JPS55134416A - Cross call cable switch - Google Patents

Cross call cable switch

Info

Publication number
JPS55134416A
JPS55134416A JP4050479A JP4050479A JPS55134416A JP S55134416 A JPS55134416 A JP S55134416A JP 4050479 A JP4050479 A JP 4050479A JP 4050479 A JP4050479 A JP 4050479A JP S55134416 A JPS55134416 A JP S55134416A
Authority
JP
Japan
Prior art keywords
power source
cable
contact
circuit
cross call
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
JP4050479A
Other languages
Japanese (ja)
Inventor
Akio Otani
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP4050479A priority Critical patent/JPS55134416A/en
Publication of JPS55134416A publication Critical patent/JPS55134416A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To make it possible to maintain only the faulty system without removal of a cable and to restrain many interrupts for transient operations to only one, by providing a diode group and a relay connected to the cable for cross call.
CONSTITUTION: At a system fault time, switch 400-1 breaks the faulty system power source to inactivate relay 300-1, and contact 300-1b is closed to earth cable 200 for cross call through diodes D11WD1n. At this time, if break of power source Vc1 of input circuit 4-1 and power source Vc2 of signal distributor 3-1n is sequence, contact 300-1b is first closed even if the output of circuit 4-1 is unstable. Then, even if power is supplied again to input a testing false interrupt signal to circuit 4-1, no interrupt input is caused to computer 2-2 in another system. Next, when the fault of system 1-1 is recovered, power source Vc2 is made to activate relay 300-1, and contact 300-1b is opened, and as the result, cable 200 is used effectively again.
COPYRIGHT: (C)1980,JPO&Japio
JP4050479A 1979-04-04 1979-04-04 Cross call cable switch Pending JPS55134416A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4050479A JPS55134416A (en) 1979-04-04 1979-04-04 Cross call cable switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4050479A JPS55134416A (en) 1979-04-04 1979-04-04 Cross call cable switch

Publications (1)

Publication Number Publication Date
JPS55134416A true JPS55134416A (en) 1980-10-20

Family

ID=12582375

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4050479A Pending JPS55134416A (en) 1979-04-04 1979-04-04 Cross call cable switch

Country Status (1)

Country Link
JP (1) JPS55134416A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5388543A (en) * 1977-01-14 1978-08-04 Hitachi Ltd Information processor
JPS53109448A (en) * 1977-03-07 1978-09-25 Hitachi Ltd Information processor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5388543A (en) * 1977-01-14 1978-08-04 Hitachi Ltd Information processor
JPS53109448A (en) * 1977-03-07 1978-09-25 Hitachi Ltd Information processor

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