Multi-master station, multi-channel digital communication system with channel selection provided at each terminal
CA 1160711 A · Owner: Minnesota Mining And Manufacturing Company · Inventors: Hackett, Brian K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A Multi-Master Station, Multi-Channel, Digital Communication System with Channel Selection Provided at Each Terminal, A digital communications system includes a plurality of master stations communicating with a plurality of terminals over a single communication line via a plurality of duplex communication channels, a separate channel for each master station. A frequency translator is provided at each terminal permitting the terminal to selectively communicate over any of the channels. When a particular channel is selected, the terminal's transmitter is temporarily disabled to allow its receiver to be resynchronized by a signal sent out by the master station whose channel has been selected. …
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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 January 17, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 17, 2001.
- 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.