of the received interest data is normal interest data, a determination result of the determination unit, Each of the received interest data is a normal interest data, characterized in that it comprises a communication blocker for blocking communication with the coordinator.

Even more preferably, the short range wireless communication method adopts any one of the IEEE802.15.4 method, the Bluetooth method, the Infrared Data Association (IRDA) method, and the RF (Radio Frequency) method.

In addition, the distortion correction method in a navigation device according to another embodiment of the present invention, in the distortion correction method in a vehicle-mounted navigation device, the first and second RF of interest data transmitted from the coordinator for providing the interest data A second step of receiving each of the received data through the unit; a second step of determining whether the interest data received through the first step is distorted; and a result of the determination of the second step, wherein the received interest data has distortion And performing a correction on the distorted interest data by overlapping the received interest data, respectively.

Preferably, the third step is an interest data processing step of storing interest data without distortion in the memory when any one of the received interest data is normal interest data, as a result of the determination of the second step; As a result of the determination of the step, if any one of the received interest data is normal interest data, characterized in that it comprises a communication blocking step of blocking communication with the coordinator.

More preferably, after the third step, if the execution of the interest data stored in the memory is requested, the method further includes the step of reflecting the interest data in the geographic information on the screen to display or output through the speaker It is done.

In addition, the navigation device having a distortion correction function according to another embodiment of the present invention is a memory for storing at least one interest data and a correction program for performing correction for the distorted interest data of the interest data received from the outside And an RF unit for receiving arbitrary interest data from a coordinator providing interest data through a short range wireless communication method, and determining whether the interest data received by the RF unit is distorted interest data, and And determining that the received interest data is distorted interest data, and correcting the distorted interest data through a phase delay with the interest data re-received from the coordinator.

Preferably, when the controller is in a short range wireless communication section with the coordinator, the control unit receives the interest data from the coordinator through the RF unit, and whether the interest data received by the RF unit is distorted interest data. And a decision unit for determining whether the interest data received according to the determination result of the determination unit is distorted interest data, and after a predetermined time has elapsed, a phase delay with the interest data re-received from the coordinator. And performing a correction and storing the corrected interest data in a memory.

More preferably, the correction performing unit may include an interest data processor configured to store the received interest data in a memory when the received interest data is normal interest data, and the determined interest data is normal. If the data of interest, characterized in that it comprises a communication blocker for blocking communication with the coordinator.

Even more preferably, the short range wireless communication method adopts any one of the IEEE802.15.4 method, the Bluetooth method, the Infrared Data Association (IRDA) method, and the RF (Radio Frequency) method.

In addition, the distortion correction method in a navigation device according to another embodiment of the present invention, in the distortion correction method in a navigation device mounted on a vehicle, receiving the interest data transmitted from the coordinator for providing the interest data through the RF unit; A first step, a second step of determining whether the interest data received by the first step is distorted interest data, and as a result of the determination of the second step, the received interest data is distorted interest data, And performing a correction on the distorted interest data through a phase delay with the interest data re-received from the coordinator.

Preferably, the third step includes the interest data processing step of storing the received interest data in a memory when any one of the received interest data is normal interest data. As a result of the determination, if the received interest data is normal data, it characterized in that it comprises a communication blocking step of blocking communication with the coordinator.

More preferably, after the third step, if the execution of the interest data stored in the memory is requested, the method further includes the step of reflecting the interest data in the geographic information on the screen to display or output through the speaker It is done.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

A navigation apparatus having a distortion correction function according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3.

1 is an overall block diagram illustrating a navigation apparatus having a distortion correction function according to an embodiment of the present invention, FIG. 2 is a block diagram illustrating a navigation apparatus mounted in the vehicle of FIG. 1, and FIG. It is a block diagram for demonstrating the control part of FIG. 2 in detail.

Referring to FIG. 1, the navigation device 20 having a distortion correction function according to the present invention performs a navigation function using position coordinates received from at least one GPS satellite 10, and provides interest data. If the coordinator 40 and the short-range wireless communication section is in the interest data is received through the short-range wireless communication method. At this time, the coordinator 40 is mounted on the feature (for example, building, gas station, toll gate, parking lot, etc.) 30, the information of the feature 30 (for example, POI information), MP3 file, Stores data of interest, including text, images, and the like. Accordingly, when the vehicle on which the navigation device 20 is mounted enters a short range wireless communication section with the coordinator 40 while driving, the interest data provided by the coordinator 40 is received.

