Apparatus for generating and sending a serial data packet for controlling a network of single point i/o devices
CA 2125705 C · Owner: Square D. Company · Inventors: Buda, Paul Robert; Peele, Kelvin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A communication system between a microprocessor based device (10) and a network of a plurality of remote input/output repeater modules (l2a-12d) that control various input and output devices (22a-22d) and (21a-24d) uses a synchronous serial communications protocol. he microprocessor based device (10) contains a transmitter module for generating a data packet that is sent to the remote input/output repeater modules (12a-12d). The transmitter module controls the clock rate of the network and encodes the data packet with an output data byte for each of the repeater modules (12a-12d). The output byte determines the state of the output devices (24a-24d) that may be connected to the remote …
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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 December 17, 1992 and granted October 13, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 17, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 17, 2014.
- 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
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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.