JPS5793433A - Data transfer system - Google Patents

Data transfer system

Info

Publication number
JPS5793433A
JPS5793433A JP16805380A JP16805380A JPS5793433A JP S5793433 A JPS5793433 A JP S5793433A JP 16805380 A JP16805380 A JP 16805380A JP 16805380 A JP16805380 A JP 16805380A JP S5793433 A JPS5793433 A JP S5793433A
Authority
JP
Japan
Prior art keywords
output
data
message
transfer
buffer
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
JP16805380A
Other languages
Japanese (ja)
Other versions
JPS5939770B2 (en
Inventor
Hiroshi Honma
Kunio Fujisaki
Itsuyuki Satou
Ken Ito
Susumu Maruyama
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 JP55168053A priority Critical patent/JPS5939770B2/en
Publication of JPS5793433A publication Critical patent/JPS5793433A/en
Publication of JPS5939770B2 publication Critical patent/JPS5939770B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/50—Circuit switching systems, i.e. systems in which the path is physically permanent during the communication

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer And Data Communications (AREA)
  • Communication Control (AREA)
  • Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)

Abstract

PURPOSE:To omit the transfer of information in unnecessary status by a terminal device, by adding information which indicates whether the transfer request of the next data is performed when the data is received in transferring the data from a central device or after waiting the end of output processing. CONSTITUTION:A control bit is added at the head of an output message from a central device, and when this is 1, it shows a mode not requiring the transfer of terminal status information, i.e., in case of special message such as telegraphic message exchange, and when it is 0, it means a normal message, i.e., a mode requiring the transfer of terminal status information. This output data passes through a channel 50 and enters a transmission/reception circuit 31, a program controlling mechanism 32 is started and the usage state of an output buffer 36 is checked. If it is in use, the output message is stored in an output buffer 33 by waiting the end, and the controlling mechanism 32 waites for the data from the buffer 33 after the output of an output device is possible, and when the control bit is checked and it is zero, the end report is waited from the output device, and when it is 1, the output request of the next data is transmitted to the central device for the advancing processing.
JP55168053A 1980-12-01 1980-12-01 Data transfer method Expired JPS5939770B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55168053A JPS5939770B2 (en) 1980-12-01 1980-12-01 Data transfer method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55168053A JPS5939770B2 (en) 1980-12-01 1980-12-01 Data transfer method

Publications (2)

Publication Number Publication Date
JPS5793433A true JPS5793433A (en) 1982-06-10
JPS5939770B2 JPS5939770B2 (en) 1984-09-26

Family

ID=15860950

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55168053A Expired JPS5939770B2 (en) 1980-12-01 1980-12-01 Data transfer method

Country Status (1)

Country Link
JP (1) JPS5939770B2 (en)

Also Published As

Publication number Publication date
JPS5939770B2 (en) 1984-09-26

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