Here, the point of interest (POI) information includes the location name and coordinates of the important point, the location name of the important point refers to public institutions, schools, department stores, cathedrals, parks, fast food restaurants, markets, restaurants. In the present embodiment, the POI information is limited to the location name of the important point, but the present invention is not limited thereto.

In the present exemplary embodiment, the navigation apparatus 20 having the above-described distortion correction function is described as being mounted on a vehicle. However, the present invention is not limited thereto. And portable navigation-only terminals).

When the navigation device 20 enters a short-range wireless communication section of the coordinator 40 that provides interest data while basically performing a navigation function of receiving a current position coordinate of the vehicle from the GPS satellite 10 and displaying it on the driving route. Receives the interest data transmitted from the coordinator 40 and the coordinator 40 through the near field communication. In this case, when there is distorted interest data among the received interest data, the navigation device 20 corrects the distorted interest data through a pre-stored correction program.

In the present embodiment, the near field communication method may adopt any one of the IEEE802.15.4 method, the Bluetooth method, the Infrared Data Association (IRDA) method, and the RF (Radio Frequency) method, but adopts ZigBee, which is IEEE802.15.4b. This is preferred.

First, referring to FIG. 2, a navigation device 20 having a distortion correction function according to an exemplary embodiment of the present invention may include a key input unit 21, a GPS receiver 22, a data converter 23, and a controller ( 24, memory 25, display section 26, first RF section 27, second RF section 28, first antenna (not shown), second antenna (not shown), and the like. Include.

Here, the memory 25 may include a correction program for correcting the distorted interest data among geographic information necessary for performing a navigation function, at least one interest data, and interest data received through a short range wireless communication scheme. Saving.

In addition, the memory 25 stores an operation program and a system program of the control unit 24. The operation program and the system program are usually stored in a ROM area included therein and can be erased as necessary. Electrically erasable ROMs include EEPROM and flash memory. The memory 25 also includes a RAM for temporarily storing data generated during execution of various operation programs.

The control unit 24 divides the first control unit (not shown) for performing the navigation function and the second control unit (not shown) for performing the correction function on the interest data received through the short-range wireless communication method to perform each function. In this embodiment, the first control unit and the second control unit are integrated to perform not only a navigation function but also a correction function.

The controller 24 controls the overall operation of the navigation device 20 and simultaneously corrects the distorted interest data among the interest data received in the near field communication with the coordinator 40 providing the interest data. Then, control of various components provided is performed.

In more detail, the controller 24 receives the interest data through the first and second RF units 27 and 28, respectively, and determines whether there is any distortion in the received interest data. When there is a distortion in the data of interest, the correction program stored in the memory 25 overlaps the received data of interest so as to perform correction on the distorted data of interest, and when any of the received data of interest does not have any distortion. Undistorted interest data is stored and managed in the memory 25.

The key input unit 21 inputs a command for searching the geography of a specific position (for example, the current position of the vehicle, an arbitrary point, a position on the driving route, etc.) by operating a button key provided in the navigation device 20. Receive.

In the present exemplary embodiment, the key input unit 21 is limited to a button key. However, the present invention is not limited thereto, and the key input unit 21 may be implemented by using a touch panel, a light pen, a rerot control device, and the like which input a command by touching a key or a menu displayed on the screen. It is possible.

In addition, the key input unit 21 receives a command required for setting so that the driver can receive the desired interest data among the interest data transmitted from the coordinator 40 through the near field communication while driving.

In the present embodiment, it is described that the command is input through the key input unit 21. However, the present invention is not limited thereto, and a command for searching for a specific position or a command required for setting interest data may be input by a driver. .

When the GPS receiver 22 transmits a position measurement signal to the GPS satellite 10, the GPS coordinates of the point where the vehicle on which the navigation device 20 is mounted are located from at least one GPS satellite 10 that receives the transmitted signal (eg, For example, coordinates including latitude, longitude, etc.) are received. At this time, the navigation device 20 receiving the GPS coordinates displays the POI information and the geographic information corresponding to the GPS coordinates on the screen so that the current location of the driver can be confirmed.

