Remanent subcarrier component suppressing device for balanced modulator
CA 1264066 C · Owner: Dx Antenna Company, Limited · Inventors: Katayama, Tomoyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device to be incorporated with a balanced modulator included in a sub-channel of a stereophonic modulator circuit for suppressing a subcarrier component remaining in the output signal of the balanced modulator. This device only includes a full-wave rectifier for rectifying the subcarrier and a mixer for subtractively mixing the output of the modulator with the rectified subcarrier wave thereby effective-, ly cancelling the remanent subcarrier component in very simple and economical fashion.
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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 December 27, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 27, 2006.
- 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.