Information recording media, a method for...

Details Information recording media, a method for... Information recording media, a method for...

2005-02-15

2005-02-15

Neyzari, Ali (Department: 2655)

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

C369S275300

Reexamination Certificate

active

06856589

ABSTRACT:
An information recording medium comprising a plurality of layers for recording or reproduction of information by optical irradiation. Each of the layers of the recording medium includes asperities made up of a groove, wherein the groove in each of the layers has wobbles of a first frequency and wobbles of a second frequency that is different from the first frequency within a single track. The first frequency is constant in each of the layers, and a different signal is obtained from the wobbles of the first and second frequencies in each of the plurality of layers.

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patent: 61210541 (1986-09-01), None
patent: 5-101398 (1993-04-01), None
Patent Abstracts of Japan 05-101398 Apr. 23, 1993.

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