Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Reexamination Certificate
2005-11-11
2010-02-09
Young, Wayne R (Department: 2627)
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
C369S047280, C369S044280
Reexamination Certificate
active
07660209
ABSTRACT:
An optical disk drive is designed to read and/or write data from/on a spiral string of tracks where land and groove tracks are alternated. The drive includes: a light source for radiating a light beam; a lens for converging the light beam; a mechanism for moving the lens; a photodetector for generating an electrical signal based on at least a part of the light beam reflected from the optical disk; and a control section for controlling the light source and the mechanism responsive to the electrical signal. While performing a seek operation by having the lens moved by the mechanism such that a target track, from/on which the data should start being read or written, is irradiated with the light beam, the control section tries to get a PLL locked by irradiating another track, which precedes the target track by at least one, with the light beam.
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Notice of Allowance issued on Mar. 25, 2008 for the corresponding Taiwan Patent Application No. 094139606 and partial English translation thereof.
Notice for Reasons for Rejection in corresponding Japanese Application No. 2005-323240 dated May 13, 2008 and English Translation.
Ishibashi Hiroshige
Minamino Jun-ichi
Shimamoto Takeshi
Watanabe Katsuya
Bibbins LaTanya
Panasonic Corporation
Renner , Otto, Boisselle & Sklar, LLP
Young Wayne R
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