Apparatus for recording information on a disc
US4969056A · kind A · utility
13Cited by
7References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 24, 1987 |
| Grant date | Nov 6, 1990 |
| Priority date | — |
| Expiry date | Jul 24, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/024
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a disc storage unit capable of writing a servo signal for positioning a recording head at each track defined on a disc-shaped recording medium, data in a region between adjacent tracks are erased prior to the writing of the servo signal. The data stored on the recording medium are completely erased and then the servo signal can be written in the recording medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.