Optimized media structure for bit-wise multi-layer optical...

Details Optimized media structure for bit-wise multi-layer optical... Optimized media structure for bit-wise multi-layer optical...

2011-08-23

2011-08-23

Mulvaney, Elizabeth (Department: 1785)

Stock material or miscellaneous articles

Circular sheet or circular blank

C428S064400, C430S270120

Reexamination Certificate

active

08003187

ABSTRACT:
An optical medium including a plurality of data layers stacked relative to each other in a dielectric medium. A respective data layer including mark and land regions for having information recorded thereon. A mark region and a land region in the respective data layer are disposed beside each other and have substantially the same optical path length across respective thicknesses of the mark region and the land region. A method and computer program product associated with forming the optical medium which determines whether an admittance curve for a material to be used as the mark region forms an intersection with a desired admittance curve based on the admittance of a land region disposed beside the mark region, and determines a thickness of the material based on the intersection.

REFERENCES:
patent: 4788097 (1988-11-01), Ohara et al.
patent: 5591501 (1997-01-01), Ovshinsky et al.
patent: 7842366 (2010-11-01), Ichimura
patent: 2006/0262706 (2006-11-01), Wu et al.

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