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AssigneeFujitsu Limited
InventorsKazuo Nishimura, Tatsuro Sasamoto, Hideaki Tanaka, Hiroaki Etoh
Estimating the term…
There is used a disk medium in which tracks are divided into a plurality of zones in the radial direction and information is read and written with a constant linear density by using a clock signal of a different frequency every zone. A drive unit forms a dead space corresponding to at least one track at a zone boundary of the disk medium and reads or writes the information. In the case where it is judged that the head passes through the zone boundary by the seeking operation to the cylinder address position instructed from an upper apparatus, the cylinder address instructed from the upper apparatus is corrected on the basis of the number of boundary passing times and the seeking operation is performed.
A magnetic disk apparatus comprising:
A disk medium of a magnetic disk apparatus having a combination head which includes a write head having a core width and a read head integrally provided with said write head and having a magneto-resistive element of relatively narrow core width, said combination head being positioned by a rotary actuator, wherein the disk medium comprises a plurality of tracks which can be magnetically read from and written to in the circumferential direction, each of said tracks having a track width determined by the core width of said write head, and having a dead space of 1/8 or less of the track width disposed therebetween, said tracks being further divided into a plurality of zones in the radial direction, with a zone boundary space corresponding to at least one said track disposed between said zones, and wherein information is read from and written to said tracks with a constant linear density by using a clock signal of a different frequency in every said zone.
A disk medium of a magnetic disk apparatus, wherein a plurality of tracks which can be magnetically read and written are formed in the circumferential direction and are divided into a plurality of zones in the radial direction, information is read and written with a constant linear density by using a clock signal of a different frequency every said zone, a space between the tracks at the boundary of said each zone defines a dead space, which is formed wider than a space between the tracks in the zone, and wherein said dead space has a width equal to or less than 1/8 of a width of a track.
An accessing method of a magnetic disk apparatus in which a combination head includes a write head having a core width, and a read head integrally provided with said write head and having a magneto-resistive element of relatively narrow core width, said combination head being positioned by a rotary actuator, said disk medium having a plurality of tracks each of which has a track width that is determined by the core width of said write head and which can be magnetically read from and written to in the circumferential direction on said disk medium so as to have a dead space of 1/8 or less of the track width between said tracks, said tracks being further divided into a plurality of zones in the radial direction, with a zone boundary space corresponding to at least one track being formed at the boundary of each zone, wherein information is read and written with a constant linear density by using a clock signal of a different frequency every said zone, comprising:
Dependencies are inferred from the claim text.