Patent ID: 7082087
Filing Date: 2006-07-25
Classification: G11B

Abstract:
1. An information reproducing apparatus for reproducing information recorded on an optical recording medium including a disk-like substrate, a spiral or concentric-shaped groove structure along a track formed on the disk-like substrate, the groove structure being wobbled in a radial direction of the optical recording medium, the wobbled groove structure being utilized for recording of recording data, the track being divided into a plurality of recording units in the track direction by at least one radial boundary line, at least two adjacent recording units in the radial direction of the optical recording medium comprise one zone, the optical recording medium including a plurality of zones, and the groove structure included in the adjacent recording units within at least one zone having substantially the same number of wobbling, the information reproducing apparatus comprising: an irradiation source for irradiating a light spot on the optical recording medium; optical detection means for detecting a reflected light from the optical recording medium; and reproduction means for reproducing information by using a signal from the optical detection means.