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

07072280

ABSTRACT:
A recording method for an optical recording medium having an aligned prepit portion straddled on a plurality of tracks in a radial direction, wherein the prepit portion includes first and second prepit portions divided in a track direction, and wherein a prepit of the respective first and second prepit portions is arranged on a boundary of the respective tracks. The first prepit portion has an address information prepit and a synchronous information prepit, and the second prepit portion has a synchronous information prepit. The prepit of the first prepit portion and the prepit of the second prepit portion are arranged with one track displaced in the radial direction and a trailing end of an edge prepit of the first prepit portion is aligned in the radial direction. The method includes providing the optical medium, and recording information on the optical medium by irradiating an optical spot thereon.

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