Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1999-06-03
2000-05-02
Renner, Craig A.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
360135, G11B 560, G11B 582
Patent
active
060579846
ABSTRACT:
A method for conducting data writing/reading-out utilizing a contact start and stop (CSS) system is provided. The system includes a magnetic disc having a data zone for writing/reading-out of data and a contact start and stop (CSS) zone having a taking-off/landing region, and a stopping region for contact start and stop operation of a magnetic head. A plurality of projections are provided in the CSS zone such that the relative height of the projections in the taking-off/landing region decreases in the radial outward direction from the center of the magnetic disc toward the data zone. An average gradient for the height of the projections in the taking-off/landing zone is between about 1.times.10.sup.-6 and about 5.times.10.sup.-5. Further, the maximum height of the projections in the CSS zone is greater than the flying height of the magnetic head in the data zone, and the minimum height of the projections in the CSS zone is lower than the flying height of the magnetic head in the data zone. The system also includes a contact-head for seeking and for spinning down/spinning up disc rotations on the sloped projections. Recording/reading operations are accomplished by flying the magnetic head at a height lower than the maximum height of the projections.
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Registry of Patents, Search Report, Austrian Patent Office, dated Jun. 18, 1997.
Arita Yoji
Seo Yuzo
Conlin David G.
Mitsubishi Chemical Corporation
Renner Craig A.
Tucker David A.
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