Multiple access data communication system control
CA 1193691 A · Owner: Western Electric Company, Incorporated · Inventors: Maxemchuk, Nicholas F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, A variation on a carrier sense multiple access/collision detection (CSMA/CD) system protocol for local area, packet, random access, broadcast networks is disclosed for effectively servicing both voice and data traffic. When the instant method is used a mix of, periodic voice traffic and aperiodic data traffic can be transmitted on a channel without the voice packets colliding. Also, an upper bound on the delay experienced by the periodic traffic can be established. In the instant method, aperiodic sources contend for a channel as in conventional CSMA/CD networks. However unlike, conventional protocols, periodic sources transmit a preempt field, responsive to which aperiodic …
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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 September 17, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 17, 2002.
- 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.