Information recording medium having pair of electrodes

Details Information recording medium having pair of electrodes Information recording medium having pair of electrodes

2004-11-16

2008-09-16

Dinh, Tan X (Department: 2627)

Dynamic information storage or retrieval

Storage medium structure

Electrical track structure

C369S126000

Reexamination Certificate

active

07426174

ABSTRACT:
Disclosed herewith is a method for enabling fast and high density recording of information. A voltage is applied to a recording layer formed between a pair of electrodes. The distance between the pair of electrodes is set wider at one of land and groove areas of a subject optical disk and narrower at the other or the distance is set so that light absorption occurs only in either of the land and groove areas. The optical disk is also provided with a layer of which light absorption spectrum changes according to the application of an electric current, thereby absorbing the light. The new layer may be the recording layer itself or a layer adjacent to the recording layer. Because a heat generates only from a small area of the optical disk at the time of recording, the disk can be turned rapidly and permissively to the auto focusing and tracking offsets, thereby enabling fast and high density recording. The disk can thus be formed with easily selectable multiple layers.

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