Controlled oscillator
CA 1070821 A · Owner: Rca Corporation · Inventors: Harwood, Leopold A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
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 antiphase 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 …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted January 29, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 29, 1997.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.