KR19980026121A - Application Program Control Method of Vehicle Navigation System - Google Patents

Abstract

The present invention relates to a vehicle navigation system, and more particularly to a method for controlling an application program of the vehicle navigation system for the storage and operation of the application program used in the vehicle navigation system.

To this end, the present invention is provided with a map screen from a compact disc storing road map data, collecting information on the location of the vehicle, and matching the current vehicle position obtained by a predetermined application program to the map screen. A vehicle navigation system configured to display on a display device, comprising: (a) detecting an attribute of a mounted compact disc ROM when a driving power is applied; (B) the mounted compact disc ROM includes a map screen and the If the application program is a compact disk ROM storing an application program from the compact disk ROM and storing in a predetermined system memory, (c) calculating the position of the host vehicle by the loaded application program, the compact disc Match the position of the own vehicle on the road map provided from chrome and display it 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 Program Control Method of Vehicle Navigation System

The present invention relates to a vehicle navigation system, and more particularly to a method for controlling an application program of the vehicle navigation system for the storage and operation of the application program used in the vehicle navigation system.

In recent years, the increasing number of vehicles on the road has caused very large traffic congestion. Although traffic congestion is more serious in large cities, financial resources are inevitable to expand the road network due to the astronomical rise in land prices. Therefore, as a more practical solution, attempts have been made to use the existing road network as it is, but to efficiently control traffic flow using an artificial intelligence system. As one way, a car-navigation system is used. This is under development. The most basic function of the vehicle navigation system is to track the location of the vehicle in operation and accurately display it on the road map.Auxiliary functions are to provide useful information about the traffic situation of other roads, gas stations, and public offices. There is a function.

Such a vehicle navigation system employs a plurality of sensors and uses the information provided from the stand-alone navigation system to track the location of the vehicle, a navigation system using the position information provided by the GPS satellites, and both. The vehicle navigation system, which is roughly classified as a hybrid navigation system incorporating the system, refers to a hybrid navigation system.

As shown in FIG. 1, such a general vehicle navigation system is self-driving by a GPS receiver 13 which receives radio waves simultaneously from three different GPS (Global Positioning System) satellites 15 and calculates the longitude and latitude of the spot. Calculates the optimal route to the current location and the destination, and matches the calculated current position on the road map drawn from the map data storage unit 12 storing the road map data, and then through the indicator controller 18 Displayed on the screen of the display unit 19 implemented by the LCD or the like to visually guide the driver of the current position and direction of the vehicle. In addition, in this automatic navigation system, the user can enlarge and reduce the road map displayed on the indicator 19 through a predetermined key operation provided in the key input unit 16, and at the same time, set the current position or the destination of the own vehicle, and Keys to scroll the map screen.

In this configuration, the map data stored in the map data storage unit 12 is digitized (digitized) on the basis of the topographic map of the predetermined scale ratio made on the basis of the aerial photograph.

In the above configuration, the application program of the vehicle navigation system is stored on a ROM so that the application program can be read from the ROM when needed. However, in such a case, as in the case of a program that reads the map data from the map data storage unit 12 implemented as a compact disk ROM (CD-ROM), the stored data of the compact disk ROM is changed or the data is new. In the case of updating data, the application program also needs to be updated. In this case, the conventional method has a problem in that the ROM itself in the main body must be separated and replaced with a ROM loaded with a new application program.

Accordingly, an object of the present invention is to provide a method for controlling an application of a vehicle navigation system that can be easily updated and changed by an application program used in a vehicle navigation system.

1 is a control block diagram showing the configuration of a general vehicle navigation system.

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

Explanation of symbols on the main parts of the drawings

10 ... automatic navigation control unit, 11 ... map storage control unit,

12 ... map data storage, 13 ... GPS receiver,

14 ... GPS antenna, 15 ... GPS satellite,

16 ... key input, 17 ... temporary data storage,

18 ... indicator control unit, 19 ... indicator.

To this end, the vehicle 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 location of the vehicle, and recalls the current vehicle position obtained by a predetermined application. In a vehicle navigation system that is matched with a map screen and displayed on a display device, (A) detecting the attribute of a mounted compact disk when the driving power is applied; (B) the compact disk mounted as a result of the detection of the above step. (C) calculating the position of the host vehicle by the loaded application program if the application screen is stored in the compact disk ROM storing the map screen and the application program; And match the position of the host vehicle on the road map provided from the compact disk. 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.

