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:
Nov. 29, 2011
Filed:
Jun. 19, 2007
Applicants:
Hideyuki Muto, Tokorozawa, JP;
Junichi Furukawa, Tokorozawa, JP;
Yoshio Sasaki, Tokorozawa, JP;
Inventors:
Assignee:
Pioneer Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B 20/00 (2006.01); G11B 5/00 (2006.01); G11B 5/52 (2006.01); G11B 5/55 (2006.01); G11B 7/125 (2006.01); G11B 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An optical recording/reproducing systemreads a recorded signal written to a recording track of a recording mediumby light. The light is modulated by a drive signal on which a frequency signal is superimposed. The light is scanned along the recording track at a predetermined scan velocity. The optical recording/reproducing systemincludes a computerand an LD driverthat control, based on the scan velocity, a superimposed magnitude of the frequency signal on the drive signal.