The data converting section 23 converts information received from the outside or information requiring processing into suitable data. In particular, the data converter 23 converts the data of interest received from the coordinator 40 into suitable data through a near field communication method.

The first RF unit 27 and the first antenna (not shown) are controlled by the control unit 24, and generally perform a role of receiving data of interest from the coordinator 40. Omit. In addition, the first RF unit 27 converts the radio signal received through the first antenna into a desired signal and outputs the converted signal.

Similarly, the second RF unit 28 and the second antenna (not shown) are controlled by the control unit 24, and serve to receive data of interest from the coordinator 40. In addition, the second RF unit 28 converts the radio signal received through the second antenna into a desired signal and outputs it.

The display unit 26 outputs information on the screen according to the control signal output through the control unit 24. In the present embodiment, the operation guidance, the operation menu, the display of the operation keys, the display of the route up to the guidance point set according to the driver's request, the guidance diagram according to the driving route, etc. are displayed on the screen. In particular, the interest data received through the near field communication method is reflected and displayed on the screen.

Referring to FIG. 3, the control unit 24 will be described in more detail. The control unit 24 includes a navigation execution unit 24a, a reception data processing unit 24b, a determination unit 24c, and a correction execution unit 24d. ), A communication interrupter 24e, an interest data processor 24f, and the like.

The navigation performing unit 24a performs various arithmetic processing such as navigation processing based on the information input through the key input unit 21, and outputs the result on the screen. That is, the navigation performing unit 24a searches for a route from the current position received from the GPS satellite 10 to the destination, and guides driving to the searched route.

The reception data processing unit 24b receives the interest data through the first and second RF units 27 and 28, respectively, when entering the short range wireless communication section of the coordinator 40 providing the interest data. In this case, the reception data processing unit 24b may perform the short range wireless communication in accordance with a signal-to-noise ratio (SNR) included in the data of interest received by the first and second RF units 27 and 28. You can anticipate when you will leave.

The determination unit 24c determines whether there is distortion in the interest data received by the reception data processing unit 24b, respectively. In this case, when any one of the received interest data has no distortion, the non-distorted interest data is stored in the memory 25 without undergoing a correction procedure.

The correction performing unit 24d stores the correction log stored in the memory 25 when there is a distortion in the interest data received by the first and second RF units 27 and 28 as a result of the determination by the determination unit 24c. The distorted interest data are corrected by overlapping the interest data received by the first and second RF units 27 and 28 through the RAM, respectively.

For example, when the interest data is divided into the first packet data to the tenth packet data from the coordinator 40 and transmitted, the interest data (for example, the first data) is transmitted through the first RF unit 27 due to a communication failure. When receiving the interest data (eg, receiving the fifth packet data to the tenth packet data) through the second RF unit 28 and receiving the packet data up to the seventh packet data, the distortion of the received interest data is reduced. If there is distortion in the received interest data, the received interest data is superimposed to correct the distorted interest data, thereby correcting the corrected interest data (eg, the first packet data). In the 10 th packet data). The interest data generated in this way is stored in the memory 25. Accordingly, the interest data required by the driver can be obtained easily and conveniently.

When the communication blocker 24e determines that any one of the interest data among the interest data received by the first and second RF units 27 and 28 has no distortion as a result of the determination by the determination unit 24c, the near field communication is performed. Even if the navigation device 20 located in the section serves to block communication with the coordinator 40.

If the interest data processing unit 24f has no distortion in any of the interest data among the interest data received by the first and second RF units 27 and 28 as a result of the determination by the determination unit 24c, there is no distortion. The data of interest are stored in the memory 25.

In addition, when the interest data processor 24f is requested to execute the interest data received without distortion from the driver or the interest data correcting the distorted interest data, the interest data processor 24f also executes the requested interest data. In this case, when the received interest data is POI information, the received interest data is reflected on the corresponding part of the geographic information displayed on the screen, and when the received interest data is an MP3 file, the corresponding music is output through the speaker, and the received interest If the data is an image file, the data is reflected in the corresponding part of the geographic information displayed on the screen. If the received interest data is the text, the data is reflected in the corresponding part of the geographic information displayed on the screen.

