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:
Jan. 12, 1982
Filed:
Oct. 09, 1979
John C Grebe, Jr, Norristown, PA (US);
William R Freund, Jr, Hatfield, PA (US);
Emerson Electric Co., St. Louis, MO (US);
Abstract
A voltage controlled oscillator (VCO) system includes a feedback loop for maintaining the linearity, temperature stability and accuracy of the VCO. The feedback loop includes means for producing a fed-back train of pulses having an amplitude equal to a reference voltage and a duty cycle proportional to the ratio of the frequency of the output of the VCO to a reference frequency. The output frequency is thereby made proportional to the input voltage times the ratio of the reference frequency to the reference voltage.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile