Tracking system in recording/reproducing apparatus

Details Tracking system in recording/reproducing apparatus Tracking system in recording/reproducing apparatus

1989-11-13

1993-06-01

Psitos, Aristotelis

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4435, 3692753, G11B 7007

Patent

active

052166465

ABSTRACT:
The present invention generally relates to optical recording/reproducing apparatus, and relates particularly to a tracking system therefor. Tracking pit rows are provided on opposite sides of an information signal recording area. The frequencies of the tracking pit rows differ from each other, such that tracking servo normalizes a detected difference in amplitude between the reproduced signals of the tracking pit rows, resulting in improved tracking accuracy.

REFERENCES:
patent: 4322836 (1982-03-01), Kinjo et al.
patent: 4358774 (1982-11-01), Wilkinson
patent: 4748609 (1988-05-01), Yonezawa et al.
patent: 4862439 (1989-08-01), Ando et al.
patent: 4965781 (1990-10-01), Akiyama et al.
patent: 4967403 (1990-10-01), Ogawa et al.
patent: 4980882 (1990-12-01), Baer et al.
patent: 5038339 (1991-08-01), Pasman et al.

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