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. 30, 1996
Filed:
Oct. 17, 1994
Applicant:
Inventor:
Keith A Engstrom, Laguna Niguel, CA (US);
Assignee:
Alps Electric (U.S.A.) Inc., San Jose, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C09G / ;
U.S. Cl.
CPC ...
345165 ; 345166 ; 250238 ;
Abstract
A temperature compensated opto-electronic circuit structure including a emitter connected to one input of a comparator to provide a reference signal. A detector signal is applied to another input terminal of a comparator, and the output of the comparator is determined by a difference between the reference signal and the detector signal. As the temperature of the opto-electronic circuit increases and decreases, the reference signal is automatically adjusted due to the temperature-related forward voltage changes of the emitter.