Position sensor for tracking system for optical data storage

Details Position sensor for tracking system for optical data storage Position sensor for tracking system for optical data storage

1998-04-06

2000-12-12

Psitos, Aristotelis M.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4423, 369112, G11B 700

Patent

active

061607746

ABSTRACT:
A disc drive for performing data operations relative to a disc includes a head positionable near the disc. The head is optically coupled to a light source by optics that direct a light beam from the light source to the head. The optics include a tracking position sensor that has first and second light detectors and a reflective surface. The first and second light detectors are capable of providing first and second electrical signals indicative of the amount of light incident on the respective light detectors. A third light detector is coupled to the optics and is receptive of light reflected from the disc.

REFERENCES:
patent: 4425043 (1984-01-01), Van Rosmalen
patent: 5113387 (1992-05-01), Goldsmith et al.
patent: 5216649 (1993-06-01), Koike et al.
patent: 5815293 (1998-09-01), Komma et al.

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