Sound transmission method for data way system
CA 1259419 A · Owner: Kawamura Electric Industry Co. Ltd. · Inventors: Yokoyama, Makoto
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Sound Transmission Method for Data Way System ABSTRACT OF THE DISCLOSURE, A sound transmission method is carried out in a data way system comprising at least one controller more than two data, input modules and more than two data output modules all of which are connected to one another by a series of data transmission lines making a single loop while linking them together. The data input modules and output modules each are given an address. One or some of the data input modules are constructed as a sound input module or modules while one or, some of the data output modules are constructed as a sound output module or modules. The controller specifies the addresses of the sound input and …
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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 September 12, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 12, 2006.
- 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
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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.