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:
Feb. 25, 1986
Filed:
Aug. 07, 1984
Applicant:
Inventors:
Steven P Cok, Seattle, WA (US);
Eric R Drucker, Seattle, WA (US);
Assignee:
John Fluke Mfg. Co., Inc., Everett, WA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03L / ; H03K / ;
U.S. Cl.
CPC ...
331 / ; 331 16 ; 331 25 ; 377 48 ;
Abstract
A three modulus prescaler for a phase-locked loop frequency synthesizer includes a N.sub.0 modulus prescaler inputting into a divide-by-two circuit. A microprocessor and internal logic control a three modulus prescaler synchronizer to receive signals from the divide-by-two circuit and output control commands to the N.sub.0 modulus prescaler so as to cause the N.sub.0 modulus prescaler to divide solely by a first or second modulus, or alternately between said first and second modulus, between output pulses of the divide-by-two circuit to extend the synthesizer's bandwidth.