Method and apparatus for classifying currency articles
AssigneeMars, Incorporated
InventorKatharine Louise King
Life of this patent
Estimating the term…
Abstract
Articles of currency are measured and the measurements then used to determine whether the articles belong to any of a plurality of respective target classes. A decision is made as to whether the article is to be rejected or accepted. A verification procedure is then carried out to determine, with greater reliability, whether the article belongs to any of the target classes, irrespective of whether the article was accepted or rejected. The verification procedure involves a plurality of measurements together with correlation data representing the expected correlations between the measurements based on populations of target classes. The selection of measurements is dependent upon the target class under consideration.
Claims18
A method of handling an article of currency comprising determining whether the article of currency belongs to one of a plurality of target classes by performing different tests for the respective target classes, each test involving processing a selection of derived measurements of the article with acceptance data representing the correlation between those measurements in a population of the respective target class, wherein the selection of measurements is different for different target classes.
A method of handling an article of currency, the method comprising:
- (a) performing a first determination as to whether the article belongs to one of a plurality of target classes by using derived measurements of the article and acceptance data for the respective class;
- (b) deciding whether to accept or reject the article;
- (c) then performing a second determination of whether the article belongs to said one target class, the second determination involving a test which was not performed as part of the first determination, and being performed on an article which was deemed by the first determination not to belong to said one target class;
- and
- (d) modifying acceptance data relating to at least one of the target classes in dependence on the results of the second determination.
Dependencies are inferred from the claim text.