JPS59201535A - アナログ・デイジタル通信方法およびその装置 - Google Patents

アナログ・デイジタル通信方法およびその装置

Info

Publication number
JPS59201535A
JPS59201535A JP7647983A JP7647983A JPS59201535A JP S59201535 A JPS59201535 A JP S59201535A JP 7647983 A JP7647983 A JP 7647983A JP 7647983 A JP7647983 A JP 7647983A JP S59201535 A JPS59201535 A JP S59201535A
Authority
JP
Japan
Prior art keywords
analog
communication device
digital
digital signal
current value
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP7647983A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6323692B2 (enrdf_load_stackoverflow
Inventor
Haruo Yamauchi
山内　治男
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Azbil Corp
Original Assignee
Azbil Corp
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 Azbil Corp filed Critical Azbil Corp
Priority to JP7647983A priority Critical patent/JPS59201535A/ja
Publication of JPS59201535A publication Critical patent/JPS59201535A/ja
Publication of JPS6323692B2 publication Critical patent/JPS6323692B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/02—Electric signal transmission systems in which the signal transmitted is magnitude of current or voltage

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Small-Scale Networks (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Dc Digital Transmission (AREA)
JP7647983A 1983-04-30 1983-04-30 アナログ・デイジタル通信方法およびその装置 Granted JPS59201535A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7647983A JPS59201535A (ja) 1983-04-30 1983-04-30 アナログ・デイジタル通信方法およびその装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7647983A JPS59201535A (ja) 1983-04-30 1983-04-30 アナログ・デイジタル通信方法およびその装置

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP9009689A Division JPH01302928A (ja) 1989-04-10 1989-04-10 アナログ・デイジタル通信方法およびその装置

Publications (2)

Publication Number Publication Date
JPS59201535A true JPS59201535A (ja) 1984-11-15
JPS6323692B2 JPS6323692B2 (enrdf_load_stackoverflow) 1988-05-17

Family

ID=13606325

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7647983A Granted JPS59201535A (ja) 1983-04-30 1983-04-30 アナログ・デイジタル通信方法およびその装置

Country Status (1)

Country Link
JP (1) JPS59201535A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0298237A (ja) * 1988-10-05 1990-04-10 Yokogawa Electric Corp デジタル信号重畳式２線式信号伝送装置
DE4021258A1 (de) * 1989-07-04 1991-01-17 Hitachi Ltd Feldsensor-kommunikationssystem
US5184121A (en) * 1989-03-03 1993-02-02 Hitachi, Ltd. Field sensor communication method and system
US5717385A (en) * 1990-11-28 1998-02-10 Hitachi, Ltd. Field bus system and virtual field apparatus

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5652958A (en) * 1979-10-06 1981-05-12 Meisei Electric Co Ltd Control signal transmission system of key telephone system
JPS56140494A (en) * 1980-04-02 1981-11-02 Hokushin Electric Works Process amount signal transmitting system
JPS56153497A (en) * 1980-04-30 1981-11-27 Fuji Electric Co Ltd Two-wire type measured value transmission system
JPS5829097A (ja) * 1981-08-15 1983-02-21 富士電機株式会社 二線式測定装置
JPS5848198A (ja) * 1981-09-16 1983-03-22 株式会社東芝 ２線式伝送装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5652958A (en) * 1979-10-06 1981-05-12 Meisei Electric Co Ltd Control signal transmission system of key telephone system
JPS56140494A (en) * 1980-04-02 1981-11-02 Hokushin Electric Works Process amount signal transmitting system
JPS56153497A (en) * 1980-04-30 1981-11-27 Fuji Electric Co Ltd Two-wire type measured value transmission system
JPS5829097A (ja) * 1981-08-15 1983-02-21 富士電機株式会社 二線式測定装置
JPS5848198A (ja) * 1981-09-16 1983-03-22 株式会社東芝 ２線式伝送装置

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0298237A (ja) * 1988-10-05 1990-04-10 Yokogawa Electric Corp デジタル信号重畳式２線式信号伝送装置
US5184121A (en) * 1989-03-03 1993-02-02 Hitachi, Ltd. Field sensor communication method and system
DE4021258A1 (de) * 1989-07-04 1991-01-17 Hitachi Ltd Feldsensor-kommunikationssystem
US5469156A (en) * 1989-07-04 1995-11-21 Hitachi, Ltd. Field sensor communication system
US5717385A (en) * 1990-11-28 1998-02-10 Hitachi, Ltd. Field bus system and virtual field apparatus

Also Published As

Publication number Publication date
JPS6323692B2 (enrdf_load_stackoverflow) 1988-05-17

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