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:
Oct. 12, 2021
Filed:
Mar. 06, 2020
International Business Machines Corporation, Armonk, NY (US);
John B. DeForge, Barre, VT (US);
Kirk D. Peterson, Jericho, VT (US);
Theresa Newton, St. George, VT (US);
Andrew Turner, Underhill, VT (US);
Terence B. Hook, Jericho, VT (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method and performance-screen ring oscillator (PSRO) test structure for designing, testing, and manufacturing a VLSI device. The performance-screen ring oscillator (PSRO) test structure comprises a ring oscillator having a plurality of stages; one or more selectable loads, each selectable load being coupled to an output of a corresponding one of the stages of the ring oscillator; and one or more multiplexers, each multiplexer being coupled to at least one stage of the ring oscillator and being configured to select a configuration of the corresponding selectable load.