Pincushion correction circuit
CA 1094225 A · Owner: Rca Corporation · Inventors: Haferl, Peter E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
RCA 69,967, PINCUSHION CORRECTION CIRCUIT Abstract of the Disclosure, In a vertical deflection circuit in which a capacitor in parallel with a pair of vertical deflection coils is charged by respective decreasing and increasing amounts of horizontal rate energy during respective first and second portions of a vertical scan interval for providing a substantially linear vertical sawtooth current through the vertical coils, a resonant circuit tuned to approximately the horizontal rate is coupled in parallel with the capacitor and the resonant circuit is coupled with the vertical coils for providing a horizontal rate current component of such a phase in the vertical coils as to correct for top …
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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 20, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 20, 1998.
- 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.