Asynchronous and non-data decision directed equalizer adjustment
CA 1250910 A · Owner: American Telephone And Telegraph Company · Inventors: Karabinis, Peter D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract Equalizers, 112,113,114,115, and/or, 121,122,123,126 which provide distortion compensation for a modulated carrier signal 101 comprising data signals and having a time-varying signal envelope are, adjusted at selected times in response to the equalized carrier signal envelope and the recovered data signals. Each selected time corresponds to a time when the equalized carrier signal envelope has a preselected value. Advantageously, the disclosed equalizer adjustment is unaffected by loss of receiver synchronization to the modulated carrier signal and is applicable to a variety of communications systems and modulation formats.
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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 March 7, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 7, 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.