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.:
Date of Patent:
Jul. 04, 2006
Filed:
Jul. 12, 2005
Harukazu Miyamoto, Kodaira, JP;
Hirofumi Sukeda, Tokorozawa, JP;
Motoyasu Terao, Tokyo, JP;
Hiroyuki Minemura, Yokohama, JP;
Tetsuo Andou, Kokubunji, JP;
Harukazu Miyamoto, Kodaira, JP;
Hirofumi Sukeda, Tokorozawa, JP;
Motoyasu Terao, Tokyo, JP;
Hiroyuki Minemura, Yokohama, JP;
Tetsuo Andou, Kokubunji, JP;
Hitachi, Ltd., Tokyo, unknown;
Hitachi Maxell, Ltd., Ibaraki, JP;
Abstract
A recording apparatus for recording information to an optical recording medium having grooves and lands alternately provided in a radial direction, information recording areas being formed in both of the grooves and the lands, and at least one prepit region where a groove is not formed. In the prepit region, first and second information marks are disposed on a virtual extension of respectively a first boundary between one groove and one adjacent land and a second boundary between the one groove and an other adjacent land, the first and second information marks being disposed so as not to exist at opposing positions on both of the first and second boundaries of the one groove. The 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.