JPS57176433A - Absolute time synchronizing system for decentralized processing system - Google Patents

Absolute time synchronizing system for decentralized processing system

Info

Publication number
JPS57176433A
JPS57176433A JP56061048A JP6104881A JPS57176433A JP S57176433 A JPS57176433 A JP S57176433A JP 56061048 A JP56061048 A JP 56061048A JP 6104881 A JP6104881 A JP 6104881A JP S57176433 A JPS57176433 A JP S57176433A
Authority
JP
Japan
Prior art keywords
time
local
absolute time
time information
center
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
JP56061048A
Other languages
Japanese (ja)
Inventor
Toshikazu Katsuki
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.)
Omron Corp
Original Assignee
Tateisi Electronics Co
Omron Tateisi Electronics Co
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 Tateisi Electronics Co, Omron Tateisi Electronics Co filed Critical Tateisi Electronics Co
Priority to JP56061048A priority Critical patent/JPS57176433A/en
Publication of JPS57176433A publication Critical patent/JPS57176433A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/04—Generating or distributing clock signals or signals derived directly therefrom

Landscapes

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

Abstract

PURPOSE:To obtain synchronism for absolute time for each local device, by transmitting time information from a center device to each local device and summing the transmission time between each local device and the center device which is known in advance at each local device. CONSTITUTION:A center computer 1 and a communication controller 2 constitute a center device. n sets of local processors 3, LPU1-LPUn are provided and connected to a terminal device (DTE)4. The communication device 2 and the local processors 3 are connected with communication lines L1 Ln and the transmission speed is different. Assuming the transmission time of the line Ln as tn, when the time information is transmitted at a time of T1 from the device 2, the time of arrival of the time information to the local processors LPU1 LPUn is respectively T1+T1-T1+tn, and they are defined as the time information, respectively. Thus, the synchronism with absolute time can be taken, regardless of the renewal at each local processor with different time.
JP56061048A 1981-04-22 1981-04-22 Absolute time synchronizing system for decentralized processing system Pending JPS57176433A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56061048A JPS57176433A (en) 1981-04-22 1981-04-22 Absolute time synchronizing system for decentralized processing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56061048A JPS57176433A (en) 1981-04-22 1981-04-22 Absolute time synchronizing system for decentralized processing system

Publications (1)

Publication Number Publication Date
JPS57176433A true JPS57176433A (en) 1982-10-29

Family

ID=13159948

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56061048A Pending JPS57176433A (en) 1981-04-22 1981-04-22 Absolute time synchronizing system for decentralized processing system

Country Status (1)

Country Link
JP (1) JPS57176433A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60239819A (en) * 1984-05-15 1985-11-28 Fuji Xerox Co Ltd Time correcting device for information processor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5452922A (en) * 1977-10-05 1979-04-25 Toshiba Corp Data preset system
JPS5769496A (en) * 1980-10-16 1982-04-28 Mitsubishi Electric Corp Remote controller

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5452922A (en) * 1977-10-05 1979-04-25 Toshiba Corp Data preset system
JPS5769496A (en) * 1980-10-16 1982-04-28 Mitsubishi Electric Corp Remote controller

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60239819A (en) * 1984-05-15 1985-11-28 Fuji Xerox Co Ltd Time correcting device for information processor

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