Optical recording medium, recording and reproducing method and t

Details Optical recording medium, recording and reproducing method and t Optical recording medium, recording and reproducing method and t

1995-01-27

1996-04-30

Young, W. R.

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

369111, 369124, G11B 700

Patent

active

055131611

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 informer, ion 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 informer, ion 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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