Information recording medium and information memory apparatus

Details Information recording medium and information memory apparatus Information recording medium and information memory apparatus

1996-03-26

1999-09-28

Angebranndt, Martin

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Radiation sensitive composition or product or process of making

430945, 3692757, 3692755, 369284, 428 645, 428 646, G11B 1100

Patent

active

059586494

ABSTRACT:
An information memory apparatus includes an information storage medium having a thin film formed as a recording layer or a superresolution reading mask layer on a substrate directly or via a foundation layer to record and/or reproduce information stored in the form of an atom configuration change caused by irradiation of an energy beam. The information storage medium includes reflective layers as well. The information memory apparatus further includes a laser used for at least recording. The laser has a wavelength. The light absorptance of the recording layer or mask layer of the medium in a crystalline state at the wavelength is greater than or equal to the light absorptance of the recording layer or mask layer of the medium in an amorphous state at the wavelength. The information memory apparatus further includes an optical head control circuit, a tracking error detector, an optical head moving driver, a recording data modulator, a laser driver, a reproduced signal processor and a reproduced data sending unit.

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