Optical information reproducing apparatus and optical information reproducing method
AssigneeHitachi Consumer Electronics Co., Ltd.
InventorsYusuke Nakamura, Hajime Ishihara
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Abstract
A method of calculating a reliability effective in a decoding process of hologram. An optical information reproducing apparatus that reproduces information with the use of the holography includes an image acquisition unit that reproduces two-dimensional data from a hologram disc, an image equalization unit that makes the two-dimensional data equal to target data having a target PR characteristic, a soft output decoding unit that decodes output data of the image equalization unit on the basis of the PR characteristic, and outputs a decoded result having a reliability, and an error correction unit that conducts an error correction of the data on the basis of the decoded result.
Claims8
An optical information reproducing apparatus that reproduces information with the use of holography, comprising:
- an image acquisition unit that reproduces two-dimensional data from a hologram disc;
- an image equalization unit that makes the two-dimensional data equal to target data having a target PR characteristic;
- a soft output decoding unit that decodes output data of the image equalization unit on the basis of the PR characteristic, and outputs a decoded result having a reliability;
- and
- an error correction unit that conducts an error correction of the data on the basis of the decoded result.
An optical information reproducing method of reproducing information with the use of holography, comprising:
- reproducing two-dimensional data from a hologram disc;
- making the two-dimensional data equal to target data having a target PR characteristic;
- conducting decoding with a reliability of the equalized data on the basis of the PR characteristic;
- and
- conducting an error correction of the data on the basis of the decoded result.
Dependencies are inferred from the claim text.