JPS5760506A - Magnetic recording and reproducing method - Google Patents

Magnetic recording and reproducing method

Info

Publication number
JPS5760506A
JPS5760506A JP55133954A JP13395480A JPS5760506A JP S5760506 A JPS5760506 A JP S5760506A JP 55133954 A JP55133954 A JP 55133954A JP 13395480 A JP13395480 A JP 13395480A JP S5760506 A JPS5760506 A JP S5760506A
Authority
JP
Japan
Prior art keywords
magnetic
vertical
lengthwise
component
recorded
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
JP55133954A
Other languages
Japanese (ja)
Other versions
JPS6338765B2 (en
Inventor
Shusaku Nagahara
Masuo Umemoto
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 JP55133954A priority Critical patent/JPS6338765B2/ja
Publication of JPS5760506A publication Critical patent/JPS5760506A/en
Publication of JPS6338765B2 publication Critical patent/JPS6338765B2/ja
Expired 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

Abstract

PURPOSE:To record an analog signal on a medium with a bias signal and to increase the level at reproduction, by ising a lengthwise magnetic field as well as a vertical magnetic field for a vertically magnetized magnetic medium. CONSTITUTION:Figure shows the direction of a magnetic field produced with a ring shaped magnetic head 9 with the arrow. A magnetic layer 6 is subjected to a lengthwise magnetic field as well as a vertical magnetic field. The magnetic layer 6 has a magnetization easy axis toward vertical direction but also forms a magnetized pattern with a slope through a lengthwise magnetic field. The vertical medium has a vertical anisotropy in which the ratio of vertical residual magnetization amount to lengthwise one is >=6:4. In this case, the angle of a magnetized pattern E changes according to the amplitude of a recorded signal C'. This magnetized pattern E can be divided into the vertical component F and the lengthwise component G. That is, the recorded signal C' is recorded with the lengthwise component, and this component is recorded on the surface of the magneitizing layer 6. Thus, the reproduced level of the analog signal can be increased.
JP55133954A 1980-09-26 1980-09-26 Expired JPS6338765B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55133954A JPS6338765B2 (en) 1980-09-26 1980-09-26

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55133954A JPS6338765B2 (en) 1980-09-26 1980-09-26

Publications (2)

Publication Number Publication Date
JPS5760506A true JPS5760506A (en) 1982-04-12
JPS6338765B2 JPS6338765B2 (en) 1988-08-02

Family

ID=15116954

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55133954A Expired JPS6338765B2 (en) 1980-09-26 1980-09-26

Country Status (1)

Country Link
JP (1) JPS6338765B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5963005A (en) * 1982-10-04 1984-04-10 Toshiba Corp Magnetic recording system
JPH0239752U (en) * 1988-09-08 1990-03-16
US5410521A (en) * 1988-07-15 1995-04-25 Canon Kabushiki Kaisha Method and apparatus for recording information on a medium having biaxial magnetic anisotropy using parallel and perpendicular magnetic fields

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IEEE TRANSACTIONS ON MAGNETICS ULTRA-HIGH DENSITY RECORDING WITH NEW HEADS AND TAPES=1979 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5963005A (en) * 1982-10-04 1984-04-10 Toshiba Corp Magnetic recording system
JPH0415521B2 (en) * 1982-10-04 1992-03-18 Tokyo Shibaura Electric Co
US5410521A (en) * 1988-07-15 1995-04-25 Canon Kabushiki Kaisha Method and apparatus for recording information on a medium having biaxial magnetic anisotropy using parallel and perpendicular magnetic fields
JPH0239752U (en) * 1988-09-08 1990-03-16

Also Published As

Publication number Publication date
JPS6338765B2 (en) 1988-08-02

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