JPS56132844A - Communication controlling device - Google Patents

Communication controlling device

Info

Publication number
JPS56132844A
JPS56132844A JP3608780A JP3608780A JPS56132844A JP S56132844 A JPS56132844 A JP S56132844A JP 3608780 A JP3608780 A JP 3608780A JP 3608780 A JP3608780 A JP 3608780A JP S56132844 A JPS56132844 A JP S56132844A
Authority
JP
Japan
Prior art keywords
flip
circuit
common processing
processing part
stand
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
JP3608780A
Other languages
Japanese (ja)
Inventor
Yuzo Maeda
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 JP3608780A priority Critical patent/JPS56132844A/en
Publication of JPS56132844A publication Critical patent/JPS56132844A/en
Pending 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)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)

Abstract

PURPOSE:To make it possible to lead an optional circuit into a stand-by system, by providing flip-flops corresponding to circuits, in the selector part, and controlling them. CONSTITUTION:Flip-flops 81-8n are provided on the selector part 2'. These flip- flops 81-8n are able to set and reset from the common processing part 1a and 1b. Now, the ''0'' system common processing part 1a is made an existing system, and in case when a circuit connected to the circuit discrete part 31 is tested from the ''1'' system common processing part 1b which is a stand-by system, the ''1'' system common processing part 1b outputs a set signal to the flip-flop 81. As a result, the circuit discrete part 31 is led into the ''1'' system common part 1b which is a stand-by system, and the ''1'' system common part 1b is can test a circuit connected to the circuit discrete part 31. When the test has been finished, the ''1'' system common processing part 1b outputs a reset signal to the flip-flop 81, and the circuit discrete part 31 is led into the existing system once again.
JP3608780A 1980-03-24 1980-03-24 Communication controlling device Pending JPS56132844A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3608780A JPS56132844A (en) 1980-03-24 1980-03-24 Communication controlling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3608780A JPS56132844A (en) 1980-03-24 1980-03-24 Communication controlling device

Publications (1)

Publication Number Publication Date
JPS56132844A true JPS56132844A (en) 1981-10-17

Family

ID=12459959

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3608780A Pending JPS56132844A (en) 1980-03-24 1980-03-24 Communication controlling device

Country Status (1)

Country Link
JP (1) JPS56132844A (en)

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