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:
Apr. 26, 1977
Filed:
Nov. 19, 1975
Leopold Albert Harwood, Somerville, NJ (US);
RCA Corporation, New York, NY (US);
Abstract
A controlled oscillator suitable for construction largely in integrated circuit form includes an oscillating amplifier stage and a regenerative feedback loop including a resonant frequency determining element coupled to the amplifier stage for providing an oscillatory reference signal. A phase shift network is provided outside the loop for shifting the phase of the oscillatory signal a predetermined amount. A control circuit which is supplied with the phase shifted oscillatory signal to produce anti-phase signal outputs is responsive to control signal representative of the phase and/or frequency of a predetermined reference signal for selecting portions of the anti-phase output signals. A combining network sums the oscillatory signal and the selected portions from the control circuit to produce a combined signal with a resultant phase which is supplied to the oscillating amplifier stage for maintaining the oscillatory signal in desired relation with the reference signal.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile