KR980007253A - Serial communication device - Google Patents

Serial communication device Download PDF

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Publication number
KR980007253A
KR980007253A KR1019960021019A KR19960021019A KR980007253A KR 980007253 A KR980007253 A KR 980007253A KR 1019960021019 A KR1019960021019 A KR 1019960021019A KR 19960021019 A KR19960021019 A KR 19960021019A KR 980007253 A KR980007253 A KR 980007253A
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KR
South Korea
Prior art keywords
frequency
output
voltage
serial communication
dual port
Prior art date
Application number
KR1019960021019A
Other languages
Korean (ko)
Inventor
송종태
Original Assignee
이종수
엘지산전 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 이종수, 엘지산전 주식회사 filed Critical 이종수
Priority to KR1019960021019A priority Critical patent/KR980007253A/en
Publication of KR980007253A publication Critical patent/KR980007253A/en

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Abstract

본 발명은 시스템과 시스템 사이의 데이터를 직렬전송하는 직력 통신장치에 관한 것으로, 특히 데이터 전송시 외부 내란에 강하도록 하는 질력 통신장치에 관한 것으로, 잔송할 전압형태의 디지털 데이터의 각 비트를 특정 주파수 형태로 변환하여 상대 시스템으로 전송하므로써 외란에 강하고, 그에 따라 전송거리가 멀더라도 주파수의 변동은 없으므로 별 다른 모듈이 필요없기 장거리 전송이 가능하게 되며, 진렬 전송포트를 가지지 않는 씨피유의 사용이 가능한 효과가 있게 된다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a serial communication device for serially transmitting data between a system and a system, and more particularly, to a qualitative communication device that is strong against external disturbances during data transmission. It is strong to disturbance by converting to form and transmitting to counterpart system. Therefore, even if the transmission distance is far, there is no change of frequency, so it is possible to transmit long distance without any module. Will be.

Description

직렬 통신장치Serial communication device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제2도는 본 발명 직렬 통신장치를 나타낸 블럭도.2 is a block diagram showing a serial communication device of the present invention.

Claims (2)

입출력되는 전송 데이터를 롬(210)에 저장된 프로그램에 의해 해독하는 씨피유(200)와, 상기 전송 데이터를 해독할 프로그램을 저장하고 있는 롬(210)과, 상기 전송 데이터를 저장하는 램(220)과, 상기 씨피유(200)의 입출력을 담당하는 듀얼포트 램(240)과, 상기 듀얼포트 램(240)의 저장된 데이터의 입출력 번지를 지정하는 오실레이터(250)와, 상기 듀얼포트 램(240)으로부터 출력되는 디지털 레벨의 전송 데이터를 특정 전압레벨로 증폭하여 출력함과 아울러 전압/주파수 변환부(270)로부터 인가되는 주파수 신호를 디지탈 전압레벨로 변환하여 상기 듀얼포트 램(240)으로 출력하는 신호 변환부(260)와, 상기 신호 변환부(270)로부터 출력되는 전압레벨을 주파수 형태로 변환하여 상대 시스템(280)으로 전송함과 아울어 상대 시스템(280)으로부터 전송되어진 주파수를 전압 형태로 변환하여 출력하는 전압/주파수 변환부(270)로 구성하여 된 것을 특징으로 하는 직렬 통신장치.CPI 200 for decoding input / output transmission data by a program stored in ROM 210, ROM 210 for storing a program for decoding the transmission data, RAM 220 for storing the transmission data, A dual port RAM 240 that is responsible for input / output of the CPI 200, an oscillator 250 that designates an input / output address of the stored data of the dual port RAM 240, and an output from the dual port RAM 240; A signal conversion unit for amplifying and outputting the transmission data of the digital level to a specific voltage level, and converts the frequency signal applied from the voltage / frequency conversion unit 270 to a digital voltage level and outputs it to the dual port RAM 240. 260 and converting the voltage level output from the signal converter 270 into a frequency form to transmit to the counterpart system 280, as well as the frequency transmitted from the counterpart system 280. Serial communication device, characterized in that by the configuration of a voltage / frequency converter 270 for converting the output in the form. 제1항에 있어서, 전압/주파수 변환부(270)는 입력되는 전압레벨형태의 디지털 데이터를 각 비트마다 특정 주파수로 변환하는 것을 특징으로 하는 직렬 통신장치.The serial communication apparatus according to claim 1, wherein the voltage / frequency converting section (270) converts the digital data in the form of an input voltage level into a specific frequency for each bit.
KR1019960021019A 1996-06-12 1996-06-12 Serial communication device KR980007253A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960021019A KR980007253A (en) 1996-06-12 1996-06-12 Serial communication device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960021019A KR980007253A (en) 1996-06-12 1996-06-12 Serial communication device

Publications (1)

Publication Number Publication Date
KR980007253A true KR980007253A (en) 1998-03-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019960021019A KR980007253A (en) 1996-06-12 1996-06-12 Serial communication device

Country Status (1)

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KR (1) KR980007253A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4346452A (en) * 1978-09-05 1982-08-24 Motorola, Inc. NRZ/Biphase microcomputer serial communication logic
JPS6271351A (en) * 1985-09-24 1987-04-02 Nec Corp Serial data transfer control system
JPH05227222A (en) * 1991-12-19 1993-09-03 Yamaha Corp Data transmission speed converter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4346452A (en) * 1978-09-05 1982-08-24 Motorola, Inc. NRZ/Biphase microcomputer serial communication logic
JPS6271351A (en) * 1985-09-24 1987-04-02 Nec Corp Serial data transfer control system
JPH05227222A (en) * 1991-12-19 1993-09-03 Yamaha Corp Data transmission speed converter

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