Interference suppression for transmitted signals and demodulation of vestigial sideband signals
CA 1308445 C · Owner: Independent Broadcasting Authority · Inventors: Beech, Brian Herbert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Interference Suppression for Transmitted Signals and Demodulation of Vestigial Sideband Signals A vestigial sideband (VSB) signal is demodulated by separately a.m. and f.m. demodulating the signal triangulating the a.m. demodulated signal i.e. processing the a.m. demodulated signal to produce an output whose magnitude is a function of the frequency of the a.m. demodulated signal, and combining the result with the f.m. demodulated signal; the output signal is substantially free from the usual distortion which arises due to the absent sideband. The same technique is used to suppress adjacent channel interference (ACI) affecting a signal on one side of its carrier frequency. ACI affecting a …
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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 October 6, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 6, 2009.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.