JPS5795736A - Two-way data transmission device - Google Patents

Two-way data transmission device

Info

Publication number
JPS5795736A
JPS5795736A JP17178280A JP17178280A JPS5795736A JP S5795736 A JPS5795736 A JP S5795736A JP 17178280 A JP17178280 A JP 17178280A JP 17178280 A JP17178280 A JP 17178280A JP S5795736 A JPS5795736 A JP S5795736A
Authority
JP
Japan
Prior art keywords
transmission
data
clock
transceivers
places
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
JP17178280A
Other languages
Japanese (ja)
Inventor
Masanori Okada
Makoto Usui
Takeo Fujimoto
Takashi Muratani
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP17178280A priority Critical patent/JPS5795736A/en
Publication of JPS5795736A publication Critical patent/JPS5795736A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/16—Half-duplex systems; Simplex/duplex switching; Transmission of break signals non-automatically inverting the direction of transmission

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Bidirectional Digital Transmission (AREA)

Abstract

PURPOSE:To reduce the number of transmission lines, by providing one control pulse generator and a required number of transceivers in separated places A and B respectively and by controlling places A and B by a transmission/receiving mode designating signal so that one of them is set to the receiving side when the other is the transmission side. CONSTITUTION:A control pulse generator CPG and transceivers TR1-TR4 are provided in places A and B respectively, and control pulse generators CPG are connected by two timing clock lines La and Lb, and transceivers are connected to each other by data transmission lines L1-L4 respectively. A clock CLK, which determines the period of transmission data bits and a clock CLK2 which determines the data transmission start timing are inputted to the control pulse generator CPG to generate transmission clocks Qa-Qc, a receiving clock -CLK1, and a transmission/receiving mode designating signal Qd repeating H and L levels. The transceiver TR has a data selector 62, which transmits N-bit parallel data in serial by clocks Qa-Qc, and a shift register, which outputs received serial data as parallel data by the clock -CLK1, and inserts or removes in inverter 50 into or from the circuit of the signal Qd, thus controlling transceivers in places A and B so that one is set to the receiving side when the other is the transmission side.
JP17178280A 1980-12-05 1980-12-05 Two-way data transmission device Pending JPS5795736A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17178280A JPS5795736A (en) 1980-12-05 1980-12-05 Two-way data transmission device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17178280A JPS5795736A (en) 1980-12-05 1980-12-05 Two-way data transmission device

Publications (1)

Publication Number Publication Date
JPS5795736A true JPS5795736A (en) 1982-06-14

Family

ID=15929576

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17178280A Pending JPS5795736A (en) 1980-12-05 1980-12-05 Two-way data transmission device

Country Status (1)

Country Link
JP (1) JPS5795736A (en)

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