AU6847487A - Magnetic recorder medium having discrete magnetic storage and saturable layers and magnetic signal processing apparatus and method using the medium - Google Patents

Magnetic recorder medium having discrete magnetic storage and saturable layers and magnetic signal processing apparatus and method using the medium

Info

Publication number
AU6847487A
AU6847487A AU68474/87A AU6847487A AU6847487A AU 6847487 A AU6847487 A AU 6847487A AU 68474/87 A AU68474/87 A AU 68474/87A AU 6847487 A AU6847487 A AU 6847487A AU 6847487 A AU6847487 A AU 6847487A
Authority
AU
Australia
Prior art keywords
magnetic
medium
saturable
layers
processing apparatus
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
AU68474/87A
Other versions
AU594998B2 (en
Inventor
Beverley R. Gooch
Rex Niedermeyer
Roger W. Wood
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.)
Ampex Corp
Original Assignee
Ampex Corp
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 Ampex Corp filed Critical Ampex Corp
Publication of AU6847487A publication Critical patent/AU6847487A/en
Application granted granted Critical
Publication of AU594998B2 publication Critical patent/AU594998B2/en
Anticipated expiration legal-status Critical
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
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
    • G11B5/66—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers
    • 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
    • G11B5/027—Analogue recording
    • G11B5/03—Biasing
    • 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
    • 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
    • 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
    • G11B5/09—Digital recording
    • 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
    • G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
AU68474/87A 1985-12-13 1986-12-15 Magnetic recorder medium having discrete magnetic storage and saturable layers and magnetic signal processing apparatus and method using the medium Expired AU594998B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US80892185A 1985-12-13 1985-12-13
US808921 1985-12-13

Publications (2)

Publication Number Publication Date
AU6847487A true AU6847487A (en) 1987-06-30
AU594998B2 AU594998B2 (en) 1990-03-22

Family

ID=25200125

Family Applications (1)

Application Number Title Priority Date Filing Date
AU68474/87A Expired AU594998B2 (en) 1985-12-13 1986-12-15 Magnetic recorder medium having discrete magnetic storage and saturable layers and magnetic signal processing apparatus and method using the medium

Country Status (5)

Country Link
EP (1) EP0250560A4 (en)
JP (1) JP2704957B2 (en)
KR (1) KR950000948B1 (en)
AU (1) AU594998B2 (en)
WO (1) WO1987003728A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU604674B2 (en) * 1985-12-13 1991-01-03 Ampex Corporation Method and apparatus using a stationary magnetic body for effecting signal transfers between a moving magnetic core and a magnetic storage medium

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01503262A (en) * 1987-10-05 1989-11-02 ディジタル　イクイプメント　コーポレーション Magnetic recording media for longitudinal recording
JP2700043B2 (en) * 1991-04-16 1998-01-19 沖電気工業株式会社 Magnetic recording media
EP0780833A3 (en) * 1995-12-20 1999-01-07 Ampex Corporation Improved magnetic recording system having a saturable layer and detection using MR element
US5830590A (en) * 1996-06-28 1998-11-03 Ampex Corporation Magnetic storage and reproducing system with a low permeability keeper and a self-biased magnetoresistive reproduce head
US5861220A (en) * 1996-08-06 1999-01-19 Ampex Corporation Method and apparatus for providing a magnetic storage and reproducing media with a keeper layer having a longitudinal anisotropy
US5843565A (en) * 1996-10-31 1998-12-01 Ampex Corporation Particulate magnetic medium utilizing keeper technology and methods of manufacture
WO2000068941A1 (en) 1999-05-11 2000-11-16 Hitachi Maxell, Ltd. Magnetic recording medium and its production method, and magnetic recorder

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2073472B (en) * 1978-11-01 1982-12-01 Matsushita Electric Ind Co Ltd Magnetic recording and reproducing apparatus
US4318136A (en) * 1980-02-13 1982-03-02 Spin Physics, Inc. Magnetic recording apparatus and method
US4530016A (en) * 1982-07-16 1985-07-16 Tokyo Shibaura Denki Kabushiki Kaisha Magnetic recording and reproducing apparatus
JPS60193126A (en) * 1984-03-13 1985-10-01 Anelva Corp Vertical magnetized flexible disk

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU604674B2 (en) * 1985-12-13 1991-01-03 Ampex Corporation Method and apparatus using a stationary magnetic body for effecting signal transfers between a moving magnetic core and a magnetic storage medium

Also Published As

Publication number Publication date
KR950000948B1 (en) 1995-02-06
JPS63501753A (en) 1988-07-14
EP0250560A1 (en) 1988-01-07
KR880700991A (en) 1988-04-13
JP2704957B2 (en) 1998-01-26
EP0250560A4 (en) 1990-11-28
AU594998B2 (en) 1990-03-22
WO1987003728A1 (en) 1987-06-18

Similar Documents

Publication Publication Date Title
AU3223689A (en) Magnetic recording and/or reproducing apparatus
AU584364B2 (en) Signal recording and/or reproducing apparatus
EP0149015A3 (en) Method and apparatus for copy-protecting magnetic storage media
EP0192448A3 (en) Magnetic tape recording and/or reproducing apparatus
EP0148378A3 (en) Magnetic recording and playback apparatus
EP0193243A3 (en) Recording and/or reproducing apparatus
AU8222087A (en) Tape recording and/or reproducing apparatus
AU583204B2 (en) Magnetic recording and reproducing apparatus
GB2175731B (en) Recording and/or reproducing apparatus
AU583207B2 (en) Recording and reproducing apparatus
GB2149187B (en) Magnetic recording and reproducing apparatus
EP0212720A3 (en) Recording and/or reproducing apparatus
GB2221785B (en) Magnetic tape recording and/or reproducing apparatus
AU6847487A (en) Magnetic recorder medium having discrete magnetic storage and saturable layers and magnetic signal processing apparatus and method using the medium
GB2096817B (en) Magnetic recording and/or reproducing apparatus
EP0196104A3 (en) Recording and/or reproducing apparatus
EP0198472A3 (en) Magnetic recording medium and method for producing the same
EP0196095A3 (en) Magnetic recording and reproducing apparatus
EP0192445A3 (en) Recording methods and recording and/or reproducing apparatus
EP0227468A3 (en) Recording and/or reproducing apparatus
EP0228878A3 (en) Recording and/or reproducing apparatus
GB2149192B (en) Magnetic recording and reproducing apparatus
HK7294A (en) Recording and/or reproducing apparatus
DE3462214D1 (en) Magnetic recording and reproducing apparatus
EP0213600A3 (en) Magnetic recording and reproducing apparatus