Transmission circuit for transmitting fixed-length data
CA 2079654 C · Owner: Tajima, Kazuyuki · Inventors: Tajima, Kazuyuki; Kawai, Masaaki; Naito, Hidetoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A transmission circuit transmits a normal cell data and an idle cell data via a communication line. The idle cell data is transmitted to fill time slots in the communication line at which there is no normal cell data to be transmitted each of the normal cell data and idle cell data including first data, second data and third data. The first second and, third data of the normal cell data respectively indicating a destination, an error correcting code of the first data and desired information. The first and second data of the idle cell data have predetermined bit patterns and the third data of the idle cell data may have any arbitrary bit pattern. The transmission circuit includes a first …
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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
- Filed October 1, 1992 and granted April 7, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 1, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 1, 2014.
- 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.