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. 03, 2007
Filed:
Jul. 27, 2001
Mamoru Shoji, Sakai, JP;
Toshiya Akagi, Neyagawa, JP;
Atsushi Nakamura, Moriguchi, JP;
Ariaki Ito, Ikoma, JP;
Yukihiro Yamasaki, Hirakata, JP;
Yasuhiro Honda, Wakayama, JP;
Takashi Ishida, Yawata, JP;
Shinichi Konishi, Nara, JP;
Yuji Hisakado, Hirakata, JP;
Mamoru Shoji, Sakai, JP;
Toshiya Akagi, Neyagawa, JP;
Atsushi Nakamura, Moriguchi, JP;
Ariaki Ito, Ikoma, JP;
Yukihiro Yamasaki, Hirakata, JP;
Yasuhiro Honda, Wakayama, JP;
Takashi Ishida, Yawata, JP;
Shinichi Konishi, Nara, JP;
Yuji Hisakado, Hirakata, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
An optical disk drive and recording power determination method determine the optimum power with consideration for the recording state of a base layer track when determining the optimum power by test recording before recording user data. After recording at a second recording power that is higher than a first recording power by a specific amount, recording is performed at a third recording power that is lower than the first recording power by a specific amount, and the first recording power is set to the recording power for data recording when a specified playback signal quality is achieved.