KR100337482B1 - Navigation system and method - Google Patents

Abstract

The present invention is a navigation system and method thereof. The vehicle information retrieval unit receives the vehicle state information and the GPS positioning information and outputs it, and receives the response signal to output the voice and video types. The wireless communication terminal receives the location information and the state information of the vehicle and transmits it wirelessly, and outputs a response signal thereof to the vehicle information retrieval unit, and the wireless communication network includes a base station and a switch having standard location information, and interfaces the transmission and reception of the wireless signal. do. In addition, the navigation information server stores the map information, outputs a DGPS signal for correcting the location information when there is a deviation between the provided location information and the standard location information of the base station, and route data according to the current location information and the destination information. And map information according to the route data is read and provided to the vehicle information search unit, and the vehicle state information server stores state information of the vehicle. As a result, users can save the cost, reduce the size, continuously update the information they want, and replace the memory with the navigational digital maps and CD-ROM drivers and their associated devices. You can keep an eye on the condition of the emergency to quickly respond to emergencies.

Description

Navigation system and method thereof

The present invention relates to a navigation system and a method thereof, and more particularly, to wirelessly transmit GPS positioning information and vehicle state information through a mobile communication terminal, to store map information according to the transmitted positioning information, and to advance the vehicle. Accordingly, the present invention relates to a navigation system using a mobile communication network for outputting image information and audio information, and a method thereof.

Currently, various types of moving objects such as ships, aircrafts, and automobiles are equipped with a GPS positioning device for checking a current position and moving speed or determining a moving path. The GPS positioning device receives radio waves representing latitude, longitude, altitude, etc. from a plurality of satellites belonging to the Global Positioning System (hereinafter referred to as GPS), calculates the current position of the moving object, and then calculates the current position of the moving object. Displays the map information included with the driver.

That is, a typical vehicle navigation device (or vehicle navigation system) has a distance to a GPS communication satellite on the map displayed on the screen, the current moving speed of the moving object, a path set before the driver travels, and an optimal path to the destination. It provides the driver with various information necessary for driving such as displaying a back.

1 is a view for explaining a conventional vehicle navigation system.

As shown in FIG. 1, the position of the vehicle is received from the GPS communication satellite through the GPS antenna 10 to calculate the current position of the vehicle, and a numerical map corresponding to the position is provided on the CD-ROM 20. ) Is displayed on the LCD monitor 80. Since the digital map of the road as well as the attributes of the road are stored in advance, the microprocessor 50 controls the CD-ROM 20 to extract a map corresponding to the position of the vehicle. The driver 22 is driven, interpreted by the decoder 24, and the extracted data is processed by the graphic processor 60 to produce a map graphic, which is converted into a signal suitable for a display device, and then output to the monitor 80. When the map is displayed on the monitor 80, the coordinates of the position of the vehicle are converted and displayed on the road displayed on the monitor 80.

Of course, the route calculation or guidance is a program contained in the BIOS ROM (40) is operated and processed to track the road property data read in advance to search the route to the destination, and guide according to the data. At this time, the BIOS ROM 40 may include a real-time driving system, a route search program, a route display program, a destination setting program, a zooming / reducing program, a scroll program, a route guide program, a menu display program, a GPS receiving program, a map matching program, and a setting program. It includes.

The problem with this conventional navigation system, however, is that all users must have pre-stored numerical map data and CD-ROM drivers and decoder circuitry for reading them, and route calculations must also be performed on all microprocessors owned by drivers. If you want to modify the roads of the map or modify the attributes of the map, you have to replace the CD-ROM that all users have, and you also need to replace the programs stored in the BIOS.

Thus, when the map information needs to be upgraded, complicated procedures are required and expensive components such as the cost of modification or the CD-ROM and the CD-ROM driver and decoder for driving it must be used.

In addition, the use of such a component has the disadvantage that the cost of the vehicle navigation device is expensive and its size is also increased, and also does not use a communication network has a problem that all information must be operated by the user.

In addition, although the driver is currently driving, the driver has to pay attention to the information displayed through the navigation device in order to obtain the current location information.

The technical problem of the present invention is to solve such a conventional problem, an object of the present invention can facilitate the use of the vehicle navigation device, navigation system using a mobile communication network that can improve the search speed of location information To provide.

Another object of the present invention is to provide a navigation method using a navigation system using the mobile communication network.

1 is a view for explaining a conventional vehicle navigation system.

2 is a view for explaining a navigation system according to an embodiment of the present invention.

FIG. 3 is a diagram for describing a vehicle information search unit of FIG. 2 in detail.

4 is a flowchart of a navigation control method according to an embodiment of the present invention.

FIG. 5 is a detailed flowchart of the calculation process of the current position shown in FIG. 4.

6 is a detailed flowchart of a destination input process shown in FIG. 4.

7 is a detailed flowchart of a menu processing process according to the code illustrated in FIG. 6.

8 is a detailed flowchart of the route guidance process shown in FIG. 4.

9 is a detailed flowchart of the user information retrieval process shown in FIG.

10 is a detailed flowchart of the vehicle information processing process shown in FIG. 4.

FIG. 11 is a detailed flowchart of the DGPS processing process illustrated in FIG. 4.

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

10: GPS antenna 20: CD-ROM

22: CD-ROM Driver 24: Decoder

40: BIOS ROM 50: Microprocessor

60: graphics processor 80: monitor

100: vehicle information search unit 200: wireless communication terminal

300: wireless communication network 400: navigation map server

500: vehicle status information server 110: GPS receiver

120: first interface unit 130: second interface unit

140: data storage unit 150: image signal processing unit

160: voice signal processing unit 170: DRAM

180: control unit

According to an aspect of the present invention, a navigation system includes a key input unit for outputting a signal according to a user's key operation, a GPS antenna for receiving GPS positioning information, and a display of vehicle location information. In a navigation system of a vehicle including a display unit and a speaker for outputting a route guidance and warning broadcast of the vehicle, when the vehicle is diagnosed as an abnormal state or an abnormal symptom by diagnosing state information of the vehicle provided from the electronic control apparatus of the vehicle. A vehicle information search unit for alerting a driver, outputting the vehicle status information and the GPS positioning information, and receiving a response signal and outputting the response signal in an audio and video type; wirelessly receiving the positioning information and the vehicle status information A wireless communication terminal for outputting a response signal thereof to the vehicle information retrieval unit; A wireless communication network for interfacing the transmission and reception of the radio signal, including a base station and an exchanger having information; storing map information, and correcting the location information when there is a deviation between the provided location information and standard location information of the base station. Outputting a DGPS signal, reading route data including node link coordinates and attribute data of a road according to current location information and destination information, and map information according to the route data, respectively, to read the wireless communication network and the wireless communication terminal. A navigation map server provided to the vehicle information retrieval unit via a vehicle; And a vehicle state information server storing state information of the vehicle.

According to another aspect of the present invention, there is provided a navigation method, comprising: a key input unit receiving a user operation signal, and a data storage unit storing map information and state information of a vehicle; And a vehicle information retrieval unit for outputting GPS positioning information, receiving a response signal, and outputting it in an audio and video type, a wireless communication network including a wireless communication terminal, a base station having standard location information, and correcting the positioning information. A navigation map server that outputs a DGPS signal for providing the navigation information, and provides a route data and map information according to the route data to the vehicle information retrieval unit, and a vehicle state information server configured to store state information of the vehicle. A method comprising: (i) determining a vehicle based on GPS positioning information, azimuth information, and moving distance information. Calculating location information; (ii) receiving destination information based on a voice signal or a key manipulation signal of a driver, calculating a calculated route from the current location to a destination, and displaying information on the calculated route; Iii) reading the pre-stored map data based on the current location information and the destination information and guiding a moving route according to the progress of the vehicle; (i) a voice signal or a code and a search command according to the input of the user information search key; Providing the navigation information server to the navigation information server, and searching for the user information for outputting the retrieved information by audio and image; (i) diagnosing the status information of the vehicle and, if the diagnosed status information is checked as abnormal, Making an audio and video alert and recording the vehicle status information to the vehicle status information server; And (iii) correcting the current position of the vehicle by receiving the DGPS signal outputted when there is a deviation between the GPS positioning information and the standard position information of the base station, wherein step (ii) includes: Ii-1) checking whether a driver's voice is input; (Ii-2) if there is a voice input in step (ii-1), storing the voice signal; (Ii-3) if there is no voice input in step (ii-1), checking for the presence or absence of a key input; (Ii-4) processing a menu according to a code when there is a key input in step (ii-3); And (ii-5) checking whether there is a route guidance request.

