Patent ID: 8760988
Filing Date: 2014-06-24
Classification: G11B

Abstract:
1. An optical information recording apparatus for recording information using holography, the apparatus comprising: a laser light source that generates a signal beam; a spatial light modulator that modulates the signal beam generated by the laser light source; a signal beam optical system that directs the signal beam modulated by the spatial light modulator to an optical information recording medium; a reference beam optical system that generates and directs a reference beam to the optical information recording medium; a signal generation unit that generates data by an encoding method in which a lower-limit of a number of continuous ON/OFF pixels in an array in one direction of pixels in the spatial light modulator is K (k≧2, K: natural number); and a filter that limits a size of the signal beam entering the optical information recording medium to a size according to the lower-limit of the number of continuous pixels for the data generated by the signal generation unit.