JPS55136750A - Scanning control system for line control word in communication control unit - Google Patents

Scanning control system for line control word in communication control unit

Info

Publication number
JPS55136750A
JPS55136750A JP4466379A JP4466379A JPS55136750A JP S55136750 A JPS55136750 A JP S55136750A JP 4466379 A JP4466379 A JP 4466379A JP 4466379 A JP4466379 A JP 4466379A JP S55136750 A JPS55136750 A JP S55136750A
Authority
JP
Japan
Prior art keywords
line
scanning
control
word
line control
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
JP4466379A
Other languages
Japanese (ja)
Inventor
Sumio Matsuda
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP4466379A priority Critical patent/JPS55136750A/en
Publication of JPS55136750A publication Critical patent/JPS55136750A/en
Pending 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
    • H04L12/52—Circuit switching systems, i.e. systems in which the path is physically permanent during the communication using time division techniques
    • H04L12/525—Circuit switching systems, i.e. systems in which the path is physically permanent during the communication using time division techniques involving a stored program control

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Communication Control (AREA)

Abstract

PURPOSE:To prevent the lowering of efficiency due to ineffective scanning, by designating the number of running words per line for the line control words performing operation instruction/report with the line correspondence section. CONSTITUTION:The line scanning control circuit 4 outputs the scanning instruction in order from the youngest number of the line control words every line number sequentially, the information of the line control word scanned is fed to the line correspondence section and processing is executed. When the address of the line control words to be scanned reaches a limit value, the scanning stop instruction of this line is given to the scanning circuit 3 from the scanning limit control circuit 2 to stop the scanning of this line after that, and the scanning to the next line is started. By repeating the operation above, the scanning of each line control word is made periodically.
JP4466379A 1979-04-12 1979-04-12 Scanning control system for line control word in communication control unit Pending JPS55136750A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4466379A JPS55136750A (en) 1979-04-12 1979-04-12 Scanning control system for line control word in communication control unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4466379A JPS55136750A (en) 1979-04-12 1979-04-12 Scanning control system for line control word in communication control unit

Publications (1)

Publication Number Publication Date
JPS55136750A true JPS55136750A (en) 1980-10-24

Family

ID=12697680

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4466379A Pending JPS55136750A (en) 1979-04-12 1979-04-12 Scanning control system for line control word in communication control unit

Country Status (1)

Country Link
JP (1) JPS55136750A (en)

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