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. 21, 1992
Filed:
Oct. 04, 1991
Applicant:
Inventors:
Harry D Bush, Palatine, IL (US);
Paul J Weber, Elgin, IL (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L / ; H03L / ;
U.S. Cl.
CPC ...
331 / ; 331 25 ; 331 27 ; 377107 ; 377119 ;
Abstract
An asynchronously resettable counter/divider (25) in a phase-locked loop (PLL) for a frequency synthesizer (12) reduces the lock-up time for the PLL by resetting the resettable counter/divider when the phase difference between the output signal from a VCO (20, 21) and a low frequency reference signal (30) exceeds a predetermined value.