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:
Mar. 08, 2005
Filed:
Aug. 03, 2001
Takuma Yanagisawa, Tsurugashima, JP;
Yoshitsugu Araki, Tsurugashima, JP;
Takanori Maeda, Tsurugashima, JP;
Masayuki Iwasaki, Tsurugashima, JP;
Takuma Yanagisawa, Tsurugashima, JP;
Yoshitsugu Araki, Tsurugashima, JP;
Takanori Maeda, Tsurugashima, JP;
Masayuki Iwasaki, Tsurugashima, JP;
Pioneer Corporation, Tokyo, JP;
Abstract
An optical pickup apparatus includes a photodetector for receiving a diffracted light reflected from the recording medium; and a tilt detector for detecting a tilt amount of the recording medium on the basis of a light intensity within an interference region of a 0th-order diffraction light and at least one diffraction light other than the 0th-order diffraction light of the reflected light received by the photodetector.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile