KR20040099717A - Method and apparatus for providing a digital guideboard information in a car navigation system - Google Patents

Abstract

PURPOSE: A system for servicing the road guide for a vehicle and a method for implementing the same are provided to implement a simple navigation system by selectively supplying data such as a character, a road number or the like. CONSTITUTION: A system for servicing the road guide for a vehicle includes a first memory unit(100), a second memory unit(102), a graphic processing unit(120), an encoder(130), a display unit(140) and a controller(110). The first memory unit temporally stores the control and operation results required for displaying the road guide display panel information to outside. The second memory unit stores the road guide display panel information and voice guide information, respectively. The graphic processing unit outputs the road guide display panel information and the path search numerical map information as a graphic signal. The encoder converts the graphic signal into the screen signal. The display unit displays the screen signal supplied from the encoder to outside. And, the controller outputs the voice guide information stored at the second memory unit if the road guide display panel information is the voice guide information.

Description

Vehicle road guidance service system and method of implementation {METHOD AND APPARATUS FOR PROVIDING A DIGITAL GUIDEBOARD INFORMATION IN A CAR NAVIGATION SYSTEM}

The present invention relates to a road guidance service technology for a vehicle, and more particularly to a road guidance service system and an implementation method for a vehicle suitable for graphically displaying and displaying road guide sign information for each point according to location information retrieved by a GPS (Global Positioning System) It is about.

Today, various vehicles including automobiles have become an essential means of living for modern people, and the number of possessions is exploding with the improvement of quality of life.

The increase in vehicles has been accompanied by life and property damage caused by various traffic accidents, and the world is investing a lot of budget to minimize such damage. In Korea, various policies and campaigns for drivers' safe driving have been actively and variously implemented to reduce traffic accidents.

The industry is also producing the results of various safety operation systems to prevent traffic accidents, and is trying various researches to develop safer next generation operation systems.

Recently, thanks to the development of satellites and technological developments, satellite safe driving and traffic accident prevention technologies have emerged.

A state-of-the-art positioning system using GPS satellites can calculate the exact position of the target at any point on earth by receiving location information and time information from several GPS satellites orbiting the earth at an altitude of about 20,000 km around the earth and using it as basic information. Is an advanced system.

The car navigation system is a road information service system using GPS. The car navigation system creates a map based on a large amount of data on a large number of buildings and locations on the surface of the vehicle, and the vehicle that is driving the map information. Is a technology that delivers in real time.

Meanwhile, various information may be required for a vehicle to travel on a road, but above all, a road guide sign may be the most representative information required to determine a destination to be traveled.

However, in the related art, a problem arises that it is not easy to recognize accurate information because the driver has no choice but to visually check road guide signs installed at relatively long distances while driving the road. In particular, it is more difficult to check signs in rainy weather or at night, and it is difficult to identify signs by roadside trees in summer.

Although the existing vehicle navigation system provides a road guide service, it is difficult to obtain instant information during driving because it mainly guides road information, and it is difficult to grasp which direction and how many times.

The present invention has been made to solve the above-described problem, when the destination route information is set and the vehicle travels to determine the vehicle driving position through the GPS (Global Positioning System) to display the road guide sign information for each point through the LCD window It is an object of the present invention to provide a vehicle road guidance service system and an implementation method for outputting a route.

According to a preferred embodiment of the present invention for achieving this purpose, a vehicle road guide sign service system for receiving the current location information transmitted from the GPS satellite and outputs the road guide sign information for each point according to the route information to the destination In the, the first memory unit for temporarily storing the control and calculation results required to display the road guidance sign information to the outside, and the second memory unit for storing road guidance sign information, route map numerical map information, voice guidance information, respectively And a graphic processing unit for graphicly processing road guidance sign information and digital map information for route search as a graphic signal, an encoder for converting a graphic signal into a screen signal, and a display for externally displaying screen signals provided through the encoder. When the wealth and the received GPS information reach the destination When matched with the information, the controller controls to display the road guide sign information stored in the second memory unit corresponding to the road guide sign existing within the predetermined distance and numerical information for route search to the outside, and the road guide sign information is voice information. The present invention provides a road guide sign service system for a vehicle including a control unit controlling to transmit voice guidance information stored in a second memory unit to the outside.

According to another embodiment for achieving the object of the present invention, in the method for providing the road information sign information for the vehicle by receiving the current location information transmitted from the GPS satellites, each of the road guide sign information is classified by form code Doing; Determining whether the destination information is input; and if the destination information is input, performing route search to the input destination to set route information and road guide sign coordinate information; If the GPS coordinates corresponding to the current location of the vehicle match the route information to the destination, determining whether the road guide sign coordinate information exists within the preset distance; and if the road guide sign coordinate information exists within the preset distance, the created road It provides a road guide sign service method for a vehicle comprising loading the road guide sign information corresponding to the road guide sign coordinate information among the guide sign information and displaying a predetermined road guide sign to the outside.

