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US 6,714,510 B2Granted
Information recording medium including layer of uniform thickness and reproducing device thereof
AssigneePioneer Corporation
InventorsTakanori Maeda, Masayuki Iwasaki
Life of this patent
Estimating the term…
Abstract
An information recording medium includes a substrate, and one or a plurality of layers formed on the substrate, wherein at least one of the layers is formed by mixing a base material and a hard material which has a predetermined thickness and determines a predetermined thickness of the layer.
Claims17
An information recording medium, comprising:
- a substrate;
- and
- one or a plurality of layers formed on said substrate;
- wherein at least one of said layers if formed by mixing a base material and a hard material which has a predetermined thickness and determines a thickness of said layer,
- wherein said hard material comprising a medium whose refractive index is not substantially equal to that of said base material.
2 more elements
An information recording medium, comprising:
- a substrate;
- and
- one or a plurality of layers formed on said substrate;
- wherein at least one of said layers is formed by mixing a base material and a hard material which has a predetermined thickness and determines a predetermined thickness of said layer,
- wherein said hard material comprises a medium whose refractive index is not substantially equal from that of said base material, and a mixing ratio at which said hard material is mixed into said base material is selected to be within an error correction ability of an error correction portion contained in a reproduction device which optically reads out information from said information recording medium and reproduces the same.
2 more elements
An information recording medium, comprising:
- a substrate;
- one or a plurality of layers formed on said substrate;
- wherein at least one of said plurality of layers is an intermediary layer, each intermediary layer disposed between a plurality of recording layers, said intermediary layer comprising a mixture of a base material and a hard material which has a predetermined thickness and determines a predetermined thickness of said intermediary layer,
- wherein at least one of said plurality of layers is a protective layer that does not serve as a read surface, said protective layer successively disposed adjacent to only one of said plurality of recording layers, said protective layer comprising a mixture of a base material and a hard material which has a predetermined thickness and determines a predetermined thickness of said protective layer.
1 more element
Dependencies are inferred from the claim text.