High-speed packet switching using a space-division optical switch
CA 1317360 C · Owner: Hitachi, Ltd. · Inventors: Amada, Eiichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The packet switching apparatus comprises input buffers for respective input ports; a space division optical switch for transferring packets from the input buffers to a desired output port; and a controller for controlling the switching on the basis of the header information of the packets. The controller analyzes the header of the packets from each input port to determine outputtable packets so that these outputtable packets are outputted all at once after the connection of the switch has been controlled. By repeating this process, the packets are continuously switched.
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 May 4, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 4, 2010.
- 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.