According to such a navigation system using a mobile communication network and a method thereof, a function of storing an electronic map for guiding a destination in a vehicle comprehensive information retrieval device and searching for a desired destination by a user may be searched through voice recognition and a wireless communication terminal. It improves the convenience of use, search speed and accuracy, and interfaces through the bus of the electronic device in the vehicle, so that the operation state of the vehicle can be checked to facilitate quick response and follow-up in the event of a crisis.

Then, embodiments will be described so that those skilled in the art can easily implement the present invention.

2 is a view for explaining a navigation system according to an embodiment of the present invention.

As shown in FIG. 2, the navigation system according to an exemplary embodiment of the present invention includes a vehicle information search unit 100, a wireless communication terminal 200, a wireless communication network 300, a navigation map server 400, and a vehicle state information server. 500.

The vehicle information retrieval unit 100 receives the positioning information provided from the GPS communication satellite and the state information of the vehicle provided from the vehicle's electronic control unit (hereinafter referred to as ECU) 90 and transmits it to the wireless communication terminal. The display unit 200 receives the map information, the route guidance information, the route guidance voice information, etc., which are its response signals, and displays them on the screen or outputs the audio through the speaker.

The wireless communication terminal 200 receives the location information and the state information of the vehicle from the vehicle information retrieval unit 100 and wirelessly transmits it, and outputs a response signal to the vehicle information retrieval unit 100.

In this case, the wireless communication terminal 200 transmits the vehicle position information and the vehicle state information, or performs the bidirectional communication for receiving map data or route data accordingly, so that the radio communication terminal 200 receives the signal from the calling party during transmission and reception of the signals used for the navigation. When a call to be called is received, the voice message 'Wait for navigation, please wait for a while' or the caller can be called after stopping the navigation. Voice call function, a function can be performed smoothly.

The wireless communication network 300 is a network including a base station and a switch having general standard location information, and provides a wireless interface path between the wireless communication terminal 200, the navigation map server 400, and the vehicle status information server 500.

The navigation map server 400 stores map information, destination information, route information, and the like, and retrieves vehicle information through a direction opposite to the input path of map information corresponding to GPS positioning information input through the wireless communication network 300. Differential Global Positioning System (hereinafter referred to as DGPS), which is provided to the unit 100 and becomes a correction value signal if there is a certain deviation from the provided GPS positioning information and the standard position information of the base station via the corresponding signal. ) To provide more signals to correct the positioning information.

The vehicle state information server 500 stores various state information of running vehicles input via the wireless communication network 300. The state information of the vehicle may be dispatched to an emergency rescue team when an abnormal state occurs in the vehicle. To provide the functionality.

In addition, since the driving state information of the vehicle is stored every predetermined time, even if a contact accident or a life accident of the vehicle in operation occurs, the stored vehicle state information may be used as the driving basis of the vehicle.

3 is a view for explaining the vehicle information search unit shown in FIG. 2 in more detail.

As shown in FIG. 3, the vehicle information search unit 100 may include a GPS receiver 110, a first interface unit 120, a second interface unit 130, a data storage unit 140, and an image signal processing unit 150. ), The voice signal processor 160, the DRAM 170, and the controller 180.

