JPS5476118A - Abnormality report system in magnetic face memory device - Google Patents

Abnormality report system in magnetic face memory device

Info

Publication number
JPS5476118A
JPS5476118A JP14300577A JP14300577A JPS5476118A JP S5476118 A JPS5476118 A JP S5476118A JP 14300577 A JP14300577 A JP 14300577A JP 14300577 A JP14300577 A JP 14300577A JP S5476118 A JPS5476118 A JP S5476118A
Authority
JP
Japan
Prior art keywords
circuit
abnormality
data
head
memory device
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
JP14300577A
Other languages
Japanese (ja)
Inventor
Motoyuki Nagasaka
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP14300577A priority Critical patent/JPS5476118A/en
Publication of JPS5476118A publication Critical patent/JPS5476118A/en
Pending legal-status Critical Current

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  • Debugging And Monitoring (AREA)

Abstract

PURPOSE: To discover the abnormalities of heads, recording media, etc. at an early time by detecting the abnormalities of the data having been read out by the subsequently selected head while a magnegic face memory device is not used.
CONSTITUTION: While the magnetic disc apparatus is not selected by a host unit 15, gates 16, 18 close and 17 opens and at the same time a control circuit 10 and a data abnormality detecion circuit 13 start operating. The circuit 10 supplies clock signal C to a head selection counter 11 and supplies check timing signal D to the circuit 13. When the contents of the counter 11 are supplied to a head selection decoder 12, the head corresponding thereto is selected and the read-out data thereof are inputted to the data abnormality detection circuit 13. When there is any abnormality in the data, the circuit 13 sends the logic "1" signal to an apparatus abnormality signal sending part 6 and an interrupt signal sending part 7 to put these in the stage of logic "1" and stop the entire part of the apparatus. Thereby, the abnormality of heads, recording media, etc. may be discovered at an early time.
COPYRIGHT: (C)1979,JPO&Japio
JP14300577A 1977-11-29 1977-11-29 Abnormality report system in magnetic face memory device Pending JPS5476118A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14300577A JPS5476118A (en) 1977-11-29 1977-11-29 Abnormality report system in magnetic face memory device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14300577A JPS5476118A (en) 1977-11-29 1977-11-29 Abnormality report system in magnetic face memory device

Publications (1)

Publication Number Publication Date
JPS5476118A true JPS5476118A (en) 1979-06-18

Family

ID=15328726

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14300577A Pending JPS5476118A (en) 1977-11-29 1977-11-29 Abnormality report system in magnetic face memory device

Country Status (1)

Country Link
JP (1) JPS5476118A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6057427A (en) * 1983-09-09 1985-04-03 Toshiba Corp Control circuit of information recording and reproducing device
JPS63231773A (en) * 1987-03-20 1988-09-27 Victor Co Of Japan Ltd Rotary head type digital signal recording and reproducing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6057427A (en) * 1983-09-09 1985-04-03 Toshiba Corp Control circuit of information recording and reproducing device
JPS63231773A (en) * 1987-03-20 1988-09-27 Victor Co Of Japan Ltd Rotary head type digital signal recording and reproducing device

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