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.

Date of Patent:
Jul. 13, 1999

Filed:

Feb. 20, 1997
Applicant:
Inventors:

Benjamin J Brown, Lake Oswego, OR (US);

John F Donaldson, Thousand Oaks, CA (US);

Kurt B Gusinow, Agoura, CA (US);

Assignee:

Teradyne, Inc., Boston, MA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ;
U.S. Cl.
CPC ...
371 2231 ; 371 271 ;
Abstract

A semiconductor tester with features to facilitate testing of embedded memories. The circuitry allows tests to be generated algorithmically, but can be used in conjunction with scan test structures of semiconductor devices. Programming and debug time can be significantly reduced. The tester includes an algorithmic pattern generator that can generate a pattern for testing a memory. The tester also includes serializer circuits coupled to the algorithmic pattern generators that can convert the test pattern generated by the algorithmic pattern generator into one or more serial bit streams useful for scan testing an embedded memory.


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