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:
Oct. 12, 1993
Filed:
Oct. 17, 1991
Cornelis S Kooijman, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
A measuring device comprises at least two transducer units for sensing input quantities (A.sub.i) and for producing signals which are proportional to the logarithm of the input quantities. The measuring device also includes a normalization circuit which determines the ratio of a linear combination of input quantities to the sum of the input quantities. The normalization circuit thus comprises a number of first identical bipolar transistors which correspond to the number of input quantities. The transistors include a base, an emitter and a collector. An output signal of a transducer unit is applied to the base of the corresponding first transistor. The emitters of these transistors are collectively connected to a constant current source via an emitter junction.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile