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:
Jan. 21, 2003
Filed:
Aug. 29, 2001
Applicant:
Inventors:
Hideki Hayashi, Tsurugashima, JP;
Toshio Goto, Tsurugashima, JP;
Assignee:
Pioneer Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 7/00 ;
U.S. Cl.
CPC ...
G11B 7/00 ;
Abstract
An optical recording medium that enables a recording or reproduction apparatus to perform accurate tracking servo control even if intersymbol interference occurs. An optical recording medium includes a plurality of frames continuously extending in an information reading direction. Each frame is defined by a servo region for recording tracking pits used in tracking servo control and a data region for recording information data. A position of each of the respective tracking pits in each respective servo region is changed in the information reading direction between successive frames.