Multipoint link data-transmission control system
CA 1281432 C · Owner: Kabushiki Kaisha Toshiba · Inventors: Yamashita, Hiroaki; Nishida, Toshio; Shirakawa, Masakazu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
According to a multipoint link data-transmission control system, a master transmission device delivers message data via a bidirectional transmission path to a plurality of slave transmission devices the data, containing a control field for designating control data for setting or resetting a flag. The transmitting of data from the slave transmission device to the master transmission device is allowed when the flag is set and is inhibited when the flag is reset. Where the transmitting of data from a faulty slave transmission device is to be inhibited, the master transmission device transmits the data to the faulty slave transmission device, by designating flag reset data to the control field …
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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 March 12, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 12, 2008.
- 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.