Holographic storage with combined orthogonal phase codes and random phase codes
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United States of America Patent
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May 6, 1997
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app pub date -
Jun 29, 1994
filing date -
Jun 29, 1994
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Abstract
A method and apparatus for holographic storage with combined orthogonal phase codes and random phase codes are provided in which a reference beam (18) is encoded with a combination orthogonal phase code and random phase code by a phase encoder (28). A data pattern is imposed on an object beam (20) by pattern encoder (38). Both the reference beam (18) and the object beam (20) are directed to a particular stack site on a storage medium (32).
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