Patent ID: 7088653
Filing Date: 2006-08-08
Classification: G11B

Abstract:
1. An optical recording method for an optical medium including a disk-like substrate, a spiral or concentric-shaped groove structure along tracks formed on the disk-like substrate, each of the tracks being divided into a plurality of units, each of the units including a dropout portion of the groove structure along the track in a circumferential direction of the track, the dropout portion being a non-groove portion, and the groove structure being wobbled in a fixed cycle in a radial direction, the fixed cycle of the wobble continuing in the circumferential direction along the track, wherein when the wobble is formed in the circumferential direction of the track, the dropout portion is formed so that a phase of the wobble is continued with a phase of the wobble of the groove structure within another unit adjacent to the dropout portion, the method comprising the steps of: providing the optical medium; and recording information on the optical medium by irradiating an optical spot thereon.