Method for data writing/read-out using a contact start and stop system
US6057984A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 3, 1999 |
| Grant date | May 2, 2000 |
| Priority date | — |
| Expiry date | Jun 3, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B21/21
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
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 magneti…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.