Optical reproducing method for optical medium with aligned...

Dynamic information storage or retrieval – Storage medium structure – Optical track structure

Reexamination Certificate

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C369S275400

Reexamination Certificate

active

07079478

ABSTRACT:
A recording apparatus for recording information to 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 having address information prepits arranged at every two-track pitch in the radial direction. The address information prepit of the first and second prepit portions being arranged with one track displaced in the radial direction, and a trailing end of an end prepit of the first prepit portion being aligned with the radial direction. The recording apparatus includes an irradiation source for irradiating a light spot on the optical recording medium, and a controller for controlling an irradiation position of an optical spot from the irradiation source.

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