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:
Feb. 24, 2009
Filed:
Jul. 13, 2005
Mitsuo Sekiguchi, Gunma-gun, Gunma 370-3347, JP;
Hiroya Kakimoto, Gunma-Gun, Gunma 370-3347, JP;
Isao Matsuda, Gunma-Gun, Gunma 370-3347, JP;
Yoshikazu Sato, Gunma-Gun, Gunma 370-3347, JP;
Mitsuo Sekiguchi, Gunma-gun, Gunma 370-3347, JP;
Hiroya Kakimoto, Gunma-Gun, Gunma 370-3347, JP;
Isao Matsuda, Gunma-Gun, Gunma 370-3347, JP;
Yoshikazu Sato, Gunma-Gun, Gunma 370-3347, JP;
Other;
Abstract
A condition of a recording pulse comprising a top pulse and a following pulse is determined in a predetermined order. In some embodiments, an mT pulse condition is first determined by test recordings with various power and pulse conditions, involving an inspection of recording quality; then an m'T/(n−m)T ratio is determined by test recording under the mT pulse condition fixed; and finally an nT pulse is configured based on the ratio. A phase shift can be corrected by test recording with the nT pulse.