KR870006761A - Information transmission system - Google Patents

Information transmission system Download PDF

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Publication number
KR870006761A
KR870006761A KR860011383A KR860011383A KR870006761A KR 870006761 A KR870006761 A KR 870006761A KR 860011383 A KR860011383 A KR 860011383A KR 860011383 A KR860011383 A KR 860011383A KR 870006761 A KR870006761 A KR 870006761A
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KR
South Korea
Prior art keywords
controlled station
station apparatus
transmission
signal
controlled
Prior art date
Application number
KR860011383A
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Korean (ko)
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KR910000699B1 (en
Inventor
다께오 도다
Original Assignee
와다리 스기이찌로
가부시끼가이샤 도시바
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Publication date
Application filed by 와다리 스기이찌로, 가부시끼가이샤 도시바 filed Critical 와다리 스기이찌로
Publication of KR870006761A publication Critical patent/KR870006761A/en
Application granted granted Critical
Publication of KR910000699B1 publication Critical patent/KR910000699B1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/02—Arrangements for interconnection not involving centralised switching involving a common line for all parties
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Selective Calling Equipment (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Small-Scale Networks (AREA)

Abstract

내용 없음.No content.

Description

정보전송 시스템Information transmission system

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

제1도는 본 발명에 의한 정보전송 시스템의 실시예를 예시하는 블록도.1 is a block diagram illustrating an embodiment of an information transmission system according to the present invention.

제2도는 본 발명의 동작을 설명하기 위한 타이밍 챠트.2 is a timing chart for explaining the operation of the present invention.

제3도는 본 발명에 적용된 모국(master station)의 다른 실시예를 예시하는 블록도.3 is a block diagram illustrating another embodiment of a master station applied to the present invention.

Claims (5)

