Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent
1995-02-17
1997-01-21
Young, W. R.
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
369 4425, 369 54, G11B 7095
Patent
active
055965571
ABSTRACT:
A disc skew detecting apparatus having a skew sensor for detecting skew of a disc in which information signals are recorded and reproduced with an optical pickup device, the skew sensor being located on a track on which a beam spot of the optical pickup device is positioned. Preferably, the disc skew detecting apparatus has two skew sensors for detecting skew of a disc in which information signals are recorded and reproduced with an optical pickup device, the skew sensors being located in preceding and succeeding positions of an objective lens of the optical pickup device and along a track which is incident a recording/reproducing light beam. The skew sensor being located with its measuring direction toward the center of the disc.
REFERENCES:
patent: 4608680 (1986-08-01), Yano
patent: 4634853 (1987-01-01), Kanamaru
patent: 4727529 (1988-02-01), Araki et al.
patent: 4780865 (1988-10-01), Yamakawa
patent: 5216649 (1993-06-01), Koike et al.
patent: 5430699 (1995-07-01), Matsubara et al.
Patent Abstracts of Japan, vol. 16, No. 5, P1295, & JP 3-228231.
Patent Abstracts of Japan, vol. 9, No. 161, P370, & JP 60-38743.
Musacchio, Esq. Pasquale
Rode, Esq. Lise A.
Sony Corporation
Toto, Esq. Peter C.
Young W. R.
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