Packet data communication system with ring type transmission line
CA 1269438 C · Owner: Tazaki, Kenshi · Inventors: Higuchi, Masahiro; Fukuda, Haruki; Matsuda, Masahiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Packet data communication system includes a ring type transmission line for circulating a predetermined number of slots on which packets to be transmitted are loaded. Interface nodes are provided between the ring type transmission line for loading packets on slots and receiving packets from slots for terminals. In the interface node there are a predetermined number of subtransmission lines, for passing each of the slots in parallel through the interface node. Terminal interfaces respectively having sending buffers for storing packets and receiving buffers for storing packets are provided as well as a switch for connecting each of the sending buffers and receiving buffers to any one of the …
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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
- Granted May 22, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 22, 2007.
- 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.