HOLOGRAPHIC RECORDING APPARATUS, HOLOGRAPHIC REPRODUCING APPARATUS, ITS METHOD AND HOLOGRAPHIC MEDIUM

摘要

PROBLEM TO BE SOLVED: To provide a holographic recording and reproducing apparatus and a method which can remove various offset factors by performing a simple encoding/decoding process and can perform reproducing of recorded information data stably to variable factors.

SOLUTION: A holographic apparatus for recording information data by irradiating a holographic medium with a reference light comprises; a light modulation means to output a signal light modulated by information data written in the holographic medium; an encoding means to encode each information data by carrying out finite sum conversion with information data just before in an information data string written by the light modulation means; and a writing means which writes the information data of the information data string in the holographic medium by a reference light.

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