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:
Oct. 23, 2007
Filed:
Apr. 23, 2004
Declan M. Dalton, Dooradoyle, IE;
Lawrence M. Devito, Tewksbury, MA (US);
Mark Ferriss, Rochestown, IE;
Paul Murray, Raheen, IE;
Declan M. Dalton, Dooradoyle, IE;
Lawrence M. DeVito, Tewksbury, MA (US);
Mark Ferriss, Rochestown, IE;
Paul Murray, Raheen, IE;
Analog Devices, Inc., Norwood, MA (US);
Abstract
A rotational frequency detector system including a rotational frequency detector responsive to a data signal and a clock signal. The rotational frequency detector is configured to compare the frequency of the clock signal to the frequency of the data signal to define frequency up and frequency down signals that adjust the frequency of the clock signal to be equal to the frequency of the data signal. A step control system is responsive to the rotational frequency detector and a step clock signal and is configured to define predetermined pulse widths for the frequency up and frequency down signals.