JPS5476118A - Abnormality report system in magnetic face memory device - Google Patents
Abnormality report system in magnetic face memory deviceInfo
- 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
Links
Landscapes
- 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
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)
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 |
-
1977
- 1977-11-29 JP JP14300577A patent/JPS5476118A/en active Pending
Cited By (2)
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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