Magnetic disk writing method and a magnetic disk apparatus

Details Magnetic disk writing method and a magnetic disk apparatus Magnetic disk writing method and a magnetic disk apparatus

1993-09-21

1999-04-20

Le, Thien Minh

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Head amplifier circuit

360124, G11B 509

Patent

active

058962395

ABSTRACT:
A method and disk apparatus, for writing data disk apparatus, that reduces the adverse influence of noise caused by data head writing on a read signal of a servo head even though the data head and the servo head are collaterally paired with no disks there between. A magnetic disk apparatus comprises a plurality of magnetic disks that are stacked at predetermined intervals; a servo head for reading servo signals recorded on a servo surface of one of the magnetic disks; a plurality of data heads, one of which is provided for each data surface of the magnetic disks with a first data head being collaterally positioned with the servo head, with no intervening magnetic disk, and second data heads being positioned at other than the collateral position; and an actuator for supporting the servo head and the data heads and for positioning the servo head and the data heads by moving them radially relative to the magnetic disks. The method comprises the steps of: producing a write current whose value is varied by selecting either the first data head or one of the second data heads in consonance with a head select signal; and driving, at the write current value, the data head that is selected by the head select signal in consonance with write data. The magnetic disk apparatus further comprises a write circuit for varying a write current value by selecting either the first data head or one of the second data heads in consonance with a head select signal, and for driving the selected data head in consonance with write data.

REFERENCES:
patent: 4525753 (1985-06-01), Shimeki et al.
patent: 4967292 (1990-10-01), Moteki
patent: 5099367 (1992-03-01), Sidman
patent: 5136439 (1992-08-01), Weispfenning et al.
patent: 5193036 (1993-03-01), Green et al.
patent: 5210669 (1993-05-01), Weispfenning et al.
patent: 5260703 (1993-11-01), Nguyen et al.

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