Multiplexed holographic recording apparatus and method and holographic reproduction apparatus and method
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United States of America Patent
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Nov 1, 2011
Grant Date -
Feb 19, 2009
app pub date -
Oct 17, 2006
filing date -
Oct 17, 2005
priority date (Note) -
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Abstract
A multiplexed holographic recording apparatus records multiplexed holograms in a plurality of recording regions that are formed on a holographic recording medium. In particular, the apparatus first records a predetermined number of multiplexed holograms in each of the recording regions formed in a predetermined range or an overall range of the holographic recording medium through holographic recording performed N times, and then performs the (N+1)th holographic recording in each recording region formed in the predetermined range or the overall range. When n other recording regions (where n=0, 1, 2, . . . ) are superimposed on each recording region formed on the holographic recording medium, a difference in the degree of multiplexing between the recording regions formed in the predetermined range or the overall range of the holographic recording medium does not exceed a predetermined value of n+1.
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