The GPS receiver 110 includes a gyro sensor 112 for detecting azimuth information linked to a traveling direction of the vehicle and a GPS receiver 114 for calculating a current position of the vehicle from a GPS positioning signal received through a GPS antenna. The current position information of the vehicle is output to the first interface unit 120 by correcting the error of the GPS positioning information based on the azimuth information.

The first interface unit 120 is responsible for the key signal and the interface between the controller 180 and the external device, the second interface unit 130 is a vehicle speed sensor signal used to detect the moving distance of the vehicle and the electronic control of the vehicle The vehicle receives information on the current state of the vehicle from the electronic control unit (ECU) and provides it to the first interface unit 120.

The data storage unit 140 stores map and voice data input via the wireless communication terminal 200 and the first interface unit 120.

The image signal processing unit 150 includes an image processing unit 152, a VRAM (Video RAM) 154, and a screen display device 156 to be input via the wireless communication terminal 200 and the first interface unit 120. The map data to be converted is converted into a map image and displayed.

In more detail, the image processor 152 provides the screen display data provided from the controller 180 to the video RAM (VRAM) 154 and outputs the corresponding image map to the screen display device 156 as the vehicle proceeds. do. At this time, the VRAM 154 has a RAM for writing pixel data and a serial access memory for outputting data to the display device, and is an image processing storage device that allows data to be exchanged between the memories.

The voice signal processor 160 performs a voice recognition process on the voice signal input through the wireless communication terminal 200 and outputs the voice signal to the speaker 165, and the speaker 165 transmits a route guidance broadcast or a road that responds to the driving direction of the vehicle. The warning broadcast alerts you when the intersection or bottleneck is entered.

The DRAM 170 stores data when the vehicle information retrieval unit 100 executes, and more specifically, the control unit 180 provides a place to load the system software and user software.

The controller 180 provides the error-corrected positioning information provided from the GPS receiver 110 to the wireless communication terminal 200, stores map information corresponding to the response signal, in the data storage 140, and the vehicle. According to the progress of the reading, the corresponding map data is read and provided to the image signal processing unit 150 to control the display of the map information, and the current state information of the vehicle provided from the second interface unit 130, the wireless communication terminal The control unit 200 stores the current state information of the vehicle in the vehicle state information server 500, and provides an emergency signal to the wireless communication terminal 200 when an emergency occurs.

Hereinafter, the operation of the navigation system using a mobile communication network according to an embodiment of the present invention.

4 is a flowchart illustrating a navigation control method according to an embodiment of the present invention.

As shown in FIG. 4, first, the current position of the vehicle is calculated based on the azimuth signal provided from the gyro sensor and the GPS positioning information input through the GPS antenna (step S100).

Subsequently, receiving the destination information according to the driver's voice signal or the key manipulation signal, the calculated route from the current position to the destination is calculated, and the calculated route information is displayed (step S200).

Based on the current position information calculated in step S100 and the route information to the destination calculated in step S200, the prestored map data is read to guide the moving route according to the progress of the vehicle (step S300).

Subsequently, a voice signal or a code and a search command are provided to the navigation information server according to the input of the user information retrieval key, and the user information which retrieves the retrieved information by voice and image is retrieved (step S400).

Subsequently, the vehicle state information is diagnosed, and when the diagnosed state information is checked as an abnormal state, a voice and video alarm are given to the driver, and the vehicle state information is recorded in the vehicle state information server (step S500).

Subsequently, the current position of the vehicle is corrected by receiving the DGPS signal output when there is a deviation between the GPS positioning information and the standard position information of the base station (step S600).

FIG. 5 is a flowchart for explaining a calculation process of a current position shown in FIG. 4 in more detail.

As shown in FIG. 5, first, GPS location information is received to calculate the current location of the vehicle (step S110), and a map corresponding to the current location stored in the data storage unit is read based on the calculated current location information of the vehicle. (Step S120), it is displayed on the screen display device (Step S130).

