JPS56149135A - Duplex data reception system - Google Patents

Duplex data reception system

Info

Publication number
JPS56149135A
JPS56149135A JP5163880A JP5163880A JPS56149135A JP S56149135 A JPS56149135 A JP S56149135A JP 5163880 A JP5163880 A JP 5163880A JP 5163880 A JP5163880 A JP 5163880A JP S56149135 A JPS56149135 A JP S56149135A
Authority
JP
Japan
Prior art keywords
data
received data
serial number
circuit
data reception
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
JP5163880A
Other languages
Japanese (ja)
Other versions
JPS6221462B2 (en
Inventor
Hitoshi Furuki
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP5163880A priority Critical patent/JPS56149135A/en
Publication of JPS56149135A publication Critical patent/JPS56149135A/en
Publication of JPS6221462B2 publication Critical patent/JPS6221462B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Hardware Redundancy (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

PURPOSE:To prevent the absence of received data in circuit switching by setting data from each circuit in a data buffer in each computer and by comparing it with the last received data in a common external storage device. CONSTITUTION:Data inputted from respective circuits are set in buffers 1 and 2 in computers A6 and B7, and then compared with the last received data in common external storage device 5. The information to be compared is a serial number given at the head of each data and when the difference between [this-time input data serial number] and [last received data serial number] is ''1'', the input data of a corresponding circuit is considered to be the first-comer and set in the received data area of device 5. Thus, the absence of received data in circuit switching is prevented.
JP5163880A 1980-04-21 1980-04-21 Duplex data reception system Granted JPS56149135A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5163880A JPS56149135A (en) 1980-04-21 1980-04-21 Duplex data reception system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5163880A JPS56149135A (en) 1980-04-21 1980-04-21 Duplex data reception system

Publications (2)

Publication Number Publication Date
JPS56149135A true JPS56149135A (en) 1981-11-18
JPS6221462B2 JPS6221462B2 (en) 1987-05-13

Family

ID=12892381

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5163880A Granted JPS56149135A (en) 1980-04-21 1980-04-21 Duplex data reception system

Country Status (1)

Country Link
JP (1) JPS56149135A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61224640A (en) * 1985-03-29 1986-10-06 Hitachi Ltd Data block transfer system
JPH01120932A (en) * 1987-11-04 1989-05-12 Nec Corp Switching system of remote terminal control system
JPH01175036U (en) * 1988-05-30 1989-12-13
JPH02262736A (en) * 1989-04-03 1990-10-25 Takaoka Electric Mfg Co Ltd Communication system by duplex data communication media
US7043574B2 (en) 2002-08-14 2006-05-09 Nec Corporation Computer system and frame transmitting method
JP2006295667A (en) * 2005-04-13 2006-10-26 Fuji Electric Fa Components & Systems Co Ltd Receiving method and apparatus in ring type duplicated network

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61224640A (en) * 1985-03-29 1986-10-06 Hitachi Ltd Data block transfer system
JPH01120932A (en) * 1987-11-04 1989-05-12 Nec Corp Switching system of remote terminal control system
JPH01175036U (en) * 1988-05-30 1989-12-13
JPH02262736A (en) * 1989-04-03 1990-10-25 Takaoka Electric Mfg Co Ltd Communication system by duplex data communication media
US7043574B2 (en) 2002-08-14 2006-05-09 Nec Corporation Computer system and frame transmitting method
JP2006295667A (en) * 2005-04-13 2006-10-26 Fuji Electric Fa Components & Systems Co Ltd Receiving method and apparatus in ring type duplicated network
JP4655733B2 (en) * 2005-04-13 2011-03-23 富士電機システムズ株式会社 Receiving method and apparatus in ring-type duplex network

Also Published As

Publication number Publication date
JPS6221462B2 (en) 1987-05-13

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