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:
Apr. 09, 2019
Filed:
Nov. 30, 2017
Applicant:
GM Global Technology Operations Llc, Detroit, MI (US);
Inventors:
Raffaele Esposito, Siano, IT;
Tiziana Belvedere, Turin, IT;
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D 41/22 (2006.01); F02D 41/26 (2006.01);
U.S. Cl.
CPC ...
F02D 41/26 (2013.01); F02D 41/221 (2013.01);
Abstract
Methods and apparatuses are provided for detecting a defective internal clock signal. A signal transformer receives a clock signal having a duty cycle and a frequency and converts with the signal transformer the clock signal into a monitoring signal having a peak value related to the duty cycle and to the frequency of the clock signal. A detector is connected to the signal transformer to receive the monitoring signal and generates an error signal when the peak value of the monitoring signal is outside a predefined range.