KR950022253A

KR950022253A - Miniature earth station (VSAT) and data transmission method of satellite communication system

Info

Publication number: KR950022253A
Application number: KR1019930030692A
Authority: KR
Inventors: 김승호
Original assignee: 정장호; 금성정보통신 주식회사
Priority date: 1993-12-29
Filing date: 1993-12-29
Publication date: 1995-07-28

Abstract

본 발명은 위성통신 시스템에 관한 것으로서, 특히 중심국과 초소형지구국간에 데이타 전송시 음성 및 데이타의 송수신 단절상태를 방지하고, 주파수 효율을 증가 시킬 수 있도록 한 위성통신 시스템의 초소형 지구국 및 데이타 전송방법에 관한 것이다.The present invention relates to a satellite communication system, and more particularly to a micro earth station and a data transmission method of a satellite communication system to prevent the transmission and reception of voice and data during data transmission between the central station and the micro earth station, and to increase the frequency efficiency. will be.

이를 위하여 하나의 복조기(4)및 복호기(5)를 갖고 마이크로 프로세서(8)에 수신신호를 전송하는 수신부(20)와, D/A변환기(15)및 국부발진기(13)를 갖는 송신부(30)를 포함하는 위성통신 시스템의 초소형 지구국에 있어서, 상기 복호기(5) 및 마이크로 프로세서(8)사이에 한 프레임에 존재하는 제어 데이타를 체크하는 검출기 (16)를 연결하고, 상기 검출기(16)의 일측단의 D/A변환기(15)의 입력단에 연결하여 상기 송신부(30)인 국부발진기(13)의 출력주파수를 변환기키도록 이루어진 것이다.To this end, a receiver 20 having one demodulator 4 and a decoder 5 for transmitting a received signal to the microprocessor 8, and a transmitter 30 having a D / A converter 15 and a local oscillator 13 are provided. In the micro earth station of the satellite communication system, a detector 16 for checking control data present in one frame is connected between the decoder 5 and the microprocessor 8, and The output frequency of the local oscillator 13, which is the transmitter 30, is connected to the input terminal of the D / A converter 15 of one side to convert the output frequency.

Description

Miniature earth station (VSAT) and data transmission method of satellite communication system

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제3도는 본 발명에 따른 초소형 지구국의 순수 데이타 및 제어 데이타 전송개념도.3 is a conceptual diagram of pure data and control data transmission of a micro earth station according to the present invention.

Claims

A receiver 20 having one demodulator 4 and a protector 5 for transmitting a received signal to the microprocessor 8, and a transmitter 30 having a D / A converter 15 and a local oscillator 13; In a micro earth station of a satellite communication system, a detector 16 for checking control data present in one frame is connected between the decoder 5 and the microprocessor 8, and one end of the detector 16 is connected. The miniature earth station of a satellite communication system, characterized in that the output frequency of the local oscillator 13, which is the transmitter 30, connected to the input terminal of the D / A converter 15 to convert the output frequency.

In the small earth station data transmission method of a satellite communication system that transmits unique data such as flag, address, control, etc. and pure data and control data in one frame, control data is transmitted in one frame using data transmitted from a central station. And miniature earth station data transmission method of a satellite communication system characterized in that divided and transmitted pure data

※ Note: The disclosure is based on the initial application.