Optical storage system divider based draw verification with digitally synthesized writing laser pulse signal
US9875769B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2016 |
| Grant date | Jan 23, 2018 |
| Priority date | — |
| Expiry date | Aug 22, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/1353
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical storage system includes an optical head configured to split a light beam into a higher power main beam and a lower power side beam. The system also includes a controller. The controller is configured to modulate the higher power main beam according to writing commands to write to an optical medium while processing first data resulting from the lower power side beam being reflected from the medium and second data obtained from a look-up table that maps the writing commands to digital representations of filtered writing strategy waveforms to remove noise from the first data caused by the higher power main beam and generate output indicative of written data directly after writing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.