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:
Dec. 15, 1992
Filed:
Sep. 07, 1990
Applicant:
Inventors:
Gordon D Robinson, Acton, MA (US);
John G Deshayes, Leominster, MA (US);
Assignee:
GenRad, Inc., Concord, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ;
U.S. Cl.
CPC ...
371 223 ; 371 226 ;
Abstract
A method of performing in-circuit testing of interior points of circuit boards containing both boundary-scan and non-scan components that utilizes the boundary-scan facility. The testing procedure involves isolation of the non-scan components and either driving or sensing voltages at physically accessible test sites. The method permits use of isolation and multiplexing solutions that are ordinarily developed for in-circuit testing of board components, resulting in efficient design and implementation of interconnect tests.