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:
Apr. 04, 1995
Filed:
Nov. 18, 1993
Osamu Koyama, Kawasaki, JP;
Tadashi Kato, Kawasaki, JP;
Masayuki Usui, Yokohama, JP;
Yoshihiko Watanabe, Yokohama, JP;
Hisatoshi Baba, Yokohama, JP;
Hirotake Ando, Tokyo, JP;
Hideo Nakajima, Yokohama, JP;
Shinji Sakai, Yokohama, JP;
Kenji Tamaki, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An optical information processing apparatus includes a unit for scanning a track formed on an optical recording medium with a light beam, a tracking control unit for correcting a position shift between a radiation position of the light beam on the medium and the track, and an offset correction unit for automatically correcting an offset of the tracking control unit.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile