A coding technique in discrete multi-tone (dmt) based communications systems
CA 2271508 C · Owner: Wang, Jin-Der · Inventors: Laroia, Rajiv; Wang, Jin-Der
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In an Asymmetric Digital Subscriber Loop (ADSL) Discrete Multi-Tone (DMT) system, ADSL DMT equipment includes an encoder that operates on a DMT input signal, representing f symbols/sec. to generate for transmission, a DMT output signal, representing Nf symbols/sec. where N > l and where each symbol from the DMT , input signal is generated in a redundant form in the DMT output signal. In one example of a, redundant form, each symbol from the DMT input signal is repeated in N consecutive, symbol intervals in the DMT output signal. In another example of a redundant form, every N DMT input symbol values are transmitted in 2N consecutive symbol intervals in, the DMT output signal. These 2N …
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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 May 11, 1999 and granted December 10, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 11, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 11, 2021.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.