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:
Aug. 13, 2024
Filed:
Oct. 20, 2021
Nxp B.v., Eindhoven, NL;
NXP B.V., Eindhoven, NL;
Abstract
The disclosure relates to monitoring of feedback systems such as phase lock loops. A system is disclosed, comprising: a feedback circuit (); and a monitoring module (). The monitoring module () is configured to: i) receive actual values of at least one state variable describing the state of the feedback circuit at a first time; ii) determine a predicted future value of the at least one state variable at a second time from the actual values at the first time using a model of the feedback circuit; iii) receive actual values of the at least one state variable at the second time; iv) compare the predicted future value of the at least one state variable at the second time with the actual value of the at least one state variable at the second time; and v) determine whether the feedback circuit has a fault condition, depending on the results of step iv).