Timing recovery system
CA 2264470 C · Owner: Aman, Ahmad K. · Inventors: Farrow, Cecil William; Webb, Charles Albert Iii; Primatic, Agesino Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A digital timing recovery system advantageously employs both demodulated Iphase , and Q-phase components to more accurately locate the synchronization signal of an incoming VSB signal. The Q-phase component is advantageously employed to detect, the phase error. The use of the Q-phase component provides a more accurate measure, of the phase error and results in a larger (wider) acquisition range for timing frequency, offset. More specifically the timing recovery system of this invention performs symbol, clock recovery based on the VSB signal segment synchronization (sync) signal and, generates a pulse density modulated (PDM) phase difference signal that controls a, voltage controlled …
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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 March 5, 1999 and granted March 26, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 5, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 5, 2021.
- 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
Timeline From CIPO dates
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.