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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 7079478 B1

PDFFull Text
Expired
Date of Patent:
Jul. 18, 2006

Filed:

Jul. 12, 2005

Optical reproducing method for optical medium with aligned prepit portion

Applicants:

Harukazu Miyamoto, Kodaira, JP;

Hirofumi Sukeda, Tokorozawa, JP;

Motoyasu Terao, Tokyo, JP;

Hiroyuki Minemura, Yokohama, JP;

Tetsuo Andou, Kokubunji, JP;

Inventors:

Harukazu Miyamoto, Kodaira, JP;

Hirofumi Sukeda, Tokorozawa, JP;

Motoyasu Terao, Tokyo, JP;

Hiroyuki Minemura, Yokohama, JP;

Tetsuo Andou, Kokubunji, JP;

Assignees:

Hitachi, Ltd., Tokyo, JP;

Hitachi Maxell, Ltd., Ibaraki, JP;

Attorney:

Antonelli, Terry, Stout and Kraus, LLP.

Primary Examiner:

Ali Neyzari

Int. Cl.
CPC ...
G11B 7/24 (2006.01);
U.S. Cl.
CPC ...
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.

Find Patent Forward Citations

Miyamoto, Harukazu. (2006). Optical reproducing method for optical medium with aligned prepit portion (U.S. Patent No. 7079478). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7079478

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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