4 is a flowchart illustrating a distortion correction method in a navigation apparatus according to another exemplary embodiment of the present invention.

Referring to FIG. 4, a distortion correction method of the navigation device applied to FIGS. 2 and 3 is as follows.

The controller 24 has already stored the correction program for correcting the distorted interest data among the at least one interest data and the interest data received through the short range wireless communication method in the memory 25 (S101). . In addition, the memory 25 has already stored various geographic information necessary to perform a navigation function.

Next, the reception data processor 24b of the controller 24 determines whether the interest data is received through the first and second RF units 27 and 28, respectively (S103).

As a result of the determination in step S103, when the interest data is not received through the first and second RF units 27 and 28, the standby state is maintained for a predetermined time.

As a result of the determination in step S103, when the interest data is received through the first and second RF units 27 and 28, respectively, the determination unit 24c of the controller 24 determines whether the received interest data has distortion. Determine (S105).

As a result of the determination in step S105, when there is no distortion in each of the received interest data, the interest data processing unit 24f of the controller 24 stores the interest data without distortion in the memory 25 (S106).

Next, the communication blocker 24e of the control unit 24 cuts off the communication with the coordinator 40 providing the interest data despite being in the short range wireless communication section (S108), and the subsequent process moves to step S111 described later. do.

As a result of the determination in step S105, when there is distortion in each of the received interest data, the correction performing unit 24d of the controller 24 performs the interest data received through the first RF unit 27 and the second RF unit 28. In step S107, the data of interest received through the data is superimposed on the distorted data of interest.

Next, the interest data processor 24f stores the corrected interest data in the memory 25 (S109).

Next, the interest data processor 24f determines whether execution of the interest data stored in the memory 25 is requested (S111). As a result of the determination in step S111, if the execution of the interest data is not requested, the process ends.

As a result of the determination in step S111, when the execution of the interest data is requested, the interest data processing unit 24f executes the requested interest data (S113) to reflect the geographic information displayed on the screen or output music through the speaker. do. At this time, the requested interest data are POI information, MP3 file, image file, text, and the like.

By doing so, it is possible to reduce loss of received interest data due to obstacles that may occur in near field communication.

Referring to FIG. 5, the navigation device 20 having the distortion correction function according to another embodiment of the present invention includes a key input unit 21, a GPS receiver 22, a data converter 23, And a control unit 24, a memory 25, a display unit 26, an RF unit 27, an antenna (not shown), and the like.

Since the components of the navigation apparatus 20 having the distortion correction function according to another embodiment of the present invention are the same as those of the navigation apparatus 20 having the distortion correction function according to the embodiment of the present invention, the configuration Omit the description. However, components that are not described in the above embodiments and components that perform functions different from those of the above embodiments will be described.

In the description of this embodiment, the details already described in the previous embodiment are omitted to avoid duplication, and the same reference numerals are used for the same or similar components as the components of the previous embodiment.

The controller 24 controls the overall operation of the navigation device 20 and simultaneously corrects the distorted interest data among interest data received during short-range wireless communication through the navigation device 20 according to the present invention. . Then, control of various components provided is performed.

In more detail, the controller 24 receives the interest data through the RF unit 27, determines whether the received interest data is normal data, and determines whether the received interest data is normal data. After the elapsed time, correction of the distorted interest data is performed through a phase delay between the interest data received from the coordinator 40 and the minimum received interest data.

The RF unit 27 is controlled by the control unit 24 and generally serves to receive data of interest from the coordinator 40, and thus a detailed description thereof will be omitted. In addition, the RF unit 27 converts the radio signal received through the antenna into a desired signal and outputs it.

Referring to FIG. 6, the control unit 24 will be described in more detail. The control unit 24 includes a navigation execution unit 24a, a reception data processing unit 24b, a determination unit 24c, and a correction execution unit 24d. ), A communication interrupter 24e, an interest data processor 24f, and the like.

Since the navigation performer 24a has already been described in the foregoing embodiment, a detailed description thereof will be omitted.

