Process and device for reading out binary information magnetically stored in a transparent magnetic layer
US6124991A · kind A · utility
0Cited by
5References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 10, 1997 |
| Grant date | Sep 26, 2000 |
| Priority date | — |
| Expiry date | Sep 10, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/09
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention is based on a process for reading out binary information magnetically stored in a transparent magnetic layer (1) in which the signals supplied by a magnetic read head (3), pressed against the magnetic layer, (1) is preamplified, frequency-filtered and evaluated. The preamplified signals are filtered in different filter frequency (10a-10d) ranges and differentiated (11-14), and the signal with the most plausible bit sequence is selected from these signals of the various frequency ranges for further processing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.