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. 17, 1999
Filed:
Sep. 22, 1997
Applicant:
Inventor:
Blaine Quentin Geddes, Kemptville, CA;
Assignee:
Northern Telecom Limited, , US;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L / ;
U.S. Cl.
CPC ...
327-3 ; 327 12 ;
Abstract
A method of performing phase-frequency comparison comprising the steps of receiving first and second clock signals; comparing the signals by triggering flip-flop circuits controlled by AND gates, and providing a first output when first signal is in advance of the second signal, and a second output when second signal is advance of the first signal.