Two-way paging system having random reverse channel slot scheduling
CA 2350580 A1 · Owner: Ho, Derek · Inventors: Buternowsky, Barry; Ho, Derek
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a two-way paging system including a paging terminal (105) a plurality of , paging transmitters (103) a plurality of paging receivers (109), and a plurality of two-way paging units (111) the plurality of two-way paging units (111) transmitting reverse channel messages to the paging receivers (109) in a time division multiplexed protocol, the protocol including a frame with a plurality of reverse channel time slots (201) a method of assigning reverse , channel time slots to the paging units is disclosed. The method comprises: (a) determining a set of transmitting paging units from the plurality of two-way paging units that are to transmit a reverse channel message and (b) randomly , …
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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 12, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 12, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 12, 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.