Write protected magnetic storage media and associated methods
US7414803B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 2005 |
| Grant date | Aug 19, 2008 |
| Priority date | — |
| Expiry date | Sep 18, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/90
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
According to one aspect and example, a method is provided for handling write protected storage devices. The method includes generating a read signal from a portion of a magnetic storage medium and determining if a modulation pattern is present in the read signal, the modulation pattern associated with an identification mark comprising a pattern of indicia associated with a recording layer of the magnetic storage medium. The identification mark indicates that the storage medium is a write protected storage device (e.g., a write-once-read-many “WORM” storage device or the like). If the storage medium is write protected, a media drive is restricted from write operations to the storage medium according to the particular write protected scheme, e.g., WORM, write append only, or the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.