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. 10, 2001
Filed:
Dec. 12, 1997
Applicant:
Inventors:
Luke D. Lacroix, Williston, VT (US);
Leo A. Noel, Essex Junction, VT (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 3/128 ;
U.S. Cl.
CPC ...
G01R 3/128 ;
Abstract
A method for testing high I/O chips on low I/O testers is provided. Chips having programmable I/Os are used with an interface board that shorts groups of I/Os to a single tester channel. Patterns are provided to the chip to enable one I/O of each group at a time, thereby allowing all I/Os in each group to be tested sequentially. Thus, a multiplexing function is divided between the chip itself and the interface board.