KR19980014875A - Selection and Selection of Wireless Data System (RDS) - Google Patents

Abstract

The present invention relates to a navigation system for a vehicle, and more particularly, to a method and apparatus for selecting and receiving an RDS from a wireless data system, The user can select and receive only the information required by the user when receiving the traffic broadcast using the extracted traffic information, and the information is immediately reflected in the actual road conditions of the vehicle.

Description

Selection and Selection of Wireless Data System (RDS)

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation system for a vehicle, and more particularly, to selective reception of a radio data system (hereinafter abbreviated as RDS) and a method for calculating an optimal route for a navigation system using the same.

In general, RDS provides various services by loading data on Very Hrgh Freqency (VHF) / Freguency Mojulation (FM) broadcasting signals.

FIG. 1 shows a general RDS code, which is composed of a group consisting of four blocks (block 1, block 2, block 3, and block 4).

Each of the blocks includes an information word bit (16 bits) and a confirmation word bit (10 bits). The information word bit includes a program recognition (PI) code, a group type code, A radio text broadcast function, a time and date notification function, and the like.

The traffic broadcasting using the RDS as described above can directly inform the user of traffic real-time status transmitted from the broadcasting station through voice or characters on the screen.

In addition, when the navigation system for a vehicle is used, the origin and destination are input by the self-algorithm as shown in FIG. 2 to analyze the properties of each road and information about the waypoints, Route 5-road 10-destination).

The conventional method of calculating the optimal route of the vehicle has a problem in that it is impossible to modify the established route to a route suitable for the current traffic situation because there is no connection between the RDS for providing real time information and the navigation device for the vehicle.

In addition, traffic information is unilaterally received when receiving traffic information using RDS, so that the user can not select and receive a desired area.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide an RDS which can selectively receive traffic information using RDS and calculate an optimal route according to the received information. And a method for calculating an optimum path of a vehicle using the same.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a diagram of a typical RDS code,

FIG. 2 is a diagram illustrating an example of route setting in the prior art using RDS;

3 shows a data structure of an RDS native transmission code according to the present invention,

4 is a flow chart for performing RDS selection reception and a method for calculating an optimal route for a navigation system using the RDS according to the present invention.

The RDS selection and the optimal route calculation method using the RDS according to the present invention extract RDS by a broadcast code unique broadcasting code capable of region classification, road classification and situation classification, And this information is immediately reflected in the actual road conditions of the vehicle, so that the route is modified to quickly travel to the optimum route.

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

FIG. 3 is a diagram illustrating a data structure of an RDS native transmission code according to the present invention, and FIG. 4 is a flowchart for performing an RDS selection and RDS optimal route calculation method according to the present invention.

Referring to FIG. 3, each block includes a group consisting of four blocks (block 1, block 2, block 3, and block 4), and each block includes information word bits (16 bits) And a confirmation word bit (10 bit) for confirming this.

In the RDS receiver, the program recognition code of the block 1 is confirmed using the confirmation word, and the group type code is searched to recognize that the broadcasting station own application codes are stored in the case of? 1? 1.

After searching Bo, traffic program recognition, program type and traffic guidance recognition codes of the block 2, 16 bits of the remaining 4 bits, 16 bits of the block 3, and 16 bits of the block 4 are classified into broadcasting transmission codes for the purpose of traffic information, do.

Hereinafter, an embodiment according to the definition of broadcasting station specific transmission codes will be described.

First, the 4 bits of block 2 are used for area classification and are divided into 15 areas (6 cities, Gyeonggi, Chungnam, Chungbuk, Jeonnam, Jeonbuk, Gyeongnam, Gyeongbuk, Gangwon, Jeju).

The 16 bits of the block 3 are used for road classification, and 9 bits are allocated to assume a maximum of 512 roads, and the remaining 7 bits are allocated to indicate the detailed area by dividing the road by 128 for each road.

