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:
Jul. 23, 1991
Filed:
Jul. 27, 1988
Applicant:
Inventors:
Akio Ohishi, Tokyo, JP;
Masayuki Inoue, Yokohama, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ;
U.S. Cl.
CPC ...
369122 ; 369121 ; 369116 ;
Abstract
An optical information recording-reproducing system is provided using a laser diode with independent pulsating emission for recording and/or reproducing information, with the laser pulse period T (sec) and the distance L (m) between the semiconductor laser and information recording medium being set to meet the inequality:
Ohishi, Akio. (1991). System having a function of reproducing optical information (U.S. Patent No. 5034942). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5034942
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile