JPS5668043A - Asynchronous full duplex signal transmitter - Google Patents

Asynchronous full duplex signal transmitter

Info

Publication number
JPS5668043A
JPS5668043A JP14328779A JP14328779A JPS5668043A JP S5668043 A JPS5668043 A JP S5668043A JP 14328779 A JP14328779 A JP 14328779A JP 14328779 A JP14328779 A JP 14328779A JP S5668043 A JPS5668043 A JP S5668043A
Authority
JP
Japan
Prior art keywords
circuit
buffer
output
data
signal
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
JP14328779A
Other languages
Japanese (ja)
Inventor
Shigeru Oba
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP14328779A priority Critical patent/JPS5668043A/en
Publication of JPS5668043A publication Critical patent/JPS5668043A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
    • G06F13/4265—Bus transfer protocol, e.g. handshake; Synchronisation on a point to point bus
    • G06F13/4269—Bus transfer protocol, e.g. handshake; Synchronisation on a point to point bus using a handshaking protocol, e.g. Centronics connection

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Bidirectional Digital Transmission (AREA)
  • Selective Calling Equipment (AREA)

Abstract

PURPOSE:To use a transmitter for any of a computer, sequence controller and relay board by performing duplex signal transmission asynchronously and simultaneously between a process controller and the outside. CONSTITUTION:With the output instruction of arithmetic controller 20, data from memory 21 is set in digital output circuit 23. Simultaneously, circuit 23 outputs an output ready signal to output-ready receiving circuit 26, which opens the gate of output buffer 27 to transfer the data in circuit 23 to buffer 27. The data in buffer is converted 28 into a serial signal, which is outputted to cable 39 via F/M modulator 37. The signal supplied to F/M demodulator 38 via cable 40, on the other hand, is demodulated 38 and then converted into a parallel signal, which while set in input buffer 31, is checked by error check circuit 33 in terms of the existence of a transfer error. The data, when set in buffer 31, is transferred to digital input circuit 24 and written in memory 21 by the instruction of controller 20.
JP14328779A 1979-11-07 1979-11-07 Asynchronous full duplex signal transmitter Pending JPS5668043A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14328779A JPS5668043A (en) 1979-11-07 1979-11-07 Asynchronous full duplex signal transmitter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14328779A JPS5668043A (en) 1979-11-07 1979-11-07 Asynchronous full duplex signal transmitter

Publications (1)

Publication Number Publication Date
JPS5668043A true JPS5668043A (en) 1981-06-08

Family

ID=15335212

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14328779A Pending JPS5668043A (en) 1979-11-07 1979-11-07 Asynchronous full duplex signal transmitter

Country Status (1)

Country Link
JP (1) JPS5668043A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6213956A (en) * 1985-07-11 1987-01-22 Sekisui Chem Co Ltd Remote control system for hot-water supplier
JPH05236250A (en) * 1992-07-29 1993-09-10 Canon Inc Image communication device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6213956A (en) * 1985-07-11 1987-01-22 Sekisui Chem Co Ltd Remote control system for hot-water supplier
JPH05236250A (en) * 1992-07-29 1993-09-10 Canon Inc Image communication device

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