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:
Apr. 07, 1998
Filed:
May. 22, 1996
Applicant:
Inventors:
David M Proudfoot, Stanford, CA (US);
Peter A Reichert, Thousand Oaks, CA (US);
Assignee:
Teradyne, Inc., Boston, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; G01R / ;
U.S. Cl.
CPC ...
39518308 ; 371 27 ;
Abstract
Fast loading of a vector test pattern in a semiconductor device tester. Fast loading is achieved through the use of delta coding of vectors in conjunction with a vector cache in the vector loading circuitry of the tester. In this way, the total amount of information transmitted during the loading operation is reduced. Hardware required to implement the method is minimized by using random access memory conventionally found in automatic test equipment for the vector cache.