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. 13, 2007
Filed:
Dec. 20, 2001
Tomofumi Watanabe, Gifu-ken, JP;
Koji Hayashi, Hashima, JP;
Hideto Uchida, Katano, JP;
Yuichiro Tsukamizu, Ichinomiya, JP;
Tomonori Kamiya, Bisai, JP;
Tomofumi Watanabe, Gifu-ken, JP;
Koji Hayashi, Hashima, JP;
Hideto Uchida, Katano, JP;
Yuichiro Tsukamizu, Ichinomiya, JP;
Tomonori Kamiya, Bisai, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
A data recording device for recording data on an optical disc by irradiating a laser pulse on the optical disc while controlling rotation of the optical disc at a constant angular velocity. The device includes a laser condition varying unit that changes a peak value of the laser pulse in accordance with a value relating to a linear velocity of the optical disc at a position at which the laser pulse is irradiated.