System and method for detecting ingress in a signal transmission system
CA 2588533 C · Owner: Scientific-Atlanta, Inc. · Inventors: Wall, William E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system and method for detecting ingress on shared media is presented. In one embodiment, among others, an input signal is selectively attenuated at each source site using a pseudo-random pattern thereby amplitude modulating at low , level the signal in a pseudo-random manner. Each encoded signal from each of the source sites is combined on shared media connected to a headend. The headend receives a composite signal comprising all of the individual source site signals and extracts the source site information using the pseudo-random pattern, thereby determining which of the source sites is the source of ingress.
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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
- Filed June 22, 2005 and granted March 20, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 22, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
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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.