The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 07, 2012
Filed:
Mar. 05, 2009
Christophe Fery, Niedereschach, DE;
Larisa Von Riewel, Villingen-Schwennigen, DE;
Gael Pilard, Moenchweiler, DE;
Christophe Fery, Niedereschach, DE;
Larisa von Riewel, Villingen-Schwennigen, DE;
Gael Pilard, Moenchweiler, DE;
Thomson Licensing, Issy-les-Moulineaux, FR;
Abstract
The optical storage medium comprises a substrate layer, a data layer, and a nonlinear layer with a super-resolution structure disposed on the data layer, wherein pits and lands having a size above a diffraction limit of a pickup for reading of the data establish a first and a second level of the data layer, and pits and lands having a size below the diffraction limit of the pickup are arranged on a further level of the data layer. In a preferred embodiment, pits having a size below the diffraction limit are arranged on a third level and lands having a size below the diffraction limit are arranged on a fourth level of the data layer. 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.