KR0184805B1 - Application program control method for car navigation system - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a car navigation system, and more particularly, to a method of controlling an application program of a car navigation system for storing and operating an application program used in a car navigation system.

To this end, the present invention provides a map screen from a compact disc which stores road map data, collects information on the position of the car, matches the position of the present car obtained by a predetermined application program to the map screen A vehicle navigation system for displaying on a display device, comprising: (a) detecting a property of a mounted compact discrom when the driving power is applied; (b) Loading the application program from the compact disc and temporarily storing the application program in a predetermined system memory if the application program is a compact disc, (c) calculating the position of the vehicle by the loaded application program, The position of the vehicle is matched on the road map provided by chrome and displayed on the indicator Is when step (d) driving the power-off of the system is characterized in that it includes the step of clearing the temporarily stored in system memory applications.

Description

Application control method of car navigation system

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a car navigation system, and more particularly, to a method of controlling an application program of a car navigation system for storing and operating an application program used in a car navigation system.

In recent years, the increase in the number of vehicles on the road has caused very large traffic congestion. Such traffic congestion is even more serious in large cities, but there is a demand for resources that can not be afforded to expand road networks due to the astronomical rise of land prices. Therefore, as a more practical solution, an attempt is made to efficiently control the traffic flow by using the existing road network as it is, but using an artificial intelligent system. As one of the methods, a car navigation system This is under development. The most basic function of this vehicle navigation system is to track the position of the vehicle in operation and accurately display it on the road map. The auxiliary function is to grasp the traffic situation on other roads, provide useful information on gas stations, Function.

Such a car navigation system includes a stand-alone navigation system that employs a plurality of sensors and tracks vehicle positions using information provided from the sensors, a batting navigation system that uses position information provided by a GPS satellite, System, and the hybrid vehicle navigation system described below represents a hybrid navigation system.

1, the general car navigation system receives a radio wave simultaneously from three different Global Positioning System (GPS) satellites 15, and receives a signal from the GPS receiver 13, which calculates the longitude and latitude of the point, Calculates the optimum route to the current position and destination of the road map data, and matches the calculated current position on the road map extracted from the map data storage unit 12 storing the road map data, Is displayed on the screen of the display device 19 implemented by an LCD or the like to visually guide the driver to the current position and the traveling direction of the vehicle. In this automatic navigation system, the user can enlarge or reduce the road map displayed on the display device 19 by a predetermined key operation provided on the key input section 16. At the same time, the user can set the current position or destination of the vehicle, And a key for scrolling the map screen.

In this configuration, the map data stored in the map data storage unit 12 is digitized (digitized) based on the topographical map of the predetermined scale ratio created based on the aerial photographs.

In addition, in the above configuration, the application program of the car navigation system is stored on a ROM, and the application program is read from the ROM and used when necessary. However, in this case, as in the case of a program for reading the map data from the map data storage unit 12 implemented as a compact discrom (CD-ROM), the stored data of the compact discrom is changed or the data is updated It is necessary to update the application program in case of updating with the data. In this case, in the conventional method, there is a problem that the ROM itself in the main body is separated and replaced with a ROM loaded with a new application program.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide an application program control method for a car navigation system, which makes it easy to update and change application programs used in a car navigation system.

FIG. 1 is a control block diagram showing a configuration of a general car navigation system.

FIG. 2 is a flowchart showing an application program control method of the car navigation system according to the present invention.

DESCRIPTION OF THE REFERENCE NUMERALS

10: automatic navigation control unit 11: map storage control unit

12: map data storage unit 13: GPS receiver

14: GPS antenna 15: GPS satellite

16: Key input unit 17: Temporary data storage unit

18: indicator control section 19: indicator

To this end, the car navigation system according to the present invention is provided with a map screen from a compact disc storing road map data, collects information on the position of the car, The vehicle navigation system according to claim 1, further comprising: (a) detecting the attribute of the installed compact discrom when the driving power is applied; (b) Loading the application program from the compact disc and temporarily storing the application program in a predetermined system memory if the map screen and the application program are stored in the compact discrom, (c) calculating the position of the vehicle by the loaded application program, And the position of the vehicle is matched on the road map provided from the compact discrom After displaying on the indicator, (d) driving the power-off of the system is characterized in that it includes the step of clearing the temporarily stored in system memory applications.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a configuration and operation effects according to preferred embodiments of the present invention will be described in detail.

