A code division multiplex satellite broadcasting system
CA 2289898 A1 · Owner: Lucent Technologies Inc. · Inventors: Weerackody, Vijitha; Sayeed, Zulfiquar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A CDM satellite transmission system that broadcasts programming content, such as audio or video information using two geo-synchronous , satellites and a plurality of terrestrial repeaters based on Code Division Multiple Access (CDMA), technology is disclosed. A plurality of programming channels is multiplexed onto a, carrier frequency using Code Division Multiple Access (CDMA) technology. A delayed, version of the signal is transmitted with the on-time version of the programming content, to accommodate uninterrupted reception in the event of a blockage. The on-time and, delayed version of each information channel is transmitted by each of the satellites and, repeaters, providing …
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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 November 18, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 18, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 18, 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.