Information storage device having an optical head assembly and a magnetic head assembly both mounted upon a single carriage
US6515943B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 24, 1998 |
| Grant date | Feb 4, 2003 |
| Priority date | — |
| Expiry date | Sep 24, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B21/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An information storage device having a mechanism for automatically detecting a misalignment between a magnetic head and an optical head and correcting the misalignment. The information storage device includes a carriage, an optical head mounted on the carriage and having an objective lens and an actuator for moving the objective lens, a first driving mechanism for moving the carriage in a first direction, and a magnetic head assembly mounted on the carriage and having a magnetic head. The information storage device further includes a light emitting element mounted on the optical head and a photodetector mounted on the magnetic head assembly for detecting light emitted from the light emitting element. A misalignment between the optical head and the magnetic head is detected by using the photodetector and the light emitted from the light emitting element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.