Hereinafter, the configuration and the effect according to the preferred embodiment of the present invention will be described in detail.

First, Figure 1 is a control block diagram showing the configuration of a vehicle navigation system according to the present invention. As shown in FIG. 1, the vehicle navigation system to which the present invention is applied is shown in FIG. 1, and the vehicle navigation system according to the present invention simultaneously receives radio waves from three different global positioning system (GPS) satellites 15. 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 longitude and latitude data received by the GPS receiver 13 An automatic navigation controller 10 for matching the current position of the vehicle on the map data provided from the map data storage unit 12, a driving trajectory of the vehicle tracked from the GPS satellites 15, and the map data storage unit 12; The map storage control unit 11 for calculating the correlation of the road map data provided from the map, correcting and calculating the position of the vehicle on the road having the highest correlation, and providing it to the automatic navigation control unit 10; An indicator 19 for visually displaying an optimal road map to a destination, an indicator controller 18 for controlling the driving of the indicator 19 according to the control of the automatic navigation controller 10, and a current vehicle Temporary data storage unit 17 which temporarily stores map data for display on the display unit 19 by the display control unit 18, and a map of a desired portion is selected and the vehicle is present on the displayed map. And a key input unit 16 for setting an initial point to be positioned and a direction to be moved.

In such a configuration, the key input unit 16 includes an enlargement / reduction key of a map screen, a scroll key for moving the map screen forward and backward or left and right, and a reset key for resetting the system when the system is inoperable. .

On the other hand, the map data in the vehicle navigation system according to the present invention is stored in the map data storage unit 12, which is preferably implemented as a compact disc ROM (CD-ROM), which is an application program used in the vehicle navigation system. This map data is stored together. These applications are sequentially stored on the first track of the compact disc, and map data is stored on subsequent tracks.

On the other hand, the application program control method of the vehicle navigation system according to the present invention having such a configuration is as shown in the flowchart shown in FIG. In the application program control method of the vehicle navigation system according to the present invention, as shown in FIG. Determine the type. In this case, when the determined compact disc is an audio compact disc or a video compact disc, the respective audio and video compact discs are driven as in step S14 to perform a corresponding command.

On the other hand, if it is determined that the disk currently installed in the compact disk driver is a compact disk in which the application program and the map data are stored, the process proceeds to step S16 to load the application program from the compact disk ( loading) to temporarily store in a predetermined memory of the automatic navigation control unit. When the desired application program is loaded from the compact disc, the automatic navigation controller 10 executes the program in step S20 to receive the road map for the point where the own vehicle is located from the compact disc by the map storage controller 11. The position of the host vehicle is matched and then visually displayed on the indicator 19.

In addition, when the automatic navigation system is to be terminated, the power off signal is input and at the same time, the application program stored in the predetermined memory of the automatic navigation control unit 10 is deleted and the system is terminated. On the other hand, when the application program is to be updated, it can be exchanged with the compact disc loaded with the newly updated application program. In this case, the compact disk ROM in which the updated application program is loaded is mounted in a compact disk driver (CD driver) separate from the ROM of the main body, thereby easily replacing the compact disk ROM.

As described above, when the application program is updated by the application program control method of the vehicle navigation system according to the present invention, a new application program can be provided and used simply by interchanging a compact disk on which the application program is mounted. Compared to the exchange of ROM itself, it is possible to provide an advantage that is economical and does not require any separate operation.

Claims (1)

Receive a map screen from the compact disc which stores road map data, collect information on the location of the own vehicle, and match the current position of the own vehicle obtained by a predetermined application to the map screen to display on the display. In a vehicle navigation system, (A) detecting a property of the mounted compact disc when the driving power is applied; (B) loading the application program from the compact disc ROM and temporarily storing it in a predetermined system memory if the compact disc ROM mounted as a result of the detection of the step is a compact disc ROM storing a map screen and the application program; (C) calculating the position of the own vehicle by the loaded application program, matching the position of the own vehicle on a road map provided from the compact disk, and displaying the position of the own vehicle on the indicator; And (d) clearing an application program temporarily stored in the system memory when the driving power of the system is turned off.