Then, the moving distance by the vehicle speed sensor provided from the second interface unit is calculated (step S140), and the azimuth angle by the gyro sensor is calculated (step S150).

Subsequently, the current position of the vehicle is corrected on the map displayed in step S130 by a map matching method based on the moving distance information and the azimuth information of the vehicle calculated in step S150 (step S160).

FIG. 6 is a flowchart for explaining the destination input process illustrated in FIG. 4 in more detail.

As shown in Fig. 6, it is first checked whether there is a voice input of the driver (step S210), and if there is a voice input, the input voice signal is stored (step S215), and if there is no voice input and voice After storing the signal, it is checked whether there is a key input signal through the key input unit (step S220).

When the key input signal is provided from the key input unit in step S220, menu processing according to the code described in detail with reference to FIG. 7 is performed (step S230), and when the key input signal is not provided and the menu processing according to the code is completed. After that, it is checked whether there is a route guidance request (step S240), and if there is no route guidance request, the process proceeds to step S100 of calculating the current position of the vehicle, and if there is a route guidance request, the route is guided. Proceed to step S300.

FIG. 7 is a flowchart for explaining a process of menu processing according to the code shown in FIG. 6 in more detail.

As shown in Fig. 7, first, it is checked whether there is a destination information retrieval request (step S2310), and if there is no destination information retrieval request, the flow advances to step S400, which is a step of retrieving user information, and the destination information retrieval request. If present, the voice signal or code is transmitted to the wireless communication terminal 200 (step S2320), and the destination information is retrieved from the navigation information server 400 via the wireless communication network 300.

Subsequently, the wireless communication terminal 200 receives the voice recognition processing result of the navigation information server 400 (step S2330).

Then, it is checked whether the destination information search is completed (step S2340). If the destination search is not completed, after receiving a voice signal of the detailed guide content (step S2350), the process proceeds to step S200 where the destination is input, and the destination search is performed. If so, the route is calculated to the destination (step S2360).

After the calculated route information is displayed on the screen (step S2370), the flow advances to step S240 in which the presence or absence of the route guidance request shown in FIG. 4 is checked.

FIG. 8 is a flowchart for explaining the route guidance process shown in FIG. 4 in more detail.

As shown in Fig. 8, first, the current position of the vehicle is calculated (step S310), and it is checked whether the path deviates from the path displayed in step S2370 (step S320). (Step S330).

Then, if the route is not deviated and after the rescanning of the route, it is checked whether it is near the intersection of the road (step S340), and if it is near the intersection of the road, the driving direction of the vehicle is driven by voice output such as going straight, left turning and right turning. Voice guidance to the user (step S350), and the driving information according to the driving state of the driver is displayed on the screen (step S360).

Then, in step S340, if it is not near the intersection of the road and the driving information of step S360 is displayed on the screen, it is checked whether it has arrived at the destination (step S370), and if it has not arrived at the destination, the user information is retrieved. In step S400, when arriving at the destination, and after the destination arrival guidance and route guidance is released, the process proceeds to step S400 to search for user information.

FIG. 9 is a flowchart for explaining a user information retrieval process shown in FIG. 4 in more detail.

As shown in Fig. 9, first, it is checked whether the user information search key provided from the key input unit is input (step S410), and when the user information search key is input, the voice signal is stored (step S420), and the voice signal Alternatively, a code and a search command are transmitted to the wireless communication terminal 200 (step S430), and the voice recognition processing result of the navigation information server 400 is received by the wireless communication terminal 200 (step S440).

Subsequently, it is checked whether the search word received through the wireless communication terminal is a desired search word (step S450), and if it is an undesired search word, the feedback is returned to step S420, and if it is a desired search word, the search process result of the navigation information server 400 is followed. Is received at the wireless communication terminal 200 (step S460).

