KR19980066561A - Geographic Information Processing Method Using LBX Protocol in Client-Server Environment - Google Patents

Abstract

The present invention relates to a method for efficiently processing geographic information in a client-server environment. In particular, the present invention can efficiently process geographic information vector data constructed in a host system under a personal computer environment of 486 PC level or more using the LBX protocol. The present invention relates to a method of processing geographic information using the LBX protocol in a client-server environment.

The present invention provides a method for processing geographic information in a client-server environment, comprising the steps of: setting up a TCP / IP environment on a serial line, running a GeoNet server, and setting up an environment for a GeoNet server; Running a client executor, loading a font file, and setting a Hangul processing environment; Running an LBX server and connecting to a host system; Client connection processing is performed; Transmitting and receiving LBX data; Interpreting the received geospatial data with a compression processor (LBX) and processing the geospatial vector data; And terminating the LBX server and the GeoNet server when all the clients are terminated, and providing a method of processing geographic information using the LBX protocol in a client-server environment.

Description

Geographic Information Processing Method Using LBX Protocol in Client-Server Environment

The present invention relates to a method for efficiently processing geographic information in a client-server environment. In particular, the present invention can efficiently process geographic information vector data constructed in a host system under a personal computer environment of 486 PC level or more using the LBX protocol. The present invention relates to a method of processing geographic information using the LBX protocol in a client-server environment.

Conventionally, due to the problem that the terminal cannot efficiently process geographic information vector data with a large amount of data, it provides only image map information in an environment using PC communication, and does not provide accurate geographic information (vector data). There are many problems in providing services such as reduction and screen movement to general users.

Therefore, the present invention solves the above problems and provides a large amount of information to the terminal of the user to service the geographic information system (GIS) vector data and associated additional information (property data) according to the user's needs. The task is to provide a method of processing geographic information using the LBX protocol to effectively display the geographic information without difficult GIS-specific tools.

1 is a hardware configuration diagram of a computer applied to the present invention,

2 is a system configuration diagram of an entire client-server according to the present invention;

3 is an operating principle of LBX used in the present invention,

4 is a flowchart of geographic information processing using the LBX protocol in a client-server environment according to the present invention.

* Explanation of symbols for the main parts of the drawings

11: central processing unit, 12: main memory, 13: input and output controller, 14: auxiliary memory, 15: input and output, 21: GeoNet server, 22: GeoNet server module, 23: GeoNet server processing module, 24: LBX compression Handler, 31: proxy server, 32: X client

The present invention provides a method for processing geographic information in a client-server environment to achieve the above object,

Setting up a TCP / IP environment on the serial line and running the GeoNet server and setting up the environment for the GeoNet server;

Running a client executor, loading a font file, and setting a Hangul processing environment;

Running an LBX server and connecting to a host system;

Client connection processing is performed;

Transmitting and receiving LBX data;

Interpreting the received geospatial data with a compression processor (LBX) and processing the geospatial vector data; And,

When all clients are terminated, the LBX server and GeoNet server are terminated.

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

1 is a 486 PC class or more hardware configuration to which the present invention is applied, which stores a program to be executed in a central processing unit 11 and a central processing unit 11 for controlling and managing the overall operation of a computer, And a main memory device 12 for storing various data, and an input / output controller 13 connected to the internal connection bus and controlling the input / output of the auxiliary memory device 14 and the input / output device 15. The auxiliary memory device 14 stores a large amount of data, and the input / output device 15 includes a general keyboard, a display device, a printer, and the like.

In the above-described 486 class computer or more, the main memory device 12 stores a program capable of processing geographic information vector data using the LBX protocol in a client server environment to which the present invention is applied. It is performed under the control of the processing apparatus 11.

2 is a block diagram illustrating a client-server system according to the present invention. When a general user accesses a host system through a modem and receives geographic information vector data according to a desired service, the compressed geographic data received through the modem is shown. Performs a process of displaying on the user terminal using the GeoNet server 21 which is analyzed and driven using the compression processor (LBX) 24. The GeoNet server processing detail module 23 of the GeoNet server 21 performs tasks such as setting the environment of the GeoNet server, executing a client, loading a font file, and the like.

FIG. 3 illustrates the operation principle of LBX used in the present invention, and FIG. 4 relates to a method capable of processing geographic information vector data in a client server environment using the LBX protocol of FIG. 3. When the GeoNet server program resides in auxiliary memory 14 in main memory 12 and is started by central processing unit 11, the GeoNet server program is ready to receive data sent from the host system. Inputs, outputs, network interfaces, and memory for operating as a GeoNet server are all allocated from Windows. The Network Application Program Interface (API) is designed to support TCP / IP using Windows Sockets 1.1 and runs over TCP (Transmission Control Protocol). When the GeoNet server 21 starts, the process of opening the port of TCP and waiting for the X client 32 of the host system to connect, and the GeoNet server 21 automatically when all connected X clients 32 are terminated Ends with

The execution of each processor is performed in order of running and waiting for the GeoNet server 21, connecting to the GeoNet server 21 after the proxy server 31 is executed, and connecting to the proxy server 31 after the X client 32 is executed. do.