The reception data processor 24b receives the interest data through the RF unit 27 when entering the short-range wireless communication section of the coordinator 40 providing the interest data. In this case, the reception data processor 24b may predict in advance the time of departure from the short-range wireless communication interval according to the SNR included in the interest data received by the RF unit 27.

The determination unit 24c determines whether or not there is distortion in the interest data received by the reception data processing unit 24b. Here, when there is no distortion in the received interest data, the received interest data is stored in the memory 25 without undergoing a correction procedure. Thereafter, the communication blocker 24e blocks communication with the coordinator 40 providing the data of interest.

The correction performing unit 24d determines that the data of interest received by the RF unit 27 is distorted by the RF unit 27 through the correction program stored in the memory 25 when the determination result of the determination unit 24c determines that the data of interest are received. The distorted interest data is corrected through a phase delay with the interest data re-received from the coordinator 40 at predetermined time intervals.

For example, when the interest data is divided into the first packet data to the tenth packet data from the coordinator 40 and transmitted, the interest data received through the RF unit 27 due to a communication failure (for example, It is determined whether or not there is distortion in the first packet data up to the seventh packet data, and if there is a distortion, the interest data (for example, first received) received through the RF unit 27 at a predetermined time interval. By correcting the distorted interest data through a phase delay with 2 packet data up to the 10th packet data, the corrected interest data (eg, interest data composed of the 10th packet data in the 1st packet data) is obtained. Will be created. The interest data generated in this way is stored in the memory 25.

7 is a flowchart illustrating a distortion correcting method in a navigation apparatus according to another embodiment of the present invention.

A distortion correction method of the navigation apparatus applied to FIGS. 5 and 6 will now be described with reference to FIG. 7.

The controller 24 may include a memory program that corrects various types of geographic information necessary to perform a navigation function, at least one interest data, and a distorted interest data among interest data received through a short range wireless communication scheme. It is already stored in the state 25) (S201).

Next, the reception data processor 24b of the controller 24 determines whether the interest data is received through the RF unit 27 (S203).

As a result of the determination in step S203, when the interest data is not received through the RF 27, the standby state is maintained for a predetermined time.

As a result of the determination in step S203, when the interest data is received through the RF 27, the received data processor 24b stores the received interest data in the memory.

Next, the determination unit 24c of the controller 24 determines whether the received interest data is distorted interest data (S207).

As a result of the determination in step S207, if the received interest data is not distorted interest data, the communication blocker 24e blocks communication with the coordinator (S208).

As a result of the determination in step S207, when the received interest data is distorted interest data, the reception data processor 24b re-receives the interest data from the coordinator 40 at a predetermined time interval (S209).

Next, the correction performing unit 24d of the controller 24 corrects the distorted interest data through a phase delay between the received interest data and the initially received interest data (S211).

Next, the interest data processor 24f updates the corrected interest data to the memory 25 (S213).

Next, the interest data processor 24f determines whether execution of the interest data stored in the memory 25 is requested (S215).

As a result of the determination in step S215, if the execution of the interest data stored in the memory 25 is not requested, the process ends.

As a result of the determination in step S215, when the execution of the interest data stored in the memory 25 is requested, the interest data processor 24f executes the requested interest data (S217).

By doing so, not only the interest data required by the driver can be easily and conveniently acquired, but also the interest data received in the short-range wireless communication can be immediately reflected while performing the navigation function.

The present invention is not limited to the embodiments described above, and various modifications and changes can be made by those skilled in the art, which are included in the spirit and scope of the present invention as defined in the appended claims.

According to the present invention as described above, if there is a distortion in the received interest data that may occur in the near field communication, the distortion of the received interest data is corrected, thereby reducing the loss of the received data during the near field communication. That has an excellent effect.

In addition, according to the present invention as described above, even if the geographic information needs to be updated, a separate communication fee and time by receiving interest data through a short-range wireless communication method in a running feature without being connected to a server providing the geographic information. And reduced waste of effort.

In addition, according to the present invention as described above, when the coordinator providing the interest data and the short-range wireless communication section enter, there is an effect that the driver may easily and conveniently obtain the interest data required by the driver.

Claims (14)

A memory for storing at least one interest data and a correction program for performing correction on the distorted interest data among the interest data received from the outside; First and second RF units for receiving arbitrary interest data from a coordinator providing interest data through a short range wireless communication scheme; It is determined whether the interest data received by the first and second RF units are distorted, and when the received interest data is distorted, the received interest data is superimposed through the correction program stored in the memory. And a controller for correcting the distorted ROI. The method of claim 1, wherein the control unit A reception data processor configured to receive data of interest from the coordinator through the first and second RF units, respectively, when the coordinator is in a short range wireless communication section; A determination unit determining whether the interest data received by the first RF unit and the interest data received by the second RF unit are distorted; As a result of the determination of the determination unit, if there is distortion in the interest data received by the first and second RF units, the received interest data is superimposed to correct the distorted interest data, respectively, and the corrected interest And a correction performing unit for storing data in a memory. The method of claim 2, wherein the correction performing unit A result of the determination unit, if any one of the received interest data is normal interest data, the interest data processor for storing the distortion-free interest data in the memory; And a communication blocker for blocking communication with the coordinator if any one of the received interest data is normal interest data as a result of the determination of the determination unit. The method of claim 1, wherein the short range wireless communication scheme Navigation apparatus having a distortion correction function characterized in that any one of the IEEE802.15.4 method, Bluetooth method, Infrared Data Association (IRDA) method, RF (Radio Frequency) method is adopted. In the distortion correction method in a navigation device mounted on a vehicle, A first step of receiving interest data transmitted from the coordinator for providing interest data through the first and second RF units, respectively; A second step of determining whether the interest data received through the first step is distorted; And a third step of performing correction on the distorted interest data by overlapping the received interest data, when the received interest data has a distortion as a result of the determination of the second step. Distortion correction method. The method of claim 5, wherein the third step The interest data processing step of storing the interest data without distortion in the memory when any one of the received interest data is normal interest data as a result of the determination of the second step; And a communication blocking step of blocking communication with the coordinator when any one of the received interest data is normal interest data as a result of the determination of the second step. The method of claim 6, wherein after the third step, And requesting execution of the interest data stored in the memory to reflect the corresponding interest data in the geographic information on the screen or output the same through the speaker. A memory for storing at least one interest data and a correction program for performing correction on the distorted interest data among the interest data received from the outside; An RF unit for receiving arbitrary interest data from a coordinator providing interest data through a short range wireless communication method; It is determined whether the interest data received by the RF unit is distorted interest data. If the received interest data is distorted interest data, the phase delay with the interest data re-received from the coordinator is determined. And a controller for correcting the distorted data of interest. The method of claim 8, wherein the control unit A reception data processor for receiving interest data from the coordinator through the RF unit when the coordinator is in a short range wireless communication section; A determination unit determining whether the interest data received by the RF unit is distorted interest data; If the received interest data is distorted interest data according to the determination result of the determination unit, correction of the distorted interest data is performed through phase delay with the interest data re-received from the coordinator after a predetermined time elapses. And a correction performing unit for storing the data of interest in a memory. The method of claim 9, wherein the correction performing unit An interest data processor configured to store the received interest data in a memory when the received interest data is normal interest data as a result of the determination of the determination unit; And a communication blocker for blocking communication with the coordinator when the received interest data is normal interest data. The method of claim 8, wherein the short range wireless communication scheme is Navigation apparatus having a distortion correction function characterized in that any one of the IEEE802.15.4 method, Bluetooth method, Infrared Data Association (IRDA) method, RF (Radio Frequency) method is adopted. In the distortion correction method in a navigation device mounted on a vehicle, A first step of receiving the interest data transmitted from the coordinator for providing the interest data through the RF unit; A second step of determining whether the interest data received by the first step is distorted interest data; A third step of performing correction on the distorted interest data through phase delay with the interest data re-received from the coordinator when the received interest data is distorted interest data as a result of the determination of the second step; Distortion correction method in a navigation device, characterized in that. The method of claim 12, wherein the third step is The interest data processing step of storing the received interest data in a memory when any one of the received interest data is normal interest data as a result of the determination of the second step; And a communication blocking step of blocking communication with the coordinator when the received interest data is normal data as a result of the determination of the second step. The method of claim 13, wherein after the third step, And requesting execution of the interest data stored in the memory to reflect the corresponding interest data in the geographic information on the screen or output the same through the speaker.

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