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:
Oct. 02, 2007
Filed:
Nov. 06, 2002
Akihiro Yasuda, Katano, JP;
Shin-ichi Kadowaki, Sanda, JP;
Kousei Sano, Osaka, JP;
Yuuichi Kuze, Settsu, JP;
Akihiro Yasuda, Katano, JP;
Shin-ichi Kadowaki, Sanda, JP;
Kousei Sano, Osaka, JP;
Yuuichi Kuze, Settsu, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
An optical information processing apparatus includes: an optical head for irradiating an optical information recording medium with light, converting the light reflected by the optical information recording medium into a head signal and outputting the head signal; a signal quality index detector for detecting a signal quality index representing quality of the head signal on the basis of the head signal; and a two-dimensional probe for varying the focal position and the spherical aberration of the light radiated onto the optical information recording medium so as to search for a focal position and a spherical aberration that optimize the signal quality index detected by the signal quality index detector.