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:
May. 10, 2016
Filed:
Jul. 26, 2013
Honeywell International, Inc., Morristown, NJ (US);
Igor Chebruch, Warminster, PA (US);
Daniel R. Shakarjian, Horsham, PA (US);
Charles Martin, Blue Bell, PA (US);
Honeywell International Inc., Morris Plains, NJ (US);
Abstract
A method includes receiving a first clock signal from a first clock source at a clock monitoring unit. The method also includes counting a first number of pulses in the first clock signal during a specified time period. The method further includes identifying a fault with the first clock source when the first number does not have an acceptable value. In addition, the method includes testing the clock monitoring unit by determining whether the clock monitoring unit identifies an artificial clock fault. The time period could be defined by receiving a second clock signal, counting a second number of pulses in the second clock signal, and signaling when the second number meets or exceeds a threshold value. In response to the identified fault with the first clock source, a second clock source could be used to provide a second clock signal.