Magnetic disk unit

Details Magnetic disk unit Magnetic disk unit

1995-05-19

1996-12-31

Levy, Stuart S.

Dynamic magnetic information storage or retrieval

Record medium

Disk

G11B 582

Patent

active

055900097

ABSTRACT:
A step h is provided between a recording region 2 including servo patterns Ps1, Ps2 and the recording track pattern Pw and a non-recording region 3 except the servo patterns Ps1, Ps2 and the recording track pattern Pw. A relation between a servo pattern width Ts and a track pitch Tp is set to be Tp(n-0.1).ltoreq.Ts.ltoreq.Tp(n+1), while a relation between a magnetic readout width Wr of the magnetic head and the track pitch Tp is set to be 0.9 Tp.ltoreq.Wr.ltoreq.1.1 Tp. A dead zone in a tracking error signal indicating a position of a magnetic head is to be eliminated, thus rendering it possible to position the magnetic head accurately and speedily.

REFERENCES:
patent: 4562105 (1985-12-01), Machida et al.
patent: 4656538 (1987-04-01), Mattson
patent: 4672470 (1987-06-01), Morimoto et al.
patent: 4737869 (1988-04-01), Sugaya et al.
patent: 4911967 (1990-03-01), Iazzari
patent: 5051851 (1991-09-01), Sakurai
patent: 5065382 (1991-11-01), Seko et al.
patent: 5138511 (1992-08-01), Hoshimi et al.
patent: 5235478 (1993-08-01), Hoshimi et al.
patent: 5296995 (1994-03-01), Yonezawa et al.
patent: 5317468 (1994-05-01), Wakabayashi et al.
Journal of Applied Physics, Lambert, S. E. et al. `Beyond Discrete Tracks: Other Aspects of Patterned Media` pp. 4724-4726, Apr. 15, 1991, NY, USA.
VLSI and Computer Peripherals, Sanders, I. L. et al. `Discrete Tracks--Possibilities for High-Density Magnetic Disks?` pp. 1-12 to 1-15, May 8, 1989, Hamburg.
Patent Abstracts of Japan vol. 014 No. 098 (P-1011), 22 Feb. 1990 & JP-A-01 302532 (Toa Nenryo Kogyo KK) 6 Dec. 1989, * abstract *.
Patent Abstracts of Japan vol. 14 No. 183 (P-1035) [4126], 12 Apr. 1990 & JP-A-02 031323 (Asahi Glass Co. Ltd.) 1 Feb. 1990 * abstract *.
IEEE Transactions on Magnetics, vol. 24, No. 6, Nov. 1988, pp. 2958-2960, "A Novel Way of Formatting To Accommodate Variations in Heads and Media", Jackson et al.

Affiliated with

Also associated with

Rating

Magnetic disk unit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magnetic disk unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic disk unit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1146178