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:
Jun. 24, 2014
Filed:
Jan. 19, 2012
Steven M. Douskey, Rochester, MN (US);
Ryan A. Fitch, Southfield, MI (US);
Michael J. Hamilton, Rochester, MN (US);
Amanda R. Kaufer, Rochester, MN (US);
Steven M. Douskey, Rochester, MN (US);
Ryan A. Fitch, Southfield, MI (US);
Michael J. Hamilton, Rochester, MN (US);
Amanda R. Kaufer, Rochester, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method and circuit for implementing enhanced Logic Built In Self Test (LBIST) diagnostics, and a design structure on which the subject circuit resides are provided. A plurality of pseudo random pattern generators (PRPGs) is provided, each PRPG comprising one or more linear feedback shift registers (LFSRs). Each respective PRPG includes an XOR feedback input selectively receiving a feedback from another PRPG and predefined inputs of the respective PRPG. A respective XOR spreading function is coupled to a plurality of outputs of each PRPG with predefined XOR spreading functions applying test pseudo random pattern inputs to LBIST channels for LBIST diagnostics.