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:
Sep. 25, 2001
Filed:
Dec. 07, 1998
Kenneth D. Amstutz, Austin, TX (US);
Intrinsity, Inc., Austin, TX (US);
Abstract
The present invention comprises a number transformer that includes at least one updatable parameter, for example a ring counter, that produces an N-nary number. The N-nary number has several bits, exactly one of which has a value of one and the remaining of which have a value of zero. The number transformer also includes a masker, configured to perform a bitwise boolean AND upon the first updatable parameter and a binary number. The binary number is obtained from a linear finite state machine operating as a pseudorandom pattern generator. When several ring counters are included, multiplexers are added to select one of the ring counters. The multiplexers are controlled by a ROM, that iterates through the various test points in a circuit under test.