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:
Jul. 21, 1992
Filed:
Dec. 19, 1990
George A Person, Phoenix, AZ (US);
Honeywell Bull Inc., Billerica, MA (US);
Abstract
In order to determine if a micropackage containing a plurality of integrated circuits, at least some of which are supplied with a reference voltage, should be classified as 'risky' the reference voltage current is measured for each micropackage in a group of logically identical micropackages. The measurements are arranged for statistical analysis, and an initial threshold is selected above which a micropackage is classified as 'risky'. The subsequent history in operation of measured micropackages, as well as reference voltage measurements on additional newly fabricated like micropackages, is entered into the database to permit refining the position of the threshold. In one variant, all micropackages in an initially measured group are 'passed'.