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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C369S275300

Reexamination Certificate

active

07072288

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 a prepit of respective first and second prepit portions being arranged on a boundary of the respective tracks. The first prepit portion having an address information prepit and a synchronous information prepit, and the second prepit portion having a synchronous information prepit. The prepit of the first and second prepit portions being arranged at every two-track pitch in the radial direction. The apparatus including 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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