Error detection for fiber distributed interfaced optic link
CA 2066611 C · Owner: Chandran, Srikumar R. · Inventors: Mau, Franco E.; Chandran, Srikumar R.; Jan, Steven A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Error detection of digital data transmitted on an optic link (18a-18b) is accomplished by creating, before transmission a check, code comprising check bits that correspond to spaced one of the data bits forming the plurality of bits. The check code is then transmitted with the plurality of bits (Fig. 1) to a receiver (32) where the plurality of bits are used to create an error code in the same manner as the check code, the error and check codes compare, and an indication of error (64) generated when a miscompare is detected.
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
- Filed September 12, 1990 and granted April 12, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 12, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 12, 2012.
- 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.