A process of processing geospatial vector data will be described in more detail with reference to FIG. 4.

First, set TCP / IP environment on the serial line (S1), then run the GeoNet server (S2), run the program to set the environment for the GeoNet server (S3), and then run the client executor (S4). And a process of loading a used font file (S5) and setting a Hangul processing environment (S6).

After the LBX server is driven and connected to the host system (S7), a connection waiting state process (S8) for transmitting and receiving data is performed. After the client connection process is performed (S9), the LBX data can be transmitted and received with the host system. A process of transmitting and receiving substantial data using a module is performed (S10).

At this time, looking at the process of transmitting and receiving LBX in more detail, the geographic information data received from the proxy server 31 of the host system is interpreted by the compressor (LBX) 24 (S11) and displayed on the terminal (S12). Here, LBX (Low Bandwidth X) is an extension of the protocol that enables fast data transmission over low speed networks such as telephone lines by redesigning the existing X protocol based on a local area network (LAN).

GeoNet server 21 and proxy server 31 send and receive data on low speed network using LBX protocol, and proxy server 31 and X client 32 use high speed X11 protocol on the same host or LAN. The process of sending and receiving data is performed.

Since the GeoNet server 21 and the proxy server 31 must communicate using the LBX protocol in addition to the X11 protocol, the GeoNet server must support the LBX protocol. After the process, the geospatial vector data is displayed on the user terminal by using the decompressed LBX data (S12). If all clients are not terminated, the process is branched to the above-mentioned connection waiting state (S8). When all clients are terminated (S13), the process of terminating the LBX server and the GeoNet server (S14) is performed continuously.

As described in detail above, the present invention provides a method for efficiently processing a GIS (Geographic Information System) using the LBX protocol in a client-server environment. Due to the problem that it cannot be processed, in the environment using general PC communication, it provides only image map information, but does not provide accurate geographic information (vector data). The present invention is accompanied by the effect that can be applied to various geographic information services, such as city information search service, land use information search service, land price and real estate information search service based on PC communication.

In addition, by presenting the present invention, the geographic information system is popularized to increase the uniqueness and use value of geographic information, to secure the core base technology by implementing the nation's first X window service on a PC, and to apply general serial line communication technology to the X terminal. By grafting, it contributes to the popularization of X Window, and finally, it is possible to provide high value-added PC communication service based on GIS by breaking away from text-based communication service.

In addition, a preferred embodiment of the present invention is disclosed for the purpose of illustration, those skilled in the art will be able to make various modifications, changes, additions, etc. within the spirit and scope of the present invention, such modifications and modifications belong to the following claims You will have to look.

Claims (4)

In the method for processing geographic information in a client-server environment, Setting up a TCP / IP environment on the serial line and running the GeoNet server and setting up the environment for the GeoNet server; Running a client executor, loading a font file, and setting a Hangul processing environment; Running an LBX server and connecting to a host system; Client connection processing is performed; Transmitting and receiving LBX data; Interpreting the received geospatial data with a compression processor (LBX) and processing the geospatial vector data; And, Method of processing geographic information using LBX protocol in client-server environment, characterized in that when all clients are terminated, LBX server and GeoNet server are terminated. The method of claim 1, Setting up the TCP / IP environment on the serial line and running the GeoNet server and setting up the environment for the GeoNet server, I / O, network interface, and memory for operating as a GeoNet server are allocated from Windows, and the application interface of the network supports TCP / IP using Windows Sockets 1.1. The protocol runs over TCP, and the GeoNet server When is started, it opens a port of TCP and waits for the X client of the host system to connect, and when all connected X clients are terminated, the GeoNet server is automatically terminated. Geographic information processing method using LBX protocol in environment. The method of claim 1, In the step of running the LBX server and connecting with the host system, the host system includes a proxy server and an X client connected thereto, the GeoNet server and the proxy server use the LBX protocol, and the proxy server and the X client are the same host or LAN. Geographic information processing method using LBX protocol in a client-server environment, characterized in that using the X11 protocol. The method of claim 3, In addition to the X11 protocol, the GeoNet server and the proxy server communicate using the LBX protocol, and the GeoNet server must support the LBX protocol.The execution of each processor connects to the GeoNet server after executing and waiting the GeoNet server. A method of processing geographic information using the LBX protocol in a client-server environment, wherein the X client is executed in order of accessing a proxy server.