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:
Jun. 25, 1996
Filed:
Jul. 07, 1993
Shinichirou Harasawa, Kawasaki, JP;
Fujitsu Limited, Kanagawa, JP;
Abstract
A semiconductor laser driving circuit includes an adder for adding outputs of a plurality of semiconductor lasers and obtaining an output sum of the semiconductor lasers, and a comparator for comparing the output sum with a reference signal which is set in advance depending on a desired output sum which is to be obtained, and for outputting a comparison signal which is dependent on a result of the comparision. The light emission powers of each of the semiconductor lasers are controlled based on the comparison signal so that the output sum becomes constant.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile