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. 17, 2012
Filed:
Jul. 30, 2008
Hiroya Kakimoto, Gunma, JP;
Fuyuki Miyazawa, Gunma, JP;
Hiroya Kakimoto, Gunma, JP;
Fuyuki Miyazawa, Gunma, JP;
Taiyo Yuden Co., Ltd., Tokyo, JP;
Abstract
An optical disc recording method includes: determining that an optical disc to be recorded is an optical disc including a recording layer comprising organic dye; and controlling a laser such that space formation power Ps necessary for space formation is equal to or smaller than bias power Pbw. In a case wherein the relation of Ps<Pbw is satisfied, the relation between the asymmetry value, β value, and main power Pw includes substantial linearity. Accordingly, control of the main power Pw can be performed with the asymmetry value and β value as evaluation indexes, and accordingly, disturbance or the like can be readily handled.