Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent
1986-11-25
1989-11-14
Faber, Alan
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
369 46, 369 54, 369 58, 235454, G06K 7015, G11B 709
Patent
active
048812153
ABSTRACT:
A method and apparatus for correcting an angular deviation or a skew of an optical recording medium in the reading/writing of data from or into the medium and a specific optical recording medium to which this method and apparatus are applicable. The optical recording medium comprises strip patterns formed on part of a substrate. This optical recording medium is relatively moved in a direction of the width of the strip patterns with respect to a pattern detecting device so that an optical system of the pattern detecting device detects the patterns at plural detecting points along the length of the strip patterns. A correction control device counts the number of the strip patterns passed, according to the relative movement as mentioned above and compares the count values at the respective detecting points to detect an angular deviation amount in a plane of the optical recording medium. The angular deviation is corrected by a rotation drive mechanism based on the detected angular deviation amount and direction of the deviation.
REFERENCES:
patent: 3852573 (1974-12-01), Dolch
patent: 4145758 (1979-03-01), Drexler et al.
patent: 4163157 (1979-07-01), Guignard et al.
patent: 4213040 (1980-07-01), Gokey et al.
patent: 4269917 (1981-05-01), Drexler et al.
patent: 4273758 (1981-07-01), Drexler et al.
patent: 4278756 (1981-07-01), Bouldin et al.
patent: 4360728 (1982-11-01), Drexler
patent: 4365324 (1982-12-01), Michaelis
patent: 4500777 (1985-02-01), Drexler
patent: 4542288 (1985-09-01), Drexler
patent: 4544835 (1985-11-01), Drexler
patent: 4588882 (1986-05-01), Buxton
patent: 4598196 (1986-07-01), Pierce et al.
patent: 4598393 (1986-07-01), Pierce et al.
patent: 4623784 (1986-11-01), Haddock et al.
patent: 4634850 (1987-01-01), Pierce et al.
patent: 4652730 (1987-03-01), Marshall
patent: 4692603 (1987-09-01), Brass et al.
patent: 4695991 (1987-09-01), Hudson
Computer Services Corporation
Faber Alan
Weinhardt Robert A.
LandOfFree
Optical recording medium and method for correcting angular devia 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 recording medium and method for correcting angular devia, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical recording medium and method for correcting angular devia will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1856471