Communication network system
CA 1237803 A · Owner: Hitachi, Ltd. · Inventors: Ihara, Hirokazu; Mori, Kinji; Miyamoto, Shoji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract:, Transmission line groups consisting of a plurality of loop-like transmission routes are mutually connected via transmission controllers and are arranged in a two-dimensional or three-dimensional array. Processing units are connected as a homogeneous network in a matrix or mesh form by means of the loop-like transmission routes. The transmission controllers at the nodes of the network have a communication management function such that they send the data without grasping the situation on the transmission routes. Independently they check for trouble between adjacent transmission controllers and specify the position of trouble.
Read the whole patent
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 June 7, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 7, 2005.
- 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.