Method of detecting the channel identity of a number of channels in a mobile radio system
CA 2076296 C · Owner: Ugland, Jon Kristen · Inventors: Farjh, Jan Fredrik; Ugland, Jon Kristen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of detecting the identity of a radio channel and to ascertain whether the channel is a control channel or a traffic channel, in conjunction with convolution decoding in a mobile radio receiver. Channel identification is effected without such complete decoding. Part of a data block is decoded in accordance with the Viterbi algorithm as though the block represented a control channel. If the metric obtained after a given number of nodes is smaller than a given number of threshold values the, channel is considered to be a control channel and is thereafter decoded as such a channel. If the metric is greater than the threshold value, the channel is decoded as a speech channel.
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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 August 18, 1992 and granted March 20, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 18, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 18, 2014.
- 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
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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.