Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent
1995-10-04
1997-02-11
Young, W. R.
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
369 4435, 369 54, G11B 709
Patent
active
056028105
ABSTRACT:
An optical recording medium on which information data is to be recorded and on which an n-th recording track is located at a distance from the (n-1)th recording track preceding the n-th recording track in a recording region which is narrower than the diameter of a spot of a light beam radiated on the recording area, with recording data obtained on logical processing with recording data recorded on the (n-1)th recording track being recorded on the n-th recording track for increasing the storage capacity of information data, is disclosed, A return beam of a light beam radiated across two neighboring recording tracks on the optical recording medium is detected by a detector having first and second light receiving sections having a boundary line extending parallel to the recording track of the optical recording medium for reading out the information recorded on the optical recording medium based on the level of a sum or difference signal of the output signals of the first and second light receiving sections.
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Patent Abstracts of Japan, vol. 9, No. 76, (P-346), Apr. 5, 1985, & JP 59-207433.
Fujita Goro
Horimai Hideyoshi
Sony Corporation
Young W. R.
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