Method and system for scrambling information signals
CA 1252560 A · Owner: Telease, Inc. · Inventors: Meriwether, Frank T.; Block, Robert S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and system for scrambled transmission of an information signal having a regular, repeating information rate from which a receiver of the information signal derives synchronizing information as in a television video signal. The information signal is summed with a scrambling signal having a frequency which is a function of the information rate plus an error quantity within a predetermined bandwidth namely that of the, synchronizing circuitry in the normal information receiver. The sum of the information signal and the scrambling signal is transmitted as the scrambled information signal. In a television scrambling system, the information signal is a television video signal and 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 April 11, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 11, 2006.
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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.