Writing and reading high density magnetic tapes
US5986843A · kind A · utility
3Cited by
11References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 23, 1997 |
| Grant date | Nov 16, 1999 |
| Priority date | — |
| Expiry date | Dec 23, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/90
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A tape drive writes/reads tapes written in a format which stores an increased amount of data because the tracks overlap. The wide write/narrow read heads read a center portion of each track which does not have overlap. The new format is identified by the positions of a reference burst, by encryption of the bad sector map, and by alteration of the tape signature to prevent unqualified drives and software from operating upon tapes in the new format.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.