Optical storage medium, mastering method and apparatus for reading of respective data
AssigneeThomson Licensing
InventorsStephan Knappmann, Michael Krause, Stefan Kimmelmann
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Abstract
The optical storage medium comprises a substrate layer, and a data layer having a mark/space data structure with data arranged in tracks on the substrate layer, , wherein between neighboring tracks alternatingly a groove section or a land section without a groove is arranged. The tracks, groove sections and land sections may be arranged by providing a single spiral, two spirals, or four spirals on the optical storage medium. The optical storage medium is in particular an optical disc comprising a nonlinear layer with a super-resolution structure arranged above the data layer.
Claims17
Optical storage medium comprising
- a substrate layer,
- a data layer having a mark/space data structure with data arranged in data tracks on the substrate layer, and
- a nonlinear layer with a super-resolution structure arranged above the data layer,
- wherein the optical storage medium is a read-only disc with the mark/space data structure provided as a pit/land structure, wherein
- the optical storage medium comprises a region, in which in a radial direction of the disc a consecutive sequence of a data track, a groove section, a data track, a land section, a data track, and a groove section is alternately arranged, and wherein
- the distance between marks of adjacent data tracks is below the diffraction limit of a pickup for reading of the data of the optical storage medium, and the distance between groove sections is above the diffraction limit of the pickup.
Dependencies are inferred from the claim text.