Apparatus for writing signal density information on a magnetic medium
US4819092A · kind A · utility
7Cited by
5References
31Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 8, 1987 |
| Grant date | Apr 4, 1989 |
| Priority date | — |
| Expiry date | May 8, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/90
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Apparatus is disclosed for using a head having narrow write gap to write tracks of information on a tape for subsequent reading by other apparatus including apparatus having heads with a wide read gap. An inter track erase operation is performed prior to the writing operation. Density information is written on a plurality of tracks to indicate the flux reversal signal density used for the writing of user data elsewhere on the tape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.