Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent
1997-09-17
1999-04-27
Young, W. R.
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
369 50, 369 54, G11B 7095
Patent
active
058986545
ABSTRACT:
An optical disk and optical disk apparatus used for accurately reproducing and recording information regardless of the physical distortions of disks and the electrical distortions of a tracking system. This is achieved in the present invention by providing an optical disk apparatus which takes into account the physical fluctuations, such as radial tilt and tangential tilt, and the electrical fluctuations, such as focus errors and tracking errors, and makes appropriate adjustments in the optical disk apparatus accordingly. These adjustments are made based upon relationships existing between a jittering amount of the reproduced signals and the above-mentioned fluctuations. Specifically, the present invention generates a predetermined pattern of marks which, when recorded, are arranged such that a signal reproduced from the predetermined pattern of marks is caused to jitter. Depending on the specific pattern of marks generated, the reproduced signal experiences an amount of jittering that is optimal so as to allow the present invention to make appropriate adjustments.
REFERENCES:
patent: 4755980 (1988-07-01), Yoshimaru et al.
patent: 4907212 (1990-03-01), Pharris et al.
patent: 5473480 (1995-12-01), Ishida
patent: 5502698 (1996-03-01), Mochizuki
Ishida Takashi
Ohara Shunji
Shimada Toshiyuki
Shoji Mamoru
Matsushita Electric - Industrial Co., Ltd.
Young W. R.
LandOfFree
Optical disk and optical disk apparatus having a predetermined p does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical disk and optical disk apparatus having a predetermined p, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical disk and optical disk apparatus having a predetermined p will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-690003