1 is a block diagram of a road guide service system for a vehicle according to an embodiment of the present invention;

FIG. 2 is an exemplary diagram of a sign table allocated in the second memory of FIG. 1; FIG.

3A to 3C are exemplary views of road guide signs output through the display of FIG. 1;

4 is a flowchart of a road guidance service process for a vehicle according to another embodiment of the present invention;

FIG. 5 is an exemplary diagram of a road guidance map for explaining the route searching process of FIG. 4. FIG.

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

100: first memory unit 102: first memory unit

110: control unit 120: graphics processing unit

130: encoder 140: display unit

150: GPS antenna 160: GPS receiver

170: speaker

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

Prior to the description, the core technical gist of the present invention is to produce road guide signs existing on the road as digital data and provide the driver with the GPS information according to the technical idea. It will be easy to achieve.

1 is a block diagram illustrating a road guidance service system for a vehicle according to an exemplary embodiment of the present invention, wherein the first memory unit 100, the second memory unit 102, the controller 110, the graphic processor 120, and the encoder are shown in FIG. 130, the display 140, the GPS antenna 150, the GPS receiver 160, and the speaker 170.

As shown, the first memory unit 100 may be configured as, for example, an SDRAM and performs a function of temporarily storing control and calculation results necessary for displaying road guide sign information to the outside.

The second memory unit 102, for example, a flash memory, stores road guide sign information, route search numerical map information, and voice guide information, respectively, which are applied to the present embodiment. It is loaded and displayed externally.

At this time, the road guide sign information is stored separately for each type code as shown in FIG.

That is, as shown in Figure 2, the road guide sign information corresponding to the form code 100 has a different code value according to the distance, road number, duplicate display, letters, sign location, direction, etc., corresponding to the GPS information Any sign data is displayed externally at the coordinate point.

The same applies to road sign information corresponding to type codes 110, 120, 130, 140, 150 and 160.

For example, referring to FIG. 3A, road number sign information for a range mark A, a road number sign B, and a caution sign sign C may be displayed, where the road number sign B is a location. Depending on the size and value, the code value may be set differently to display the corresponding road guide sign, and the caution sign indication (C) may be displayed to notify the danger area according to the route information.

In addition, the road number display (B) shown in FIG. 3B indicates a duplicate display, and code values corresponding to the type, text, and color are set, respectively, so that the data of the sign of the overlapping display may be differently defined to be data. have.

In addition, Fig. 3c is displayed on the road character sign (D), street number (E) road sign information, the direction sign (D) may be configured to blink to change the background color of the character and increase visibility. The distance display E is stored in the second memory unit 102 by setting distance data according to the display position code as shown in FIG. 2.

Meanwhile, the graphic processor 120 may process the road guide sign information and the digital map information for the route search as a graphic signal, and output the graphic signal, and the encoder 130 converts the graphic signal into a screen signal.

In addition, the display unit 140 serves to display the screen signal provided through the encoder 130 to the outside. The display unit 140 may be applied to, for example, an LCD, that is, an LCD device provided in a general vehicle navigation system, and this fact can be easily understood by those skilled in the art. Technical description will be omitted.

The controller 110 according to the present invention determines whether the GPS information received from the GPS receiver 160 matches the route information to the destination, and if the route information matches the route information, the road guide exists within a predetermined distance, for example, 100 m. Controls to display the road guide sign information and the route search numerical information stored in the second memory unit 102 corresponding to the sign to the outside.

That is, the controller 110 receives the current location information transmitted through the GPS antenna 150 and outputs road guide sign information for each point according to the route information to the destination.

In addition, the controller 110 determines whether the road guide sign information is information for voice guidance, and if the information is for voice guidance, transmits the voice guide information stored in the second memory unit 130 to the outside through the speaker 170. To control.

That is, while displaying the road number display (B) in FIG. 3b, voice guidance, for example, may transmit a message "It is a right turn toward Gwacheon to 45 road from the shrine crossroad," and in the direction of the character display (D) in Figure 3c. While displaying the distance indicator (E), a voice guidance, for example, "500 meters ahead, at the crossroad of Hyehwa-dong, Jongno 4 is a right turn," you can send.

Hereinafter, with reference to the above-described configuration, with reference to the flowchart of Figure 4 attached to the vehicle road guide sign service process according to a preferred embodiment of the present invention will be described in more detail.

First, the navigation program is driven in step S400, and it is determined whether an arbitrary destination is set by the driver (S402).

As a result of the determination in step S402, when arbitrary destination information is input, the controller 110 proceeds to steps S404 and S406 to perform a route search to the input destination to obtain route information and road guide sign coordinate information. Set it.

The route information and the road guide sign coordinate information are as shown in the road guide map of FIG. 5.

As shown in FIG. 5, the route information 50 is indicated by a bold line in the entire map, and the road guide sign coordinate information X ₀ , X ₁ , X ₂ , X ₃ , X on the route information 50. ₄ , X ₅ , X ₆ , ...) are sequentially set. The road guide sign coordinate information (X ₀ , X ₁ , X ₂ , X ₃ , X ₄ , X ₅ , X ₆ ,…) indicates a sign display position and a voice guide position, and a street sign and a road number at the corresponding coordinates. It is to display road guidance signs including signs, directions signs, crossroad signs, overlap signs, signs location signs, direction signs, and caution signs information, and to send out corresponding voice guidance messages.

