Patent ID: 9129613
Filing Date: 2015-09-08
Classification: G03H,G11B

Abstract:
1. An optical information reproducing device which reproduces information from optical information recording media by utilizing holography, the optical information reproducing device comprising: a detection unit for detecting position information of a marker, which is a known pattern, from a page, which is a two-dimensional signal reproduced from a hologram; a detection error position presumption unit for presuming whether there is a detection error in marker position information in same page detected by the detection unit and presuming a position where a detection error occurs in a case where there is a detection error on the basis of position information of the marker detected by the detection unit within a predetermined range; a position amendment unit for amending marker position information in the detection error position identified by the detection error position presumption unit; and a signal detection unit for detecting each signal from within a page on the basis of the marker position information amended by the amendment unit.