제어국 장치 및 복수의 피제어국 장치들이 전송로를 사용함으로써 연결된 정보전송 시스템에 있어서 상기 각 피제어국 장치가 분기시스템을 사용함으로써 상기 전송로에 연결되고, 각 제어국 장치와 피제어국 장치들이 송신신호를 송신하는 송신기와, 상기 송신신호를 변조하는 변조기와 전송된 신호를 복조하는 복조기와, 복조된 신호를 수신하는 수신기를 포함하고, 논리합회로가 상기 송신기와 상기 제어국 장치의 상기 변조기간에 설비되고, 상기 송신기로부터의 송신요구 신호와 상기 피제어국 장치들의 각각으로부터의 변조신호가 상기 논리합회로로 공급되고, 상기 변조기로 새로운 송신요구 신호로서 공급될 때에 상기 논리합회로의 출력이 발생되고, 상기 제어국 장치가 어느 상기 피제어국 장치로부터의 변조신호를 수신하였을 때에 상기 제어국 장치가 모든 상기 피제어국 장치들로 캐리어 신호를 보내고 상기 각 피제어국 장치가 다른 피제어국 장치가 송신중이 아닐 때에 캐리어 신호를 검출하고 송신을 개시하고 그러므로 캐리어 신호가 상기 전송로상에 없을 때에 상기 피제어국 장치가 송신을 개시하고, 한편 캐리어 신호가 있을 때에 상기 피제어국 장치가 다른 어느 피제어국이 송신중임을 인식하고, 상기 캐리어 신호가 없는 조건하에 어느 피제어국 장치가 송신을 개시한 후에는 상기 피제어국 장치는 상기 캐리어 신호의 유무에 관계없이 송신을 계속하는 것을 특징으로 하는 정보전송시스템.In an information transmission system in which a control station device and a plurality of controlled station devices are connected by using a transmission path, each of the controlled station devices is connected to the transmission path by using a branching system, and each control station device and a controlled station device And a demodulator for demodulating the transmitted signal, a demodulator for demodulating the transmitted signal, and a receiver for receiving the demodulated signal. And the output of the logic sum circuit occurs when a transmission request signal from the transmitter and a modulation signal from each of the controlled station devices are supplied to the logic sum circuit, and supplied as a new transmission request signal to the modulator. When the control station apparatus receives a modulated signal from any of the controlled station apparatuses. The fishery apparatus sends a carrier signal to all the controlled station apparatuses, and each controlled station apparatus detects a carrier signal and starts transmission when the other controlled station apparatus is not transmitting, so that the carrier signal is on the transmission path. The controlled station apparatus starts transmitting when not, and when there is a carrier signal, the controlled station apparatus recognizes that any other controlled station is transmitting, and any controlled station apparatus under the condition that there is no carrier signal. And after the transmission starts, the controlled station apparatus continues the transmission with or without the carrier signal. 상기 논리합회로와 다른 1조의 논리합회로를 설비하고 상기 제어국 장치의 상기 송신기로부터의 변조 펄스 입력과 상기 피제어국 장치로부터 수신한 복조 펄스 출력이 상기 1조의 논리합 회로의 입력으로서 공급될 때에 발생된 상기 1조의 논리합 회로의 출력을 공급하는 청구범위 제1항 기재의 정보전송 시스템.Generated when a set of logical sum circuits different from the logical sum circuit is provided and a modulation pulse input from the transmitter of the control station apparatus and a demodulated pulse output received from the controlled station apparatus are supplied as inputs of the set of logic sum circuits. The information transmission system according to claim 1, which supplies an output of the set of logical sum circuits. 한쌍의 전송로가 사용될 때에 상기 제어국측과 상기 피제어국측의 변조주파수가 서로 다른 청구범위 제1항 기재의 정보 전송 시스템.The information transmission system according to claim 1, wherein a modulation frequency of the control station side and the controlled station side is different when a pair of transmission paths are used. 상기 제어국 장치의 송신레벨을 최고 레벨로 설정한 청구범위 제1항기재의 정보전송 시스템.The information transmission system according to claim 1, wherein the transmission level of the control station apparatus is set to the highest level. 상기 피제어국 장치의 송신레벨이 반고정 조정수단으로 조정되는 청구범위 제1항 기재의 정보전송 시스템.The information transmission system according to claim 1, wherein the transmission level of the controlled station apparatus is adjusted by semi-fixed adjustment means. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019860011383A 1985-12-27 1986-12-27 Data information transmission system KR910000699B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP60-296626 1985-12-27
JP60296626A JPH0632518B2 (en) 1985-12-27 1985-12-27 Information transmission system

Publications (2)

Publication Number Publication Date
KR870006761A true KR870006761A (en) 1987-07-14
KR910000699B1 KR910000699B1 (en) 1991-01-31

Family

ID=17835979

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019860011383A KR910000699B1 (en) 1985-12-27 1986-12-27 Data information transmission system

Country Status (3)

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JP (1) JPH0632518B2 (en)
KR (1) KR910000699B1 (en)
AU (1) AU573998B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116974233A (en) * 2023-09-19 2023-10-31 西安热工研究院有限公司 Dual-channel Profibus-DP master station system and design method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5444906B2 (en) * 2009-07-17 2014-03-19 富士電機株式会社 Plant monitoring system, plant monitoring device, terminal device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4642630A (en) * 1982-12-28 1987-02-10 At&T Bell Laboratories Method and apparatus for bus contention resolution
JPS6162263A (en) * 1984-09-04 1986-03-31 Toshiba Corp Information transmitting system
JPS61145995A (en) * 1984-12-20 1986-07-03 Toshiba Corp Line concentration and line distribution system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116974233A (en) * 2023-09-19 2023-10-31 西安热工研究院有限公司 Dual-channel Profibus-DP master station system and design method
CN116974233B (en) * 2023-09-19 2024-01-19 西安热工研究院有限公司 Dual-channel Profibus-DP master station system and design method

Also Published As

Publication number Publication date
AU6703586A (en) 1987-07-02
KR910000699B1 (en) 1991-01-31
JPS62155696A (en) 1987-07-10
AU573998B2 (en) 1988-06-23
JPH0632518B2 (en) 1994-04-27

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