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:
Jan. 02, 2018
Filed:
Mar. 09, 2016
Applicant:
Microsemi Semiconductor Ulc, Kanata, CA;
Inventors:
Mark A Warriner, Ottawa, CA;
Mark L Thrower, Carrollton, TX (US);
Assignee:
Microsemi Semiconductor ULC, Kanata, Ontario, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 11/07 (2006.01); G01R 31/00 (2006.01); G06F 1/04 (2006.01);
U.S. Cl.
CPC ...
G06F 11/0757 (2013.01); G01R 31/00 (2013.01); G06F 1/04 (2013.01); G06F 11/0706 (2013.01);
Abstract
A low latency digital clock fault detector has an edge detector including a delay line generating pulses on edges o an incoming clock signal of a width determined by the length of said delay line. A watchdog timer with flip-flops in a pipeline configuration has a first input held at a static logic level, a second input receiving a reference clock, and a third reset input. The watchdog is being responsive to the pulses to maintain a stable output in the presence of said pulses and generate a fault indication in the absence of the pulses.