发明授权
US07092350B2 Optical reproducing method for optical medium with aligned prepit portion 有权
具有对准预凹坑部分的光学介质的光学再现方法

Optical reproducing method for optical medium with aligned prepit portion
摘要:
A reproducing method for reproducing information from an optical recording medium having an aligned prepit portion straddled on a plurality of tracks in a radial direction, the prepit portion including first and second prepit portions divided in a track direction and arranged on a boundary line of the respective tracks. The first and second prepit portions each have address information prepits arranged at every two-track pitch in the radial direction, and the address information prepit of the first and second prepit portions are arranged with one track displaced in the radial direction. A trailing end of an end prepit of the first prepit portion is aligned with the radial direction. The method includes irradiating an optical spot on the medium, detecting a reflected beam from the medium, and reproducing information on the medium by using a signal obtained by the reflected beam.
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