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:
Dec. 16, 2003
Filed:
Nov. 30, 2000
Applicant:
Inventor:
Koichiro Nishikawa, Takasaki, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B 5/09 ;
U.S. Cl.
CPC ...
G11B 5/09 ;
Abstract
An optical information reproducing apparatus for reproducing information by irradiating a recording medium with a reproducing light beam includes a light source for generating the reproducing light beam, a reproducing circuit for reproducing a reproduction signal by using the light beam, and an adjusting circuit for adjusting the light beam power. The adjusting circuit adjusts the beam power to a value larger than the light beam power at which a value obtained by normalizing the reproduction signal with the beam power is maximized.