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. 11, 1989
Filed:
Oct. 23, 1987
Applicant:
Inventor:
Don A Daane, Burnsville, MN (US);
Assignee:
Control Data Corporation, Minneapolis, MN (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364717 ;
Abstract
Sequential faults are not tested for adequately when using test input operands generated in the chip from a random number generator to test the logic circuits in a very large scale integrated (VLSI) chip. Accordingly this application teaches the efficient construction of a test operand generator, using an input register with properly randomized feedback to break up sequential patterns which would otherwise develop in the input register.