JPS5746353A - Detector for disk deterioration - Google Patents

Detector for disk deterioration

Info

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
Application number
JP12272780A
Other languages
Japanese (ja)
Inventor
Yoshiaki Koizumi
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP12272780A priority Critical patent/JPS5746353A/en
Publication of JPS5746353A publication Critical patent/JPS5746353A/en
Pending legal-status Critical Current

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
JP12272780A 1980-09-04 1980-09-04 Detector for disk deterioration Pending JPS5746353A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (9)

* Cited by examiner, † Cited by third party
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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