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. 25, 1995
Filed:
Sep. 27, 1993
Motorola, Inc., Schaumburg, IL (US);
Abstract
A grade calculating circuit (FIG. 1) used for fuzzy inference computation is disclosed. The circuit calculates input label grades based on the relationships between input data (Xi) and the input labels, defined by membership functions (MF) having at least one inclined line segment (FIG. 3), said grades having the upper and lower limit values (g.sub.max, g.sub.min). The circuit comprises: memory (20) for memorizing the input label membership functions by storing, for each of the membership functions, a function form type code, a bending point (Xo) at an end of the inclined line segment and a multiplication rule which designates a multiplier (2.sup.n +2.sup.m) proportional to the inclination of the inclined line segment; a horizontal distance calculating circuit (40) for calculating a horizontal distance (Xi - Xo) between an input datum (Xi) and the bending point (Xo) for said each of the membership functions; a multiplication circuit (50) for performing operation according to said multiplication rule on said horizontal distance, to provide a grade value determined by the inclined line segment with respect to the horizontal distance; and a selecting circuit ( 60) for selecting one value as an input label grade, from the grade value provided by the multiplication circuit, the upper limit grade value of the membership function and the lower limit grade value of the membership function.