Data communication system
CA 1070848 A · Owner: Bethlehem Steel Corporation · Inventors: Hazelton, Dean W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Digital data in the form of serial station bit, frames which exclude protocol information are communicated, bidirectionally over a plurality of serial transmission channels to peripheral devices in a di?ital process control system. Data enters and leaves a process control computer input-output section serially in response to softwaregenerated control signals. Serial-to-parallel station interfaces having simplified disign are located along each channel. Each interface has a multifunctional shift register responding to the control signals to provide not only bidirectional data flow through station but simultaneous, parallel loading of each peripheral device. One software control logic …
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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 29, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 29, 1997.
- 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.