In addition, the 16 bits of the block 4 are used for the situation classification, and 5 bits are allocated to assume a maximum of 32 kinds of traffic conditions such as under construction, underway, vehicle increase, and under control, and other information The remaining 6 bits are allocated.

The selection and reception of the RDS when receiving the RDS of the data structure as described above and the optimal route calculation method for the navigation using the RDS will be described with reference to FIG.

First, when the departure place and the destination place are inputted (S100), comprehensive analysis of the attributes of the respective roads and information on waypoints are carried out to determine the optimum route such as route (departure place - road 6 - way 3 - road 9 - way route 5 - road 10 - (S101) (see Fig. 2).

If the optimal path (a path) is calculated, an RDS reception interval is automatically selected in order to obtain only traffic information corresponding to all elements from the source to the destination (S102). If the RDS information for the selected reception interval is input, And displays it on a monitor (not shown) (S103).

Hereinafter, a step (S102) of selecting and receiving an RDS reception interval to obtain only traffic information corresponding to the optimal hardness (a hardness) from the source to the destination will be described in detail.

First, we receive the coded RDS data so as to distinguish the area classification, the road classification, and the situation.

Then, the area or road code according to the calculated optimum route (route a) is matched with the area or road code of the received RDS data, and the area or road code corresponding to the matching part is checked And receives a situation from the received RDS data.

While the RDS information is received and output, it is determined whether or not the destination has been continuously received (S104). When the destination arrives, the process is terminated (S105).

If it is not possible to reach the destination in step S104, it is determined whether the current route (a route) determined in step S101 is continued or bypassed (S106).

In step S106, if the driver selects the detour, the user desires to modify the current route. If the current route is to be modified, the current received section is set as a section to be avoided, and then the origin and destination are reentered (S107) (S101).

That is, when receiving the information that the road 6 is in progress in the path a, which is the optimal path set in the step S101, and the road 9 is in the accident, the user selects bypass in the step S106, , And then the optimal path is recalculated so that a change path such as path (origin-road 6-way 3-way 5-way 2-way 3-destination) can be obtained 2). The above process is repeated to arrive at the destination and the process is terminated.

As described above in detail, according to the RDS selection reception method and the optimal route calculation method for a vehicle navigation using the RDS selection according to the present invention, a unique region code is set for unidirectional traffic information at the time of RDS reception, There is an effect that it can be selectively received.

In addition, the received information is immediately reflected on the actual road conditions of the vehicle, and the route to the destination is corrected, so that the vehicle can be quickly traveled on the optimum route.

Claims (7)

A method for calculating a path using information of a wireless data system, Inputting a start point and a destination point; A receiving step of calculating an optimal route of the source and destination and receiving RDS information corresponding thereto; A display step of outputting the RDS information; Determining that the current path is a destination; A selection step of selecting progress or bypass according to the road condition of the current route; And a re-calculation step of re-calculating the optimal route by inputting the current route and destination when the route is detoured and receiving the corresponding RDS information. Path calculation method. The method according to claim 1, The method of claim 1, wherein the step of selecting, selecting, displaying and selecting the wireless data system (RDS) repeatedly performs the calculation, Calculation method. The method according to claim 1, Wherein the RDS information data is configured to allocate a predetermined bit to a specific block of the RDS code so as to be able to classify a region, a road, and a situation by using a selection and reception of a radio data system (RDS) Calculation method. The method according to claim 1, Wherein the displaying step displays the RDS information on the monitor or displays the RDS information on a monitor. Receiving wireless data coded so as to be able to classify a region, a road, and a situation; Receiving a code of an area or a road to be selected for reception and confirming a part corresponding to the area or the road code of the received data; And a selection receiving step of selecting and receiving a state of a region or a road corresponding to the matching part in the above step. 6. The method of claim 5, Wherein the area code is composed of 4 bits to divide the entire country into 15 areas and display the area code. 6. The method of claim 5, Wherein the road classification code is divided into a code for displaying a nationwide road and a detailed display code for detailing the road representation of the nationwide road, and a method for calculating an optimal route for a navigation system using the selective reception of the wireless data system.