Subsequently, the searched information is displayed on the screen display unit of the image signal processing unit (step S470), and the searched information is voice-guided through the speaker (step S480), and the process proceeds to step S500 for processing the vehicle information.

FIG. 10 is a flowchart for describing the vehicle information processing process illustrated in FIG. 4 in more detail.

As illustrated in FIG. 10, the electronic control unit ECU of the vehicle is diagnosed based on the vehicle bus signal input through the second interface unit 130 (step S510).

Then, it is checked whether or not an abnormal condition has occurred in the vehicle (step S520), and when the vehicle abnormal condition occurs, the current position and information of the vehicle are transmitted to the wireless communication terminal 200 (step S530). At this time, the abnormal state of the vehicle occurs when it is out of the optimum state related to the operation of the vehicle, and the reason for detecting the abnormal state of the vehicle is to identify the responsibility and the problem of personal injury when an accident occurs in the vehicle in the future. It is a kind of driving log or black box of a vehicle.

Subsequently, the driving route of the vehicle is output as a voice through the speaker (step S540), and the alarm screen is displayed on the screen display unit (step S550).

Subsequently, after the alarm screen is displayed and when the vehicle abnormality state of step S520 does not occur, the vehicle driving information is recorded in the data storage device (step S560), and the process proceeds to step S600 where the DGPS process is performed.

FIG. 11 is a flowchart for explaining the DGPS processing process illustrated in FIG. 4 in more detail.

As shown in FIG. 11, it is checked whether the DGSP (Differential Global Positioning System) signal is received from the wireless communication terminal 200 (step S610), and when the DGSP signal is received, the current position of the vehicle is corrected (step S610). S620). At this time, the received DGSP signal is a signal provided from the navigation information server 400 when the deviation of the GSP positioning signal is large. For example, a positioning signal provided from a high altitude GPS communication satellite generates an error of about 100 m depending on the region. To compensate for this, each base station has standard position information about the GPS communication satellite, so that the positioning signal provided from a vehicle is provided. When an error occurs in the data, the navigation information server checks this and provides the DGPS signal to the vehicle information search unit via the wireless communication terminal to correct the position based on the standard position information of the base station.

Then, based on the DGPS signal received through the wireless communication terminal to correct the current position of the vehicle close to the road running, and if there is no reception of the DGPS signal through the wireless communication terminal 200 in step S610 After displaying the current position of (step S630), the feedback to step S100 to calculate the initial current position of the vehicle.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art will be able to variously modify and change the present invention without departing from the spirit and scope of the invention as set forth in the claims below. It will be appreciated.

As described above, according to the present invention, the vehicle information retrieval device has a built-in memory capable of storing map information to store road information around the current location and driving around the destination to provide road information to the driver in real time. have.

In addition, since the map information is stored in the memory, even when the vehicle is turned off at the rest area, the received map data and the route data to the destination remain, thereby reducing the number of data transmission / reception.

In addition, the vehicle can diagnose the current state information of the vehicle at regular time intervals and provide it to the vehicle state information server through the wireless communication terminal, so that even if an emergency occurs in the vehicle, the vehicle is provided with location information and state information of the vehicle. The vehicle status information server can take appropriate measures accordingly, and can be used as an appropriate data for identifying the responsibilities between the two parties even in the event of a vehicle crash or human injury.

In addition, two-way communication for transmitting the location information of the vehicle or the vehicle status information through the wireless communication terminal or receiving the map data or the route data is possible, so that the vehicle status information is transmitted through the wireless communication terminal when an emergency occurs. If it is not input to the state information server, it is determined that it is an emergency situation, and according to the determined emergency situation, it is possible to dispatch a rescue team or a vehicle maintenance vehicle based on recent location information.

