JPS5746353A - Detector for disk deterioration - Google Patents
Detector for disk deteriorationInfo
- Publication number
- JPS5746353A JPS5746353A JP12272780A JP12272780A JPS5746353A JP S5746353 A JPS5746353 A JP S5746353A JP 12272780 A JP12272780 A JP 12272780A JP 12272780 A JP12272780 A JP 12272780A JP S5746353 A JPS5746353 A JP S5746353A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- given
- deterioration
- magnetic disk
- read signal
- 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
Abstract
PURPOSE: To detect the deterioration of a magnetic disk medium, by comparing the read signal given from a magnetic disk with the reference voltage.
CONSTITUTION: A voltage comparator compares the voltage of the read signal given from a magnetic disk with the reference voltage. For instance, a head 2 shifting through a head drive part 3 as well as the part 3 are controlled by a command given from a central processor 10. Then the signal voltage given from a floppy disk control part 4 where the data is read and written and from a floppy disk medium 1 and supplied from the part 4 are compared with the voltage given from a constant voltage generating part 7 through a voltage comparator 6, and the result is displayed at a display part 5. The voltage of the read signal lowers with deterioration of the medium 1. Thus the degree of deterioration can be decided.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12272780A JPS5746353A (en) | 1980-09-04 | 1980-09-04 | Detector for disk deterioration |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12272780A JPS5746353A (en) | 1980-09-04 | 1980-09-04 | Detector for disk deterioration |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5746353A true JPS5746353A (en) | 1982-03-16 |
Family
ID=14843085
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12272780A Pending JPS5746353A (en) | 1980-09-04 | 1980-09-04 | Detector for disk deterioration |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5746353A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4516162A (en) * | 1983-04-21 | 1985-05-07 | Magnetic Peripherals Inc. | Method for verifying servo data |
JPS61137227A (en) * | 1984-12-06 | 1986-06-24 | Yokogawa Electric Corp | Optical disk device |
JPS6267387U (en) * | 1985-10-18 | 1987-04-27 | ||
US4691252A (en) * | 1984-10-02 | 1987-09-01 | Fuji Photo Film Co., Ltd. | Rotary magnetic recording-reproducing apparatus |
JPS632174A (en) * | 1986-06-20 | 1988-01-07 | Fujitsu Ltd | Magnetic reader |
US4792933A (en) * | 1986-08-26 | 1988-12-20 | Pioneer Electronic Corporation | Optical recording/reproducing apparatus having disk lifetime estimating device |
US4819093A (en) * | 1984-10-02 | 1989-04-04 | Fuji Photo Film Co., Ltd. | Rotary magnetic recording-reproducing apparatus with disc track checking |
JPH04111255A (en) * | 1990-08-31 | 1992-04-13 | Hitachi Ltd | Method and device for detecting flaw of storage medium |
KR100551662B1 (en) * | 1997-04-11 | 2006-04-21 | 소니 가부시끼 가이샤 | Recording medium driver |
-
1980
- 1980-09-04 JP JP12272780A patent/JPS5746353A/en active Pending
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4516162A (en) * | 1983-04-21 | 1985-05-07 | Magnetic Peripherals Inc. | Method for verifying servo data |
US4691252A (en) * | 1984-10-02 | 1987-09-01 | Fuji Photo Film Co., Ltd. | Rotary magnetic recording-reproducing apparatus |
US4819093A (en) * | 1984-10-02 | 1989-04-04 | Fuji Photo Film Co., Ltd. | Rotary magnetic recording-reproducing apparatus with disc track checking |
JPS61137227A (en) * | 1984-12-06 | 1986-06-24 | Yokogawa Electric Corp | Optical disk device |
JPS6267387U (en) * | 1985-10-18 | 1987-04-27 | ||
JPS632174A (en) * | 1986-06-20 | 1988-01-07 | Fujitsu Ltd | Magnetic reader |
US4792933A (en) * | 1986-08-26 | 1988-12-20 | Pioneer Electronic Corporation | Optical recording/reproducing apparatus having disk lifetime estimating device |
JPH04111255A (en) * | 1990-08-31 | 1992-04-13 | Hitachi Ltd | Method and device for detecting flaw of storage medium |
KR100551662B1 (en) * | 1997-04-11 | 2006-04-21 | 소니 가부시끼 가이샤 | Recording medium driver |
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