Signal error detection in railroad communication system
CA 2463809 A1 · Owner: Teeter, David Carroll · Inventors: Foy, Robert James; Teeter, David Carroll; Jones, Adrian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A communication system (10) for a distributed locomotive power communications system for a railroad train having a lead locomotive (14) and one or more remote locomotives (12, 13). Messages are communicated over the system between the lead (14) and remote (12, 13) locomotives. Each communicated message includes information bits (41) and an error detection bits (42 43, 44) for , detecting errors in the information bits (41). The error detection bits (42 43, 44) further comprise cyclic redundancy code words and parity bits formed according to the horizontal (43) or vertical (44) parity of the information bits (41) and the cyclic redundancy code words (42).
Read the whole patent
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 October 17, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 17, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 17, 2024.
- 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.