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:
Apr. 27, 1976
Filed:
Jul. 19, 1974
Robert John Cooke, Farnborough, EN;
The Solartron Electronic Group Ltd., Farnborough, EN;
Abstract
Digital calculating apparatus, which is particularly suitable for linearizing a digitized output signal produced by a non-linear transducer such as a thermocouple, comprises a store connected in a recirculating loop including combined adder and subtractor circuit, means for changing a number entered in the store to a predetermined target value by a linear or an exponential progression involving groups of N adding or subtracting-cycles, means for counting and storing the numbers of groups of cycles required to achieve the target value, and means for entering another number in the store and subjecting it to the same numbers of groups of M adding or substracting cycles, where M .ltoreq. N, to produce the required answer. For linearizing the digitized output signal x from a thermocouple, where x is given by T = a.sub.o + a.sub.1 x + a.sub.2 x.sup.2 + . . . ta.sub.n x.sup.n, the apparatus is used, with M=N=1, to generate the reciprocal Y of X, and then used to perform successive add and divide recursions to evaluate the equation ##EQU1##