Method for data transmission and a system for carrying out the method
CA 1089049 A · Owner: N.V. Philips Gloeilampenfabrieken · Inventors: Westman, Kjell H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method and system for data, transmission between a central station and a number of terminal stations arranged on a closed loop. The transmission is carried out in series bit-by-bit in the one and same direction through the loop and in control of the central station. All data is transferred in the shape of data messages of a standard length, (e.g. 12 bits) each message comprising an address portion indicating the address of the terminal station to/ from which the message is directed, and a data portion comprising an information or control character. The messages are transferred as data blocks consisting of an output data phase during which at least one message is transmitted by central …
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 November 4, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 4, 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.