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:
Jul. 07, 2015
Filed:
Sep. 18, 2013
Analog Devices, Inc., Norwood, MA (US);
Piotr Olejarz, Watertown, MA (US);
Ara Arakelian, Watertown, MA (US);
Lewis Malaver, South Boston, MA (US);
Analog Devices, Inc., Norwood, MA (US);
Abstract
A clock alignment detector described herein can detect alignment between clock signals within a defined margin of error, such as a defined margin of phase error. The margin of phase error can be varied to achieve various degrees of lock detection precision. Clock alignment detector can detect alignment between rising edges of the clock signals, falling edges of the clock signals, or both the rising and falling edges of the clock signals. The clock alignment detector can be implemented as a lock detector for a phase-locked loop that is configured to detect and maintain a phase relationship between a reference clock signal and a feedback clock signal, where the clock alignment detector detects alignment between the reference clock signal and the feedback clock signal.