Configuration of three-dimensional features in data...

Dynamic information storage or retrieval – Storage medium structure – Optical track structure

Reexamination Certificate

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Reexamination Certificate

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07102991

ABSTRACT:
Improvements in the shape of three-dimensional features displayed in optical recording structures, particularly in such structures displaying features of differing dimensional characteristics. The shape improvements include reductions in berm height and width, dual level data marks and tracking guides, and land areas projecting above or into the surface of the recording structure.

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