Claims (14)

(Correction) A key input unit for outputting a signal according to a user's key operation, a GPS antenna for receiving GPS positioning information, a display unit for displaying location information of the vehicle, and a speaker for outputting a route guidance and warning broadcast of the vehicle In a navigation system for a vehicle comprising: Diagnose the state information of the vehicle provided from the electronic control device of the vehicle to alert the driver when it is checked for an abnormal state or an abnormal symptom, output the state information of the vehicle and the GPS positioning information, and receive the response signal thereof. A vehicle information search unit for outputting an audio and video type; A wireless communication terminal that receives the positioning information and the state information of the vehicle and transmits the result wirelessly and outputs a response signal thereof to the vehicle information retrieval unit; A wireless communication network for interfacing the transmission and reception of the wireless signal, including a base station and a switch having standard location information; Stores map information, outputs a DGPS signal for correcting the location information when there is a deviation between the provided location information and standard location information of the base station, and links a node of a road according to current location information and destination information. A navigation map server that reads route data including coordinates and attribute data and map information according to the route data, and provides the route information to the vehicle information retrieval unit via the wireless communication network and the wireless communication terminal; And And a vehicle state information server for storing state information of the vehicle. The method of claim 1, wherein the vehicle information search unit, A GPS receiver for correcting an error of the positioning information based on azimuth information provided from an embedded gyro sensor and outputting the error corrected positioning information; A first interface unit; A second interface unit which receives the status information of the vehicle from the electronic control apparatus of the vehicle; A data storage unit for storing map data input via the wireless communication terminal and a first interface unit; An image signal processing unit for converting map data input via the wireless communication terminal and the first interface unit into a map image for display; Providing error-corrected positioning information provided from the GPS receiver to the wireless communication terminal, storing map information, which is a response signal, in the data storage unit, reading out corresponding map data as the vehicle proceeds, and reading the image signal processor. And control to display map information, and store the current state information of the vehicle provided from the second interface unit in the vehicle state information server via the wireless communication terminal, and transmit an emergency signal when an emergency occurs. Navigation system comprising a control unit for providing a wireless communication terminal. (Correct) The vehicle information retrieval unit according to claim 2, And a voice signal processor for processing a voice signal input through the wireless communication terminal and outputting the voice signal to a speaker side or the first interface unit. (Correct) The image signal processing unit according to claim 2, A VRAM storing image converted map information; A screen display for displaying map information; And And a video signal processor which receives map data from the controller, provides the VRAM to the VRAM, converts the image data into an image map, and provides the converted image map signal to the screen display unit. (Correct) The wireless communication terminal of claim 1, wherein When transmitting and receiving a signal for performing a navigation function, when a call setup is requested from the calling party, a standby message is provided to the calling party, and after completion of transmitting and receiving a signal for performing the navigation function, the call is made with the calling party. Navigation system characterized by setting up a call. (Correct) The wireless communication terminal of claim 1, wherein When transmitting and receiving a signal for performing a navigation function, when a call setup is requested from the calling party, the transmission and reception of the signal for performing the navigation function are cut off, and the call is established with the calling party. Navigation system. (Correction) outputs the vehicle status information and GPS positioning information, including a key input unit for receiving a user manipulation signal, and a data storage unit for storing map information and state information of the vehicle, and receives a response signal to receive an audio and video type A wireless communication network including a vehicle information retrieval unit, a wireless communication terminal, a base station having standard location information, and a DGPS signal for correcting the positioning information, and outputting route data and map information according to the route data. In the navigation method of the vehicle comprising a navigation map server for providing a vehicle information search unit and a vehicle state information server for storing the state information of the vehicle, (I) calculating current position information of the vehicle based on the GPS positioning information, the azimuth information, and