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:
Jun. 24, 2008
Filed:
Apr. 28, 2004
Yoshiyuki Ishiyama, Kanagawa-ken, JP;
Toshihiro Yamashiro, Kanagawa-ken, JP;
Yutaka Shio, Tottori-ken, JP;
Yasuhide Konishi, Tottori-ken, JP;
Yoshiyuki Ishiyama, Kanagawa-ken, JP;
Toshihiro Yamashiro, Kanagawa-ken, JP;
Yutaka Shio, Tottori-ken, JP;
Yasuhide Konishi, Tottori-ken, JP;
Ricoh Company, Ltd., Yokohama, JP;
Abstract
A system, method, computer program and apparatus for providing regulating signals for regulating the position of an objective lens relative to a track on a disk. The regulating signals are obtained in response to an access request specifying an access target region on the disk. The tracks of a disc are divided into a plurality of zones, each zone having associated signal regulation information. In response to an access request, the signal regulation information for the zone containing the access target region is used to regulate the position of the objective lens.