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:
Feb. 17, 2026
Filed:
May. 03, 2024
Applicant:
International Business Machines Corporation, Armonk, NY (US);
Inventor:
Matthew James Paschal, Rochester, MN (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/3185 (2006.01); G11C 19/28 (2006.01); H03K 3/037 (2006.01); H03K 19/20 (2006.01); H03L 7/08 (2006.01);
U.S. Cl.
CPC ...
G01R 31/318552 (2013.01); G01R 31/318541 (2013.01); G11C 19/28 (2013.01); H03K 3/037 (2013.01); H03K 19/20 (2013.01); H03L 7/08 (2013.01);
Abstract
Embodiments herein describe a glitch detector circuit (and method of operation) for detecting glitches in a clock signal. In one embodiment, the glitch detector includes a shift register that samples the reference clock using a clock signal output by a PLL. The value in a first memory element of the shift register can be sampled to previous values that were stored (and then bit shifted) in the shift register. If there is a mismatch, the glitch detector indicates there was a clock glitch in the reference clock, and a corrective action can be performed.