JPS555905B2 - - Google Patents

Info

Publication number
JPS555905B2
JPS555905B2 JP2906174A JP2906174A JPS555905B2 JP S555905 B2 JPS555905 B2 JP S555905B2 JP 2906174 A JP2906174 A JP 2906174A JP 2906174 A JP2906174 A JP 2906174A JP S555905 B2 JPS555905 B2 JP S555905B2
Authority
JP
Japan
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.)
Expired
Application number
JP2906174A
Other languages
Japanese (ja)
Other versions
JPS50122804A (fr
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 filed Critical
Priority to JP2906174A priority Critical patent/JPS555905B2/ja
Publication of JPS50122804A publication Critical patent/JPS50122804A/ja
Publication of JPS555905B2 publication Critical patent/JPS555905B2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Small-Scale Networks (AREA)
  • Bidirectional Digital Transmission (AREA)
  • Dc Digital Transmission (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
JP2906174A 1974-03-15 1974-03-15 Expired JPS555905B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2906174A JPS555905B2 (fr) 1974-03-15 1974-03-15

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2906174A JPS555905B2 (fr) 1974-03-15 1974-03-15

Publications (2)

Publication Number Publication Date
JPS50122804A JPS50122804A (fr) 1975-09-26
JPS555905B2 true JPS555905B2 (fr) 1980-02-12

Family

ID=12265840

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2906174A Expired JPS555905B2 (fr) 1974-03-15 1974-03-15

Country Status (1)

Country Link
JP (1) JPS555905B2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50155114A (fr) * 1974-06-03 1975-12-15
JPS51147206A (en) * 1975-06-13 1976-12-17 Yokogawa Hokushin Electric Corp Data communication system employing photocoupler
JPS5347712A (en) * 1976-10-14 1978-04-28 Nippon Esu Efu Kk Signal transmission line using photo coupler
US4326287A (en) * 1980-06-30 1982-04-20 International Business Machines Corp. Two wire bi-directional digital telephone link
JPS5792951A (en) * 1980-12-02 1982-06-09 Tokyo Electric Power Co Inc:The Signal transmission system
JPS60251739A (ja) * 1984-05-29 1985-12-12 Tabai Esupetsuku Kk 信号伝送方法及び装置

Also Published As

Publication number Publication date
JPS50122804A (fr) 1975-09-26

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