Patent ID: 7310173
Filing Date: 2007-12-18
Classification: G03H,G11B

Abstract:
1. A hologram recording apparatus comprising: a laser beam source, split means for splitting a laser beam from the laser beam source into a first laser beam and a second laser beam, a one-dimensional optical modulator in which a plurality of light-modulating pixels are arranged, and a hologram-recording-medium disposing portion, wherein part of the light-modulating pixels in said one-dimensional optical modulator optically modulate part of said first laser beam by a digital-data signal, and at least part of the other light-modulating pixels in two or more positions in said one-dimensional optical modulator optically modulate at least part of the other of said first laser beam by sync signals to obtain signal light by the laser beam, the signal light and reference light by said second laser beam are applied to a hologram recording medium to form on the hologram recording medium a recording section for said digital-data signal and recording sections for said sync signals in two or more positions having a predetermined interval.