Dynamic information storage or retrieval – Storage medium structure – Optical track structure
Patent
1983-10-14
1985-10-15
Faber, Alan
Dynamic information storage or retrieval
Storage medium structure
Optical track structure
369 44, 369279, 369286, 3461351, G11B 700
Patent
active
045478767
ABSTRACT:
The invention comprises an improved optical recording medium and information record wherein the light sensitive layer comprises a tracking layer having one or more openings extending therethrough and an absorber layer overlying the tracking layer and the openings therein thereby forming first and second regions of the light sensitive layer having different reflectivities which can be used to provide radial tracking information.
The method of the invention includes the steps of depositing a tracking layer onto a light reflective layer, forming one or more openings through the tracking layer and depositing an absorber layer over the tracking layer and into the openings therein.
REFERENCES:
patent: 3665483 (1972-05-01), Becker et al.
patent: 4069487 (1978-01-01), Kasai et al.
patent: 4097895 (1978-06-01), Spong
patent: 4101907 (1978-07-01), Bell et al.
patent: 4176377 (1979-11-01), Howe
patent: 4216501 (1980-08-01), Bell
patent: 4252889 (1981-02-01), Ettenberg
patent: 4359750 (1982-11-01), Howe
IEEE Spectrum, Aug. 1978, pp. 26-28.
Bulthuies, K. et al., "Ten Billion Bits on a Disk", IEEE Spectrum, Aug. 1979, pp. 26-33.
Burke William J.
Faber Alan
Morris Birgit E.
RCA Corporation
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