Optical information recording medium with a separating part betw

Details Optical information recording medium with a separating part betw Optical information recording medium with a separating part betw

1989-12-27

1993-03-30

LaRoche, Eugene R.

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

369280, G11B 370, G11B 585, G11B 726

Patent

active

051990237

ABSTRACT:
An optical information recording medium includes a recording surface formed by a recording layer provided on a substrate, the recording surface being provided with parallel information tracks each divided into plural blocks, each of which is formed by a data area for information recording and a servo area for forming prepits for tracking signal detection, wherein the data area has a separating part the height of which is different from that of the information track and which is provided between information tracks adjacent to each other, and the difference in height is equal to or larger than the thickness of the recording layer, and wherein the servo area is not provided within the separating part.

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patent: 4912311 (1990-03-01), Hasegawa et al.
patent: 4932012 (1990-06-01), Kobayashi
patent: 5031162 (1991-07-01), Morimoto et al.
patent: 5067039 (1991-11-01), Godwin et al.

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