1 is a control block diagram illustrating a configuration of a vehicle navigation system according to the present invention. 1, the car navigation system according to the present invention receives radio waves simultaneously from three different GPS (Global Positioning System) satellites 15, as shown in FIG. A GPS receiver 13 for calculating the longitude and latitude of the point, a map data storage unit 12 for storing road map data, and a controller for processing the longitude and latitude data received by the GPS receiver 13, An automatic navigation control unit 10 for registering the current position of the map data storage unit 12 on the map data provided from the map data storage unit 12, A map storage control unit 11 for calculating the correlation between the road map data provided from the road map data management unit 10 and the vehicle navigation system, A display controller 19 for visually displaying an optimum road map to a destination, a display controller 18 for controlling the driving of the display 19 under the control of the automatic navigation controller 10, A temporary data storage unit 17 for temporarily storing the map data so that the map data can be displayed on the display unit 19 by the indicator control unit 18, And a key input unit 16 for setting an initial point to be located and a direction to be moved.

In this configuration, the key input unit 16 is provided with an enlargement / reduction key of a map screen, a scroll key for moving the map screen back and forth or left and right, and a reset key for resetting the system when the system is inoperable .

In the meantime, the map data in the car navigation system according to the present invention is stored in a map data storage unit 12, which is preferably implemented as a compact disc ROM (CD-ROM) Are stored together with the map data. These applications are stored sequentially on the first track of the compact disc, and the map data is stored in the following tracks.

The application program control method of the car navigation system according to the present invention having such a configuration is as shown in the flowchart of FIG. As shown in FIG. 2, when the vehicle navigation system is powered on and initialized in step S10, the application program control method of the car navigation system according to the present invention checks CD in step S12, And judges the type. If the determined compact disc is an audio compact disc or a video compact disc, the respective audio and video compact discs are driven and the corresponding command is executed as in step S14.

On the other hand, if it is determined in step S12 that the disc loaded in the present compact disc driver is a compact disc storing the application program and the map data, the process proceeds to step S16 to load the application program from the compact disc and temporarily stores it in a predetermined memory of the automatic navigation control unit. When the desired application program is loaded from the compact disc, the automatic navigation control unit 10 performs the program in step S20, and receives the road map for the position where the vehicle is located from the compact disc by the map storage control unit 11 The position of the vehicle is matched and visually displayed on the display 19. [

When the automatic navigation system is to be terminated, the power off signal is input, the application program stored in the predetermined memory of the automatic navigation control unit 10 is erased, and the system is terminated. On the other hand, if the application program is to be updated, it is necessary to exchange the newly updated application program with the compact discrom. At this time, the compact disc chrome loaded with the updated application program is mounted on a compact disc driver (CD driver) separate from the ROM of the main body, thereby facilitating the replacement.

As described above, according to the method of controlling an application program of the car navigation system according to the present invention, when updating an application program, a new application program can be easily provided and exchanged by exchanging a compact disc loaded with the application program. It is possible to provide an advantage that it is economical and requires no special operation as compared with exchanging the ROM itself.

Claims (1)

A map screen is provided from a compact disc storing road map data, and the information about the position of the car is collected, and the position of the present car obtained by a predetermined application program is registered on the map screen and displayed on the display screen In a vehicle navigation system, (A) detecting the attribute of the mounted compact disc when the driving power is applied, (B) loading the application program from the compact discrom when the installed compact discrom is a map screen and a compact disc storing the application program, and temporarily storing the loaded application program in a predetermined system memory, (C) calculating the position of the vehicle by the loaded application program, displaying the position of the vehicle on the road map provided from the compact discrom, (D) clearing an application program temporarily stored in the system memory when the driving power of the system is turned off.