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:
Feb. 16, 1982
Filed:
Oct. 24, 1979
Morgan Adolfsson, Vesteras, SE;
Torgny Brogardh, Vesteras, SE;
ASEA Aktiebolag, Vesteras, SE;
Abstract
The invention relates to a measuring device having a transmitter side and a receiver side, arranged for signal transmission from the transmitter side to the receiver side via an optical connection. The transmitter side comprises members for combining an incoming measuring signal with a signal from a reference voltage source to two different signals, arranged to be transmitted to the receiver side via each of two parallel optical channels. The receiver side comprises means for receiving the two transmitted signals and for controlling the amplification in the signal paths with a view to obtaining compensation for variation of parameters included in the two channels and other elements in corresponding signal paths. In addition, the receiver side includes a device which, from the two transmitted signals, forms a signal (U.sub.ut) independent of the input measuring signal of the transmitter side.