the moving distance information; (Ii) receiving destination information according to a driver's voice signal or a key manipulation signal, calculating a calculated route from the current location to the destination, and displaying the calculated route information; (Iii) reading the pre-stored map data based on the current location information and the destination information and guiding a moving route according to the progress of the vehicle; (Iii) providing a voice signal or a code and a search command to the navigation information server side according to the input of the user information retrieval key, and retrieving user information for outputting the retrieved information by voice and image; (I) diagnosing the state information of the vehicle, and if the diagnosed state information is checked as an abnormal state, making a voice and video alarm to the driver, and recording the vehicle state information to the vehicle state information server; And (Iii) receiving a DGPS signal output when there is a deviation between the GPS positioning information and the standard position information of the base station, and correcting the current position of the vehicle, The step (ii) may include: (ii-1) checking whether a driver inputs a voice; (Ii-2) if there is a voice input in step (ii-1), storing the voice signal; (Ii-3) if there is no voice input in step (ii-1), checking for the presence or absence of a key input; (Ii-4) processing a menu according to a code when there is a key input in step (ii-3); And (ii-5) checking whether there is a route guidance request. The method of claim 7, wherein said step (iii) (Iii-1) calculating the current position by receiving GPS information; (Iii-2) reading a map for the current location; (Iii-3) displaying on the screen; (Iii-4) calculating a moving distance using the vehicle speed sensor; (Iii-5) calculating an azimuth angle using a gyro sensor; And (Iii-6) correcting the current position by map matching based on the moving distance and the azimuth angle. (delete) (Correction) The method of claim 7, wherein the step (ii-4) (Ii-4a) Checking whether there is a destination information retrieval request or not, if there is no destination information retrieval request, proceeding to the user information retrieval step, and if there is a destination information retrieval request, transmitting a code and a retrieval command to the wireless communication terminal. ; (Ii-4b) receiving the voice recognition processing result of the server at the wireless communication terminal; (Ii-4c) checking whether the destination search is completed; (Ii-4d) if the destination search is not completed in the step (ii-4c), receiving a detailed guide content and then feeding back a destination input step; And (Ii-4e) if the destination search is completed in step (ii-4c), calculating a route to the destination and displaying the calculated route information on the screen. The method of claim 7, wherein said step (iii) (Iii-1) calculating the current position; (Vi-2) checking whether the route deviates and re-searching the route if the route deviates; (Iii-3) checking for near intersection; (Iv-4) in the step (iii-3), in the case of the vicinity of the intersection, voice guidance of the information on the direction of travel and displaying the driving information on the screen; And (Ⅲ-5) A method for navigating a destination comprising the steps of: guiding the arrival of the destination and releasing the route guidance when the arrival at the destination is reached. The method of claim 7, wherein said step (iii) (Iii-1) checking whether a user information retrieval key is input; (Iv-2) storing the voice signal when the user information search key is input; (Iii-3) transmitting a voice signal or a code signal and a search command to the wireless communication terminal; (Iv-4) receiving the voice recognition processing result of the navigation information server through the wireless communication terminal; (Ⅳ-5) If the result of the voice recognition processing received through the wireless communication terminal is a desired search word, and if the desired search word, the search processing result of the navigation information server is received at the wireless communication terminal, If feedback to step (VII-2); (Iii-6) displaying the searched information on the screen, and guiding the searched information by voice. The method of claim 7, wherein said step (iii) (Iii-1) diagnosing the state of the vehicle using the vehicle state information provided from the electronic control apparatus of the vehicle; (Vi-2) checking whether an abnormal state of the vehicle has occurred in step (iii-1); And (Iii-3) When an abnormal condition occurs in the vehicle in step (iii-2), wirelessly transmitting current location information and status information of the vehicle through a wireless communication terminal and alerting the driver with voice and video signals. ; And (Iii-4) When the abnormal state does not occur in the vehicle in step (iii-2) and after the alarm processing in step (iii-3), the driving information of the vehicle is recorded in the data storage unit of the vehicle information retrieval unit. Navigation method comprising the step of. The method of claim 7, wherein said step (iii) (Iii-1) checking whether a DGPS signal, which is a GPS error signal, is received through the wireless communication terminal; And (Iii-2) In the case of receiving the DGPS signal in the step (iii-1), after correcting the current position based on the provided DGPS signal, the current position is displayed. And displaying the position as it is.