JPS54133039A - Check system for 2 out of n signal - Google Patents

Check system for 2 out of n signal

Info

Publication number
JPS54133039A
JPS54133039A JP4039878A JP4039878A JPS54133039A JP S54133039 A JPS54133039 A JP S54133039A JP 4039878 A JP4039878 A JP 4039878A JP 4039878 A JP4039878 A JP 4039878A JP S54133039 A JPS54133039 A JP S54133039A
Authority
JP
Japan
Prior art keywords
signal
check
code
constitution
error
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
JP4039878A
Other languages
Japanese (ja)
Inventor
Takashi Morita
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 JP4039878A priority Critical patent/JPS54133039A/en
Publication of JPS54133039A publication Critical patent/JPS54133039A/en
Pending legal-status Critical Current

Links

Landscapes

  • Monitoring And Testing Of Exchanges (AREA)
  • Error Detection And Correction (AREA)

Abstract

PURPOSE: To economize the check system, by grouping the input leads to perform checking.
CONSTITUTION: When incoming signals are A,B and C code, AO to A7,BO to B7 and CO to C7 are taken as the input to each code. The exclusive logical sum elements 10 to 13,20 to 23, and 30 to 33 check individual code, and output the error signal E when either of the check circuits a,b,c is 1. With this constitution, as to the code A, the inspection objective of signal is grouped into two groups of AO,A1,A2 and A4,A7. As to the code A, constitution is made that all are treated as error other than one signal to A0,A1,A2 and one signal A4,A7 (a), two signals at A0,A1,A2 (b), and signal for the both A4 and A7 (c). Further, the similar check is made for the codes B and C, and as the result of check for either of the codes, if the output of individual check circuit is 1, the error signal E is outputted.
COPYRIGHT: (C)1979,JPO&Japio
JP4039878A 1978-04-07 1978-04-07 Check system for 2 out of n signal Pending JPS54133039A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4039878A JPS54133039A (en) 1978-04-07 1978-04-07 Check system for 2 out of n signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4039878A JPS54133039A (en) 1978-04-07 1978-04-07 Check system for 2 out of n signal

Publications (1)

Publication Number Publication Date
JPS54133039A true JPS54133039A (en) 1979-10-16

Family

ID=12579553

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4039878A Pending JPS54133039A (en) 1978-04-07 1978-04-07 Check system for 2 out of n signal

Country Status (1)

Country Link
JP (1) JPS54133039A (en)

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