Patent ID: 7995257
Filing Date: 2011-08-09
Classification: G03H,G11B

Abstract:
1. A holographic storage medium in which a hologram including data is recorded by interference of a signal beam and a reference beam, comprising: a plurality of pages on which the data is recorded in a superimposed fashion, the plurality of pages comprising first and second ones of the pages respectively recorded with the signal beam incident on the holographic storage medium at first and second incidence angles, a difference of the first and second incidence angles corresponding to a maximum selectivity of the first one of the pages and the second one of the pages; and an additional page recorded between the first one of the pages and the second one of the pages, the additional page being recorded with the signal beam incident on the holographic storage medium at a third incidence angle, the third incidence angle being between the first and second incidence angles, the additional page comprising: