JPS55153452A - Line adaptor - Google Patents

Line adaptor

Info

Publication number
JPS55153452A
JPS55153452A JP6093679A JP6093679A JPS55153452A JP S55153452 A JPS55153452 A JP S55153452A JP 6093679 A JP6093679 A JP 6093679A JP 6093679 A JP6093679 A JP 6093679A JP S55153452 A JPS55153452 A JP S55153452A
Authority
JP
Japan
Prior art keywords
chr
control section
transmission
line
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
JP6093679A
Other languages
Japanese (ja)
Inventor
Tetsuo Miura
Hiroyuki Matsumoto
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
Nippon Telegraph and Telephone Corp
Original Assignee
NEC Corp
Nippon Telegraph and Telephone 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 Telegraph and Telephone Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP6093679A priority Critical patent/JPS55153452A/en
Publication of JPS55153452A publication Critical patent/JPS55153452A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L13/00—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00

Landscapes

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

Abstract

PURPOSE:To remarkably reduce the amount of processing of the line control section or upper-rank unit, by providing the means to compare the transmission character CHR given from the line control section with specified CHR and the circuit producing the error control code. CONSTITUTION:When the start of transmissin is instructed from the line control section to the line adaptor section 1 and the transmission CHR is transferred to the transmission CHR buffer 5, the adaptor control section 2 instructs it to the CHR comparison circuit 3, which compares the content of the buffer 5 and the designated CHR in the sepcified CHR. When the result of comparison is in agreement, the contorl section 2 reports it to the line control section to hold the start to the check code generating circuit 4 having the operating function and the generation of the error control code untill another instruction is given from the line control section. Succeedingly, when the transmission CHR in the buffer 5 is transmitted to the CHR separation cicuit 6 and the instruction of check code transmission is given from the line control section, the control section 2 instructs that the result of operation of the circuit 4 is transmitted to the data transmission line. Accordingly, the operation of check code is not required for the upper-rank units.
JP6093679A 1979-05-17 1979-05-17 Line adaptor Pending JPS55153452A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6093679A JPS55153452A (en) 1979-05-17 1979-05-17 Line adaptor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6093679A JPS55153452A (en) 1979-05-17 1979-05-17 Line adaptor

Publications (1)

Publication Number Publication Date
JPS55153452A true JPS55153452A (en) 1980-11-29

Family

ID=13156752

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6093679A Pending JPS55153452A (en) 1979-05-17 1979-05-17 Line adaptor

Country Status (1)

Country Link
JP (1) JPS55153452A (en)

Similar Documents

Publication Publication Date Title
KR920020326A (en) Control command processing method and device
JPS55153452A (en) Line adaptor
JPS5383428A (en) Automatic power throw-in system for data transmission system
JPS54527A (en) Control circuit for terminal unit
JPS5419073A (en) Remote control apparatus
JPS53118325A (en) Control system for input/output device
JPS5327277A (en) Illuminator remote control system
JPS6453237A (en) Multi-interruption control method
JPS57134761A (en) Multi-processor operation controller
JPS52139886A (en) Sequence controller
JPS5426631A (en) Inspection system of rom
JPS5785125A (en) Information processor
JPS543673A (en) Sequence control system
JPS5429937A (en) Communication controller
JPS55123704A (en) Maintenance device of control unit
JPS5429938A (en) Data transmission controller
JPS53105920A (en) Control unit for exclusive processor control switchboard
JPS5440055A (en) Loop transmission system
JPS5541046A (en) Selective control unit
JPS5272103A (en) Plug-in unit
JPS5748107A (en) Sequence controller
JPS54139438A (en) Input terminal control unit
JPS57212517A (en) Operation status changing system of computer
JPS53116746A (en) Microprogram control system of input/output channel unit
JPS57106972A (en) Data output system