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. 04, 2026
Filed:
Sep. 28, 2023
Qulsar, Inc., San Jose, CA (US);
Kishan Shenoi, San Jose, CA (US);
Viavi Solutions, Inc., Chandler, AZ (US);
Abstract
A subordinate clock includes a first servo loop, a second servo loop, and a third servo loop, each include a respective digitally controlled oscillator (DCO). The first DCO receives (i) a first error signal that is associated with a physical layer reference signal and (ii) an oscillating signal and outputs a physical layer clock signal. The second DCO receives (i) a second error signal associated with the physical layer clock signal and (ii) the oscillating signal and outputs an intermediate clock signal. The third DCO receives (i) a third error signal associated with a grandmaster reference signal generated by a grandmaster clock and (ii) the intermediate clock signal and outputs a final clock signal with an average frequency that is generally equal to an average frequency of the grandmaster reference signal.