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:
May. 04, 1993
Filed:
May. 24, 1990
Applicant:
Inventor:
Ryoichi Imanaka, Hirakata, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ; G11B / ;
U.S. Cl.
CPC ...
369 4438 ; 369 32 ; 369 48 ; 369 4428 ; 369 13 ; 360114 ;
Abstract
An apparatus is provided for recording and reproducing information signals on an opto-magnetic disk at a high speed using plural light beams. The phase relation between the information signals is fixed when they are simultaneously recorded and reproduced on plural tracks of the disk. The overwrite of simultaneously performing erasing and recording of the information signals is executed using the plural beams.
Imanaka, Ryoichi. (1993). Recording and reproducing apparatus using opto-magneto media (U.S. Patent No. 5208792). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5208792
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile