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:
Mar. 13, 2001
Filed:
Jan. 26, 1999
John M. Heumann, Loveland, CO (US);
Agilent Technologies, Inc., Palo Alto, CA (US);
Abstract
An X-ray inspection system incorporates an improved technique for determining, in an X-ray image of a multilayered assembly, the gray level component of a first material in the presence of a second material. The total gray level of the image is dependent upon the physical characteristics of each material comprising the assembly. The present invention accurately determines the component of the total image gray level due to the first material. In the case of circuit board inspections using X-ray images of solder connections, a calibration procedure facilitates the direct conversion of the gray level component due to the solder connection to the thickness of the solder connection.