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:
Mar. 20, 2007
Filed:
May. 30, 2000
Applicants:
Kenji Narumi, Ibaraki, JP;
Kenichi Nishiuchi, Hirakata, JP;
Noboru Yamada, Hirakata, JP;
Takeo Ohta, Nara, JP;
Inventors:
Kenji Narumi, Ibaraki, JP;
Kenichi Nishiuchi, Hirakata, JP;
Noboru Yamada, Hirakata, JP;
Takeo Ohta, Nara, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An edge position of a recording pulse is corrected according to multi-valued information for determining the width of a mark in an edge position correction circuit, thereby it is possible to form a mark edge in a correct position when a mark with any width is to be corrected to enable a correct multi-valued recording/reproducing.