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:
Nov. 19, 2013
Filed:
May. 09, 2011
Gael Pilard, Wankheim, DE;
Herbert Hoelzemann, Villingen, DE;
Dietmar Hepper, Hannover, DE;
Stephan Knappmann, Zimmern ob Rotlweil, DE;
Gael Pilard, Wankheim, DE;
Herbert Hoelzemann, Villingen, DE;
Dietmar Hepper, Hannover, DE;
Stephan Knappmann, Zimmern ob Rotlweil, DE;
Thomson Licensing, Issy les Moulineaux, FR;
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 material, wherein the data structure comprises diffractive pits and lands having a size above an optical resolution limit of a pickup for reading of the data and super-resolution pits and lands having a size below the optical resolution limit, said pits and lands having a defined length with regard to a channel bit length. A diffractive land preceding a super-resolution pit is changed by a first length depending on the laser power of the pickup, and/or a diffractive pit preceding a super-resolution land is changed by the first length depending on the laser power of the pickup, to compensate a phase shift of the super-resolution pit, respectively super-resolution land.