JPS55146528A - Multiplexing electronic unit - Google Patents

Multiplexing electronic unit

Info

Publication number
JPS55146528A
JPS55146528A JP5422579A JP5422579A JPS55146528A JP S55146528 A JPS55146528 A JP S55146528A JP 5422579 A JP5422579 A JP 5422579A JP 5422579 A JP5422579 A JP 5422579A JP S55146528 A JPS55146528 A JP S55146528A
Authority
JP
Japan
Prior art keywords
circuit
interface
electronic circuit
supplied
case
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
JP5422579A
Other languages
Japanese (ja)
Inventor
Kiyoshi Kuno
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 JP5422579A priority Critical patent/JPS55146528A/en
Publication of JPS55146528A publication Critical patent/JPS55146528A/en
Pending legal-status Critical Current

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  • Hardware Redundancy (AREA)

Abstract

PURPOSE: To improve reliability by multiplexing not only an electronic circuit part but also an interface part.
CONSTITUTION: When an electronic circuit 2 is in an operation state, an electronic circuit 3 is in a holding state. In this case, a gate circuit 27 is opened, and the electric power source is supplied to an interface circuit 12-1 butis not supplied to an interface circuit 12-2. In case a trouble is caused in the electronic circuit 2, it is detected by a check circuit, an error information 24 is given to the electronic circuit 3, and the electronic circuit 3 becomes an operation state. In this case, the gate circuit 27 is closed, the gate circuit 28 is opened, and the interface 12-2 starts its operation. The power source is not supplied to the interface which is unnecessary because it is prevented to exert a bad influence on the electronic circuit even if a trouble is caused in the interface.
COPYRIGHT: (C)1980,JPO&Japio
JP5422579A 1979-05-04 1979-05-04 Multiplexing electronic unit Pending JPS55146528A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5422579A JPS55146528A (en) 1979-05-04 1979-05-04 Multiplexing electronic unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5422579A JPS55146528A (en) 1979-05-04 1979-05-04 Multiplexing electronic unit

Publications (1)

Publication Number Publication Date
JPS55146528A true JPS55146528A (en) 1980-11-14

Family

ID=12964590

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5422579A Pending JPS55146528A (en) 1979-05-04 1979-05-04 Multiplexing electronic unit

Country Status (1)

Country Link
JP (1) JPS55146528A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5895457A (en) * 1981-12-02 1983-06-07 Matsushita Electric Ind Co Ltd Dual system switching controller
JPS58101234U (en) * 1981-12-26 1983-07-09 株式会社東芝 Redundant interface circuit

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5021650A (en) * 1973-06-26 1975-03-07
JPS5393741A (en) * 1977-01-26 1978-08-17 Hokushin Electric Works Duplex data transfer system
JPS53121441A (en) * 1977-03-31 1978-10-23 Toshiba Corp Duplicated information processor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5021650A (en) * 1973-06-26 1975-03-07
JPS5393741A (en) * 1977-01-26 1978-08-17 Hokushin Electric Works Duplex data transfer system
JPS53121441A (en) * 1977-03-31 1978-10-23 Toshiba Corp Duplicated information processor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5895457A (en) * 1981-12-02 1983-06-07 Matsushita Electric Ind Co Ltd Dual system switching controller
JPH0220029B2 (en) * 1981-12-02 1990-05-07 Matsushita Electric Ind Co Ltd
JPS58101234U (en) * 1981-12-26 1983-07-09 株式会社東芝 Redundant interface circuit

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