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. 23, 1984
Filed:
Feb. 03, 1982
Hiroaki Sakoe, Tokyo, JP;
Nippon Electric Co., Ltd., Tokyo, JP;
Abstract
A pattern matching device generally comprises a first circuit (36) for calculating an elementary similarity measure between two feature vectors, one and the other selected from two feature vector sequences representative of two patterns, respectively, and a second circuit (37) for iteratively calculating a recurrence formula which defines a recurrence value by a sum of such an elementary similarity measure and an extremum of a prescribed number of previously calculated recurrence values. The recurrence formula eventually gives an overall similarity measure between the two patterns. The elementary similarity measure is now calculated by calculating a primitive similarity measure by a conventional circuit (15) and subtracting a predetermined value therefrom by a compensation circuit (31). Preferably, the second circuit (37) comprises circuitry (41, 42) for preventing the sum from overflowing outwardly of a preselected range.