JPS5712406A - Magnetic recording system - Google Patents

Magnetic recording system

Info

Publication number
JPS5712406A
JPS5712406A JP8634880A JP8634880A JPS5712406A JP S5712406 A JPS5712406 A JP S5712406A JP 8634880 A JP8634880 A JP 8634880A JP 8634880 A JP8634880 A JP 8634880A JP S5712406 A JPS5712406 A JP S5712406A
Authority
JP
Japan
Prior art keywords
recording
recording current
magnetic recording
density
recording system
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.)
Granted
Application number
JP8634880A
Other languages
Japanese (ja)
Other versions
JPH0243241B2 (en
Inventor
Toyoji Okuwaki
Yasuhiro Kato
Yoshihisa Kamo
Zenji Tsutsumi
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP8634880A priority Critical patent/JPS5712406A/en
Publication of JPS5712406A publication Critical patent/JPS5712406A/en
Publication of JPH0243241B2 publication Critical patent/JPH0243241B2/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
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • G11B20/10046—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter
    • G11B20/10212—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter compensation for data shift, e.g. pulse-crowding effects

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Digital Magnetic Recording (AREA)

Abstract

PURPOSE:To minimize the peak shift and to prevent the error in discrimination, by setting the recording current at a high recording density part on a medium lower than the recording current at a low recording density part. CONSTITUTION:With the 10011001 signal pattern, for instance, the recording current IH of a high density 11 is set lower than the recording current IL of 1001 of a low density. As a result, the magnetization reversing space C of the signal at the high recording density part 11 approximates to the original value A. Thus the peak shift is reduced, and the error in discrimination can be prevented.
JP8634880A 1980-06-25 1980-06-25 Magnetic recording system Granted JPS5712406A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8634880A JPS5712406A (en) 1980-06-25 1980-06-25 Magnetic recording system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8634880A JPS5712406A (en) 1980-06-25 1980-06-25 Magnetic recording system

Publications (2)

Publication Number Publication Date
JPS5712406A true JPS5712406A (en) 1982-01-22
JPH0243241B2 JPH0243241B2 (en) 1990-09-27

Family

ID=13884356

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8634880A Granted JPS5712406A (en) 1980-06-25 1980-06-25 Magnetic recording system

Country Status (1)

Country Link
JP (1) JPS5712406A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01227201A (en) * 1988-03-07 1989-09-11 Mitsubishi Electric Corp Magnetic recorder
US5119244A (en) * 1989-04-12 1992-06-02 Tandberg Data As Method and apparatus for recording data information on a magnetic recording medium

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0618246U (en) * 1992-03-19 1994-03-08 リュウグウ株式会社 Goods storage case

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01227201A (en) * 1988-03-07 1989-09-11 Mitsubishi Electric Corp Magnetic recorder
US5119244A (en) * 1989-04-12 1992-06-02 Tandberg Data As Method and apparatus for recording data information on a magnetic recording medium

Also Published As

Publication number Publication date
JPH0243241B2 (en) 1990-09-27

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