JPS6136284B2 - - Google Patents

Info

Publication number
JPS6136284B2
JPS6136284B2 JP15756978A JP15756978A JPS6136284B2 JP S6136284 B2 JPS6136284 B2 JP S6136284B2 JP 15756978 A JP15756978 A JP 15756978A JP 15756978 A JP15756978 A JP 15756978A JP S6136284 B2 JPS6136284 B2 JP S6136284B2
Authority
JP
Japan
Prior art keywords
level
read signal
signal
detection level
information
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.)
Expired
Application number
JP15756978A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5587315A (en
Inventor
Akihiro Hayakawa
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 JP15756978A priority Critical patent/JPS5587315A/ja
Publication of JPS5587315A publication Critical patent/JPS5587315A/ja
Publication of JPS6136284B2 publication Critical patent/JPS6136284B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor

Landscapes

  • Digital Magnetic Recording (AREA)
JP15756978A 1978-12-22 1978-12-22 Record testing system for magnetic memory device Granted JPS5587315A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15756978A JPS5587315A (en) 1978-12-22 1978-12-22 Record testing system for magnetic memory device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15756978A JPS5587315A (en) 1978-12-22 1978-12-22 Record testing system for magnetic memory device

Publications (2)

Publication Number Publication Date
JPS5587315A JPS5587315A (en) 1980-07-02
JPS6136284B2 true JPS6136284B2 (enExample) 1986-08-18

Family

ID=15652545

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15756978A Granted JPS5587315A (en) 1978-12-22 1978-12-22 Record testing system for magnetic memory device

Country Status (1)

Country Link
JP (1) JPS5587315A (enExample)

Also Published As

Publication number Publication date
JPS5587315A (en) 1980-07-02

Similar Documents

Publication Publication Date Title
CN100505068C (zh) 盘存储装置和盘存储装置不良判定方法
JPS6010461A (ja) 磁気記憶装置
US3717846A (en) System for the detection of faults in a magnetic recording medium
US7929232B2 (en) Test method of a magnetic disk and magnectic disk tester
JPS6136284B2 (enExample)
JPH03116566A (ja) 光磁気ディスク記録再生制御方法
JP2502356B2 (ja) デ―タ記録／再生装置
JPH0427625B2 (enExample)
JP3049990B2 (ja) 磁気ディスク媒体試験方法
JP2984132B2 (ja) 磁気ディスク媒体の欠陥検出方法
JPH02210603A (ja) ディスク媒体の検査方法及びディスク装置
JPS63117353A (ja) 光磁気デイスクの寿命検査方法
KR100714869B1 (ko) 하드 디스크 드라이브, 상기 하드 디스크 드라이브의 동작방법 및 그 방법을 수행하는 컴퓨터 프로그램을 기록한기록매체
JPH0252832B2 (enExample)
JP2774278B2 (ja) 光ディスク装置のセクタマーク検出装置
JPH0673162B2 (ja) 磁気デイスク駆動装置の減磁試験方法
JPS6280805A (ja) 磁気テ−プ装置のデ−タエラ−チエツク方式
JPS59112412A (ja) バルレベル・センス回路
JPS61158070A (ja) 情報処理装置
JPH01312798A (ja) デイジタル記録再生装置
JPH0514986B2 (enExample)
JPH0377470B2 (enExample)
JPS6141042B2 (enExample)
JPS61160073A (ja) デイスク型記録媒体検査装置
JPH03154268A (ja) ディスク記憶装置の記録媒体の欠陥検査方法