Packet synchronization utilizing a multi-length packet format including check sequence (s)
CA 2015405 C · Owner: May, Carl J. Jr. · Inventors: May, Carl J. Jr.; Peticolas, Jon L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, Packet synchronization is obtained by employing a unique packet transport word including at least one prescribed parity check pattern in conjunction with a packet length indicator. An at least one prescribed parity check is computed over transport word length blocks of bits of an incoming packet and compared to an expected parity check pattern in predetermined bit positions in the incoming block of bits to identify possible transport word dandidates. Once a transport word candidate is identified, the packet length indicator is used to point to the next transport word candidate. Synchronization is declared upon obtaining a parity match for a subsequent transport word candidate …
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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 April 25, 1990 and granted October 12, 1993. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 25, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 25, 2012.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.