Meanwhile, in steps S408 and S410, the controller 110 determines whether the GPS coordinates corresponding to the current location of the vehicle match the route information to the destination through the GPS receiver 16 described above, and the route information to the destination. If it is matched with the control unit proceeds to step S412 and determines whether there is road guidance sign coordinate information within a predetermined distance, for example, 100m.

As a result of the determination in step S412, if the road guide sign coordinate information exists within the predetermined distance, the controller 110 proceeds to step S414 and guides the road among the road guide sign information created in the second memory unit 102. The road guidance sign information corresponding to the sign coordinate information is loaded to display a predetermined road guide sign to the outside.

In addition, the controller 110 determines whether the road guide sign coordinate information corresponds to the overlapping sign information in step S416, and if it corresponds to the overlapping sign information, the controller 110 proceeds to step S418 and displays the color of the road guide sign. Change to display.

In addition, the controller 110 determines whether the road guide sign coordinate information corresponds to the character marking information in the step S420, and if the character information corresponds to the character marking information, the controller 110 proceeds to step S422 to determine the character of the character. Change the color to display and flash these characters.

In addition, the controller 110 determines whether there is road guidance sign coordinate information for voice guidance within a predetermined distance in step S424, and if the information for voice guidance exists, the controller 110 proceeds to step S426. To transmit a predetermined voice guidance message to the outside through the speaker 170.

As described above, the present invention provides a road guide sign information including road guide sign information, for example, road number, range, moving distance, direction, etc., in a vehicle LCD monitor at a location on the road where a sign exists while driving a vehicle. It is implemented to display.

Therefore, the present invention can easily obtain the road guide sign information during rainy weather, fog and night, and do not display the complex navigation function as a whole, the letter or road number of the sign only in the required section, for example, the section to be rotated, A simpler navigation system can be implemented by selectively providing data such as direction to the driver.

In the future, if local road signs can be replaced by digital signs at the local government or government level, only the sign data can be supplied to the navigation equipment company, thereby reducing the enormous cost of installing the guide signs on the road. will be.

As mentioned above, although this invention was concretely demonstrated based on the Example, this invention is not limited to this Example, Of course, various changes are possible within the range which does not deviate from the summary.

Claims (5)

In a vehicle road guide sign service system for receiving current location information transmitted from a GPS (Global Positioning System) satellite and outputting road guide sign information for each point according to route information to a destination, A first memory unit for temporarily storing control and calculation results necessary for displaying the road guide sign information to the outside; A second memory unit for storing the road guide sign information, route map numerical map information, and voice guidance information, respectively; A graphic processor configured to process the road guide sign information and the digital map information for route search as a graphic signal and output the graphic signal; An encoder for converting the graphic signal into a screen signal; A display unit configured to externally display the screen signal provided through the encoder; If the received GPS information is matched with the route information to the destination, control to externally display road guide sign information and route search numerical information stored in the second memory unit corresponding to the road guide sign existing within a preset distance. And, if the road guide sign information is information for voice guidance, controlling to transmit voice guide information stored in the second memory unit to the outside. Road guidance sign service system for a vehicle comprising a. The method of claim 1, wherein the road guide sign information is classified by type code, and at least one or more of a street sign, a road number sign, a character sign, a crossroad sign, a duplicate sign, a sign location sign, a direction sign, and caution sign information. Road guidance sign service system for a vehicle, characterized in that consisting of information. In the method for receiving the current location information transmitted from the GPS satellites for providing road guidance sign information for the vehicle, Creating each road guidance signage information classified by shape code, Determining whether any destination information is input; When the arbitrary destination information is input, performing the route search to the input destination to set the route information and the road guide sign coordinate information; Determining whether the road guide sign coordinate information exists within a preset distance when the GPS coordinate corresponding to the current location of the vehicle provided from the GPS satellite matches the route information to the destination; When the road guide sign coordinate information exists within the preset distance, the road guide sign information corresponding to the road guide sign coordinate information is loaded from the created road guide sign information to display a predetermined road guide sign to the outside. step Road guidance signs service method for a vehicle comprising a. The method of claim 3, wherein the road guide sign information comprises at least one or more of a street sign, a road number sign, a character sign, a crossroad sign, a duplicate sign, a sign location sign, a direction sign, and a caution sign information. How to service road signs for vehicles. The method of claim 3 or 4, wherein the method If the road guide sign coordinate information corresponds to the duplicate cover information, changing and displaying a color of the road guide sign; If the road guide sign coordinate information corresponds to the direction character sign information, changing and displaying the color of the direction character and blinking the direction character; If a road guide sign coordinate information for voice guidance exists within the preset distance, transmitting a predetermined voice guidance message to the outside; The road guide sign service method for a vehicle further comprising a.