1033Multiplane information storage system and record carrier...

Details 1033Multiplane information storage system and record carrier... 1033Multiplane information storage system and record carrier...

2011-04-19

2011-04-19

Edun, Muhammad (Department: 2753)

Dynamic information storage or retrieval

Systems having plural physically distinct independent tracks...

Having layered storage medium

C369S053130, C369S112040

Reexamination Certificate

active

07929394

ABSTRACT:
An information storage system is described which comprises a reading device (6) and an optical record carrier (5) having at least two information planes (1, 2, 3). The radiation from the record carrier is converted in a detection system (15) into a detection signal (16) which is applied to a detection circuit (17). In order that this circuit can derive the read information from the detection signal in a reliable manner, the interference signals generated by the information planes which are not to be read should comply with a requirement, referred to as the interference requirement, which is characteristic of the detection circuit. Values for the parameters of the record carrier, such as the thickness of the layers between the information planes and the reflection and transmission coefficients of the information planes then follow from this interference requirement.

REFERENCES:
patent: 5251198 (1993-10-01), Strickler
patent: 5263011 (1993-11-01), Maeda et al.
patent: 5446723 (1995-08-01), Best et al.

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