Multiplex signal processing apparatus
CA 1297580 C · Owner: Yasumoto, Yoshio · Inventors: Kageyama, Sadashi; Abe, Yoshio; Yasumoto, Yoshio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a multiplex signal processing apparatus in the band, of a demodulated signal in which a carrier is amplitudemodulated in a vestigial side band by a main signal another, carrier is superposed which is identical in frequency to the first carrier but different in phase by 90° is amplitudemodulated in its double side bands by a multiplex signal which is different from the main signal and which is formed into a vestigial side band signal by a nyquist filter. At least either the frequency or polarity of the multiplex signal is inverted on the transmission side by a multiplier an oscillator and a filter. At least either the frequency or polarity of the multiplex signal is inverted on the …
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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 March 17, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 17, 2009.
- 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
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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.