Data recording area signal generating method and apparatus
US4674071A · kind A · utility
10Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 19, 1984 |
| Grant date | Jun 16, 1987 |
| Priority date | — |
| Expiry date | Sep 19, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/1217
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to a method and an apparatus for generating a data recording area signal in order to define an appointed data recording area on a data storing medium which has a multitude of sectors with high information density recorded by means of beam irradiation. The index signal derived from the detected index pattern in a sector is used together with a clock signal supplied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.