Optical storage medium comprising inverted super-resolution...

Details Optical storage medium comprising inverted super-resolution... Optical storage medium comprising inverted super-resolution...

2009-03-06

2011-12-06

Tran, Thang (Department: 2627)

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

C369S013540

Reexamination Certificate

active

08072872

ABSTRACT:
The optical storage medium comprises a substrate layer, a data layer having a pit/land data structure with data arranged in tracks on the substrate layer, and a nonlinear layer with a super-resolution structure disposed on the data layer, wherein a land having a size below the diffraction limit is inverted to a pit and enclosed by auxiliary lands, and a pit having a size below the diffraction limit is inverted to a land and enclosed by auxiliary pits. The optical storage medium is in particular a read-only optical disc comprising a phase-change material, for example AgInSbTe, for providing the super-resolution effect.

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Kikukawa et al., “High-Density Read-Only memory Disc with Super Resolution Reflective Layer”, Japanese Journal of Applied Physics, vol. 40, Part 1, No. 3B, Mar. 2001, pp. 1624-1628.
Search Report Dated Apr. 24, 2009.

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