Scrambled communication system using adaptive transversal filters for descrambling received signals
CA 1331644 C · Owner: Nakanishi, Yoshinobu · Inventors: Nishizono, Tomohiro; Yamamura, Yoshihiro; Nakanishi, Yoshinobu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Scrambled Communication System Using Adaptive Transversal Filters For Descrambling Received Signals", ABSTRACT OF THE DISCLOSURE In a scrambled communication system, a transmitting station generates a scrambling noise having a periodically recurrent series of noise patterns and scrambles an information signal by simply summing the scrambling noise to the information signal so that the information signal is totally unintelligible by an interceptor. At a receiving station a noise, cancelling signal is generated by an adaptive transversal filter and supplied to a subtractor where it is combined with the scrambled signal to recover the information signal. For generating the noise cancelling …
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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 August 23, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 23, 2011.
- 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.