Intelligent software controlled correction of frequency tracking for a local oscillator of a receiver of a wireless device
CA 2335212 A1 · Owner: Lucent Technologies, Inc. · Inventors: Banik, Somnath; Stevenson, Carl R.; Mcdowell, Richard Lawrence
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus to perform a real-time drift correction of a local oscillator in a wireless device such as a cordless telephone and/or , to, perform software-based frequency tracking of the local oscillator. With respect, to the real-time drift correction the remote handset periodically wakes from a, sleep mode and goes into a normal link verification mode. Once in the link verification mode, the remote handset enters a time division duplexing (TDD) mode and attempts to establish a link with a base unit based on the timing of the TDD data frame. After the remote handset establishes a link with the base unit, the remote handset requests a security word from the base unit. Upon …
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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 February 9, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 9, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 9, 2023.
- 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.