Alternate self-routing packet switching node having fault detection capabilities
CA 1234206 A · Owner: American Telephone And Telegraph Company · Inventors: Lea, Chin-Tau A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, A self-routing switching network interconnecting a plurality of interface controllers for communicating packets and circuit switched information via multiple paths with provision for diagnostic testing by allowing only single paths between any given set of input and output ports. The network comprises stages of switching nodes that are grouped in pairs. The stages are interconnected by links and each pair of switching nodes shares the same set of input links from the preceding stage. In normal operation, a pair of nodes determines one of a multiple of paths through the switching network by one of the pair responding to address information communicated via a link from an interface …
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 March 15, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 15, 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.