JPS57107647A - Signal transmission and reception system - Google Patents

Signal transmission and reception system

Info

Publication number
JPS57107647A
JPS57107647A JP55186447A JP18644780A JPS57107647A JP S57107647 A JPS57107647 A JP S57107647A JP 55186447 A JP55186447 A JP 55186447A JP 18644780 A JP18644780 A JP 18644780A JP S57107647 A JPS57107647 A JP S57107647A
Authority
JP
Japan
Prior art keywords
transmission
master station
power supplies
signal
station
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.)
Pending
Application number
JP55186447A
Other languages
Japanese (ja)
Inventor
Kenshichiro Mishima
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP55186447A priority Critical patent/JPS57107647A/en
Publication of JPS57107647A publication Critical patent/JPS57107647A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2589—Bidirectional transmission

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Bidirectional Digital Transmission (AREA)
  • Dc Digital Transmission (AREA)
  • Small-Scale Networks (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

PURPOSE:To use a power supply with less capacity, by decreasing a transmission signal current, through the provision of two constant voltage power supplies for transmission use at a master station. CONSTITUTION:A master station A is provided with positive and negative power supplies 1, 2. The transmission from the master station operates a relay coil 7 with a signal of a transmission circuit and the power supplies 1, 2 are switched with a contact 6. Thus, a transmission signal shown in Figure is transmitted to a slave station B. The reception of a return signal from the slave station B is made by switching the contact 6 to the side of a light emitting element 3. When a photodetector 20 turns on or off at the slave station B, the element 3 at the master station A turns on or off, and the return signal as shown in Figure can be received by detecting the switching of the element 3 at a photodetector 4.
JP55186447A 1980-12-25 1980-12-25 Signal transmission and reception system Pending JPS57107647A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55186447A JPS57107647A (en) 1980-12-25 1980-12-25 Signal transmission and reception system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55186447A JPS57107647A (en) 1980-12-25 1980-12-25 Signal transmission and reception system

Publications (1)

Publication Number Publication Date
JPS57107647A true JPS57107647A (en) 1982-07-05

Family

ID=16188607

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55186447A Pending JPS57107647A (en) 1980-12-25 1980-12-25 Signal transmission and reception system

Country Status (1)

Country Link
JP (1) JPS57107647A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58224705A (en) * 1982-06-24 1983-12-27 三共株式会社 Insecticide for wood

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52124803A (en) * 1976-04-12 1977-10-20 Mitsubishi Electric Corp Signal send/receiving

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52124803A (en) * 1976-04-12 1977-10-20 Mitsubishi Electric Corp Signal send/receiving

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58224705A (en) * 1982-06-24 1983-12-27 三共株式会社 Insecticide for wood
JPH0224201B2 (en) * 1982-06-24 1990-05-28 Sankyo Co

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