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. 08, 2011
Filed:
Jul. 24, 2008
Takakiyo Yasukawa, Fujisawa, JP;
Koichi Watanabe, Hachioji, JP;
Naohito Ikeda, Yokohama, JP;
Toshio Shoji, Urayasu, JP;
Yasuhiro Wada, Kawaguchi, JP;
Takakiyo Yasukawa, Fujisawa, JP;
Koichi Watanabe, Hachioji, JP;
Naohito Ikeda, Yokohama, JP;
Toshio Shoji, Urayasu, JP;
Yasuhiro Wada, Kawaguchi, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi-LG Data Storage, Inc., Tokyo, JP;
Abstract
There is provided an information recording and reproducing method and an apparatus for the same capable of optimizing the shift adjustment of a recording pulse recorded in an optical disk even at the time of recording information on the optical disk at a high speed. The shift adjustment value of the recording pulse optimized at a low speed recording on an optical disk is multiplied by a constant value to be taken as the optimum shift conditions of the recording pulse at the high speed recording.