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:
May. 14, 2013
Filed:
Nov. 03, 2009
Takeshi Ogata, Kawasaki, JP;
Takeshi Ogata, Kawasaki, JP;
Hitachi Consumer Electronics Co., Ltd., Tokyo, JP;
Abstract
The purpose of the present invention is to provide an optical information recording/reproducing device and the like that can suppress a decrease in a recording speed even where an optical information recording medium including multiple layers has eccentricity. The optical information recording/reproducing device records information, by treating a predefined area in a second layer corresponding to a position of a first layer at which a defect is detected, as a defect area. The optical information recording/reproducing device reproduces information, by treating a predefined area in the second layer corresponding to a position of the first layer at which a defect is registered, as a defect area. The radial distance of the defect area is preferably greater than a bonding error between the first and second layers.