Method for writing and reading data on a multi-layer recordable

Details Method for writing and reading data on a multi-layer recordable Method for writing and reading data on a multi-layer recordable

1996-01-29

1997-09-23

Ball, Michael W.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156232, 156235, 156237, 1562722, 1562728, 369109, 369286, 428 644, B29C 4100, B32B 3100

Patent

active

056699956

ABSTRACT:
A recordable compact disc comprises a 0.6 millimeter clear plastic or glass substrate on which is grown a thin-film image layer having several distinct recording planes. Each recording plane is separated from the next by a clear plastic layer. Each recording plane includes an organic dye layer in combination with another clear layer that has a different index of refraction. Different color dyes are used for each recording plane. A method for storing and reading data to and from a multilayer recordable compact disc with different color dye layers uses high powered color lasers to write each recording plane and low powered monochromatic reading lasers that are sensitive to the constructive and destructive light interference effects caused by micron variations in the clear plastic layers in each recording plane. The micron variations used for each recording plane are unique and chosen along with the monochromatic reading laser colors to have minimal crosstalk between recording-plane data channels.

REFERENCES:
patent: 5468324 (1995-11-01), Hong
patent: 5526338 (1996-06-01), Hasman
patent: 5540966 (1996-07-01), Hintz

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