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. 07, 2000
Filed:
Dec. 15, 1997
Yuichi Naito, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In an optical information recording-reproducing apparatus, a spot for recording and a plurality of spots for reproduction irradiate, from an optical head, an information recording medium having a plurality of tracks and having address information recorded at the head of each track. The plurality of light spots are caused to scan the plurality of information tracks of the recording medium at one time to thereby record information or reproduce recorded information. Further, in the apparatus, such determination is made, on the basis of the address information reproduced by a predetermined preceding one of the plurality of spots for reproduction, as to whether the track on which the spot for recording or the spots for reproduction are positioned is a target track.