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JPS5544675A - Logic device - Google Patents

Logic device

Info

Publication number
JPS5544675A
JPS5544675A JP11877078A JP11877078A JPS5544675A JP S5544675 A JPS5544675 A JP S5544675A JP 11877078 A JP11877078 A JP 11877078A JP 11877078 A JP11877078 A JP 11877078A JP S5544675 A JPS5544675 A JP S5544675A
Authority
JP
Japan
Prior art keywords
circuit
fault
redundant
basic circuit
coincidence
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
JP11877078A
Other languages
Japanese (ja)
Inventor
Shigeru Takasaki
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 JP11877078A priority Critical patent/JPS5544675A/en
Publication of JPS5544675A publication Critical patent/JPS5544675A/en
Pending legal-status Critical Current

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  • Logic Circuits (AREA)

Abstract

PURPOSE: To eliminate the effect of the fault and thus to enhance the reliability by installing the redundant circuit equivalent to the basic circuit and the holding circuit within the logic device and then giving a comparison to the output between the basic circuit and the redundant and holding circuits.
CONSTITUTION: In addition to basic circuit 201 which performs the ordinary logic action, redundant basic circuit 202 which performs the same action as circuit 201 and in parallel is provided along with holding basic circuit 203. Then the output is selected through switch circuit 251 for circuits 201 and 202, and then the coincidence comparison is carried out by comparator circuit 252. When the coincidence is obtained, the output is judged normal and then delivered directly. However, in case no coincidence is obtained, the switching is given to the combination between circuits 203 and 201. In this way, the fault is detected to secure switching to the normal circuit, thus preventing the effect of the fault from affecting other logic circuit networks.
COPYRIGHT: (C)1980,JPO&Japio
JP11877078A 1978-09-26 1978-09-26 Logic device Pending JPS5544675A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11877078A JPS5544675A (en) 1978-09-26 1978-09-26 Logic device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11877078A JPS5544675A (en) 1978-09-26 1978-09-26 Logic device

Publications (1)

Publication Number Publication Date
JPS5544675A true JPS5544675A (en) 1980-03-29

Family

ID=14744629

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11877078A Pending JPS5544675A (en) 1978-09-26 1978-09-26 Logic device

Country Status (1)

Country Link
JP (1) JPS5544675A (en)

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